JPH05178346A - Stay-on tub and manufacture thereof - Google Patents

Abstract

PURPOSE:To make it possible to detach and collect a detachable piece from the tab to use it for sales promotion by forming the detachable piece which is partially and integrally connected to a finger hole part, in the finger hole part of the stay-on tab. CONSTITUTION:In order to make it possible to collect a part of a tab and use a part of sales promotion such as that a premium is given to the consumer who sends a specified number of partial tabs to the maker, a detachable piece 9, which is formed with the same diameter as the internal shape of a finger hole 8, and is integrally connected to the finger hole 8 by a connecting part 9a, is formed in the finger hole 8. On the detachable piece 9, a stamp consisting of characters or pictures, etc., for sales promotion is formed by a press process. The detachable piece 9 is pushed out by a finger tip after a beverage can is opened by operating a tab 40, and is separated from the tab 40 by repeating motions to push in and out several times.

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 to FIG. 6 show an example of an aluminum alloy can lid using such a steion tab.
In this example, a score line 3 is formed by forming a score line 3 having a substantially U shape on the surface of the can lid 1, and a stain tab (hereinafter abbreviated as a tab) is provided on one end side of the score part 3. .) 4 are joined via rivets 5.

Here, the tab 4 has a push-down portion 6 formed on one end side thereof so as to overlap the score portion 4, while a pull-up portion 7 for hanging an operator's fingertip on the other end side. The finger hole portion 8 is formed between the pulling portion 7 and the rivet 5 for improving 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 above-mentioned tab can be usually manufactured by pressing (punching) an aluminum alloy base plate. 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]

According to a first aspect of the present invention, in the Stein tab, a separation piece is formed in the finger hole portion so as to be partially integrated with the finger hole portion.

According to a second aspect of the present invention, there is provided a method of manufacturing a stay tab, wherein a part of the raw plate in the finger hole portion is left uncut to form a separating piece partially connected to the finger hole portion. By this,
The Steion tub according to claim 1 can be obtained.

[0011]

According to the tab of the present invention, the separating piece can be separated from the finger hole portion and collected.

[0012]

1 to 3 show a tab 40 according to an embodiment of the present invention.
It will be explained based on. 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.

In the tab 40 of this embodiment, a cutout which is formed in the finger hole portion 8 in the same shape as the inner shape of the finger hole portion 8 and which is integrally connected to the finger hole portion 8 at the connecting portion 9a. This is different from the conventional tab 4 described above in that the piece 9 is formed.

The separation piece 9 is formed with a stamp (not shown) made of characters or figures for sales promotion by press working.

The width W of the connecting portion 9a is 1.0 to 2.0.
It is formed to have a size of about mm. Further, at both ends in the width direction of the connecting portion 9a, two notches are provided toward the inside of the separating piece 9. Length of this cut L
Is formed to have a thickness of about 1.0 to 1.5 mm. 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.

The tab 40 of this example can also be manufactured by punching an aluminum base plate as in the conventional case. Here, in the manufacturing method of this example, unlike the conventional method, the raw plate in the finger hole portion 8 is processed in a state where only the connecting portion 9a is left uncut. As a result, it is possible to form the separating piece 9 in the finger hole portion 8 that is partially integrally connected to the finger hole portion 8. Further, in the tab 40 of this example, the inner peripheral edge of the finger hole portion 8 is not curled.

In addition, in the tab 40 of this example, a stamp is formed by pressing at a position corresponding to the separating piece 9 when the finger hole portion 8 is processed or before and after the processing.

According to the tab 40 of this example, the operation of operating the tab 40 to open the beverage can, pushing out the separating piece 9 with a fingertip, and then returning it in the opposite direction is repeated once or twice. To easily separate the tab 40 from the tab 40.
Can be separated. Therefore, this separating piece 9
Only the can can be collected in a state of being separated from the can lid 1, and there is an advantage that the sales promotion can be performed in the Stein tub.

In addition, in the tab 40 of this example, since the cut-out piece 9 is engraved, it can be confirmed that the cut-off piece 9 is obtained from a specific can, and there is no risk of misidentification or forgery. There is also an advantage that it can be prevented.

Further, in the tab 40 of this example, the connecting portion 9a
Since the notch having the length L is provided in, the bending fulcrum of the separating piece 9 is slightly moved to the center side of the separating piece 9, whereby the separating piece 9 is easily bent and the separation can be facilitated.

In addition, in the tab 40 of this example, the stamp is formed on the separating piece 9 by pressing, but the separating piece 9 is specified by coloring, for example, and the separating piece 9 is specified. You may do it.

Further, in the tab 40 of this example, the connecting portion 9a
It is assumed that the notch with the length L is provided in the
It is possible to omit the formation of the notch as long as it does not interfere with the removal of the notch.

[0024]

As described above, in the Steion tab according to the present invention, since the separating piece which is partially integrated with the finger hole portion is formed in the finger hole portion, the separating piece is separated from the tab and collected. Therefore, it is possible to carry out so-called sales promotion in Steintab.

Further, according to the method for manufacturing a steion tab according to the present invention, a part of the raw material plate in the finger hole portion is left uncut to form a separating piece partially connected to the finger hole portion. It is possible to obtain the above-mentioned Steion tub according to the present invention.

[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 an enlarged cross-sectional view taken along the line BB of FIG.

FIG. 3 is an enlarged sectional view of a main part taken along the line CC of FIG.

FIG. 4 is a plan view showing a state in which a conventional Steion tab is attached to a can lid.

FIG. 5 is a plan view of a conventional Steion tub.

6 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 8 Finger hole 9 Separation piece 40 Stein tab

Claims (2)

[Claims] 1. A Stein tub characterized in that in the finger hole portion, a separating piece is formed which is partially integrally connected to the finger hole portion. 2. A method for manufacturing a Stein tab having a finger hole portion by punching a raw plate, wherein a part of the raw plate in the finger hole portion is left uncut to partially form the finger hole portion. A method of manufacturing a steion tub, comprising forming a separating piece integrally connected to a sheet.