JPH09254975A - Easy-opening can lid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily break a lid without providing a tab on a panel so as to open by adhering a plug plate to a part of a peripheral edge of an elliptical opening of a can lid panel with a resin inseparably and pressing down other part by fingers so as to adhere with the resin in an openable manner. SOLUTION: On a can lid panel 1 made of a thin steel plate, a continuous elliptical opening 2 whose both end parts are formed into arcs having different radii is formed. On the outer periphery of the elliptical opening 2, a rib 3 is provided and a winding section 6 is formed at the outer peripheral edge of the can lid panel 1. To the elliptical opening 2, an elliptical plug plate 4 made of a resin which is different from the can lid panel 1 is attached for blocking the elliptical opening 2. The plug plate 4 is adhered to the peripheral edge of the elliptical opening 2 of the can lid panel 1 by a resin so as to form an adhesive section. An end side part 5a of the elliptical opening 2 of the adhesive section 5 is adhered fast for preventing it from separating. Most other parts are pressed down by fingers so as to be adhered in an openable manner. Thus, drinking is easy, contents can be easily poured, and the can be easily and quickly opened.

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 an 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 such as steel or aluminum 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.

The plugs forming the mouthpiece 11 and the air hole 12 are cut with leaving a slight uncut portion 13, and the back surface of the cut portion is adhered by a resin 17. Therefore, it can be easily broken and opened with a slight force by pushing with a finger.

[0007]

However, the above-mentioned conventional eco-top type can lid has the following problems. That is, the conventional eco-top type can lid has an opening serving as a drinking mouth portion 11 for drinking or pouring the liquid in the can,
Since it is necessary to provide an opening that serves as an air hole 12 that serves as an air intake when drinking or pouring the liquid, it takes time and effort to break and open the plug portion that closes these two openings.

Even if the opening is formed in a rational shape, the plug portion forming the opening is formed by cutting and pressing the can lid panel itself as described above. There is no choice but to be restricted from the viewpoint of press formability. 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, 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, an object of the present invention is to solve the above-mentioned problems, form one opening in the can lid panel in consideration of ease of drinking and pouring, and use a stopper plate for closing such an opening as a can. An object of the present invention is to provide an easy-open can lid having excellent openability that can be easily broken and opened without providing a tab on the lid panel.

[0011]

SUMMARY OF THE INVENTION The present invention is 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 one oval opening. The formed can lid panel and one cantilever stopper plate separate from the can lid panel for closing the oval opening of the can lid panel. The stopper plate of
At the periphery of the oval-shaped opening of the can lid panel, a part thereof is firmly adhered by resin so that it cannot be separated from the can lid panel, and the other part is opened by resin by pushing down with a finger. It is characterized by being adhered.

According to the present invention, since the opening formed in the can lid is formed in one elliptic shape in which the drinking opening and the air hole are united, it is easy to drink and pour, and the opening is closed. It does not take much time to break the stopper plate, and the can can be opened quickly and easily.

The material of the stopper plate that closes the oval opening is not limited to the same material as the can lid panel, but may be different from the material of the can lid panel, such as resin or paper, depending on the required characteristics. It is possible to select the one with different material.

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, when the stopper plate that closes the opening is broken, it prevents the finger from touching and damaging the end face of the opening, and when the material used is a plated steel plate, etc. It is preferable that either one or both of the end face of the formed opening and the end face 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 sectional view taken along the line AA of FIG. 3 is a plan view of the stopper plate, FIG. 4 is a sectional view of the stopper plate, FIG. 5 is a plan view of a can lid to which the stopper plate is attached, and FIG. 6 is a sectional view taken along line BB of FIG. As shown in FIGS. 1 and 2, for example, in a can lid panel 1 made of a thin steel plate having a thickness of 0.13 to 0.32 mm,
One continuous elliptical opening 2 is formed, whose both ends are formed in an arc shape having different radii. A rib 3 is provided on the outer periphery of the oval opening 2, and the can lid panel 1
A winding tightening portion 6 is formed on the outer peripheral edge of the.

The oblong opening 2 has a thickness of, for example, 0.10 to 0.26 mm as shown in FIGS. 3 and 4, which is separate from the can lid panel 1 for closing the oblong opening 2. One oval stopper plate 4 made of resin is attached. As shown in FIGS. 5 and 6, the oval stopper plate 4 is used for the can lid panel 1.
A resin is adhered to the periphery of the oval opening 2 to form an adhesive portion 5. One end side part 5a of the oval opening 2 of the adhesive portion 5 is firmly adhered so that it cannot be separated from the can lid panel 1, and most of the other part is adhered so that it can be opened by pushing down with a finger. ing.

The height h of the oval stopper plate 4 is 3 mm or more and less than or equal to the height of the winding portion 6 formed on the outer peripheral edge of the can lid panel 1. By setting the height h of the stopper plate 4 to 3 mm or more, even a relatively large oval stopper plate 4 can be easily pushed into the can, so that the outflow speed of the beverage in the can is increased. This improves the ease of drinking and pouring. If the height h of the stopper plate 4 is less than 3 mm, the above-mentioned effect becomes insufficient. If the height h of the stopper plate 4 exceeds the height of the winding tightening portion 6 formed on the outer peripheral edge of the can lid panel 1, it is easy to accidentally open the can during transportation.

As shown in a plan view of FIG. 7 and a sectional view taken along line CC of FIG. 7, a bead 7 is provided at one end of the oval stopper plate 4, and a portion where the bead 7 is provided is provided. If it is a strong adhesion part,
Since the stopper plate 4 is bent from the bead 7 portion at the time of opening, the can can be opened more easily.

According to the present invention, the can lid panel 1 is formed with one continuous elliptical opening 2 in which the drinking hole and the air hole are integrated. Therefore, compared with a conventional two-neck type lid including an opening that serves as a drinking mouth and an opening that serves as an air hole, such as an eco-top type can lid, it takes more time to break the stopper plate that closes the opening. It is possible to form an opening having a reasonable shape that is easy to drink and easy to pour.

The stopper plate 4 is made of the above-mentioned resin,
It may be made of aluminum or paper, and can lid panel 1
The same material may be used, and an arbitrary material can be selected according to the characteristics required for the can lid.

The entire circumference of the end face of the oval opening 2 of the can lid panel 1,
Also, when the stopper plate 4 is made of metal, the entire circumference of the end face is covered with resin. As described above, by coating with the resin, it is possible to prevent a finger from coming into contact with and damaging the opening end surface when the opening 2 is broken.

As shown in the enlarged cross-sectional view of the mounting portion of the stopper plate in FIG. 9, the contents contained in the can are beer, cider, cola, etc., and carbon dioxide 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 gas, the stopper plate 4 is adhered to the lower surface of the peripheral edge of the oval opening 2 of the can lid panel 1 with a resin to form the adhesive portion 5. It is necessary.

Also, as shown in the enlarged sectional view of the portion where the stopper plate is attached in FIG. 10, the contents stored in the can are hot-packed and retort sterilized. In the case of a negative pressure can in which the can lid panel 1 is dented by depressurization, the stopper plate 4 may be adhered to the upper surface of the peripheral edge of the oval opening 2 of the can lid panel 1 with a resin to form the adhesive portion 5. is necessary.

[0024]

As described above, according to the easy open can lid of the present invention, one oblong opening is formed in consideration of ease of drinking and pouring. The stopper plate that closes the opening can be easily broken and opened without providing a tab on the can lid panel, which has industrially useful effects such as excellent openability.

[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 plate is attached.

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

FIG. 3 is a plan view of a stopper plate.

FIG. 4 is a sectional view of a stopper plate.

FIG. 5 is a plan view of a can lid to which a stopper plate is attached.

FIG. 6 is a sectional view taken along line BB of FIG. 5;

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

FIG. 8 is a sectional view taken along line CC of FIG. 7;

FIG. 9 is an enlarged sectional view showing a mounting portion of the stopper plate.

FIG. 10 is an enlarged cross-sectional view showing another example of the attachment portion of the stopper plate.

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 Codes] 1 can lid panel 2 oval opening 3 rib 4 stopper plate 5 adhesive part 5a part of adhesive part 6 winding part 7 bead 8 rib 11 drinking hole part 12 air hole part 13 uncut part 14 rib 15 Rib 16 Winding part 17 Resin

 ─────────────────────────────────────────────────── ─── Continuation of the front page (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 one oval opening, The can lid panel for closing the oval opening of the can lid panel is composed of one oval stopper plate which is separate from the can lid panel, and the one stopper plate is the can lid. Around the periphery of the oval opening of the panel, a portion of which is firmly adhered by resin so that it cannot be separated from the can lid panel, and
The other part is attached by resin so that it can be opened by pushing it down with your finger. 2. The one 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. Easy open can lid as described. 3. The entire circumference of one or both of the end surface of the oval opening formed in the can lid panel and the end surface of the one plug plate closing the oval opening is covered with a resin. The easy-open can lid according to claim 1, which is provided.