JPH05200469A - Stay-on tab and its manufacture - Google Patents

Abstract

PURPOSE:To remove a removal piece from a tab and to collect it by inserting inside a finger hole part the removal piece that is formed in nearly the same shape as the finger hole part. CONSTITUTION:The stay-on tab 40 is constituted of the body 42 of the tab and a removal piece 41 which is nearly the same shape as the finger hole part 8 but is formed in slightly smaller size and which is inserted into the inside of the finger hole part 8. Accordingly, as the removal piece 41 is attached to the finger hole part 8, by pushing out the removal piece 41 out of the finger hole part 8 after raising a pull-up part 7, the removal piece 41 is easily removed from the tab 40, and only the removal piece 41 is collected in a condition distanced from the lid of a can.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tin can tab for opening a can attached to a can lid of a beverage can and a method for manufacturing the same.

[0002]

2. Description of the Related Art In recent years, the open can portion of a can lid such as a beverage can has been
In order to prevent various harmful effects caused by discarding the tab after opening the can, a so-called Steion tab in which the tab and the can lid are partially connected even after the can is opened is being adopted.

FIG. 4 shows an example of an aluminum alloy can lid in which such a Stein tab is used. In this example, a substantially U-shaped cut line 2 is formed on the surface of the can lid 1. Is formed to define the score portion 3, and a Stein tab (hereinafter abbreviated as a tab) 4 is joined to one end side of the score portion 3 via a rivet 5.

Here, the tab 4 has a push-down portion 6 formed on one end side thereof so as to overlap with the score portion 3, while a pull-up portion 7 for hanging an operator's fingertip on the other end side thereof. The finger hole portion 8 is formed between the pulling portion 7 and the rivet 5 to improve the operability when opening the can.
The pull-down portion 6 pushes the score portion 3 downward by pulling the pull-up portion 7 upward, whereby the score portion 3 cuts the score line 2.
The can lid 1 is opened by being bent downward while being torn against.

The tab 4 is usually conveyed by punching an aluminum alloy base plate except for a part thereof, and connecting the part to the base plate. Manufactured by separating from the plate. Here, the finger hole portion 8 is formed by punching out the portion and curling the peripheral edge.

By the way, in a conventional beverage can using a tab of a type that is detached from the can lid (that is, a type that is not the Steion type), as a part of so-called sales promotion, a predetermined number of detached tab portions (ring pulls) are provided. There were occasions such as campaigns to give gifts to consumers who collected (about 10 pieces) and sent to manufacturers.

However, in the Steion type tab, since the tab is fixed to the can lid, it is not possible to collect only the tab and the sales promotion as described above cannot be performed. .

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a tab and a method for manufacturing the same, which are of the steion type and which can be partially recovered. To do.

[0009]

The tab according to claim 1 is
The removal piece formed in substantially the same shape as the finger hole portion is inserted inside the finger hole portion.

According to a second aspect of the present invention, in the tab according to the first aspect of the present invention, the side surface of the detachable piece is formed with a recess for fitting with the inner surface of the finger hole portion.

According to a third aspect of the present invention, there is provided a method for manufacturing a tab in which a detachable piece having a shape substantially the same as that of a finger hole portion is prepared, and the detachable piece is fitted into the finger hole portion of the tab body attached to the can lid. Has been done.

[0012]

According to the tab of the first aspect, the detachable piece can be detached from the finger hole portion and collected. According to the tab manufacturing method of claim 3, the tab according to claim 1 can be obtained.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the structure of a tab 40 according to an embodiment of the present invention will be described with reference to FIGS. The same components as those of the conventional tab 4 described above are designated by the same reference numerals, and detailed description thereof will be omitted.

The tab 40 according to this embodiment has a tab body 42 having the same structure as that of the conventional tab 4 and a finger hole portion 8 of the tab body 42. The removal piece 41 is inserted inside the finger hole portion 8.

As the material of the detachable piece 41, a synthetic resin such as polyethylene or polypropylene is used in this example.

As shown in FIG. 3, recesses 41a that fit into the inner surfaces of the finger hole portions 8 are formed on the two side surfaces of the detaching piece 41 that face each other at both ends in the width direction. Here, in the tab 40 of this example, the concave portion 41a and the inner surface of the finger hole portion 8 are substantially in close contact with each other,
It is designed so as to prevent the removal piece 41 from falling off.

As shown in FIG. 2, the two side surfaces of the detachable piece 41, which are opposed to each other at both ends in the lengthwise direction, are formed into a flat surface.

On the front surface or the back surface of the detachable piece 41, inscriptions (not shown) made of characters or figures for sales promotion are formed. The other structure is the same as that of the conventional tab 4, and the description thereof will be omitted.

Next, a method of manufacturing the tab 40 of this example will be described. First, like the conventional tab 4, the tab body 42 is manufactured by punching and then fixed to the can lid 1, and the can lid 1 is carried out from the line and stored.

On the other hand, an arbitrary resin molding means such as an injection molding method is formed to have substantially the same shape as the finger hole portion 8 and a concave portion 41a which is fitted to the inner surface of the finger hole portion 8 is formed on the side surface. The removal piece 41 is molded.
At this time, a stamp is formed on the surface of the detachable piece 41 by providing a protrusion or a concave portion for molding a character or the like on the inner surface of the resin molding die.

Then, the detaching piece 41 is fitted into the finger hole portion 8 of the tab body 42 attached to the can lid 1. At this time, the side surface of the removal piece 41 and the inner surface of the finger hole portion 8 interfere with each other, but in this example, the removal piece 41
Since the removal piece 41 is made of synthetic resin, the removal piece 41 is plastically deformed, and as shown in FIG.
The a can be fitted to the inner surface of the finger hole portion 8.

Then, the can lid 1 to which the detaching piece 41 is attached in this manner can be fixed to the can body by winding to manufacture a beverage can or the like. Since this point is the same as the conventional one, detailed description will be omitted.

Also in the tab 40 of this example, the score portion 3 can be opened by pulling up the pull-up portion 7 and used. Here, in the tab 40 of the present example, since the removal piece 41 is attached to the finger hole portion 8, the removal piece 41 is pushed out from the finger hole portion 8 after pulling up the pull-up portion 7. It can be easily removed from the tab 40. Therefore, there is an advantage that only the detachable pieces 41 can be collected in a state of being separated from the can lid 1, and a sales promotion can be performed in the Stein type tab.

Further, in the tab 40 of this example, the removal piece 41
Since the concave portion 41a that fits into the inner surface of the finger hole portion 8 is formed on the side surface of the product, there is an advantage that the detaching piece 41 can be prevented from falling off from the product during transportation or the like.

Further, in the tab 40 of this example, the removal piece 41
Since the stamp is formed on the plate, it is possible to confirm that the removal piece 41 is obtained from a specific can, and there is also an advantage that it is possible to prevent misidentification or forgery.

Further, in the method of manufacturing the tab 40 according to this embodiment, the tab body 42 is attached to the can lid 1 and carried out from the production line in the same manner as in the conventional case, and then the removal piece 41 is attached to the tab body 42. Therefore, the detachable piece 41 can be attached to the tab body 42 in an offline state (a state in which the tab and the can lid are removed from the production line), and it is possible to prevent a reduction in the manufacturing efficiency of the tab and the can lid. That is, conventionally, the tab and the can lid are manufactured at high speed on the line, and the tab body 42 is manufactured on the line.
When the detachable piece 41 is attached to, the production speed is unavoidably reduced, which leads to a decrease in production efficiency. However, according to the method of the present example, the detachable piece 41 is attached in an offline state, which is necessary. It is sufficient to attach the detaching piece 41 only to the can lid 1 and there is an advantage that the manufacturing efficiency of the can lid 1 and the tab 40 can be prevented from being lowered.

Further, when the detaching piece 41 is attached to the tab main body 42 on the tab or can lid manufacturing line, there is a possibility that the detaching piece 41 may drop on the line abruptly. Has the inconvenience of having to stop the production line. This is because these are transported at extremely high speeds on the production line for tabs and can lids. However, according to the manufacturing method of this example,
Since the removal piece 41 is attached to the tab body 42 in the off-line state, the removal piece 41 does not drop on the line, and there is an advantage that the inconvenience of stopping the line can be prevented.

In addition, in the tab 40 of this example, the removal piece 41 is formed with a stamp at the time of its molding.
For example, the stamp may be formed by pressing after molding, or the resin material may be made to contain a paint in advance, and the paint may give a color or a pattern to the detachable piece 41 so that the detachable piece 41 may be specified. You may. Further, for example, it is also possible to specify by coloring the detachable piece 41 and then coloring it.

Further, in the tab 40 of the present example, a concave portion 41a which fits into the inner surface of the finger hole portion 8 is formed on the side surface of the detaching piece 41, but the concave portion 41a is not formed but is simply a flat surface. Good. Here, when it is necessary to reliably prevent the detachment piece 41 from falling off the tab 40, for example, the detachment piece 41 is formed slightly larger than the finger hole portion 8 and the detachment piece 41 is formed. The detachable piece 41 may be fixed to the finger hole portion 8 by press-fitting it in, or the both may be fixed using an adhesive. In this case, it is desirable that the adhesive has such an adhesive strength that the consumer can easily remove the detachable piece 41.

[0030]

In the Steion tab according to the first aspect of the present invention, since the removal piece formed in substantially the same shape as the finger hole portion is inserted inside the finger hole portion, the removal piece is removed from the tab. There is an effect that it becomes possible to collect, and so-called sales promotion can be performed in the Stein tub.

According to a second aspect of the present invention, in the tab according to the first aspect, the side surface of the detachable piece is formed with a recess that fits into the inner surface of the finger hole portion.
The detachable piece can be securely held in the finger hole portion.

According to a third aspect of the present invention, in the method for manufacturing a Stein tab, a detachment piece formed in substantially the same shape as the finger hole portion is prepared, and the detachment piece is fitted into the finger hole portion of the tab body attached to the can lid. Since it is configured, it is possible not only to prevent the production efficiency of the can lid and the tab from being lowered, but also to prevent the line from being stopped due to the detachment piece falling on the line.

[Brief description of drawings]

FIG. 1 is a plan view of a steion tub according to an embodiment of the present invention.

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

FIG. 3 is a sectional view taken along line BB of FIG.

FIG. 4 is a plan view of a can lid having a conventional Steion tab attached thereto.

[Explanation of symbols]

 8 Finger Hole 40 Steion Tab 41 Removal Piece 41a Recess 42 Tab Body

Claims (3)

[Claims] 1. A Stein tub characterized in that a detachable piece formed in substantially the same shape as the finger hole portion is inserted inside the finger hole portion. 2. The stain tab according to claim 1, wherein a concave portion that fits into an inner surface of the finger hole portion is formed on a side surface of the detachable piece. 3. A manufacturing method for a steion tab, characterized in that a detachment piece formed in a shape substantially the same as a finger hole portion is prepared, and the detachment piece is fitted into the finger hole portion of the tab body attached to the can lid. Method.