JPH09254978A - Easy-opening can lid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form an opening easy in drinking and pouring and easy in opening, by sticking a plug plate formed separately from a can lid panel to a part of the peripheral edge of the opening inseparably and sticking other part with a resin by fingers in an openable manner. SOLUTION: To a mouthpiece 2 and an air hole 3 formed on a can lid panel 1 formed of a metal plate, a mouthpiece plug plate 4 and an air hole plug plate 5 made of a resin different from the can lid panel 1 are adhered by a resin to a peripheral edge of an opening for blocking the mouthpiece and the air hole so as to form an adhesive section 6. A part 6a of the adhesive 6 is adhered fast 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. Other part is pressed down by fingers so as to separate from the peripheral edge of the opening of the mouthpiece 2 and the air hole 3 and adhered in an openable manner. Thus, the opening of the can lid panel can be formed into an optional shape with which drinking and pouring are easy.

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,
Steion tab type system that breaks the opening and opens the can
Tear-off method of lifting the tab supported by the fulcrum in the center of the can lid panel, tearing off the score to separate from the can lid panel, breaking the opening to open the can, and formed on the metal can lid panel There is known an eco-top type can lid in which the opening portion of the drinking mouth portion and the air hole portion is pressed down with a finger to break and open the can.

FIG. 11 is a plan view of an eco-top type can lid,
12 is a sectional view taken along the line DD of FIG. 11, and FIG. 13 is an enlarged sectional view of the drinking spout. As shown in the drawings, a can lid panel 1 made of a metal plate such as steel or aluminum has a circular drinking port 11 and a circular air hole 1 having a diameter smaller than that of the drinking port 11.
2 are formed.

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 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, since it is necessary to make the opening into an appropriate shape in consideration of ease of drinking and pouring, it is difficult to make the shape other than the 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, to form an opening having an appropriate shape in consideration of ease of drinking and pouring, and to close the opening when the opening is broken. The object of the present invention is to provide an easy-open can lid that can be easily and sufficiently pushed into a can and has excellent can openability.

[0010]

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. It consists of a can lid panel and a stopper plate separate from the can lid panel for closing the opening of the can lid panel,
The stopper plate is adhered to the opening peripheral edge of the can lid panel by a resin so that a part thereof is strong so as not to be separated from the can lid panel and the other part is openable by pushing down with a finger. It has a special feature.

The opening of the can lid panel can be of any shape that is easy to drink and pour, and even if it is composed of two openings, a spout and an air hole, It may consist of one opening combined with the hole.

The material of the stopper plate that closes the opening of the can lid panel is not limited to the same material as that of the can lid panel, and it is required to be different from the material of the can lid panel, such as resin or paper. You can select a material that suits the characteristics.

From the viewpoint of facilitating the opening of the can, the stopper plate is projected 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 corrosion prevention 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.

[0014]

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, a can lid panel 1 made of a metal plate such as steel or aluminum is provided with a circular mouth 2 and a circular air hole 3 having a diameter smaller than that of the mouth 2 as an opening.

As shown in FIG. 2, the mouthpiece 2 and the air hole 3 are provided with a mouthpiece plug plate 4 and an air hole stopper plate 5 which are separate from the can lid panel 1 for closing the mouthpiece 2 and the air hole 3. The resin is adhered to the opening 2 of the can lid panel 1 and the openings of the air holes 3 to form an adhesive portion 6. Such an adhesive part 6
6a is a stopper plate 4 for a mouthpiece and a stopper plate 5 for an air hole.
Is firmly fixed so that it cannot be separated from the can lid panel 1, and the other part is separated from the peripheral edge of the opening of the spout 2 and the air hole 3 by pushing down with a finger and is openably bonded.

An annular rib 14 is formed on the outer circumference of the drinking spout 2, and a semi-annular rib 1 is formed on the outer circumference of the air hole 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 not less than 3 mm and not more 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 3 mm or more, it is possible to push the tap plate 4 for the mouthpiece and the air stopper plate 5 for the air hole deeper than in the conventional case. The outflow speed of the beverage in the can can be increased, and the ease of drinking and the ease of pouring are improved. 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.

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

Also, as shown in FIG. 5 which is an enlarged sectional view of the mounting portion of the tap plate 4 for drinking spouts, the contents of the container are hot-packed and retort-sterilized, such as a fruit 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. 2, in this embodiment, the can lid panel 1 made of a metal plate such as steel or aluminum is provided with one continuous elongated opening 7 whose both ends are formed in an arc shape with different radii. A rib 8 is formed on the outer circumference of the elongated opening 7. As shown in FIG. 7, the elongated opening 7 has
A single stopper plate 9 separate from the can lid panel 1 is attached to close it.

The stopper plate 9 is adhered to the peripheral edge of the elongated opening 7 of the can lid panel 1 by resin to form an adhesive portion 6, and a part 6a of the adhesive portion 6 cannot be separated from the can lid panel 1. Firmly, and most others are openly bonded by pushing down with a finger. The height of the stopper plate 9 is 3
The protrusion is formed at a height of not less than mm and not more than the height of the double winding portion 15 formed on the outer peripheral edge of the can lid panel 1, and
As described above, the end surface of the elongated opening 7 of the can lid panel 1 is covered with the resin.

As shown in the plan view of FIG. 9 and the sectional view taken along the line CC of FIG. 9, FIG. 10 shows a bead 10 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
By forming one continuous elongated opening 7 in which the mouth and the air hole are integrated, the can can be opened by pushing in only one place, and the mouth and the air hole are different from each other. It is easier to drink and pour than the mouth type.

As described above, in the easy-open can lid of the present invention, the can lid panel 1 and the stopper plate that closes the opening are formed separately. Therefore, even if the opening formed in the can lid panel 1 is a two-mouth type that is composed of a drinking mouth and an air hole as shown in FIGS.
Even the mouthpiece type having one continuous elongated opening 7 as shown in FIGS. 6 to 8 can be molded into any shape that is most easy to drink and pour.

The material of the stopper plate is not limited to the same material as that of the can lid panel 1. For example, the can lid panel is made of steel, and the stopper plate is made of aluminum, resin, paper or the like. It is possible to select an arbitrary material according to the characteristics required for the can lid.

[0027]

As described above, according to the present invention,
An opening with an appropriate shape can be formed in consideration of ease of drinking and pouring, and a stopper plate that closes the opening when the opening breaks can be easily and sufficiently pushed into the can. It has an industrially useful effect that an easy-open can lid having excellent properties 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

 ─────────────────────────────────────────────────── ─── 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 an opening of a predetermined shape, and the can. A lid plate separate from the can lid panel for closing the opening of the lid panel, wherein the lid plate is around the opening edge of the can lid panel, and a part thereof is separated from the can lid panel. Firmly so that it can not be done, and other parts can be opened by pushing down with your finger,
Easy open can lid characterized by being adhered by resin. 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.