TW201704104A - Container and packaging body controlling the manufacturing cost since there is no need to allow the flange portion to curl or to hide an end surface - Google Patents

Abstract

The invention provides a container composed of a composite plate formed with a metal foil layer having excellent insulation and a packaging body using the container. Fingers of consumers may not feel uncomforting, unhappy or pain due to cut burr produced at the end surface of the flange portion. The container 2 is composed of the cup shape formed by the composite plate 20 of resin film layers 202, 203 laminated over two surfaces of the metal foil layer 201. The periphery of the opening has a flange portion 21. The front end of the cut burr 201a produced at the end surface of the flange portion 21 is toward the opening side of the container 2.

Description

Container and package

The present invention relates to a container in which a composite sheet having a metal foil layer and a resin film layer is formed into a cup shape, and a package body using the container.

In the specification and the scope of the patent application, the term "cut burrs" refers to a metal formed on the cut surface, that is, the end surface of the flange portion of the container, before or after the formation of the composite sheet. Foil protrusions.

As a container for packaging a content that needs to be stored for a long period of time, it is known that a metal foil layer such as an aluminum foil excellent in gas, moisture, light, and the like is formed into a cup shape with a composite sheet of a resin film layer stacked on one or both sides thereof. And the constituents.

The container has a flange portion at the periphery of the opening thereof, and is thermally fused, for example, by a composite plate having an aluminum foil layer and a heat-fusible resin film layer stacked on the inner surface thereof on the flange portion of the container filled with the contents. The formed cover material can form a package (for example, refer to the following Patent Documents 1 to 3).

[Previous Technical Literature]

[Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. Hei 3-14476

[Patent Document 2] Japanese Patent Laid-Open No. 4-147825

[Patent Document 3] Japanese Patent Laid-Open No. Hei 6-345123

In the above-described container, the composite plate is usually formed into a cup shape, and then the peripheral portion of the flange portion is cut (trimmed) so that the flange portion has a predetermined size. At this time, the clearance of the lower mold on the dressing device is minimized, and the cut burr is prevented from being formed on the cut surface, that is, at the end surface of the flange portion, but even if the front end is sharp, the cut burr is generated.

For this reason, for example, when the consumer peels off the cover material of the package and unseals, the cut burr of the end face of the flange portion of the container may hit the finger and feel uncomfortable or unpleasant. Furthermore, if the end face is strongly held, the fingers may feel pain.

Further, it is also known that the flange portion of the container is curled and the end surface is not exposed. However, in order to curl the flange portion, the shape of the molding die is complicated, and since the number of steps is also increased, there is a cost. The problem of increase.

SUMMARY OF THE INVENTION An object of the present invention is to provide a container comprising a composite sheet having a metal foil layer having excellent barrier properties at a low cost, and a package body using the same, which is a cut by a consumer's fingers or the like which is not caused by the end face of the flange portion. Broken hair and feel uncomfortable, unpleasant or painful.

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

1) A container in which a composite sheet in which a resin film layer is laminated on at least one side of a metal foil layer is formed into a cup shape, and a peripheral edge has a flange portion, and a front end of the flange portion is cut toward the front end of the container The open side.

2) The container according to the above 1), wherein the composite sheet has a resin film layer stacked on the inner surface of the metal foil layer, the resin film layer having a thickness greater than a thickness of the metal foil layer.

3) The container according to 2) above, wherein the resin is stacked on the inner surface of the metal foil layer The film layer is composed of a composite film in which two or more resin films are stacked, and the thickness of the resin film on the side of the metal foil layer in the composite film is larger than the thickness of the metal foil layer.

4) The container according to the above 3), wherein the thickness of the resin film on the side of the metal foil layer in the composite film is larger than the height of the cut burr.

(5) The container according to the above 3) or 4), wherein a notch for opening is formed on the flange portion, which has a resin film penetrating the innermost layer side of the composite film, and a depth of the upper portion of the resin film reaching the outer side thereof .

The container according to any one of the above 3, wherein the composite film has a polyethylene resin film on the innermost layer side and a polypropylene resin film stacked on the outer side.

The container according to any one of the above 1 to 6, wherein the metal foil layer is composed of an aluminum foil.

8) A package in which a lid member is thermally fused to a flange portion of the container, and an opening of the cup-shaped container filled with the contents is covered, and the container is a container according to any one of the above 1) to 7) Composition.

9) The package according to the above 8), wherein the resin is retained in a hanging shape at a peripheral portion of the underside of the lid member by heat fusion, and the resin retaining front end has the same as the front end of the cut burr, or comes more than The height of the horizontal position below.

In the case of the container of the above 1), since the end before the cutting burr is formed on the end surface of the flange portion toward the opening side of the container, the lid member is thermally fused to the package body after the contents are filled. Next, the front end of the burr is covered by the cover material. Therefore, when the consumer unpacks the cover material, the fingers and the like do not feel uncomfortable due to the burrs of the end faces of the flange portions. Pleasant or painful, and can be opened comfortably.

Further, in the case of the container of the above 1), since it is not necessary to curl the hidden end surface of the flange portion, the manufacturing cost can be suppressed.

When the container of the above 2) is used, since the thickness of the resin film layer on the inner surface side of the metal foil layer is larger than the thickness of the metal foil layer, it is difficult to protrude from the upper end side of the flange portion before cutting the burrs.

When the container of the above 3) is used, the thickness of the resin film on the side of the metal foil layer is larger than the thickness of the metal foil layer in the composite film constituting the resin film layer on the inner surface side of the metal foil layer, so that the burr is cut along the resin film. Since the end surface is extended, since the front end is along or embedded in the end surface of the resin film layer, it is difficult to protrude from the end surface of the flange portion before cutting the burr.

In the case of the container of the above 4), since the thickness of the resin film on the metal foil layer side in the composite film is larger than the height of the cut burr, it is difficult to further protrude from the end surface of the flange portion before the burrs are cut.

When the container of the above 5) is used, since the resin film which penetrates the innermost layer side of the composite film is formed on the upper surface of the flange portion, and the depth of the resin film on the outer side of the resin film is not opened, the cover material can be easily made with a small force. Kaifeng.

When the container of the above 6) is used, since the composite film has the polyethylene resin film on the innermost layer side and the polypropylene resin film stacked on the outer side, it is easy to cover the entire surface of the two resin film layers. The peeling of the material is opened.

When the container of the above 7) is used, since the metal foil layer is made of an aluminum foil, it is light in weight and excellent in insulation against gas, moisture, light, and the like.

When the package of the above 8) is used, since the end surface of the flange portion of the container is cut The front end of the broken burr is facing the open side of the container and covered by the cover material. Therefore, when the consumer unpacks the cover material, the fingers and the like do not feel uncomfortable, unpleasant or painful due to the burrs of the end faces of the flange portions, and can be unseasonably opened. . Furthermore, the cost can be reduced compared to the flange portion of the container.

According to the package of the above 9), since the fingers of the consumer are not easily contacted with the front end of the cut burr by the resin retention, it is possible to more reliably avoid discomfort, unpleasantness or pain during opening.

1‧‧‧Package

2‧‧‧ Container

3‧‧‧Cleaning

4‧‧‧Resin retention

5‧‧‧Finishing device

6‧‧‧Down

7‧‧‧上模

8‧‧‧Retaining components

9‧‧‧ Pressing members

10‧‧‧ Lifting rod

20‧‧‧Composite board

21‧‧‧Flange

22‧‧‧Opening gap

30‧‧‧Composite board

31‧‧‧ pinching department

61‧‧‧Blade

71‧‧‧Upper

100‧‧‧Package

201‧‧‧metal foil layer

201a, 201b‧‧‧ cut off the raw edges

202‧‧‧Hot-melting resin film layer

202a‧‧‧ resin film on the innermost side

202b‧‧‧metal foil side resin film

203‧‧‧Heat resistant resin film layer

301‧‧‧metal foil layer

302‧‧‧Hot-melting resin film layer

303‧‧‧Outer resin film layer

C‧‧‧Contents

The first drawing shows a vertical sectional view of a package body according to an embodiment of the present invention.

The second figure is a partially enlarged vertical sectional view of the package.

The third figure shows a partially enlarged vertical sectional view showing a modification of the package.

The fourth drawing is a vertical sectional view for explaining a process of trimming a flange portion of a container constituting the package.

The fifth drawing shows a partially enlarged vertical sectional view of the package of the comparative example.

Hereinafter, embodiments of the present invention will be described with reference to the first to fourth figures.

The first figure shows the overall composition of the package of the present invention.

The package (1) shown in the figure is filled with contents (C) such as packaged foods by the container (2) and the lid member (3).

The container (2) is formed by forming a composite plate (20) into a cup shape, and has a horizontal flat flange portion (21) at the upper periphery of the opening.

The cover material (3) is composed of a composite plate (30) cut into a specified size and shape, and the peripheral portion thereof is thermally fused to the flange portion (21) of the container (2) to fill the contents (C). The opening above the container (2) is cover.

Further, the lid member (3) is formed with a pinching portion (31) which is protruded outward in the radial direction from one of the circumferential portions thereof and which is pinched by a finger when the lid member (3) is peeled off. .

As shown in the second figure, the composite sheet (20) constituting the container (2) is composed of a metal foil layer (201); a heat-fusible resin film layer (202) stacked on the inner surface of the metal foil layer (201); The heat resistant resin film layer (203) stacked on the outer surface of the metal foil layer (201) is formed.

As the metal foil layer (201), an aluminum foil, an iron foil, a stainless steel foil, or a copper foil can be used, and an aluminum foil is preferably used. The aluminum foil may be made of pure aluminum foil or aluminum alloy foil. Further, it may be soft or hard. It is preferable to use an A8000 series (especially A8079H or A8021H) classified by JIS H4160 having an iron content of 0.3 to 1.5% by weight. The soft material (O material) after the annealing treatment is excellent in moldability.

On one or both sides of the metal foil layer (201), a surface treatment such as chromate treatment may be performed as needed.

The thickness of the metal foil layer (201) is preferably 20 to 200 μm. When the thickness is more than 20 μm, the number of pinholes is small, and the insulation property can be ensured, and deep drawability can be obtained. By making the above thickness less than 200 μm, the force at the time of molding can be prevented from being caused to cause the composite sheet to be broken, and further, a light container can be obtained. The thickness of the metal foil layer (201) is preferably 40 to 120 μm.

The heat-fusible resin film layer (202) constitutes the inner surface of the container (2) (including the upper surface of the flange portion (21)), for example, a general-purpose film such as a polypropylene resin film or a polyethylene resin film, or the like. Such as a composite film.

For example, the composite film may be easily peeled off by opening at least two sheets of a resin film such as a polyethylene resin film and a polypropylene resin film which are easily peeled off from each other at the time of opening, and can be easily opened by a small force. In the case of the container (2) shown in the second figure, the heat-fusible resin film layer (202) is composed of a composite film in which two resin films are bonded together. The composite film is composed of, for example, a polyethylene resin film (202a) on the innermost layer side and a polypropylene resin film (202b) on the metal foil layer side stacked on the outer side. As will be described later, the polyethylene resin film (202a) on the upper surface of the flange portion (21) constituting the container (2) is thermally fused to the fused resin film layer (302) on the lower surface of the lid member (3). When the pinch portion (31) of the cover material (3) is pulled apart, the polyethylene resin film (202a) thermally fused to the fused resin film layer (302) is peeled off from the polypropylene resin film (202b), and by polyethylene The resin film (202a) is broken near the inner end of the heat fusion portion to perform opening of the lid member (3).

Further, when the heat-fusible resin film layer (202) is formed of a composite film, as shown in Fig. 3, the flange portion (21) of the container (2) may be provided with a through-circle throughout the circumference. The resin film (202a) on the innermost layer side (upper side of the flange portion (21)) of the composite film reaches the opening gap (22) of the upper portion of the resin film (202b) on the outer side (lower side). The resin film (202a) on the innermost layer side of the upper surface of the flange portion (21) of the container (2) and the heat-fusible resin film layer (302) on the lower surface of the lid member (3) are thermally fused. The radially outer portion of the notch (22) is made. In this aspect, the pinch portion (31) of the cover material (3) is pulled apart, and the resin film layers of the composite film (the resin film (202a) layer such as the polyethylene resin on the upper side of the third figure are gathered together with the lower side. When the resin film (202b) layer such as acryl resin is peeled off to the position of the opening notch (22), the lid member (3) can be opened. In other words, in the case of the package (1) of the third figure, when the lid member (3) is unsealed, it is not necessary to form the resin film (202a) on the innermost layer side of the flange portion (21) constituting the container (2). ) Breaking, so it is easy to open the seal with a small force.

The thickness of the heat-fusible resin film layer (202) is preferably from 100 to 500 μm, more preferably from 200 to 400 μm. The thickness of the heat-fusible resin film layer (202) is preferably larger than the thickness of the metal foil layer (201), whereby the front end of the cut burr (201a) is prevented from protruding from the upper surface side of the flange portion (21).

Furthermore, the composite film shown in the second or third figure constitutes a heat-fusible resin film layer In the case of (202), the thickness of the resin film (202b) on the side of the metal foil layer in the composite film is preferably larger than the thickness of the metal foil layer (201). Thereby, the cut burr (201a) is elongated along the end surface of the resin film (202b), and the leading end thereof can be along or embedded in the end surface of the resin film layer (202b). Therefore, the front end of the cut burr (201a) is less likely to protrude from the end surface of the flange portion (21). Further, the thickness of the resin film (202b) is preferably larger than the height of the cut burr (201a), whereby the front end of the cut burr (201a) is less likely to protrude further from the end surface of the flange portion (21). For example, when a composite film formed by stacking the polyethylene resin film (202a) on the innermost layer side and the polypropylene resin film (202b) on the metal foil layer side to form the heat-fusible resin film layer (202), the polyethylene resin The film (202a) has a thickness of 3 to 80 μm, and the polypropylene resin film (202b) has a thickness of 150 to 300 μm.

The heat-resistant resin film layer (203) constituting the outside of the container (2) is, for example, a polyethylene terephthalate resin film, a polybutylene terephthalate resin film, a polyamide resin film, or a polyphthalene. A highly versatile film such as an acid glycol ester resin film, a polybutylene naphthalate resin film, a polypropylene resin film, or a polyethylene resin film, or a composite material thereof.

The thickness of the heat-resistant resin film layer (203) is preferably from 3 to 300 μm, more preferably from 20 to 100 μm. When the thickness is more than 3 μm, corrosion of the metal foil can be prevented.

The bonding of the metal foil layer (201) and the heat-fusible resin film layer (202) and the bonding of the metal foil layer (201) and the heat-resistant resin film layer (203) are performed by interposing an adhesive layer, respectively, but the illustration is omitted. . As the subsequent layer, a two-liquid-curing polyester-polyurethane resin-based adhesive or a polyether-polyurethane resin-based adhesive is used.

Further, the configuration of the composite sheet (20) is not limited to the above, and any of the resin foil layers may be used as the container material of the present invention as long as the resin film layer is stacked on at least one side of the metal foil layer.

The processing for forming the shape of the composite plate (20) into the cup-shaped container (2) by rushing Press forming is carried out. The press forming of the composite sheet (20) is carried out by cold forming such as deep drawing forming or tension forming.

The press-formed container (2) trims the peripheral portion of the flange portion (21) as necessary so that the flange portion (21) has a predetermined size.

The fourth figure shows the dressing device (5) for trimming the flange portion (21) of the container (2).

The dressing device (5) is provided on the production line of the manufacturing container, and is constituted by a fixed lower mold (6) and a movable upper mold (7) which can be driven forward and backward by the lower mold (6).

The lower mold (6) is a substantially vertical cylindrical shape, and the upper end surface thereof can be placed with the flange portion (21) of the container (2) in an up-and-down state. The outer diameter of the lower mold (6) coincides with the outer diameter of the flange portion (21) after trimming, and a lower edge (61) is formed on the outer peripheral portion of the upper end surface. In the state before the dressing, the peripheral portion of the flange portion (21) is extruded from the upper end surface of the lower mold (6) (refer to Fig. 4(a)). A holding member (8) for holding the container (2) during trimming is provided in a freely movable manner inside the lower mold (6). The upper portion of the holding member (8) has a conical shape that is engageable in the vicinity of the opening of the inner surface of the container (2). Further, a suction hole (not shown) is opened on the circumferential surface of the holding member (8), and by vacuum-absorbing the inner surface of the container (2) through the suction hole, the container can be more reliably held by the holding member (8) ( 2).

The upper mold (7) has a bottomed cylindrical shape in the lower opening, and an upper edge (71) is formed on the inner peripheral edge of the lower end surface. The inner diameter of the upper mold (7) is appropriately set to generate a necessary clearance between the lower blade (61) and the upper blade (71). The clearance is usually set to be in the range of 2 to 10% based on 5% of the thickness of the composite sheet (20) constituting the container (2).

A pressing member (9) for pressing the flange portion (21) of the container (2) from above is provided inside the upper mold (7). The pressing member (9) is a bottomed tubular shape that is open below, and is attached to the lower end of the lifting rod (10) that penetrates the upper wall portion of the upper mold (7). The lifting rod (10) is biased downward by a spring means (not shown), Before the trimming, the lower end portion of the pressing member (9) is slightly jumped out from the lower end surface of the upper mold (7).

When the flange portion (21) of the container (2) is trimmed by using the above-described dressing device (5), first, as shown in the fourth (a) diagram, the container (2) of the upside down type is placed in the lower mold (6). The flange portion (21) of the container (2) is mounted on the upper end surface of the lower mold (6), and the holding member (8) at the lower retracted position is raised to the inner surface of the container (2). The fitting is fitted near the opening, and the inner surface of the container (2) is further sucked by the suction hole.

Next, the upper mold (7) that has been retracted in the upper direction is driven in and out by a hydraulic device or the like (not shown). First, the flange portion (21) of the container (2) is pressed from above by the lower end portion of the pressing member (9), and further moves the upper mold (7) downward, from the upper end surface of the lower mold (6). The peripheral portion of the extruded flange portion (21) is cut by the upper blade (71) of the upper mold (7) and the lower edge (61) of the lower mold (6) (refer to the fourth (b) diagram ).

When the trimming is completed, the upper mold (7) is moved to the upper retracted position, and the holding member (8) is moved to the lower retracted position, and the container (2) is sent to the downstream side of the production line.

The container (2) is completed by the above-described trimming, but the cut burr (201a) of the metal foil is generated on the end surface of the flange portion (21) of the container (2) in the completed state.

The container (2) of the present embodiment is cut by facing the peripheral edge portion of the flange portion (21) toward the opening side of the container (2), and the flange portion (21) is trimmed. As shown in the third figure, the leading end of all the cut burrs (201a) generated at the end faces of the flange portions (21) are directed toward the opening side of the container (2).

The composite plate (30) constituting the cover material (3) is, as shown in the second and third figures, for example, a metal foil layer (301); a heat-fusible resin film layer stacked on the inner surface of the metal foil layer (301). (302); and a resin film layer (303) stacked on the outer side of the metal foil layer (301).

The metal foil layer (301) imparts insulation or the like to the lid member (3), for example, by aluminum foil or stainless steel. A foil, a copper foil, a nickel foil, etc. are used, and it is preferable to use an aluminum foil.

The aluminum foil may be either a pure aluminum foil or an aluminum alloy foil. Further, it may be either soft or hard. It is preferable to use an annealed soft material (O material) of A8021 classified by JIS H4160.

The heat-fusible resin film layer (302) constituting the innermost layer of the lid member (3) serves to impart heat fusion (heat seal) to the lid member (3) and protect the metal foil (301) from the content (C). Role player.

The heat-fusible resin film layer (302) is formed, for example, by an easy-opening resin film, and a general-purpose film such as a polypropylene resin film or a polyethylene resin film having a thickness of about 10 to 200 μm is used as the easy-opening resin film, or When the composite film is used, the thickness is preferably about 20 to 100 μm in consideration of heat sealability and sealing property.

The heat-fusible resin film layer (302) may be added with a coloring pigment such as titanium oxide, an additive such as an antioxidant, a slip agent, an antistatic agent, a stabilizer, or a filler such as calcium carbonate, clay, mica or cerium oxide. Stiner.

Further, in order to maintain the preservability of the contents, an oxygen absorbing layer may be provided in the heat-fusible resin film layer (302) by oxygen absorption combined with a mixture of a metal halide and an auxiliary metal halide as an oxygen absorbing component. The resin composition is composed of.

The resin film layer (303) on the outermost layer of the outermost layer of the cover member (3) serves as a function of protecting the surface of the metal foil layer (301) and protecting the printed surface.

The constituent material of the outer resin film layer (303) may, for example, be a polyester resin film or a polyamide resin film. An extension film is preferably used for the above film. In terms of heat resistance and strength, it is preferably a biaxially stretched polyester resin film, a biaxially stretched polyamide resin film, or a multi-layer film comprising the same, and further, a biaxially stretched polyester may be used. A multi-layer film of a resin film and a biaxially stretched polyimide film. The type of the polyamide resin film is not particularly limited, and examples thereof include: Nylon-6 resin film, nylon-6,6 resin film, MXD nylon resin film, and the like. Further, the biaxially stretched polyester resin film may be a biaxially stretched polybutylene terephthalate (PBT) resin film or a biaxially stretched polyethylene terephthalate (PET) resin film. . When these films are stacked, they are carried out, for example, by a dry glue lamination method and with an adhesive.

Although the drawing is omitted, the bonding of the metal foil layer (301) and the heat-fusible resin film layer (302) and the bonding of the metal foil layer (301) and the outer resin film layer (303) are performed via an adhesive layer. .

These adhesive layers are formed, for example, by a urethane resin-based adhesive, an acrylic resin-based adhesive, an epoxy resin-based adhesive, a polyolefin resin-based adhesive, an elastic system adhesive, a fluorine-based adhesive, or the like. Among them, a two-liquid hardening type polyester-polyurethane resin formed of a polyester resin as a main component and a polyfunctional isocyanate compound as a curing agent, or an adhesive containing a polyether-polyurethane resin is preferably used.

Further, instead of the outer resin film layer (303), the outermost layer of the lid member (3) may be formed by a surface coating layer. The surface coating layer is applied to the surface of the metal foil by, for example, coating or dissolving a coating resin such as an epoxy resin, a nitrocellulose-based resin, an epoxy melamine resin, or a vinyl chloride-vinyl acetate copolymer resin in a solvent. Formed by drying.

The method of thermally fusing the lid member (3) on the flange portion (21) of the container (2) is not particularly limited, but for example, the lid member (3) is superposed on the flange portion (21) of the container (2). The lower peripheral portion is heated by applying a predetermined pressure to a hot plate of a predetermined temperature (for example, about 180 ° C), and applying a specified pressure for heating for a predetermined time.

As shown in the second and third figures, the cutting edge portion (21) is cut at the end surface of the flange portion (21) by thermally fusing the peripheral edge portion of the lid member (3) on the flange portion (21) of the container (2). The front end of the burr (201a) is covered by the cover material (3). Therefore, when the consumer unpacks the cover material (3), the fingers and the like are not caused by the flange portion (21). The cut end of the end face (201a) feels uncomfortable, unpleasant or painful, and can be opened comfortably.

Further, in the second and third figures, the resin retention (4) of the hanging shape is formed on the peripheral portion of the lower surface of the lid member (3) by thermal fusion. The resin retention (4) constitutes a heat-fusible resin film layer (202) on the flange portion (21) of the container (2). More specifically, it is a resin film (202a) such as a polyethylene resin film on the innermost layer side of the layer (202), and a heat-fusible resin film layer such as a polyethylene resin film constituting the inner surface of the lid member (3). (302) The person formed by the flow during heat fusion, and the two layers (202a) (302) become one piece. Further, the resin retention (4) has a height at which the front end is the same as the front end of the cut burr (201a) or comes to a horizontal position lower than the burr (201a). By the resin retention (4), the fingers of the consumer and the like are less likely to come into contact with the front end of the cut burr (201a). Therefore, when the consumer opens the seal, it is more practical to avoid feeling uncomfortable, unpleasant or painful by cutting the burrs (201a).

The fifth drawing shows the package (100) of the comparative example, and the front end of the cutting burr (201b) generated by the end face of the package body (100) except the end portion of the flange portion (21) faces the opposite side of the opening side of the container. That is, the package body (1) of the above embodiment is the same as the lower side.

The cut burr (201b) of the package (100) shown in the figure is cut, for example, by cutting the peripheral edge portion of the flange portion (21) of the container (2) toward the opposite side of the opening side of the container (2). The edge portion (21) is formed by trimming and jumps out from the end surface of the flange portion (21).

Therefore, the package (100) of the comparative example is not in a state in which the leading end of the cut burr (201b) is covered by the lid member (3). Further, the front end of the cut burr (201b) is located at a horizontal position lower than the front end of the resin retention (4). Thus, in the case of the package (100), the consumer may feel uncomfortable, unpleasant or painful when cutting the burrs (201b) at the time of opening.

Further, in the above-described embodiment, a series of containers formed by trimming the flange portion and a package body using the container after the composite plate is formed into a cup shape are used, but The present invention can be applied to a container of a so-called unfinished method in which a composite sheet is cut into a predetermined size and shape, and a package using the container.

In the latter case, by cutting the composite sheet toward the side of the heat-fusible resin film layer constituting the inner surface of the container, the front end of the cut burr can be directed toward the opening side of the molded container, and the same effects as those of the above embodiment can be obtained.

[Industrial Availability]

The present invention is suitably used as a container for packaging contents such as foods that need to be stored for a long period of time, and a package in which the contents of the package are sealed by the container and the lid member.

1‧‧‧Package

2‧‧‧ Container

3‧‧‧Cleaning

4‧‧‧Resin retention

20‧‧‧Composite board

21‧‧‧Flange

30‧‧‧Composite board

201‧‧‧metal foil layer

201a‧‧‧ cut off the raw edges

202‧‧‧Hot-melting resin film layer

202a‧‧‧ resin film on the innermost side

202b‧‧‧metal foil side resin film

203‧‧‧Heat resistant resin film layer

301‧‧‧metal foil layer

302‧‧‧Hot-melting resin film layer

303‧‧‧Outer resin film layer

Claims (9)

A container in which a composite sheet in which a resin film layer is laminated on at least one side of a metal foil layer is formed into a cup shape, and a peripheral portion of the opening has a flange portion, and an end of the flange portion faces the opening of the container before cutting the burr side. The container of claim 1, wherein the composite sheet has a resin film layer stacked on an inner surface of the metal foil layer, the resin film layer having a thickness greater than a thickness of the metal foil layer. The container of claim 2, wherein the resin film layer stacked on the inner surface of the metal foil layer is composed of a composite film in which two or more resin films are stacked, and the resin on the metal foil layer side of the composite film The thickness of the film is greater than the thickness of the metal foil layer. The container of claim 3, wherein the thickness of the resin film on the side of the metal foil layer in the composite film is greater than the height of the cut burrs. A container according to claim 3, wherein a notch for opening is formed on the flange portion, and has a depth which penetrates the resin film on the innermost layer side of the composite film and reaches the upper portion of the resin film on the outer side. The container of claim 3, wherein the composite film has a polyethylene resin film on the innermost layer side and a polypropylene resin film stacked on the outer side. The container of claim 1, wherein the metal foil layer is composed of an aluminum foil. A package which is formed by thermally fusing a cover material to a flange portion of a container, such that a cup-shaped opening of the container filled with the contents is covered, and the container is in the first to seventh items of the patent application scope. Any one of the containers. The package of claim 8, wherein the resin is retained in the peripheral portion of the underside of the cover material by heat fusion, and the resin is retained before the front end has a cut edge The height at which the ends are the same, or come to a horizontal position below them.