TWI641668B - Antibacterial product and method of manufacturing the same - Google Patents

Abstract

An antibacterial product comprising at least one antimicrobial component is disclosed, wherein the antimicrobial component comprises a surface layer comprising silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere. The antibacterial product prevents bacterial proliferation caused by its use, kills bacteria, disinfects and purifies contaminated water, and exhibits an antibacterial effect on harmful bacteria within up to 6 hours, preferably, in 3 hours, especially 2 Early antibacterial effects are achieved within hours.

Description

Antibacterial product and its manufacturing method

FIELD OF THE INVENTION The present invention relates to an antimicrobial product and a method of making the same.

BACKGROUND OF THE INVENTION Containers for typical foods, such as portable containers for water and beverages, such as vacuum bottles and water bottles, have the disadvantage of being used by the user when they drink water from a water bottle or Various bacteria or oral bacteria (such as Streptococcus mutans) caused by contamination of the part of the user's saliva contact or attached to the finger are mixed with water in the water bottle or attached to the water bottle, thereby allowing various bacteria to proliferate in the water bottle. In addition, it has been pointed out that there is a risk that harmful food poisoning bacteria (such as Escherichia coli or S. mutans) adhere to the water bottle or allow spoilage bacteria to proliferate in the water bottle. There are currently no water bottles with effective functions to prevent bacterial proliferation or to eliminate and eliminate bacteria.

The main reason is believed to be: Since conventional insulated vacuum water bottles mainly contain high-temperature hot water, and the main function of the vacuum water bottle is to minimize the decrease in temperature with time, people mistakenly believe that it is difficult for various bacteria to contain heat in the water bottle. The water survives, thus maintaining the sanitation of the water in the water bottle.

However, when the temperature of the water is lowered to a temperature at which water can be consumed by humans, in particular, a temperature lower than body temperature, the bacteria actively proliferate. Recently, beverages including sports drinks are more often kept at room temperature or cold temperatures instead of hot temperatures depending on the season, and therefore, contamination of the liquid in the container by bacteria has attracted attention, and diarrhea such as diarrhea has occurred. Symptoms.

In particular, children often drink beverages from the same bottle, so the problem of water quality being contaminated by, for example, Streptococcus mutans in the bottle is increasing. Therefore, it is increasingly desired to develop water bottles having water purification and water quality retention functions.

On the one hand, containers for storing meat or fish are useful, and most are large in size and large in number. In particular, in many cases, a considerable amount of meat or fish is stored in the water. Further, it is difficult to discriminate or prevent a situation in which the food is allowed to stand in a state of being contaminated by food poisoning bacteria. Similar to the bottle's water-related issues, this issue is considered important in food hygiene.

On the other hand, when plastic sheets are used as kitchen cutting boards (food preparation tools used in kitchens of every home, usually used to cut food for cooking), there is a problem in maintaining hygiene because of its The surface can be attached to E. With the goal of solving this problem, an antibacterial kitchen chopping board realized by adding an antibacterial agent to a plastic material is currently commercially available, but it is difficult to achieve desired antibacterial properties only by simply adding an antibacterial agent.

Even when such an antibacterial agent is added, the particles are physically dispersed in the plastic after the molding process, and most of the particles are not exposed to the plastic surface. This is believed to be due to a physical phenomenon in which, when in contact with the surface of the mold, the molten plastic having low resistance occupies the mold contact surface as it moves. Therefore, the non-plastic particles are confined inside the molten plastic, making it substantially impossible to expose the heterogeneous molecules contained in the plastic to the plastic surface under the same quality conditions between the plastic and the antibacterial agent. Antibacterial tests of the examples of the invention were confirmed.

Typical antimicrobial testing requires antibacterial action within a 24 hour or 48 hour reference time. However, in practice, it is believed that the user desires an antibacterial effect: harmful bacteria in food containers including water bottles and vacuum bottles are destroyed in up to 6 hours, preferably 3 hours, and more preferably within 2 hours.

Harmful bacteria begin to proliferate when they accidentally mix with beverages in water bottles or vacuum bottles, but need to prevent the proliferation of harmful bacteria at the same time, ie, they need to be eliminated. In addition, considering the time from the filling of the container to the start of drinking or the completion of drinking, the 24-hour reference time is long from the point of common sense, and it is expected that the water in the water bottle has been consumed within 24 hours.

Therefore, from a common sense point of view, it is necessary to confirm the antibacterial ability in an antibacterial test in which such an antibacterial ability is achieved in a short time: sufficient for up to 6 hours, preferably 3 hours, more preferably 2 hours or less after filling the container with water , completely eliminate harmful bacteria, or ensure the viable cell count below 100 cells / ml. It has long been known to activate the antibacterial function of silver by activating the dissolved oxygen in water in contact with the silver surface by the micro-action of silver. The history of using silver having this main characteristic in a dish or for storing a beverage is long-lasting, and the antibacterial and bactericidal functions of silver are considered to be obtained by active oxidation rather than so-called chemical action. Undoubtedly, silver is completely harmless to the human body and does not affect bacteria beneficial to humans, for example, Lactobacillus, but due to its active oxidation on the surface, it has strong antibacterial activity against food poisoning bacteria and anaerobic bacteria, which are harmful to human body. And bactericidal effect, and it is known that the micro-action of silver has a safe antibacterial and bactericidal effect.

Meanwhile, Korean registered utility model No. 20-0377167 discloses a fading-resistant antibacterial silver container. However, the above-mentioned Korean registered utility model only describes that an antibacterial effect is obtained after 24 hours by using a nano-sized pure silver powder as a component having an antibacterial function.

In the present invention, various tests have been conducted to achieve sterilizing ability in a short time. The use of sterling silver results in poor sterilizing ability in a short period of time. However, it has been confirmed that 100% sterilization is achieved in a product of silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere for up to 6 hours, preferably 3 hours, more preferably 2 hours.

[Reference list] Korean registered utility model No. 20-0377167

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the problems occurring in the related art, and the present invention is intended to provide an antibacterial product which can prevent bacterial proliferation caused by its use and destroy bacteria in a short time.

Further, the present invention intends to provide an antibacterial product which can sterilize and purify water contaminated with bacteria.

Further, the present invention intends to provide an antibacterial product which exhibits an antibacterial effect in up to 6 hours, and preferably exhibits an early antibacterial effect within 3 hours, particularly 2 hours.

The present invention provides an antimicrobial product comprising at least one antimicrobial component, wherein the antimicrobial component comprises a surface layer comprising sintered silver, and the sintered silver may comprise silver sintered under a nitrogen atmosphere or sintered under an oxygen atmosphere Silver oxide.

In the present invention, conceptually, the silver sintered under a nitrogen atmosphere may include a silver coating sintered under a nitrogen atmosphere.

In the present invention, conceptually, silver oxide may include a silver coating that is sintered in air or under an oxygen atmosphere.

In the present invention, conceptually, pure silver may include a pure silver coating that is sintered in a vacuum.

In the present invention, sintering under an oxygen atmosphere means that 15.0% or more of the total volume of the gas is oxygen. Since air contains more than 20.0% of oxygen, sintering in air means sintering under an oxygen atmosphere according to the present invention.

Further, the above antibacterial product further includes silver oxide sintered under an oxygen atmosphere.

In an embodiment of the invention, the antimicrobial product may be selected from the group consisting of a catering appliance, a cooking appliance, a food container, a food preservation appliance, a medical device, a device for plants, a device for an animal, and a cleaning tool.

In an embodiment of the invention, the material or antimicrobial component for the antimicrobial product may comprise any material selected from the group consisting of metal, glass, ceramic, stone, mineral, plastic, and combinations thereof.

In an embodiment of the present invention, the antimicrobial member may have a shape selected from the group consisting of a flat shape, a spherical shape, a rod shape, a block shape, a granular shape, a sanding shape, and a shape of an antibacterial product.

In the embodiment of the present invention, the surface layer containing silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere may be such a layer (hereinafter, referred to as "in the form of a layer, sintered under a nitrogen atmosphere" Silver or a surface layer of silver oxide sintered under an oxygen atmosphere"): it contains silver sintered under a nitrogen atmosphere as a layer of a substrate or silver oxide sintered under an oxygen atmosphere, and it is located on the surface of the antimicrobial member; It may be a layer (hereinafter, referred to as "a surface layer of silver oxide sintered in a nitrogen atmosphere or sintered under an oxygen atmosphere in the form of particles"): it contains a plastic material as a substrate, which is in the form of particles. Silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere exposed to the surface of the substrate, or silver containing not only particles in the form of particles, exposed to the surface of the substrate, sintered under a nitrogen atmosphere or sintered under an oxygen atmosphere Silver, which also contains silver sintered in a nitrogen atmosphere in a form of particles dispersed in a substrate or silver oxide sintered under an oxygen atmosphere, And it is located on the surface of the antibacterial component.

In an embodiment of the present invention, a part or the whole of the antimicrobial member located under the surface layer of silver oxide sintered under a nitrogen atmosphere or sintered under an oxygen atmosphere in the form of a layer may be a rough surface or contain a granular form. A part or the whole of the surface layer of silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere may be a rough surface.

In an embodiment of the invention, the rough surface may be formed by sand blasting.

In an embodiment of the present invention, the surface layer containing silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere may have a thickness of 0.1 to 20 μm or sintered in a nitrogen atmosphere in the form of particles. The thickness of the surface layer of silver or silver oxide sintered under an oxygen atmosphere may be 10 to 60 μm.

In the embodiment of the present invention, the surface layer and the antibacterial member containing silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere may be integrally formed.

In an embodiment of the present invention, the antimicrobial layer and the surface layer containing silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere may contain 1 to 60 parts by weight of the particles based on 100 parts by weight of the plastic. Forms of silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere.

In an embodiment of the invention, silver sintered in a particulate form in a nitrogen atmosphere or silver oxide sintered in an oxygen atmosphere may contain mineral particles or rock-type particles in its core.

In an embodiment of the present invention, the weight ratio of the mineral particles or rock type particles to silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere may be 100:0.1 to 10.

Further, the present invention provides a method of producing an antimicrobial product comprising at least one antimicrobial component, the method comprising: (1) adding and dissolving a silver salt compound powder in water or a polar organic solvent to prepare a silver salt solution, and (2) Coating the silver salt solution on the antibacterial member, and (3) sintering the silver salt compound coated on the antibacterial member under a nitrogen atmosphere or an oxygen atmosphere, thereby forming silver containing the layer in the form of a layer sintered under a nitrogen atmosphere or in oxygen. A surface layer of sintered silver oxide under an atmosphere.

In an embodiment of the invention, the material for the antimicrobial component may be selected from the group consisting of metal, glass, ceramic, stone, mineral, and mixtures thereof.

In the embodiment of the invention, in the step (1), 1 to 10 parts by weight of the silver salt compound powder may be added to 100 parts by weight of water or a polar organic solvent.

In an embodiment of the present invention, the silver salt compound may be selected from the group consisting of silver carbonate, silver chlorate, silver chloride, silver chromate, silver vanadate, silver manganate, silver nitrate, silver nitrite, silver perchlorate, Silver phosphate, silver acetate, and mixtures thereof.

In an embodiment of the present invention, in the third step, sintering may be performed at a temperature of 440 ° C or higher.

In an embodiment of the invention, a rough surface may be formed on the antimicrobial component prior to the second step and a silver salt solution may be applied to the rough surface in a second step.

In an embodiment of the invention, the rough surface may be formed by sand blasting.

In an embodiment of the present invention, a surface layer containing silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere may be formed in a thickness of 0.1 to 20 μm.

In an embodiment of the invention, the method may further comprise, after step (3), manufacturing an antimicrobial product comprising the antimicrobial component.

Further, the present invention provides a method of producing an antimicrobial product comprising at least one antimicrobial component, the method comprising: (1) adding and mixing mineral particles or rock-type particles and a silver salt compound powder to water or a polar organic solvent, and under nitrogen The silver salt compound is sintered under an atmosphere or an oxygen atmosphere to prepare silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere in the form of particles having mineral particles or rock-type particles in its core; (2) mixing And heating the silver material sintered in a nitrogen atmosphere or silver oxide sintered in an oxygen atmosphere in the form of a plastic material and particles to prepare pellets; (3) molding the antibacterial member from the pellet; and (4) making the The antibacterial member is subjected to sand blasting so that silver sintered in a particulate form under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere is exposed on the surface of the antibacterial member.

In an embodiment of the present invention, in the step (1), the weight ratio of the mineral particles or the rock particles to the silver salt compound powder may be 100:0.1 to 10, and includes mineral particles or rock particles and silver salts. The weight ratio of the mixture of the compound powder to water or the polar organic solvent may be from 1 to 70:100.

In an embodiment of the present invention, the silver salt compound may be selected from the group consisting of silver carbonate, silver chlorate, silver chloride, silver chromate, silver vanadate, silver manganate, silver nitrate, silver nitrite, silver perchlorate, Silver phosphate, silver acetate, and mixtures thereof.

In the embodiment of the present invention, in the step (1), sintering may be performed at a temperature of 440 ° C or higher.

In an embodiment of the present invention, in the step (2), the weight ratio of the plastic material to the silver oxide sintered in a nitrogen atmosphere or the silver oxide sintered under an oxygen atmosphere may be 100:1 to 60.

Further, the present invention provides an antibacterial metal scrubber which is produced by the following processes: (1) adding and dissolving 1 to 10 parts by weight of a silver salt compound powder in 100 parts by weight of water or a polar organic solvent to prepare a silver salt solution, (2) impregnating a metal scrubber made of metal fibers in the silver salt solution to coat a silver salt solution on a part or all of the fiber surface of the metal scrubber, and (3) at a temperature of 440 ° C or higher The silver salt compound coated on part or all of the fiber surface of the metal scrubber is sintered under a nitrogen atmosphere or an oxygen atmosphere to form silver sintered under a nitrogen atmosphere on a part or all of the fiber surface of the metal scrubber Or a surface layer of silver oxide sintered under an oxygen atmosphere.

According to the present invention, the antibacterial product can prevent bacterial growth caused by its use, can kill bacteria, can disinfect and purify contaminated water, and can exhibit an antibacterial effect in up to 6 hours, preferably, Early antibacterial effects are achieved within 3 hours, more preferably within 2 hours.

Specifically, even when water is added to the antibacterial product of the present invention from a river, a lake or a swamp in an emergency, the antibacterial product according to the present invention can not only prevent bacterial contamination caused by its use, but also has a predetermined Time (typically, up to 6 hours, preferably 3 hours, and more preferably within 2 hours) to remove and kill harmful anaerobic bacteria (eg, harmful food poisoning bacteria) that have low resistance to active oxidation by silver, Includes the power of E. coli, Salmonella, Vibrio parahaemolyticus, and Staphylococcus aureus, or Streptococcus mutans.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail.

Antibacterial Product According to the present invention, the antimicrobial product comprises at least one antimicrobial component, wherein the antimicrobial component may comprise a surface layer comprising silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere.

The term "silver sintered under a nitrogen atmosphere" as used herein conceptually includes a silver coating that is sintered under a nitrogen atmosphere.

The term "silver oxide" as used herein conceptually includes a silver coating that is sintered under air or under an oxygen atmosphere.

The term "pure silver" as used herein conceptually includes a pure silver coating that is sintered in a vacuum.

In the present invention, sintering under an oxygen atmosphere means that 15.0% or more of the total volume of the gas is oxygen. Since air contains 20.0% or more of oxygen, sintering in air means sintering under an oxygen atmosphere according to the present invention.

The antibacterial product requires antibacterial properties, and examples thereof include catering utensils, cooking utensils, food containers, food preservatives, medical instruments, devices for plants, devices for animals, and cleaning tools. Further, the antibacterial product as a product in contact with water or a product containing water may include, but is not limited to, a wide range of products having hygienic conditions.

The catering appliance is used for a dining table, and examples thereof may include a plate, a cup, a fork, a spoon, a chopstick, a spoon and/or a chopstick holder, a pan holder, a tray, a spoon holder, and the like.

The cooking appliance is used for cooking, and examples thereof may include a mixing bowl, a ladle, a pliers, a spatula, a wicker tray, a basket, a shovel, a mold for rice balls and/or dumplings, a can opener, a cooking net, and a stirring. , juicer, funnel, pasta machine, pot, pot, kitchen chopping board, frying pan, knives (chopper, scissors, etc.), kettle, teapot, confectionery (formation rack, etc.), baking utensils (bread rack, etc.).

The food container is for containing food, and examples thereof may include single-layer or double-layer (vacuum) bottles, cups, glasses, jugs, cans, packaging containers, electric kettles, water bottles, food trays, food storage containers, and the like.

In addition to the food container described above, the food preservation device is used for fresh food in a home, a restaurant, a company, etc., and the specific shape thereof is not limited, and examples thereof may include a water storage tool (water tank, water purifier, etc.), a refrigerator, Kimchi refrigerator, freezer, etc.

The medical device is used in the medical field, the field of nursing, and the like, and examples thereof may include a tweezers, a scalpel, a scissors, a sterilization plate, a tray, an opener, a single-layer or double-layer disinfectant container (vacuum), a purifier, Ringer's liquid rack and so on.

The plant for plant is used to culture, store or transport plants, and examples thereof may include flower pots, plant cultivation devices, plant storage devices, plant transport devices, and the like.

The apparatus for animals is used for cultivating, storing or transporting animals, and examples thereof may include a fish bowl, a water tank, a water tank decorative article, a fish tank filter, a tank cleaning product, a water tank oxygenator, a water tank motor, a live fish transport container, Pet trays, pet water bottles or thermos, pet food feeders or water dispensers, feed storage containers, etc.

The cleaning tool is for removing dirt and bacteria from various products (including the above-described antibacterial product) using a cleaning solution such as water or detergent, and examples thereof may include a scrubber, a sponge, a brush, a cloth, and the like.

The antibacterial member is configured to include a component (antibacterial component) exhibiting antibacterial properties on or in the surface thereof and inside. For a food container, the antimicrobial component may be part or the entirety of each of its inner wall, bottom, lip contact, water contact, handle, etc., or may be the entire food container. For a catering appliance, a cooking appliance or a food preservation appliance, the antimicrobial component may be part or the whole of each of its food contact, water contact, handle, etc., or may be an entire catering appliance, cooking appliance or food preservation appliance. For a medical device, the antimicrobial component can be part or the entirety of each of its contact with the patient's body, the water contact, the handle, etc., or can be the entire medical device. For devices for plants, the antimicrobial component may be part or all of each of its inner wall, bottom, plant contact, water contact, handle, etc., or may be the entire device for the plant. For devices for animals, the antimicrobial component may be part or all of each of its inner wall, bottom, animal contact, water contact, handle, etc., or may be the entire device for the animal. For a cleaning tool, the antimicrobial component can be part or the entirety of its components in contact with water, dirt, bacteria, etc., or can be the entire cleaning tool.

The antimicrobial member may be provided in the form of a flat plate (a circular plate, a rectangular plate, or a cylindrical plate), a spherical shape, a rod shape, a block shape, a granular shape, a sand shape, or a shape of an antibacterial product.

In an embodiment of the present invention, the material for the antibacterial product or the antibacterial member may include any material selected from the group consisting of metal (rustproof metal), glass, ceramic (ceramicware), stone, mineral, plastic, and combinations thereof.

Examples of the plastic include: a thermoplastic resin which is formed by inserting a component in a hot melt state in a frame; or a thermosetting resin which is formed by mixing, heating and curing a component. Specific examples include, but are not limited to, polyester, polyethylene terephthalate, polyethylene, high density or low density polyethylene, polyvinyl chloride, polypropylene, polystyrene, impact resistant polystyrene, poly Indoleamine, acrylonitrile butadiene styrene, polycarbonate, polyurethane, maleimide, urea resin, bakelite resin, melamine resin, melamine formaldehyde, phenolic resin, polyepoxide, polyetherimide, Polyimine, polylactic acid, polymethyl methacrylate, furan, organic hydrazine, and polyfluorene, which may be used singly or in combination of two or more.

The surface layer containing silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere may be such a layer (hereinafter, referred to as "silver sintered under a nitrogen atmosphere in the form of a layer or sintered under an oxygen atmosphere" Surface layer of silver oxide "): It contains silver sintered under a nitrogen atmosphere as a layer of a substrate or silver oxide sintered under an oxygen atmosphere, and it is located on the surface of the antimicrobial member.

The surface layer containing silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere may be such a layer (hereinafter, referred to as "silver sintered under a nitrogen atmosphere in the form of particles or sintered under an oxygen atmosphere" a surface layer of silver oxide"): it comprises a plastic as a substrate, silver in a particle form, exposed to a surface of the substrate, sintered under a nitrogen atmosphere, or silver oxide sintered in an oxygen atmosphere, or not only in the form of particles Silver sintered under a nitrogen atmosphere on the surface of the substrate or silver oxide sintered under an oxygen atmosphere further contains silver sintered in a nitrogen atmosphere or dispersed in an oxygen atmosphere in the form of particles, and silver oxide sintered under an oxygen atmosphere, and It is located on the surface of the antimicrobial component. Exposing silver sintered in a particulate form under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere to a substrate surface means, for example, silver in the form of particles sintered under a nitrogen atmosphere when the antibacterial product is exemplified by a food container Silver oxide sintered under an oxygen atmosphere can be in direct contact with food or lips, including organs around the lips and organs associated with the hands.

In an embodiment of the present invention, part or all of the antimicrobial member located under the surface layer containing silver sintered under a nitrogen atmosphere or sintered under an oxygen atmosphere may be a rough surface. In the case where such a rough surface is provided, the adhesion strength of the surface layer of silver oxide sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere may be enhanced, and may be carried out under a nitrogen atmosphere by means of a layer containing layer. Sintered silver or a surface layer of silver oxide sintered under an oxygen atmosphere increases the antibacterial effect.

In an embodiment of the present invention, part or all of the surface layer containing silver sintered under a nitrogen atmosphere or sintered under an oxygen atmosphere in the form of particles may be a rough surface. In the case where such a rough surface is provided, the exposure amount of silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere is increased in the form of particles, thereby being silver sintered under a nitrogen atmosphere in the form of particles or The surface layer of silver oxide sintered under an oxygen atmosphere improves the antibacterial effect.

In an embodiment of the invention, the rough surface may be formed by sand blasting. Sand blasting is a spraying treatment which is carried out in such a manner that a glass ball, a crucible or a sea sand having a small diameter is sprayed on the surface of the material by air or falls on the surface of the material by gravity.

In the embodiment of the present invention, the thickness of the surface layer containing silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere in the form of a layer may be in the range of 0.1 to 20 μm. In the above thickness range, a strong antibacterial effect can be obtained.

In an embodiment of the present invention, the thickness of the surface layer containing silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere in the form of particles may be in the range of 10 to 60 μm. In the above thickness range, a strong antibacterial effect can be obtained.

In the surface layer of silver oxide sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere in the form of a layer according to an embodiment of the present invention, based on silver in a form of a layer sintered under a nitrogen atmosphere or under an oxygen atmosphere The total weight of the surface layer of the sintered silver oxide is such that the silver sintered under a nitrogen atmosphere or the silver oxide sintered under an oxygen atmosphere is contained in an amount of 50 to 100% by weight, preferably 70 to 100% by weight, more preferably 90 to 100% by weight. . The amount of silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere contained in a surface layer containing silver sintered under a nitrogen atmosphere or a silver oxide sintered under an oxygen atmosphere in the form of a layer falls on any of the above When the range is within, a strong early antibacterial effect can be obtained. When the amount of silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere contained in a surface layer containing silver sintered under a nitrogen atmosphere or a sintered silver oxide atmosphere in an oxygen atmosphere is less than 100% by weight It may contain a silver compound such as silver or silver oxide and other impurities, and may further include an additional antibacterial component in addition to the silver compound.

In the surface layer containing silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere in the form of particles according to an embodiment of the present invention, based on 100 parts by weight of the plastic, 1 to 60 parts by weight, preferably 1 to The amount of 40 parts by weight includes the silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere. The amount of silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere contained in a surface layer containing silver sintered under a nitrogen atmosphere or a silver oxide sintered under an oxygen atmosphere in the form of particles falls on any of the above When the range is within, a strong early antibacterial effect can be obtained. In a surface layer containing silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere, a silver compound such as silver or silver oxide and other impurities may be contained, and may further include, in addition to the silver compound, Additional antibacterial component.

In an embodiment of the invention, the particles are exposed to the surface of the substrate or dispersed in the form of particles in a substrate comprising a surface layer of silver sintered under a nitrogen atmosphere or a surface layer of silver oxide sintered under an oxygen atmosphere. The sintered silver under the atmosphere or the silver oxide sintered under an oxygen atmosphere may contain mineral particles or rock-type particles in its core.

The mineral particles are not harmful to humans, plants and/or animals, and may include, without limitation, elemental mineral particles, sulfide mineral particles, oxide mineral particles, halogen mineral particles, carbonate mineral particles, nitrate mineral particles, boric acid. Salt mineral particles, sulfate mineral particles, phosphate mineral particles, arsenate mineral particles, vanadate mineral particles, tungstate mineral particles, molybdate mineral particles, and silicate mineral particles. Specific examples thereof may include talc particles, zeolite particles, cerium oxide particles, bentonite particles, mica particles, dolomite particles, and the like. The talc particles may include talc powder used as a food additive, for example, talc powder E553b (EU Authorized Number).

The rock-type particles are harmless to humans, plants, and/or animals, and rock particles containing at least one of the above-described minerals (for example, elemental minerals, sulfide minerals, oxide minerals, etc.) may be used without limitation, and specific examples thereof may include Sand, etc.

In an embodiment of the invention, the weight ratio of mineral or rock-type particles to silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere falls within the range of 100:0.1 to 10, preferably 100:1 to 5. Inside.

In an embodiment of the invention, the mineral particles or rock-type particles may have a diameter of 10 to 20 μm. Thickness of silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere in silver form sintered in a nitrogen atmosphere or silver oxide sintered in an oxygen atmosphere according to an embodiment of the present invention (from particles The form of the silver sintered under a nitrogen atmosphere or the center-to-surface radius of the silver oxide sintered under an oxygen atmosphere minus the radius of the mineral particles or the rock-type particles may fall within the range of 0.1 to 20 μm. In the above range, a strong antibacterial effect can be obtained.

A surface layer containing silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere is attached to the antibacterial member in a solid phase. A surface layer containing silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere is separately prepared and then assembled with an antimicrobial member or attached to the antimicrobial member by physical or chemical bonding. As is apparent from the manufacturing method (which will be described later), a surface layer containing silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere may be formed together with the antibacterial member.

In an embodiment of the present invention, a surface layer containing silver sintered under a nitrogen atmosphere or sintered under an oxygen atmosphere in the form of particles may be integrally formed with the antibacterial member. Formed integrally means, for example, that the antimicrobial member and the surface layer of silver oxide sintered in a nitrogen atmosphere or sintered under an oxygen atmosphere in the form of particles are formed as a single component in a mold or a molded frame, or have The same or similar composition. In this case, they can be formed as a single component together with other components. The integrally formed component may include an additive such as a flame retardant, a heat stabilizer, a colorant, a pigment, a compatibilizer, a light stabilizer, an impact modifier, and the like in an amount of 0.1 to 5 wt%, based on the total weight of the component. Inorganic filler.

In an embodiment of the present invention, the integrally formed antibacterial member and the surface layer of silver oxide sintered in a nitrogen atmosphere or sintered under an oxygen atmosphere in the form of particles may be 1 to 60 based on 100 parts by weight of the plastic. The amount by weight, preferably 1 to 40 parts by weight, of silver in the form of particles sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere is contained. When the amount of silver sintered in a nitrogen atmosphere or the amount of silver oxide sintered under an oxygen atmosphere falls within any of the above ranges, a strong early antibacterial effect can be ensured without impeding the moldability of the plastic material. .

The antimicrobial product (for example, a kitchen chopping board) can be constructed independently of only the antimicrobial component. One or more antimicrobial components may be combined or combined to form an antimicrobial product. The antibacterial member may be integrally formed with other members to constitute an antibacterial product, or may be combined or combined with other members to constitute an antibacterial product. In the case where the antibacterial member is bonded or the antibacterial member is combined with other members, the plurality of antibacterial members, the antibacterial member and the other members, or a plurality of other members may be physically combined by a combination of protrusions and depressions, welding or the like, or may pass Adhesives and the like are chemically bonded so as not to separate during use and/or shelving of the antimicrobial product.

In an embodiment of the invention, the antimicrobial product may be a food container. The antimicrobial component of the food container may be part or all of each of the inner wall and/or the lip contact of the food container. The food container according to an embodiment of the present invention may include a first surface layer containing silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere on a part or the whole of the inner wall thereof, and contact at the lip thereof Part or all of the portion contains silver sintered under a nitrogen atmosphere or a second surface layer of silver oxide sintered under an oxygen atmosphere.

1 is a cross-sectional view showing a food container (vacuum water bottle) according to an embodiment of the present invention. As shown in FIG. 1, the vacuum water bottle includes an outer bottle 10, an inner bottle 20, and a lip contact portion 30. The first surface layer containing silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere is formed on a part or the whole of the inner wall of the inner bottle 20, and contains silver sintered under a nitrogen atmosphere or under an oxygen atmosphere. The second surface layer of sintered silver oxide is formed on a portion or the entirety of the lip contact portion 30.

The food container may contain natural or processed foods, examples of which may include, but are not limited to, liquid foods such as water, beverages, yogurt, milk, juice, coffee, tea, alcoholic beverages, etc., semi-solid foods such as pudding, jelly, cream Etc. Solid foods such as candy, butter, cheese, seasonings, etc., as well as solid-liquid mixed foods such as noodles, soups, canned foods, meat, fish, etc.

In the technical feature of the present invention, oxygen in water contacted with silver sintered under a nitrogen atmosphere or a surface of silver oxide sintered under an oxygen atmosphere is activated, and thus anaerobic bacteria (such as Escherichia coli harmful to human body) are killed. Or toxic bacteria to maintain the antibacterial properties of the water in the food container (i.e., the water in the food container is imparted with antibacterial properties) and the characteristics are indicated by the following examples. The antibacterial target is not limited to water in a food container, but can also be applied to various food preservation containers to exhibit strong hygienic activity during storage of the food.

In an embodiment of the invention, the material for the food container may comprise any one selected from the group consisting of metal, glass, ceramic (ceramicware), stone, mineral, plastic, and combinations thereof.

In an embodiment of the invention, the food container may be selected from a single or double layer (vacuum) bottle, cup, glass, can, packaging container, food tray, and food storage container.

The inner wall of the food container may be a portion where the food container contacts the food when the food is placed in the food container at a maximum or predetermined amount, or may be mainly a side surface and a bottom of the food container when the food is consumed by the user. surface. Further, the inner wall of the food container may be a portion that does not come into contact with the body of the food or non-human animal.

The lip contact portion of the food container may be a portion of the food container that is in direct contact with the lips and other organs around the mouth (eg, teeth, gums, palate, tongue, and cheek mucosa) or indirectly through food, saliva, and the like. In addition, the lip contact may be in contact with not only the lip but also other organs around the mouth (such as the nose, the person, the cheeks and the chin) or the organs associated with the hand (such as the fingers, nails, back of the hand and palm). section.

The description includes the first and second surface layers of silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere, and the surface layer of silver oxide sintered under a nitrogen atmosphere or sintered under an oxygen atmosphere as described above. The record is the same.

The inner wall (inner bottle) and the lip contact can be combined to independently constitute the food container. In addition to the inner wall and lip contacts, the food container may also include an outer bottle (Fig. 1), a handle, a lid, an opening and closing device, a sensor and a display device.

For example, in the case of a cup, a part or the entire lip contact of the lip contact may be part of the inner wall or the entire inner wall, and a part or the entire inner wall of the inner wall may be part or the whole of the lip contact Lip contact. The inlet and outlet for the food product can be formed in the inner wall, the lip contact (Fig. 1) or any other portion.

The lip contact portion and the inner wall (inner bottle) may be integrally formed or may be provided as separate components. When the lip contact portion is provided as a separate member, the lip contact portion and the inner wall may be physically combined by a joint structure of a protrusion and a recess or welding or the like, or may be chemically bonded using a binder or the like, and correspondingly, in the food container The lip contact and the inner wall may not be separated during use and/or shelving.

Further, when the lip contact portion is provided as a separate member, as shown in FIG. 1, the lip contact portion may have a cylindrical shape, and may have a thread on its outer surface, and the inner wall (inner bottle) The threaded contact portion may have another thread corresponding to the aforementioned thread on the outer surface of the lip contact portion to facilitate its assembly or disassembly.

The bonding or assembly of the components of the inner wall and the lip contact or the bonding or assembly of the inner wall or lip contact and other components may be the same as the bonding or assembly of the inner wall and lip contact.

Method of Manufacturing Antibacterial Product According to an embodiment of the present invention, a method of producing an antibacterial product including at least one antibacterial member may include: (1) adding and dissolving a silver salt compound powder in water or a polar organic solvent to prepare a silver salt solution, ( 2) coating a silver salt solution on the antibacterial member, and (3) sintering the silver salt compound coated on the antibacterial member under a nitrogen atmosphere or an oxygen atmosphere, thereby forming silver in a form of a layer sintered under a nitrogen atmosphere on the antibacterial member Or a surface layer of silver oxide sintered under an oxygen atmosphere.

For example, a method of manufacturing a food container including a part or the whole of an inner wall as an antibacterial member and a part or the whole of a lip contact portion may include (1) adding and dissolving a silver salt compound powder in water or a polar organic solvent to prepare silver. a salt solution, (2) coating a silver salt solution on a part or the whole of the inner wall of the food container and on a part or the whole of the lip contact portion, and (3) sintering the inner wall and the lip under a nitrogen atmosphere or an oxygen atmosphere a silver salt compound coated on the contact portion, thereby forming a first surface layer of silver oxide sintered in a nitrogen atmosphere or a silver oxide sintered under an oxygen atmosphere in a part or the whole of the inner wall, and in the lip portion A portion of the contact portion or a whole of the second surface layer of silver oxide sintered in a nitrogen atmosphere or sintered under an oxygen atmosphere is formed in part or in the entirety of the contact portion.

In an embodiment of the present invention, the material for the antibacterial member may include any one selected from the group consisting of metal (rustproof metal), glass, ceramic (ceramicware), stone, mineral, and a combination thereof. The antimicrobial member may be provided in the form of a flat plate (a circular plate, a rectangular plate, or a cylindrical plate), a spherical shape, a rod shape, a block shape, a granular shape, a sand shape, or a shape of an antibacterial product.

Examples of the polar organic solvent include, but are not limited to, tetrahydrofuran, ethyl acetate, acetone, dimethylformamide, acetonitrile, dimethyl hydrazine, nitromethane, propylene carbonate, formic acid, butanol, isopropyl Alcohol, n-propanol, ethanol, methanol and acetic acid, which may be used singly or in combination.

In an embodiment of the present invention, 1 to 10 parts by weight of the silver salt compound powder may be added to 100 parts by weight of water or a polar organic solvent in the step (1). Thus, the manufactured food container can exhibit strong early antibacterial properties.

In an embodiment of the present invention, the silver salt compound may be selected from the group consisting of silver carbonate, silver chlorate, silver chloride, silver chromate, silver vanadate, silver manganate, silver nitrate, silver nitrite, silver perchlorate, Silver phosphate, silver acetate, and mixtures thereof.

In an embodiment of the present invention, the sintering temperature in the step (3) may be 440 ° C or higher, for example, 440 to 1000 ° C. The sintering temperature may depend on the kind of the silver salt compound and the material of the antimicrobial member.

In an embodiment of the invention, a rough surface may be formed on the antimicrobial component prior to step (2) and a silver salt solution may be applied to the roughened surface in step (2). Thereby, the adhesion strength of the surface layer of silver oxide sintered in a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere can be enhanced, and can be sintered by using silver sintered under a nitrogen atmosphere or under an oxygen atmosphere. The surface layer of silver oxide increases the antibacterial effect.

In an embodiment of the invention, the rough surface may be formed by sand blasting.

The nitrogen atmosphere means that the atmosphere in the system (for example, the furnace body) in which the sintering process is performed includes nitrogen gas in an amount of 90 to 100 vol%, and preferably 95 to 100 vol%.

In an embodiment of the present invention, a surface layer containing silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere may be formed in a thickness of 0.1 to 20 μm.

In an embodiment of the invention, wherein the manufacture (e.g., in combination or combination) of an antimicrobial product comprising at least one antimicrobial component may be performed prior to step (1), wherein the antimicrobial product may include other components. The combination or combination of the plurality of antimicrobial members, antimicrobial members and other members, or a plurality of other members may be as described above.

For example, when the antimicrobial product is a food container, the manufacture (eg, in combination or combination) of the food container comprising the inner wall and the lip contact can be performed prior to step (1), wherein the food container can include other portions For example, outer bottles, handles, covers, opening and closing devices, sensors, and display devices.

In an embodiment of the invention, the method may comprise (4) reducing the temperature of the food container to room temperature, for example 20 ° C, after step (3).

In the case where the production of the antibacterial product including at least one antibacterial member is performed before the step (1), it is possible to form an excessively large surface layer of silver oxide sintered in a nitrogen atmosphere or a silver oxide sintered under an oxygen atmosphere in the form of a layer, There are undesired negative effects on economic efficiency. In addition, the shape and size of the antibacterial product may vary, and it is difficult to uniformly perform the above coating and sintering process on all of the antibacterial products.

In order to solve the above problems, a typical shape of an antibacterial member suitable for any antibacterial product can be applied. In this case, the hygienic properties normally required in antibacterial products can be maintained. Specifically, the method may include (5) after the step (3) or (4), manufacturing (for example, combining or combining) an antibacterial product comprising an antibacterial component, wherein the antibacterial product exemplified by the food container may include other Components, for example, a bottom surface, an inner wall surface, a lip contact, an outer bottle, a handle, a cover, an opening and closing device, a sensor, and a display device.

Combinations or combinations of a plurality of antimicrobial members, combinations or combinations of a plurality of components other than the antimicrobial members, or combinations or combinations of the antimicrobial members and other components are as described above. The above method makes it possible to economically manufacture an antibacterial product, enables the antibacterial member to be easily positioned at a desired portion of an antibacterial product having an arbitrary shape, and effectively imparts disinfection, purification, and hygienic effects to the antibacterial product.

For example, the method for producing an antibacterial product may include adding and dissolving a silver salt compound powder to water or a polar organic solvent to prepare a silver salt solution, subjecting the surface of the antibacterial member to sandblasting to form a rough surface, and coating the silver salt on the rough surface a solution in which a silver salt compound coated on the rough surface is sintered under a nitrogen atmosphere or an oxygen atmosphere, thereby forming a surface of the silver oxide sintered under a nitrogen atmosphere or a silver oxide sintered under an oxygen atmosphere on the antibacterial member. a layer, and an antibacterial member and other antibacterial member or other member having a surface layer containing silver sintered under a nitrogen atmosphere or sintered under an oxygen atmosphere, in the form of a layer, for example, in the case of a food container, Bottom surface, inner wall surface, lip contact, outer bottle, handle, cover, opening and closing device, sensor, and display device.

In an embodiment of the invention, the method may include washing the antimicrobial product after the step (3), (4) or (5), or washing and drying the antimicrobial product.

According to an embodiment of the present invention, a method of producing an antimicrobial product comprising at least one antimicrobial component may include: (1) adding and dissolving 1 to 10 parts by weight of a silver salt compound powder in 100 parts by weight of water or a polar organic solvent to prepare a silver salt solution, (2) coating a silver salt solution on the antimicrobial member, and (3) sintering the silver salt compound coated on the antimicrobial member in a nitrogen atmosphere or an oxygen atmosphere (in air) to form an inclusion on the antimicrobial member A layer of silver sintered under a nitrogen atmosphere or a surface layer of silver oxide sintered under an oxygen atmosphere in the form of a layer.

In one embodiment of the invention, the antimicrobial product is an antimicrobial metal scrubber. The method for producing the antibacterial metal scrubber may include: (1) adding and dissolving 1 to 10 parts by weight of a silver salt compound powder in 100 parts by weight of water or a polar organic solvent to prepare a silver salt solution, and (2) The silver salt solution is impregnated with a metal scrubber made of metal fibers to coat a portion or all of the fiber surface of the metal scrubber, and (3) at a temperature of 440 ° C or higher in a nitrogen atmosphere or oxygen Sintering a silver salt compound coated on a part or all of the fiber surface of the metal scrubber under an atmosphere, thereby forming silver containing sintering under a nitrogen atmosphere or under an oxygen atmosphere on a part or all of the fiber surface of the metal scrubber A surface layer of sintered silver oxide.

One embodiment of the present invention provides an antimicrobial metal scrubber manufactured by the above method. The antibacterial metal scrubber can play a role in disinfecting water in a live fish transport container and a live fish culture tank, purifying water in a human bathtub, and purifying and disinfecting the water in the beverage container. effect. The antibacterial metal scrubber has a large surface area in contact with water, exhibits high water permeability and gas permeability, thereby rapidly killing harmful bacteria in water in a container to be washed, and maintaining heat resistance up to 440 ° C or higher. .

According to an embodiment of the present invention, a method of producing an antimicrobial product comprising at least one antimicrobial component may include (1) adding and mixing mineral particles or rock-type particles and a silver salt compound powder to water or a polar organic solvent, and under a nitrogen atmosphere or The silver salt compound is sintered under an oxygen atmosphere to prepare silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere in the form of particles having mineral particles or rock-type particles in its core; (2) mixed plastic material And granules in the form of particles sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere, and heating the mixture to prepare pellets; (3) molding the antibacterial member from the pellets; and (4) The antibacterial member is subjected to sand blasting so that silver sintered in a particulate form under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere is exposed on the surface of the antibacterial member.

For example, a method of manufacturing a food container including an inner wall and a lip contact portion may include (1) adding and mixing mineral particles or rock type particles and a silver salt compound powder to water or a polar organic solvent, and under a nitrogen atmosphere or an oxygen atmosphere. Sintering the silver salt compound to prepare silver sintered under a nitrogen atmosphere in the form of particles having mineral particles or rock-type particles in its core or silver oxide sintered under an oxygen atmosphere; (2) mixed plastic material and granular form Silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere, and heating the mixture to prepare pellets; (3) molding the inner wall, the lip contact portion, or the inner wall and the lip from the pellet And (4) subjecting a portion or the whole of the inner wall, a portion or the whole of the lip contact portion, or a part or the whole of the inner wall and a part or the whole of the lip contact portion to sandblasting, thereby making the granular form The silver sintered under a nitrogen atmosphere or the silver oxide sintered under an oxygen atmosphere is exposed on the surfaces of the inner wall, the lip contact portion, or both the inner wall and the lip contact portion.

Examples of the polar organic solvent include, but are not limited to, tetrahydrofuran, ethyl acetate, acetone, dimethylformamide, acetonitrile, dimethyl hydrazine, nitromethane, propylene carbonate, formic acid, butanol, isopropyl Alcohol, n-propanol, ethanol, methanol and acetic acid, which may be used singly or in combination.

The mineral particles are not harmful to humans, plants and/or animals, and may include, without limitation, elemental mineral particles, sulfide mineral particles, oxide mineral particles, halogen mineral particles, carbonate mineral particles, nitrate mineral particles, boric acid. Salt mineral particles, sulfate mineral particles, phosphate mineral particles, arsenate mineral particles, vanadate mineral particles, tungstate mineral particles, molybdate mineral particles, and citrate mineral particles. Specific examples thereof may include talc particles, zeolite particles, cerium oxide particles, bentonite particles, mica particles, dolomite particles, and the like. The talc particles may include talc powder used as a food additive, for example, talc powder E553b (EU Authorized Number).

The rock-type particles are harmless to humans, plants, and/or animals, and rock particles containing at least one of the above-described minerals (for example, elemental minerals, sulfide minerals, oxide minerals, etc.) may be used without limitation, and specific examples thereof may include Sand, etc.

In an embodiment of the invention, the mineral particles or rock-type particles may have a diameter of 10 to 20 μm. Thickness of silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere in silver form sintered in a nitrogen atmosphere or silver oxide sintered in an oxygen atmosphere according to an embodiment of the present invention (from particles The distance from the center-to-surface radius of the sintered silver to the radius of the mineral or rock-type particles may fall within the range of 0.1 to 20 μm. In the above range, a strong antibacterial effect can be obtained.

In an embodiment of the present invention, the silver salt compound may be selected from the group consisting of silver carbonate, silver chlorate, silver chloride, silver chromate, silver vanadate, silver manganate, silver nitrate, silver nitrite, silver perchlorate, Silver phosphate, silver acetate, and mixtures thereof.

In an embodiment of the invention, the weight ratio of the mineral or rock type particles to the silver salt compound powder in the step (1) falls within the range of from 100:0.1 to 10, preferably from 100:1 to 5. The weight ratio of the mixture containing the mineral particles or the rock type particles and the silver salt compound powder to water or the polar organic solvent may fall within the range of 1 to 70:100. In this case, the manufactured antimicrobial product can exhibit strong early antibacterial properties.

The nitrogen atmosphere means that the atmosphere in the system (for example, the furnace body) in which the sintering process is performed includes nitrogen gas in an amount of 90 to 100 vol%, and preferably 95 to 100 vol%.

In an embodiment of the present invention, the sintering temperature in the step (1) may be 440 ° C or higher, for example, 440 to 1000 ° C. The sintering temperature may depend on the type of silver salt compound and the type of mineral or rock type particles.

In the step (2), the weight ratio of the plastic material to the silver oxide sintered in a nitrogen atmosphere or the silver oxide sintered under an oxygen atmosphere in the form of particles falls within a range of from 100:1 to 60, preferably from 100:1 to 40. When the weight ratio of the plastic material to the silver oxide sintered in a nitrogen atmosphere or the silver oxide sintered under an oxygen atmosphere falls within any of the above ranges, a strong early antibacterial effect of the antibacterial product containing the antibacterial member can be ensured. At the same time, it does not hinder the moldability of the plastic material.

In the step (3), the antibacterial member may be molded in the form of a flat plate (a circular plate, a rectangular plate, or a cylindrical plate), a spherical shape, a rod shape, a block shape, a granular shape, a sand shape, or an antibacterial product. .

In an embodiment of the invention, step (3) may comprise molding an antimicrobial product comprising an antimicrobial component from the pellets. In this case, the antibacterial member and other members can be integrally formed.

In an embodiment of the invention, the method may comprise, after step (1), reducing the temperature of the silver sintered in a particulate form under a nitrogen atmosphere or the silver oxide sintered under an oxygen atmosphere to room temperature, for example 20 °C.

A layer may be provided by means of the step (4) comprising a plastic as a substrate, silver in the form of particles, exposed to the surface of the substrate, sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere, or both. a form of silver sintered under a nitrogen atmosphere exposed to a surface of a substrate or silver oxide sintered under an oxygen atmosphere, and silver sintered in a nitrogen atmosphere dispersed in a substrate in the form of particles or silver oxide sintered under an oxygen atmosphere And it is located on the surface of the antimicrobial member, that is, a surface layer of silver oxide sintered in a nitrogen atmosphere or a silver oxide sintered under an oxygen atmosphere in the form of particles.

In an embodiment of the invention, the method may comprise (5) manufacturing (eg, combining or combining) an antimicrobial product comprising an antimicrobial component after step (4), wherein the antimicrobial product may include other components. Combinations or combinations of a plurality of antimicrobial members, combinations or combinations of a plurality of components other than the antimicrobial members, or combinations or combinations of the antimicrobial members and other components are as described above.

For example, when the antibacterial product is a food container, the food container including the inner wall and the lip contact portion may be manufactured (for example, combined or combined) in the step (5) after the step (4), and the food product The container may contain other components such as an outer bottle, a handle, a lid, an opening and closing device, a sensor, and a display device. The combination or combination of the inner wall and the lip contact, the combination or combination of the components other than the inner wall and the lip contact, or the combination or combination of the inner wall or lip contact and other components are as described above.

In an embodiment of the invention, the method may include washing the food container after the step (5), or washing and drying the food container.

According to an embodiment of the present invention, a method of producing an antimicrobial product comprising at least one antimicrobial component may include (1) adding and mixing mineral particles or rock-type particles and a silver salt compound powder to water or a polar organic solvent, and under a nitrogen atmosphere or The silver salt compound is sintered under an oxygen atmosphere (in air) to prepare silver sintered in a nitrogen atmosphere under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere; (2) mixed plastic material and particles in a nitrogen atmosphere Lowering sintered silver or silver oxide sintered under an oxygen atmosphere, and heating the mixture to prepare pellets; (3) molding the antimicrobial member from the pellet; and (4) subjecting the antimicrobial member to sandblasting, thereby Silver sintered in a nitrogen atmosphere in the form of particles or silver oxide sintered under an oxygen atmosphere is exposed on the surface of the antimicrobial member.

The invention is better understood by the following examples, which are intended to be illustrative and not to limit the scope of the invention.

Comparative Example 1 A typical stainless steel bottle was produced which included a water contact portion whose inner wall was coated with pure silver by a vacuum sintering process and which was measured by the Japanese Food Research Laboratory for the antibacterial activity of the bottle produced against Escherichia coli. time. Sample: 200 mL of Escherichia coli-containing mineral water was placed in a pure silver sintered bottle having a pure silver coating obtained by vacuum sintering, and then the control was allowed to stand: 200 mL of Escherichia coli contained in a sterilization container prepared from a synthetic resin Pure water, then stand still

The count of E. coli over time was measured while keeping each sample at 20 °C. The results are shown in Table 1 below. [Table 1] A 0.1 mL test solution was sampled and then photographed at the initial, 3 hours, and 6 hours later, and the pictures are shown in Figures 2, 3, and 4.

As is apparent from Table 1 and FIG. 4, even after 6 hours in which the E. coli-containing mineral water was placed in the pure silver sintered bottle of Comparative Example 1, only a small amount of Escherichia coli was killed.

Example 1 As shown in Fig. 1, a cylindrical food container (height: 20 cm, diameter: 5 cm) was manufactured, which included an upper threaded inner wall (made of stainless steel) and an outer bottle (made of stainless steel). A vacuum portion between the inner wall and the outer bottle, and a lip contact portion (made of an aluminum alloy) having an external thread. To 100 parts by weight of water, 1.5 parts by weight of silver nitrate powder was added and dissolved to prepare an aqueous silver nitrate solution. The silver nitrate aqueous solution is applied to the inner wall and the lip contact portion of the food container. The coated portion was sintered in air at 440 ° C for 120 minutes to form a surface layer of the first sintered silver oxide on the inner wall, and a surface layer of the second sintered silver oxide was formed on the lip contact portion, after which the temperature was lowered. To 20 ° C, followed by washing with water and then drying at room temperature, a bottle comprising the inner wall and the lip contact portion on which the sintered silver oxide surface layer was formed was produced.

Antibacterial test of silver oxide bottle The following antibacterial test was carried out by the Japanese Food Research Laboratory upon request. The antibacterial ability of the manufactured silver oxide bottle against E. coli was tested.

Sample 1: 200 mL of mineral water containing Escherichia coli was placed in a silver oxide bottle, and then the sample 2 was allowed to stand: 200 mL of mineral water containing Escherichia coli was placed in a silver oxide bottle, and then a silver oxide bottle was covered with a lid. And the inverted control was placed: 200 mL of purified water containing Escherichia coli was placed in a sterilization container prepared from a synthetic resin, and then allowed to stand while keeping each sample at 20 ° C, and the count of E. coli over time was measured. The results are shown in Table 2 below. [Table 2] <10: A sample of 0.1 mL of the test solution was not detected, and then photographed at the initial time, after 3 hours, and after 6 hours, and the pictures are shown in Fig. 5, Fig. 6, and Fig. 7.

As is apparent from Table 2 and Figure 7, E. coli was completely killed after the E. coli-containing mineral water was placed in a silver oxide bottle for 6 hours.

Example 2 To 1000 mL of water, 0.5 kg of talc particles (E553b: EU authorization number) and 10 g of silver nitrate powder were added and mixed, and the mixture was dried, and then the dried powder was sintered at 440 ° C in an oxygen atmosphere (air) for 120 minutes to prepare. Sintered silver oxide in the form of particles having talc particles in its core. 100 parts by weight of a plastic material (polypropylene) and 40 parts by weight of sintered silver oxide in the form of particles were mixed and heated to prepare pellets. The pellets were used to mold a kitchen chopping board (width: 34 cm, length: 23 cm, height: 0.3 cm). The entire upper and lower surfaces of the kitchen panel are subjected to sand blasting to expose the sintered silver oxide in the form of particles to the upper and lower surfaces of the kitchen panel. The manufactured kitchen chopping board was used as the sample 2.

Antibacterial testing of kitchen chopping boards The following antibacterial tests were carried out by the Japanese Food Research Laboratory upon request. The antibacterial ability of the following samples against E. coli was tested.

Untreated 1: Immediately after spraying 200 mL of E. coli-containing mineral water on a polyethylene film Sample 1: Spray 200 mL of E. coli-containing mineral water on a kitchen chopping board manufactured by the same method as above except without sandblasting, and at 35 ° C Allow to stand for 24 hours. Sample 2: Spray 200 mL of E. coli-containing mineral water on the kitchen chopping board manufactured by the same method as above, and let stand at 35 ° C for 24 hours. Untreated 2: Spray 200 mL of Escherichia coli on polyethylene film. The mineral water was measured and allowed to stand at 35 ° C for 24 hours to measure the E. coli count in each sample. The results are shown in Table 3 below. [table 3] As is apparent from Table 3, Sample 2 (wherein the sintered silver oxide in the form of particles was exposed by blasting) showed a significant decrease in viable cell count compared to Sample 1 which was not blasted.

According to the antibacterial activity evaluation standard of the Japanese Food Research Laboratory, when the residual viable cell count difference is more than two digits, the antibacterial activity is evaluated as good, whereby an embodiment according to the present invention exhibiting a three-digit difference is obtained. The kitchen chopping board is considered to exhibit sufficient antibacterial properties.

Example 3 As shown in Fig. 1, a cylindrical food container (height: 20 cm, diameter: 5 cm) was produced, which included an upper threaded inner wall (made of stainless steel) and an outer bottle (made of stainless steel). A vacuum portion between the inner wall and the outer bottle, and a lip contact portion (made of an aluminum alloy) having an external thread. To 100 parts by weight of water, 1.5 parts by weight of silver nitrate powder was added and dissolved to prepare an aqueous silver nitrate solution. The silver nitrate aqueous solution is applied to the inner wall and the lip contact portion of the food container. The coated portion was sintered at 440 ° C under a nitrogen atmosphere (99 to 100 vol% of nitrogen) for 120 minutes to form a first surface layer containing silver sintered under a nitrogen atmosphere on the inner wall, and at the lip contact portion Forming a second surface layer containing silver sintered under a nitrogen atmosphere, and thereafter, lowering the temperature to 20 ° C, followed by washing with water, and then drying at room temperature, thereby producing a sintered body comprising a sintered body formed under a nitrogen atmosphere The silver surface layer of the inner wall and the lip contact the bottle.

Antibacterial test of silver bottle sintered under a nitrogen atmosphere The following antibacterial test was carried out by the Japanese Food Research Laboratory upon request. The antibacterial ability of the manufactured silver bottle sintered under a nitrogen atmosphere against Escherichia coli was tested.

Sample: 200 mL of mineral water containing Escherichia coli was placed in a silver bottle sintered under a nitrogen atmosphere, and then the control was allowed to stand: 200 mL of purified water containing Escherichia coli was placed in a sterilization container prepared from a synthetic resin, and then allowed to stand. The count of E. coli over time was measured while keeping each sample at 20 °C. The results are shown in Table 4 below. [Table 4] <10: For the sample and the control, 0.1 mL of the test solution was not detected, and then photographed at the initial time, 2 hours, 3 hours, and 4 hours, and the pictures are shown in FIGS. 8 to 14.

As is apparent from Table 4 and Fig. 9, E. coli was completely killed after the E. coli-containing mineral water was placed in a silver bottle sintered under a nitrogen atmosphere for 2 hours.

Example 4 A disk made of stainless steel (10 cm × 10 cm × 1 cm) was produced. To 100 parts by weight of water, 1.5 parts by weight of silver nitrate powder was added and dissolved to prepare an aqueous silver nitrate solution. An aqueous solution of silver nitrate was applied to the disk. The coated portion was sintered at 440 ° C under a nitrogen atmosphere (99 to 100 vol% of nitrogen) for 120 minutes to form a surface layer containing silver sintered under a nitrogen atmosphere on the disk, after which the temperature was lowered to 20 °C, followed by washing with water, and then drying at room temperature, thereby producing a disk comprising a surface layer on which silver sintered under a nitrogen atmosphere was formed.

Antibacterial test of silver disk sintered under a nitrogen atmosphere The following antibacterial test was carried out by the Japanese Food Research Laboratory upon request. The antibacterial ability of the manufactured silver disk sintered under a nitrogen atmosphere against Streptococcus mutans was tested.

Sample: 200 mL of mineral water containing Streptococcus mutans was sprayed on a silver plate sintered under a nitrogen atmosphere, and then left untreated: 200 mL of purified water containing Streptococcus mutans was sprayed on the polyethylene film, and then left to stand each sample. The count of S. mutans over time was measured while maintaining at 35 °C. The results are shown in Table 5 below. [table 5] <0.63: Not determined As is apparent from Table 5, Streptococcus mutans was completely killed 3 hours after the mineral water containing Streptococcus mutans was sprayed on a silver plate sintered under a nitrogen atmosphere.

As a result, based on the test data from the Japanese Food Research Laboratory, it was confirmed that among the bacteria harmful to the human body, the silver bottle sintered under a nitrogen atmosphere according to an embodiment of the present invention has strong removal of food poisoning bacteria (especially Escherichia coli). O-157 and O-111, Vibrio parahaemolyticus, Staphylococcus aureus, and Salmonella) or anaerobic bacteria (such as Streptococcus mutans). In order to compare the antibacterial property results of the silver coating, when the antibacterial activity of the comparative example, the silver oxide coating and the silver coating under a nitrogen atmosphere was compared in terms of the time required for the antibacterial activity, in the case of silver oxide 24 The hour was shortened to 6 hours, and the silver coating sintered under a nitrogen atmosphere achieved the desired performance within 2 hours, so the use of silver sintered under a nitrogen atmosphere showed excellent results. At the same time, since the antibacterial effect of silver on a vacuum sintered sterling silver sintered bottle is very slow, an early antibacterial effect cannot be expected.

While the preferred embodiment of the present invention has been disclosed for the purpose of illustration, it will be understood by those skilled in the art Additional and substituted.

10‧‧‧ outer bottle

20‧‧‧ inner bottle

30‧‧‧Lip contact

1 is a cross-sectional view showing a food container (vacuum water bottle) according to an embodiment of the present invention;

2, 3 and 4 are photographs showing test solutions of the antibacterial test of the pure silver sintered vacuum bottle of Comparative Example 1 after the start of the antibacterial test, after the antibacterial test for 3 hours, and after the antibacterial test for 6 hours, respectively;

5, 6 and 7 are photographs showing test solutions of the antibacterial test of the silver oxide bottle of Example 1 at the beginning of the antibacterial test, after the antibacterial test for 3 hours, and after the antibacterial test for 6 hours, respectively;

8 is a photograph showing a test solution at the start of an antibacterial test of a silver bottle sintered under a nitrogen atmosphere and a sterilization container made of a synthetic resin of Example 3.

9, 11 and 13 are photographs showing test solutions of 2 hours, 3 hours and 4 hours after the antibacterial test of the silver bottle sintered under a nitrogen atmosphere of Example 3, respectively;

Figures 10, 12 and 14 are photographs showing the test solutions at 2 hours, 3 hours and 4 hours after the antibacterial test of the synthetic resin prepared by the synthetic resin of Example 3, respectively.

Claims (26)

An antimicrobial product comprising at least one antimicrobial component, wherein the antimicrobial component comprises a surface layer comprising sintered silver, the sintered silver being sintered at a temperature of 440 ° C to 1000 ° C under a nitrogen atmosphere by sintering a silver salt compound The obtained silver, wherein the nitrogen atmosphere is an atmosphere in a system in which a sintering process is performed, contains nitrogen in an amount of 95 to 100 vol%; and the antibacterial product is a food container. The antibacterial product of claim 1, wherein the material for the antibacterial product is selected from the group consisting of metal, glass, ceramic, stone, mineral, plastic, and mixtures thereof. The antibacterial product according to claim 1, wherein the antibacterial member has a shape selected from the group consisting of a flat shape, a spherical shape, a rod shape, a block shape, a granular shape, a sand shape, and a shape of an antibacterial product. The antibacterial product according to claim 1, wherein the surface layer containing the sintered silver is: a surface layer comprising sintered silver in the form of a layer, the surface layer comprising sintered silver in the form of a layer as a substrate, and located On the surface of the antimicrobial component, or a surface layer comprising sintered silver in the form of particles, the surface layer comprising plastic as a substrate, comprising sintered silver in the form of particles, exposed to the surface of the substrate, or both in the form of particles, exposed to Sintered silver in the form of silver and particles on the surface of the substrate, sintered silver dispersed in the substrate, and located on the surface of the antimicrobial member. The antibacterial product according to claim 4, wherein part or all of the antibacterial member located under the surface layer of the sintered silver in the form of a layer is a rough surface, or a part or all of the surface layer containing sintered silver in the form of particles It is a rough surface. The antibacterial product of claim 5, wherein the rough surface is formed by sand blasting. The antibacterial product according to claim 4, wherein the surface layer of the sintered silver in the form of a layer has a thickness of 0.1 to 20 μm, or the surface layer of sintered silver in the form of particles has a thickness of 10 to 60 μm. The antibacterial product according to claim 4, wherein the surface layer containing the sintered silver in the form of particles and the antibacterial member are integrally formed. The antibacterial product according to claim 8, wherein the antibacterial member and the surface layer of the sintered silver in the form of particles comprise, in an amount of from 1 to 60 parts by weight, of the sintered silver in the form of particles, based on 100 parts by weight of the plastic. The antibacterial product of claim 4, wherein the sintered silver in the form of particles comprises mineral particles or rock-type particles in its core. The antibacterial product according to claim 10, wherein the weight ratio of the mineral particles or the rock type particles to the sintered silver is 100: 0.1 to 10. A method of manufacturing an antimicrobial product comprising at least one antimicrobial component, the method comprising: (1) adding and dissolving a silver salt compound powder in water or a polar organic solvent Finally, preparing a silver salt solution; (2) coating a silver salt solution on the antibacterial member; and (3) sintering the silver salt compound coated on the antibacterial member at a temperature of 440 ° C to 1000 ° C under a nitrogen atmosphere, thereby Forming a surface layer comprising sintered silver in the form of a layer on the antimicrobial component, wherein the atmosphere in the system undergoing the sintering process comprises nitrogen in an amount of from 95 to 100 vol%; wherein the antimicrobial product is a food container . The method of claim 12, wherein the material for the antimicrobial product is selected from the group consisting of metal, glass, ceramic, stone, mineral, and mixtures thereof. The method according to claim 12, wherein in the step (1), 1 to 10 parts by weight of the silver salt compound powder is added to 100 parts by weight of water or a polar organic solvent. The method of claim 12, wherein the silver salt compound is selected from the group consisting of silver carbonate, silver chlorate, silver chloride, silver chromate, silver vanadate, silver manganate, silver nitrate, silver nitrite, perchloric acid. Silver, silver phosphate, silver acetate, and mixtures thereof. The method of claim 12, wherein the rough surface is formed on the antimicrobial member before the step (2), and the silver salt solution is coated on the rough surface in the step (2). The method of claim 16, wherein the rough surface is formed by sand blasting. The method of claim 12, wherein A thickness of 20 μm forms a surface layer comprising sintered silver in the form of a layer. The method of claim 12, further comprising, after step (3), manufacturing an antimicrobial product comprising the antimicrobial component. A method of manufacturing an antimicrobial product comprising at least one antimicrobial component, the method comprising: (1) adding and mixing mineral particles or rock-type particles and a silver salt compound powder to water or a polar organic solvent, and at a temperature of 440 ° C to 1000 ° C The silver salt compound is sintered under a nitrogen atmosphere to prepare sintered silver in the form of particles having mineral particles or rock-type particles in its core, wherein the nitrogen atmosphere is contained in a system in which a sintering process is performed. a quantity of nitrogen of 95 to 100 vol%; (2) mixing and heating the sintered silver in the form of plastic material and particles to prepare pellets; (3) molding the antimicrobial member from the pellet; and (4) making the The antimicrobial component is subjected to sand blasting to expose the sintered silver in the form of particles to the surface of the antimicrobial component, wherein the antimicrobial product is a food container. The method according to claim 20, wherein in the step (1), the weight ratio of the mineral particles or the rock particles to the silver salt compound powder is 100: 0.1 to 10, and the mineral particles or the rock particles and the silver are contained. The weight ratio of the mixture of the salt compound powder to water or the polar organic solvent is from 1 to 70:100. The method of claim 20, wherein the silver salt compound is selected from the group consisting of silver carbonate, silver chlorate, silver chloride, silver chromate, silver vanadate, Silver manganate, silver nitrate, silver nitrite, silver perchlorate, silver phosphate, silver acetate, and mixtures thereof. The method of claim 20, wherein in step (2), the weight ratio of the plastic material to the sintered silver in the form of particles is from 100:1 to 60. An antibacterial metal scrubber manufactured by the following process: (1) adding and dissolving 1 to 10 parts by weight of a silver salt compound powder in 100 parts by weight of water or a polar organic solvent to prepare a silver salt solution; (2) a silver salt solution impregnated with a metal scrubber made of metal fibers to coat a part or all of the fiber surface of the metal scrubber; and (3) a nitrogen atmosphere at a temperature of 440 ° C to 1000 ° C Sintering a silver salt compound coated on a part or all of the fiber surface of the metal scrubber to form a surface layer containing silver sintered under a nitrogen atmosphere on a part or all of the fiber surface of the metal scrubber The nitrogen atmosphere is such that the atmosphere in the system in which the sintering process is carried out contains nitrogen in an amount of from 95 to 100 vol%. The antibacterial product of claim 1, which further comprises silver oxide sintered under an oxygen atmosphere. A scrubber comprising at least one antimicrobial component, wherein the antimicrobial component comprises a surface layer comprising sintered silver, the sintered silver being sintered at a temperature of 440 ° C to 1000 ° C under a nitrogen atmosphere by sintering a silver salt The silver obtained by the compound, wherein the nitrogen atmosphere is in an atmosphere in the system in which the sintering process is carried out, comprising 95 to 100 vol% The amount of nitrogen.