JPH05200470A - Manufacture of stay-on tab - Google Patents

Abstract

PURPOSE:To remove a resin plate from a tab and to collect only the plate by arranging, on one side of a finger hole part, the resin plate that is longer than the finger hole part, pressing the plate and press-fixing the side edge on the circumference of the finger hole part. CONSTITUTION:After cutting off a tab 40 from an aluminum blank, a resin base plate having long-sized shape longer than the inner diameter of the finger hole part 8 is arranged on the side of the finger hole part 8 that is provided on the tab 40. Both the resin base plate and the tab 40 are pressed with metal mold, the resin base plate is cut at a prescribed length to press-fit the resin plate 41 on the tab 40; and both the end parts of the resin plate 41 are curled to form curled parts for fixing. Consequently, after pulling up a pull-up part 7, the resin plate 41 is pushed out to the direction of the lid of a can, is easily removed from the tab 40, and only the resin plate 41 is collected in a condition distanced from the lid of the can.

Description

Detailed Description of the Invention

[0001]

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

[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 it is an object of the present invention to provide a method of manufacturing a tab which is of the steion type but is partially recoverable. It is a thing.

[0009]

According to a first aspect of the present invention, there is provided a method of manufacturing a tab, wherein a resin plate having a length longer than an inner diameter of the finger hole portion is arranged on one surface of the finger hole portion, and the resin plate is pressed. The resin plate is attached to the finger hole portion by pressing the side edge thereof against the peripheral edge of the finger hole portion.

[0010]

According to the tab manufacturing method of the present invention, it is possible to manufacture a tab that can be collected by removing the resin plate from the finger holes.

[0011]

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 of this embodiment is different from the above-mentioned conventional tab 4 in that a resin plate 41 formed in a rectangular plate shape is attached to the lower surface of the peripheral edge of the finger hole portion 8. .

The resin plate 41 is made of synthetic resin such as polyethylene or polypropylene.

Further, a curl portion 41a curled in the direction of the tab 40 is formed at both ends of the resin plate 41 in the longitudinal direction of the tab 40, and the curl portion 41a is formed.
The resin plate 41 is attached to the peripheral edge of the finger hole portion 8 by fitting a into the curl portion formed on the peripheral edge of the finger hole portion 8 (see FIG. 3).

Markings (not shown) made of characters or figures for sales promotion are formed on the front surface or the back surface of the resin plate 41. 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.

After cutting off the tab 40 from the aluminum base plate as in the conventional case, a long resin base plate S is arranged on one surface side of the finger hole portion 8 provided in the tab 40, and the resin base plate S is formed. The plate S and the tab 40 are pressed together by a mold, the resin base plate S is cut into a predetermined length to form a resin plate 41, and the resin plate 41 is pressure-bonded to the tab 40 to form a resin plate. Both ends of 41 are curled to form curled portions 41 a, and the resin plate 41 is fixed to the finger hole portions 8.

In addition, in the tab 40 of this example, at the time of pressing the resin base plate S, or before and after the processing, a predetermined position of the resin base plate S or the resin plate 41.
Then, a stamp is formed by press working.

Then, the tab 40 to which the resin plate 41 is attached as described above is attached to the can lid 1 as in the conventional case, and the can lid 1 is attached to the can body to manufacture a beverage can or the like.

Also in the tab 40 of this embodiment, the score portion 3 can be opened by pulling up the pull-up portion 7 and used. Here, in the tab 40 of this example, since the resin plate 41 is attached by crimping to the finger hole portion 8, the resin plate 4 is pulled up after the pulling portion 7 is pulled up.
This resin plate 4 by pushing 1 toward the can lid 1
1 can be easily removed from the tab 40. Therefore, there is an advantage that only the resin plate 41 can be collected in a state of being separated from the can lid 1, and it becomes possible to carry out a sales promotion in the tab of the Steion type.

Further, in the tab 40 of this example, since the resin plate 41 is engraved, it can be confirmed that the resin plate 41 is obtained from a specific can, and there is a risk of misidentification or forgery. There is also an advantage that it can be prevented.

Next, a modified example of the tab manufacturing method according to the above-described embodiment will be described.

In the method of the above embodiment, the resin plate 41 is attached to the tab 40 after the tab 40 is cut off from the aluminum base plate. However, in the modified method, before the tab 40 is cut off from the aluminum base plate. State, that is, the tab 40 is connected to the aluminum base plate, by the same means as described above, the finger hole portion 8
The resin plate 41 is attached to the.

The method of the above-described embodiment has a disadvantage that the work of aligning the finger hole portion 8 of the cut-off tab 41 and the resin base plate S is complicated, but the method of the modified example has a disadvantage. Since the resin plate 41 is attached to the tab 40 connected to the plate, there is an advantage that both can be easily aligned and the working efficiency can be improved.

In the tab 40 of the present embodiment, the stamp is formed on the resin plate 41 by pressing. However, for example, the resin base plate S may be preliminarily coated with a paint, and the resin plate 41 may be colored by the paint. A pattern or the like may be provided to identify the resin plate 41. Furthermore, for example, the resin plate 41 may be specified by molding the resin plate 41 and then coloring the resin plate 41.

Further, in the method of this example, the tab 40
After arranging the long resin base plate S on one surface side, the resin base plate S is cut and curled while being attached to the finger hole portion 8. For example, the long resin base plate Without using S, the resin plate 41 formed in a predetermined length in advance is arranged on one surface side of the finger hole portion 8,
The resin plate 41 may be attached to the periphery of the finger hole portion 8 by pressure bonding and curling. In short, if the resin plate 41 is formed longer than the inner diameter of the finger hole portion 8, the side edge of the resin plate 41 can be attached to the peripheral edge of the finger hole portion 8 by pressure bonding.

[0027]

According to the method for manufacturing a stain tab according to the present invention, a resin plate longer than the inner diameter of the finger hole portion is arranged on one side of the finger hole portion, and the side edge of the resin plate is pressed by pressing the resin plate. Since the resin plate is attached to the finger hole portion by crimping to the periphery of the finger hole portion, the resin plate can be removed from the tab and collected by using the tab manufactured according to the present invention in the product. This makes it possible to carry out so-called sales promotion on the Steion tub.

[Brief description of drawings]

FIG. 1 shows an embodiment of a method of manufacturing a steion tab according to the present invention, and is a plan view of the steion tab.

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 Resin plate

Claims (1)

[Claims] 1. A resin plate having a length longer than the inner diameter of the finger hole is arranged on one surface of the finger hole, and the resin plate is pressed to press the side edge of the resin plate to the peripheral edge of the finger hole. A method for manufacturing a steion tab, wherein the resin plate is attached to the finger hole portion.