JPH09254976A - Easy open can lid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily open a can, make drinking easy, and easily pour contents by adhering plug plates made of aluminum or a plastic to a part of a peripheral edge of an opening of a can lid panel inseparably with a resin and adhering other part with the resin in an openable manner by fingers. SOLUTION: At a mouthpiece 2 and an air hole 3 formed on a can lid panel 1 made of a steel plate or surface treated steel plate, a mouthpiece plug plate 4 and an air hole plug plate 5 made of aluminum, a plastic, a resin or paper which are different from that of the can lid panel 1 are adhered with a resin to the peripheral edges of the mouthpiece 2 and the air hole 3 for blocking them so as to form an adhesive section 6. A part 6a of the adhesive section 6 is fast adhered in such a manner that the mouthpiece plug plate 4 and the air hole plug plate 5 can not separate from the can lid panel 1. Also, other part separates from a peripheral edge of an opening of the mouthpiece 2 and the air hole 3 being pressed down by fingers, so as to be adhered in an openable manner. Accordingly, an opening section can be formed into an optional easy-to- drink and easy-to-pour shape, and opening of the plug plates can be also facilitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an easy-open can lid for opening a can by breaking an opening formed in a can lid panel of a can.

[0002]

2. Description of the Related Art As a can lid for a can containing various beverages such as beer, juice and coffee, an easy open can lid is widely used in which an opening formed in a panel of the can lid is broken by a finger to open the can. There is.

As an easy-open can lid, a score line is engraved on a metal can lid panel, and a tab attached by being supported by a fulcrum at a central portion of the can lid panel is lifted, so that the action point portion of the tab is used. Push down the score,
Stain tab method of breaking the opening to open the can, lifting the tab supported by the fulcrum in the center of the can lid panel, tearing the score to separate it from the can lid panel, breaking the opening to open the can There are known a tear-off type can lid and an eco-top type can lid in which a mouth and an air hole formed on a metal can lid panel are pressed down with a finger to break and open the can.

FIG. 11 is a plan view of a conventional eco-top type can lid, FIG. 12 is a sectional view taken along the line DD of FIG. 11, and FIG. 13 is an enlarged sectional view of a drinking spout. As shown in the drawings, a can lid panel 1 made of a metal plate is provided with a circular drinking port 11 and a circular air hole 12 having a diameter smaller than that of the drinking port 11.

The drinking spout 11 and the air hole 12 are cut into the can lid panel 1 except for a slight uncut portion 13 to form a plug portion. The back surface of the portion is adhered by a resin 17. An annular rib 14 is provided on the outer periphery of the spout portion 11 and an air hole portion 12 is provided.
Semi-circular ribs 15 are formed on the outer periphery of each, and a winding portion 16 is formed on the outer peripheral edge of the can lid panel 1. When the can is opened, the stopper portion forming the drinking spout portion 11 and the air hole portion 12 is pushed down with a finger and opened.

[0006] According to such an eco-top type can lid, the plug portion forming the drinking port portion 11 and the air hole portion 12 is cut leaving a slight uncut portion 13.
Since the back surface of the cut portion is adhered by the resin 17, the plug portion can be easily broken and opened with a slight force by pushing with a finger.

[0007]

The above-mentioned Stein-tab type and tear-off type easy open can lids have the following problems. That is, since the opening of the metal can lid is formed by the score, when the surface treatment coating is formed on the can lid panel, the surface treatment coating is not damaged when the score is formed on the can lid. Occurs. It is difficult to engrave score lines without causing damage to such a surface-treated coating, and as a result of requiring a step of repairing the damaged surface-treated coating, in addition to requiring labor for repair work, This leads to higher production costs.

The eco-top type can lid has the following problems. That is, since the plugs forming the mouthpiece portion 11 and the air hole portion 12 of the opening are formed by cutting the can lid panel 1 itself and press-molding it as described above, its shape is press-molding. There is no choice but to be restricted from the viewpoint of sex. Therefore, the opening cannot be formed into an appropriate shape in consideration of ease of drinking and pouring, and it is difficult to form a shape other than axial symmetry.

Further, since the can lid panel 1 and the plug portion forming the opening mouth portion 11 and the air hole portion 12 are naturally made of the same material, the can lid panel 1 is made of a steel plate capable of ensuring the strength. In such a case, the stoppers forming the drinking spout 11 and the air hole 12 cannot be made of another material that facilitates can opening.

Further, the height of the plugs forming the drinking spout 11 and the air hole 12 is restricted from the viewpoint of press formability and cannot be made too high.
1 and the plug portion forming the air hole portion 12 are hard to be pushed into the can.

Therefore, the object of the present invention is to solve the above-mentioned problems, to make the can lid panel of the can lid made of a steel plate capable of ensuring the strength, and to make the stopper part of another material which is easy to open. Furthermore, it is to provide an economical easy-open can lid that can be formed into an opening having an appropriate shape in consideration of ease of drinking and pouring, and has excellent can openability.

[0012]

According to the present invention, there is provided an easy-open can lid in which an opening formed in a can lid panel of a can body is broken to open a can. The can lid has an opening having a predetermined shape. And a can lid panel, and the can lid panel for closing the opening of the can lid panel and a separate cap plate, the can lid panel is made of a steel plate or a surface-treated steel plate, The stopper plate is made of aluminum, plastic, resin or paper, and the stopper plate is made of a resin so as not to be separated from the can lid panel at a peripheral edge of the opening of the can lid panel. It is characterized in that it is adhered by means of resin, and the other part is adhered by means of resin so that it can be opened by pushing down with a finger.

According to the present invention, the can lid panel of the can lid is
Since it is made of a steel plate or a surface-treated steel plate, desired strength can be secured. Further, since the stopper plate is separate from the can lid panel and is made of aluminum, plastic, resin, or paper, the opening can be formed in any shape that is easy to drink and pour. It's easy.

From the viewpoint of facilitating can openability, the stopper plate may project from the surface of the can lid panel to a height of 3 mm or more and not more than the height of the winding portion formed on the peripheral edge of the can lid panel. preferable. Furthermore, from the viewpoint of preventing the finger from touching and damaging the end face of the opening when the opening is broken, and from the viewpoint of preventing corrosion when the material used is a plated steel plate, etc. It is preferable that either one or both of the end surface and the end surface of the stopper plate closing the opening be covered with a resin.

[0015]

1 is a plan view showing an embodiment of an easy open can lid of the present invention before a stopper plate is attached, and FIG. 2 is a state after the stopper plate is attached. FIG. 3 is a plan view of FIG. 3, and FIG. 3 is a sectional view taken along line AA of FIG. As shown in FIG. 1, for example, the thickness is 0.13 to 0.3.
A can lid panel 1 made of a surface-treated steel plate of 2 mm has a circular drinking port 2 and a circular air hole 3 having a diameter smaller than that of the drinking port 2 as openings.

As shown in FIG. 2, the drinking hole 2 and the air hole 3 are made of aluminum having a thickness of 0.10 to 0.26 mm, which is separate from the can lid panel 1 for closing the drinking hole 2 and the air hole 3. , Plastic, resin or paper stopper plate 4 for air and stopper plate 5 for air hole are adhered to the peripheral edges of the mouth 2 and air hole 3 of the can lid panel 1 with resin to form an adhesive portion 6. ing. A part 6a of such an adhesive portion 6 is firmly adhered so that the faucet stopper plate 4 and the air hole stopper plate 5 cannot be separated from the can lid panel 1, and the other part is By pushing down with a finger, it is separated from the peripheral edge of the opening of the mouth 2 and the air hole 3 and is adhered so that it can be opened.

A ring-shaped rib 14 is formed on the outer periphery of the mouthpiece portion 2, and a semi-ring-shaped rib 1 is formed on the outer periphery of the air hole portion 3.
5 is formed, and the winding portion 16 is formed on the outer peripheral edge of the can lid panel 1, like the conventional can lid panel.

The heights of the tap plate 4 for the mouthpiece and the plug plate 5 for the air hole are preferably 3 mm or more and less than the height of the winding portion 16 formed on the outer peripheral edge of the can lid panel 1. By setting the height of the tap plate 4 for the mouthpiece and the plug plate 5 for the air hole to be 3 mm or more, the tap plate 4 for the mouthpiece and the air hole plug plate 5 can be pushed deeper into the can than before. It becomes possible to increase the outflow rate of the beverage in the can, which improves the ease of drinking and the ease of pouring. If the height is less than 3 mm, the above effect becomes insufficient. If the height of the spout stopper plate 4 and the air hole stopper plate 5 exceeds the height of the winding portion 16 formed on the outer peripheral edge of the can lid panel 1, the can is accidentally opened during transportation. Trouble occurs easily.

The entire circumference of the opening end surface of the mouth 2 and the air hole 3 of the can lid panel 1 and the entire circumference of the end surface when the faucet stopper plate 4 and the air hole stopper plate 5 are made of aluminum are covered with resin. Is preferably provided. As described above, by coating with the resin, it is possible to prevent the finger from contacting and damaging the end face of the opening when the opening is broken.

As shown in the enlarged sectional view of the mounting portion of the tap plate 4 for drinking spouts in FIG. 4, the contents contained in the can are beer, cider, cola, etc. and are dissolved in the contents. In the case of a positive pressure can in which the can lid panel 1 swells due to the gas pressure of carbon dioxide, the tap plate 4 for the mouthpiece is attached to the can lid panel 1.
It is necessary to form an adhesive portion 6 by adhering to the lower surface of the peripheral edge of the drinking mouth 2 with a resin. The same applies to the air hole plug plate 5.

Also, as shown in FIG. 5 in an enlarged cross-sectional view of the mounting portion of the tap plate 4 for drinking spouts, the contents to be accommodated in the can are hot-packed and retort-sterilized, such as a juice drink, after filling. In the case of a negative pressure can in which the can lid panel 1 is recessed due to the pressure reduction inside the can due to cooling, the tap plate 4 for a drinking spout is adhered to the upper surface of the peripheral edge of the drinking spout 2 of the can lid panel 1 with a resin to bond the adhesive portion 6 Need to be formed. The same applies to the air hole plug plate 5.

FIG. 6 is a plan view showing another embodiment of the easy-open can lid of the present invention before the stopper is attached, and FIG. 7 is a plan view showing the state after the stopper is attached. 8 and 9 are cross-sectional views taken along the line BB of FIG. FIG.
As shown in FIG. 1, in this embodiment, for example, a can lid panel 1 made of a surface-treated steel sheet having a thickness of 0.13 to 0.32 mm.
, Both ends of which are rounded with different radii
Two continuous elongated openings 7 are formed.
A rib 8 is formed on the outer periphery of the.

As shown in FIG. 7, a single stopper plate 9 separate from the can lid panel 1 is attached to the elongated opening 7 to close it. The stopper plate 9 has, for example, a thickness of 0.
It is made of resin of 10 to 0.26 mm, and is adhered by resin to the peripheral edge of the elongated opening 7 of the can lid panel 1 to form an adhesive portion 6. A part 6a of the adhesive portion 6 is separated from the can lid panel 1. It is firmly attached so that it is not obtained, and most of the other parts are attached so that they can be opened by pressing down with a finger. Stopper plate 9
Has a height of 3 mm or more and less than or equal to the height of the double winding portion 15 formed on the outer peripheral edge of the can lid panel 1, and the elongated opening 7 of the can lid panel 1 is formed. As described above, the end face is covered with the resin.

As shown in a plan view of FIG. 9 and a sectional view taken along the line CC of FIG. 9, a bead 10 is provided at one end of the stopper plate 9, and the portion provided with the bead 10 is strongly bonded. given that,
Since the stopper plate 9 is bent from the bead 10 portion at the time of opening, the can can be opened more easily.

According to the embodiment described above, the can lid panel 1
In addition, since one continuous elongated opening 7 in which the mouth and the air hole are integrated is formed, the opening is easier than that of the two mouth type in which the mouth and the air hole are different. Moreover, it is easy to drink and pour.

As described above, in the easy-open can lid of the present invention, the can lid panel and the stopper plate that closes the opening of the can lid panel are formed separately, and their materials are also different. That is, the can lid panel is made of a steel plate or a surface-treated steel plate, and the stopper plate is made of aluminum, plastic, resin or paper, and is adhered to the can lid panel by the resin. Therefore, desired strength can be imparted to the can lid panel, and the can openability of the stopper plate is excellent.

Further, even if the opening formed in the can lid panel 1 is of a two-mouth type consisting of a drinking mouth and an air hole as shown in FIGS. Even the one-mouth type having three continuous elongated openings 7 can be formed into any shape that is the easiest to swallow and pour.

Further, when score lines are engraved on the can lid panel like the Stein tab type and tear off type easy open can lids, the surface treatment film of the panel is damaged, and repair is required. It is possible to improve workability and economy.

[0029]

As described above, according to the present invention,
The can lid panel of the can lid can be made of steel plate or surface treated steel plate that can secure the strength, and the stopper part can be made of a material that can be easily opened. Furthermore, the can lid panel must have an appropriate shape considering ease of drinking and pouring. An industrially useful effect is obtained in which an economical easy-open can lid that can be formed in an opening and has excellent can openability is obtained.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of an easy open can lid of the present invention, showing a state before a stopper is attached.

FIG. 2 is a plan view showing a state after a stopper is attached to the can lid panel of FIG.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is an enlarged cross-sectional view showing an example of a mounting portion of a tap plate for a drinking spout.

FIG. 5 is an enlarged cross-sectional view showing another example of the attachment portion of the tap plate for a drinking spout.

FIG. 6 is a plan view showing another embodiment of the easy open can lid of the present invention, showing a state before the stopper is attached.

FIG. 7 is a plan view showing a state after the stopper is attached to the can lid panel of FIG.

8 is a sectional view taken along line BB of FIG.

FIG. 9 is a plan view showing a state after a plug portion is attached, showing still another embodiment of the easy-open can lid of the present invention.

FIG. 10 is a sectional view taken along line CC of FIG. 9;

FIG. 11 is a plan view of a conventional eco-top type easy open can lid.

FIG. 12 is a sectional view taken along line DD of FIG. 11;

13 is an enlarged cross-sectional view of the drinking spout in FIG.

[Explanation of symbols]

 1 can lid panel 2 spout 3 air hole 4 spout plug plate 5 air hole plug plate 6 adhesive part 6a part of adhesive part 7 elongated opening 8 rib 9 plug plate 10 bead 11 spout part 12 air hole part 13 cut Remaining part 14 Rib 15 Rib 16 Winding part

Front Page Continuation (72) Inventor Reiko Sugihara 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Steel Pipe Co., Ltd.

Claims (3)

[Claims] 1. An easy-open can lid in which an opening formed in a can lid panel of a can body is broken to open a can, wherein the can lid is a can lid panel having an opening of a predetermined shape, and the can. The can lid panel for closing the opening of the lid panel and a separate plug plate, the can lid panel is made of a steel plate or a surface-treated steel plate,
The stopper plate is made of aluminum, plastic, resin or paper, and the stopper plate is made of a strong resin so as not to be separated from the can lid panel at a peripheral edge of the opening of the can lid panel. An easy open can lid characterized in that it is adhered by a resin, and the other part is adhered by a resin so that it can be opened by pushing down with a finger. 2. The easy according to claim 1, wherein the stopper plate projects from the surface of the can lid panel to a height of 3 mm or more and not more than the height of a winding portion formed on the peripheral edge of the can lid panel. Open can lid. 3. The entire circumference of one or both of an end surface of the opening formed in the can lid panel and an end surface of the stopper plate closing the opening is covered with resin.
The easy open can lid according to claim 1.