JP2569757Y2 - Easy opening can lid - Google Patents

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 having a prize-winning chip which can be exchanged for a prize or a prize used for sales promotion of cans by a canned sales company of beverages or the like.

[0002]

2. Description of the Related Art Scores and figures are printed on the broken portion of a can can opening easy-to-beverage can lid, and a specified number or more of the points and figures printed on the broken portion are collected and sent to a beverage canning sales company. Commercial methods are often used to promote the sale of canned beverages, in which the sales company exchanges prizes or prizes or draws lots to give prizes to the winners.

[0003] A conventional easy-to-open beverage can lid 100 as shown in FIG. 14A is provided with a pull tab 102 fixed in a break portion 104 surrounded by a continuous score line 101. Is caused, the score line 101 around the fixing portion 103 is broken, and then the pull tab 102 is pulled up to break the remaining score line 101. When the broken portion 104 is pulled away from the cover plate 105 together with the pull tab 102, Figure 1 with the points and figures printed
As shown in FIG. 4B, only a predetermined number of the broken portions 104 can be collected and mailed to a beverage canning sales company.

[0004] However, if the break portion with the pull tab is separated from the cover plate and discarded in a place other than the trash can, it is difficult to clean and the break portion may cause an unexpected injury. Easy-opening can lid of the type in which the tab is not separated from the lid plate, especially,
An easily openable can lid called "Stay Tab" disclosed in Japanese Patent No. 42544 has begun to be widely used.

[0005] This easy-open can lid has a score line having a discontinuous portion on the lid plate (a score line in which the start end and the end are separated).
The front end is placed near the front end, with the front end placed on this break, and the majority including the rear end placed on the lid plate outside the break The mounting portion, which is surrounded by a C-shaped cut line having an open side, has a tab fixed to the lid plate at a position close to the score line outside the break portion.

[0006] This easy-open can lid causes the score line between the front end of the tab and the mounting portion to break first when the consumer puts a finger under the rear end of the tab and raises the rear end, further causing it. Then, the remaining score line is broken, and the broken portion hangs from the lid plate into the can using the discontinuous portion of the score line as a hinge.

After that, even if the tab is returned to the original position, the broken portion remains hanging, and the tab remains fixed to the lid plate at the mounting portion. Thus, when the can is discarded after the can contents are consumed, the breaks and tabs do not scatter away from the can.

[0008]

However, in the easy-open can lid called "stained tub", since the broken portion does not separate from the cover plate, the beverage canning company prints the score etc. on the broken portion as in the past. In addition, the sales promotion method of giving prizes to consumers who have collected a certain number of points or more has become impossible.

[0009] Because empty cans are very bulky,
Collecting some of this and sending it to the sales company would be expensive, and the sales company would also need to have a very large space for empty cans, which would not be cost-effective.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an easy-open can lid in which a break promotion portion and a tab are not separated from a lid plate and which can carry out a sales promotion method as before.

[0011]

In order to achieve the above object, in the easy opening can lid according to the present invention, a score line having a discontinuous portion is cut and a broken portion is formed in a part of the lid plate. A tab having a front-end pressing portion, a rear-end lifting portion, and an intermediate mounting portion, and having an outer peripheral curl portion on the outer periphery. The tab places the pressing portion on the break portion and raises the lift portion to In the state of being mounted on the outer lid plate, a breakable portion and a tab provided by fixing the mounting portion to the outer lid plate of the breaking portion are not separated from the lid plate. The tab includes a C-shaped notch surrounding the mounting portion and the holding portion side being open, and a concave portion surrounding the mounting portion and continuous with the outer peripheral curl portion. The tip is mounted at approximately the same height or lower than the top surface of the outer curl. And to the configuration provided it is.

The easy-open can lid is attached to the recess with a part thereof being pushed into a cut hole formed in the inclined wall of the recess, or is inserted into a C-shaped notch. It is attached to the depression in a state where it is pushed in, or a part thereof is attached to the depression in a state where it is pushed into the lower surface of a hook provided to protrude inward on an inclined wall of the depression. Is preferred.

The mark on the prize chip may be made of one or more of symbols, letters, numbers, figures, patterns, and colors by ink or paint, or one or more of concave parts and convex parts. A symbol, a character, a numeral, a figure composed of one or more of figures, and the like can be considered.

[0014]

Before the lid plate is opened, the prize chip is mounted in the recess of the tab at substantially the same height as or lower than the upper end surface of the outer curl portion.
It is not illegally removed from the dent and removed or dropped during transportation or transportation.

When the cover plate is opened, a finger is inserted under the lifting portion at the rear end of the tab to raise the lifting portion. Then, the score line is broken by the lever action, and the broken portion hangs down from the lid plate into the can using the discontinuous portion of the score line as a hinge. At this time, the attachment portion is separated from the other portion of the tab by the cut portion, and remains at a position where it is fixed to the lid plate.
After that, even if the tab which is in a substantially vertical state is returned to the original position, the broken portion remains hanging, and the tab remains fixed to the lid plate at the mounting portion.

The tab is substantially vertical until the tab is returned to its original position after opening a part of the lid plate without releasing the tab from the lid plate. On the back side, there is a window equivalent to the size of the mounting part, and there is no obstruction on the back side, so push it with a screwdriver or chopsticks etc. from the back side of the recess, only the prize chip from the recess Can be extruded.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. (Configuration) FIG. 1 is a plan view showing an easy-open can lid according to an embodiment, and FIG.
FIG. 2 is a sectional view taken along line II-II of FIG.

The easy-opening can lid A is composed of a lid plate 1 wound around an upper opening of a can body (not shown) and a tab 2 fixed to the lid plate 1.

The cover plate 1 has a broken portion 11 surrounded by a score line 10 having a discontinuous portion 15 in which the start end and the end are separated, and a reinforcing bead 12 for reinforcing the broken portion 11.
And a fixing rivet 13 formed substantially at the center of the cover plate 1 for fixing the tab 2, and a finger insertion recess 1 formed at a position opposite to the break portion 11 with the fixing rivet 13 interposed therebetween.
4 are provided.

The score line 10 is a double score line composed of an inner score line and an outer score line. Of these, the depth of the outer score line is deeply engraved, and this portion is broken at the time of opening. It has become so.

The tub 2 is formed from a single aluminum alloy plate, has an outer curl portion 20 on the outer periphery, a pressing portion 21 at the front end and a lifting portion 22 at the rear end.
And the intermediate mounting portion 23, the holding portion 21 is placed on the breaking portion 11, and most of the portions including the lifting portion 22 are placed on the lid plate 1 outside the breaking portion 11, Mounting part 23
Is fixed to the fixing rivet 13 of the cover plate 1.
Note that the mounting portion 23 is surrounded by a C-shaped cut line 24 in which the pressing portion 21 side is open, and a slit-shaped cut portion, and the outer score line 10 of the break portion 11 near the pressing portion 21 of the tab. Is located close to

Further, the tab 2 is provided with a central hole 26 surrounded by an inner curl portion 25 which is bent between the lifting portion 22 and the mounting portion 23, as shown in FIGS.
As shown in FIG. 3, a bottom portion 31 surrounding the mounting portion 23 and in close contact with the upper surface of the lid plate 1 when being fixed to the lid plate 1,
And a mortar-shaped depression 30 formed of an inclined wall 32 continuous with the outer curl 20. A rivet hole 33 is formed at the center of the bottom 31 of the recess 30, and the inclined walls 32 on both sides connected to the outer peripheral curl portion 20 with the rivet hole 33 interposed therebetween.
Are formed with circumferentially elongated resection holes 34, 34. Then, as shown in FIG. 5, a mark (star-shaped figure in the figure) 27 is applied to the recess 30 of the tab 2 fixed to the cover plate 1 by the fixing rivet 13 in the mounting portion 23, so that extrusion molding is easy. A prize chip 29 made of resin (in this example, made of polypropylene) is attached to the upper end surface of the outer curl portion 20 in a state where it is pushed into the cutout holes 34, 34.

In this way, unless the consumer puts his / her finger under the lifting portion 22 of the tab 2 and raises the rear end vertically, the prize chip 29 fixed to the depression 30 of the tab 2 is held.
Is not removable.

When eating or using the contents of the can having the easy-opening can lid A, when opening the can 1, the consumer puts a finger under the lifting portion 22 of the tab 2,
When the rear end is raised, the score line 10 between the holding portion 21 of the tab 2 and the attachment portion 23 is broken first by leverage with the holding portion 21 of the tab 2 as a fulcrum and the vicinity of the attachment portion 23 as an operating point. . Then, using the vicinity of the mounting portion 23 of the tab 2 as a fulcrum,
Since the remaining score line 10 is broken by the leverage with the pressing portion 21 as the point of action, and the pressing force from the pressing portion 21 continues to act on the broken portion 11, the broken portion 11 has the score line 1
The discontinuous portion 15 of 0 is hung from the cover plate 1 into the can as a hinge portion.

After removing the prize chip 29 from the tab 2 (the removing operation will be described later), even if the tab 2 which is in a substantially vertical state is returned to the original position, the broken portion 11 remains hanging, 2 is fixed to the cover plate 1 by the fixing rivet 13 at the mounting portion 23.

(Removal Operation of Prize Chip 29) As shown in FIG. 6, when the tab 2 is raised to be substantially perpendicular to the cover plate 1 due to the opening, the prize chip 29 is lifted.
A window 35 having a size corresponding to the mounting portion 23 is formed on the back surface of the recess 30 to which is fixed, and there is no obstruction on the back surface. A strong pressing force can be applied to the surface of the hole 29 by using a screwdriver or chopsticks, etc., and the portion fixed by being pushed into the cut holes 34, 34 is pushed out. Can be extruded in any direction. Then, the required number of prize chips 29 can be put in an envelope as it is or pasted on an application paper or the like with a tape or the like, and sent to a sales company or the like by mail.

(Manufacturing Method) The easy-opening can lid A of the embodiment is manufactured, for example, by the following method. The tab 2 is manufactured by incorporating a molding die for forming the cutout hole 34 formed in the recess 30 into a transfer press process as disclosed in, for example, Japanese Patent Application Laid-Open No. Sho 60-23145 or Japanese Patent Publication No. 64-9227. Is done.

After manufacturing the tab 2 having the recessed portion 30 provided with the cutout hole 34, the tab 2 is fixed to the cover plate 1 with the fixing rivet 13 in the mounting portion 23 in advance.

The prize chip 29 made of resin, which is easily extruded and removed, is manufactured by injection molding, compression molding or the like separately from the manufacture of the tab 2.

As a method of mounting the prize tip 29 in the recess 30, for example, the prize tip 29 is manufactured in advance as a molded article substantially matching the size of the recess 30 of the tab 2, and then the tab 2 is mounted. The molded product is placed in the recessed portion 30 and heated until it is pushed into the cutout holes 34, 34, and the upper surface of the molded product is pressed or the molten thermoplastic molding material is A method of dropping directly into the recess 30 and cooling and fixing it while pressing and squeezing it with punches or the like until it is pushed into the cutout holes 34, 34 or the C-shaped cutting line 24 and fixing it to the recess 30.

If the mechanical engagement between the cutout holes 34, 34 or the C-shaped cut line 24 and the resin pushed therein is weak, the prize may be lost during transportation or transportation. Since the chip 29 falls off from the depression 30, the depression 30
The bonding strength between the surface of
It is desired that it is large enough not to affect the openability.

In such a case, a tab material obtained by coating a modified polyolefin such as a carboxyl group-modified polyolefin, a polyethylene oxide, or an ionomer graft-modified with an unsaturated carboxylic acid or a derivative thereof on a thermosetting resin coating film. And / or a cover plate, and a modified polyolefin coated as a resin forming the prize tip 29 and a resin having good heat adhesion (for example, when modified polyethylene is coated on a tab material, polyethylene, modified polyethylene, Alternatively, a prize chip is formed from a mixture thereof). The modified polyolefin is obtained by dispersing the powder in a thermosetting resin solution,
You may paint directly on the surface of a tab material or a cover plate.

In the case where the mark 27 is formed on the prize chip 29 by forming a concave portion or a convex portion, or by printing or painting, the prize chip 29 is heated into the concave portion 30 and a concave portion is formed on a pressing surface of a heating plate to be pressed and formed. After the prize chip 29 is fixed to the recess 30, press molding or printing or painting is performed by a jet printer.

In the case where the molten thermoplastic molding material is directly dropped into the recess 30 of the tab, the shape of the recess 30 is transferred to the prize tip 29, and this shape is used as a substitute for a mark. You can do it.

As described above, the easy opening can lid A of the embodiment has the following effects.

A) Cutting holes 34, 34 formed in the inclined wall 32 of the recess 30 of the tab 2 (in this example, the fixing rivets 13
, The prize-winning tip 29 which is easily pushed out and removed is mounted in a pushed state, so that the opening 11 is of a type in which the broken portion 11 and the tab 2 are not separated from the lid plate 1. Although it is an easy can lid A, it is possible to apply to a sales company or the like in order to push out and remove only the prize chip 29 with the mark 27 from the recessed portion 30 to obtain a prize.

That is, when the can is discarded after the contents of the can are consumed, the breakable portion 11 and the tab 2 are not separated from the can and scattered without impairing the usefulness of the stay-on tub. A sales promotion method of giving a prize to a consumer who collects a certain number or more of the marks 27 applied to the can lid A by a canning sales company or the like can be conventionally performed.

(B) Since the prize chip 29 is mounted at the same height as the upper end face of the outer curl portion 20, the prize chip 29 is illegally removed during display at the store. It does not fall out of the recess 30 during transportation or transportation.

C) Further, since the prize chip 29 is manufactured separately from the lid plate 1 and the tab 2 which have many processing steps,
Uses almost the same mold as the tab fixed to the easy-open can lid which is not used for sales promotion, and the cover plate 1 can be manufactured using the same mold and in the same processing step. It is made of resin and can be mass-produced by a simple molding means such as injection molding, or after directly injecting or dripping the molten material into the recess 30 of the tab fixed to the cover plate 1. As a result of being able to be molded, the production costs are not too high.

D) Further, since the recess 30 is arranged at the center of the cover plate 1, the prize tip 29 can be removed from the recess 3.
At the time of attachment to the tab 0, complicated means for aligning the directions of the tabs 2 becomes unnecessary, and the device for attachment can be simplified.

Although the embodiment of the present invention has been described with reference to the drawings, the specific configuration is not limited to this embodiment. For example, a mark 27 applied to the prize chip 29
Is not limited to the shape due to the uneven shape at the time of molding, but may be a shape based on ink or paint, a color tone of a resin itself or a resin mixed with a colorant, or a combination of two or more thereof. In the case of, it consists of one or more of symbols, letters, numbers, figures, patterns, patterns and colors, and in the case of a mark with a concave or convex part, it consists of one or more of symbols, letters, numbers, and figures good.

The molding material of the prize chip 29 of the present invention is mainly composed of one or a mixture of two or more selected from the group of the following thermoplastic resins, hot melt-based materials, and wax materials. And the like can be appropriately mixed and used. Examples of the thermoplastic resins, polyester, polypropylene, polybutenyl den -1,
Polymethylpentene-1, polyacetal, polyethylene terephthalate, polybutylene terephthalate, nylon, fluororesin, polyvinyl chloride, polyvinylidene chloride, polystyrene, ABS resin, acrylic resin, cellulose resin, polycarbonate, phenoxy resin, polyphenylene oxide, polysulfone, Ionomer,
Styrene butadiene, thermoplastic elastomers and the like can be mentioned.

The hot-melt material is a thermoplastic resin-based material comprising a tackifier, a wax and the like. The base polymer is ethylene-vinyl acetate copolymer (EVA), polypropylene, atactic polypropylene, polyethylene or the like. , et Ji Ren ethyl acrylate copolymer resin (EEA), polyamide resins, polyester resins, styrene-isoprene block copolymer (SI
S) , styrene-butadiene block polymer (SB
S) and the like.

Examples of the tackifier include rosin-based resins, terpene-based resins, coumarone - indene resins, and petroleum resins. Examples of the wax include natural waxes such as paraffin wax and microcrystalline wax, and synthetic waxes such as polyethylene wax. Wax and the like.

As the wax used alone or as a mixture, those described above can be mentioned.

In addition, a heat-resistant molding material is used for a can lid for canned retort which is sterilized at 100 ° C. or higher. In the case of this example, the shape of the prize chip 29 is a prize mark 27.
In order to be able to give large, it is made almost the same round plate shape according to the recessed part 30, but it is not limited to this. If the mark can be small, the fixing rivet 13 is removed as shown in FIG. An annular shape may be used.
May be square if the shape is square, and the depression 30
Is appropriately determined depending on the shape of.

Further, as a method for mounting the prize chip 29 in the recessed portion 30, cutout holes 34, 34 formed for mounting the resin prize chip 29 as in this embodiment are provided in the inclined wall 32. Instead, as shown in FIGS. 8 to 10, a C-shaped notch 24 ′ which is formed from the bottom 31 of the depression 30 to the inclined wall 32 and is wider than the present embodiment is provided. As shown in the figure, the prize chip 29 may be fixed between the outer edge lower surface 24'a and the inner edge upper surface 24'b of the C-shaped cut portion 24 'so as to be pushed in, or a resin or wax having good fluidity may be used. In this case, a part may flow down to the C-shaped cut line 24 of the present example, and may be solidified in a state where it penetrates to the back side of the tab 2.

Alternatively, as another example, FIG.
As shown in FIGS. 1 to 13, hook portions 37 projecting from the inclined wall 32 in the horizontal direction are provided at two positions (or three positions surrounding the rivet 13) on the inclined wall 32 facing the rivet hole 33. , The prize tip 29 is attached to the hook 3
7 may be pushed into engagement with the lower surface and fixed.

The manufacturing method includes, for example, the tab 2
In the transfer press process similar to that of the above-described embodiment, a cut 36 extending from the C-shaped cut portion 24 to the inclined wall 32 is formed, and when the recess 30 is formed, a gap between the cuts 36, 36 is formed. If the portion is not deeply formed, a gap 38 is formed, and a hooking portion 37 in which a substantially rectangular thin plate protrudes in the horizontal direction is provided on the inclined wall 32. Then, after the tab 2 is fixed to the cover plate 1 in the mounting portion 23, the concave portion 3 is formed.
The prize chip 29 is placed at 0 and the lower part of the prize chip 29 ′ is pushed into the gap 38 on the lower surface of the hanging portion 37 by press molding, injection molding or the like, and the prize chip 29 ′ is recessed.
To be mounted on

[0050]

According to the present invention, a recess which surrounds a mounting portion of a tab is provided in an easy-opening can lid called a stay-on tab, in which a broken portion and a tab are not separated from a cover plate even after opening. Since the dent portion is equipped with a prize tip that is easily extruded and removed, the usefulness that the broken portion and the tab are not scattered away from the can when the can is discarded after consuming the contents of the can. While the prize chip is pushed out and removed to obtain a prize or the like, an effect of being able to apply for a sales company or the like can be obtained.

Further, by disposing the recess at the center of the cover plate, it is not necessary to use a complicated means for aligning the direction of the tab when mounting the prize chip in the recess, so that the mounting device is simplified. Can be

[Brief description of the drawings]

FIG. 1 is a plan view showing an easy opening can lid according to an embodiment.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a plan view showing a tab fixed to the easy opening can lid of the embodiment.

FIG. 4 is a sectional view taken along line IV-IV in FIG. 3;

FIG. 5 is a sectional view taken along line VV of FIG. 1;

FIG. 6 is an explanatory view showing an operation of removing a prize chip.

FIG. 7 is a plan view showing a modification of the easy opening can lid.

FIG. 8 is a plan view showing a modified example of a tab.

9 is a sectional view taken along line IX-IX of FIG.

FIG. 10 is a sectional view showing a state in which a prize tip is mounted on the tab.

FIG. 11 is a plan view showing a modified example of a tab.

FIG. 12 is a sectional view taken along line XII-XII of FIG. 11;

FIG. 13 is a cross-sectional view showing a state where a prize tip is mounted on the tab.

14A is a plan view showing a conventional pull-tab type easy opening can lid, and FIG. 14B is a plan view showing a broken portion of the conventional pull tab type easy opening can lid.

Claims (6)

(57) [Scope of request for utility model registration] 1. A cut line is formed in a part of a cover plate by engraving a score line having a discontinuous portion, the cover plate includes a pressing portion at a front end, a lifting portion at a rear end, and an intermediate mounting portion. The tab having the outer peripheral curl portion, the holding portion is placed on the break portion, and the lifting portion is placed on the lid plate outside the break portion, the mounting portion is outside the break portion. In the easy opening can lid of a type in which the break portion and the tab fixed to the lid plate are not separated from the lid plate, the tab surrounds the mounting portion and the holding portion side is open.
A cut portion surrounding the attachment portion and a concave portion continuous with the outer peripheral curl portion, wherein the prize tip has a height substantially equal to or higher than the upper end surface of the outer curl portion. An easy opening can lid with a prize tip, which is mounted lower than the lower end. 2. The easy-open can lid according to claim 1, wherein the prize-winning chip is attached to the recess while a part thereof is pushed into a cut hole formed in an inclined wall of the recess. 3. The easy opening can lid according to claim 1, wherein the prize-winning chip is partially mounted in the concave portion while being pushed into the C-shaped cut portion. 4. The prize chip is mounted in the recess while a part of the prize chip is pushed into a lower surface of a hook provided to protrude inward on an inclined wall of the recess. Easy opening can lid. 5. The easy opening according to claim 1, wherein the prize tip is provided with a mark, and the mark is formed of one or more of a symbol, a character, a number, a figure, a pattern, and a color tone by ink or paint. Can lid. 6. The prize chip is provided with a mark, and the mark comprises at least one of a symbol, a character, a numeral, and a figure formed by at least one of the concave portion and the convex portion. 1
The easy opening can lid according to the description.