TW201927554A - Laminated body for molding container, molded container and packaging body, and method for manufacturing molded container and packaging body capable of molding a container with a laminated body having a metal foil layer and an outer resin film layer - Google Patents

Abstract

An object of the present invention is to provide a container, which has an excellent appearance of mat outside surface, molded by a laminated body having a metal foil layer and an outer resin film layer at a low price. The solution of the present invention is a laminated body 10 for molding a container according to the present invention comprises a metal foil layer 11 and a single or a plurality of outer resin film layers 12 which are laminated on one of two sides of the metal foil layer that serves as the outer side surface of the container. The outer resin film layer of the single layer or the outer resin film layer of the plurality of layers is formed of a resin composition having a polyolefin resin and an olefin-based elastomer as major ingredients. An outer surface of the outer resin film layer has a gloss of 0.5 to 30%.

Description

Laminated body for forming container, formed container and package, and molded container and method for manufacturing package

The present invention relates to a laminate used as a material for sealing a molded container such as a packaged food, a molded container formed by molding the same laminate, and a package obtained by applying a lid to the same molded container filled with the contents. The body, more specifically, is a laminate, a shaped container, and a package for a molded container having a matte outer surface. Further, the present invention relates to a molded container having a matte outer surface and a method of manufacturing the package.

It is known that the laminated body forms a cup-shaped shaped container as a container capable of long-term storage of packaging such as water alpaca, jelly, weaning food, food for care, and the like, and the laminated body is provided with a metal foil layer composed of aluminum foil or the like and laminated thereon. Among the both surfaces of the metal foil layer, a single layer or a plurality of outer resin film layers on the outer surface of the container (see Patent Document 1 below).

In the field of packaging, in order to give a high-grade appearance, there is a case where a container having a matte outer surface is used. For example, in the following Patent Document 2, a stationery clip for a stationery having a matte outer surface is produced by using an embossed polypropylene resin film. Further, Patent Document 3 listed below discloses a hard coat film for molding in which a hard coat layer having a matte outer surface is formed on the outermost layer. [Prior Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Laid-Open Patent Publication No. Hei No. Hei. No. Hei. No. Hei. No. Hei. No. Hei.

[Problems to be solved by the invention]

However, when the laminate of the outer resin film layer composed of the imprinted film of Patent Document 2 is formed into a cup shape, the imprinted film is formed by stretching during molding, which causes streaking on the outer surface of the matte film. Damage to the appearance. Further, if an imprinted film is used, there is a problem that the cost is high. In the case where the laminate of the outer resin film layer composed of the film of the matte coating layer of Patent Document 3 is formed into a cup shape, there is a problem that cracks occur in the coating layer or the coating layer is peeled off. Further, in the case where the matte coating layer is formed, there is also a problem that the cost is high.

The present invention has been made in view of the above problems, and an object thereof is to provide a container formed by laminating a metal foil layer and an outer resin film layer at a low cost, which has an excellent appearance of a matte outer surface. [Means for solving the problem]

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

1) A laminate for forming a container, comprising a metal foil layer and a laminate for forming a container in which a single layer or a plurality of outer resin film layers are laminated on both sides of the metal foil layer, wherein the single layer The outermost layer of the outer resin film layer or the plurality of outer resin film layers is composed of a resin composition mainly composed of a polyolefin resin and an olefin-based elastomer, and the outer surface of the outer resin film layer has a gloss of 0.5 to 30%.

2) The laminate for forming a container according to the above 1), wherein a printing layer is formed wholly or partially between the metal foil layer and the outer resin film layer; or by adding a coloring component to the outer resin film layer A predetermined mark or decoration is shown on the outer surface of the outer resin film layer.

3) A molded container obtained by forming the laminated body for forming a container of the above 1) or 2) into a cup shape, and having a flange at the periphery of the opening.

4) A package in which a cover is joined to a flange of a molded container such as the above 3) filled with a content to cover an opening of the molded container.

5) A method of producing a molded container, which is a method for producing a molded container according to the above 3), comprising: a step of forming a layered body of the above-mentioned 1) or 2) for forming a container into a cup shape; and a single layer The temperature of the outermost resin film layer or the resin of the outermost resin film layer of the outer layer is higher than the softening point of the resin, and the heat treatment of the molded container obtained by the above-mentioned step is performed.

6) A method of producing a package, which is a method of manufacturing a package according to the above 4), comprising: joining a cover to a flange of a molded container filled with a content as in the above 3) to cover an opening of the molded container And a step of heat-treating the package obtained by the above step at a temperature equal to or higher than a softening point of the resin of the outermost resin film layer of the single layer or the outermost resin film layer of the plurality of layers.

7) The method for producing a package according to the above 6), wherein the step of subjecting the package to heat treatment is carried out by a retort sterilization treatment. [Effects of the Invention]

In the laminate for forming a container according to the above 1), the outermost layer of the outer resin film layer of the single layer or the outer resin film layer of the plurality of layers is a resin composition mainly composed of a polyolefin resin and an olefin elastomer. Since the glossiness of the outer surface of the outer resin film layer is 0.5 to 30%, the outer surface of the molded container obtained by molding the same laminate is matte. Next, in the case of the laminated body of the above 1), the laminated body on the outer surface of the outer resin film layer formed by the embossed film is not stretched due to stretching at the time of molding, and the outer surface is caused to have streaks. Further, the laminate of the outer surface of the outer resin film layer composed of the film having the matte coating layer does not cause cracks in the coating layer, and the coating layer does not peel off, so that it is not costly. Therefore, according to the laminated body for forming a container of the above 1), a molded container having a matte outer surface having a good appearance can be obtained at low cost. Here, "glossiness" is measured in accordance with JIS Z8741-1997 (mirror gloss-measurement method, method 3 (incident angle: 60 degrees)).

According to the above-mentioned 2), the laminated body for forming a container can be formed by integrally or partially forming a printing layer between the metal foil layer and the outer resin film layer, or by adding a coloring component to the outer resin film layer. The outer surface of the film layer exhibits a predetermined mark or decoration, so that the shaped container formed by molding the same laminate has a more excellent appearance.

The molded container according to the above 3) has a high-grade appearance because it has a matte outer surface having a good appearance.

The package according to the above 4) has a high-grade feeling by a container having a matte outer surface having a good appearance.

According to the method for producing a molded container of the above 5), the following effects can be obtained. That is, in the case where the layered body for forming a container of the above 1) or 2) is formed into a cup shape, a part of the outer surface of the obtained shaped container, specifically, for example, a bottom wall and a peripheral wall in the same outer surface The corner portion of the boundary is white turbid, causing the metallic color of the surface of the metal foil layer or the marking of the printed layer to be concealed from being seen, which may impair the appearance. The reason for this is considered to be because the matrix and the olefin of the polyolefin resin (for example, a block polypropylene resin) in the outermost layer among the outer resin film layer of the single layer or the outer resin film layer of the plurality of layers when the above laminated body is formed. A hole (void) is formed at the interface of an elastomer (for example, an elastomer composed of an ethylene-propylene copolymer), and a part of the outer surface of the shaped container, particularly the outer surface of the shaped container, is caused by the difference in refractive index between the resin portion and the hole. In the corner portion where the degree of deformation is large due to the formation, it appears to be white and turbid. Then, as described above, when the forming container is heat-treated at a temperature equal to or higher than the softening point of the outermost resin layer of the single-layer outer resin film layer or the plurality of outer resin film layers, the pores formed in the same layer are formed. Disappeared, and then the white turbidity disappeared. Therefore, according to the method for producing a molded container according to the above 5), it is possible to surely obtain a molded container having a matte outer surface having a good overall appearance. Here, the "softening point" is a "Vicat softening point" measured in accordance with JIS-K7206:2016 (measurement condition A50).

According to the method for producing a package according to the above 6), even if a part of the outer surface of the molded container is turbid, a heat treatment of the package is performed by a single-layer outer resin film layer or a plurality of outer resin film layers. The temperature above the softening point of the resin at the outermost layer can eliminate the white turbidity, so that a package having a molded container having a matte outer surface having a good overall appearance can be obtained.

According to the manufacturing method of the package of the above 7), since the step of heat treatment performed on the package is performed by the retort sterilization treatment, the outer surface of the molded container can be efficiently made without increasing the number of steps The resulting white turbidity disappears.

Embodiments of the present invention will be described below with reference to the first to third figures.

The first figure shows the layer structure of a laminate for forming a container according to an embodiment of the present invention. The laminated body (10) of the drawings includes a metal foil layer (11) and an outer resin film layer (12) laminated on the outer surface of the container (2) on both surfaces of the metal foil layer (11). Further, the laminated body (10) of the present embodiment includes an inner resin layer (13) laminated on the inner surface of the container (2) on both surfaces of the metal foil layer (11).

As the metal foil constituting the metal foil layer (11), an aluminum foil, an iron foil, a stainless steel foil, a copper foil or the like can be used, but an aluminum foil is preferably used. In the case of the aluminum foil, it may be either a pure aluminum foil or an aluminum alloy foil, and may be either soft or hard. For example, if the iron content is 0.3 to 1.5% by mass, the A8000 series classified by JIS H4160 (especially The annealed soft material (O material) of A8079H and A8021H) is suitable for use because of its excellent formability. For the single side or both sides of the metal foil layer (11), a bottom treatment such as chemical conversion treatment is required as needed. Specifically, for example, after applying any one of the following 1) to 3) to the surface of the metal foil subjected to the degreasing treatment, chemical conversion treatment is performed by drying to form a film; 1) phosphoric acid, chromic acid, At least one compound is selected from the group consisting of a mixture of a metal salt of a fluoride and a non-metal salt of a fluoride; 2) comprising phosphoric acid, an acrylic resin, and at least one resin selected from the group consisting of chitosan a group of a derivative resin and a phenol resin, at least one compound selected from the group consisting of a mixture of chromic acid and a chromium (III) salt; 3) comprising phosphoric acid, an acrylic resin, and at least one The resin is selected from the group consisting of a chitosan derivative resin and a phenolic resin, at least one compound is selected from the group consisting of chromic acid and chromium (III) salts, and at least one compound is selected from the group consisting of fluoride metal. An aqueous solution of a mixture of salts and non-metal salts of fluoride. By the above-described chemical conversion treatment layer formed on the metal foil (11) of the film surface, the chromium deposition amount (per side) is preferably ^{0.1mg / m 2 ~ 50mg / m} 2, particularly preferably 2mg / m ² ~20mg/m ² . The thickness of the metal foil layer (11) is preferably from 30 to 200 μm, more preferably from 50 to 150 μm. By the above range, sufficient barrier properties and moldability can be obtained.

The outer resin film layer (12) is a single layer or a plurality of layers (shown as a single layer in the first figure). The outermost surface of the outer surface of the molded container (2), that is, the outermost resin film layer (12) of the single layer or the outer resin film layer (12) of the plurality of layers, is composed of a polyolefin resin and an olefin elastomer. It is composed of a resin composition as a main component. Further, the outer surface (12a) of the outer resin film layer (12) is composed of the above layer, and its gloss (gloss value) is 0.5 to 30%. In the above resin composition, the polyolefin resin may, for example, be a block polypropylene resin (PP-B), a homopolypropylene resin (PP-H), a random polypropylene resin (PP-R), or a high-density polyethylene resin ( HDPE), linear low density polyethylene resin (LLDPE), low density polyethylene resin (LDPE), and the like. Further, examples of the olefin-based elastomer include an ethylene-propylene copolymer, an ethylene-butene copolymer, and an ethylene-propylene-1-butene copolymer. The monomer other than ethylene has a content of 5 to 40% by mass and a melting point of less than 90 °C. Further, the above layer may also contain a polyolefin component having a melting point of 135 ° C or higher. Further, in order to adjust the glossiness of the outer surface of the molded container (2), an organic or inorganic fine particle filler may be added to the above layer in accordance with the demand. When the outer resin film layer (12) is a plurality of layers, the layer other than the outermost layer may be a polyolefin resin such as polypropylene resin (PP), polyethylene resin (PE), nylon 6 (PA6), or nylon 66 (PA66). Polyamide resin (PA), polyethylene terephthalate resin (PET), polybutylene terephthalate resin (PBT), polyethylene naphthalate resin (PEN) A polyester resin (PEs) or the like is formed. The thickness of the outer resin film layer (12) is preferably from 5 to 100 μm, more preferably from 15 to 80 μm. In the outer resin film layer (12), a lubricant may be added in order to obtain a molded container (2) having an appropriate depth. Further, as a substitute for the lubricant, in addition to the lubricant, a lubricating oil such as eucalyptus oil or rapeseed oil may be applied to the surface of the laminated body (10) at the time of molding. The laminate of the metal foil layer (11) and the outer resin film layer (12) can be carried out by a dry build-up method through the adhesive layer (14). As the adhesive layer (14), for example, a two-liquid-curing polyester-polyurethane resin-based adhesive or a polyether-polyurethane resin-based adhesive can be used.

On the inner surface of the outer resin film layer (12), the printing layer (15) is entirely or partially formed by gravure printing or the like. By means of the printing layer (15), a predetermined marking or decoration can be displayed on the outer surface of the shaped container (2). The printed layer (15) is not particularly limited. However, in the sense that the matte outer surface (12a) is emphasized and has a high-grade feeling, the base color is preferably a dark color such as black. Further, instead of the printed layer (15), a coloring component such as a pigment may be added to the outer resin film layer (12).

Since the inner resin layer (13) constitutes the inner surface of the container (2) (including the upper surface of the flange portion (23)), it is made of, for example, a polypropylene resin (PP) film or a polyethylene resin (PE) having heat fusion properties. A general-purpose film such as a film or a composite sheet to which the films are bonded. The thickness of the film or composite sheet constituting the inner resin layer (13) is preferably from 100 to 500 μm, more preferably from 200 to 400 μm. The laminate of the film or composite sheet constituting the metal foil layer (11) and the inner resin layer (13) is permeable to the adhesive layer (16) by a dry build-up method. As the adhesive layer (16), for example, a two-liquid-curing polyester-polyurethane resin-based adhesive or a polyether-polyurethane resin-based adhesive can be used. Further, instead of the above film or composite sheet, the inner resin layer (13) may be formed of a coating layer of an epoxy resin or a shellac resin.

In the second drawing, a method of manufacturing a package body in which the molded container formed by the above-mentioned laminated body and the lid body are used to seal and package the contents of the food or the like is displayed.

First, the above laminated body (10) is cut into a predetermined shape and size, and formed into a cup shape. The formation of the laminated body (10) can be carried out by cold rolling forming such as deep drawing or drawing. Thus, the shaped container (2) shown in the second (a) view can be obtained. The forming container (2) comprises: a bottom wall (21); a peripheral wall (22) rising from a periphery of the bottom wall (21); and a horizontal annular flange (23) from the upper edge of the peripheral wall (22) Extending radially outward. Here, a part of the outer surface of the formed shaped container (2), particularly the corner portion of the boundary between the bottom wall (21) and the peripheral wall (22), becomes cloudy, which may cause color or printing on the surface of the metal foil layer (11). The marking of layer (15) is concealed and cannot be seen. This is considered to be because the formed laminate (10), the matrix of the polyolefin resin and the olefin-based elastomer in the outermost layer among the outer resin film layer (12) of the single layer or the outer resin film layer (12) of the plurality of layers. The interface creates voids (voids), and because of the difference in refractive index between the resin portion and the holes, the corner portion which is deformed to a large extent due to the formation in the outer surface of the shaped container (2) appears to be cloudy.

Next, as shown in the second (b), after the molded container (2) is filled with the content (C) of the food or the like, the peripheral portion of the lower surface of the lid (3) is welded to the convex portion of the molded container (2). The upper surface of the edge (23). The lid body (3) may include, for example, a metal foil layer made of an aluminum foil or the like, and a heat-fusible resin film layer formed of a polypropylene resin (PP) film, a polyethylene resin (PE) film, or the like, and The lower surface of the metal foil layer is laminated; and the outer resin film layer is formed of a polyester resin (PS) film or a polyimide resin (PA) film or the like, and is laminated on the upper surface of the metal foil layer. Further, the opening tab (31) in the lid body (3) is integrally molded to a part of the outer peripheral edge thereof so as to protrude outward from the flange (23) of the molding container (2) (see the third drawing). The means for thermally welding the lid body (3) to the flange (23) of the forming container (2) is not particularly limited, and for example, the surface of the upper surface of the flange (23) and the lower surface of the lid body (3) can be made. The parts are superposed and heated to a predetermined temperature (for example, about 180 ° C), and the overlapping portions are heated for a predetermined time while applying a predetermined pressure.

Next, the package (4) obtained in the above step is introduced into a distillation sterilization device (5) to carry out a distillation sterilization treatment. This distillation sterilization treatment step also serves as a heat treatment step for eliminating the white cloud generated in a part of the outer surface of the molded container (2). The heating temperature of the package (4) in this step is higher than the softening point of the resin of the outermost layer among the outer resin film layer (12) of the single layer of the laminate (10) or the outer resin film layer (12) of the plurality of layers. temperature. The heating temperature is more preferably a temperature above the softening point of the resin and less than the melting point. By setting the heating temperature to a temperature higher than the softening point of the resin, the strain of the laminated body (10) due to the molding can be alleviated, and the pores can be easily filled. Further, by making the heating temperature lower than the temperature of the melting point of the resin, the shape of the molded container (2) can be maintained after heating. Specifically, it is about 80 ° C or higher, preferably about 100 to 180 ° C. The heating time is about 5 minutes to 3 hours. Further, in addition to the retort sterilization treatment, of course, the heat treatment step may be performed by, for example, heat treatment in an oven or by immersion in warm water or the like. In the case of heat treatment other than the retort sterilization treatment, only the molding container (2) may be subjected to heat treatment in the step before the package (4).

The third figure shows the package (4) after the retort treatment. Among the outer surfaces of the molded container (2), the white turbidity originally formed at the corner portion or the like disappears. This is considered to be because the forming of the container (2) is sufficiently heated by the retort sterilization treatment, the strain of the layered body (10) caused by the molding is alleviated, and the pores are filled. In this way, the package (4) is provided with a molded container (2) having a matte outer surface having a good overall appearance, and can provide a high-quality feeling to a person in need thereof. [Examples]

Next, an embodiment of the present invention will be described. However, the invention is not limited to the following embodiments. <Example 1>

As the metal foil layer, an aluminum foil formed of A8021H-O classified according to JIS H4160 was prepared, and a chemical conversion treatment liquid composed of polyacrylic acid, a trivalent chromium compound, water, and an alcohol was applied to both surfaces thereof, and the mixture was subjected to a chemical conversion treatment liquid at 180 ° C. It was dried, and chemical conversion treatment was carried out so that the amount of chromium adhesion was 10 mg/m ² , and the thickness thereof was 120 μm. As the outer resin film layer, a single-layer non-stretch polypropylene resin film (CPP) having a thickness of 50 μm was prepared, and a black ink (manufactured by DIC GRAPHICS, trade name: PANACEA CVL-SP special ink 805) was used in the gravure printing machine. A plain printed layer is formed on the entire surface of one side. Further, as the inner resin layer, a composite sheet of a high-density polyethylene resin film (HDPE) having a thickness of 300 μm and a polypropylene resin film (PP) (layer ratio: 50 μm/250 μm) was prepared. In the above non-stretched polypropylene resin film (CPP), the resin composition is a compound in which 10% by mass of ethylene-butene-1 copolymer rubber is added to the block polypropylene resin (PP-B) (softening point = 97) °C). Next, a two-liquid-curing polyester-polyurethane resin-based adhesive and a dry-laid non-stretch polypropylene resin film (CPP) are used on one surface of the aluminum foil so that the printed layer is inside. On the other side of the aluminum foil, a two-liquid-curing polyester-polyurethane resin-based adhesive was used so that the polypropylene resin film side was inside, and the composite sheet was dry laminated at 40 ° C. The substrate was cured for 5 days, thereby producing a laminate for forming a container.

Then, a small amount of decane is applied to both sides of the blank sample which has been cut into a predetermined shape, and then the deep mold is formed by using a mold composed of a male mold and a mother mold. A round cup-shaped container having a flange (bottom diameter: 52 mmφ, opening diameter: 65 mmφ, height: 30 mm, flange width: 8 mm).

On the other hand, a two-liquid-curing polyester-polyurethane resin-based adhesive is used on one side of an aluminum foil having a thickness of 20 μm formed of A1N30H-O classified according to JIS H4160, and a dry laminated layer having a thickness of 12 μm is used. A polyethylene terephthalate resin (PET) film is used as the outer resin layer, and on the other side of the aluminum foil, a two-liquid hardening type polyester-polyurethane resin adhesive is used, and the dry laminated layer has a thickness of 30 μm. A linear low-density polyethylene resin (LLDPE) film was cured as a heat-fusible resin layer in an environment of 40 ° C for 5 days to prepare a laminate for a lid body. The obtained laminated body is cut into a desired shape and size by fitting a flange to prepare a lid body with a tongue for opening.

After 70 ml of water was placed in the container, the lid was superposed on the upper surface of the flange of the container so that one side of the linear low-density polyethylene resin (LLDPE) film was in contact with it, and then heated to The 200 ° C annular heating plate (outer diameter 90 mmφ, inner diameter 74 mmφ) was pressed against the overlapping faces with a pressing force of 150 kgf for heat sealing (heat sealing). Thereby, the package of Example 1 was obtained. <Comparative Example 1>

A three-layer structure having a thickness of 30 μm formed by sequentially laminating a random polypropylene resin (PP-R) film, a block polypropylene resin (PP-B) film, and a random polypropylene resin (PP-R) film The polypropylene resin film (CPP) was used as the outer resin film layer for the laminate of the molded container, and the package was produced in the same manner as in the first embodiment, and this was designated as Comparative Example 1.

With respect to the package of Example 1 and Comparative Example 1, when the glossiness of the outer surface of the container was measured by a glossiness measuring instrument (micro-tri-shin S manufactured by BYK Gardner Co., Ltd.), it was 6% in Example 1, and in Comparative Example 1, 100%.

Moreover, the appearance of the molded container of the package of Example 1 and the comparative example 1 was visually observed. In Example 1, severe whitening was observed in the corner portion of the boundary between the bottom wall and the peripheral wall among the outer surfaces of the shaped container. On the other hand, in Comparative Example 1, no whitening was observed on the outer surface of the molded container.

Then, the package of Example 1 was heat-treated at a heating temperature of 100 ° C for 60 minutes in a constant temperature and humidity oven (Model PL-1J manufactured by ESPEC Co., Ltd.), and then taken out from the oven and visually observed. When the outer surface of the container was formed, although it was slightly whitened at the corner portion, most of it disappeared. Furthermore, the package of Example 1 was subjected to heat treatment at a heating temperature of 120 ° C for 30 minutes by a distillation sterilization apparatus (RCS-40 RTGN), and then taken out from the same apparatus and visually observed. When the outer surface of the container is closed, the whitening of the corner portion completely disappears. [Industrial availability]

The present invention is for sealing packaged foods and the like, which can be preferably used for a shaped container having a matte outer surface having a good appearance.

(2) ‧ ‧ forming containers

(21) ‧‧‧ bottom wall

(22) ‧‧‧Walls

(23) ‧‧‧Flange

(3) ‧ ‧ cover

(31) ‧‧‧Opening tongue

(4) ‧‧‧Package

(5)‧‧‧Distillation and sterilization equipment

(10) ‧‧‧Laminated bodies for forming containers

(11)‧‧‧metal foil layer

(12)‧‧‧Outer resin film

(12a) ‧‧‧ outer surface of the outer resin film

(13)‧‧‧ Inner resin layer

(14) ‧‧‧Adhesive layer

(15)‧‧‧Printing layer

(16) ‧‧‧Adhesive layer

(C) ‧ ‧ ‧ contents

The first figure shows a partially enlarged cross-sectional view of a layer structure of a laminate for forming a container according to an embodiment of the present invention. The second drawing shows a vertical sectional view of a method of manufacturing a package according to an embodiment of the present invention in order of steps. The third figure is a perspective view of a package manufactured in the same manner.

Claims (7)

A laminate for forming a container, comprising a metal foil layer and a single layer or a plurality of outer resin film layers laminated on both sides of the metal foil layer as outer sides of the container, wherein the outer resin layer of the single layer or the outer resin of the plurality of layers The outermost layer among the film layers is composed of a resin composition containing a polyolefin resin and an olefin-based elastomer as a main component, and the outer surface of the outer resin film layer has a gloss of 0.5 to 30%. The laminate for forming a container according to the first aspect of the invention, wherein the printed layer is formed wholly or partially between the metal foil layer and the outer resin film layer, or the colored portion is added to the outer resin film layer. A predetermined mark or decoration is displayed on the outer surface of the outer resin film layer. A molded container obtained by forming a laminated body for a molded container according to the first aspect of the invention, and having a flange at a periphery of the opening. A package for joining a cover to a flange of a shaped container filled with a content as claimed in claim 3 to cover an opening of the shaped container. A method of manufacturing a shaped container, which is a method of manufacturing a shaped container according to claim 3, comprising: a step of forming a layered body for forming a container as in the first aspect of the patent application; and The temperature of the outermost resin film of the layer or the softening point of the resin of the outermost layer among the outer resin film layers of the plurality of layers is a step of heat-treating the molded container obtained by the above step. A method of manufacturing a package, which is a method of manufacturing a package according to claim 4, comprising: bonding a cover to a flange of a molded container filled with a content as claimed in claim 3 to cover a step of forming an opening of the container; and a step of heat-treating the package obtained by the above step at a temperature equal to or higher than a softening point of the resin of the outermost resin film layer of the single layer or the outermost resin film layer of the plurality of layers. The method for producing a package according to claim 6, wherein the step of subjecting the package to heat treatment is performed by a retort sterilization treatment.