JP2569764Y2 - 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 a break portion of a can can opening easy-to-beverage can lid, and a certain number of points and figures printed on the break portion are collected and sent to a beverage can sales company. Commercial methods for selling canned beverages in which the sales company exchanges prizes or prizes or draws lots to give prizes to the winners are often performed.

[0003] A conventional easy-open can lid 100 for beverages as shown in FIG. 8 (A) has 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. As a result, the broken portion 104 is separated from the lid plate 105 together with the pull tab 102. Figure 8 shows the score and graphics printed
Only a predetermined number of the broken portions 104 shown in (B) can be collected and mailed to a beverage canning sales company.

However, it is difficult to clean the ruptured part with the pull tab when the part is separated from the lid plate and discarded in a place other than the trash can.
In addition, since a broken part may cause an unexpected injury, recently, an easy-open can lid of a type in which the broken part and the tab are not separated from the cover plate even after the opening, particularly,
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 substantially C-shaped cut portion 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. Therefore, when the can is discarded after the can contents are consumed, the breaks and the tabs are not scattered 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 and the like on the broken portion as in the past. In addition, the sales promotion method of giving prizes and the like to consumers who have collected a certain number of the points has become impossible.

[0009] Because empty cans are very bulky, collecting a few cans and sending them to a sales company requires high shipping costs, and the sales companies also need to take a very large space for empty cans. This is because they do not fit in cost.

The present invention provides a conventional easy-to-open can lid in which a break portion and a tab are not separated from a lid plate, and enables a conventional sales promotion method to be carried out. An object of the present invention is to prevent falling into a can during a raising operation or a chip removing operation.

[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 of the break portion. 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 or U-shaped notch that surrounds the mounting portion and the holding portion side is open, and includes a recessed portion that surrounds the mounting portion and is located substantially at the center of the cover plate, At least a large portion of the cut portion on the lift portion side is provided at an upper end portion of the recess portion. Is, and the depressions viewed portion, prize for chips, the upper end face of the recess and the upper surface is mounted about the same height or lower than that, when causing the tab,
It is configured to be provided so as to be detached from the concave portion and remain on the mounting portion side.

For example, the peripheral portion of the prize chip is extended to the back side of the tab through the cutout, and is attached to the recess while being locked with the cutout.

[0013] Further, the prize chip is marked with a symbol, a character, a numeral,
It may be composed of one or more of a graphic, a pattern, and a color tone.

Further, the prize chip is provided with a mark, and the mark is formed of 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. You may.

[0015]

Before the lid plate is opened, the prize winning chip is mounted in the recess of the tab with the upper surface of the chip being substantially the same height as or lower than the upper end surface of the recess. Is illegally removed from the recess and removed,
Do not fall off during transportation or transportation.

When the cover plate is opened, a finger is put 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.

On the other hand, when the tab is raised (during opening operation),
The bottom of the depression has a window corresponding to the size of the cutout, and the prize chip attached to the depression is not caused by the depression of the tub and detaches from the depression, and passes through this window. The part remains on the mounting part side. The tab is almost vertical until the tab is returned to its original position after opening a part of the lid plate without detaching the tab from the lid plate. It is possible to remove the prize chip by, for example,

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 according to an embodiment. FIG. 2 is a partially enlarged sectional view taken along the 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 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 for reinforcing the break portion 11.
, A fixing rivet portion 13 located at the center of the lid plate 1 for fixing the tab 2, and a breaking portion 1 with the fixing rivet 13 interposed therebetween.
1 and a finger insertion recess 14 formed at a position opposite to that of the finger insertion recess 14.

The score line 10 is a double score line composed of an inside score line and an outside score line. Of these, the depth of the outside score line is deeply engraved, and this portion is broken at the time of opening. You.

The tab 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 2 at the rear end.
2 and an intermediate mounting portion 23,
The holding part 21 is placed on the upper part, and most of the lid part 1 including the lifting part 22 is placed on the lid plate 1 outside the breaking part 11, and is fixed by the fixing rivet part 13 of the lid plate 1 in the mounting part 23. ing. The attachment portion 23 is surrounded by a C-shaped cut portion 24 whose holding portion 21 is open, and the outer score line 1 of the break portion 11 near the holding portion 21 of the tab 2.
It is arranged at a position close to zero.

Further, the tab 2 is provided with a central hole 26 between the lifting portion 22 and the mounting portion 23 which is surrounded by a curled inner peripheral curl portion 25, as shown in FIGS.
As shown in FIG. 2, the bottom plate 31 surrounds the mounting portion 23 and is in close contact with the top surface of the cover plate 1 when fixed to the cover plate 1, and the slope wall 32 is connected from the bottom 31 to the outer curl portion 20. A substantially mortar-shaped depression 30 located substantially at the center
It has.

As shown in FIG. 3, a fixing rivet 1 for fixing the tab 2 to the cover plate 1 is provided at the bottom 31 of the recess 30.
Three rivet holes 33 are formed. In addition, a notch 24 is formed in a wide portion up to the upper end surface of the recess 30 in a portion to be the slope 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 slope wall 32 exists is located only slightly below the center line IV-IV and only on the holding portion 21 side. Has become.

Then, as shown in FIG. 5, the tab 2 fixed to the lid plate by the fixing rivet 13 at the mounting portion 23.
The recessed portion 30 is provided with a mark (star-shaped figure in the figure) 27 and a resin-made (e.g., polyethylene in this example) prize-winning chip 29 which is easy to mold and has a height at the upper end surface of the recessed portion 30. It is almost fitted. Moreover, this prize tip 29
Of the tab 2 extends to the back surface side of the tab 2 through the cutout 24, and the expanded resin portion and the cutout 24 are locked.

As long as the consumer does not put his / her finger under the lifting portion 22 of the tub 2 and raise the rear end vertically, the prize chip 29 mounted on the depression 30 of the tub 2 will be described.
Is not removable from the recess 30.

Next, the operation will be described.

(Eating and Drinking of Contents) When eating and using or using the contents of the can having the easy-opening can lid A, when opening the cover plate 1, the consumer places a finger under the lifting portion 22 of the tab 2. When the rear end is raised, the score line 10 between the pressing portion 21 of the tab 2 and the mounting portion 23 is first formed by leverage with the pressing portion 21 of the tab 2 as a fulcrum and the vicinity of the mounting portion 23 as an operating point. Break. Thereafter, the remaining score line 10 is broken by the leverage with the vicinity of the mounting portion 23 of the tab 2 as a fulcrum and the pressing portion 21 as an action point, and the pressing force from the pressing portion 21 continues to act on the broken portion 11. The break portion 11 hangs from the cover plate 1 into the can using the discontinuous portion 15 of the score line 10 as a hinge portion.

The tab 2 is in a vertical state as a bent line at the tip of the C-shaped cut portion 24.
As shown in FIG. 6, the prize swipe chip 29 attached to 0 is separated from the recessed portion 30 and remains in close contact with the mounting portion 23 without being caused by the tab 2. After removing the prize tip 29 from the tab 2 (the removal 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 and the tab 2 is attached. It remains fixed to the lid plate 1 by the fixing rivets 13 in the part 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 notch 24 is formed in the tab 2. Window 35 is formed, and the prize tip 29 is
It remains in the mounting portion 23 in a state of slightly protruding through the window 35 toward the opening (drink). As shown in FIG. 7, the removing operation of the prize tip 29 is performed by applying a pressing force in the direction of arrow A while slightly lifting the protruding portion 29a of the prize tip 29 upward with the belly of a finger or the like. 23 can be easily removed.

Since the edge of the prize chip 29 is expanded and slightly larger than the size of the window 35, even if the prize chip 29 is removed from the side opposite to the protruding portion 29a of the prize chip. , 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 it is or pasted on an application sheet or the like with tape or the like, and sent to a sales company by mail.

(Manufacturing Method) The easy-opening can lid A of the embodiment is manufactured, for example, by the following method. (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 fixed to the cover plate 1 with the fixing rivet 13 at the mounting portion 23 in advance (the steps up to this point are the same for the easy opening can lid which is not for sales promotion). .

(3) With the fixed tab 2 facing upward, the cover plate 1 is rotated around the central axis of the recess 30, and the molten thermoplastic molding material is dropped directly into the recess 30, and the rotational force is applied. The tab 2 is slightly expanded to the back side of the tab 2 through the notch 24, the upper surface is flattened, and the resin portion that has been cooled and fixed and expanded is mechanically engaged (locked) with the notch 24 to form a depression. The prize tip 29 is attached to the section 30.

As another mounting method, the prize tip 29 is manufactured in advance as a molded product substantially matching the size of the recess 30 of the tab 2, and then the molded product is placed in the recess 30 of the tab 2. Then, the upper surface of the molded product can be heated and pressed. Also in this case, a part of the molded product is pushed into the cut 24 and mechanically engaged.

If the mechanical engagement between the C-shaped cut portion 24 and the resin spread through the cut portion 24 to the back side of the tab is weak, a prize tip is provided during transportation or transportation. The adhesive strength between the surface of the concave portion 30 and the surface of the prize chip 29 should be large enough not to affect the opening property and the removal of the prize chip 29 because the surface of the concave portion 30 and the surface of the prize chip 29 are not affected. desired.

In such a case, a tab material in which 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 is coated on a thermosetting resin coating film And / or using a lid 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, polyethylene or modified polyethylene or A prize tip is formed from these mixtures), or a wax material is mixed with these resins. The modified polyolefin may be obtained by dispersing the powder in a thermosetting resin solution and directly coating the surface of the tab material or the cover plate.

(4) When the prize chip 29 is formed with a mark 27 by forming a concave portion or a convex portion, or by printing or painting, the prize chip 29 is heated in the recessed portion 30 and pressed by a heating plate for press forming. A concave or convex portion is provided on the surface, or the concave portion 30
Alternatively, a concave portion or a convex portion may be provided in advance, and may be transferred to the surface of the prize chip 29. Also, after the prize chip 29 is mounted in the recessed portion 30, press molding is performed, or printing or painting is performed by a jet printer.

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

(B) Notch 2 provided in recess 30 of tab 2
4 (the notch portion 24 of this example is formed widely from the bottom surface 31 of the tiled dent portion 30 to the upper end surface of the dent portion 30 over the entire lifting portion side), and the prize winning chip 2 with a mark is easily removed.
9 is fixed in the locked state, so that the breakable portion 11 and the tab 2 are not easily separated from the cover plate 1 and are easy-opening can lids A, but the prize chips 29 with the mark 27 are provided.
It is possible to apply for a sales company or the like in order to obtain a prize or the like by removing only from the depression 30.

That is, after the contents of the can have been consumed, when the can is discarded, the breakable portion 11 and the tub 2 are not separated from the can and are not scattered. A sales promotion method of giving a prize to a consumer who collects a certain number or more of the marks 27 put on the can lid by a sales company of the related art can be conventionally performed.

(B) Since the prize chip 29 is mounted so as to be substantially at the same height as the upper end surface of the recessed portion 30 and to be locked with the cutout portion 24, the tab 2 can be displayed at the storefront. The prize chip 29 is not illegally removed, and does not float or fall off from the depression 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, the tab 2
Uses almost the same mold as the tab fixed to the easy opening can lid which is not used for sales promotion, and uses the same mold as the cover plate 1,
Can be manufactured in the same processing step, while the prize tip 29
Is made of resin and can be mass-produced by a simple molding means such as injection molding. Alternatively, the molten material is directly injected or dropped into the recess 30 of the tab fixed to the cover plate 1. After molding, the production costs do not increase.

(D) Further, since the recess 30 is arranged substantially at the center of the cover plate 1, no special means for providing the direction of the tab 2 is required when combining the prize winning chips 29, so that mounting is not required. Device can be simplified.

(E) Further, when the tab is raised, the prize tip 29 is separated from the recessed portion 30 without being raised together with the tab and remains in close contact with the mounting portion 23. The prize chip 29 is removed because the size of the prize chip 29 is slightly larger than the size of the window 35 of the tab formed by the notch 24 when the prize chip is raised. In doing so, it does not fall into the can through the window 35, so it is sanitary and the removing operation is easy.

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, the marks provided on the prize chip 29 are not limited to those formed by the uneven shape at the time of mounting, but are formed by ink or paint, or by the color tone of the resin itself or the resin mixed with the coloring material, and furthermore, May be a combination of two or more. In the case of a mark made of ink or paint, the mark is composed of one or more of a symbol, a character, a number, a figure, a pattern, and a color tone. , Numbers, and figures.

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 materials, and wax materials. And the like can be appropriately mixed and used. Examples of thermoplastic resins include polyester, propylene, polybutene-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. , Ethylene ethyl acrylate copolymer resin (EEA), polyamide resin, polyester resin, styrene-isoprene block polymer (S
IS), styrene / ethylene / butylene block polymer (SEBS), styrene / butadiene block polymer (SBS) and the like.

Examples of the tackifier include rosin-based resins, terpene-based resins, cumarone-inten 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.

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 make it possible to give a large size, the shape is substantially the same round plate shape in accordance with the recessed portion 30. However, the present invention is not limited to this, and if a small mark is sufficient, an annular shape excluding the fixing rivet 13 may be used. The shape of the recess 30 is not limited to a round shape.
If it is detached from the mounting portion 23 and remains on the attachment portion 23 side, the shape may be, for example, a square shape according to the shape of the recessed portion 30.

[0056]

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 prize chip is mounted in the recess, after the contents of the can are consumed, when the can is discarded, the broken portion and the tab have the usefulness that they are not separated from the can and scattered. It is possible to obtain the prize by removing the prize tip provided with the prize from the recessed portion, and to apply to a sales company or the like.

Moreover, when the tab is raised, the prize tip is not raised together with the tab and is separated from the recessed portion and remains on the mounting portion side. Since it can be prevented from falling into the inside, it is sanitary 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 cover plate, a complicated means for aligning the direction of the tab when mounting the prize chip in the recess becomes unnecessary. Therefore, the device can be simplified.

[Brief description of the drawings]

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

FIG. 2 is an enlarged sectional view taken along the line II-II of FIG. 1;

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 an enlarged sectional view taken along line VV of FIG. 1;

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

FIG. 7 is an explanatory view showing an operation of removing a prize chip;

8A is a plan view showing a conventional pull-tab type easy-open can lid, and FIG. 8B is a plan view showing a broken portion of the conventional pull-tab type easy-open can lid.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Lid plate 2 ... Tab 10 ... Score line 11 ... Breaking part 12 ... Reinforcement bead 13 ... Fixing rivet 14 ... Finger insertion concave part 15 ... Discontinuous part 20 ... Peripheral curl part 21 ... Holding part 22 ... Lifting part 23 ... Mounting part Reference Signs List 24 cut notch 25 inner curl 26 central hole 27 mark 29 prize chip 30 recess 31 bottom 32 slope wall 33 rivet hole

Claims (4)

(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 U-shaped or U-shaped cut portion, and a recess portion surrounding the mounting portion and located substantially at the center of the cover plate, wherein at least a majority of the cut portion at the side of the lifting portion is the recess. The prize chip is provided at the upper end portion of the portion, and the prize chip is mounted on the upper surface of the upper portion at substantially the same height as or lower than the upper end surface of the concave portion, and when the tab is raised, the prize chip is removed from the concave portion. An easy-opening can lid, which is provided so as to be detached and left on the mounting portion side. 2. The prize chip according to claim 1, wherein a peripheral portion of the prize chip is extended to the back side of the tab through the cutout portion, and is attached to the recessed portion while being locked with the cutout portion. Easy opening can lid. 3. The prize tip is marked with a mark, a sign, a letter, a number, a figure,
3. The easy opening can lid according to claim 1, comprising at least one 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 character, a numeral, and a figure formed by at least one of the concave portion and the convex portion. 1
3. An easy opening can lid according to any one of claims 1 to 3.