JP2023045858A - Miso container and resin film for forming miso container - Google Patents

Abstract

To provide a miso container, and a resin film for forming a miso container suitable for forming the container that can prevent a part of the miso from adhering to and remaining on an inner surface when semi-solid miso near the inner surface of the container is taken out during cooking, etc.SOLUTION: A miso container 1 of the present invention has convex parts 11e and 12e having a number density of 40 to 3000/m2 on an inner surface that contacts the miso. On this inner surface, the ratio of the convex part to the total area is preferably 40% or more. The height of the convex part is preferably 30 to 150 μm. A bag container may have a zipper at an opening.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a container for filling or containing semi-solid miso, and a resin film for forming a miso container used to form the container.

Brewed miso, such as rice miso, barley miso, soybean miso, etc. dug out of miso buckets, and miso mixtures of these are usually semi-solid and have high density, so they should be stored in a rigid resin container or the like. It is filled, contained, and sold as miso-containing products. In addition, since miso-containing products on the market vary widely in terms of size, amount, etc., consumers often take out the miso and transfer it to containers prepared by themselves for convenience.

Conventionally, the following various containers are known as containers used for filling semi-solid miso.
Patent document 1 describes a bag in which synthetic resin sheets are layered and the sides are welded together. In the miso packaging bag to be pushed out from the opening of (1), the upper part of the bag is formed in a mountain shape with the top part arranged in the center, and the top part of the mountain-shaped upper part in the bag is used as the opening. A miso packaging bag characterized by the following is disclosed.
In Patent Document 2, a non-stretched EVOH film having a thickness of 10 to 40 μm formed from an ethylene-vinyl alcohol copolymer (EVOH) having an ethylene content of 32 to 48 mol% is coated on one side with an adhesive layer. Disclosed is a food packaging container obtained by thermoforming a laminated sheet in which unstretched polyethylene terephthalate (PET) resin layers of 200 to 1200 μm are laminated by lamination into a container shape in which an unstretched EVOH film layer is arranged on the outer surface side. It is

Patent Literature 3 discloses a cup-shaped plastic container, which is formed in the shape of a cup and is made of a resin layer, and the inner surface of which is coated with a ceramic thin film.
In addition, Patent Document 4 discloses a case made of synthetic resin and having a lid with an open top, and a bag made of a synthetic resin sheet and filled with miso and stored inside the case. By sandwiching the folding material folded in two on the left and right sides of the front and back body material, the bag body provides a folding part on each of the left and right sides, and each of the sandwiched left and right There is disclosed a storage container for miso, which is a gusset bag in which the upper end portion of the folding material is heat-sealed to the back surface of the front and back panel material by a belt-like member made of synthetic resin and having a constant width.

Japanese Patent No. 3058972 JP-A-2001-31047 JP-A-2003-72763 JP 2018-47920 A

Conventionally, since the inner surface of a known miso container is smooth, when the miso near the inner surface of the container is taken out during cooking or the like, part of the miso adheres to the inner surface, remains, and is scraped off. In some cases, such recovery work was required.

An object of the present invention is to solve the above problems by providing a container for containing miso, that is, when the semi-solid miso near the inner surface of the container is taken out during cooking or the like, part of the miso adheres to and remains on the inner surface. It is an object of the present invention to provide a miso storage container capable of suppressing the occurrence of miso. Another object of the present invention is to provide a miso container-forming resin film used to form the container, and miso-containing products.

The present inventor solved the above-mentioned problems by setting the number of projections patterned on the inner surface of the container in which semi-solid miso is in contact with the miso to be a specific number per unit area. The inventors have obtained the knowledge that the present invention has been completed.

The present invention is shown below.
[1] A container for containing miso containing miso,
A container for storing bean paste, characterized in that the inner surface in contact with the miso is provided with protrusions having a number density of 40 to 3000/cm ² .
[2] The container for storing bean paste according to [1] above, wherein the proportion of the total area of the convex portions on the inner surface is 40% or more.
[3] The miso container according to [1] or [2] above, wherein the protrusions are patterned on the inner surface.
[4] The miso container according to any one of [1] to [3], wherein the number density is 50 to 450/cm ² .
[5] The miso container according to any one of [1] to [4] above, wherein the height of the protrusions is 30 to 150 μm.
[6] The container for containing miso according to any one of [1] to [5] above, wherein the container for containing miso is at least one bag container selected from a three-sided bag, a gusset bag and a self-supporting bag. .
[7] The miso container according to [6] above, which has a zipper at the opening of the bag.
[8] The container for storing bean paste according to any one of [1] to [5] above, wherein the container for storing bean paste is a cup container.
[9] The container for storing bean paste according to any one of [1] to [7] above, wherein the container for storing bean paste is made of resin.
[10] A resin film used for manufacturing the miso container according to [6] above,
A resin film for forming a miso container, characterized by comprising, on one side, a convex resin layer having convexities with a number density of 40 to 3000/cm ² .
[11] The resin film for forming a miso container according to [9] above, wherein the proportion of the total area of the convex portions on the plane of the convex resin layer is 40% or more.
[12] The resin film for forming a miso container according to [10] or [11] above, wherein the height of the projections is 30 to 150 μm.
[13] The resin film for forming a miso container according to any one of [10] to [12] above, which comprises another resin layer on the side of the convex resin layer on which the convex is not present.
[14] A product containing miso, comprising: the container for containing miso according to any one of [1] to [9] above; and miso contained in the container for containing miso.

According to the present invention, when the semi-solid miso filled and stored in the container for storing miso is taken out for cooking or transferring, particularly when taking out the miso near the inner surface of the container, a part of the miso is It is possible to suppress the miso from adhering to and remaining on the inner surface. Therefore, for example, when trying to use up the miso in the container, it is possible to eliminate the need for recovering work such as rubbing the inner surface of the container. In addition, after the miso is used up, it may be washed with water before disposal, but since there is no or very little miso attached or remaining, the amount of water used for washing can be reduced. .
In the present invention, the material of the container is not limited as long as the number density of the protrusions is 50 to 3000/cm ² . In the case of 450 pieces/cm ² , a transparent container can be used, so that the contained miso or its residual state can be visually recognized without opening the container. Further, for example, when the container is a paper container or a resin container and is at least one bag container selected from a three-sided bag, a gusset bag, and a self-supporting bag, it is easier to fold than a bulky cup container. , after use, can be a small waste.
The resin film for forming a miso container of the present invention is suitable as a raw material for manufacturing a resin-made bag container, which is a miso container having the above effects.

FIG. 2(a) is a schematic perspective view showing an example (self-supporting bag) of the miso storage container of the present invention in a self-supporting state and (b) in a laid state. It is a schematic perspective view showing one example of miso-containing products of the present invention. Fig. 10 is a schematic perspective view showing another example (gusset bag) of the miso container of the present invention. Fig. 3 is a schematic perspective view showing another example (three-sided bag) of the miso container of the present invention. It is a schematic perspective view which shows the other example of the container for miso storage of this invention (folding bag). Fig. 2 is a schematic perspective view showing another example (cup container) of the miso container of the present invention. FIG. 4 is a schematic diagram illustrating a convex pattern on the inner surface of the miso container of the present invention. It is the schematic which illustrates the cross-sectional shape of the convex part in the inner surface of the container for miso of this invention. It is explanatory drawing which shows one example of the manufacturing method of the miso storage container (self-supporting bag) of this invention. It is explanatory drawing which shows one example of the manufacturing method of the miso storage container (gusset bag) of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows one example of the manufacturing method of the miso container (three-sided bag) of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows one example of the manufacturing method of the container for miso storage of this invention (joint-handed bag). It is an explanatory view showing one example of the manufacturing method of the miso storage container (cup container) of the present invention. FIG. 3 is a schematic view illustrating the cross-sectional structure of the protrusions in the protrusion resin layer that constitutes the resin film for forming a miso container of the present invention. FIG. 2 is an explanatory diagram showing a test method for evaluating the performance of the miso container-forming resin film of the present invention.

The "miso" according to the present invention is a semi-solid miso such as rice miso, barley miso, soybean miso, etc. dug out from a miso barrel, brewed miso, or a mixture of these miso, and is used as a liquid seasoning. Commercially available liquid miso is not included.

The structure of the miso container of the present invention is not particularly limited as long as it has projections formed with a specific number density on the inner surface that contacts the miso. For example, it can be a bag container, a cup container, a tube container, or the like. The material is also not particularly limited, and can be made of metal, glass, resin, paper, wood, or the like.

Examples of bag containers include the self-supporting bag 1 shown in FIG. 1, the gusset bag 2 shown in FIG. 3, the three-sided bag 3 shown in FIG. A two-sided bag (not shown) and the like can be mentioned. 1 to 5 are preferably manufactured using a film having a convex portion on one side. Although traces of crushing are visible, in the bag containers of FIGS. 1 to 5, only the projections on the inner surface of the container containing the miso are clearly shown.

The self-supporting bag 1 shown in FIG. 1 consists of a pair of body sheet 11 and bottom sheet 12 . The body sheet 11 is formed with seal portions 15 for sealing both side edges. The periphery of the bottom sheet 12 is sealed to the inside of the lower portions of the body sheets 11 to form seal portions 16 .
A plurality of protrusions 11e and a plurality of protrusions 12e are formed on the inner surfaces of the body sheet 11 and the bottom sheet 12, respectively.
As shown in FIG. 2, the product 100 containing miso is provided by providing the miso M housed in the self-supporting bag 1 .

The gusset bag 2 shown in FIG. 3 consists of a body sheet 21 and a pair of gusset sheets 22 on both side edges thereof. A seal portion 25 is formed by sealing the trunk sheet 21 and the pair of gusset sheets 22 . A plurality of protrusions 21e and a plurality of protrusions 22e are formed on the inner surfaces of the body sheet 21 and the gusset sheet 22, respectively.
The three-sided bag 3 shown in FIG. 4 consists of a pair of body sheets 31 . Both side edges are sealed to form a seal portion 35 , and a bottom portion is further sealed to form a seal portion 36 . A plurality of projections 31e are formed on the inner surface of the body sheet 31. As shown in FIG.
The folding bag 4 shown in FIG. 5 is composed of a trunk sheet 41 formed by forming one sheet into a tubular shape. The inside edges of the body sheet 41 are sealed to form a seal portion 45, and the bottom portion is sealed to form a seal portion 46. As shown in FIG. A plurality of projections 41e are formed on the inner surface of the trunk sheet 41. As shown in FIG.

The bag containers of FIGS. 1, 3 and 4 can be provided with a chuck (not shown) at the opening in order to ensure gas barrier properties.

Examples of the cup container include the cup container 5 shown in FIG. The cup container 5 shown in FIG. 6 has a side portion 51 , a bottom portion 52 , and an opening 55 facing the bottom portion 52 . A plurality of protrusions 51e and 52e are formed on the inner surfaces of the side surface portion 51 and the bottom surface portion 52, respectively. The cup container 5 has a rectangular (polygonal) bottom surface and opening, but the cup container is not limited to this, and the bottom and opening may be circular or elliptical.

A plurality of protrusions are formed on the inner surface of the miso container of the present invention. In the present invention, it is preferable that the convex portion is patterned as a whole. The term "patterned" means that at least adjacent protrusions on a straight line are preferably arranged at regular intervals.
(i) and (ii) of FIG. 7 illustrate "patterned protrusions" when a surface having protrusions is viewed from the front. As will be described later, the shapes and sizes of the plurality of protrusions on one surface may be the same or different, and are not limited to (i) and (ii).

The structure of the projections on the inner surface of the container is not particularly limited, and may have the cross-sectional shape of (a), (b), (c) or (d) in FIG. Among these, the projections having the cross-sectional shapes (a) and (b) are preferable because the effect of the present invention can be sufficiently obtained. The cross-sectional shape of the convex portion may be a shape similar to the above predetermined shape, and may be a cone shape, a truncated cone shape, a pyramid shape, a truncated pyramid shape, a dome shape, a horizontally long dome shape, or a vertically long dome shape. be able to.

In addition, the planar shape of the convex portion on the inner surface of the container (the shape when the surface having the convex portion on the inner surface of the container is viewed from the front) may be a circle, an ellipse, a polygon (triangle, quadrangle, etc.), a line (straight line, curve). etc.), letters (numbers, alphabets, etc.), and the like. Of these, circles, ellipses and polygons are preferred.
The height of the projections on the inner surface of the container is preferably 30-150 μm, more preferably 40-120 μm.
In the present invention, the plurality of protrusions may have the same shape and size, or may be different.

In the present invention, the number density of protrusions on the inner surface of the container is such that, for example, when semi-solid miso near the inner surface of the container is taken out, some of the miso is suppressed from adhering to and remaining on the inner surface. Therefore, it is 40 to 3000/cm ² , preferably 45 to 1000/cm ² , more preferably 50 to 450/cm ² . With such a number density and patterned protrusions, the above effect can be obtained with certainty. Further, the number of adjacent protrusions per unit length is not particularly limited, but is preferably 7 to 40/cm.

In addition, the total area of the convex portions on the inner surface of the container, that is, the ratio of the total area of the flat portions where all the convex portions are present when the inner surface of the container is viewed from the front is preferably 40% or more, more preferably 50%. ~80%. With such a ratio, the above effects are sufficiently exhibited.

Next, a method for manufacturing a bag container and a cup container, which are miso containers, will be described.

(1) Manufacturing method of bag container The raw material for manufacturing the bag container is not particularly limited, and can be resin, paper, metal or alloy, and can be appropriately selected depending on the application. A method for manufacturing a resin bag container and a method for manufacturing a resin cup container will be described below with reference to FIGS. 9 to 12 and FIG.
The bag container made of resin is preferably manufactured using a resin film for forming a miso container, which will be described later, as a raw material. The resin film for forming a miso container is a resin film provided with a convex resin layer having a plurality of convex portions on one side. to manufacture. To avoid complication, in FIG. 9, the projections 11e and 21a that should exist in the sealing margins 11a and 11b are omitted. 10 to 12 are the same.

(1-1) Self-supporting bag manufacturing method The self-supporting bag 1 shown in Fig. 1 is manufactured using, for example, a pair of body part sheet material 11A and bottom part sheet material 12A shown in Fig. 9. can be done.
The trunk sheet material 11A has a pair of band-like sealing margins 11a at the side edges and a sealing margin 11b extending upward toward the left and right ends at the bottom. The bottom sheet material 12A is bent upward in two and formed with a seal margin 12a extending upward toward the left and right ends at the bottom.
A plurality of protrusions 11e are formed on the opposing inner surfaces of the trunk sheet material 11A except for the seal margins 11a and 11b. In addition, the bottom sheet material 12A has a plurality of convex portions 12e formed on the upper surface side except for the seal portion 12a.
Then, the seal portion 15 is formed by thermally bonding the inner surfaces of the trunk portion sheet material 11A with the sealing margin 11a, and the sealing margin 11b of the trunk portion sheet material 11A and the sealing margin 12a of the bottom sheet material 12A are thermally bonded. Thus, the seal portion 16 is formed, and the self-supporting bag 1 composed of the body sheet 11 and the bottom sheet 12 is manufactured.

(1-2) Gusset Bag Manufacturing Method The gusset bag 2 shown in FIG. can be manufactured using
A pair of band-shaped seal margins 21a are formed on the side edges of the trunk sheet material 21A. A plurality of projections 21e are formed on one surface side of the body sheet material 21A except for the seal allowance 21a. Then, it is bent in two with one side facing inward.
A plurality of protrusions 22e are formed on one side of the gusset sheet material 22A except for a pair of strip-like seal margins 22a. Then, it is bent in two with one side facing outward.
Then, a pair of gusset sheet materials 22A are inserted on the inner surface side of the trunk sheet material 21A folded in two. Then, the sealing portion 25 is formed by thermally bonding the sealing portion 21a of the body portion sheet material 21A and the sealing portion 22a of the gusset sheet material 22A, and the gusset bag 2 comprising the body portion sheet 21 and the gusset sheet 25 is manufactured. be done.

(1-3) Manufacturing method of three-sided bag The three-sided bag 3 shown in FIG. 4 can be manufactured using, for example, a pair of trunk sheet materials 31A shown in FIG.
A pair of band-like seal margins 31a are formed on the side edges and the bottom of the trunk sheet material 31A. A plurality of protrusions are formed on one side of the trunk sheet material 31A except for the seal allowance 31a. Then, they are overlapped with one side facing inside.
Then, the sealing margins 31a of the body sheet material 31A are thermally bonded to each other to form the seal portion 35, and the three-sided bag 3 composed of the pair of body sheets 31 is manufactured.

(1-4) Manufacturing method of folding bag The folding bag 4 shown in FIG. 5 can be manufactured using, for example, one body sheet material 41A shown in FIG.
A pair of band-like seal margins 41a and 41b are formed on both side edges and bottom of a piece of trunk sheet material 41A. A plurality of protrusions are formed on one surface side of the body sheet material 41A except for the seal margins 41a and 41b. Then, it is formed into a cylindrical shape with one surface side inside, and the inner surfaces of the seal margin 41a are thermally bonded to each other to form the seal portion 45. As shown in FIG. Further, the seal portion 46 is formed by heat-bonding the seal margins 41b of the bottom portion, and the joint bag 4 is manufactured.

(2) Method for manufacturing cup container The raw material for manufacturing the cup container is not particularly limited, and may be resin, paper, metal or alloy, and can be appropriately selected depending on the application.
A cup container made of resin can be manufactured, for example, using a smooth resin sheet and a mold for forming a container-shaped cavity. 13A and 13B are schematic diagrams showing a method of manufacturing a resin container, which is the cup container shown in FIG. The mold is composed of an upper mold 80 and a lower mold 90, and the side surface 80a and the bottom surface 80b of the upper mold 80 are provided with a plurality of irregularities for forming a plurality of protrusions on the smooth resin sheet 5A. . First, the smooth resin sheet 5A is heated and set in a vacuum forming machine equipped with a mold, and then the upper mold 80 is pressed to seal the resin sheet 5A between the upper mold 80 and the lower mold 90. Then, the resin sheet 5A is formed by vacuum suction from a vacuum hole (not shown). After that, it is cooled and the mold is opened. As a result, the cup container 5 having the plurality of projections 51e and 52e on the inner surfaces of the side surface portion 51 and the bottom surface portion 52, respectively, is manufactured.
In the case of a metal cup container, press molding using a mold having a plurality of unevenness on the upper mold can form a plurality of protrusions on the inner surface to manufacture the metal cup container.

The resin film for forming a miso container of the present invention is used for the production of the miso container of the present invention, and has a protrusion resin layer on one side thereof which has protrusions having a number density of 50 to 3000/cm ² . It is a film comprising The resin film for forming a miso container of the present invention may be a single-layer film consisting only of a convex resin layer, or a multi-layer film (laminated film) consisting of this convex resin layer and one or more other layers. film).

The cross-sectional shape of the convex resin layer is not particularly limited, and may have the cross-sectional shape of (a), (b), (c) or (d) in FIG. Among these, the projections having the cross-sectional shapes (a) and (b) are preferable because the effect of the present invention can be sufficiently obtained. The cross-sectional shape of the convex portion may be a shape similar to the above predetermined shape, and may be a cone shape, a truncated cone shape, a pyramid shape, a truncated pyramid shape, a dome shape, a horizontally long dome shape, or a vertically long dome shape. be able to.
The cross-sectional structure of the convex resin layer is not particularly limited, and may be (A), (B) or (C) in FIG.
FIG. 14A shows a cross-sectional structure having a convex portion e1 on the upper side and a corresponding concave portion er on the lower side.
(B) and (C) of FIG. 14 show a cross-sectional structure having protrusions e1 and e2 only on the upper side. (B) is a cross-sectional structure of the convex portion e3 made of a solid body, and (C) is a cross-sectional structure of the convex portion e3 including the hollow portion eh.

Further, the planar shape of the protrusions in the protrusion resin layer (the shape when the protrusion resin layer is viewed from the front) may be a circle, an ellipse, a polygon (triangle, quadrangle, etc.), a line (straight line, curve, etc.), or a character. (numbers, alphabets, etc.) and so on. Of these, circles, ellipses and polygons are preferred.
The height of the protrusions in the protrusion resin layer is preferably 40 to 120 μm, more preferably 50 to 110 μm.
In the present invention, the plurality of protrusions may have the same shape and size, or may be different.

In the present invention, the number density of protrusions in the protrusion resin layer is determined, for example, by taking out the semi-solid miso that is in contact with the surface having protrusions of the protrusion resin layer without part of it adhering or remaining. 40 to 3000/cm ² , preferably 45 to 1000/cm ² , more preferably 50 to 450/cm ² . Further, the number of adjacent protrusions per unit length is not particularly limited, but is preferably 7 to 40/cm.

In addition, the total area of the protrusions in the protrusion resin layer, that is, the ratio of the total area of the planar portions where all the protrusions are present when the protrusion resin layer is viewed from the front is preferably 40% or more, more preferably. is 50-80%.

When the resin film for forming a miso container of the present invention is a single-layer film, it consists only of the convex resin layer. The resin contained is not particularly limited, but a polyolefin resin is preferable. Polyolefin resins include, for example, low density polyethylene, linear low density polyethylene, medium density polyethylene, high density polyethylene, polypropylene, propylene/ethylene copolymer, ethylene/vinyl acetate copolymer, ethylene/acrylic acid copolymer. Examples include resins such as coalescence, ethylene/methacrylic acid copolymer, ethylene/methyl acrylate copolymer, ethylene/ethyl acrylate copolymer, ethylene/methyl methacrylate copolymer, and ionomer. Among these, linear low-density polyethylene (LLDPE) is preferable from the viewpoints of shape retention of convex portions, impact resistance when used as a bag container, seal stability, and the like. The convex resin layer may be composed of polyolefin resin only, or may be composed of polyolefin resin and conventionally known resin additives contained in food packaging materials.

When the resin film for forming a miso container of the present invention is a multi-layer film, it comprises a projecting resin layer and one or more other layers disposed on the projecting side of the projecting resin layer. . Thus, a film composed of a plurality of layers is preferable from the viewpoint of gas barrier properties, bag self-supporting property, and the like.

In the case of a two-layer type multilayer film, for example, the convex resin layer is a layer derived from a polyolefin resin (preferably linear low-density polyethylene), and the other layer is derived from a biaxially oriented polyamide (ONY). Each of the layers can be provided. Biaxially oriented polyamide (ONY) can impart gas barrier properties to the multilayer film.

In the case of a three-layer type multilayer film, for example, the convex resin layer is a layer derived from linear low density polyethylene (LLDPE), and the convex resin layer is a layer derived from biaxially oriented polyamide (ONY). , and layers derived from biaxially oriented polyethylene terephthalate (OPET). Biaxially oriented polyamide (ONY) and biaxially oriented polyethylene terephthalate (OPET) can impart gas barrier properties to the multilayer film. In this embodiment, the thickness of each layer is 30 to 150 μm for the LLDPE layer, 13 to 17 μm for the ONY layer, and 10 to 14 μm for the OPET layer, from the viewpoint of formability, shape retention, and gas barrier properties of the bag container. More preferably, the LLDPE layer is 50-120 μm, the ONY layer is 14-16 μm, and the OPET layer is 11-13 μm.

In the case of a four-layer type multilayer film, for example, a layer derived from biaxially oriented polypropylene (OPP) may be adhered to the OPET layer of the three-layer type multilayer film. By using a multilayer film having such a structure, especially in the case of a self-supporting bag, it is possible to increase the feeling of stiffness and make it easier to stand on its own.
In this embodiment, the thickness of each layer is preferably 30 to 150 μm for the LLDPE layer, 13 to 17 μm for the ONY layer, 10 to 14 μm for the OPET layer, 27 to 33 μm for the OPP layer, and 50 to 120 μm for the LLDPE layer. More preferably, the ONY layer is 13-17 μm, the OPET layer is 10-14 μm, and the OPP layer is 28-32 μm.

The method for producing the miso container-forming resin film of the present invention is usually selected according to the structure of the film, and is not particularly limited. When forming patterned protrusions on one side of the film, embossing, debossing, blank pressing, or the like can be applied. Among these, embossing by thermoforming using an embossing roll is preferred. When the resin film for forming a miso container of the present invention is a multi-layer film, the above processing may be applied to one side of the multi-layer film on which the protrusions are not formed. , the formed convex portion may not be clear. That is, basically, the sealant layer on which the protrusions are formed and the next layer are dry-laminated. When the sealant layer and the next layer are extrusion-laminated, heating at about 300° C. is required, and there is a risk that the raised portions (embossed) may disappear due to the heat.
Therefore, when producing a miso container-forming resin film composed of a multi-layer film, it is preferable to apply a method of forming patterned projections on a single-layer film and then integrating it with other films. .
On the other hand, layers not containing a sealant layer are preferably extrusion-laminated in order to increase thickness and pinhole resistance.

When producing a miso container-forming resin film composed of a multilayer film having gas barrier properties, it is preferable to use a film having gas barrier properties as described above. A dry lamination liquid containing a material that imparts properties may be used. Moreover, in order to suppress photodegradation of miso to be stored, a lamination solution containing a material that allows light such as ultraviolet rays to penetrate may be used.

The production and evaluation of the miso container-forming resin film and the production example of the self-supporting bag using the miso container-forming film will be specifically described below.

1. Manufacture and evaluation of resin film for forming miso container On one side surface of a low-density polyethylene film (thickness: 60 μm) manufactured by Toyobo Co., Ltd., a convex portion having a rhombic planar shape and a truncated pyramidal cross-sectional shape, or An embossed product with a circular planar shape and dome-shaped cross-sectional convex portions arranged at equal intervals, or an unprocessed film that is commercially available, Hanamaruki Co., Ltd. "Additive-free koji miso" ” (trade name, hereinafter referred to as “miso A”) or “Mixed Miso” manufactured by Marsanai Co., Ltd. (trade name, hereinafter referred to as “miso B”). rice field.

(Test method for residual adhesion)
As shown in FIG. 15, using the same miso container-forming resin films F1 and F2, a film having a thickness of about 8 mm was formed in an area of about 100 mm x about 100 mm between the surfaces having convex portions. Miso was sandwiched between the two and left at room temperature for 30 minutes. Thereafter, the film F2 was peeled off by turning it upside down, and the residual adhesion of miso on the surface of the film F2 having the convex portions was visually observed and evaluated according to the following criteria. Two untreated resin films were also used in the same manner and the same test was conducted.
◯: The rate of residual adhesion area in the area where miso was placed was less than 5%.
x: The ratio of remaining adhesion area in the area where miso was placed was 40% or more.

Comparative example 1
The untreated film was evaluated for residual adhesion. Table 1 shows the results.

Comparative example 2
Using an embossing roll having an uneven pattern, on one side of the untreated film, two diagonal lengths of about 2 mm and about 3 mm, respectively. A miso container-forming resin film having the shape of No. ² was produced. The sticking residual property was evaluated for this miso container-forming resin film. Table 1 shows the results.

Example 1
Using an embossing roll having an uneven pattern, a miso container is formed by forming approximately 60 round protrusions with a diameter of approximately 500 μm on one side of the untreated film at even intervals of approximately 60/cm ² . A resin film for The sticking residual property was evaluated for this miso container-forming resin film. Table 1 shows the results.

Example 2
Using an embossing roll having an uneven pattern, a miso container is formed by forming approximately 120 circular protrusions/ ^cm2 with a diameter of approximately 450 µm on one side of the untreated film at regular intervals. A resin film for The sticking residual property was evaluated for this miso container-forming resin film. Table 1 shows the results.

Example 3
Using an embossing roll having a pattern of protrusions and recesses, on one side of the untreated film, approximately 230 pieces/cm of diamond-shaped protrusions having two diagonal lengths of about 600 μm and about 800 μm, respectively, are evenly spaced. A miso container-forming resin film having the shape of No. ² was produced. The sticking residual property was evaluated for this miso container-forming resin film. Table 1 shows the results.

Example 4
Using an embossing roll having an uneven pattern, on one side of the untreated film, two diagonal lengths of about 400 μm and about 550 μm, respectively. A miso container-forming resin film having the shape of No. ² was produced. The sticking residual property was evaluated for this miso container-forming resin film. Table 1 shows the results.

Example 5
Using an embossing roll having an uneven pattern, circular protrusions with a diameter of about 150 μm are formed on one side of the untreated film so that the number of circular protrusions is about 2860/cm ² at equal intervals to form a miso container. A resin film for The sticking residual property was evaluated for this miso container-forming resin film. Table 1 shows the results.

2. Manufacture of miso container (self-supporting bag) The resin film for miso container formation obtained in Example 3 (hereinafter referred to as "first film"), the following various films and adhesives are used to perform dry lamination. A multi-layered film (resin film for forming a miso container) used for forming a self-supporting bag was produced, and then, using this multi-layered film, a container for miso containing the self-supporting bag shown in FIG. 1 was manufactured.
(1) Biaxially stretched polyamide film manufactured by Toyobo Co., Ltd. (thickness: 15 μm)
(2) Biaxially oriented polyethylene terephthalate film manufactured by Toyobo Co., Ltd. (thickness: 12 μm)
(3) Biaxially oriented polypropylene film manufactured by Toyobo Co., Ltd. (thickness: 30 μm)

Example 6
With an adhesive between each film, the first film, the polyamide film, and the polyethylene terephthalate film are stacked in this order from above, with the convex portion on the surface side (upper surface side), and then pressed to increase the thickness. A multilayer film (hereinafter referred to as “multilayer film (L1)”) having a thickness of 117 μm was obtained. This multi-layer film L1 was cut and adjusted into respective shapes of a body portion sheet material 11A and a bottom portion sheet material 12A as shown in FIG. Then, the bottom sheet material 12A is folded in two, the sealing margin 11b of the trunk sheet material 11A and the sealing margin 12a of the bottom sheet material 12A are thermally bonded, and the inner surface side (the side having the convex portion) of the trunk sheet material 11A is formed. ) are thermally bonded to each other with the seal margin 11a to form the seal portion 16 and the seal portion 15, respectively, and have a convex portion derived from the first film on the inner surface, and have a size of 200 mm in width and 200 mm in height. and a bottom sheet with a bottom gusset of 50 mm×2 (see FIG. 1).

Example 7
With an adhesive placed between each film, the first film, the polyamide film, the polyethylene terephthalate film, and the polypropylene film are stacked in this order from the upper side with the convex portion on the surface side (upper surface side), and then pressed. Thus, a multilayer film (hereinafter referred to as “multilayer film (L2)”) having a thickness of 107 μm was obtained.
Thereafter, using this multilayer film (L2), the same operation as in Example 6 was performed to obtain a self-supporting bag composed of a body sheet and a bottom sheet, which had projections derived from the first film on the inner surface. rice field.

It should be noted that the present invention is not limited to the specific examples described above, and various modifications can be made within the scope of the present invention according to the purpose and application. For example, the miso container-forming resin films of Examples 1 to 5 are formed into a container shape along the inner surface of the container having the shape shown in FIG. 6 and having a flat inner surface without unevenness. A container protector obtained by processing can be used.

The container for containing miso of the present invention has a problem that when the semi-solid miso filled and contained therein is removed for cooking or transfer, particularly when removing the miso near the inner surface of the container, the Since the miso has an effect of suppressing the adhesion and remaining of the miso on the inner surface, it is possible to provide a miso-containing product that can simplify the disposal work after the miso is used up.
In addition, the container for storing miso of the present invention is a resin that suppresses a part of miso from adhering to and remaining on the inner wall or bottom surface when removing miso for cooking after transferring only miso from a commercially available product containing miso. It can also be made into a container.
The resin film for forming a miso container of the present invention is a raw material for manufacturing a resin-made bag container (a three-sided bag, a gusset bag, a self-supporting bag, etc.), which is a miso container that fully exhibits the effects of the present invention. Suitable as a material.

1: Miso storage container (self-supporting bag)
2: Miso storage container (gusset bag)
3: Miso storage container (three-sided bag)
4: Miso storage container (two-sided bag)
5: Miso storage container (cup container)
11e, 21e, 31e, 41e, 51e: Convex part 100: Product containing miso M: Miso

Claims (14)

A container for containing miso containing miso,
A container for storing bean paste, characterized in that the inner surface in contact with the miso is provided with protrusions having a number density of 40 to 3000/cm ² . 2. The container for storing bean paste according to claim 1, wherein the proportion of the total area of the protrusions on the inner surface is 40% or more. 3. The miso container according to claim 1, wherein the protrusions are patterned on the inner surface. The container for storing bean paste according to any one of claims 1 to 3, wherein the number density is 50 to 450/cm ² . The container for storing miso according to any one of claims 1 to 4, wherein the height of the convex portion is 30 to 150 µm. 6. The miso storage container according to any one of claims 1 to 5, wherein the miso storage container is at least one bag container selected from a three-sided bag, a gusset bag and a self-supporting bag. 7. The miso container according to claim 6, wherein the opening of the bag is provided with a zipper. The miso container according to any one of claims 1 to 5, wherein the miso container is a cup container. The miso container according to any one of claims 1 to 8, wherein the miso container is made of resin. A resin film used for manufacturing the miso container according to claim 6,
A resin film for forming a miso container, characterized by comprising, on one side, a convex resin layer having convexities with a number density of 40 to 3000/cm ² . 11. The resin film for forming a miso container according to claim 10, wherein the projections occupy 40% or more of the total area in the plane of the projection resin layer. 12. The resin film for forming a miso container according to claim 10 or 11, wherein the height of said protrusions is 30 to 150 μm. 13. The resin film for forming a miso container according to any one of claims 10 to 12, further comprising another resin layer on a side of the convex resin layer on which the convex is not present. A product containing miso, comprising: the container for containing miso according to any one of claims 1 to 9; and miso contained in the container for containing miso.

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