JPH0627552U - Easy opening can lid - Google Patents

Abstract

(57) [Summary] [Purpose] In the easy-open can lid of the type in which the breakage part and the tab are not separated from the lid plate, the conventional sales promotion method can be performed and the prize chip used for this promotion. Should be prevented from falling into the can when the tab is triggered or the chip is removed. [Structure] The tab 2 has a C-shaped cut portion 24 that surrounds the attachment portion 23 and is open on the side of the holding portion 21, and a recess portion 30 that surrounds the attachment portion 23 and that is located substantially in the center of the lid plate 1. Prepare,
At least most of the notch portion 24 on the lifting portion 22 side is
It is provided in the upper end portion of the recessed portion 30 and in the recessed portion 30,
The prize tip 29 is mounted at substantially the same height as the upper end surface of the recess 30, and is separated from the recess 30 when the tab 2 is raised and left on the mounting portion 23 side.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an easy-opening 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 beverage canned goods If you print a score or figure on the breakage part of the can lid and collect a certain number or more of the points or figures printed on the breakage part and send it to the beverage canning sales company, that sales company Commercial methods are often used to promote the sale of canned beverages in which the prizes and prizes are given to the winners in exchange for prizes or prizes.

A conventional open easy can lid 100 for beverage as shown in FIG. 8 (A) is a platter fixed in a breaking portion 104 surrounded by a continuous score line 101. 102 to break the score line 101 around the fixing portion 103, and then pull up the pull tab 102 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 only the broken portions 104 shown in FIG. 8 (B), on which points or figures are printed, and mail them to a company selling canned drinks.

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 easy opening can lid of a type in which the tab is not separated from the lid plate, in particular, an easy opening 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. With the front end placed and most of the rear end placed on the lid plate outside the rupture, it is located near the front end and is surrounded by a substantially C-shaped notch with the front end open. The attachment part has a tab fixed to the cover plate at a position close to the score line outside the break.

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

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 are 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 prints the score etc. on the breakage part as before, and collects a certain number of the scores. The sales promotion method of giving prizes to consumers has become impossible.

Because empty cans are very bulky, if you collect several of them and send them to the sales company, the shipping cost will be high, and the sales company will take up a very large space for the empty cans. This is because the cost is not suitable because it is necessary.

The present invention makes it possible to perform a conventional sales promotion method on an easy opening can lid of a type in which the breakage portion and the tab are not separated from the lid plate, and a prize chip used for this promotion. The purpose is to prevent the product from falling into the can during the tab-causing operation or chip removal operation.

[0011]

[Means for Solving the Problems]

 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, and the pressing portion at the front end and the rear end are formed. The tab, which is composed of the lifting part and the intermediate mounting part and has an outer peripheral curl part, mounts the holding part on the breaking part and the lifting part on the lid plate outside the breaking part. In this state, in the opening easy can lid of the type in which the attachment part is fixed to the lid plate outside the fractured part and the fractured part and the tab are not separated from the lid plate, the tab described above is the attachment part. A C-shaped or U-shaped cutout portion that surrounds the holding portion and an opening portion, and a recessed portion that surrounds the attachment portion and is located at approximately the center of the lid plate, and at least lifts the cutout portion. Most of the part side is provided in the upper end part of the recess, and in the recess, The prize chip is mounted so that its upper surface is at the same height as or lower than the upper end surface of the recess, and when the tab is raised, it is detached from the recess and remains on the mounting side. It has been configured.

[0012] For example, the prize chip has a peripheral edge portion that extends toward the back side of the tab through the cut portion and is mounted in the recess portion in a state of being locked with the cut portion.

Further, the prize chip may be provided with a mark, and the mark may be one or more of a symbol, a character, a number, a figure, a pattern, and a tone of ink or paint.

Further, the prize chip is provided with a mark, and the mark is composed of one or more of a symbol, a letter, a number and a figure formed by one or more of the concave portion and the convex portion. May be

[0015]

[Action]

 Before opening the lid plate, the prize chip is mounted in the recess of the tab with the top surface of the chip almost at the same height as or lower than the upper end surface of the recess, so the prize chip is not Do not illegally take out from the department and remove it, or fall off 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, the score line is broken by the lever action, and the broken part hangs down from the lid plate into the can with the discontinuity of the score line serving as a hinge part. 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 which is in a substantially vertical state is returned to its original position, the breaking portion remains hung and the tab remains fixed to the lid plate at the attaching portion.

On the other hand, when the tab is raised (at the time of opening operation), the bottom surface of the recess has a window corresponding to the size of the notch, and the prize chip mounted in the recess is provided with a prize chip. It is not triggered together with the recess and leaves the recess, and most of it remains on the mounting side through this window. Then, while the tab is not separated from the cover plate, the tab is in a substantially vertical state from the time when the cover plate is partially opened until the tab is returned to its original position. It is possible to remove the prize chip with the etc.

[0018]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

First, the configuration will be described.

FIG. 1 is a plan view showing an easy opening can lid of an embodiment. FIG. 2 is a partially enlarged sectional view of II-II in FIG.

This easy opening 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.

On the cover plate 1, a break portion 11 surrounded by a score line 10 having a discontinuous portion 15 having a start end and a rear end separated from each other, and a reinforcing bead 12 that reinforces the break portion 11. It has a fixing rivet portion 13 located in the center of the lid plate 1 for fixing the tab 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.

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

The tab 2 is formed from a single aluminum alloy plate, has an outer peripheral curl portion 20, and has a front end pressing portion 21, a rear end lifting portion 22, and an intermediate mounting portion 23. The holding part 21 is placed on the breaking part 11 of the lid plate 1, and most of the lifting part 22 including the lifting part 22 is placed on the outside of the breaking part 11 on the mounting part. At 23, it is fixed by the fixing rivet portion 13 of the lid plate 1. The mounting portion 23 is surrounded by a C-shaped notch 24 that is open on the side of the holding portion 21, and is located near the holding portion 21 of the tab 2 and close to the outer score line 10 of the breaking portion 11. It is located in.

Further, the tab 2 is provided with a central hole portion 26 surrounded by a curled inner peripheral curl portion 25 between the lifting portion 22 and the mounting portion 23, and as shown in FIGS. As shown, the cover plate 1 is composed of a bottom part 31 that surrounds the mounting part 23 and that adheres to the top surface of the cover plate 1 when fixed to the cover plate 1, and a sloped wall 32 connected from the bottom part 31 to the outer peripheral curl part 20. Is provided with a substantially mortar-shaped recess 30 located substantially in the center.

As shown in FIG. 3, a rivet hole 33 for a fixing rivet 13 for fixing the tab 2 to the cover plate 1 is formed in the bottom portion 31 of the recess 30. Further, a notch 24 is formed widely up to the upper end surface of the recess 30 at a portion which becomes the inclined wall 32 on the lifting side above the center line IV-IV passing through the rivet hole 33. That is, the notch 24 is formed so that the width becomes narrower from the center line IV-IV toward the C-shaped tip, and the region where the sloped wall 32 exists is located slightly below the center line IV-IV. It is only on the side of the holding section 21.

Then, as shown in FIG. 5, the recess 30 of the tab 2 fixed to the lid plate by the fixing rivet 13 at the mounting portion 23 is provided with a mark (star-shaped figure in the figure) 27 to facilitate the molding process. A prize chip 29 made of a different resin (polyethylene in this example) is attached to the upper end surface of the recess 30 so that the height of the prize tip 29 is substantially the same. Moreover, the periphery of the prize chip 29 extends to the back surface side of the tab 2 through the notch 24, and the expanded resin portion and the notch 24 are in a locked state.

In this way, unless the consumer puts his / her finger under the lifting portion 22 of the tab 2 and raises the rear end in a vertical state, the prize chip 29 mounted in the recess portion 30 of the tab 2 has a hollow shape. It is designed so that it cannot be removed from the recess 30.

Next, the operation will be described.

(When eating and drinking contents) When eating or using the contents of the can having the easy opening can lid A, when the lid plate 1 is opened, the consumer places a finger under the lifting portion 22 of the tab 2. When the back end is inserted and the back end is raised, the score line 10 between the holding portion 21 and the mounting portion 23 of the tab 2 is first moved by the lever action with the holding portion 21 of the tab 2 as the fulcrum and the vicinity of the mounting portion 23 as the point of action. Break. After that, the remaining score line 10 is broken by the lever action with the vicinity of the mounting portion 23 of the tab 2 as the fulcrum and the pressing portion 21 as the point of action, 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 with the discontinuous portion 15 of the score line 10 as a hinge portion.

The tab 2 is in a vertical state in which the tip of the C-shaped cut portion 24 becomes a bent line and is in a vertical state. However, the prize chip 29 mounted in the recess 30 of the tab 2 is shown in FIG. As described above, the tab 2 is not caused to be caused, and is separated from the recessed portion 30 and left in a state of being closely attached to the mounting portion 23. After removing the prize chip 29 from the tab 2 (removal operation will be described later), even if the tab 2 in a substantially vertical state is returned to its original position, the broken portion 11 still hangs down. It remains fixed to the lid plate 1 by the fixing rivet 13 at the mounting portion 23.

(Removing operation of prize chip 29) As shown in FIG. 6, when the tab 2 is raised up to be substantially vertical to the lid plate 1 due to the opening, the tab 2 has a notch 24. The window 35 is formed, and the prize chip 29 remains in the mounting portion 23 while slightly protruding through the window 35 toward the opening (mouth) side. As shown in FIG. 7, the removing operation of the prize chip 29 is performed by applying a pressing force in the direction of arrow a while lifting the protruding portion 29a of the prize chip 29 a little upward with a finger pad or the like. It can be easily removed from the part 23.

Since the prize chip 29 has its peripheral edge expanded and is formed to be slightly larger than the size of the window 35, even if the removing operation is performed from the opposite side of the protruding part 29a of the prize chip. It can be easily removed from the mounting portion 23 without falling into the can through the window 35.

Then, the required number of prize chips 29 can be put in an envelope as they are or attached to an application form with tape or the like, and can be sent to the sales company by mail.

(Manufacturing Method) The easy-open can lid A of the embodiment is manufactured by the following method, for example. (1) The tab 2 is continuously manufactured by a transfer press process as disclosed in, for example, JP-A-60-23145 or JP-B-64-9227.

(2) After the tab 2 is manufactured, the tab 2 is previously fixed to the cover plate 1 by the fixing rivet 13 at the mounting portion 23 (the process up to this step is the same for the opening easy can lid not for sales promotion). is there).

(3) The lid plate 1 is rotated around the central axis of the recess 30 with the fixed tab 2 facing upward, and the molten thermoplastic molding material is dripped directly into the recess 30 to generate a rotational force. While slightly expanding to the back side of the tab 2 through the notch 24, flatten the upper surface, and mechanically engage (lock) the notched resin part 24 that has been expanded by cooling and fixing the recess. The prize chip 29 is attached to the section 30.

As another mounting method, the prize chip 29 is manufactured in advance as a molded product that is substantially matched to the size of the recess 30 of the tab 2, and then the molded product is formed in the recess 30 of the tab 2. Can be placed and the upper surface of the molded product is heated and pressed. Also in this case, a part of the molded product is pushed into the notch 24 and mechanically engaged with each other.

If the mechanical engagement between the C-shaped cut portion 24 and the resin spread on the back side of the tab through the cut portion 24 is weak, the prize chip during transportation or transportation. Since 29 easily falls off from the recessed portion 30, the adhesive strength between the surface of the recessed portion 30 and the surface of the prize chip 29 may be large enough not to affect the opening property or the removal of the prize chip 29. desired.

In that case, a tab formed by coating a carboxyl group-modified polyolefin graft-modified with an unsaturated carboxylic acid or a derivative thereof, a modified polyolefin such as polyethylene oxide, or an ionomer on the thermosetting resin coating film. Material and / or cover plate, and a modified polyolefin coated as a resin for forming the prize chip 29 and a resin having good thermal adhesion (for example, when modified polyethylene is coated on a tab material or the like, polyethylene is used). Or modified polyethylene or a mixture thereof to form a prize chip), or a wax material mixed with these resins may be used. The modified polyolefin may be directly coated on the surface of the tab material or the cover plate by dispersing the powder in a thermosetting resin solution.

(4) 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. The pressing surface may be provided with a concave portion or a convex portion, or the concave portion 30 may be provided with a concave portion or a convex portion in advance and transferred to the surface of the prize chip 29. Also, after the prize chip 29 is mounted in the recess 30, it is press-molded or printed or painted by a jet printer.

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

(A) The notch 24 provided in the recess 30 of the tab 2 (The notch 24 of this example is the entire lifting portion side from the bottom surface 31 of the tiled recess 30 to the upper end surface of the recess 30. It has a wide area) and a marked easy-to-remove prize tip 29 is fixed in a locked state, so that the breakable portion 11 and the tab 2 are not separated from the lid plate 1. Although it is A, only the prize chip 29 with the mark 27 can be removed from the recess 30 and applied to a sales company or the like in order to win a prize or the like.

That is, when the can is discarded after the contents of the can are consumed, the breaking portion 11 and the tab 2 do not scatter away from the can, without impairing the usefulness of the Steion tab. The sales promotion method can be carried out in the conventional manner in which the sales company gives a prize to the consumer who collects a certain number or more of the marks 27 on the can lid.

(B) Since the prize chip 29 is attached to the tab 2 at substantially the same height as the upper end surface of the recessed portion 30 and in a state of being locked with the notch 24, the tab 2 is displayed in the store. The prize chip 29 will not be illicitly removed, nor will it float or drop from 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 are often processed, the tab 2 is almost the same as the tab fixed to the easy-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 mass-produced by simple molding means such as injection molding. It can be manufactured in advance, or can be formed by directly injecting or dripping 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.

(D) Furthermore, since the recessed portion 30 is arranged substantially in the center of the lid plate 1, no special means for providing the direction of the tab 2 is required when the prize chip 29 is assembled, so that the attachment can be easily performed. The device for can be simplified.

(E) Furthermore, when the tab 29 is pulled up, the tip 29 is separated from the recessed portion 30 without being raised together with the tab and remains in a close contact with the mounting portion 23. Therefore, when the tab 2 is pulled up, There is no concern that the prize tip 29 will fall to the inside, and the prize tip 29 is formed to be slightly larger than the size of the tab window 35 formed by the cutout portion 24 when the prize tip 29 is removed. In doing so, it does not fall into the can through the window 35, which is hygienic, and the removal operation is easy.

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 given to the prize chip 29 is not limited to the uneven shape at the time of mounting, it may be due to ink or paint, or due to the color tone of the resin itself or the colorant-mixed resin, May be a combination of two or more of them, and in the case of marking with ink or paint, it is composed of one or more of symbols, letters, numbers, figures, patterns, and color tones, and in the case of marking with concave or convex portions, It must consist of at least one of symbols, letters, numbers and figures.

The molding material of the prize chip 29 of the present invention is mainly 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 thermoplastic resins include polyester, prepropylene, polybutene-1, polymethylpentene-1, polyacetal, polyethylene terephthalate, polybutylene terephthalate, nylon, fluororesin, polyvinyl chloride, polyvinylidene chloride, polystyrene, ABS resin. , Acrylic resin, cellulosic resin, polycarbonate, phenoxy resin, polyphenylene oxide, polysulfone, ionomer, styrene butadiene, thermoplastic elastomer and the like.

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

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

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

A heat-resistant molding material is used for a can lid for retort canning that is sterilized at 100 ° C. or higher. Further, in the present embodiment, the shape of the prize chip 29 is substantially the same as the round plate shape in accordance with the recessed portion 30 so that the prize mark 27 can be made large, but the shape is not limited to this. If the size is small, the annular shape without the fixing rivet 13 may be used, and the shape of the recess 30 is not limited to the round shape. As long as it is detached from and remains on the mounting portion 23 side, it may be, for example, a rectangular shape in accordance with the shape of the recessed portion 30.

[0056]

[Effect of device]

 According to the present invention, in an easy-open can lid of a type called a Stein tab, in which the breakage portion and the tab are not separated from the lid plate even after the opening, a recess portion surrounding the mounting portion of the tab is provided. After the can contents are consumed because the prize tip is attached to the can, the marking is made while maintaining the usefulness that the breaks and tabs do not scatter away from the can when the can is discarded. The effect is that the prize chip can be removed from the recess and applied to a sales company to win a prize.

In addition, during the tab raising operation, the prize tip is not raised together with the tab and is separated from the recessed portion and remains on the mounting portion side. Therefore, during the tab raising operation and the prize tip removing operation, the prize tip is not removed. Since it can be prevented from falling into the can, it is hygienic and the removal operation is easy.

Further, since the prize chip is mounted in the recess of the tab arranged in the center of the lid plate, when the prize chip is mounted in the recess, a complicated means for aligning the directions of the tabs is unnecessary. Therefore, the device 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 an enlarged sectional view taken along line II-II of FIG.

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

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

FIG. 5 is an enlarged sectional view taken along line V-V of FIG.

FIG. 6 is an explanatory diagram showing an opening operation state.

FIG. 7 is an explanatory diagram showing a prize chip removing operation.

FIG. 8A is a plan view showing a conventional pull tab type easy opening can lid, and FIG. 8B 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 12 ... Reinforcing bead 13 ... Adhering rivet 14 ... Finger insertion recess 15 ... Discontinuous part 20 ... Outer peripheral curl part 21 ... Pressing part 22 ... Lifting part 23 ... Mounting part 24 ... Notch part 25 ... Inner peripheral curl part 26 ... Central hole part 27 ... Mark 29 ... Prize tip 30 ... Recessed part 31 ... Bottom part 32 ... Slope wall 33 ... Rivet hole

Claims (4)

[Scope of utility model registration request] 1. A scored line having a discontinuous portion is engraved to form a broken portion in a part of a lid plate, which 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 pressing 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 breaking 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 pressing portion side is open C
A notched portion having a U-shape or a U-shape, and a recessed portion that surrounds the attachment portion and is positioned substantially at the center of the lid plate, and at least most of the notched portion on the lifting portion side is the recessed portion. Is provided at the upper end of the recess, and the prize chip is mounted in the recess with its upper surface at a height almost equal to or lower than the upper end surface of the recess, and when the tab is raised, the tip is removed from the recess. An easy opening can lid, which is provided so as to be detached and remain on the mounting portion side. 2. The prize chip according to claim 1, wherein a peripheral edge portion of the prize chip is extended to the back surface side of the tab through the cut portion and is attached to the recess portion in a state of being locked with the cut portion. Easy opening can lid. 3. The prize chip is provided with a mark, and the mark is a symbol, character, number, figure, or the like made of ink or paint.
The easy opening can lid according to claim 1 or 2, wherein the can lid has one or more of a pattern and a color tone. 4. 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
A can lid having an easy opening as described in 1 to 2.