JPH05305375A - Manufacture of stay-on-tab - Google Patents

Abstract

PURPOSE:To separate and collect only a removal piece from a can cover by discharging and hardening a molten resin in a finger hole of a tab body after fitting the tab body to the can cover and manufacturing the stay-on-tab having the removal piece. CONSTITUTION:In the tab 40, by discharging and hardening the molten resin in the inside of the finger hole 8 of the tab body after fitting the tab body 42 to the can cover, the removal piece 41 is formed. As material of the removal piece 41, synthetic resin of ethylene vinyl acetate resin, etc., is used. The removal piece 41 is in close contacts with the inner surface of the finger hole part 8 at this peripheral edge and the lower surface is also in close contact with the upper surface of the can cover 1. Thus, only the removal piece 41 carving letter or figure, etc., can be collected by separating from the can cover and in the stay-on type tab, the sales promotion can be executed.

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 tab manufacturing method, wherein a tab body is attached to a can lid, and then a molten resin is discharged into a finger hole portion of the tab body to cure the finger. A detachment piece is formed in the hole portion to manufacture a Stein tab having the detachment piece.

[0010]

According to the tab manufacturing method of the first aspect, it is possible to manufacture a tab in which the detachable piece can be removed from the finger hole portion and collected.

[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 according to the present embodiment includes a tab body 42 having the same structure as the conventional tab 4 and a detachable piece 4 attached inside the finger hole portion 8 of the tab body 42.
1 and 1.

As the material of the detachable piece 41, in this example, a synthetic resin such as ethylene-vinyl acetate resin is used.

The removal piece 41 has its peripheral edge in close contact with the inner surface of the finger hole portion 8 and its lower surface in close contact with the upper surface of the can lid 1 (see FIGS. 2 and 3).

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, the configuration of the molten resin discharge device used in the method of this example will be briefly described.

This discharge device has been conventionally used generally, and after the resin is melted, the nozzle S (FIG. 2) is formed.
Therefore, the molten resin can be discharged at a minimum of 0.05 to 1.0 g / 1 time (varies depending on the viscosity).

On the other hand, as with the conventional tab 4, the tab body 42 is manufactured by punching and fixed to the can lid 1, and the can lid 1 is carried out from the line and stored.

Then, take out the can lid 1 from the storage place,
The finger hole portion 8 of the tab body 42 is arranged below the nozzle S of the resin discharge mechanism by a conventionally used position setting mechanism or manual work of an operator.

Then, a predetermined amount of molten resin is discharged from the nozzle S to fill the finger hole portion 8 with the resin.
As a result, the resin is cured and the finger hole portion 8
A detachment piece 41 can be formed and attached inside.

Then, a stamp is formed on the surface of the detachable piece 41 by pressing.

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 this example, since the removal piece 41 is attached to the finger hole portion 8, the removal piece 41 is pushed out toward the can lid 1 after pulling up the pulling 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 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 the present example, 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 where 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, tabs and can lids are manufactured at high speed in a line, and when the detachable piece 41 is attached to the tab body 42 on the line, a decrease in manufacturing speed is unavoidable, resulting in a decrease in manufacturing efficiency. However, according to the method of this example, since the removal piece 41 is attached in an offline state, it is sufficient to attach the removal piece 41 to only the can lid 1 that is necessary, which reduces the manufacturing efficiency of the can lid 1 and the tab 40. There is an advantage that can be prevented.

Further, when the detaching piece 41 is attached to the tab 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.

Further, in the tab 40 of this example, the tab body 4
Since the detachable piece 41 is formed in the fingerhole portion 8 by discharging and filling molten resin into the fingerhole portion 8 of No. 2, the inner surface of the fingerhole portion 8 and the upper surface of the can lid 1 and the detachable piece 41 are formed. Can be brought into close contact with each other, and the risk of the removal piece 41 falling during transportation can be reduced.

In the tab 40 of this example, the stamp is formed by pressing after the removal piece 41 is formed. However, the removal material 41 is made to contain a paint in advance, and the removal piece 41 is colored or patterned. May be given, and thereby the removal piece 41 may be specified. further,
For example, it is also possible to identify the removal piece 41 by molding it and then coloring it.

In the method of manufacturing the tab 40 according to the above embodiment, after the tab body 42 is attached to the can lid 1,
Although the detaching piece 41 is attached to the tab body 42, the detaching piece 41 may be attached to the tab body 42 by the above-mentioned means after the can lid 1 is attached to the can body and the product can is manufactured. Good.

[0030]

According to the first aspect of the present invention, in the method for manufacturing a stain tab, after the tab body is attached to the can lid, the molten resin is discharged into the finger hole portion of the tab body to be cured, whereby the inside of the finger hole portion is Since it is configured to form a detachment piece to produce a Steion tab having the detachment piece, only the detachment piece can be collected in a state of being separated from the can lid, and in the Steion type tab, This has the effect of enabling sales promotion.

[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]

 1 Can Lid 8 Finger Hole 40 Steion Tab 41 Removal Piece 42 Tab Body

Claims (1)

[Claims] 1. After attaching the tab body to the can lid, a molten resin is discharged into the finger hole portion of the tab body to be hardened to form a detachable piece in the finger hole portion. A method for producing a steion tab, comprising producing the steion tab having the same.