JP5772147B2 - In-mold label container and manufacturing method thereof - Google Patents

Description

  The present invention relates to an in-mold label container capable of obtaining reliable gas barrier properties and a method for producing the same.

  An in-mold label container is obtained by setting a label having a heat seal layer on a mold in advance during injection molding and fusing the heat seal layer of the label to the injection resin surface with the heat of the resin during molding. .

  As an in-mold label container using a gas barrier label, an in-mold label container having a body part and a bottom part is known. In such an in-mold label container, a label having a strong waist and a high gas barrier property is fixed to the body and the bottom as an insert material. Thereby, the in-mold label container which has the barrier property which raised the mechanical strength of the whole container with the strength of the waist of a label can be provided. Here, as the label, a label in which a main body layer made of stiff paper or synthetic paper and a barrier layer made of a gas-barrier synthetic resin material are laminated is used.

  However, in the conventional in-mold label container, the label is particularly fixed to the trunk, but the label on the trunk is fixed to the trunk in a state where the belt-like label is bent and bent. A gap is formed between the edges. For this reason, there is a problem that the gas barrier property is lowered due to the gap between the pair of end portions of the label.

JP-A-8-132477

  The present invention has been made in consideration of the above points, and an in-mold label capable of obtaining a reliable gas barrier property even when a gap exists between a pair of edges of the body label. An object is to provide a container and a method for manufacturing the same.

  The present invention includes a body portion and a bottom portion, and the body portion is located on the inner surface and has an inner surface label having a gas barrier property having a pair of edges forming an inner surface gap, and located on the outer surface and forms an outer surface gap. An outer surface label having a gas barrier property having a pair of edges and an injection resin formed between the inner surface label and the outer surface label, the bottom portion having a gas barrier property on the bottom surface label In the in-mold label container, the inner surface gap of the inner surface label and the outer surface space of the outer surface label are shifted from each other in the circumferential direction.

  In the present invention, the bottom label is located on the inner surface of the bottom portion, and the outer shape of the bottom label is larger than the outer shape of the lower end portion of the inner surface label. It is an in-mold label container characterized by extending.

  The present invention is the in-mold label container, wherein the bottom label is located on the outer surface of the bottom.

  The present invention is the in-mold label container, wherein the in-mold label container is a container for a lithium ion battery.

  The present invention is the in-mold label container, wherein the in-mold label device is a powder absorption container.

  The present invention provides an in-mold label container manufacturing method for manufacturing the above-described in-mold label container using a mold including a cavity and a core, and an inner surface label is attached to the core side surface of the mold and the outer surface is mounted to the cavity side surface. Attaching the label, shifting the inner surface gap of the inner surface label and the outer surface space of the outer surface label in the circumferential direction, attaching the bottom surface label to either the core bottom surface or the cavity bottom surface of the mold, and the core bottom surface Or a step of injecting an injection resin between the cavity and the core from either one of the bottom surfaces of the cavities.

  In the present invention, the bottom label is located on the inner surface of the bottom portion, and the outer shape of the bottom label is larger than the outer shape of the lower end portion of the inner surface label. It is a manufacturing method of the in-mold label container characterized by extending.

  The present invention is the method for manufacturing an in-mold label container, wherein the bottom label is located on the outer surface of the bottom.

  As described above, according to the present invention, the body portion includes the inner surface label having the inner surface gap and the outer surface label having the outer surface gap, and the inner surface gap of the inner surface label and the outer surface space of the outer surface label are shifted from each other in the circumferential direction. Therefore, the gas barrier property of the trunk can be improved.

1A is a plan view showing an in-mold label container according to an embodiment of the present invention, FIG. 1B is a BB longitudinal sectional view of FIG. 1A, and FIG. The CC sectional view taken on the line of a). 2A, 2B, and 2C are views showing a method for manufacturing an in-mold label container. FIG. 3 is an enlarged view of a portion D in FIG. FIG. 4 is a diagram showing an inner surface label and an outer surface label. FIG. 5 is a diagram showing a bottom label. 6A, 6B, and 6C are views showing a method for manufacturing an in-mold label container according to the second embodiment of the present invention. FIG. 7 is a view showing an inner surface label and a bottom surface label according to the third embodiment of the present invention. FIG. 8 is a view showing an outer surface label according to the third embodiment of the present invention. 9A is a plan view showing an in-mold label container according to the fourth embodiment of the present invention, FIG. 9B is a side sectional view showing the in-mold label container, and FIG. 9C is FIG. The E section enlarged view of b). FIG. 10A is a plan view showing an in-mold label container according to the fifth embodiment of the present invention, FIG. 10B is a side sectional view showing the in-mold label container, and FIG. 10C is FIG. The F section enlarged view of b).

First Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  1 (a), (b), (c) to FIG. 5 are views showing a first embodiment of the present invention.

  As shown in FIGS. 1 to 5, the in-mold label container 10 includes a substantially rectangular tube-shaped body portion 11 having a flange 14 and a bottom portion 12 connected to the lower portion of the body portion 11. A protrusion 13 is formed extending downward.

  Of these, the body 11 is located on the inner surface and has an inner surface label 5 having gas barrier properties, an outer surface label 6 that is located on the outer surface and has gas barrier properties, and is formed between the inner surface label 5 and the outer surface label 6 by injection. Injection resin 8 made.

  The bottom 12 includes a bottom label 7 that is located on the inner surface of the bottom 12 and has gas barrier properties, and an injection resin 8 that is formed on the bottom of the bottom label 7 by injection.

  Among these, the inner surface label 5 is formed to be curved, has a pair of end edges 5A, and a gap (inner surface gap) 5B is formed between the pair of end edges 5A (see FIG. 1B).

  The outer surface label 6 is formed in a curved shape and has a pair of end edges 6A, and a gap (outer surface gap) 6B is formed between the pair of end edges 6A (see FIG. 1C).

  Here, FIG. 1B is a sectional view taken along the line BB in FIG. 1A, and FIG. 1C is a sectional view taken along the line CC in FIG. As shown in FIGS. 1A to 1C, the gap 5B of the inner surface label 5 is at a position shifted by about 90 ° in the circumferential direction with respect to the gap 6B of the outer surface label 6.

  As will be described later, the inner surface label 5, the outer surface label 6, and the bottom surface label 8 all include a layer having gas barrier properties, and thus have high gas barrier properties. In this case, if the gap 5B of the inner surface label 5 and the gap 6B of the outer surface label 6 are at substantially the same position in the circumferential direction, it is conceivable that the gas barrier property of the body portion 11 itself is lowered, but according to the present invention. Since the gap 5B of the inner surface label 5 and the gap 6B of the outer surface label 6 are shifted by about 90 ° in the circumferential direction, the gas barrier property of the body portion 11 itself can be improved.

The amount of deviation in the circumferential direction between the gap 5B and the gap 6B is, for example, 10 ° or more, and is preferably 30 ° or more in consideration of ease of inspection.

Further, as described above, the bottom label 7 is located on the inner surface side (upper surface side) of the bottom surface 12, and the outer dimensions of the bottom label 7 are the outer dimensions of the lower end portion 5a of the inner surface label 5 and the bottom surface 21b of the cavity 22 described later. It is larger than the outer dimensions (see FIGS. 3 and 5). For this reason, at the time of injection molding, the injection resin 8 slightly lifts the peripheral edge portion 7a of the bottom surface label 7, and the peripheral edge portion 7a of the bottom surface label 7 can cover the lower end portion 5a of the inner surface label 5 from the outside. Thereby, the space between the lower end portion 5a of the inner surface label 5 and the peripheral portion 7a of the bottom surface label 7 can be sealed, and the gas barrier property between the body portion 11 and the bottom portion 12 can be further improved ( Dotted line 2 in FIG. 3).

  Next, the inner surface label 5, the outer surface label 6, and the bottom surface label 7 will be described below.

  As shown in FIG. 4, the inner surface label 5 and the outer surface label 6 are both formed in a band shape and are inserted into a mold 20 including a cavity 22 and a core 21 described later.

  The bottom label 7 has the same shape as the bottom 12 and is similarly inserted into the mold 20.

  The inner surface label 5, outer periphery label 6 and bottom surface label 7 having such a shape all have the same layer structure.

  That is, the inner surface label 5, the outer surface label 6, and the bottom surface label 7 are generally composed of a printing base material layer, a gas barrier layer, and an adhesive layer with an injection resin. Each of these layers can be formed by independently forming a film and bonding (dry lamination) via an adhesive, or by melt extrusion (EC, coextrusion) of a part or all of the layer. . Moreover, a printing base material layer can also be abbreviate | omitted according to a use and the objective.

  The film as the printing substrate is not particularly limited as long as it is generally printable, and for example, a polyester film, a polypropylene film, a nylon film and the like can be used as appropriate.

  Examples of the gas barrier layer include (a) aluminum foil (7 to 25 μm), (b) a metal or metal oxide layered on a plastic film by vapor deposition or the like, for example, silicon oxide vapor deposition plastic film, aluminum oxide vapor deposition Plastic film, aluminum vapor-deposited plastic film, (c) other, polyacrylonitrile resin, EVOH (ethylene vinyl acetate copolymer saponified product), PVDC (polyvinylidene chloride) film, PVDC-coated biaxially stretched plastic film, etc. It can be suitably selected according to the desired performance.

  The adhesive layer is not particularly limited as long as it adheres to the injection resin. Usually, the adhesive resin such as plastic containing the same material as the injection resin and polyethylene containing EVA (ethylene / vinyl acetate copolymer) is used. Alternatively, a plastic film or the like in which these resins are coextruded or coated can be preferably used.

  In addition, each said layer is formed in accordance with a conventional method by the dry lamination method, the extrusion lamination method, the extrusion coating method, and other coating methods.

Specifically, labels having the following layer configuration can be used as the inner surface label 5, the outer surface label 6, and the bottom surface label 7.
Stretched polypropylene layer / aluminum foil / HS layer Stretched polypropylene layer / VM layer /
Polyethylene terephthalate layer / HS layer HS layer / aluminum foil / HS layer

  Moreover, as the injection resin 8 used for the in-mold label container 10 of the present invention, an injection-moldable thermoplastic resin such as polypropylene, polyethylene, polystyrene, or the like can be used.

  Next, the manufacturing method of an in-mold label container is described with reference to FIGS.

  First, as shown in FIG. 2A, the inner surface label 5, the outer surface label 6, and the bottom surface label 7 are inserted into a mold 20 having a cavity 22 and a core 21. In this case, the inner surface label 5 is previously adsorbed on the side surface 21 a of the core 21, and the outer surface label 6 is adsorbed on the side surface 22 a of the cavity 22. Further, the bottom label 7 is adsorbed on the bottom surface 21 b of the core 21.

  In FIG. 2A, the inner surface label 5 adsorbed on the side surface 21a of the core 21 has a pair of edges 5A forming a gap 5B, and the outer surface label 6 adsorbed on the side surface 22a of the cavity 22 has a gap 6B. It has a pair of edge 6A to form. The gap 5B of the inner surface label 5 and the gap 6B of the outer surface label 6 are arranged so as to be shifted from each other by about 90 ° in the circumferential direction.

  The bottom surface label 7 may be disposed on the bottom surface 22 b of the cavity 22 without adsorbing the bottom surface label 7 to the bottom surface 21 b of the core 21.

  Next, the core 21 is brought close to the cavity 22, the core 21 is inserted into the cavity 22, and the cavity 22 and the core 21 are clamped.

  In this state, the injection resin 8 is injected into the space between the cavity 22 and the core 21 from the injection resin injection port 23 provided in the cavity 22 and opened to the bottom surface 22b side (FIG. 2B).

  The injection resin 8 slightly lifts the peripheral edge portion 7a of the bottom surface label 7 during such injection molding, and the lower end portion 5a of the inner surface label 5 can be covered from the outside by the peripheral edge portion 7a of the bottom surface label 7. In this case, the inner surface label 5 is attracted to the bottom surface 21 a of the core 21, and the outer dimension of the lower end portion 5 a of the inner surface label 5 is substantially the same as the outer dimension of the bottom surface 21 b of the core 21.

  As described above, the outer dimensions of the peripheral edge portion 7a of the bottom label 7 are larger than the outer dimensions of the lower end portion 5a of the inner surface label 5 and the outer surface dimension of the bottom surface 21b of the core 21. The portion 7 a can be smoothly bent upward through the periphery of the bottom surface 21 b of the core 21, and the lower end portion 5 a of the inner surface label 5 can be covered from the outside by the peripheral portion 7 a of the bottom surface label 7.

  Thus, the in-mold label container 10 provided with the trunk | drum 11 which has the flange 14, and the bottom part 12 which has the thread | yarn bottom part 13 is obtained. In this case, the trunk portion 11 is composed of an inner surface label 5 positioned on the inner surface, an outer surface label 6 positioned on the outer surface, and an injection resin 8 between the inner surface label 5 and the outer surface label 6 (FIG. 2C).

  The bottom 12 includes a bottom label 7 located on the inner surface and an injection resin 8 located on the bottom side of the bottom label 7.

  As described above, according to the present embodiment, the body 11 has the inner label 5 having gas barrier properties and the outer surface label 6 having gas barrier properties, so that the body 11 has a single label. Compared with the case where it has, the gas barrier property of trunk | drum 11 itself can be improved.

  Further, since the gap 5B of the inner surface label 5 and the gap 6B of the outer surface label 6 constituting the body portion 11 are shifted by about 90 ° in the circumferential direction, the gas barrier property of the body portion 11 itself can be further improved.

  Further, the peripheral edge portion 7a of the bottom surface label 7 is slightly lifted during injection molding, and the lower end portion 5a of the bottom surface label 5 can be covered from the outside by the peripheral edge portion 7a of the bottom surface label 7. The gas barrier property between them can be further improved.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS.

  In the second embodiment shown in FIGS. 6A, 6B, and 6C, a bottom label 7 that is located on the outer surface side (lower surface side) of the bottom portion 12 constituting the in-mold label container 10, and the bottom label 7 The difference is that the injection resin 8 formed on the upper side is different, and the injection resin injection port 23 is provided on the core 21 side instead of the cavity 22 side. This is substantially the same as the first embodiment shown in FIG.

  In the second embodiment shown in FIGS. 6 (a), 6 (b), and 6 (c), the same parts as those in the first embodiment shown in FIGS. To do.

  6A, 6B and 6C, first, the inner surface label 5, the outer surface label 6 and the bottom surface label 7 are inserted into a mold 20 having a cavity 22 and a core 21 (FIG. 6A). . In this case, the inner surface label 5 is attached to the bottom surface 21 a of the core 21 in advance, and the outer surface label 6 is adsorbed to the side surface 22 a of the cavity 22. Further, the bottom label 7 is adsorbed on the bottom surface 21 b of the core 21.

  6A, the inner surface label 5 adsorbed on the side surface 21a of the core 21 has a pair of end edges 5A forming a gap 5B, and the outer surface label 6 adsorbed on the side surface 22a of the cavity 22 has a gap 6B. It has a pair of edge 6A to form. The gap 5B of the inner surface label 5 and the gap 6B of the outer surface label 6 are arranged so as to be shifted from each other by about 90 ° in the circumferential direction.

  The bottom surface label 7 may be disposed on the bottom surface 22 b of the cavity 22 without adsorbing the bottom surface label 7 to the bottom surface 21 b of the core 21.

  Next, the core 21 is brought close to the cavity 22, the core 21 is inserted into the cavity 22, and the cavity 22 and the core 21 are clamped.

  In this state, the injection resin 8 is injected into the space between the cavity 22 and the core 21 from an injection resin injection port 23 provided in the core 21 and opening on the bottom surface 21b side (FIG. 6B).

  During such injection molding, the injection resin 8 presses the bottom label 7 downward, and the bottom label 7 moves to the bottom 22 b side of the cavity 22.

  Thus, the in-mold label container 10 provided with the trunk | drum 11 which has the flange 14, and the bottom part 12 which has the projection part 13 is obtained. In this case, the trunk portion 11 is composed of an inner surface label 5 positioned on the inner surface, an outer surface label 6 positioned on the outer surface, and an injection resin 8 between the inner surface label 5 and the outer surface label 6 (FIG. 2C).

  Further, the bottom portion 12 includes a bottom surface label 7 positioned on the outer surface (lower surface) and an injection resin 8 positioned on the upper side of the bottom surface label 7.

Third Embodiment Next, a third embodiment of the present invention will be described with reference to FIGS.

  The third embodiment shown in FIGS. 7 and 8 is different only in the configuration of the inner surface label 5, the outer surface label 6, and the bottom surface label 7, and the other configurations are the first embodiment shown in FIGS. Is almost the same.

  In the third embodiment shown in FIG. 7 and FIG. 8, the same parts as those in the first embodiment shown in FIG. 1 to FIG.

  7 and 8, the inner surface label 5 and the bottom surface label 7 are joined to each other at the joint portion 9. The outer surface label 6 is independent of the bonded inner surface label 5 and bottom surface 7.

  Further, the outer dimension of the bottom label 7 is larger than the outer dimension of the bottom surface 21 b of the core 21. Further, the peripheral edge 7 a of the bottom label 7 is provided with a cut 7 d that extends to a point that is orthogonal to the peripheral edge of the bottom label 7 and corresponds to the outer shape of the bottom surface 21 b of the core 21. In FIG. 7, the outer shape of the cavity 21b is indicated by a virtual line.

  7 and 8, the inner surface label 5 and the outer surface label 6 are provided with creases 5c and 6c in accordance with the outer shape of the body portion 11 of the in-mold label container 10. In other words, the body portion 11 has a substantially quadrangular cylindrical outer shape, but the inner label 5 and the outer surface label 6 are provided with the creases 5c and 6c in accordance with the outer shape of the body portion 11, so The inner surface label 5 and the outer surface label 6 can be stably held in the mold 20 without being displaced by the injection resin 8 injected into the mold 20.

  Further, since the notch 7d extending to a point corresponding to the outer shape of the bottom surface 21b of the core 21 is provided on the peripheral edge portion 7a of the bottom surface label 7 so as to be substantially orthogonal to the peripheral edge of the bottom surface label 7, it is provided on the bottom surface 22b side of the cavity 22. When the injection resin is injected from the injection port 23, the peripheral portion 7a of the bottom label 7 can be smoothly bent upward through the peripheral edge of the bottom surface 21b of the core 21 by the cut 7d. Thus, the lower end portion 5a of the inner surface label 5 can be covered from the outside by the peripheral edge portion 7a of the bottom surface label 7 (see FIG. 3).

Fourth Embodiment Next, a fourth embodiment of the present invention will be described with reference to FIGS. 9 (a), 9 (b) and 9 (c).

  In the fourth embodiment shown in FIGS. 9A, 9B, and 9C, an in-mold label container is used as a powder container, and other configurations are the same as those shown in FIGS. This is substantially the same as the first embodiment.

  In the fourth embodiment shown in FIGS. 9A, 9B, and 9C, the same parts as those in the first embodiment shown in FIGS. .

  9 (a), 9 (b), and 9 (c), an in-mold label container 10 is used as a powder storage container, and a powder 31 that dislikes moisture is stored in the in-mold label container 10. As such a powder 31, powders of pharmaceuticals, chemicals, etc. can be considered.

  A lid member 30 that covers the upper end opening of the in-mold label container 10 is bonded to the funnel 14 of the in-mold label container 10 by heat sealing.

  As the lid member 30, a laminate having a base material layer 30a, a barrier layer 30b, and a heat seal layer 30c can be used.

  As the base material layer 30a of the lid member 30, a base material layer made of a stretched polypropylene layer, a polyethylene layer, or a paper layer can be considered.

  The in-mold label container 10 includes a substantially rectangular tubular body 11 having a flange 14 and a bottom 12 connected to the lower side of the body 11, and a thread tail 13 extending downward on the periphery of the bottom 12. Is formed.

  Of these, the body 11 is formed by injection between the inner surface label 5 which is located on the inner surface and has gas barrier properties, the outer surface label 6 which is located on the outer surface and has gas barrier properties, and the inner surface label 5 and the outer surface label 6. Injection resin 8 made.

  The bottom 12 includes a bottom label 7 that is located on the inner surface of the bottom 12 and has gas barrier properties, and an injection resin 8 that is formed on the bottom of the bottom label 7 by injection.

  Among these, the inner surface label 5 is formed to be curved, has a pair of end edges 5A, and a gap (inner surface gap) 5B is formed between the pair of end edges 5A (see FIG. 1B).

  The outer surface label 6 is formed in a curved shape and has a pair of end edges 6A, and a gap (outer surface gap) 6B is formed between the pair of end edges 6A (see FIG. 1C).

  Here, FIG. 1B is a sectional view taken along the line BB in FIG. 1A, and FIG. 1C is a sectional view taken along the line CC in FIG. As shown in FIGS. 1A to 1C, the gap 5B of the inner surface label 5 is at a position shifted by about 90 ° in the circumferential direction with respect to the gap 6B of the outer surface label 6.

  Since the inner surface label 5, the outer surface label 6, and the bottom surface label 8 all include a layer having gas barrier properties, they have high gas barrier properties. In this case, if the gap 5B of the inner surface label 5 and the gap 6B of the outer surface label 6 are at substantially the same position in the circumferential direction, it is conceivable that the gas barrier property of the body portion 11 itself is lowered, but according to the present invention. Since the gap 5B of the inner surface label 5 and the gap 6B of the outer surface label 6 are shifted by about 90 ° in the circumferential direction, the gas barrier property of the body portion 11 itself can be improved.

  Further, as described above, the bottom label 7 is located on the inner surface side (upper surface side) of the bottom surface 12, and the outer dimensions of the bottom label 7 are the outer dimensions of the lower end portion 5a of the inner surface label 5 and the bottom surface 21b of the cavity 21 described later. It is larger than the outer dimensions (see FIGS. 3 and 5). For this reason, at the time of injection molding, the injection resin 8 slightly lifts the peripheral edge portion 7a of the bottom surface label 7, and the peripheral edge portion 7a of the bottom surface label 7 can cover the lower end portion 5a of the inner surface label 5 from the outside. Thereby, the space between the lower end portion 5a of the inner surface label 5 and the peripheral portion 7a of the bottom surface label 7 can be sealed, and the gas barrier property between the body portion 11 and the bottom portion 12 can be further improved ( Dotted line 2 in FIG. 3).

Fifth Embodiment Next, a fifth embodiment of the present invention will be described with reference to FIGS. 10 (a), (b) and (c).

  In the fifth embodiment shown in FIGS. 10A, 10B, and 10C, an in-mold label container is used as a container for a lithium ion battery, and other configurations are the same as those shown in FIGS. This is substantially the same as the first embodiment.

  The same parts as those in the first embodiment shown in FIGS. 10A, 10B, and 10C are denoted by the same reference numerals, and detailed description thereof is omitted.

  10A, 10 </ b> B, and 10 </ b> C, an in-mold label container is used as a lithium-ion battery container, and an electrolyte solution 32 for a lithium-ion battery is accommodated in the in-mold label container 10.

  Further, a lid member 30 that covers the upper end opening of the in-mold label container 10 is bonded to the flange 14 of the in-mold label container 10 by heat sealing.

  As the lid member 30, a laminate having a base material layer 30a, a barrier layer 30b, and a heat seal layer 30c and having an adhesive 30d interposed between the base material layer 30a and the barrier layer 30b is used. Can do.

  In addition, an electrode 33 is provided through the opening 36 of the lid member 30, and the electrode 33 is immersed in an electrolyte solution 32 for a lithium ion battery housed in the in-mold label container 10.

  Further, a safety valve 35 made of a thin plate is provided at a substantially central portion of the lid member 39.

  As shown in FIGS. 1 to 5, the in-mold label container 10 includes a substantially rectangular tube-shaped body portion 11 having a flange 14 and a bottom portion 12 connected to the lower portion of the body portion 11. A protrusion 13 is formed extending downward.

  Of these, the body 11 is formed by injection between the inner surface label 5 which is located on the inner surface and has gas barrier properties, the outer surface label 6 which is located on the outer surface and has gas barrier properties, and the inner surface label 5 and the outer surface label 6. Injection resin 8 made.

  The bottom 12 includes a bottom label 7 that is located on the inner surface of the bottom 12 and has gas barrier properties, and an injection resin 8 that is formed on the bottom of the bottom label 7 by injection.

  Among these, the inner surface label 5 is formed to be curved, has a pair of end edges 5A, and a gap (inner surface gap) 5B is formed between the pair of end edges 5A (see FIG. 1B).

  The outer surface label 6 is formed in a curved shape and has a pair of end edges 6A, and a gap (outer surface gap) 6B is formed between the pair of end edges 6A (see FIG. 1C).

  Here, FIG. 1B is a sectional view taken along the line BB in FIG. 1A, and FIG. 1C is a sectional view taken along the line CC in FIG. For this reason, the gap 5B of the inner surface label 5 is at a position shifted by about 90 ° in the circumferential direction with respect to the gap 6B of the outer surface label 6.

  Since the inner surface label 5, the outer surface label 6, and the bottom surface label 8 all include a layer having gas barrier properties, they have high gas barrier properties. In this case, if the gap 5B of the inner surface label 5 and the gap 6B of the outer surface label 6 are at substantially the same position in the circumferential direction, it is conceivable that the gas barrier property of the body portion 11 itself is lowered, but according to the present invention. Since the gap 5B of the inner surface label 5 and the gap 6B of the outer surface label 6 are shifted by about 90 ° in the circumferential direction, the gas barrier property of the body portion 11 itself can be improved.

  Further, as described above, the bottom label 7 is located on the inner surface side (upper surface side) of the bottom surface 12, and the outer dimensions of the bottom label 7 are the outer dimensions of the lower end portion 5a of the inner surface label 5, and the outer shape of the bottom surface 21b of the cavity 21 described later. It is larger than the dimensions (see FIGS. 3 and 5). For this reason, at the time of injection molding, the injection resin 8 slightly lifts the peripheral edge portion 7a of the bottom surface label 7, and the peripheral edge portion 7a of the bottom surface label 7 can cover the lower end portion 5a of the inner surface label 5 from the outside. As a result, the space between the lower end portion 5a of the inner surface label 5 and the peripheral portion 7a of the bottom surface label 7 can be sealed, and the gas barrier property between the body portion 11 and the bottom portion 12 can be further improved. (Dotted line 2 in FIG. 3).

5 inner surface label 5A edge 5B gap 5a lower end 6 outer surface label 6A edge 6B gap 7 bottom label 7a peripheral edge 8 injection resin 10 in-mold label container 11 trunk 12 bottom 13 protrusion 14 flange 20 mold 21 core 21a side 21b Bottom face 22 Cavity 22a Side face 22b Bottom face 23 Inlet 30 Cover material 31 Powder 32 Electrolytic solution 33 for lithium ion battery Electrode 35 Safety valve

Claims (8)

The torso,
With a bottom,
An inner surface label having a gas barrier property having a pair of edges that forms a gap between the inner surface and an inner surface, and a gas barrier property outer surface having a pair of edges that are located on the outer surface and forms an outer surface gap. A label, and an injection resin formed between the inner surface label and the outer surface label,
The bottom has a bottom label with gas barrier properties and an injection resin formed on the bottom label,
An in-mold label container, wherein the inner surface gap of the inner surface label and the outer surface space of the outer surface label are shifted from each other in the circumferential direction.   The bottom label is located on the inner surface of the bottom, the outer shape of the bottom label is larger than the lower end of the inner label, and the bottom label is bent at the lower end of the inner label and extends outwardly from the inner label. The in-mold label container according to claim 1.   The in-mold label container according to claim 1 or 2, wherein the bottom label is located on the outer surface of the bottom. The in-mold label container according to any one of claims 1 to 3 , wherein the in-mold label container is a container for a lithium ion battery. The in-mold label container according to any one of claims 1 to 3 , wherein the in-mold label device is a powder absorption container. In the manufacturing method of the in-mold label container which manufactures the in-mold label container according to claim 1 using a mold comprising a cavity and a core,
Attaching the inner surface label to the core side surface of the mold, attaching the outer surface label to the cavity side surface, and shifting the inner surface gap of the inner surface label and the outer surface space of the outer surface label with respect to the circumferential direction;
A step of attaching a bottom label to either the core bottom surface or the cavity bottom surface of the mold, and a step of injecting injection resin between the cavity bottom and the core from either the core bottom surface or the cavity bottom surface. A method for producing an in-mold label container.   The bottom label is located on the inner surface of the bottom, the outer shape of the bottom label is larger than the lower end of the inner label, and the bottom label is bent at the lower end of the inner label and extends outwardly from the inner label. The method for producing an in-mold label container according to claim 6.   The method for producing an in-mold label container according to claim 6, wherein the bottom label is located on the outer surface of the bottom.

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