JPH063801Y2 - Container lid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial application field" The present invention relates to a container lid for carbonated beverages or the like that can be resealed after opening, and particularly relates to a container lid that can be easily determined whether or not it is unopened.

"Prior Art" As a container lid for carbonated drinks and the like, recently, there is one as shown in Figs. 20 to 22.

This container lid is made of aluminum or the like, which is caulked and fixed to the upper end of a metal can (not shown), and a removable plastic cap that closes an opening 1A formed in the center of the lid body 1. 2 and 2. The lid body 1
Has a truncated conical shape, and the peripheral edge of the opening 1A is an annular lip 1B projecting upward and outward.

Further, the cap 2 has a disc portion 3 having a size that closes the opening 1A, and a lip engagement portion 4 formed so as to be convex inward downward along the outer periphery of the disc portion 3, A flange portion 5 spreading like a cone from the outer circumference of the lip engaging portion 4 and a pair of ring portions 6 formed outside the flange portion 5, and as shown in FIG. 3 to the lid body 1
Of the lip engaging portion 4 by covering the opening portion 1A of the lid 1 and reversing and lowering the flange portion 5 to a position along the surface of the lid body 1.
The lever is contracted inward by a lever action and the annular lip portion 1B is tightened to obtain high airtightness.

On the other hand, in order to open the container lid, the ring portion 6 of the cap 2 may be strongly pulled up with a finger. Then, as shown in FIG. 21, the flange portion 5 is inverted upward, the lip engaging portion 4 is expanded, the annular lip portion 1B is released, and the cap 2 can be removed.

[Problems to be solved by the invention] However, with this container lid, while the cap 2 can be easily opened and reattached as described above, it is difficult to distinguish whether the cap 2 is unopened or not, There was a problem in terms of safety and hygiene of the contents.

[Means for Solving the Problems] The present invention has been made to solve the above problems, and a cap is provided with a pill fur proof portion that is permanently deformed when the cap is detached from the lid body. It is characterized by making it easy to discriminate.

Alternatively, the cap may be provided with a color changing portion that causes a color change when the cap is removed from the lid body.

Alternatively, a pill fur proof member that is broken or peeled off when the cap is removed may be attached to the lid body.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 19. The same parts as those of the conventional product are designated by the same reference numerals to avoid redundant description.

(Embodiment Corresponding to Claim 1) FIG. 1 shows a first embodiment of the present invention, in which a pair of positions of the flange portion 5 of the cap 2 and the ring portions 6 are perpendicular to each other.
The pill fur proof portion 10 is formed by forming a large number of intermittent cuts in an arc shape, and only the pill fur proof portion 10 is firmly adhered or welded to the surface of the lid body 1. The bridges 11 formed between the individual cuts are set to have a strength that can be easily cut when pulling the ring portion 6 to invert the flange portion 5. The size of the pill fur proof part 10 is
The area is such that it does not hinder the reversing operation of the flange portion 5 and can be fixed to the lid body 1 with sufficient strength.

According to the above container lid, when the ring portion 6 is pulled with a finger and the cap 2 is opened, the bridges 11 are cut and the pill fur proof portions 10 remain fixed to the lid main body 1. It can be clearly distinguished from the previous one after opening. Also, once opened, the flange 5
Since the elastic force with respect to the reversing operation is slightly reduced, it is possible to open with a lighter force than that in the unopened state, and from this point as well, it can be determined whether or not it is unopened.

Note that the bridges 11 ... May be formed in a straight line shape or the like instead of being formed in an arc shape, or weakened lines may be formed instead of the bridges 11 ... Further, the number of the pill fur proof portions 10 may be one or three or more, and the formation position thereof may be inside each ring portion 6 as indicated by a chain double-dashed line 12 in the drawing.

Next, FIG. 2 shows a second embodiment of the present invention.
In this example, a thin plate-shaped pill fur proof portion 20 extending outward of the flange portion 5 is formed inside each ring portion 6, and the same as the above along the boundary between this and the ring portion 6 and the flange portion 5. The bridge 21 ... Is formed. In this example, the pill fur proof effect similar to that of the first embodiment can be obtained, but the cap 2 is used before and after opening.
The difference is that the sealing force of does not change. Similar effects can be obtained even if the pilfer proof portion 30 connected by the bridges 31 is formed at a position perpendicular to the ring portion 6 as shown in FIG.

Next, a fourth embodiment shown in FIG. 4 is characterized in that a thin-line pill fur proof portion 40 extending from the inner edge of the central portion of each ring portion 6 to the outer edge of the flange portion 5 is integrally formed. These pill fur proof parts 40 are completely cut when a finger is inserted into the ring part 6 when the cap is opened, so that it can be seen at a glance whether or not the cap is opened. It should be noted that a plurality of such thin-line pill fur proof portions are stretched around each ring portion 6, a net-like pill fur proof portion is formed in the ring portion 6, or a thin resin film is formed in the ring portion 6. The same effect can be obtained by integrally forming.

Next, FIG. 5 shows a fifth embodiment, in which the central portion of each ring portion 6 of the cap 2 is covered with an adhesive 50 such as epoxy so as to cover the lid body 1.
It is characterized by being spot-bonded to the surface of. In this example, the ring portion 6 and the adhesive 50 compose a pill fur proof portion, and when the ring portion 6 is picked up with a finger, the interface between the adhesive 50 and the ring portion 6 peels off with a certain resistance force. . On the other hand, since there is no resistance at the time of reopening, it can be easily seen that the opening has already been performed. In this example,
When each ring portion 6 is formed in advance so as to extend slightly upward from the outer periphery of the flange portion 5, the ring portion 6 warps upward after being opened once, and at a glance it can be seen whether or not it is unopened.

Next, a sixth embodiment shown in FIG. 6 is characterized in that the entire cap 2 or only the ring portion 6 is molded with low density polyethylene. The crystal structure of the portion 6 changes to extend by a predetermined length. Therefore, the shape of the ring portion 6 makes it easy to determine whether or not it is unopened, and since the diameter of the ring portion 6 becomes large at the time of reopening, there is an advantage that opening is easy.

Next, FIG. 7 shows a seventh embodiment. In this example, a ring portion 70 connected to the flange portion 5 at only one location is integrally formed in a C shape along the outer periphery of the flange portion 5 of the cap 2. In addition, a portion 7 separated from the connecting portion 70B by 180 °
In 0A, the ring portion 70 and the flange portion 5 are separated from each other over a certain length so that it is easy to insert a finger, and the other portions are connected to the ring portion 70 and the flange portion 5 by a number of thin bridges 71. And In this example, the portion connected by the bridges 71 ...
It becomes C. The ring portion 70 is preferably thicker than the flange portion 5 so that it can be easily opened.

In this embodiment, when a finger is put into the separating portion 70B and the ring portion 70 is pulled up, the ring portions 70 stand up while the bridges 71 ... Are cut one after another. When the ring portion 70 is pulled further, the flange portion 5 is inverted and the cap is closed. 2 is opened. When the cap 2 is reattached after being opened, the bridge 71 ...
In addition to being cut, the ring portion 70 is in a state of being slightly bent upward, so that it can be easily determined whether or not it is unopened. Further, in this example, the ring portion 70 is larger than that in each of the above embodiments.
The large size makes it easy to put your finger in and open the bag easily. In addition, in order to improve the finger grip, the standing side portion 70B of the ring portion 70 may be separated from the flange portion 5 in an arc shape as shown in FIG.

Next, FIG. 9 shows a ninth embodiment, in which a semi-circular ring portion 90 having both ends connected to the flange portion 5 of the cap 2 is integrally provided at positions 180 ° apart from each other. Is characterized in that the central portion 90A is separated from the flange portion 5 to the outside, and further, both side portions (pill fur proof portion) 90B of the ring portion 90 and the flange portion 5 are connected by a number of thin bridges 91. .

In this example, since the pair of connecting points of the ring portion 90 and the flange portion 5 are located 180 ° apart from each other, when the ring portion 90 is pulled up, the flange portion 5 is pulled up at the same time in both diametrically opposite ends, Compared with the configuration in which only one point of the flange portion 5 is pulled up (see FIGS. 7 and 8), the flange portion 5 can be inverted with less force, and the opening of the cap 2 becomes easier.

Next, in the tenth embodiment shown in FIG.
A semi-circular ring portion 100 that is connected to the flange portion 5 at a separated position and the other portion is separated from the flange portion 5 is provided, and in addition to the ring portion 100, a large number of rings are provided outside the flange portion 5. The pilfer proof part 102 connected by the bridge 101 is formed. In this example, since the ring portion 100 and the pill fur proof portion 102 are separate, it is easy to raise the ring portion 100, and the fingers do not hurt due to the cut marks of the bridges 101 ... When pulling up.

Next, an eleventh embodiment shown in FIG. 11 is one in which pull fur proof portions 111, 111 extending from one ring portion 110 and extending in an arc shape are formed in the flange portion 5, and a hatched portion in the drawing is a flange. It is adhered to the part 5. To open the cap 2, first, the ring portion 110 is pulled up, the bridges 112 ... Are cut, and the ring portion 110 and the pill fur proof portions 111, 111 are separated from the cap 2. Then, the cap 2 can be opened with a small opening force by the other ring portion 6.

(Embodiment corresponding to claim 2) Next, Figs. 12 and 13 show a twelfth embodiment of the present invention, in which the container lid is formed with a cap 2 from a transparent or translucent resin, A metal thin film 121 such as aluminum is formed on a part or the whole of the back surface of the flange portion 120 (color change portion) by a vapor deposition method or the like, and when the cap 2 is attached to the lid body 1, only the metal thin film 121 is removed. It is characterized in that it is adhered to the lid body 1 with an adhesive such as an epoxy type. The material and thickness of the metal thin film 121 are set so that the bonding strength to the adhesive is higher than the bonding strength to the flange portion 120. When the cap 2 is made of transparent resin,
If the back surface of the flange portion 5 is matt-finished, the discoloration becomes more distinct.

In the container lid having the above structure, when the unopened cap 2 is opened, the metal thin film 121 is peeled from the flange portion 120 and remains on the surface of the lid body 1. For this reason, when the cap 2 is reattached to the lid body 1, the flange portion 120, which looks like a silver color through the metal thin film 121 when unopened, looks discolored whitish due to irregular reflection on the back surface thereof. Therefore, it is possible to clearly know whether the cap 2 is unopened by looking at the color of the flange portion 120, and it is possible to improve the safety and hygiene of the contents of the container.

As a modification of the above embodiment, instead of forming the metal thin film 121, the whole or a part of the back surface of the flange portion of the cap has a higher bonding strength to the lid body 1 than the flange portion, and the It is also possible to adopt a structure in which the adhesives are colored by addition. Also in this case, when the cap is opened, the colored adhesive is peeled off from the flange portion, and the flange portion which is transparent and visible changes its color to whitish.

Next, FIG. 14 shows a thirteenth embodiment of the present invention.
This container lid is prepared by mixing an appropriate amount of microcapsules containing a color-developing agent and microcapsules containing a color-developing agent in a tube made of a flexible resin and filling the tube with an appropriate liquid agent. Cut it to length,
Both ends thereof are welded or adhered to the flange portion 5 to form the ring portions 130, 130.

The microcapsule is a spherical encapsulation of an oil solution in which a coloring agent or a developer is dissolved with an extremely thin film agent such as resin or gelatin. It releases a color former and a developer. In addition, as these color formers and developers,
A leuco dye and a developer thereof, which are colorless by themselves, but show clear color when mixed, are used.

In the container lid having the above structure, when the ring portion 130 is pulled with a finger to open the cap 2, the ring portion 130 is opened.
The microcapsules break due to the tension and pressing force applied to
The color developer and the developer react to produce vivid color, and the ring part 1
30 changes color. Since this color is maintained even after that, it is possible to clearly determine whether or not the cap 2 is unopened.

Various means other than the above may be used to fix the ring portion 130. For example, the tube may be set in a mold in advance, and molten resin may be injected therein to integrally mold the cap 2. .

Next, FIG. 15 shows a fourteenth embodiment of the present invention, in which the container lid extends over the flange portion 5 of the cap 2 and the lid body 1 formed of transparent or translucent resin and the manufacturing date and the like. The marking portion 140 of the flange portion 5 is crimped to the lid body 1. At the time of marking, the flange portion 5 may be heated to enhance the bondability to the lid body 1.

In the container lid, when the cap 2 is unopened, the marking portion 140 of the flange portion 5 is in close contact with the lid body 1 and the color of the lid body 1 can be seen through. However, once the cap 2 is removed, the marking is performed. The part 140 is peeled off from the lid body 1,
As in the example, the color changes to whitish due to diffuse reflection. Even when the cap 2 is reattached, the whitish color is maintained and the original color is not restored. Therefore, it is easy to determine whether or not the cap 2 is unopened. Further, since the cap 2 cannot rotate in the mounted state due to its strong sealing force, it is difficult to completely match the markings on the lid body 1 and the markings on the flange portion 5 at the time of remounting. It is possible to determine whether or not it is unopened. It should be noted that instead of forming the stamp across the flange portion 5 and the lid body 1 as described above, a structure may be formed only on the flange portion 5.

(Embodiment corresponding to claim 3) Next, FIG. 16 shows a fifteenth embodiment of the present invention.
In this container lid, a long tape material (pill fur proof member) 150 is arranged in a direction perpendicular to each ring portion 6 in a state where the cap 2 is attached to the lid body 1, and the back surface of both end portions (or the whole) thereof is arranged. Is firmly adhered to the surface of the lid body 1 (and the cap 2) with an adhesive such as an epoxy-based adhesive.

This tape material 150 is made of paper, thin fiber cloth, synthetic resin,
Alternatively, it may be made of a composite material of these and has a strength such that it can be easily broken by hand, and may have an adhesive layer on the back surface in advance, or may be one in which an adhesive is applied at the time of adhesion. Further, the adhesive strength at both ends of the tape material 150 is set to be higher than the breaking strength, and if the tape material 150 is peeled off, the adhesive strength is lost.

In the container lid having the above structure, when the ring portion 6 of the cap 2 is pulled up and the flange portion 5 is inverted,
At that time, the tape material 150 is broken, and even when the tape material 150 is mounted again, it becomes clear at a glance whether the cap 2 is unopened, and the safety and hygiene of the container contents can be improved.

In addition, since it is only necessary to attach the tape material 150 after attaching the cap 2, the cost is low, the influence on the productivity is small, and the manufacturing date of the product, the product name, the company name, etc. are attached to the tape material 150. It also has the advantage that it can be printed.

The tape material 10 may be attached at a position along the ring portions 6 and 6 as shown by the two-dot chain line a in the figure, or only the ring portions 6 are covered as shown by the two-dot chain line b in the figure. Alternatively, it may be attached in the circumferential direction along the outer peripheral edge of the flange portion 5. Furthermore, the number of the attachment points may be two or more.

Next, FIG. 17 shows a sixteenth embodiment of the present invention. This container lid is a circular transparent film (pilfer proof member) covering substantially the entire surface of the lid body 1 with the cap 2 attached. 160 is affixed (shrank process). The film 160 is made of a synthetic resin such as polypropylene, polyethylene terephthalate, polyvinyl chloride, polystyrene, etc., and has a thickness such that it can be easily broken by hand, and the back surface of its peripheral portion is bonded to the lid body 1 with an adhesive or It is heated and welded, and the adhesive strength is such that the film 150 can be neatly peeled off after the cap is opened.
In addition, in order to increase the easiness of breaking of the film 150,
A large number of circular holes may be formed in the film 150, the film 150 may be colored in a color different from that of the lid body, or a pattern may be printed on the surface thereof so as to make it easy to confirm the breakage.

In this container lid, the cap 2 cannot be removed unless the film 150 is broken, so that it is possible to easily confirm whether or not the cap 2 is unopened as in the above embodiment. Also, by sticking the neatly colored film 150, it is possible to add novelty to the design of the container and enhance the sense of quality.

Next, FIGS. 18 and 19 show a seventeenth embodiment of the present invention. This container lid is a circular film (piller proof) slightly smaller than the cap 2 between the cap 2 and the lid body 1. (Member) 170 is attached.

The film 170 is formed of a material that does not easily expand and is not attacked by the contents of the container. The thickness of the film 170 is such that the sealing force of the cap 2 is not impaired. Has been formed. The cap 2 has a ring portion 6 formed on only one side,
The folded-back portion 1 is provided on the back surface opposite to the ring portion 6.
70A is firmly adhered or welded. Further, when the cap 2 is attached to the lid body 1, the film 170 has a lower adhesive strength than the folded-back portion 170A, and the back surface of the outer peripheral portion is bonded to the surface of the lid body 1. Note that this adhesive does not adhere again after it has been peeled off.

In the container lid having the above structure, when the ring portion 6 is pulled up to reverse the flange portion 5 and then the cap 2 is pulled up from the lid body 1, the film 170 is peeled off from the lid body 1 from the side of the folded portion 170A. However, at that time, it vibrates and makes a loud noise. Since this sound is generated only when the unopened cap 2 is opened and does not occur after the reattachment, it is possible to easily know whether or not the cap 2 is unopened and to have a playful feeling. You can also The film 170 may be peeled off from the cap after opening the cap, or may be left as it is.

Although 17 types of embodiments have been described above, the present invention is not limited to these embodiments, and the configurations of the respective examples may be combined, other configurations may be appropriately added, and the shape of each part may be changed.

[Advantage of Invention] As described above, according to the container lid of the first aspect of the present invention, when the ring portion is pulled up with a finger to open the cap, the pill fur proof portion provided on the cap is permanently deformed. Since it is caused, it is possible to easily determine whether or not it is unopened, and it is possible to effectively prevent foreign matter from mixing into the contents of the container.

Further, according to the container lid of the second aspect of the present invention, when the ring portion is pulled up with a finger to open the cap, the color change portion provided on the cap changes color, and thus the same effect as described above can be obtained.

Further, according to the container lid of the third aspect of the present invention, when the ring portion is pulled up with a finger and the cap is opened, the pill fur proof member is broken or peeled off, and the same effect as described above can be obtained.

[Brief description of drawings]

1 to 11 are plan views showing first to eleventh embodiments of a container lid according to claim 1 of the present invention. Further, FIGS. 12 to 15 show an embodiment according to claim 2 of the present invention, and FIGS. 12 and 13 are a plan view and a longitudinal sectional view of the twelfth embodiment, FIGS. FIG. 19 is a plan view showing a thirteenth embodiment and a fourteenth embodiment. 16 to 19 show an embodiment according to claim 3 of the present invention, FIGS. 16 to 18 are plan views of the 15 to 17 embodiments, and FIG. 19 is a 17 embodiment. FIG. On the other hand, FIGS. 20 and 21 are longitudinal sectional views showing a conventional container lid, and FIG. 22 is a plan view of the conventional container lid. DESCRIPTION OF SYMBOLS 1 ... Lid body, 1A ... Opening part, 1B ... Annular lip part, 2 ... Cap, 3 ... Disc part, 4 ... Lip engaging part, 5 ... Flange part (corresponding to claim 1) 6, 70, 90 , 100, 110 ... Ring part, 10, 20, 30, 40, 50, 70C, 90B, 102, 111 ... Pilfer proof part, 11, 21, 31, 71, 91, 101, 112 ... Bridge, (claim) 2 equivalent) 120, 130, 140 ... Discolored portion, (corresponding to claim 3) 150, 160 ... Pilfer proof portion.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuhisa Yoshino 6-26-1 Jingumae Shibuya-ku, Tokyo Kirin Beer Co., Ltd. Co., Ltd. (72) Inventor Hiroaki Hamakawa 6-26-1, Jingumae, Shibuya-ku, Tokyo Kirin Brewery Co., Ltd.

Claims (3)

[Scope of utility model registration request] 1. A truncated cone-shaped lid main body having an opening at the center and a peripheral edge of the opening being an annular lip portion projecting outwardly upward, and the opening of the lid main body is sealed. A disc portion to be stopped, a lip engaging portion that is formed so as to be convex downward inward along the outer periphery of the disc portion, and a flange that extends from the outer periphery of the lip engaging portion in a conical surface shape. And a ring portion formed outside the flange portion, the flange portion is inverted and lowered to a position along the surface of the lid body with the disc portion covered with the opening portion of the lid body. As a result, in a container lid including a cap configured to reduce the diameter of the lip engaging portion inwardly to lock the annular lip portion, the cap is permanently deformed by removing the cap from the lid body. A container lid provided with a pill fur proof part that causes 2. A truncated cone-shaped lid main body having an opening in the center and a peripheral edge of the opening being an annular lip portion projecting upward and outward, and the opening of the lid main body is sealed. A disc portion to be stopped, a lip engaging portion that is formed so as to be convex downward inward along the outer periphery of the disc portion, and a flange that extends from the outer periphery of the lip engaging portion in a conical surface shape. And a ring portion formed outside the flange portion, the flange portion is inverted and lowered to a position along the surface of the lid body with the disc portion covered with the opening portion of the lid body. As a result, in a container lid including a cap configured to reduce the diameter of the lip engaging portion inwardly to lock the annular lip portion, the cap discolors when the cap is removed from the lid body. A container lid characterized by having a section. 3. A truncated cone-shaped lid main body having an opening in the center and a peripheral edge of the opening being an annular lip portion projecting upward and outward, and the opening of the lid main body is sealed. A disc portion to be stopped, a lip engaging portion that is formed so as to be convex downward inward along the outer periphery of the disc portion, and a flange that extends from the outer periphery of the lip engaging portion in a conical surface shape. And a ring portion formed outside the flange portion, the flange portion is inverted and lowered to a position along the surface of the lid body with the disc portion covered with the opening portion of the lid body. As a result, in a container lid including a cap configured to reduce the diameter of the lip engaging portion inwardly to lock the annular lip portion, the lid main body is broken or peeled by the detachment of the cap. A container lid having a pill fur proof member attached.