JPH0562429U - Easy opening can lid - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an easy-to-open can lid that can carry out the sales promotion method as in the past even for the easy-to-open can lid of the type in which the breaking portion and the tab are not separated from the lid plate. [Structure] A scored line 10 having a discontinuous portion 15 is engraved to form a broken portion 11 in a part of the lid plate 1, and a holding portion 21 at a front end, a lifting portion 22 at a rear end, and an intermediate mounting portion 23 are formed. And the tab 2 having the outer peripheral curl portion 20 on the outer periphery,
Is mounted on the breaking portion 11 and the lifting portion 22 is mounted on the lid plate 1 outside the breaking portion 11, and the mounting portion 23 is fixed to the lid plate 1 outside the breaking portion 11. In the opening easy can lid A provided, the tab 2 surrounds the attachment portion 23, surrounds the C-shaped notch portion 24 with the holding portion 21 side open, and the attachment portion 23. 20 and a recessed portion 30 which is continuous with each other, and a prize chip 29 having a mark 27 is attached to the recessed portion 30 at substantially the same height as the upper end surface of the outer peripheral curl portion 20.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an easy-open can lid that has a prize chip that can be exchanged for prizes or prizes used by canned drinks selling companies to promote the sales of canned goods.

[0002]

[Prior Art]

 Easy opening of canned beverages.Scores and figures are printed on the ruptured part of the can lid, and a certain number or more of the number of points and figures printed on the ruptured part are collected and sent to the beverage canning sales company. Commercial methods are often used to promote the sale of canned beverages in which the prize money and prizes are exchanged for prizes or prizes are given to the winners.

A conventionally used easy opening can lid 100 for beverages as shown in FIG. 14 (A) is a pull tab fixed in a breaking portion 104 surrounded by a continuous score line 101. When the score line 101 around the fixing portion 103 is broken by causing 102, and then the pull tab 102 is pulled up to break the remaining score line 101, the breaking portion 104 is separated from the lid plate 105 together with the pull tab 102. The consumer can collect a certain number of broken portions 104, as shown in FIG. 14 (B), on which points and figures are printed, and mail them to a beverage can sales company.

However, if the breaking portion with the pull tab is separated from the lid plate and is thrown to a place other than the trash can, it is difficult to clean, and the breaking portion may cause an unexpected injury. Also, an easily opened can lid of a type in which the tab is not separated from the lid plate, in particular, an easily opened can lid called "Steion tab" disclosed in Japanese Patent Publication No. 57-42544 has begun to be widely adopted.

This easy-to-open can lid has a break portion surrounded by a score line (a score line having a start end and an end end separated from each other) having a discontinuous portion on the cover plate, and on the break portion. It is located near the front end with the front end placed, and most of it, including the rear end, placed on the lid plate outside the break, and is surrounded by a C-shaped cut line that is open on the front end side. The attachment part has a tab fixed to the lid plate at a position close to the score line outside the fractured part.

This easy-to-open can lid further causes the score line between the front end of the tab and the attachment to break first when the consumer puts his or her finger under the rear end of the tab to cause the rear end. And the remaining score line breaks, and the broken part hangs down from the lid plate into the can with the discontinuity of the score line as the hinge part.

After that, even when the tab is returned to its original position, the fractured part remains hung and the tab remains fixed to the lid plate at the attachment part. Therefore, when the can is discarded after the can contents have been consumed, the breaks and tabs do not scatter away from the can.

[0008]

[Problems to be solved by the device]

 However, since the breakage part of the easy-open can lid called the Stein tab does not separate from the lid plate, the beverage can sales company can print the score etc. on the breakage part as in the past, and keep the fixed number of points. The sales promotion law of giving prizes to the collected consumers is no longer valid.

[0009] Because empty cans are very bulky, it is expensive to collect some of them and send them to the sales company, and the sales company also needs to make the space for the empty cans very large. This is because it is not suitable for cost.

It is an object of the present invention to provide an easy-to-open can lid that can carry out a sales promotion method as in the past even in the case of the easy-to-open can lid whose breakage part and tab are not separated from the lid plate. And

[0011]

In order to achieve the above object, in the easy opening can lid of the present invention, a scoring line having a discontinuous portion is engraved to form a rupture portion in a part of the lid plate. A tab having a holding portion at the front end, a lifting portion at the rear end, and an attachment portion in the middle, and having an outer peripheral curl portion on the outer circumference, places the holding portion on the breaking portion, and lifts the lifting portion at the breaking portion. In the case of an easy-to-open can lid of the type in which the attachment part is fixed to the lid plate outside the rupture portion and the rupture portion and the tab are not separated from the lid plate when placed on the outer lid plate of the The tab includes a C-shaped cut portion that surrounds the attachment portion and is open on the side of the holding portion, and a recess portion that surrounds the attachment portion and that is continuous with the outer peripheral curl portion. The prize chip should be at approximately the same height as the top surface of the outer curl or Ku and to the configuration provided is mounted.

[0012] In addition, this easy opening can lid is attached to the recessed portion in a state that a part thereof is pushed into a cut hole formed in the inclined wall of the recessed portion, or a C-shaped cut portion is formed. It is installed in the recessed part in the pushed state, or a part of it is installed in the recessed part while being pushed into the lower surface of the hanging part provided to project inward on the inclined wall of the recessed part. Is preferably provided.

The mark on the prize chip is made up of one or more of symbols, letters, numbers, figures, patterns, and color tones by ink or paint, and one or more of concave and convex portions. It can be a symbol, a letter, a number, or one or more of the figures formed above.

[0014]

[Action]

 Before opening the lid plate, the prize chip is installed in the recess of the tab at the same height as or lower than the upper end surface of the outer peripheral curl, so the prize chip is illegally inserted from the recess. Do not remove, remove, or drop during transportation or transportation.

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

Then, the tab is in a substantially vertical state until the tab is returned to the original position after the tab is partially opened while the tab is not cut off from the lid plate, and the tab is in the recessed state. Since there is a window on the back side of the part that corresponds to the size of the mounting part, and there is no obstacle on the back side, press the screwdriver or chopsticks etc. from the back side of the recess to win a prize. Only the tip can be extruded.

[0017]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. (Structure) FIG. 1 is a plan view showing an easy opening can lid of the embodiment, and FIG. 2 is a sectional view taken along line II-II of FIG.

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

The cover plate 1 has a fractured portion 11 surrounded by a score line 10 having a discontinuous portion 15 having a starting end and a terminating end spaced apart from each other, a reinforcing bead 12 that reinforces the fractured portion 11, and a tag. A fixing rivet 13 formed at a substantially central position of the lid plate 1 for fixing the hook 2 and a finger insertion concave portion 14 formed at a position opposite to the breaking portion 11 with the fixing rivet 13 interposed therebetween are provided. There is.

The score line 10 is a double score line consisting of an inner score line and an outer score line. Of these, the depth of the outer score line is deeply engraved, and this part is broken when opened. It is supposed to be done.

The tab 2 is formed from a single aluminum alloy plate, has an outer curl portion 20 on the outer circumference, and has a holding portion 21 at the front end, a lifting portion 22 at the rear end, and a mounting portion between the middle portions. In the state where the holding portion 21 is placed on the breaking portion 11 and most of the lifting portion 22 is placed on the lid plate 1 outside the breaking portion 11, at the mounting portion 23. It is fixed to the fixing rivet 13 of the cover plate 1. The attachment portion 23 is surrounded by a C-shaped cut line 24 slit-shaped cut portion, which is open on the holding portion 21 side, and the outer score line 10 of the breaking portion 11 near the holding portion 21 of the tab. It is located close to.

Further, the tab 2 is provided with a central hole portion 26 surrounded by an inner peripheral curl portion 25 which is bent between the lifting portion 22 and the mounting portion 23, and also, as shown in FIGS. As shown in FIG. 2, a mortar-shaped mortar having a bottom portion 31 that surrounds the mounting portion 23 and is in close contact with the upper surface of the lid plate 1 when fixed to the lid plate 1, and an inclined wall 32 that continues from the bottom portion 31 to the outer peripheral curl portion 20. The depression 30 is provided. A rivet hole 33 is formed in the center of the bottom portion 31 of the hollow portion 30, and elongated inclined cutting holes 34, 34 are formed in the circumferential direction on both side slanted walls 32 which are connected to the outer peripheral curl portion 20 with the rivet hole 33 interposed therebetween. It is set up. Then, as shown in FIG. 5, a mark (a star-shaped figure in the figure) 27 is provided on the recessed portion 30 of the tab 2 fixed to the lid plate 1 by the fixing rivet 13 in the mounting portion 23, which facilitates the extrusion molding. The prize tip 29 made of resin (in this example, polypropylene) is attached to the upper end surface of the outer peripheral curl portion 20 while adjusting the height thereof while being pushed into the cut 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 tip 29 fixed to the recess 30 of the tab 2 is removed. I'm trying not to remove it.

When eating or using the contents of the can having the easy-open can lid A, when the lid plate 1 is opened, the consumer puts his / her finger under the lifting portion 22 of the tab 2 to set the rear end. When raised, the score line 10 between the holding portion 21 and the mounting portion 23 of the tab 2 breaks first due to the lever action with the holding portion 21 of the tab 2 as a fulcrum and the vicinity of the mounting portion 23 as the point of action. .. After that, the remaining score line 10 is broken by the lever action with the pressing portion 21 as the point of action with the vicinity of the mounting portion 23 of the tab 2 as a fulcrum, and the pressing force from the pressing portion 21 continues to act on the breaking portion 11. The breaking portion 11 hangs down from the lid plate 1 into the can using the discontinuous portion 15 of the score line 10 as a hinge portion.

After removing the prize chip 29 from the tab 2 (removal operation will be described later), even if the tab 2 which is in a substantially vertical state is returned to its original position, the broken portion 11 still hangs down. The tab 2 is still 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 up to the lid plate 1 due to the opening, the prize chip 29 is fixed. A window 35 having a size corresponding to the mounting portion 23 is formed on the back surface of the recessed portion 30, and since there is no obstruction on the back surface side, the surface of the prize chip 29 is viewed from the back surface side of the recessed portion 30. You can use a screwdriver, chopsticks, etc. to apply a strong pressing force to it, and the part that is fixed by being pushed into the excision holes 34, 34 will be pushed out. It can be removed by extrusion. Then, the required number of prize chips 29 can be put in the envelope as they are, or can be attached to the application form with tape or the like, and can be sent to the sales company or the like by mail.

(Manufacturing Method) The easy-open can lid A of the embodiment is manufactured by the following method, for example. For the tab 2, for example, as disclosed in Japanese Patent Laid-Open No. 60-23145 or Japanese Patent Publication No. 64-9272, a molding die for the cut hole 34 formed in the recess 30 is incorporated in the transfer press process. Manufactured.

After the tab 2 having the recess 30 having the cutout hole 34 formed therein is manufactured, the tab 2 is previously fixed to the cover plate 1 by the fixing rivet 13 at the mounting portion 23.

The prize tip 29 made of resin, which can be easily removed by extrusion, is manufactured by extrusion molding, compression molding, or the like, separately from the manufacturing of the tab 2.

As a method of mounting the prize chip 29 in the hollow portion 30, for example, the prize chip 29 is manufactured in advance as a molded product which is substantially matched to the size of the hollow portion 30 of the tab 2, and then the tab 2 is formed. The molded product is placed in the recess 30 of the mold, and the molded product is heated until it is pressed into the cutout holes 34, 34, and the upper surface of the molded product is pressed, or a molten thermoplastic molding material is formed into a tab. It is possible to directly drip into the recessed portion 30 of the No. 2 and then fix it by cooling while pressing it with a punch or the like until it is pressed into the cutout holes 34, 34 or the C-shaped cut line 24 and fixed to the recessed portion 30. ..

When the mechanical engagement between the cut holes 34, 34 or the C-shaped cut line 24 and the resin pressed therein is weak, a prize is given during transportation or transportation. Since the chip 29 drops off from the recess 30, it is desired that the adhesive strength between the surface of the recess 30 and the surface of the prize chip 29 is large enough not to affect the can openability.

In that case, a tab prepared by coating a thermosetting resin coating with a modified polyolefin such as a carboxyl group-modified polyolefin grafted with an unsaturated carboxylic acid or a derivative thereof, polyethylene oxide, or an ionomer is used. Material and / or lid plate, and modified polyolefin that has been applied as a resin to form the prize chip 29 and a resin with good thermal adhesion (for example, when modified polyethylene is applied to a tab material, polyethylene or Modified polyethylene or a mixture thereof is used to form prize chips). The modified polyolefin may be applied to the surface of the tab material or the cover plate by directly dispersing the powder in a thermosetting resin solution.

When the mark 27 is formed on the prize chip 29 by molding a concave portion or a convex part, or by printing or painting, the prize chip 29 is heated in the depression 30 and is pressed on the pressing surface of the heating plate. A concave portion or a convex portion is provided, or the prize chip 29 is fixed to the concave portion 30 and then press molding, or printing or painting is performed by a jet printer.

When the molten thermoplastic molding material is dropped directly into the recess 30 of the tab, the shape of the recess 30 is transferred to the prize chip 29, so this shape is used as a substitute. You can also say

As described above, in the easily opened can lid A of the embodiment, the following effects can be obtained.

B) Excavation holes 34, 34 formed in the inclined wall 32 of the recessed portion 30 of the tab 2 (in this example, two positions sandwiching the fixing rivet 13) are marked, and are easily extruded and used for a prize. Since the tip 29 is mounted in a pushed-in state, only the prize tip 29 with the mark 27 is applied, even though it is the easy opening can lid A of the type in which the breakage part 11 and the tab 2 are not separated from the lid plate 1. It is possible to apply to a sales company or the like in order to extrude and remove from the dent portion 30 to obtain a prize or the like.

That is, when the can is discarded after the can contents are consumed, the breakage portion 11 and the tab 2 do not scatter away from the can, without impairing the usefulness of the Steion tab, and the beverage. The sales promotion method of giving a prize to a consumer who collects a certain number or more of the marks 27 on the can lid A can be carried out as usual by a canned sales company.

(B) Since the prize chip 29 is attached to the tab 2 at substantially the same height as the upper end surface of the outer peripheral curl portion 20, the prize chip 29 is illicitly removed during the store display. In addition, it does not fall off from the recessed portion 30 during transportation or transportation.

Further, since the prize chip 29 is manufactured separately from the lid plate 1 and the tab 2 which are often processed, the tab 2 is almost the same as the tab fixed to the easy-to-open can lid which is not for sales promotion. , And the lid plate 1 can be manufactured in the same processing step using the same mold. On the other hand, the prize chip 29 is made of resin and can be manufactured by a simple molding means such as injection molding. It can be manufactured in a large amount, or can be formed by directly injecting or dropping the molten material into the recess 30 of the tab after being fixed to the lid plate 1, resulting in a high production cost. There is no such thing.

Further, since the recess 30 is arranged in the center of the lid plate 1, when the prize chip 29 is mounted in the recess 30, no complicated means for aligning the directions of the tabs 2 is required. Therefore, the device for mounting can be simplified.

Although the embodiment of the present invention has been described above with reference to the drawings, the specific configuration is not limited to this embodiment. For example, the mark 27 applied to the prize chip 29 is not limited to the uneven shape at the time of molding, but may be ink or paint, the resin itself or the color tone of the colorant-mixed resin, and further It may be a combination of two or more. In the case of marking with ink or paint, it consists of one or more of symbols, letters, numbers, figures, patterns, and color tones, and in the case of marking with concave or convex portions, symbols and characters. , Numbers, and figures must be one or more.

The molding material of the prize chip 29 of the present invention is mainly composed of one or a mixture of two or more kinds selected from the group of the following thermoplastic resins, hot-melt materials and wax materials, and is colored with this. Additives such as agents can be appropriately mixed and used. Examples of the thermoplastic resin are polyester, polypropylene, polyproden-1, polymethylpentene-1, polyacetal, polyethylene terephthalate, polybutylene terephthalate, nylon, fluororesin, polyvinyl chloride, polyvinylidene chloride, polystyrene, ABS resin, Examples thereof include acrylic resins, cellulosic resins, polycarbonates, phenoxy resins, polyphenylene oxides, polysulfones, ionomers, styrene butadienes, and thermoplastic elastomers.

The hot-melt material is based on a thermoplastic resin and is composed of a tackifier, wax and the like. As the base polymer, ethylene vinyl acetate copolymer (EVA), polypropylene, atactic polypropylene, Polyethylene, ethylene ethyl acrylate, atactic polypropylene, ethylene ethyl acrylate copolymer resin (EEA), polyamide resin, polyester resin, styrene / isoprene block polymer (SIS), styrene / butadiene block polymer (SBS), etc. ..

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

Examples of the wax used alone or as a mixture include those described above.

A heat-resistant molding material is used for the can lid for retort canning that is sterilized at 100 ° C. or higher. Further, in the case of the present example, the shape of the prize tip 29 is almost the same as the round plate shape so as to give the prize mark 27 large, but the shape is not limited to this. If the mark is small, it may be formed in an annular shape excluding the fixing rivet 13 as shown in FIG. 7, and if the shape of the recessed portion 30 is square, it may be squared. It is appropriately determined depending on the shape of 30.

Further, as a method of mounting the prize chip 29 in the recess 30, the cut walls 34, 34 formed for mounting the resin prize chip 29 as in this embodiment are provided in the inclined wall 32. 8 to 10, a C-shaped cutout portion 24 'that is formed from the bottom portion 31 of the hollow portion 30 to the inclined wall 32 and has a width wider than that of the present embodiment is provided. As shown in FIG. 7, the prize tip 29 may be fixed so as to be pushed between the outer edge lower surface 24'a and the inner edge upper surface 24'b of the C-shaped cut portion 24 ', or a resin having good fluidity. In the case of wax or wax, a part of the wax may be made to flow down to the C-shaped cut line 24 of this example, and may be solidified while penetrating to the back surface side of the tab 2.

Alternatively, as another example, as shown in FIGS. 11 to 13, the inclined walls 32 facing each other with the rivet hole 33 interposed therebetween are inclined at two positions (or three positions surrounding the rivet 13). It is also possible to provide a hanging portion 37 projecting from the wall 32 in the horizontal direction, and push the prize tip 29 into the lower surface of the hanging portion 37 so that the prize tip 29 is fixed.

As this manufacturing method, for example, the tab 2 is formed with a cut 36 extending from the C-shaped cut portion 24 to the inclined wall 32 in the transfer press step similar to the above-described embodiment, and the recess portion is formed. If the portion between the cuts 36 and 36 is not deeply formed when forming 30, the gap 38 is formed and the slant wall 32 is provided with the hanging portion 37 in which a substantially rectangular thin plate is projected in the horizontal direction. .. Then, after the tab 2 is fixed to the cover plate 1 at the mounting portion 23, the prize tip 29 is placed in the recess 30 and the lower portion of the prize tip 29 'is hung by press molding or extrusion molding. The prize tip 29 ′ is inserted into the gap 38 on the lower surface of 37 and mounted on the recess 30 to be provided.

[0050]

[Effect of the device]

 According to the present invention, in the easy-open can lid of the type called the Stein tab, in which the breakage portion and the tab are not separated from the lid plate even after the opening, the hollow portion surrounding the mounting portion of the tab is provided. In addition, since the prize chip that is easy to extrude and remove is attached, while maintaining the usefulness that the breaks and tabs do not separate from the can when the can contents are consumed and the can is discarded. The effect is that you can apply to a sales company etc. to push out and remove prize chips and win prizes.

Further, by disposing the recessed portion in the center of the lid plate, when mounting the prize chip in the recessed portion, a complicated means for aligning the directions of the tabs is not required, so that the mounting device can be mounted. Can be simplified.

[Brief description of drawings]

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

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

FIG. 3 is a plan view showing tabs attached to the easy-open can lid of the embodiment.

4 is a sectional view taken along line IV-IV of FIG.

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

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

FIG. 7 is a plan view showing a modified example of the easy-open can lid.

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

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

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

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

12 is a sectional view taken along line XII-XII in FIG.

FIG. 13 is a cross-sectional view showing a state where a prize chip is attached to the tab.

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lid plate 2 Tab 10 Score line 11 Breaking part 15 Discontinuous part 20 Outer peripheral curl part 21 Holding part 22 Lifting part 23 Mounting part 24 Notch part 27 Mark 29 Prize tip 30 Recessed part 32 Inclined wall 34 Cutting hole 37 Hanging part

Claims (6)

[Scope of utility model registration request] 1. A breaking portion is formed in a part of a lid plate by engraving a score line having a discontinuous portion, and comprises a holding portion at a front end, a lifting portion at a rear end, and an intermediate mounting portion, and an outer circumference. In the tab provided with the outer peripheral curl portion, the holding portion is placed on the breaking portion, and the mounting portion is placed on the outer side of the breaking portion while the lifting portion is placed on the lid plate outside the breaking portion. In an easy opening can lid of a type in which a breakage portion and a tab fixedly provided on a lid plate are not separated from the lid plate, the tab surrounds the attachment portion and the holding portion side is open C
It is provided with a V-shaped notch and a recess that surrounds the attachment and is continuous with the outer peripheral curl, and the prize tip has a height substantially equal to or higher than the upper end surface of the outer peripheral curl. An easy opening can lid with a tip for prizes, which is installed lower than the above. 2. The easy opening can lid according to claim 1, wherein the prize tip is mounted in the hollow portion in a state where a part of the tip is pushed into a cutout hole formed in the inclined wall of the hollow portion. 3. The easy opening can lid according to claim 1, wherein the prize tip is mounted in the recessed portion in a state in which a part of the tip is pushed into the C-shaped notch. 4. The prize chip is mounted in the recessed part in a state in which a part thereof is pushed into a lower surface of a hanging part provided so as to project inward on the inclined wall of the recessed part. Easy opening of the can lid. 5. The easy opening according to claim 1, wherein the prize chip is provided with a mark, and the mark is made of one or more of symbols, letters, numbers, figures, patterns and color tones 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 letter, a number and a figure formed by at least one of a concave portion and a convex portion. 1
Easy opening can lid described.