TW202014348A - Cup-shaped container and laminate for cup-shaped container includes a body in a cylindrical shape and a bottom body in an inverted U-shaped, in which the body and the bottom body are integrated by joining with each other - Google Patents

Abstract

The present invention provides a cup-shaped container which can be manufactured at a low price by using the manufacturing equipment for the paper-made cup-shaped container. The content therein is excellent in long-term storage and can be sterilized by aseptic sterilization and retort sterilization. The cup-shaped container 1 of the present invention is composed of a body 2 and a bottom body 3. The body 2 is formed into a cylindrical shape by overlapping and joining both edges of a blank body 20A. The body has a back-fold portion 22 that is folded inward and backward at the lower opening edge, and a flange portion 23 that is bent outward at the upper opening edge. The bottom body 3 is formed into a substantially inverted U-shaped in cross-section by forming a descending portion 32 on an outer peripheral of a bottom blank body 30A. An outer surface of the descending portion 32 is joined to an inner surface of a lower end portion 2a of the body 2, and the back-fold portion 22 is joined to an inner surface of the descending portion 32. Therefore, the body 2 and the bottom body 3 are in an integrated form. The blank body 20A and the bottom blank body 30A respectively include a laminate 20 and 30 having metal foil layers 201 and 301 and hot-melt adhesive resin layer 202 and 302 laminated on the metal foil layers 201 and 301, and having no paper layer. The bottom body 3 is formed by drawing-forming the bottom blank body 30A.

Description

Cup-shaped container and laminated body for cup-shaped container

The present invention relates to, for example, a cup-shaped container containing food or drink such as ice cream or yogurt, and a laminate used as a material of the container.

As a container for filling and packaging semi-solid dairy products such as ice cream or yogurt, a cup-shaped container made of paper, that is, a paper cup is generally used. Paper cups are usually formed by joining together a body composed of paper blanks cut into predetermined shapes and a bottom body. In more detail, the present system overlaps and joins the two ends of the slightly fan-shaped body blank to form a cylindrical shape, and forms an inwardly folded back at the lower opening edge, and opens at the upper edge A flange portion bent outward is formed. In the bottom system, a slightly rounded blank for the bottom body is formed into a skirt shape at its outer peripheral portion, and its cross section is slightly inverted U-shaped. Next, the hanging portion of the bottom body is wrapped in the folded portion of the main body and joined, thereby integrating the main body and the bottom body. Each blank for the main body and the substrate is, for example, a laminate comprising a paper layer composed of general base paper, acid-resistant paper, coated paper, etc., and a polyethylene resin (PE) layer laminated on one or both sides of the paper layer Structure (for example, refer to the following Patent Document 1).

In addition, as the material of each of the above-mentioned blanks, in addition to a paper layer and a polyethylene resin (PE) layer, a paper cup using a laminated body formed by laminating a barrier layer composed of aluminum foil or the like is also known (for example, refer to the following Patent Document 2 mentioned).

In addition, as a container for ice cream, yogurt, etc., a container made of a plastic molded body such as polypropylene resin (PP) is also known (for example, refer to Patent Document 3 below). [Prior Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Unexamined Patent Publication No. 58-30955 [Patent Document 2] Japanese Patent Laid-Open No. 2007-210639 [Patent Document 3] Japanese Unexamined Patent Publication No. 2007-176505

[Problems to be solved by the invention]

However, although the paper cup is excellent in productivity and can be manufactured at a low price, on the other hand, the barrier property is not good, and it is not suitable for long-term storage of contents. In the case of a paper cup with a barrier layer such as aluminum foil, although the long-term storage of the contents is improved, water easily invades from the end surface of the paper layer, and sterilization of the sterilizer cannot be performed. In addition, in the case of plastic containers, the cost of manufacturing equipment becomes high, and it is not suitable for long-term storage of contents.

The present invention has been completed in view of the above-mentioned problems, and an object of the present invention is to provide a cup-shaped container that can be manufactured at a low price using a paper-made cup-shaped container manufacturing equipment, and also has excellent long-term storage of contents and can also be carried out Aseptic sterilization (Aseptic) or sterilization. [Means to solve the problem]

In order to achieve the above object, the present invention is composed of the following aspects.

1) A cup-shaped container, which is composed of a body and a bottom body, the system overlaps and joins the two end edges of the body blank to form a cylindrical shape, and has an outward bending at the upper opening edge The flange part of the bottom system, the bottom body is formed into a blank with the outer peripheral part forming a sag, and its section is slightly inverted U-shaped; by making the inner surface of the lower end of the body and the outer part of the sag of the bottom Surface bonding to make the body and the bottom body integrated; among them, The main body blank is formed of a laminate having a metal foil layer and a heat-fusible resin layer laminated on both sides of the metal foil layer but not a paper layer. On both end edges of the main body blank, the The heat-fusible resin layers constituting the mutually overlapping surfaces are thermally welded to each other for joining, and the metal foils at both end edges are laminated through the heat-fusible resin layers that have been thermally welded. The blank for the substrate is formed by a laminate having a metal foil layer and a heat-fusible resin layer deposited on both sides of the metal foil layer as the upper side of the substrate but not having a paper layer. On the inner surface and the outer surface of the drooping portion of the bottom body, the heat-fusible resin layers constituting these surfaces are thermally welded to each other for bonding, and the metal foil layer at the lower end of the body and the metal at the drooping portion of the bottom body The foil layer is laminated through a heat-fusible resin that has been thermally welded.

2) The cup-shaped container as described in 1) above, wherein the bottom system is formed by drawing the bottom body with a blank.

3) The cup-shaped container as described in 1) or 2) above, in which the flange portion is folded downward to form a flat shape.

4) The cup-shaped container as described in 1) or 2) above, in which the flange portion is bent downward and its cross section is formed in a slightly arc shape.

5) The cup-shaped container according to any one of the above 1) to 4), wherein the edge of the blank for the main body becomes the inner edge of the main body to meet the surface of the blank for the outer side of the main body The overlapping way is reversed, and the surface is thermally welded.

6) The cup-shaped container according to any one of the above 1) to 5), wherein the thickness of the metal foil layer forming the laminate for the body blank is 40 to 200 μm, and the thickness of the metal foil layer forming the laminate for the substrate for the base The thickness is 40-200 μm.

7) The cup-shaped container according to any one of 1) to 6) above, wherein the thickness of the heat-welding resin layer laminated on both sides of the metal foil layer in the laminate forming the body blank is 5 to 80 μm, respectively, to form a substrate The thickness of the heat-fusible resin layer stacked on both sides of the metal foil layer in the laminate of the blank to be the upper side of the substrate is 5 to 80 μm.

8) The cup-shaped container according to any one of 1) to 7) above, wherein the total thickness of the heat-fusible resin layer in which the both end edges of the body blank are thermally fused to each other at the overlapping portion of the body is 8 to 150 μm .

9) The cup-shaped container according to any one of the above 1) to 8), wherein the overlapping width of the metal foil layers of both ends of the main body blank at the overlapping portion of the main body is 2 to 2 10mm.

10) The cup-shaped container according to any one of the above 1) to 9), wherein the body further has a reverse folding portion which is reversely folded inwardly in such a manner as to enclose the lower hanging portion of the bottom body from the opening edge of the lower end; The laminate forming the blank for the base body further has a heat-fusible resin layer, which is laminated on both sides of the metal foil layer to become the surface under the base body; The reversed portion of the body and the drooping portion of the bottom body are joined by thermally fusing the heat-fusible resin layers that constitute the mutually overlapping surfaces, and the heat-fusible resin layer that has been thermally welded has a built-in reaction Folded metal foil layer.

11) The cup-shaped container as described in 10) above, wherein the laminated body forming the blank for the substrate is laminated on both sides of the metal foil layer to become a heat-sealing resin layer on the lower surface of the substrate, and has a thickness of 5 to 80 μm.

12) A cup-shaped container, which is composed of a body and a bottom body, the system overlaps and joins the two end edges of the body blank to form a cylindrical shape, and has an outward bending at the upper opening edge The flange part of the bottom system is formed by forming a sag on the outer periphery of the bottom body blank, and its cross section is slightly inverted U-shaped; by joining the outer surface of the sag of the bottom body to the bottom end of the body The inner surface makes the body and the bottom body integrated; among them, The blank for the main body is formed by cutting a laminate with a metal foil layer and a heat-fusible resin layer laminated on both sides of the metal foil layer but without a paper layer into a size having a length twice that of a predetermined length, and folding in half at the center of the length Overlap, and then thermally fuse the resin layers that form the overlap surface to each other; the two ends of the body blank are laminated so that the edge of the reverse side becomes the inside of the body, and by The thermally fusible resin layers constituting the mutually overlapping surfaces are thermally welded and joined, and the metal foil layers at both end edges are laminated through the thermally fusible resin layers that have been thermally welded; The blank for the substrate is formed of a laminate having a metal foil layer and a heat-fusible resin layer laminated on both sides of the metal foil layer to become the upper side of the substrate but not having a paper layer, and the inner part of the lower end of the body The outer surfaces of the surface and the drooping portion of the bottom body are joined by thermally fusing the heat-fusible resin layers constituting these surfaces, and the metal foil layer at the lower end of the body and the metal foil layer at the lower portion of the bottom body Laminated through heat-fusible resin through heat welding.

13) The cup-shaped container as described in 12) above, wherein the bottom system is formed by drawing the bottom body with a blank.

14) The cup-shaped container as described in 12) or 13) above, in which the flange portion is folded down and formed into a flat shape.

15) The cup-shaped container as described in 12) or 13) above, in which the flange portion is bent downward and its cross section is formed into a slightly arc shape.

16) The cup-shaped container according to any one of the above 12) to 15), wherein the body further has a reversing portion, which is folded inwardly in such a manner as to enclose the drooping portion of the bottom body from the opening edge of the lower end, The laminate forming the blank for the base body further has a heat-fusible resin layer, which is laminated on both sides of the metal foil layer to become the surface under the base body, The reversed portion of the body and the drooping portion of the bottom body are joined by thermally fusing the heat-fusible resin layers constituting the mutually overlapping surfaces, and the inside of the heat-fusible resin layer that has been thermally welded is laminated and folded back Part of the metal foil layer.

17) A cup-shaped container, which is composed of a body and a bottom body, this system makes the two ends of the main body blank overlap each other in a palm shape and are joined together, thereby forming a cylindrical shape, and having an upper opening edge A flange part bent outwards, the bottom system is formed in such a way that the outer periphery of the bottom body blank forms a sag, and its cross section is slightly inverted U-shaped; by joining the outer surface of the sag of the bottom body to the lower end of the body The inner surface of the part makes the body and the bottom body integrated; The main body blank is formed of a laminate having a metal foil layer and a heat-fusible resin layer deposited on both sides of the metal foil layer as the inner side of the main body, but not having a paper layer. The two ends of the palm-shaped edge are joined by thermally welding the heat-fusible resin layers to each other, and the metal foil layers of the two end edges are laminated through the heat-fusible resin layers that have been thermally welded; The blank for the substrate is formed by a laminate having a metal foil layer and a heat-fusible resin layer formed on both sides of the metal foil layer as the upper side of the substrate but not having a paper layer, and the inner surface of the lower end of the body And the outer surface of the drooping portion of the bottom body is joined by thermally fusing these heat-fusible resin layers to each other, and the metal foil layer at the lower end of the body and the metal foil layer at the drooping portion of the bottom body pass through heat Laminated heat-fusible resin laminate.

18) The cup-shaped container as described in 17) above, wherein the bottom system is formed by drawing the bottom body blank.

19) The cup-shaped container as described in 17) or 18) above, wherein the laminated body forming the blank for the main body further has a heat-fusible resin layer stacked on both sides of the metal foil layer to become the outer side of the main body, The palm joint portion of the body is bent to one side so as to overlap with the outer surface of the body, and is thermally welded to the outer surface.

20) The cup-shaped container according to any one of the above 17) to 19), wherein the flange portion is reversely folded down and formed into a flat shape.

21) The cup-shaped container according to any one of the above 17) to 19), wherein the flange portion is bent downward and the cross section is formed into a slightly arc shape.

22) The cup-shaped container according to any one of the above 17) to 21), wherein the body further has a reversing portion, which is folded inwardly in such a manner as to enclose the hanging portion of the bottom from the opening edge of the lower end, The laminate forming the blank for the base body further has a heat-fusible resin layer, which is laminated on both sides of the metal foil layer to become the surface under the base body, The reversal part of the main body and the drooping part of the bottom body are formed by thermally fusing the thermally fusible resin layers constituting the mutually overlapping surfaces, and the thermally fusible resin layer after the thermal fusion has a built-in reflexed part Metal foil layer.

23) A laminate for a cup-shaped container, which is a laminate used in the following cup-shaped container as a material for a blank for a main body and a blank for a bottom body, the cup-shaped container being composed of a main body and a bottom body , The present system stacks the two ends of the main body blank with each other and joins or overlaps into a palm shape and joins, thereby forming a cylindrical shape, and has an outwardly curved flange portion at the upper opening edge, the bottom body is The bottom body blank is formed in such a way that the outer peripheral portion forms a sag, the cross section of which is slightly inverted U-shaped, and by joining the outer surface of the lower part of the bottom body to the inner surface of the lower end of the body, the body and the bottom Body becomes one; This laminate has a metal foil layer and a heat-fusible resin layer laminated on at least one of the two surfaces of the metal foil layer, but does not have a paper layer. [Effect of invention]

According to the cup-shaped container of 1) above, the body blank is formed of a laminate having a metal foil layer and a heat-fusible resin layer laminated on both sides thereof, and the base blank is formed of a metal foil layer and a laminate Since both sides of the metal foil layer are formed of a laminate of a heat-fusible resin layer that becomes the upper surface of the bottom body, it can be manufactured at low cost using the manufacturing equipment of a cup-shaped container mainly composed of paper. In addition, according to the cup-shaped container of 1) above, since the laminate to be the material of each blank has a metal foil layer, the content is excellent in long-term storage. In addition, according to the cup-shaped container of 1) above, since the laminate as the material of each blank does not have a paper layer, it can be sterilized in a sterilizer. In addition, according to the cup-shaped container of 1) above, excellent sealing and barrier properties can be obtained at the overlapping portion of the body and the junction of the lower end of the body and the hanging portion of the bottom.

According to the cup-shaped container of 2) above, the following effects can be exerted. That is, in the case of conventional paper cups, wrinkles are likely to occur when the bottom body blank is formed into a slightly inverted U shape in cross section, and these wrinkles cause poor bonding between the lower part of the bottom body and the lower end of the body , In addition, there is a doubt that the barrier property is reduced. In addition, in the case of using a paper cup for aseptic filling, the sterilizing liquid is likely to remain at the boundary between the body and the bottom of the paper cup. This is considered to be due to the formation of the base body mainly made of paper, because the corner portion of the paper is broken between the bottom portion and the hanging portion, and the corner portion is not easily exposed at the corner portion. On the other hand, according to the cup-shaped container of the above 2), the bottom system is formed by drawing the bottom body formed of a laminate having a metal foil layer and a heat-fusible resin layer but not a paper layer. The bottom body will not wrinkle, so there will be no poor joint between the lower part of the bottom body and the lower end of the body, which can certainly prevent the deterioration of barrier properties. Also, according to the cup-shaped container of 2) above, the corners are easily exposed at the corners between the bottom and the sag in the bottom body, so even when aseptic filling is performed, the sterilizing liquid will not remain on the bottom The junction between the body and the base in

According to the cup-shaped container of 3) or 4) above, since the end surface of the body blank is not exposed at the front end side of the flange portion of the body, for example, when the content is a beverage, the flange portion can be used as a drinking mouth without Obstacle function.

According to the cup-shaped container of 5) above, in the overlapping portion of the body, the end surface of the metal foil layer is not in contact with the contents stored in the container, so corrosion can be suppressed.

According to the cup-shaped container of 6) above, sufficient barrier properties and moldability can be obtained.

According to the cup-shaped container of 7) above, sufficient adhesion strength can be obtained at the overlapping portion of the main body or the junction of the lower end of the main body and the lower portion of the bottom body. In addition, according to this container, since the step difference of the portion composed of the superposed portion in the upper surface of the flange portion of the main body can be alleviated, the sealing performance when the lid is closed by the lid material becomes good.

According to the cup-shaped container of the above 8), at the overlapping portion of the main body, while ensuring the sealability, while giving excellent barrier properties, the long-term storage of the contents can be further improved.

According to the cup-shaped container of 9) above, since the overlapping width is 2 mm or more, the sealing portion of the main body can ensure the sealing performance, and on the other hand, can provide excellent barrier properties, and can further improve the long-term storage of the contents Sex. Moreover, according to this container, since the overlap width is 10 mm or less, it is possible to suppress the increase in cost due to the width of the overlapped portion exceeding a necessary level, and further, it is possible to suppress the difference in stress between the inner portion and the outer portion of the overlapped portion. This may cause appearance defects such as wrinkles in the inner portion of the overlapping portion.

According to the cup-shaped container of 10) above, the adhesion between the lower end of the body and the drooping portion of the bottom is improved, and the sealing and barrier properties are improved at the junction between the two, and at the lower end of the container, the blank and bottom for the body Since the end surface of the metal foil layer of the body blank is not exposed downward, corrosion can be suppressed.

According to the cup-shaped container of the above 11), at the junction of the reversed portion of the main body and the drooping portion of the bottom body, while ensuring the sealing performance, while providing excellent barrier properties, the long-term storage of the contents is further improved.

According to the cup-shaped container of 12) above, the effect similar to the cup-shaped container of 1) above can be exerted. In addition, according to this cup-shaped container, the barrier property of the body is significantly improved. Furthermore, according to this cup-shaped container, at the overlapping portion of the body, the end surface of the metal foil layer is not in contact with the contents contained in the container, and therefore corrosion can be suppressed.

According to the cup-shaped container of 13) above, the effect similar to the cup-shaped container of 2) above can be exerted.

According to the cup-shaped container of 14) or 15) above, the same effect as the cup-shaped container of 3 or 4) above can be exerted.

According to the cup-shaped container of 16) above, the effect similar to that of the cup-shaped container of 10) above can be exerted.

According to the cup-shaped container of 17) above, the effect similar to the cup-shaped container of 1) above can be exerted. In addition, according to this cup-shaped container, the end face of the metal foil layer does not come into contact with the contents stored in the container at the palm-joining portion of the body, so corrosion can be suppressed.

According to the cup-shaped container of 18) above, the effect similar to the cup-shaped container of 2) above can be exerted.

According to the cup-shaped container of 19) above, since the palm-sealing portion of the body is bent to one side and thermally welded to the outer surface of the body, the sealing and barrier properties of this portion can be improved. In addition, according to this container, since the palm joint portion does not protrude outward, the appearance becomes good and it is easy to handle.

According to the cup-shaped container of the above 20) or 21), the same effect as the cup-shaped container of the above 3) or 4) can be exerted.

According to the cup-shaped container of 22) above, the effect similar to the cup-shaped container of 10) above can be exerted.

The laminated body for a cup-shaped container according to the above 23) has a metal foil layer and a heat-fusible resin layer laminated on at least one of the two surfaces. Therefore, a body blank and a bottom body composed of this laminated body are prepared The blanks can be manufactured at low cost using equipment for manufacturing cup-shaped containers mainly made of paper. In addition, the laminate for a cup-shaped container according to the above 23) has a metal foil layer, so that the cup-shaped container made of this material can be used as a container with excellent long-term storage of contents. Furthermore, according to the above-mentioned 23), the laminate for a cup-shaped container does not have a paper layer, so the cup-shaped container manufactured from the material of each blank can be sterilized by sterilization.

Hereinafter, an embodiment of the present invention will be described with reference to the first to fifteenth drawings. [First Implementation Aspect]

The first and second figures show the overall structure of the cup-shaped container (1) according to the first embodiment of the present invention. The container (1) is a body (2) formed from a body blank (20A) and a bottom The bottom body (3) formed by the body blank (30A) is joined and integrated. The body (2) has a tapered cylindrical shape, as shown in the fifth figure, and is formed by overlapping and joining the two end edges of the fan-shaped body blank (20A). Therefore, there is a superposed portion (21) extending in the height direction of the body (2). At the lower opening edge of the body (2), an inwardly folded portion (22) is formed. In addition, a flange portion (23) bent outward is provided at the upper opening edge of the body (2). The flange portion (23) is folded down and formed into a slightly horizontal flat shape. The eighth figure shows a modified example in which the flange portion (23X) can also be bent downward and the cross section is formed into a slightly arc shape. The bottom body (3) has a circular horizontal bottom (31) and a sag (32) extending downward from the outer periphery of the bottom (31), and its cross section is slightly inverted U-shaped, as shown in the sixth figure, its system The round bottom body blank (30A) is drawn and formed so that the outer peripheral portion forms a hanging portion (32). Next, the outer surface of the drooping portion (32) of the bottom body (3) is joined to the inner surface of the lower end (2a) of the body (2), and the reversed portion (22) and the drooping portion (32) of the body (2) The inner surface of the is joined, thereby the body (2) and the bottom body (3) are integrated (refer to the second and seventh figures). In addition, in the ninth figure, a modification is shown. The reverse opening (22) is not formed at the lower opening edge of the body (2), and the structure can be formed only by the outer portion of the bottom part (3) of the hanging portion (32) The surface is joined to the connecting structure of the inner surface of the lower end (2a) of the body (2), so that the body (2) and the bottom body (3) are integrated. According to the structure of this modification, even if a slight wrinkle occurs in the hanging portion (32) during the molding of the bottom body (3), air or the like is not mixed, and the lower end portion (2a) of the body (2) can be reliably ) Sealed with the hanging part (32) of the bottom body (3).

The main body blank (20A), as shown in the third (a), is composed of a heat-fusible resin layer (202) having a metal foil layer (201) and laminated on both sides of the metal foil layer (201) but not having a paper layer Composed of laminates (20). Furthermore, the blank for substrate (30A), as shown in the third (b) figure, is composed of a heat-fusible resin layer (302) having a metal foil layer (301) and laminated on both sides of the metal foil layer (301). It is composed of a laminate (30) without a paper layer. The thickness of each laminate (20) (30) is preferably less than 250 μm, and more preferably less than 200 μm. By making the thickness of each layered body (20) (30) within the above range, it is possible to reliably avoid the flange portion (23) of the body (2) as if a paper cup using a layered body with a thickness of about 250 to 400 μm as a blank material is used The step formed by the overlapping portion (21) in the middle becomes larger, and the lower end portion (2a) of the main body (2) and the folded-back portion (22) are not joined to the hanging portion (31) of the bottom body (3) Stabilize such problems.

The metal foil layer (201) (301) functions as a barrier layer to protect the contents from gas, water vapor, light, etc. As the metal foil constituting the metal foil layers (201) (301), aluminum foil, iron foil, stainless steel foil, copper foil, or the like can be used, but aluminum foil is preferably used. In the case of aluminum foil, it may be either pure aluminum foil, aluminum alloy foil, or soft or hard, such as the annealed soft material of the A8000 series (especially A8079H and A8021H) classified in JIS H4160 (O material) can be preferably used because of its excellent formability. Both sides of the metal foil layer (201) (301) can also be subjected to the bottom treatment such as chemical conversion treatment according to needs. Specifically, for example, after applying any one of the following aqueous solutions of 1) to 3) to the surface of the metal foil subjected to degreasing treatment, a chemical conversion treatment is performed by drying to form a film: 1) contains phosphoric acid, chromic acid, and is selected from An aqueous solution of a mixture of at least one compound in the group consisting of a metal salt of fluoride and a non-metal salt of fluoride. 2) Phosphoric acid, at least one resin selected from the group consisting of acrylic resins, chitosan derivative resins and phenol resins, selected from the group consisting of chromic acid and chromium (III) salts An aqueous solution of a mixture of at least one compound. 3) Phosphoric acid, at least one resin selected from the group consisting of acrylic resins, chitosan derivative resins and phenol resins, selected from the group consisting of chromic acid and chromium (III) salts An aqueous solution of a mixture of at least one compound and at least one compound selected from the group consisting of a metal salt of fluoride and a non-metal salt of fluoride. The film formed on the surface of the metal foil layer (201) (301) by the chemical conversion treatment preferably has a chromium adhesion amount (per single side) of 0.1 mg/m ² to 50 mg/m ² , and particularly preferably 2 mg/ m ² ～20mg/m ² . The thickness of the metal foil layers (201) (301) is preferably 40 to 200 μm, and more preferably 80 to 160 μm. By making the thickness of the metal foil layers (201) (301) within the above range, sufficient barrier properties and moldability can be obtained.

The heat-fusible resin layer (202) (302) constitutes the inner and outer surfaces of the container (1), which functions to protect the metal foil layer (201) (202) and impart deep drawability to the laminate (20) (30), in addition , Which is used when the two ends of the main body blank (20A) are joined to each other, and the lower end (2a) and the reversed portion (22) of the main body (2) are joined to the hanging portion (32) of the bottom body (3) As a function of the heat welding layer. The heat-fusible resin layer (202) (302), for example, is made of a general-purpose film such as a polypropylene resin (PP) film or a polyethylene resin (PE) film having thermal weldability, or a composite film laminated to these The composition, but particularly preferred is a non-stretching polypropylene resin film (CPP) excellent in heat resistance and drawing moldability. In addition, as an alternative to the above-mentioned film, a heat-sealing property may be formed by a coating layer of maleic acid modified polyethylene resin, maleic acid modified polypropylene resin, ethylene-vinyl acetate resin, epoxy resin or shellac resin, etc. Resin layer (202) (302). The thickness of the heat-welding resin layer (202) (302) is preferably 5 to 80 μm, and more preferably 10 to 60 μm. By making the thickness of the heat-fusible resin layer (202) (302) within the above range, it is possible to join the two edges of the body blank (20A), the lower end (2a) of the body (2), and the reverse The joint of the folded part (22) and the drooping part (32) of the bottom body (3) has sufficient adhesive strength, and can relax the overlapping part (21) in the upper surface of the flange part (23) of the body (2) The step difference of the constituent parts makes the sealing performance when sealing with the cover material good.

The lamination of the metal foil constituting the metal foil layer (201) (301) and the film constituting the heat-fusible resin layer (202) (302) can be performed by a dry lamination method through an adhesive layer (not shown), for example. For the adhesive layer, for example, a two-component hardening type polyester-polyurethane resin-based adhesive or polyether-polyurethane resin-based adhesive can be used.

In addition, the laminate (20) constituting the main body blank (20A) and the laminate (30) constituting the bottom body blank (30A) are generally the same, but they may be different materials and/or thicknesses.

Next, an example of a method of forming a cup-shaped container (1) using the above-described laminates (20) (30). First, the laminated body (20) is punched into a fan shape of a predetermined size to form a body blank (20A) (refer to the fifth (a) diagram). In addition, the laminate (30) is pressed into a circle of a predetermined size to form a blank for a substrate (30A) (refer to figure 6 (a)), and the blank (30A) is deep drawn using a mold (not shown) The forming process is performed to form a bottom body (3) composed of a bottom portion (31) and a hanging portion (32) with a slightly inverted U-shaped cross section (see the sixth (b) diagram). No wrinkles were generated in the obtained substrate (3). Also, the corner portion is exposed at the corner portion between the bottom portion (31) and the hanging portion (32) in the outer surface of the bottom body (3). Next, a bottom body (3) is provided on the top surface of a slightly truncated cone-shaped mold (not shown in the figure) so that the top surface of the bottom overlaps, and then the body blank (20A) is wound on the outer circumferential surface of the mold to make both After the end portions are overlapped with each other, the heat-fusible resin layers (202) (202) where the overlapped portions (21) are overlapped with each other are thermally welded to each other, thereby forming a cone-shaped body (2). In addition to the heat sealing using a hot plate, the means of heat welding of the overlapping portion (21) may be high-frequency sealing or ultrasonic sealing. Next, the lower opening edge of the body (2) is folded inward, and the folded portion (22) is pressed against the hanging portion (32) of the bottom body (3) by a disc-shaped rotating mold (not shown) ), the heat-fusible resin layer (202) (302) of the lower end portion (2a) and the folded-back portion (22) of the body (2) and the lower portion (32) of the bottom body (3) overlapping each other is thermally welded , So that the body (2) and the bottom body (3) are joined to form a whole. Finally, a predetermined bending mold (not shown) is used to bend the upper opening edge of the body (2) outward and pressurize it in the vertical direction to form a flat shape to form the flange portion (23). In this way, the cup-shaped container (1) shown in the first and second figures is obtained.

In the superimposed portion (21) of the body (2) of the cup-shaped container (1), the total thickness of the heat-fusible resin layers (202) (202) at the two end edges of the body blank (20A) are thermally welded to each other ( T1) is preferably 8 to 150 μm, and more preferably 16 to 80 μm (refer to the fourth figure). If the above-mentioned total thickness (T1) is less than 8 μm, there is a possibility that the sealability of the overlapping portion (21) is insufficient. On the other hand, if the total thickness (T1) exceeds 150 μm, there is a concern that the barrier property of the overlapping portion (21) is impaired. Moreover, in the overlapping portion (21) of the body (2), the overlap width (W1) viewed from the thickness direction of the metal foil layers (201) (201) at both end edges of the body blank (20A) is preferably It is 2-10 mm, more preferably 4-8 mm. If the overlap width (W1) is less than 2 mm, there is a concern that the barrier property of the overlapping portion (21) is impaired, and if the seal width becomes too small, there is a concern that the sealability is insufficient. On the other hand, if the overlap width (W1) exceeds 10 mm, the width of the overlapping portion (21) is greater than the demand, resulting in increased costs, and may cause the inner portion of the overlapping portion (21) (blank for the body (20A ) At one end edge) and the outer portion (the other end edge portion of the main body blank (20A)) have different stresses, causing appearance defects such as wrinkles in the inner portion of the superposed portion (21).

The cup-shaped container (1) according to the present embodiment has the following effects. a) Because the main body blank (20A) and the bottom body blank (30A) are composed of a laminate with a metal foil layer (201) (301) and a heat-welding resin layer (202) (302) laminated on both sides thereof (20) (30), so it can be manufactured at low cost using manufacturing equipment for cup-shaped containers mainly made of paper. b) Since the laminate (20) (30) which is the material of each blank (20A) (30A) has a metal foil layer (201) (301), the content is excellent in long-term storability. c) The thickness of the main body blank (20A) becomes smaller, so the step difference of the portion composed of the overlapping portion (21) in the upper surface of the flange portion (23) of the main body (2) can be reduced, so the cover When the material is sealed on the upper surface of the flange portion (23) of the container (1), it is less likely to cause a defective seal. In addition, in the case of aseptic filling, it is difficult for the sterilizing liquid to remain on the above-mentioned step difference on the upper surface of the flange portion (23). d) Because the bottom body (3) is formed by deep drawing of the bottom body blank (30A) without wrinkles in the bottom body (3), there will be no paper cups on the bottom body (3 ) There is a concern that the lower sag portion (32) and the lower end portion (2a) of the main body (2) and the reverse fold portion (22) may be poorly joined or cause a decrease in barrier properties. e) Because the thickness of the main body blank (20A) and the bottom body blank (30A) becomes smaller, the lower end (2a) and the reversed portion (22) of the main body (2) and the bottom body (3) can be stably The hanging part (32) is joined. f) Since the corner of the corner portion between the bottom (31) and the hanging portion (32) in the outer surface of the bottom body (3) is exposed, the sterilizing liquid is unlikely to remain in the cup when aseptic filling is performed The boundary part between the upper surface of the bottom body (3) of the container (1) and the inner peripheral surface of the body (2). g) Because the laminate (20) (30) which is the material of each blank (20A) (30A) has a metal foil layer (201) (301) and a heat-welding resin layer (202) (302) but does not have a paper layer , So sterilization can be carried out.

The tenth figure shows another aspect of the overlapping portion (21) of the body (2) in the cup-shaped container (1). In the cup-shaped container (1) shown in this figure, among the both end edges of the body blank (20A), the end edge (204) that becomes the inner side of the body (2), and the outer side that becomes the outer side of the body (2) The body of the main body is folded and thermally welded to the surface by overlapping the surface of the blank (20A), and the folded end edge (204) overlaps with the other end edge (205). These (204) (205 ), the heat-fusible resin layers (202) overlapping each other are thermally welded to each other (refer to the tenth and eleventh figures). As shown in the tenth and eleventh figures, the folded width of the folded end edge portion (204) is slightly the same as the overlapping width of the both end edge portions (204) (205), and can also be made different. The thermal welding of the reverse-folded end edge portion (204) and the thermal welding of the two end edge portions (204) (205) are preferably performed simultaneously in one thermal welding step, thereby reducing the number of processes and improving productivity. According to the above aspect, in the superimposed portion (21) of the body (2), the end surface of the metal foil layer (201) is not in contact with the contents stored in the container (1), so corrosion can be suppressed. [Second Implementation Aspect]

Figures 12 and 13 show the cup-shaped container (1X) of the second embodiment of the present invention. This container (1X) is substantially the same as the cup-shaped container (1) of the first embodiment shown in FIGS. 1 to 9 except for the following points. That is, in the case of the cup-shaped container (1X) of this embodiment, the body blank (20B) is a heat-fusible resin layer (201) having a metal foil layer (201) and stacked on both sides of the metal foil layer (201) 202) The laminate (20) without the paper layer is cut into a size with a length twice that of the predetermined length, and folded at the center of the length to overlap, and then the thermally fusible resin layers (202) constituting the overlapping surface are heated to each other Welded together (refer to Figure 13). Next, the two end edges (204B) (205B) of the main body blank (20B) are stacked such that the end edge portion (204B) on the reverse side becomes the inner side of the body (2X). (204B) (205B) The heat-fusible resin layers (202) on the surfaces that overlap each other are thermally welded and joined, and the metal foil layers (201) at both end edges (204B) (205B) pass through the heat of heat fusion The fusible resin layer (202) is laminated (refer to Figure 12). According to the cup-shaped container (1X) described above, two layers of metal foil layers (201) are laminated on the portion other than the overlapping portion (21) of the body (2X), and a total of four layers are laminated on the overlapping portion (21) The metal foil layer (201), the barrier property of the body (2X) is greatly improved, which can further improve the long-term storage of the contents. Moreover, according to the above-mentioned cup-shaped container (1X), in the superposed portion (21) of the body (2X), the end surface of the metal foil layer (201) does not come into contact with the contents stored in the container (1X), which can be suppressed corrosion. [Third Embodiment]

Figures 14 and 15 show the cup-shaped container (1Y) of the third embodiment of the present invention. This container (1Y) is substantially the same as the cup-shaped container (1) of the first embodiment shown in FIGS. 1 to 9 except for the following points. That is, in the cup-shaped container (1Y) of this embodiment, the main body (2) is formed by forming the cylindrical shape by overlapping the two ends of the main body blank (20A) into a palm shape to form a cylindrical shape (refer to the tenth Figure five (a)). More specifically, the two ends of the body blank (20A) that are overlapped in a palm shape are joined by thermally fusing the heat-fusible resin layers (202) to each other, and the metal foils at both ends The layer (201) is laminated through a heat-fusible resin layer (202) that has been thermally welded. The palm joint portion (21Y) of the body (2) is bent to one side so as to overlap with the outer surface of the body (2) and thermally welded to the outer surface (refer to figure 15(b)). According to the cup-shaped container (1Y) described above, in the palm joint portion (21Y) of the body (2), the end surface of the metal foil layer (201) is not in contact with the contents stored in the container (1Y), so corrosion can be suppressed. In addition, according to the above-mentioned cup-shaped container (1Y), since the palm joint portion (21Y) of the body (2) is bent to one side and is thermally welded to the outer surface of the body (2), the sealability and barrier of the portion can be improved Sex. Moreover, according to the cup-shaped container (1Y), the closed palm portion (21Y) does not protrude outward, so the appearance becomes better and easy to take. [Example]

Next, specific embodiments of the present invention will be described, but the present invention is not limited to these embodiments. <Example 1>

On both sides of the aluminum foil (A8021H-O) with a thickness of 100 μm subjected to chemical treatment, apply approximately 3 g/m ² of two-liquid-curable urethane-based adhesive, and dry-stack the non-extended polypropylene with a thickness of 30 μm. Resin film (CPP). Next, a predetermined aging treatment is performed to harden the adhesive, thereby obtaining a laminate. Next, the obtained laminated body is pressed into a predetermined shape, and the blank for the main body and the blank for the bottom body are formed (refer to the fifth and sixth drawings). Next, using the blank for the main body and the blank for the bottom body, a cup-shaped container shown in the first and second drawings was produced in the same procedure as the first embodiment described above, and this was used as Example 1. Since the obtained cup-shaped container uses aluminum foil with a thickness of 100 μm, it is almost free of penetration of oxygen or water vapor, and is a container with good barrier properties. In addition, the dimensions of the cup-shaped container are as follows. (Dimensions of the cup-shaped container) ・Inner diameter of the opening of the upper part of the cup-shaped container: 65mm • Inner diameter of the lower part of the cup-shaped container: 50mm • Width of the flange part: 4mm • Height of the cup-shaped container: 95mm • Cup-shaped container The height of the leg part (reflexed part (22)): 6mm <Example 2>

On both sides of the aluminum foil (A8021H-O) with a thickness of 100 μm subjected to chemical treatment, apply approximately 3 g/m ² of two-liquid-curable urethane-based adhesive, and dry stack the thickness of the linear 30 μm low Density polyethylene resin film (LLDPE). Next, a predetermined aging treatment is performed to harden the adhesive, thereby obtaining a laminate. Next, except for the above, a cup-shaped container was produced in the same manner as in Example 1, and this was designated as Example 2. <Example 3>

On one side of the aluminum foil (A8021H-O) with a thickness of 100 μm subjected to chemical conversion treatment on both sides, apply approximately 3 g/m ^{2 of} a two-liquid-curable urethane-based adhesive, and dry-stack a 30 μm thick non-extended polymer A propylene resin film (CPP) was coated on the other side with about 3 g/m ^{2 of} a two-liquid curing urethane-based adhesive, and a non-stretched polypropylene resin film (CPP) with a thickness of 50 μm was laminated in dry form. Next, a predetermined aging treatment is performed to harden the adhesive, thereby obtaining a laminate. Next, the obtained laminated body is pressed into a predetermined shape, and the blank for the main body and the blank for the bottom body are formed (refer to the fifth and sixth drawings). Next, one end edge of the main body blank is folded back to the 30 μm thick CPP film side with a width of 5 mm and shaped, and then the other end edge is overlapped with the outer side of the folded end edge edge for ultrasonic sealing In this way, a cylindrical body composed of a CPP film with a thickness of 30 μm on the outer surface and a CPP film with a thickness of 50 μm on the inner surface is formed (see FIGS. 10 and 11). Next, except for the above, a cup-shaped container was produced in the same manner as in Example 1, and this was designated as Example 3. <Comparative Example 1>

Instead of aluminum foil (A8021H-O) with a thickness of 100 μm that has undergone chemical conversion treatment on both sides, the board paper with a thickness of 210 μm is used. After the corona treatment is performed on both sides of the board paper, a linear low-density polyethylene resin with a thickness of 20 μm is laminated by extrusion lamination. Except for the film (LLDPE), a laminate was obtained in the same manner as in Example 1. Next, except for the above, a cup-shaped container was produced in the same manner as in Example 1, and this was used as Comparative Example 1. (Sterilizer sterilization test)

In the cup-shaped containers of Examples 1 and 3, water was filled to about 3 mm below the flange portion as the contents. In addition, the following laminate was prepared as a cover material: using a two-component curing type urethane-based adhesive, a biaxially stretched polyethylene terephthalate film (thickness 12 μm) was stretched from the outside by dry lamination method, An aluminum foil (thickness 20 μm) and a non-stretched polypropylene resin film (CPP, thickness 30 μm) constituting a heat seal layer were laminated to form a laminate, and the laminate was pressed into a predetermined shape. Next, the lid material was heat-sealed to the flange portion of each cup-shaped container with an annular sealer, thereby obtaining a filled packaging container. For the cup-shaped containers of Example 2 and Comparative Example 1, a linear low-density polyethylene resin film (LLDPE, thickness 30 μm) was used as the heat sealing layer of the lid material. Filled packaging containers are obtained in the same way. Using a steam sterilizer, the resulting filled packaging containers were sterilized in a sterilizer at 110°C for 30 minutes, and then taken out of the sterilizer after cooling. As a result of the sterilization by the above method, the filled packaging containers of Examples 1 to 3 can be properly sterilized by sterilization without sealing leakage, deformation of the container, delamination of the laminate used for the cup-shaped container, and the like. On the other hand, in the filled packaging container of Comparative Example 1, there was a case where the seal leaked, moisture intruded into the cardboard layer of the laminate used for the cup-shaped container and caused swelling, and the layers of the laminate were peeled off. [Industry availability]

The present invention can be preferably used in, for example, a cup-shaped container having contents such as a flowable food or drink, and a laminate used as a material of the container.

1, 1X, 1Y: cup-shaped container 2. 2X: Ontology 2a: the lower end of the body 21: Overlap 21Y: Close palm 22: Reflexion 23, 23X: flange part 20A, 20B: blank for body 20: laminate 201: metal foil layer 202: heat-sealing resin layer 204: Reversed end edge 205: the other edge 204Bc: End edge of the reverse side 205B: the other end edge 3: substrate 31: bottom 32: Sagging 30A: Blank for substrate 30: laminate 301: Metal foil layer 302: Heat-welding resin layer T1: Total thickness of the heat-fusible resin layer that is thermally welded to both ends of the body blank W1: Overlap width viewed from the thickness direction of the metal foil layers at both end edges of the body blank

The first figure is a perspective view of a cup-shaped container according to the first embodiment of the present invention. The second picture is a vertical cross-sectional view along the line II-II of the first picture. In this figure, the part surrounded by the one-point chain line A is an enlarged display of the part surrounded by the one-point chain line a, and the one-point chain The part surrounded by the line B enlarges the part surrounded by the one-point chain line b. The third (a) diagram is an enlarged cross-sectional view showing the layer structure of the laminate as the material for the main body, and the third (b) is an enlarged cross-sectional view showing the layer structure of the laminate as the material for the bottom. . The fourth figure is a horizontal cross-sectional view showing an enlarged view of the overlapping portion of the body of the cup-shaped container. The fifth (a) diagram is a plan view of the main body blank, and the fifth (b) diagram is a perspective view of the main body formed from the main body blank. The sixth (a) diagram is a top view of the base body blank, and the fifth (b) diagram is a perspective view of the base body formed from the base body blank. The seventh figure is a vertical sectional view showing one of the manufacturing steps of the cup-shaped container. The eighth figure is a partially enlarged vertical sectional view showing a modification of the flange portion of the body of the cup-shaped container. The ninth figure is a partially enlarged vertical cross-sectional view showing a modification of the connecting structure of the main body and the bottom body in the cup-shaped container. Figure 10 is a partially enlarged vertical cross-sectional view showing another aspect of the overlapping portion of the body of the cup-shaped container. FIG. 11 is a horizontal cross-sectional view showing the manufacturing process of the superposed portion of the above-mentioned aspect. FIG. 12 is a horizontal cross-sectional view of a cup-shaped container according to a second embodiment of the present invention. In this figure, the portion surrounded by a one-point chain line C is an enlarged display of the portion surrounded by a one-point chain line c. Figure 13 is a perspective view showing part of the manufacturing steps of the body of the cup-shaped container. Figure 14 is a horizontal cross-sectional view of a cup-shaped container according to a third embodiment of the present invention. In this figure, the portion surrounded by a one-point chain line D is an enlarged display of the portion surrounded by a one-point chain line d. Figure 15 is a horizontal sectional view showing part of the manufacturing steps of the body of the cup-shaped container.

1: Cup-shaped container

2: Ontology

2a: the lower end of the body

21: Overlap

22: Reflexion

23: Flange

20A: Blank for body

20: laminate

201: metal foil layer

202: heat-sealing resin layer

3: substrate

31: bottom

32: Sagging

30A: Blank for substrate

30: laminate

301: Metal foil layer

302: Heat-welding resin layer

Claims (23)

A cup-shaped container, which is composed of a body and a bottom body, the system overlaps and joins the two end edges of the body blank to form a cylindrical shape, and has an outwardly curved convexity at the upper opening edge Rim, and the bottom system forms the bottom of the bottom body into a shape where the outer periphery forms a sag, and the cross section is slightly inverted U-shaped; by joining the outer surface of the bottom sag to the bottom end of the body The inner surface makes the body and the bottom body integrated; among them, The main body blank is formed of a laminate having a metal foil layer and a heat-fusible resin layer laminated on both sides of the metal foil layer but not a paper layer. On both end edges of the main body blank, the The heat-fusible resin layers constituting the mutually overlapping surfaces are thermally welded to each other for joining, and the metal foils at both end edges are laminated through the heat-fusible resin layers that have been thermally welded. The blank for the substrate is formed by a laminate having a metal foil layer and a heat-fusible resin layer deposited on both sides of the metal foil layer as the upper side of the substrate but not having a paper layer. On the inner surface and the outer surface of the drooping portion of the bottom body, the heat-fusible resin layers constituting these surfaces are thermally welded to each other for bonding, and the metal foil layer at the lower end of the body and the metal at the drooping portion of the bottom body The foil layer is laminated through a heat-fusible resin that has been thermally welded. For example, the cup-shaped container of the first item of patent application, in which the bottom system is formed by drawing the bottom body with a blank. For example, in the cup-shaped container of claim 1, the flange portion is folded downward to form a flat shape. For example, in the cup-shaped container of claim 1, the flange part is bent downward and its cross section is formed into a slightly arc shape. For example, in the cup-shaped container of claim 1, the two ends of the main body blank become the inner edge of the main body, and are folded back so as to overlap the surface of the main body blank outside the main body. And thermally welded to the surface. For example, in the cup-shaped container of claim 1, the thickness of the metal foil layer forming the laminate of the body blank is 40 to 200 μm, and the thickness of the metal foil layer forming the laminate of the substrate blank is 40 to 200 μm. For example, in the cup-shaped container of the first patent application, the thickness of the heat-fusible resin layers stacked on both sides of the metal foil layer in the laminate forming the body blank is 5 to 80 μm, respectively, in the laminate forming the substrate blank The thickness of the heat-fusible resin layer deposited on both sides of the metal foil layer as the upper side of the substrate is 5 to 80 μm. For example, in the cup-shaped container of claim 1, the total thickness of the heat-fusible resin layer in which the two ends of the main body blank are thermally fused to each other at the overlapping portion of the main body is 8 to 150 μm. A cup-shaped container as claimed in item 1 of the patent application, wherein the overlapping width of the metal foil layers at both end edges of the main body blank at the overlapping portion of the main body is 2 to 10 mm. For example, the cup-shaped container of claim 1 of the patent application, in which the body further has a reverse folding portion, which is folded inwards in such a way as to enclose the lower portion of the bottom body from the opening edge of the lower end; The laminate forming the blank for the base body further has a heat-fusible resin layer, which is laminated on both sides of the metal foil layer to become the surface under the base body; The reversed portion of the body and the drooping portion of the bottom body are joined by thermally fusing the heat-fusible resin layers that constitute the mutually overlapping surfaces, and the heat-fusible resin layer that has been thermally welded has a built-in reaction Folded metal foil layer. For example, the cup-shaped container of claim 10, in which the laminate forming the base body blank is laminated on both sides of the metal foil layer to become a heat-sealing resin layer on the lower side of the base body, and has a thickness of 5 to 80 μm. A cup-shaped container, which is composed of a body and a bottom body, the system overlaps and joins the two end edges of the body blank to form a cylindrical shape, and has an outwardly curved convexity at the upper opening edge The bottom part of the bottom system is formed by forming a sag on the outer periphery of the bottom body blank, and its cross section is slightly inverted U-shaped; by joining the outer surface of the lower part of the bottom body to the inner surface of the lower end of the body And the body and the bottom body become one; among them, The blank for the main body is formed by cutting a laminate with a metal foil layer and a heat-fusible resin layer laminated on both sides of the metal foil layer but without a paper layer into a size having a length twice that of a predetermined length, and folding in half at the center of the length Overlap, and then thermally fuse the resin layers that form the overlap surface to each other; the two ends of the body blank are laminated so that the edge of the reverse side becomes the inside of the body, and by The thermally fusible resin layers constituting the mutually overlapping surfaces are thermally welded and joined, and the metal foil layers at both end edges are laminated through the thermally fusible resin layers that have been thermally welded; The blank for the substrate is formed of a laminate having a metal foil layer and a heat-fusible resin layer laminated on both sides of the metal foil layer to become the upper side of the substrate but not having a paper layer, and the inner part of the lower end of the body The outer surfaces of the surface and the drooping portion of the bottom body are joined by thermally fusing the heat-fusible resin layers constituting these surfaces, and the metal foil layer at the lower end of the body and the metal foil layer at the lower portion of the bottom body Laminated through heat-fusible resin through heat welding. For example, the cup-shaped container in the 12th range of the patent application, in which the bottom system is formed by drawing the bottom body with a blank. For example, the cup-shaped container of claim 12 of the patent application, in which the flange portion is folded down and formed into a flat shape. For example, in the cup-shaped container of claim 12, the flange part is bent downward and its cross section is formed into a slightly arc shape. For example, the cup-shaped container of claim 12 of the patent application, wherein the body further has a reversing portion, which is folded inwards in such a way that the lower portion of the bottom body is enclosed from the opening edge of the lower end, The laminate forming the blank for the base body further has a heat-fusible resin layer, which is laminated on both sides of the metal foil layer to become the surface under the base body, The reversed portion of the body and the drooping portion of the bottom body are joined by thermally fusing the thermally fusible resin layers constituting the mutually overlapping surfaces. Part of the metal foil layer. A cup-shaped container, which is composed of a body and a bottom body, the system makes the two ends of the main body blank overlap each other into a palm shape and are joined, thereby forming a cylindrical shape, and the outer edge of the upper end has an outward The curved flange part, the bottom system is formed in such a way that the outer periphery of the bottom body blank forms a sag, and its cross section is slightly inverted U-shaped; by joining the outer surface of the lower part of the bottom body to the lower end of the body The inner surface makes the body and the bottom body integrated; among them, The blank for the body is formed of a laminate having a metal foil layer and a heat-fusible resin layer deposited on both sides of the metal foil layer as the inner side of the body, but not having a paper layer, and the blank for the body is stacked in a palm shape The edges of both ends are joined by thermally fusing the thermally fusible resin layers to each other, and the metal foil layers at the edges of the both ends are laminated through the thermally fusible resin layers that are thermally welded; The blank for the substrate is formed by a laminate having a metal foil layer and a heat-fusible resin layer formed on both sides of the metal foil layer as the upper side of the substrate but not having a paper layer, and the inner surface of the lower end of the body And the outer surface of the drooping portion of the bottom body is joined by thermally fusing these heat-fusible resin layers to each other, and the metal foil layer at the lower end of the body and the metal foil layer at the drooping portion of the bottom body pass through heat Laminated heat-fusible resin laminate. For example, the cup-shaped container in the 17th range of patent application, in which the bottom system is formed by drawing the bottom body with a blank. For example, in the cup-shaped container of claim 17, the laminated body forming the blank for the main body further has a heat-fusible resin layer stacked on both sides of the metal foil layer to become the outer side of the main body, The palm joint portion of the body is bent to one side so as to overlap with the outer surface of the body, and is thermally welded to the outer surface. For example, in the cup-shaped container of claim 17, the flange portion is folded down to be flat. The cup-shaped container according to any one of the items 17 of the patent application scope, in which the flange portion is bent downward and the cross section is formed into a slightly circular arc shape. For example, the cup-shaped container of claim 17 of the patent application, wherein the body further has a reversal portion, which is folded inwards in such a way as to enclose the lower portion of the bottom body from the opening edge of the lower end, The laminate forming the blank for the base body further has a heat-fusible resin layer, which is laminated on both sides of the metal foil layer to become the surface under the base body, The reversal part of the main body and the drooping part of the bottom body are formed by thermally fusing the thermally fusible resin layers constituting the mutually overlapping surfaces, and the thermally fusible resin layer after the thermal fusion has a built-in reflexed part Metal foil layer. A layered body for a cup-shaped container, which is a layered body used as a material for a main body blank and a bottom body blank in the following cup-shaped container. The cup-shaped container is composed of a main body and a bottom body. In this system, the two end edges of the main body blank are stacked and joined to each other, or overlapped to form a palm shape and joined, thereby forming a cylindrical shape, and having an outwardly curved flange portion at the upper opening edge, the bottom system makes the bottom body It is formed by forming the hanging part of the outer periphery of the blank, the cross section of which is slightly inverted U-shaped, and by joining the outer surface of the lower part of the bottom body to the inner surface of the lower end of the body, the body and the bottom body are integrated; This laminate has a metal foil layer and a heat-fusible resin layer laminated on at least one of the two surfaces of the metal foil layer, but does not have a paper layer.

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