Container and manufacturing method thereof

Abstract

To provide a storage body capable of preventing a packaging material and a food product from deforming, and preventing a food product from getting damp when the packaging material storing a sheet-like food product is carried, and its manufacturing method.SOLUTION: A storage body comprises: a packaging material laminate 10M in which a plurality of packaging materials 10 for packaging a rice ball 50 are laminated in a state where a laver 40 being a sheet-like food product is individually packaged in each of the packaging materials; a sheet-like base member 20 in which the packaging material laminate 10M is arranged on one surface 20a side; and a storage bag 30 which stores the packaging material laminate 10M and the base member 20 and seals it in a vacuum packaging state.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a container suitable for transporting a plurality of packaging materials together, and a method for manufacturing the same. [Background technology]

[0002] Conventionally, rice balls, which are formed into a predetermined shape, are individually packaged and sold at convenience stores, supermarkets, etc. One type of packaging material for rice balls is a double-layered packaging material having an outer film and an inner film, in which a sheet-like food such as seaweed is placed inside, and the outer film is cut and separated to the left and right, and at the same time, the inner film is torn to the left and right, so that the package is opened with the sheet-like food wrapped around the rice (see Patent Document 1, etc.). For example, if dried seaweed is used as the sheet-like food, the seaweed does not come into contact with the rice until just before opening, allowing the customer to enjoy the crispy texture of the seaweed.

[0003] Here, in the manufacturing plant, about 50 to 100 sheets of the above-mentioned packaging material, each of which contains a sheet-like food item inside and is stacked, are placed in a bag such as a plastic bag and transported to the location of the packaging process, where the packaging material is removed one by one to package cooked rice. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2015-104315 A Summary of the Invention [Problem to be solved by the invention]

[0005] When multiple packaging materials containing sheet-like foods are packed in a plastic bag or other bag for transport, the packaging materials may move during transport, causing the packaging materials and the food inside to bend or deform. If the packaging materials or the food inside are deformed, it can cause problems such as making it difficult to remove the packaging materials one by one from the multiple packaging materials and making it difficult to package cooked rice. There was also concern that the food would absorb moisture from the air inside the bag and become damp, reducing the texture and flavor that would be achieved by its original dry state.

[0006] The present invention has been made in consideration of the above-mentioned circumstances, and aims to provide a container and a manufacturing method thereof that can prevent deformation of the packaging material and the food, and prevent the food from becoming damp, when the packaging material containing sheet-like food is transported. [Means for solving the problem]

[0007] (1) The container of the present invention comprises a packaging material laminate in which multiple packaging materials for wrapping rice balls are stacked together in a state in which each of the packaging materials individually packages a sheet-like food product, a sheet-like base member on one side of the packaging material laminate, and a storage bag that contains the packaging material laminate and the base member and seals them in a vacuum-packed state.

[0008] (2) In (1), each of the multiple packaging materials constituting the packaging material laminate is stacked so that the back surface of the side that comes into contact with the rice ball is positioned on the side of the base member, and it is preferable that each of the ends on both sides in one direction of the multiple packaging materials arranged on at least the surface side opposite the base member in the packaging material laminate is bent toward the base member by the storage bag.

[0009] (3) In (1), each of the multiple packaging materials constituting the packaging material laminate is stacked so that the back surface of the side that comes into contact with the rice ball is positioned on the side of the base member, and the base member has a folded portion that is folded back on the one side of the base member to cover each of the ends on both sides of one direction of the packaging material laminate, and it is preferable that each of the ends on both sides of one direction of the multiple packaging materials arranged on at least the surface side of the packaging material laminate opposite the base member is bent toward the side of the base member by the folded portion.

[0010] (4) A method for manufacturing a container of the present invention includes the steps of individually packaging sheet-like food in packaging material that encases rice balls, stacking a plurality of the packaging materials in which the food is individually packaged on one side of a sheet-like base member to form a packaging material stack, placing the packaging material stack and the base member in a storage bag, and drawing a vacuum inside the storage bag to seal the packaging material stack and the base member within the storage bag to vacuum pack them. Effect of the Invention

[0011] According to the present invention, it is possible to provide a container and a manufacturing method thereof that can prevent deformation of the packaging material and the food, and prevent the food from becoming damp, when the packaging material containing sheet-like food is transported. [Brief description of the drawings]

[0012] [Figure 1] FIG. 2 is a plan view showing a container according to the first embodiment. [Diagram 2] FIG. 2 is a cross-sectional view taken along line II-II of FIG. [Diagram 3] FIG. 2 is an exploded perspective view showing the packaging material laminate and the base member according to the first embodiment. [Figure 4] FIG. 2 is a plan view showing the front side of the packaging material according to the first embodiment. [Diagram 5] FIG. 2 is a rear view of the packaging material according to the first embodiment. [Figure 6] FIG. 2 is an exploded perspective view of the packaging material according to the first embodiment. [Figure 7]FIG. 7 is a cross-sectional view taken along line VII-VII of FIG. [Figure 8] FIG. 2 is a diagram showing a schematic diagram of a process in which one sheet of packaging material is taken out from the packaging material laminate according to the first embodiment and used to wrap a rice ball. [Figure 9] 1 is a perspective view showing a packaged rice ball wrapped in a packaging material according to a first embodiment. FIG. [Figure 10] FIG. 11 is a plan view showing a container according to a second embodiment. [Figure 11] 11 is a cross-sectional view taken along the line XI-XI of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, an embodiment will be described with reference to the drawings. (First embodiment) Fig. 1 is a plan view of a container 1 according to a first embodiment. Fig. 2 is a cross-sectional view taken along line II-II of Fig. 1. Fig. 3 is an exploded perspective view showing a packaging material laminate 10M and a base member 20 which constitute the container 1. As shown in Figs. 1 to 3, the container 1 includes a packaging material laminate 10M formed by laminating a plurality of packaging materials 10, a base member 20, and a container bag 30. 1 to 3 indicate the length direction and width direction, respectively, of the container 1, the packaging material 10, the packaging material laminate 10M and the stand member 20. The same applies to Figs. 4 to 11.

[0014] The packaging material laminate 10M is formed by stacking a plurality of rectangular packaging materials 10. The packaging material 10 in this embodiment is a rectangular film that wraps rice balls 50 (described below) made by squeezing cooked rice into a triangular shape. Each of the plurality of packaging materials 10 individually packs a sheet-like food 40. In other words, the packaging material laminate 10M is formed by stacking a plurality of packaging materials 10 each individually packing a sheet-like food 40. The container 1 in this embodiment is manufactured in a factory that manufactures a large number of rice balls 50.

[0015] Examples of the sheet-like food 40 include, but are not limited to, thin sheet-like nori seaweed such as roasted nori seaweed that wraps the rice ball 50. Other examples of the sheet-like food 40 include rectangular foods that are thinly spread and shaped, such as grated kelp, thin omelet, and tatami-mat iwashi. In any case, the food 40 is a sheet-like food that is flexible enough to wrap the rice ball 50.

[0016] Here, the sheet-like food 40 will be described as seaweed 40. The rectangular seaweed 40 has a size and shape that allows it to wrap rice balls 50. In the following description, packaging material 10 in which seaweed 40 is wrapped may be referred to as seaweed-containing packaging material 10B. Packaging material laminate 10M is formed by stacking, for example, about 50 to 100 sheets of seaweed-containing packaging material 10B.

[0017] Fig. 4 is a plan view of the nori-containing packaging material 10B as viewed from the front surface 10s side. Fig. 5 is a back view of the nori-containing packaging material 10B. Fig. 6 is an exploded perspective view of the nori-containing packaging material 10B. Fig. 7 is a cross-sectional view taken along line VII-VII in Fig. 6.

[0018] As shown in Figs. 4 to 7, the packaging material 10 comprises an outer film 11 on the flexible front surface 10s side, and an inner film 12 on the flexible back surface 10g side. The back surface 10g side is the side that comes into contact with the rice ball 50. Seaweed 40 is sandwiched and disposed between the outer film 11 and the inner film 12. In Figs. 6 and 7, the inner film 12 is disposed below the outer film 11. Each packaging material 10 in the packaging material laminate 10M is laminated so that the outer film 11 and the inner film 12 are disposed on the same side.

[0019] The outer film 11 is made of a single transparent or semi-transparent film made of synthetic resin such as polypropylene, etc. The outer film 11 has four corners each having a notch 11a.

[0020] The inner film 12 has the same shape as the outer film 11. The inner film 12 includes a left film 13 and a right film 14 that are separated from each other in the width direction, i.e., the left-right direction. The left film 13 and the right film 14 are overlapped at their inner edge portions 13a and 14a. The inner film 12 has cutout portions 12a at its four corners similar to those of the outer film 11.

[0021] As shown in Figs. 4 and 5, the outer film 11 and the inner film 12 are joined at their respective peripheral portions via a seal portion 15. The seal portion 15 is a portion where the outer film 11 and the inner film 12 are joined by welding or other means. The seal portion 15 includes a plurality of first seal portions 15a, a plurality of second seal portions 15b, and a plurality of third seal portions 15c. The first seal portions 15a are arranged at the four corners of the packaging material 10. The second seal portions 15b are rectangular and are arranged at equal intervals between the first seal portions 15a at both ends in the length direction. The third seal portions 15c are elongated in the width direction and are arranged in a pair on the left and right at each end in the length direction.

[0022] A strip-shaped cutting tape 16 extending in the length direction is attached to the inner surface side of the widthwise center portion of the outer film 11. The cutting tape 16 is a film made of synthetic resin. The cutting tape 16 extends over the entire length of the outer film 11. The outer film 11 can be divided in the width direction, i.e., in the left and right direction, by tearing the cutting tape 16 from one end. A cut 17a is provided on both sides of the cutting tape 16 at both ends in the length direction of the outer film 11. A pair of cuts 17a sandwiching the cutting tape 16 provides an operation piece 17 that can be turned up from the packaging material 10, and the cutting tape 16 can be easily torn over its entire length by pinching the operation piece 17 with fingers.

[0023] When the outer film 11 and the inner film 12 are joined, the seaweed 40 is sandwiched between the outer film 11 and the inner film 12 and contained inside the packaging material 10. Alternatively, after the outer film 11 and the inner film 12 are joined, the seaweed 40 may be contained inside the packaging material 10 by being inserted between the left film 13 and the right film 14 at the center in the width direction of the inner film 12.

[0024] The base member 20 is a sheet-like member. The base member 20 is, for example, a flat plate made of synthetic resin having a certain thickness and rigidity such that it elastically deforms but retains its original shape, or corrugated cardboard. Examples of materials for the flat plate made of synthetic resin include acrylic resin, polystyrene, AS resin, and PET. The base member 20 is rectangular and slightly larger than the packaging material 10. The packaging material laminate 10M is placed on one surface 20a of the base member 20. The packaging material laminate 10M is placed on one surface 20a of the base member 20 so that the length direction of the packaging material 10 is parallel to the length direction of the base member 20. Each packaging material 10 of the packaging material laminate 10M is laminated on the base member 20 with the inner film 12 on the back surface 10g side positioned on the base member 20 side.

[0025] The storage bag 30 stores the packaging material laminate 10M and the base member 20, and seals the packaging material laminate 10M and the base member 20 in a vacuum-packed state. The storage bag 30 is a bag made of a flexible transparent or semi-transparent synthetic resin film. As such a synthetic resin film, a single-layer or multi-layer synthetic resin film is used. In the case of a single layer, for example, a synthetic resin film such as polyethylene or polypropylene is used. In the case of a multi-layer, for example, a synthetic resin film having a three-layer structure in which PVDC (polyvinylidene chloride), which serves as a barrier layer that blocks moisture, is sandwiched between polyethylene, is preferably used. The storage bag 30 can be, for example, a three-sided bag that is rectangular and has an opening only at the edge of one short side. In this case, the packaging material laminate 10M and the base member 20 are stored inside the storage bag 30 through the opening, the air inside the storage bag 30 is sucked to create a vacuum, and the opening is sealed by welding or other means. As a result, the packaging material laminate 10M and the base member 20 are sealed in a vacuum-packed state in the storage bag 30. Note that the storage bag 30 is not limited to a three-sided bag, and may be vacuum-packed, for example, by placing the packaging material laminate 10M and the base member 20 between two synthetic resin sheets, bonding them together, and welding the outer periphery.

[0026] The packaging material stack 10M is compressed in the stacking direction of the multiple packaging materials 10 by the storage bag 30. As a result, as shown in Fig. 2, each of the end portions 10e on both sides in the width direction of a predetermined number of packaging materials 10 arranged on at least the surface side opposite the base member 20 (the upper side in Fig. 2) among the multiple packaging materials 10 in the packaging material stack 10M is bent toward the base member 20 by the storage bag 30. Then, over time, the bending is fixed and the deformation is formed.

[0027] The container 1 according to the embodiment described above can be manufactured as follows. First, one sheet of nori seaweed 40 is individually wrapped in each of the multiple packaging materials 10. Next, a predetermined number (e.g., 50 to 100 sheets) of packaging materials 10 containing nori seaweed 10B, which are packaging materials 10 in which nori seaweed 40 is individually wrapped, are bundled and arranged in a stacked state on one surface 20a of the base member 20. That is, the packaging material stack 10M is arranged on one surface 20a of the base member 20. Next, the packaging material stack 10M and the base member 20 are accommodated in a storage bag 30. Thereafter, a vacuum is drawn inside the storage bag 30, and the packaging material stack 10M and the base member 20 are sealed in the storage bag 30 to be vacuum-packed.

[0028] Vacuum packing can prevent the seaweed 40 from becoming damp. Also, when the base member 20 is made of cardboard, the base member 20 may contain moisture, but vacuum packing can reduce the moisture content and prevent the seaweed 40 from becoming damp.

[0029] 8 is a schematic diagram showing a process in which rice balls 50, which are made by squeezing rice and forming them into a triangular shape, are covered with a sheet of nori-containing packaging material 10B taken out of a packaging material stack 10M and packaged in a factory that produces a large number of rice balls 50. The container 1 of the above-mentioned embodiment is transported to the location of the process, the storage bag 30 is opened, the packaging material stack 10M is taken out, and the packaging material stack 10M is set on a predetermined removal stand 60. In the packaging material stack 10M set on the removal stand 60, each nori-containing packaging material 10B is stacked approximately horizontally with the inner film 12 arranged on the lower side. Since a plurality of nori-containing packaging materials 10B are stacked on one surface 20a of the base member 20 and transported in a vacuum-packed state using the storage bag 30, deformation of the packaging material 10 and the nori 40 can be suppressed.

[0030] Rice balls 50, which are made by squeezing cooked rice and forming it into a triangular shape, are placed horizontally below the packaging stack 10M. One sheet of seaweed-containing packaging material 10B, which is the bottommost sheet of packaging stack 10M, is sucked and removed downward from the packaging stack 10M by a removal device (not shown) such as a vacuum pick, and is placed over the rice balls 50 from above.

[0031] Here, each of the ends 10e on both sides in the width direction of one packaging material 10 taken out of the packaging material stack 10M shown in Fig. 8 is bent and curved downward where the rice ball 50 is placed. This is because the packaging material stack 10M arranged on one surface 20a of the base member 20 is vacuum-packed in the storage bag 30 as described above. The multiple packaging materials 10 adjacent to the base member 20 in the packaging material stack 10M are pressed against the one surface 20a of the base member 20, which is flat and hard, and are therefore not easily curved. However, the multiple packaging materials 10 stacked on the surface side opposite the base member 20 are easily curved and curved by being pressed against the flexible packaging material 10 below by the compressive force of the vacuum packing.

[0032] When the ends 10e on both sides of the width of the packaging material 10 are thus formed, the packaging material 10 takes a shape that fits the outer surface of the rice ball 50 below, and is prevented from warping upward on the side opposite the rice ball 50. This makes it easier to wrap the rice ball 50 in the seaweed-containing packaging material 10B, and reduces packaging defects.

[0033] After this, the onigiri 50 is wrapped in the seaweed-containing packaging material 10B, and the overlapping portion of the packaging material 10 is held in place with a seal or the like to obtain packaged onigiri 50B packaged in the seaweed-containing packaging material 10B as shown in Fig. 9. Packaged onigiri 50B is sold in stores such as supermarkets and convenience stores.

[0034] To open the packaged rice ball 50B, first, the cutting tape 16 surrounding the rice ball 50 is torn by pinching and pulling the operating piece 17 with the fingers, and the outer film 11 is divided into left and right halves. Next, the left side of the divided outer film 11 and the left side film 13 of the inner film 12 are pinched, and the right side of the divided outer film 11 and the right side film 14 of the inner film 12 are pinched and pulled apart to the left and right. As a result, the outer film 11 and the inner film 12 are separated into left and right halves, and the remaining seaweed 40 is attached while wrapped around the rice ball 50, and the rice ball 50 with the seaweed 40 attached can be eaten.

[0035] The container 1 of the first embodiment described above comprises a packaging material laminate 10M in which a number of packaging materials 10 for wrapping rice balls 50 are stacked together in a state in which each of the packaging materials 10 individually wraps a sheet-like food, seaweed 40, a sheet-like base member 20 on one side 20a of which the packaging material laminate 10M is arranged, and a storage bag 30 that contains the packaging material laminate 10M and the base member 20 and seals them in a vacuum-packed state.

[0036] This makes it possible to prevent the packaging material 10 and the seaweed 40 from deforming and to prevent the seaweed 40 from becoming damp when transporting a plurality of packaging materials 10 containing the seaweed 40. As a result, it becomes easier to wrap the packaging material 10 into rice balls 50, and the crispy texture of the dried seaweed 40 can be enjoyed.

[0037] In the container 1 of the first embodiment, each of the multiple packaging materials 10 constituting the packaging material laminate 10M is stacked so that the back surface 10g on the side that comes into contact with the rice ball 50 is positioned on the side of the base member 20, and it is preferable that the end portions 10e on both sides in the width direction of the multiple packaging materials 10 arranged on at least the surface side of the packaging material laminate 10M opposite the base member 20 are bent toward the base member 20 by the storage bag 30.

[0038] This allows the task of covering and packaging the rice balls 50 with the packaging material 10 to be carried out smoothly, improving work efficiency.

[0039] A manufacturing method for the container 1 in the first embodiment includes the steps of individually packaging nori 40, a sheet-like food, in packaging material 10 that encases rice balls 50, stacking a plurality of packaging materials 10 each having individually packaged nori 40 on one side 20a of a sheet-like base member 20 to form a packaging material laminate 10M, housing the packaging material laminate 10M and the base member 20 in a storage bag 30, and drawing a vacuum inside the storage bag 30 to seal the packaging material laminate 10M and the base member 20 inside the storage bag 30 and vacuum-pack them.

[0040] This makes it possible to suitably manufacture a container 1 that can prevent the packaging materials 10 and the seaweed 40 from deforming and the seaweed 40 from becoming damp when transporting a plurality of packaging materials 10 containing the seaweed 40.

[0041] Second embodiment Next, a second embodiment will be described with reference to FIGS. The container 1 of the second embodiment is different from that of the first embodiment in the form of the base member 20, but the other configurations are the same. Therefore, the same reference numerals are used to designate the same components as those of the first embodiment, and the description will be omitted, and mainly only the differences will be described.

[0042] As shown in Fig. 10 and Fig. 11, the base member 20 of the second embodiment has folded-back portions 25 at both ends in the width direction. The folded-back portions 25 are folded back toward one surface 20a of the base member 20, and cover both ends in the width direction of the packaging material laminate 10M. The base member 20 of the second embodiment has a flat arrangement portion 21 on which the packaging material laminate 10M is arranged, and a pair of left and right folded-back portions 25 folded back from both ends of the arrangement portion 21 toward the inside in the width direction of the arrangement portion 21. The left and right folded-back portions 25 may be formed in advance, and the packaging material laminate 10M may be arranged on the upper surface of the arrangement portion 21 between these folded-back portions 25. Alternatively, the folded-back portions 25 may be formed after the packaging material laminate 10M is arranged.

[0043] In the container 1 of the second embodiment, the inside of the storage bag 30 is evacuated with both widthwise ends of the packaging material stack 10M covered by the respective fold-back portions 25. The packaging material stack 10M is compressed in the stacking direction of the plurality of packaging materials 10 by the storage bag 30, and further, each of both ends is compressed in the stacking direction of the plurality of packaging materials 10 by the fold-back portions 25 of the base member 20. As a result, as shown in FIG. 11, each of the end portions 10e on both widthwise sides of a predetermined number of packaging materials 10 arranged on at least the surface side (upper side in FIG. 11) opposite the base member 20 among the plurality of packaging materials 10 in the packaging material stack 10M is bent toward the base member 20 by the fold-back portions 25. Then, over time, the bending is fixed and shaped.

[0044] In the second embodiment, as in the first embodiment, the multiple packaging materials 10 stacked on the surface side opposite the base member 20 are easily bent and shaped by being pressed against the flexible packaging material 10 below by the pressing force received from the folded-over portion 25.

[0045] When each of the ends 10e on both sides of the width of the packaging material 10 are formed in this manner, the packaging material 10 takes a shape that conforms to the outer surface of the rice ball 50, as shown in Figure 8, making it easier to wrap the rice ball 50 in the seaweed-containing packaging material 10B and reducing packaging defects.

[0046] In the container 1 of the second embodiment, each of the multiple packaging materials 10 constituting the packaging material laminate 10M is stacked so that the back surface 10g on the side that contacts the rice ball 50 is positioned on the side of the base member 20, and the base member 20 has a folded portion 25 that is folded back on one side 20a of the base member 20 to cover both widthwise ends of the packaging material laminate 10M, and the ends 10e on both widthwise sides of the multiple packaging materials 10 arranged on at least the surface 10s side of the packaging material laminate 10M opposite the base member 20 are bent toward the side of the base member 20 by the folded portion 25.

[0047] This allows the task of covering and packaging the rice balls 50 with the packaging material 10 to be carried out smoothly, improving work efficiency.

[0048] The present invention is not limited to the above-described embodiments, and various modifications can be made thereto. For example, at least one surface 20a of the base member 20 on which the packaging material laminate 10M is placed may be formed into an overall curved shape in the width direction, or into a mountain shape, so that not only the ends 10e on both sides in the width direction but the entire packaging material 10 is shaped to be curved. In addition to bending and forming the ends 10e on both sides of the width direction of the packaging material 10, the ends on both sides of the length direction of the packaging material 10 may be bent and formed. [Explanation of symbols]

[0049] 10 Packaging materials 10e Both ends of packaging material 10g Back of packaging material 10M packaging material laminate 20 Base material 20a One side of the base member 25 Folding part 30 Storage Bag 40 Food (seaweed) 50 Rice ball

Claims

1. a packaging material laminate in which a plurality of packaging materials for wrapping rice balls are stacked in a state where each of the packaging materials individually wraps a sheet-like food; a sheet-like base member on one side of which the packaging material laminate is placed; a storage bag that stores the packaging material laminate and the base member and seals them in a vacuum-packed state; Each of the plurality of packaging materials constituting the packaging material laminate is laminated such that the back surface of the side that contacts the rice ball is located on the side of the base member, A container in which the surface of the base member on which the packaging material stack is placed is generally curved in the width direction, and the entire packaging material stack is bent toward the base member by the storage bag.

2. A packaging material laminate in which a plurality of packaging materials for wrapping rice balls are stacked in a state where each of the packaging materials individually wraps a sheet-like food; a sheet-like base member on one side of which the packaging material laminate is placed; a storage bag that stores the packaging material laminate and the base member and seals them in a vacuum-packed state; Each of the plurality of packaging materials constituting the packaging material laminate is laminated such that the back surface of the side that contacts the rice ball is located on the side of the base member, The base member has a folded portion that is folded back toward the one surface side of the base member to cover each of the ends on both sides of one direction of the packaging material laminate, A container in which each of the ends on both sides in one direction of a plurality of the packaging materials arranged on at least the surface side opposite the base member in the packaging material stack is bent toward the base member by the folded-back portion.

3. packaging the sheet-like food individually in a packaging material for enclosing the rice ball; a step of stacking the plurality of packaging materials, each of which individually packages the food product, on one surface of a sheet-like base member to form a packaging material stack; placing the packaging material laminate and the base member in a storage bag; and drawing a vacuum inside the storage bag to seal the packaging material laminate and the base member in the storage bag to form a vacuum pack. At least one surface of the base member on which the packaging material stack is placed has a generally curved shape in the width direction, A method for manufacturing a container, comprising bending the entire packaging material stack toward the base member.

4. A method of individually packaging sheet-like food in a packaging material for enclosing rice balls; a step of stacking the plurality of packaging materials, each of which individually packages the food product, on one surface of a sheet-like base member to form a packaging material stack; placing the packaging material laminate and the base member in a storage bag; and drawing a vacuum inside the storage bag to seal the packaging material laminate and the base member in the storage bag to form a vacuum pack. The base member has a folded portion that is folded back toward the one surface side of the base member to cover each of the ends on both sides of one direction of the packaging material laminate, A method for manufacturing a container, comprising bending each of the ends on both sides of one direction of a plurality of packaging materials arranged on at least the surface side of the packaging material laminate opposite the base member toward the base member by the folded-back portion.

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