JP2021037990A - Cap and container - Google Patents

Abstract

To provide a cap capable of improving a function of a sealing member.SOLUTION: A cap 100 includes a cap body 111 that has a top plate portion 121 formed with an uneven portion 121a and a cylindrical skirt portion 122 integrally provided on a peripheral edge portion of the top plate portion 121, and a sealing member 112 that is provided separately from the cap body 111, and is formed with a deforming portion 112d of a shape corresponding to the uneven portion 121a at a part opposing to the uneven portion 121a of the top plate portion 121.SELECTED DRAWING: Figure 1

Description

The present invention relates to a cap and a container for sealing a can container for containing a beverage.

Conventionally, many caps for sealing the mouth of a can container for containing a beverage are provided with a resin sealing member in close contact with the container mouth on the inner surface of the cap body. Then, in such a cap, in order to reduce the opening torque at the time of opening the cap, a technique of making the cap body and the sealing member non-adhesive has been proposed (for example, Patent Document 1 and Patent Document 2). reference).

Further, in the cap, a technique of providing an uneven portion such as Braille on the top plate portion is known (see, for example, Patent Document 3).

Japanese Unexamined Patent Publication No. 2004-217295 Japanese Unexamined Patent Publication No. 2017-178421 JP-A-2002-179122

However, in such a cap, not only Braille or the like is provided on the top plate of the cap body, but also an uneven portion having a shape having distinctiveness and design is provided, and various information, product distinctiveness, and designability are provided. It is required to improve the function of the cap by providing such as. Further, the sealing member that is separate from the cap body is also required to have improved functions as in the case of the cap body.

Therefore, an object of the present invention is to provide a cap capable of improving the function of the sealing member.

The cap according to one aspect of the present invention is a cap body having a top plate portion on which an uneven portion is formed and a tubular skirt portion integrally provided on the peripheral edge portion of the top plate portion, and a separate body from the cap body. The top plate portion is provided with a sealing member in which a deformed portion having a shape corresponding to the uneven portion is formed at a portion of the top plate portion facing the uneven portion.

The container according to one aspect of the present invention is separate from the cap body having a top plate portion on which an uneven portion is formed and a tubular skirt portion integrally provided on the peripheral edge portion of the top plate portion, and the cap body. A cap provided on the body and provided with a sealing member in which a deformed portion having a shape corresponding to the uneven portion is formed in a portion of the top plate portion facing the uneven portion, and the contents are filled and sealed by the cap. It is provided with a can container to be used.

According to the present invention, it is possible to provide a cap capable of improving the function of the sealing member.

The side view which shows the structure of the container which concerns on one Embodiment of this invention in a partial cross section. The perspective view which shows the structure of the cap. A side view showing the structure of the cap in a partial cross section. The plan view which shows the structure of the cap. The cross-sectional view which shows the main part structure of the cap. The plan view which shows the structure of the sealing member used for the cap. The flow chart which shows an example of the manufacturing method of the cap. The flow chart which shows an example of the manufacturing method of the container.

Hereinafter, the cap 100 and the container 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 8.
FIG. 1 is a side view showing a structure of a container 1 according to an embodiment of the present invention in a partial cross section. FIG. 2 is a perspective view showing the configuration of the cap 100. FIG. 3 is a side view showing the configuration of the cap 100 in a partial cross section. FIG. 4 is a plan view showing the configuration of the cap 100. FIG. 5 is an enlarged cross-sectional view showing the cap body 111 and the sealing member 112 of the cap 100. FIG. 6 is a plan view showing the configuration of the sealing member 112 from the sliding layer 141 side. FIG. 7 is a flow chart showing an example of a manufacturing method of the cap 100, and FIG. 8 is a flow chart showing an example of a manufacturing method of the container 1.

As shown in FIG. 1, the container 1 includes a cap 100 and a can container 200 sealed by the cap 100. The container 1 is a positive pressure can filled with a beverage by sealing the can container 200 filled with the beverage with a cap 100. The positive pressure can has an internal pressure higher than that of the atmospheric pressure, and is manufactured by making the beverage itself a beverage filled with a gas such as carbonic acid or by filling the beverage with liquid nitrogen.

First, the can container 200 to which the cap 100 is crowned will be described with reference to FIG. As shown in FIG. 1, the can container 200 is a so-called bottle-type container for accommodating beverages and the like. For example, the can container 200 is made of a metal material such as an aluminum alloy or a surface-treated steel plate in which resin films are laminated on both sides. The can container 200 is formed in a cylindrical shape having a different outer diameter with one end reduced in diameter. The can container 200 has a mouth portion 210 at one end for discharging the contained beverage. The mouth portion 210 has a jaw portion 211, a male screw portion 212, and a curl portion 213 on the outer peripheral surface thereof from the bottom surface side to the end portion of the can container 200.

The jaw portion 211 is configured to project in an annular shape. The curl portion 213 is formed to have a smaller diameter than the male screw portion 212. Further, the curl portion 213 is configured to be smaller than the inner diameter of the cap 100. The curl portion 213 is formed by bending the end portion of the mouth portion 210 one or more times. The curl portion 213 constitutes an opening for discharging the beverage stored in the can container 200.

Next, the cap 100 according to this embodiment will be described. As shown in FIGS. 1 to 5, the cap 100 includes a cap main body 111 and a sealing member 112 separately provided in the cap main body 111.

The cap body 111 is made of a material in which a resin film layer is formed on a metal material such as an aluminum alloy. The cap body 111 is formed into a cup shape by drawing, knurling, roll-on, press-molding, or the like, a thin flat plate-shaped material.

The cap body 111 includes a disc-shaped top plate portion 121 and a cylindrical skirt portion 122 that hangs down from the peripheral edge portion of the top plate portion 121. In the cap body 111, the top plate portion 121 and the skirt portion 122 are integrally and continuously formed by an annular and curved corner portion 123.

The top plate portion 121 is formed in a disk shape. As shown in FIGS. 1 to 5, the top plate portion 121 has a flat main surface and has an uneven portion 121a as a part thereof. The uneven portion 121a is formed, for example, by performing press molding on a part of the top plate portion 121. The uneven portion 121a is formed by at least one of a concave portion and a convex portion provided in a part of the top plate portion 121. That is, the uneven portion 121a is formed by performing at least one of embossing and debossing.

The uneven portion 121a is provided, for example, to allow the cap body 111 to have information such as functionality such as Braille and product information and design such as design. That is, the uneven portion 121a improves the function of the sealing member 112 by giving the top plate portion 121 various information and design characteristics. In the present embodiment, as shown in FIGS. 1 and 3, the concave-convex portion 121a will be described with reference to an example in which the concave-convex portion 121a is formed by a star-shaped concave portion recessed from the outer surface side of the top plate portion 121. In other words, the depth of the uneven portion 121a is, in other words, the height of the top plate portion 121 from the inner surface is, for example, 0.05 mm to 2 mm.

One end of the skirt portion 122 is continuous with the top plate portion 121 via the corner portion 123, and the other end is open. The skirt portion 122 includes a plurality of knurled portions 131 having a vent slit 131a, a female screw portion 132, and a tamper evidence band portion 133 from the end portion on the top plate portion 121 side to the opening portion.

The knurled portion 131, the female screw portion 132, and the tamper evidence band portion 133 include a top plate portion 121, a cylindrical skirt portion 122 in which the knurled portion 131, the female screw portion 132, and the tamper evidence band portion 133 are not formed, and a corner. A cup-shaped molded product composed of parts 123 is formed by processing such as knurling molding or roll-on molding.

The knurl portion 131 has a plurality of vent slits 131a and protrudes from the inner peripheral surface of the skirt portion 122. The vent slit 131a is a notch for discharging the gas in the can container 200 when the can container 200 is opened. The vent slit 131a is provided in a part of the knurled portion 131, and includes a concavo-convex portion that is recessed from the outer surface side to the inner surface side, and a notch for gas discharge provided at the upper end portion of the concavo-convex portion.

The end portion of the vent slit 131a on the notch side (the other end side of the skirt portion 122) protrudes inward in the radial direction of the cap 100 from the end portion on the other side. The plurality of vent slits 131a form a locking portion in which the non-adhesive sealing member 112 is locked to the cap body 111 by the end portion on the notch side, and the sealing member 112 is held in the cap body 111.

The female screw portion 132 is configured to be screwable with the male screw portion 212 of the can container 200. The female screw portion 132 is formed together with the can container 200. That is, the female screw portion 132 is not molded in the finished product of the cap 100 before being attached to the can container 200, but is molded when integrally combined with the can container 200.

The tamper evidence band portion 133 engages with the jaw portion 211 of the can container 200 in the direction in which the cap 100 is separated from the can container 200 and in the axial direction of the cap 100. Further, the tamper evidence band portion 133 has a broken portion 133a for breaking when the cap 100 is opened and detaching from the skirt portion 122. That is, the tamper evidence band portion 133 is configured by forming a slit leaving the broken portion 133a on the end side of the skirt portion 122, and is integrally combined with the can container 200 like the female screw portion 132. Occasionally, it engages with the jaw portion 211 by being shaped into the shape of the jaw portion 211 of the can container 200.

The sealing member 112 is configured separately from the cap body 111 and is not adhered to the cap body 111. The sealing member 112 has a disc shape having an outer diameter larger than the diameter of the inscribed circle of the knurl portion 131 provided on the skirt portion 122 of the cap body 111. The sealing member 112 is integrally provided with the cap body 111 by engaging with the vent slit 131a of the knurl portion 131 protruding in the radial direction from the inner peripheral surface of the skirt portion 122 in the axial direction of the cap body 111.

For example, as shown in FIGS. 1, 3 and 5, the sealing member 112 includes a disk-shaped sliding layer 141 and a disk-shaped sealing layer 142 integrally laminated on the sliding layer 141. I have. In the sealing member 112, the sliding layer 141 and the sealing layer 142 are made of different synthetic resins. In the sealing member 112, the sealing layer 142 is integrally laminated on the sliding layer 141. For example, as shown in FIGS. 1 and 3, the sealing member 112 includes a flat plate portion 112a having a uniform thickness, a curved surface portion 112b in which the outer surface of the outer peripheral edge on the top plate portion 121 side is a curved surface, and a flat plate portion. It has a thick portion 112c that is thicker than the flat plate portion 112a provided between the portion 112a and the curved surface portion 112b. In other words, the sealing member 112 has a disk shape, and the ridge portion on the top plate portion 121 side is formed of a curved surface having a predetermined curvature. As shown in FIG. 1, the thick portion 112c exists in a region that comes into contact with the mouth portion 210 on the outer peripheral side of the sealing member 112, for example. In the thick portion 112c, the sealing layer 142 is thicker than the flat plate portion 112a on the central side of the sealing member 112, and the sliding layer 141 is the same thickness as or has the same thickness as the flat plate portion 112a. thin.

The sliding layer 141 is made of a resin material having a relatively higher hardness (harder) than the sealing layer 142. Further, the sliding layer 141 is made of a resin material having neither adhesiveness nor adhesiveness with the resin film layer of the cap body 111. That is, the sliding layer 141 is not adhered to the top plate portion 121, and slides on the top plate portion 121 in a state of being in contact with the top plate portion 121.

Examples of the resin material used for the sliding layer 141 include olefin resins such as polypropylene resin and polyethylene resin, polyester resins such as polyethylene terephthalate, styrene resins, and acrylic resins. In the present embodiment, the sliding layer 141 is made of, for example, polypropylene resin. Pigments, lubricants, softeners, plasticizers and the like can be appropriately added to the resin material used for the sliding layer 141. Further, in the example of the present embodiment, the hardness of the sliding layer 141 is D10 to D70 in terms of the durometer D hardness according to JIS-K7215. More preferably, the hardness of the sliding layer 141 is D40 to D65 in terms of the durometer D hardness according to JIS-K7215. The hardness of the sliding layer 141 can be changed by changing the amount of additives such as plasticizers, copolymerizing the resin material, or blending other resin materials.

As shown in FIG. 3, the sliding layer 141 is provided separately from the cap main body 111 so as to face the top plate portion 121 of the cap main body 111. The sliding layer 141 is configured to be slidable with the top plate portion 121 of the cap body 111 depending on the resin material used. The sliding layer 141 is formed in a disk shape. The outer diameter of the sliding layer 141 is smaller than the inner diameter of the skirt portion 122, substantially the same diameter as the inscribed circle of the knurl portion 131, or slightly larger than the inscribed circle of the knurl portion 131, and the curl portion 213 of the mouth portion 210. It is configured to have a larger diameter than the outer diameter of.

As shown in FIGS. 1, 3 and 5, for example, the sliding layer 141 is composed of a first flat plate portion 141a having a uniform thickness and an outer surface of an outer peripheral edge on the top plate portion 121 side formed by a curved surface. A first curved surface portion 141b, a protruding portion 141c provided on the sealing layer 142 side of the first curved surface portion 141b, and a thin-walled portion 141d provided between the first flat surface portion 141a and the first curved surface portion 141b are provided. ing. The thickness of the first flat plate portion 141a is uniformly configured from the center of the sliding layer 141 to the outer peripheral side of the portion of the mouth portion 210 facing the curl portion 213.

The first curved surface portion 141b is configured such that the thickness of the portion of the mouth portion 210 from the outer peripheral side to the outer peripheral edge of the portion facing the curl portion 213 of the mouth portion 210 gradually decreases toward the outer peripheral edge. The protrusion 141c is formed in an annular protrusion shape that is inclined with respect to the axial direction of the sliding layer 141 and the surface direction of the top plate portion 121 and is curved or inclined toward the opening end side of the skirt portion 122. To. The thickness of the protruding portion 141c gradually decreases from the first curved surface portion 141b toward the tip end. The thin-walled portion 141d is formed to be thinner than the first flat plate portion 141a.

The sealing layer 142 is made of a resin material having a hardness (softer) relatively lower than that of the sliding layer 141. Examples of the resin material used for the sealing layer 142 include olefin resin, polyester resin, styrene resin, acrylic resin and the like, and more preferably, a blend material of styrene elastomer and polypropylene resin, low density polyethylene and styrene resin. Examples thereof include a blend material of an elastomer and a polyester-based elastomer. The resin material used for the sealing layer 142 has adhesiveness with the resin material used for the sliding layer 141. In the present embodiment, the sealing layer 142 is composed of, for example, a blend material of a styrene-based elastomer and a polypropylene resin. Pigments, lubricants, softeners, plasticizers and the like can be appropriately added to the resin material used for the sealing layer 142.

The sealing layer 142 is integrally provided on the main surface of the sliding layer 141 on the side facing the mouth portion 210. The sealing layer 142 is formed in a disk shape. The outer diameter of the sealing layer 142 is smaller than the inner diameter of the skirt portion 122, substantially the same diameter as the inscribed circle of the knurl portion 131, or slightly larger than the inscribed circle of the knurl portion 131, and the curl portion 213 of the mouth portion 210. It is configured to have a larger diameter than the outer diameter of. That is, the outer diameter of the sealing layer 142 is the same as the outer diameter of the sliding layer 141, or is configured to be larger than the outer diameter of the sliding layer 141.

As shown in FIGS. 1, 3 and 5, the sealing layer 142 has a second flat surface portion 142a having a uniform thickness and a second curved surface in which the outer surface of the outer peripheral edge on the top plate portion 121 side is a curved surface. Thickness provided between the portion 142b, the annular recess 142c provided on the main surface of the second curved surface portion 142b opposite to the sliding layer 141 side, and the second flat plate portion 142a and the second curved surface portion 142b. It has a meat part 142d and. The main surface of the second flat plate portion 142a facing the curl portion 213 is formed to be flat. For example, the second flat plate portion 142a is configured to have the same diameter as the first flat plate portion 141a of the sliding layer 141. The second flat plate portion 142a, together with the first flat plate portion 141a, constitutes the flat plate portion 112a of the sealing member 112. In this embodiment, the first flat plate portion 141a and the second flat plate portion 142a are set to have the same thickness.

The second curved surface portion 142b has, for example, a main surface flush with the main surface of the second flat surface portion 142a facing the curl portion 213. The second curved surface portion 142b is configured such that the thickness of the portion of the mouth portion 210 from the outer peripheral side to the outer peripheral edge of the portion facing the curl portion 213 of the mouth portion 210 gradually decreases toward the outer peripheral edge. The second curved surface portion 142b is laminated on the first curved surface portion 141b and the protrusion 141c. The second curved surface portion 142b constitutes the curved surface portion 112b of the sealing member 112 together with the first curved surface portion 141b and the protrusion portion 141c.

The recess 142c is in contact with the vent slit 131a when the cap 100 is arranged with the top plate portion 121 facing upward and the sealing member 112 falls below the top plate portion 121. The recess 142c is, for example, an annular recess having a semicircular cross section. The thick portion 142d is formed to be thicker than the second flat plate portion 142a and the thin portion 141d. The thick portion 142d, together with the thin portion 141d, constitutes the thick portion 112c of the sealing member 112.

The sliding layer 141 and the sealing layer 142 are configured such that the first curved surface portion 141b, the protruding portion 141c, and the second curved surface portion 142b are thinner than the first flat plate portion 141a and the second flat plate portion 142a, respectively.

As shown in FIG. 6, such a sealing member 112 has a deformed portion 112d in which the sliding layer 141 and the sealing layer 142 have irregularities in the same shape as the concave-convex portion 121a provided on the top plate portion 121. Has. The deformed portion 112d is plastically deformed, and the shape of the deformed portion 112d is maintained even when the deformed portion 112d is not in contact with the uneven portion 121a. Depending on the thickness of the sealing member 112, the hardness of the material, and the like, the deformed portion 112d may have a smaller degree of protrusion on the sealing layer 142 side than the depth of the recess on the sliding layer 141 side. Further, the deformed portion 112d is only recessed on the sliding layer 141 side and does not have to protrude on the sealing layer 142 side. That is, only the sliding layer 141 may be deformed.

Further, the resin material used for the sealing member 112, that is, the resin material used for the sliding layer 141 and the sealing layer 142, is, for example, the container 1 in which the cap 100 is covered with the can container 200 and the contents are filled. In an environment where heat sterilization treatment such as retort treatment is performed, the deformed portion 112d is formed on the sealing member 112 by being heated by the internal pressure and temperature of the container 1 and being brought into close contact with the uneven portion 121a of the top plate portion 121. A resin material that can be transferred) is used.

Similar to the uneven portion 121a, the deformed portion 112d is provided to give the sealing member 112 information such as functionality such as Braille and product information display and design such as design. That is, the deformed portion 112d improves the function of the sealing member 112 by giving the sealing member 112 various information and design.

The manufacturing method of the cap 100 and the manufacturing method of the container 1 configured in this manner will be described with reference to FIGS. 7 and 8.

First, a method of manufacturing the cap 100 will be described with reference to FIG. 7. For example, a sheet-shaped metal material is squeezed by a shell press device or the like, and a top plate portion 121 and a cylindrical skirt portion 122 in which the knurl portion 131, the female screw portion 132, and the tamper evidence band portion 133 are not formed are formed. , A cup-shaped molded product composed of the corner portion 123 is molded (step ST1). Next, the sliding layer 141 is molded by supplying the softened resin material onto the inner surface of the top plate portion 121 of the molded product by the sliding layer molding apparatus and shaping the supplied resin material (step ST2).

Next, the sealed layer 142 is molded by supplying the softened resin material onto the sliding layer 141 in the molded product by the sealing layer molding apparatus and shaping the supplied resin material (step ST3). As a result, the sealing member 112 is molded in the molded product.

Next, the sealing member 112 in the molded product is taken out by a transport device or the like that conveys the sealing member (step ST4). Next, the first molding is performed by molding the skirt portion 122 of the molded product with the knurl portion 131 and the tamper evidence band portion 133 by a molded product processing device or the like (step ST5). Next, a second molding is performed in which the uneven portion 121a is molded on the top plate portion 121 by a molded product processing device or the like (step ST6). The first molding and the second molding may be performed at the same time, or the order may be reversed. The cap body 111 is formed by these steps.

Next, the sealing member 112 is inserted into the cap body 111 by a transport device or the like (step ST7). At this time, the peripheral edge portion of the sealing member 112 is inserted so as to get over the vent slit 131a and come into contact with the top plate portion 121. The sealing member 112 inserted into the cap body 111 may be a sealing member 112 formed by another cap body 111, or may be a sealing member 112 formed inside itself.

The cap 100 is manufactured by inserting the sealing member 112 into the cap body 111. Next, when the cap 100 is collected in the collecting unit and a certain number of caps 100 are collected in the collecting unit, the cap 100 is transported to the inspection / packing process, which is the next process.

Next, a method of manufacturing the container 1 will be described with reference to FIG. First, the can container 200 is filled with contents such as a beverage and liquid nitrogen (step ST11). Next, the can container 200 is covered with the cap 100 so that the curl portion 213, which is the tip of the mouth portion 210 of the can container 200, and the sealing layer 142 of the sealing member 112 are in contact with each other, and the cap 100 is placed on the can container 200. (Step ST12).

Next, the cap 100 is wound and fixed to the mouth 210 of the can container 200 (step ST13). In the winding tightening, a load is applied to the top plate portion 121 of the cap body 111, and the skirt portion 122 is roll-on molded while the corner portion 123 is drawn toward the can container 200 to form the skirt portion 122 of the cap 100. This is done by molding the female screw portion 132. As a result, the can container 200 is sealed. At this time, the pressure inside the can container 200 becomes positive.

Next, in order to sterilize the can container 200, the container 1 in which the cap 100 is wound and fixed to the can container 200 is retort-treated (step ST14). The conditions of the retort treatment vary depending on the contents. For example, the retort treatment is performed at a temperature of 110 ° C. to 130 ° C. and a time range of 10 minutes to 30 minutes. After the retort treatment, the container 1 is cooled (step ST15) and dried (step ST16) to produce a container 1 which is a positive pressure can filled with a beverage. During the retort treatment, the sealing member 112 is heated and pressurized, and then cooled to transfer the shape of the uneven portion 121a to form the deformed portion 112d. Further, cooling and drying may be performed in the same process. Further, as the sterilization treatment of the can container 200, the contents are hot-filled at a high temperature of about 70 ° C. to 95 ° C. instead of the retort treatment, and the can container 200 is sterilized by laying it sideways, or the can container 200 is sterilized. It may be sterilized by sprinkling hot water at about 70 ° C. to 95 ° C. The deformed portion 112d can also be formed by heating the cap 100 by such a sterilization treatment.

The cap 100 configured in this way has a structure in which a concavo-convex portion 121a is provided on the top plate portion 121 and a deformed portion 112d is provided on the sealing member 112, and the shape of the deformed portion 112d is a shape corresponding to the concavo-convex portion 121a.

With such a configuration, the sealing member 112 can improve the function in the same manner as the uneven portion 121a of the top plate portion 121. For example, when the uneven portion 121a is provided with functions such as information such as Braille and product display and design such as design, the sealing member 112 may also be provided with the same information and function by the deformed portion 112d. it can.

For example, when the uneven portion 121a and the deformed portion 112d are marked so that the production lot or the like can be determined, the production lot can be determined not only for the cap body 111 but also for the sealing member 112. Further, for example, when the deformed portion 112d is provided with a design property, the design property of the sealing member 112 can be improved.

Further, since the sealing member 112 is adhered to the cap body 111 and is separate from the cap body 111, various designs can be applied to, for example, motivate the purchaser to collect the sealing member 112. It is also possible to motivate the purchase of a product in which the container 1 is filled with a beverage. It is also possible to design the cap body 111 and the sealing member 112 according to the season, the event, and the like.

Further, by providing the concavo-convex portion 121a on the cap main body 111 and further providing the deformed portion 112d on the sealing member 112, the cap 100 can enhance the design of both the inside and the outside.

Further, for example, by setting the shapes of the concave-convex portion 121a and the deformed portion 112d to be annular or the like, it is possible to impart a function capable of aligning the sealing member 112 with respect to the top plate portion 121 in the radial direction. Therefore, when the container 1 once opened is sealed again, the thick portion 112c of the sealing member 112 can be aligned with the mouth portion 210.

Further, since the deforming portion 112d is configured to deform the sealing member 112, it is not necessary to increase the material used for the sealing member 112, and the functionality of the sealing member 112 is improved without increasing the manufacturing cost. Can be made to. As described above, the function of the sealing member 112 can be improved by providing various information, functions, designs, and the like by the deformed portion 112d.

Further, the uneven portion 121a is composed of concave portions, and a flat plate portion is arranged around the central axis of the cap main body 111 in a part in the circumferential direction of the uneven portion 121a. The structure may be such that the positions of 121a and the deformed portion 112d are displaced. With such a configuration, when the cap is opened, the uneven portion 121a of the top plate portion 121 presses a part of the sealing member 112 excluding the deformed portion 112d, so that the sealing member 112 is pressed against the mouth portion 210. Therefore, the sealing property of the sealing member 112 can be improved.

As described above, according to the cap 100 according to the embodiment of the present invention, the function of the sealing member 112 can be improved by the deformed portion 112d.

The present invention is not limited to the above-described embodiment. For example, in the above-described example, some usage examples have been described as examples of improving the functions of the uneven portion 121a of the cap body 111 and the deformed portion 112d of the sealing member 112, but the present invention is not limited thereto. That is, the shape of the deformed portion 112d of the sealing member 112 can be appropriately set according to the shape of the uneven portion 121a of the cap body 111, and the usage method and the content of the function to be provided can be appropriately set. That is, if the configuration of the above-described embodiment is obtained, the shapes of the concave-convex portion 121a and the deformed portion 112d can be appropriately set, so that various uses are possible and a high degree of freedom is provided.

Further, in the above-described example, the structure in which the sealing member 112 has two layers of the sliding layer 141 and the sealing layer 142 has been described, but the present invention is not limited to this, and the sealing member 112 may be a single layer or may have three or more layers. It may have a structure. Further, the shape of the sealing member 112 can be appropriately set. Further, an example in which the deformed portion 112d of the sealing member 112 is formed by a heat sterilization treatment such as a retort treatment has been described, but the present invention is not limited to this, and the deformed portion 112d may be formed by the internal pressure of the container 1 or as a hot beverage in stores. It may be formed by heating in. The configuration of the cap 100 can be appropriately set as long as it has a configuration having a deformed portion 112d having a shape corresponding to the uneven portion 121a and the function can be improved.

That is, the present invention is not limited to the above-described embodiment, and can be variously modified at the implementation stage without departing from the gist thereof. In addition, each embodiment may be carried out in combination as appropriate, and in that case, the combined effect can be obtained. Further, the above-described embodiment includes various inventions, and various inventions can be extracted by a combination selected from a plurality of disclosed constituent requirements. For example, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, if the problem can be solved and the effect is obtained, the configuration in which the constituent requirements are deleted can be extracted as an invention.

1 ... Container, 100 ... Cap, 111 ... Cap body, 112 ... Sealing member, 112a ... Flat plate part, 112b ... Curved surface part, 112c ... Thick part, 112d ... Deformed part, 121 ... Top plate part, 121a ... Concavo-convex part, 121b ... Flat surface part, 122 ... Skirt part, 123 ... Corner part, 131 ... Knar part, 131a ... Vent slit, 132 ... Female screw part, 133 ... Tamper evidence band part, 133a ... Breaking part, 141 ... Sliding layer, 141a ... 1st flat plate portion, 141b ... 1st curved surface portion, 141c ... Projection portion, 141d ... Thin wall portion, 142 ... Sealing layer, 142a ... 2nd flat plate portion, 142b ... 2nd curved surface portion, 142d ... Thick portion, 200 ... Can container, 210 ... mouth, 211 ... jaw, 212 ... male screw part, 213 ... curl part.

Claims (4)

A cap body having a top plate portion on which an uneven portion is formed and a tubular skirt portion integrally provided on the peripheral edge portion of the top plate portion.
A sealing member provided separately from the cap body and having a deformed portion having a shape corresponding to the uneven portion formed at a portion of the top plate portion facing the uneven portion.
Cap with. The sealing member includes a sliding layer facing the top plate portion and a sealing layer laminated on a main surface of the sliding layer opposite to the main surface facing the top plate portion, according to claim 1. The cap described. The sealing member is formed of a resin material to which the shape corresponding to the uneven portion is transferred under the environment when the can container covered with the cap is heat sterilized, according to claim 1 or 2. Described cap. A cap body having a top plate portion on which an uneven portion is formed and a tubular skirt portion integrally provided on the peripheral edge portion of the top plate portion, and a cap body provided separately from the cap body and the top plate portion. A cap provided with a sealing member in which a deformed portion having a shape corresponding to the uneven portion is formed on a portion facing the uneven portion.
A can container filled with the contents and sealed by the cap,
Container with.