JP2022152520A - Package - Google Patents

Abstract

To provide a package that can be bent and fixed compactly and can be sealed again.SOLUTION: A package 101 includes at least an upper part 131 as a first edge, and a bottom part 132 facing the upper part 131 as a second edge. The package 101 includes a hook-and-loop fastener part 180 arranged extending in a direction of connecting the upper part 131 and the bottom part 132. The hook-and-loop fastener part 180 includes a hook-shaped engagement element 181. As a result, the package 101 can be bent and fixed compactly and can be sealed again.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a packaging container having a resealing function.

In recent years, the demand for packages with a resealing function is increasing due to the increase in the capacity of products and the increase in the number of applications where the contents are used little by little. Japanese Patent Laid-Open No. 2002-100001 discloses a configuration that achieves a resealing function by using a chuck member having a concave-convex fitting portion.

However, a packaging container having a fitting portion on the inner surface of the bag as in Patent Document 1 requires a space for storage because the shape of the bag cannot be changed even if the content decreases with use. It is sufficient if the packaging container can be folded and fixed in a compact manner. It was not possible to fit them together because they faced each other or concave shapes (female shapes) faced each other.

JP 2017-77916 A

SUMMARY OF THE INVENTION An object of the present invention is to provide a packaging container that can be folded, fixed compactly, and resealed.

The present invention solves the above problems by means of the following solutions. In order to facilitate understanding, reference numerals corresponding to the embodiments of the present invention are used for explanation, but the present invention is not limited to these.

A first invention is a packaging container (101) having at least a first edge (131) and a second edge (132) facing the first edge (131), wherein the first edge (131) and the second edge (132), the hook-and-loop fastener portion (180) includes a hook-shaped engaging element (181). (101).

In a second invention, in the packaging container (101) according to the first invention, a plurality of the hook-and-loop fastener portions (180) are arranged side by side in a direction intersecting the extending direction of the hook-and-loop fastener portions (180). A packaging container (101) characterized by:

A third invention is the packaging container (101) according to the first invention or the second invention, wherein the loop stiffness of the hook-and-loop fastener part (180) alone is 60 mm in loop length and 3.3 mm/s in pushing speed. , 7000 mN or less under the condition of pressing and holding time of 3 s.

A fourth invention is the packaging container (101) according to any one of the first invention to the third invention, wherein the hook-and-loop fastener part (180) has a columnar engaging element (182) rising from the fastener surface. ) are further arranged in a plurality.

A fifth invention is the packaging container (101) according to any one of the first invention to the fourth invention, wherein a laminated film (160) comprising at least a base material layer (161) and a sealant layer (164) A storage section (102) capable of storing contents, and a storage section (102) formed around the storage section (102). A packaging container (101) comprising: sealing portions (141, 142, 143); and a portion to be sealed to be sealed after containing the contents.

According to the present invention, it is possible to provide a packaging container that can be folded and fixed compactly and that can be resealed.

It is a top view of packaging container 101 of a 1st embodiment. FIG. 2 is a cross-sectional view of the packaging container 101 taken along the arrow AA in FIG. 1; 3 is a cross-sectional view of a laminated film 160 used in the packaging container 101 of this embodiment; FIG. 2 is a perspective view of a hook-and-loop fastener part 180 in the form of hook-and-loop fastener A. FIG. FIG. 3 is a plan view of a hook-and-loop fastener portion 180 in the form of a hook-and-loop fastener A; FIG. 6 is a cross-sectional view of the hook-and-loop fastener portion 180 in the form of hook-and-loop fastener A cut along the arrow BB in FIG. FIG. 6 is a cross-sectional view of the hook-and-loop fastener portion 180 in the form of the hook-and-loop fastener A cut at the position of arrows CC in FIG. 4 is a diagram illustrating dimensions of hook-like engaging elements 181 and column-like engaging elements 182 in the form of hook-and-loop fastener A. FIG. FIG. 9 is a diagram showing each dimension of d1 to d11 shown in FIGS. 5 and 8; FIG. FIG. 3 is a perspective view of a hook-and-loop fastener part 180 in the form of hook-and-loop fasteners B and C; FIG. 3 is a plan view of a hook-and-loop fastener portion 180 in the form of hook-and-loop fasteners B and C; FIG. 12 is a cross-sectional view of the hook-and-loop fastener portion 180 in the form of hook-and-loop fasteners B and C, taken at the position of arrows GG in FIG. 11; FIG. 12 is an enlarged cross-sectional view of the hook-and-loop fastener portion 180 in the form of hook-and-loop fasteners B and C, cut at the position of arrows HH in FIG. 11; FIG. 14 is a diagram showing dimensions d1 to d10 shown in FIGS. 11 and 13; FIG. It is a figure which shows the state which opened the packaging container 101. FIG. It is a figure which shows the state which resealed the packaging container 101. FIG. It is a figure which shows the state which joined the hook-and-loop fastener part 180. FIG. FIG. 4 is a plan view showing an example of a loop stiffness measuring device; FIG. 19 is a cross-sectional view of the loop stiffness meter of FIG. 18 along line GG; FIG. 4 is a diagram for explaining a process of attaching a test piece to the loop stiffness measuring instrument; It is a figure for demonstrating the process of forming a loop part in a test piece. It is a figure for demonstrating the process of applying a load to the loop part of a test piece. It is a figure for demonstrating the process of applying a load to the loop part of a test piece. FIG. 3 is a diagram summarizing the results of evaluation of the ease of joining at the time of resealing by preparing samples of multiple types of packaging containers.

BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention will be described below with reference to the drawings.

(embodiment)
FIG. 1 is a plan view of the packaging container 101 of the first embodiment. In addition, in FIG. 1, the sealed area is shown by hatching, and the same is shown in the drawings of other embodiments.
FIG. 2 is a cross-sectional view of the packaging container 101 cut along the arrow AA in FIG.
1 and 2, each figure shown below is a schematic diagram, and the size and shape of each part may be exaggerated or omitted as appropriate for easy understanding. is shown. For example, in FIG. 2, only the base material layer 161 and the sealant layer 164 are illustrated, and other layers are omitted.
Also, in the following description, specific numerical values, shapes, materials, and the like are shown and described, but these can be changed as appropriate.

The packaging container 101 of the present embodiment, for example, is distributed and sold in a state in which various contents are contained. is. Note that the content may be of any type, such as solid, powder, or liquid.

(container body)
As shown in FIG. 1, the container body 106 of the packaging container 101 is a so-called flat pouch bag-like container sealed on four sides, and is made of a flexible laminated film (packaging material). ing. The laminated film forming the container body 106 includes a surface film (first packaging material) 121 forming a surface and a back film (second packaging material) 122 forming a back surface.

In this embodiment, the surface film 121 and the back film 122 are composed of substantially rectangular laminated films. A substantially rectangular shape is not limited to a geometrical rectangle, and includes a shape recognized as a rectangle in a general view. For example, any one or more of the side edges, the bottom edge or the top edge may include curvilinear portions. Also, the corners of the laminated film may be rounded in an outwardly convex arc shape.

Further, the surface film 121 and the back film 122 may be laminated films that are separate from each other before the formation of the container main body 106, or may be laminated films that are connected to each other. The connected laminated films are folded to form a front film 121 and a back film 122 .

In this embodiment, the container main body 106 is formed of a surface film 121 and a back film 122 which are individually constructed.
At the upper portion (first edge) 131 of the container main body 106, the upper portion of the surface film 121 and the upper portion of the back surface film 122 are joined by heat sealing (heat welding). As a result of this bonding, an upper sealing portion 141 is formed on the upper portion 131 of the container body portion 106 as a sealing portion for bonding the upper portion of the surface film 121 and the upper portion of the back film 122 .

At the side portion 133 of the container main body 106, the side portion of the surface film 121 and the side portion of the back film 122 are joined by heat sealing. As a result of this bonding, side sealing portions 143 are formed on the left and right side portions 133 of the container main body 106 as sealing portions for bonding the side portions of the surface film 121 and the side portions of the back film 122 . The left and right side seal portions 143 are formed such that their upper ends are continuous with the upper seal portion 141, and the vicinity of their lower ends are formed so as to be continuous with the bottom seal portion 142, which will be described later. ing.
The side seal portion 143 is provided with a notch 107 for separating the upper seal portion 141 of the container body 106 to form an opening OP (see FIG. 15).
The notch 107 is provided for separating the upper seal portion 141 from the container body portion 106 to open the packaging container 101 . The notch 107 is a notch provided on the upper end side of the side seal portion 143 and below the top seal portion 141 and substantially parallel to the top seal portion 141 . It is provided so as not to penetrate the housing portion 102 from the edge to the housing portion 102 side. An easy opening line such as a half-cut line may be provided instead of the notch 107 or together with the notch 107 .

At the bottom (second edge) 132 of the container main body 106, the bottom of the surface film 121 and the bottom of the back film 122 are joined. In this manner, a bottom seal portion 142 is formed on the bottom portion 132 of the container main body portion 106 .
The containing portion 102 is a space inside the container body portion 106 that can contain contents. When the notch 107 is used to separate the upper seal portion 141 from the container body portion 106 and the packaging container 101 is opened, the upper portion of the accommodating portion 102 is opened.

In the container body 106, before the contents are accommodated, at least one sealing portion among the top sealing portion 141, the bottom sealing portion 142, and the side sealing portion 143 is in an unsealed state and is to be sealed. After the contents are accommodated in the container 102 from the seal-planned portion, the seal-planned portion is heat-sealed (bonded) to hermetically seal the contents.

(Laminated film)
FIG. 3 is a cross-sectional view of the laminated film 160 used for the packaging container 101 of this embodiment.
The surface film 121 and the back film 122 forming the container main body 106 are made of the laminated film 160 . As described above, the container main body 106 is made by heat-sealing the laminated film 160 forming the pair of the surface film 121 and the back surface film 122 . For this reason, the laminated film 160 is provided with at least a base layer 161 and a sealant layer 164 having a sealing property on a portion to be the inner side of the container. Moreover, a plurality of substrate layers may be provided, and the sealant layer may be composed of a plurality of layers.
In the container main body 106 of the present embodiment, the base material layer 161 serving as a printing base material is provided on the outer side of the container with respect to the sealant layer 164 . Note that the laminated film 160 may include other layers 163 as necessary to impart various functions depending on the application.

The substrate layer 161 may be, for example, an oriented polyethylene terephthalate film, a silica-deposited oriented polyethylene terephthalate (PET) film, an alumina-deposited oriented polyethylene terephthalate film, an oriented polyamide film, an oriented polypropylene film, or a composite obtained by laminating two or more of these films. A film can be used.

Preferably, the substrate layer 161 is biaxially stretched. As a result, the molecules forming the base layer 161 are aligned in the drawing direction by the drawing treatment, and the base layer 161 exhibits excellent dimensional stability. In addition, the biaxial stretching process can impart an easy-open property to the base material layer 161 .

The thickness of such a base layer 161 is, for example, about 10 to 50 μm. In this case, the product cost can be suppressed while satisfying the heat resistance required for the container main body 106 . Note that the base material layer 161 of the present embodiment also functions as the outermost layer of the laminated film 160 when the container main body 106 is formed by making the bag.

Further, as shown in FIG. 3, in the present embodiment, a pattern layer 162 including a pattern is laminated on the surface of the base material layer 161 that faces the inside of the container. Here, the pattern is a recording object of various forms that can be recorded or printed on the base material layer 161, and is not particularly limited, and includes drawings, letters, patterns, patterns, symbols, patterns, marks, and the like. Widely included. The picture layer 162 is laminated on the base material layer 161 as necessary, and the picture layer 162 may not be provided on the base material layer 161. In that case, for example, a label may be attached. Various displays may be performed.

In this embodiment, the pattern layer 162 is applied to the inner surface of the base material layer 161, not the outer surface of the base material layer 161, which is the outer side of the container. In this case, since the pattern layer 162 has excellent abrasion resistance, it is possible to effectively prevent disappearance due to rubbing or the like, and to effectively prevent falsification of the pattern. Further, the base layer 161 has transparency so that the design layer 162 laminated on the inner surface of the base layer 161 can be visually recognized through the base layer 161 when the bag is made into the packaging container 101 . preferably.

As described above, the sealant layer 164 is provided for laminating and sealing the edges by overlapping the two laminated films 160 and heat-sealing the vicinity of the opposing edges. Further, in the present embodiment, the sealant layer 164 is arranged in the laminated film 160 on the innermost side of the container when the bag is made into the container main body 106 .

As such a sealant layer 164, films made of polyolefin resins such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ethylene-propylene block copolymer, etc., conventionally known easy peel films, and the like can be used. The sealant layer 164 may be configured as a single layer with a film made of these materials, or the sealant layer 164 may be configured as multiple layers.

Further, when the packaging container 101 is used as a container for a microwave oven, heat resistance is required, so the sealant layer 164 is mainly an unstretched polypropylene layer (CPP layer) containing unstretched polypropylene (CPP), or It is preferred to have a linear low density polyethylene layer (LLDPE layer) comprising primarily linear low density polyethylene (LLDPE).

The thickness of the sealant layer 164 is preferably 30 μm or more. Also, the thickness of the sealant layer 164 is preferably 200 μm or less. In this case, the packaging container 101 is excellent in impact resistance against dropping that may occur in the course of distribution, and is also excellent in handleability such as easiness of filling and refilling of the contents.

On the other hand, the other layer 163 can be provided to supplement various functions depending on the application, and its arrangement position can be appropriately selected. The other layer 163 may have vapor barrier properties to prevent permeation of water vapor and gas barrier properties to prevent permeation of gases such as oxygen gas so that the contents can be stored for a long period of time. Further, the other layer 163 may have a function of sufficiently enhancing the concealability so that the contents of the packaging container 101 cannot be seen, in order to increase the consumer's willingness to buy. Therefore, the other layer 163 can be exemplified by a gas barrier layer, a light shielding layer, and the like.

Examples of gas barrier layers include metal foils such as aluminum foils, vapor deposition layers, and the like. The vapor deposition layer may be provided on the base material layer or may be provided on the sealant layer.
The vapor deposition layer may be a metal vapor deposition layer consisting of a metal vapor deposition layer such as aluminum, or a transparent vapor deposition layer consisting of an inorganic oxide vapor deposition layer such as aluminum oxide or silicon oxide.

Also, the gas barrier layer may include a vapor deposition layer and an organic coating layer formed on the vapor deposition layer.
The organic coating layer is formed by applying a barrier coating agent onto the deposited film and solidifying it. The barrier coating agent is composed of metal alkoxide, hydroxyl-containing water-soluble resin, optionally added silane coupling agent, sol-gel catalyst, acid, and the like.

The metal alkoxide has the general formula R1 _n M(OR ² ) _m (wherein R ₁ and R ₂ represent an organic group having 1 to 8 carbon atoms, M represents a metal atom, and n is represents an integer of 0 or more, m represents an integer of 1 or more, and n+m represents the valence of M.) at least one metal alkoxide represented by M, the metal atom of the metal alkoxide represented by M Examples thereof include silicon, zirconium, titanium, aluminum, and the like. For example, it is preferable to use an alkoxysilane in which M is Si.

Examples of the above alkoxysilane include those represented by the general formula Si(ORa) ₄ (wherein Ra represents a lower alkyl group). In the above, as Ra, a methyl group, an ethyl group, an n-propyl group, an n-butyl group and the like are used. Specific examples of the above alkoxysilanes include tetramethoxysilane Si(OCH ₃ ) ₄ , tetraethoxysilane Si(OC ₂ H ₅ ) ₄ , tetrapropoxysilane Si(OC ₃ H ₇ ) 4 and tetrabutoxysilane Si. (OC ₄ H ₉ ) ₄ , etc. can be used. The above alkoxides may be used in combination of two or more.

As the silane coupling agent, one having a reactive group such as a vinyl group, an epoxy group, a methacrylic group, an amino group, or the like can be used. Particularly preferred are organoalkoxysilanes having an epoxy group, such as γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropylmethyldimethoxysilane, γ-glycidoxypropyldimethylmethoxysilane, γ-glycidoxysilane. Propyltriethoxysilane, γ-glycidoxypropylmethyldiethoxysilane, γ-glycidoxypropyldimethylethoxysilane, β-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, or the like can be used. The above silane coupling agents may be used singly or in combination of two or more.

Among them, the cross-linking density of the cured film of the organic coating layer using bifunctionality such as γ-glycidoxypropylmethyldimethoxysilane and γ-glycidoxypropylmethyldiethoxysilane is higher than that in the system using trialkoxysilane. lower than the crosslink density. Therefore, it becomes a flexible cured film while being excellent as a film with gas barrier properties and hot water treatment, and has excellent flex resistance. Hard to deteriorate.

As the hydroxyl group-containing water-soluble resin, a polyvinyl alcohol resin or an ethylene/vinyl alcohol copolymer can be used alone, or a polyvinyl alcohol resin and an ethylene/vinyl alcohol copolymer can be used in combination. can be used.

As the light shielding layer, a metal foil such as aluminum or a metal deposition layer can be exemplified.
Note that the other layer 163 may be formed by laminating two or more layers of the above functional layers.

The base layer 161 can also be made of paper. When the base material layer 161 is made of paper, the pattern layer 162 may be provided on the outer surface side of the base material layer 161, which is the outer side of the container. A basis weight of paper used for the base material layer 161 is preferably 30 g/m ² or more. Moreover, the basis weight of the paper used for the base material layer 161 is preferably 150 g/m ² or less. Moreover, the basis weight of the paper used for the base material layer 161 is more preferably 130 g/m ² or less. Moreover, the basis weight of the paper used for the base material layer 161 is more preferably 100 g/m ² or less.

As shown in FIG. 3, in the present embodiment, between the substrate layer 161 provided with the pattern layer 162 and the substrate layer 161 provided with the gas barrier layer as the other layer 163, and as the other layer 163 A bonding layer 165 is provided between the base material layer 161 provided with the gas barrier layer and the sealant layer 164 . As this bonding layer 165, for example, an adhesive generally used in a known dry lamination method can be used, for example, a polyvinyl acetate adhesive, a polyacrylic acid ester adhesive, a cyanoacrylate adhesive, or the like. , ethylene copolymer-based adhesives, cellulose-based adhesives, polyester-based adhesives, polyamide-based adhesives, amino resin-based adhesives, epoxy-based adhesives, polyurethane-based adhesives, and the like can be used.

Alternatively, an adhesive resin layer generally used in an extrusion lamination method (sandwich lamination method) can be used as the bonding layer 165 . Thermoplastic resins that can be used for the adhesive resin layer include polyethylene-based resins, polypropylene-based resins, or cyclic polyolefin-based resins, or copolymer resins, modified resins, or mixtures (including alloys) containing these resins as main components. ) can be used. Polyolefin resins include, for example, low density polyethylene (LDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE), linear low density polyethylene (LLDPE), polypropylene (PP), metallocene catalyst Ethylene-α-olefin copolymer, ethylene-polypropylene random or block copolymer, ethylene-vinyl acetate copolymer (EVA), ethylene-acrylic acid copolymer (EAA), ethylene-α-olefin copolymer polymerized using Ethyl acrylate copolymer (EEA), ethylene-methacrylic acid copolymer (EMAA), ethylene-methyl methacrylate copolymer (EMMA), ethylene-maleic acid copolymer, ionomer resin, adhesion between layers In order to improve the above, it is possible to use an acid-modified polyolefin resin obtained by modifying the above polyolefin resin with an unsaturated carboxylic acid such as acrylic acid, methacrylic acid, maleic acid, maleic anhydride, fumaric acid, or itaconic acid. can. Moreover, the resin etc. which graft-polymerized or copolymerized unsaturated carboxylic acid, unsaturated carboxylic acid anhydride, and an ester monomer can be used for polyolefin resin. These materials can be used singly or in combination of two or more. Cyclic polyolefins such as ethylene-propylene copolymers, polymethylpentene, polybutene and polynorbonene can be used as cyclic polyolefin resins. These resins can be used singly or in combination.
In this case, there may be an anchor coat layer (AC layer) between the substrate layer and, for example, an adhesive generally used in a known dry lamination method can be used, such as polyvinyl acetate adhesives, polyacrylate adhesives, cyanoacrylate adhesives, ethylene copolymer adhesives, cellulose adhesives, polyester adhesives, polyamide adhesives, amino resin adhesives, epoxy adhesives , a polyurethane-based adhesive, or the like can be used.

As a preferred embodiment of the laminated film 160, the following layer configurations can be exemplified in order from the substrate layer 161 side.
(A) First substrate layer/sealant layer (B) First substrate layer/second substrate layer/sealant layer (C) First substrate layer/second substrate layer/third substrate layer/sealant As a specific example of the layer laminate film 160, the following layer configurations can be exemplified in order from the outside of the container.
(1) PET thickness 12 μm/inorganic oxide deposition layer/organic coating layer/biaxially stretched polyamide film thickness 15 μm/CPP layer thickness 70 μm
(2) Biaxially stretched polyamide film thickness 15 μm/PET thickness 12 μm/vapor deposition layer of inorganic oxide/organic coating layer/CPP layer thickness 70 μm
(3) PET thickness 12 μm/inorganic oxide deposition layer/organic coating layer/PET thickness 12 μm/CPP layer thickness 70 μm
(4) PET thickness 12 μm/inorganic oxide deposition layer/organic coating layer/PET thickness 12 μm/PET thickness 12 μm/CPP layer thickness 70 μm
(5) PET thickness 12 μm/PET thickness 12 μm/aluminum deposition layer/LLDPE thickness 60 μm

The packaging container 101 of this embodiment has a hook-and-loop fastener portion 180 to enable resealing of the opening OP after opening.
The hook-and-loop fastener portion 180 extends in a direction connecting the top portion 131 and the bottom portion 132 , that is, in a direction crossing the top portion 131 and the bottom portion 132 , and is arranged on the surface of the surface film 121 . Two hook-and-loop fastener portions 180 having the same configuration are located near the side portion 133, and are spaced apart in the left-right direction.

The hook-and-loop fastener part 180 can be composed of a hook-and-loop fastener tape. The hook-and-loop fastener portion 180 can be configured by attaching a hook-and-loop fastener tape to the surface side of the surface film 121 by thermocompression or via an adhesive layer. A hot-melt adhesive or the like can be considered as the adhesive layer. EVA, polyolefins, synthetic rubbers, polyamides, polyesters, polyurethanes, etc. can be considered as main components of hot-melt adhesives.
Unlike conventional hook-and-loop fastener tapes that distinguish between male and female, the hook-and-loop fastener tape that constitutes the hook-and-loop fastener portion 180 has a configuration that enables joining between fastener surfaces (engagement surfaces) of the same configuration. . Therefore, the hook-and-loop fastener portion 180 configured as described above has a configuration in which one hook-and-loop fastener itself, that is, the hook-and-loop fastener portion 180 itself can be folded back and joined. Further, in this embodiment, the hook-and-loop fastener part 180 exemplifies an example in which the entire fastener surface is a hook-and-loop tape having the same configuration. may be configured. It should be noted that the same configuration as used herein does not refer to completely equal shapes and dimensions, but includes partially missing or deformed parts and different dimensions. Here, the range in which even if the dimensions are different can be regarded as having the same configuration, the dimensional difference is within a range of ±10%, and more preferably, the dimensional difference is within a range of ±5%. be. The dimensions here refer to d3, d4, d5, and d6.

(Velcro fastener A)
In this embodiment, three types of hook-and-loop fasteners A, B, and C are exemplified as specific forms of the hook-and-loop fastener portion 180 .
4 is a perspective view of a hook-and-loop fastener portion 180 in the form of hook-and-loop fastener A. FIG.
5 is a plan view of a hook-and-loop fastener portion 180 in the form of hook-and-loop fastener A. FIG.
FIG. 6 is a cross-sectional view of the hook-and-loop fastener portion 180 in the form of the hook-and-loop fastener A cut along the arrow BB in FIG.
FIG. 7 is a cross-sectional view of the hook-and-loop fastener portion 180 in the form of the hook-and-loop fastener A cut along the arrow CC in FIG.
4 and 5, the direction indicated by the arrow MD is called the MD (machine direction) direction, and the direction indicated by the arrow TD is called the TD (transverse direction) direction.
The hook-and-loop fastener portion 180 has a plurality of hook-shaped engaging elements 181 and column-shaped engaging elements 182 arranged on the fastener surface where the two are engaged facing each other.

It is preferable that the main material of the hook-and-loop fastener part 180 is polyethylene. Specifically, it preferably contains 50% by mass or more of polyethylene, more preferably 70% by mass or more, and even more preferably 85% by mass or more.
Polyethylene that can be used for the hook-and-loop fastener portion 180 includes HDPE, MDPE, LDPE, LLDPE, etc., but LLDPE is preferable from the viewpoint of sealability. The material used for the hook-and-loop fastener portion 180 may contain a plurality of polyethylenes, or may partially contain other resins such as polypropylene, from the viewpoint of cuttability, strength, and waist (loop stiffness). Other types of blends can be made from.

The hook-shaped engaging element 181 has a column portion 181a and an engaging projection portion 181b, which are arranged side by side at regular intervals in the MD direction.
The columnar portion 181a is configured in a columnar shape, rising substantially vertically from the fastener surface of the base portion 183. As shown in FIG. In this embodiment, the columnar portion 181a has a rectangular parallelepiped shape longer in the MD direction than in the TD direction.
The engaging protrusion 181b is provided on the top of the column 181a and protrudes in a direction intersecting the rising direction of the column. In this embodiment, the engaging protrusion 181b protrudes in the TD direction, but may also protrude in the MD direction.
Further, the hook-shaped engaging elements 181 are arranged in a large number of rows with the column-shaped engaging elements 182 sandwiched therebetween, and the positions of the hook-shaped engaging elements 181 in the MD direction in each row are intentionally irregular. is shifted. The hook-shaped engaging element 181 can be freely inserted into and removed from the gap between the other hook-shaped engaging elements 181 when the hook-and-loop fastener is joined. Joining is performed.

The columnar engagement elements 182 are columnar and stand up from the fastener surface, and are arranged side by side at regular intervals in the MD direction. The columnar engaging element 182 of this embodiment has a rectangular parallelepiped shape longer in the MD direction than in the TD direction.
In addition, the columnar engaging elements 182 are arranged in multiple rows with the hook-like engaging elements 181 interposed therebetween, and the positions of the columnar engaging elements 182 in each row in the MD direction are intentionally irregular. staggered. The hook-shaped engaging element 181 can be freely inserted into and removed from the gap between the other hook-shaped engaging elements 181 when the hook-and-loop fastener is joined. Joining is performed.

8A and 8B are diagrams for explaining the dimensions of the hook-like engaging element 181 and the column-like engaging element 182 in the form of the hook-and-loop fastener A. FIG. FIG. 8 corresponds to an enlarged cross-section of FIG.
FIG. 9 is a diagram showing dimensions d1 to d11 shown in FIGS. 5 and 8. FIG.
The columns of dimension examples in FIG. 9 show measured values of the hook-and-loop fastener portion 180, and the column of preferred dimension ranges shows a preferable dimension range that can be suitably used in the present invention.

Preferred dimensions of each part in the form of the hook-and-loop fastener A will be collectively described below.
The height d1 of the hook-shaped engaging element 181 is desirably 300 μm or more. Also, the height d1 of the hook-shaped engaging element 181 is desirably 700 μm or less.
The height d1 of the columnar engaging element 182 is desirably 300 μm or more. Also, the height d1 of the columnar engaging element 182 is preferably 700 μm or less.
The MD-direction length d2 of the hook-shaped engaging element 181 is desirably 500 μm or more. Further, the length d2 in the MD direction of the hook-shaped engaging element 181 is desirably 700 μm or less. This is because if the length is shorter than the above range, the fitting strength will be weak, and if it is longer, the fitting strength will be too strong and the risk of the projection falling off will increase.
It is desirable that the length d2 in the MD direction of the columnar engaging element 182 is 100 μm or more. Also, the length d2 in the MD direction of the columnar engaging element 182 is preferably 300 μm or less.

The TD-direction width d3 of the column portion 181a of the hook-shaped engaging element 181 is desirably 100 μm or more. Further, the TD direction width d3 of the column portion 181a of the hook-shaped engaging element 181 is preferably 350 μm or less.
The width d3 in the TD direction of the columnar engagement element 182 is desirably 100 μm or more. Moreover, it is desirable that the width d3 in the TD direction of the columnar engaging element 182 is 350 μm or less.
The total width d4 in the TD direction of the hook-shaped engaging element 181 is desirably 300 μm or more. Moreover, the TD direction width d4 of the hook-shaped engaging element 181 is preferably 950 μm or less.

The TD direction protrusion width d5 of the engaging protrusion 181b is desirably 100 μm or more. Moreover, it is desirable that the protrusion width d5 in the TD direction of the engaging protrusion 181b is 300 μm or less. This is because if the width is narrower than the above range, the fitting strength becomes weak, and if it is too wide, the risk of the projection falling off increases.
The return angle d6 of the engaging protrusion 181b is preferably 45° or more. Moreover, it is desirable that the return angle d6 of the engaging protrusion 181b is 90° or less. This is because if the size is too small, the strength of the fitting is increased and the fitting is likely to come off, and if the size is too large, the fitting cannot be performed. Note that FIG. 8(a) shows the case of d6=90° shown in FIGS. 4 to 7, and FIG. 8(b) shows a modified form in which d6 is less than 90°. .

The total thickness d7 of the hook-and-loop fastener tape used for the hook-and-loop fastener portion 180 is desirably 400 μm or more. Moreover, the total thickness d7 of the hook-and-loop fastener tape is desirably 700 μm or less.
The MD-direction interval d8 of the hook-shaped engaging elements 181 is desirably 100 μm or more. Moreover, it is desirable that the MD direction width interval d8 of the hook-shaped engaging elements 181 is 500 μm or less.
The MD-direction interval d8 of the columnar engaging elements 182 is desirably 100 μm or more. Moreover, it is desirable that the MD-direction width interval d8 of the columnar engaging elements 182 is 500 μm or less.

Both the TD-direction interval d9 between the hook-like engaging elements 181 and the TD-direction interval d9 between the columnar engaging elements 182 are preferably 500 μm or more. Moreover, both the TD-direction interval d9 between the hook-like engaging elements 181 and the TD-direction interval d9 between the columnar engaging elements 182 are preferably 1000 μm or less. If the TD-direction spacing d9 of the hook-like engaging elements 181 and the TD-direction spacing d9 of the column-like engaging elements 182 are smaller than the above range, the elements become dense, and if they are larger than the above ranges, the elements become sparse and fitting becomes difficult. is.

The thickness d10 of the base portion 183 is preferably 50 μm or more, more preferably 100 μm or more. Also, the thickness d10 of the base portion 183 is preferably 500 μm or less, more preferably 400 μm or less, and even more preferably 300 μm or less. This is because if the thickness d10 of the base portion 183 is thin, the amount of resin is too small to achieve close contact (bonding) as a hook-and-loop fastener, and if the thickness d10 is thick, the stiffness (loop stiffness) becomes too strong.
Moreover, it is desirable that the width of the hook-and-loop fastener portion 180 in the TD direction is 5 mm or more. Moreover, it is desirable that the width of the hook-and-loop fastener portion 180 in the TD direction is 20 mm or less. If the width is smaller than the above range, the amount of resin is too small to achieve close contact (bonding) as a hook-and-loop fastener.

A TD-direction interval d11 between the column portion 181a of the hook-shaped engaging element 181 and the column-shaped engaging element 182 is preferably 300 μm or more. Moreover, the TD direction interval d11 between the column portion 181a of the hook-shaped engaging element 181 and the column-shaped engaging element 182 is preferably 500 μm or less. This is because if the TD direction interval d11 between the column portion 181a of the hook-shaped engaging element 181 and the columnar engaging element 182 is smaller than the above range, the elements become dense, and if it is large, the elements become sparse and fitting becomes difficult. .
The hook-and-loop fastener tape having the hook-shaped engaging elements and the column-shaped engaging elements described above is also called a hook-and-loop fastener A.

(Velcro fastener B, C)
The hook-and-loop fastener A described above has hook-shaped engaging elements and column-shaped engaging elements. A hook-and-loop fastener tape having only engaging elements) was prepared. Further, regarding the hook-and-loop fastener tape having only this hook-shaped engaging element, the main material is PE (hereinafter also referred to as hook-and-loop fastener B), and the hook-and-loop fastener tape as the main material is PP (hereinafter also referred to as hook-and-loop fastener C). ) were prepared.
FIG. 10 is a perspective view of a hook-and-loop fastener portion 180 in the form of hook-and-loop fasteners B and C. FIG.
FIG. 11 is a plan view of a hook-and-loop fastener portion 180 in the form of hook-and-loop fasteners B and C. FIG.
FIG. 12 is a cross-sectional view of the hook-and-loop fastener portion 180 in the form of hook-and-loop fasteners B and C cut at the position of arrows GG in FIG.
FIG. 13 is an enlarged cross-sectional view of the hook-and-loop fastener portion 180 in the form of hook-and-loop fasteners B and C, cut along the arrow HH in FIG.
FIG. 14 is a diagram showing dimensions d1 to d10 shown in FIGS. 11 and 13. FIG.
14 shows the measured values of the hook-and-loop fastener tape, and the preferred dimension range column shows a preferable dimension range that can be suitably used in the present invention.

Preferred dimensions of each part in the form of hook-and-loop fasteners B and C will be collectively described below.
The height d1 of the hook-shaped engaging element 181 is desirably 300 μm or more. Also, the height d1 of the hook-shaped engaging element 181 is desirably 700 μm or less.
The MD-direction length d2 of the hook-shaped engaging element 181 is desirably 500 μm or more. Further, the length d2 in the MD direction of the hook-shaped engaging element 181 is desirably 700 μm or less. This is because if the length is shorter than the above range, the fitting strength will be weak, and if it is longer, the fitting strength will be too strong and the risk of the projection falling off will increase.

The TD-direction width d3 of the column portion 181a of the hook-shaped engaging element 181 is desirably 100 μm or more. Further, the TD direction width d3 of the column portion 181a of the hook-shaped engaging element 181 is preferably 350 μm or less.
The total width d4 in the TD direction of the hook-shaped engaging element 181 is desirably 300 μm or more. Moreover, the TD direction width d4 of the hook-shaped engaging element 181 is preferably 950 μm or less.

The TD direction protrusion width d5 of the engaging protrusion 181b is desirably 100 μm or more. Moreover, it is desirable that the protrusion width d5 in the TD direction of the engaging protrusion 181b is 300 μm or less. This is because if the width is narrower than the above range, the fitting strength becomes weak, and if it is too wide, the risk of the projection falling off increases.
The return angle d6 of the engaging protrusion 181b is preferably 45° or more. Moreover, it is desirable that the return angle d6 of the engaging protrusion 181b is 90° or less. This is because if the size is too small, the strength of the fitting is increased and the fitting is likely to come off, and if the size is too large, the fitting cannot be performed. Note that FIG. 13(a) shows the case of d6=90° shown in FIGS. 10 to 12, and FIG. 13(b) shows a modified form in which d6 is less than 90°. .

The total thickness d7 of the hook-and-loop fastener tape is desirably 400 μm or more. Further, the total thickness d7 of the hook-and-loop fastener tape is desirably 1200 μm or less.
The MD-direction interval d8 of the hook-shaped engaging elements 181 is desirably 100 μm or more. Moreover, it is desirable that the MD direction width interval d8 of the hook-shaped engaging elements 181 is 500 μm or less.

A TD-direction interval d9 between the hook-shaped engaging elements 181 is desirably 250 μm or more. Moreover, the TD direction interval d9 between the hook-shaped engaging elements 181 is desirably 500 μm or less. This is because if the TD direction interval d9 of the hook-shaped engaging elements 181 is smaller than the above range, the elements will be dense, and if it is larger, the elements will be sparse and fitting will be difficult.

The thickness d10 of the base portion 183 is preferably 50 μm or more, more preferably 100 μm or more. Also, the thickness d10 of the base portion 183 is preferably 500 μm or less, more preferably 400 μm or less, and even more preferably 300 μm or less. This is because if the thickness d10 of the base portion 183 is thin, the amount of resin is too small to achieve close contact (bonding) as a hook-and-loop fastener, and if the thickness d10 is thick, the stiffness (loop stiffness) becomes too strong.
Moreover, it is desirable that the width of the hook-and-loop fastener portion 180 in the TD direction is 5 mm or more. Moreover, it is desirable that the width of the hook-and-loop fastener portion 180 in the TD direction is 20 mm or less. If the width is smaller than the above range, the amount of resin is too small to achieve close contact (bonding) as a hook-and-loop fastener.

The packaging container 101 configured as described above is shipped with its entire circumference sealed, for example, in a state in which the contents (not shown) are stored in the storage portion 102 .
FIG. 15 is a diagram showing a state in which the packaging container 101 is opened.
A user who has purchased the product can separate the upper seal portion 141 from the container body portion 106 using the notch 107, open the packaging container 101 to form an opening OP, and take out the contents. When the packaging container 101 is opened, the upper part of the storage part 102 is opened.

FIG. 16 is a diagram showing a state in which the packaging container 101 is resealed.
FIG. 17 is a diagram showing a state in which the hook-and-loop fastener portion 180 is joined. FIG. 17 illustrates the case of the surface fastener A, but in the case of the surface fasteners B and C, hook-like engaging elements are arranged instead of the column-like engaging elements.
When the packaging container 101 is opened, a part of the contents is taken out, and the rest is to be stored, the packaging container 101 is folded together with the hook-and-loop fastener part 180, and the packaging container 101 is resealed using the hook-and-loop fastener part 180. is possible. At this time, the hook-shaped engaging element 181 on one side is inserted into the gap between the hook-shaped engaging element 181 on the other side or the column-shaped engaging element 182, and the engaging elements are brought into contact with each other for fitting. The fastener surfaces of the hook-and-loop fastener portion 180 are joined with appropriate strength by matching and detachably engaging. Moreover, by peeling off the joined hook-and-loop fastener portion 180, the joining between the two can be easily released, and the package can be opened again.
In a resealable packaging container using a conventional zipper tape, it is necessary to fit the male and female engaging portions, so it is used by extending in the vertical direction like the hook-and-loop fastener portion 180 of this embodiment. It was impossible to join However, in the packaging container 101 of the present embodiment, since the hook-and-loop fastener portion 180 having the same shape of fastener surface is used without distinction between male and female, the resealing operation can be performed easily and reliably.

(Regarding the loop stiffness of the hook-and-loop fastener part 180)
In the configuration of the above embodiment, the packaging container 101 is resealable by providing the hook-and-loop fastener portion 180 . When resealing, the hook-and-loop fastener portion 180 is folded back. Since the hook-and-loop fastener tape used for the hook-and-loop fastener portion 180 in the above embodiment is a resin-molded product, it is difficult to reseal the hook-and-loop fastener portion 180 itself if it is not properly configured. There is a risk that the joining of the hook-and-loop fastener portion 180 may be released due to the force that tries to restore the original shape.
Therefore, the hook-and-loop fastener tape used for the hook-and-loop fastener portion 180 of the packaging container 101 of the present invention is configured to have a moderately low flexural rigidity (waist) by setting the loop stiffness to an appropriate value.

Loop stiffness is a parameter representing the stiffness of a film such as a stretched plastic film. A method of measuring loop stiffness will be described below with reference to FIGS. 18 to 23. FIG. In addition, the measurement method described below describes the measurement of the surface fastener tape used for the surface fastener portion 180 of the present invention.

18 is a plan view showing the test piece 80 and the loop stiffness measuring device 85, and FIG. 19 is a cross-sectional view of the test piece 80 and the loop stiffness measuring device 85 of FIG. 18 along line GG. The test piece 80 is a rectangular surface fastener tape having long sides and short sides. In the present application, the length L1 of the long side of the test piece 80 was set to 150 mm, and the length L2 of the short side was set to the width of the hook-and-loop fastener tape (eg, 9.5 mm). As the loop stiffness measuring device 85, for example, No. 1 manufactured by Toyo Seiki Co., Ltd. A 581 Loop Stiffness Tester® LOOP STIFFNESS TESTER Model DA can be used. The length L1 of the long side of the test piece 80 can be adjusted as long as the test piece 80 can be gripped by a pair of chuck portions 86, which will be described later.

The loop stiffness measuring instrument 85 has a pair of chuck portions 86 for gripping a pair of longitudinal ends of the test piece 80 and a support member 87 supporting the chuck portions 86 . The chuck part 86 includes a first chuck 861 and a second chuck 862 . In the state shown in FIGS. 18 and 19, the test piece 80 is placed on the pair of first chucks 861, and the second chuck 862 still grips the test piece 80 between itself and the first chucks 861. not As will be described later, the test piece 80 is gripped between a first chuck 861 and a second chuck 862 of the chuck portion 86 during measurement. The second chuck 862 may be connected to the first chuck 861 via a hinge mechanism.

A method of measuring the loop stiffness of the test piece 80 using the loop stiffness measuring device 85 will be described. First, as shown in FIGS. 18 and 19, the test piece 80 is placed on the first chuck 861 of the pair of chuck portions 86 which are arranged with an interval L3 therebetween. In the present application, the interval L3 is set so that the length of the loop portion 81 (hereinafter also referred to as loop length) is 60 mm. The test piece 80 includes an inner surface 80x positioned on the side of the first chuck 861 and an outer surface 80y positioned on the opposite side of the inner surface 80x. The inner surface 80x and the outer surface 80y of the test piece 80 match the inner surface side (the side on which the engaging elements are provided) and the outer surface side of the hook-and-loop fastener tape. When the loop portion 81 to be described later is formed in the test piece 80 , the inner surface 80 x is positioned inside the loop portion 81 and the outer surface 80 y is positioned outside the loop portion 81 . Subsequently, as shown in FIG. 20 , the second chuck 862 is placed on the test piece 80 so as to grip the ends of the test piece 80 in the longitudinal direction between the first chuck 861 and the first chuck 861 .

Subsequently, as shown in FIG. 21, at least one of the pair of chuck portions 86 is slid on the support member 87 in the direction in which the distance between the pair of chuck portions 86 is reduced. Thereby, the loop portion 81 can be formed in the test piece 80 . A test piece 80 shown in FIG. 21 has a loop portion 81 , a pair of intermediate portions 82 and a pair of fixing portions 83 . The pair of fixed portions 83 are portions of the test piece 80 that are held by the pair of chuck portions 86 . The pair of intermediate portions 82 are portions of the test piece 80 located between the loop portion 81 and the pair of intermediate portions 82 . As shown in FIG. 21, the chuck portion 86 is slid on the support member 87 until the inner surfaces 80x of the pair of intermediate portions 82 come into contact with each other. Thereby, the loop portion 81 having a loop length of 60 mm can be formed. The loop length of the loop portion 81 is defined by the position P1 where the surface of the second chuck 862 on the loop portion 81 side and the test piece 80 intersect, and the surface of the other second chuck 862 on the loop portion 81 side and the test piece 80 . is the length of the test piece 80 between the crossing position P2. When ignoring the thickness of the test piece 80, the above-mentioned interval L3 has a value obtained by adding 2×t to the length of the loop portion 81. As shown in FIG. t is the thickness of the second chuck 862 of the chuck portion 86 .

After that, as shown in FIG. 22, the posture of the chuck portion 86 is adjusted so that the projecting direction Y of the loop portion 81 with respect to the chuck portion 86 is vertical. For example, the posture of the chuck portion 86 supported by the support member 87 is adjusted by moving the support member 87 so that the normal direction of the support member 87 faces the horizontal direction. In the example shown in FIG. 22, the projecting direction Y of the loop portion 81 coincides with the thickness direction of the chuck portion. Also, the load cell 88 is prepared at a position separated from the second chuck 862 by a distance Z1 in the projecting direction Y of the loop portion 81 . In this application, the distance Z1 is set to 50 mm. Subsequently, the load cell 88 is moved at a speed V toward the loop portion 81 of the test piece 80 by a distance Z2 shown in FIG. The distance Z2 is set so that the load cell 88 contacts the loop portion 81 and then the load cell 88 pushes the loop portion 81 toward the chuck portion 86 side, as shown in FIGS. In this application, the distance Z2 is set to 40 mm. In this case, the distance Z3 between the load cell 88 and the second chuck 862 of the chuck portion 86 when the load cell 88 pushes the loop portion 81 toward the chuck portion 86 is 10 mm. The speed V for moving the load cell 88 was 3.3 mm/s, and the pressing holding time was 3 s.

Subsequently, as shown in FIG. 23, the load cell 88 is moved toward the chuck portion 86 by a distance Z2, and in a state in which the load cell 88 pushes the loop portion 81 of the test piece 80, the load is applied from the loop portion 81 to the load cell 88. After the load value stabilizes, record the load value. The value of the load obtained in this way is adopted as the loop stiffness of the film forming the test piece 80 . In the present application, unless otherwise specified, the environment during the loop stiffness measurement is 23° C. temperature and 50% relative humidity.

(Example and Comparative Example)
A plurality of types of the packaging container 101 described in the above embodiment were produced as examples, and comparative examples were also produced, and resealing operations were evaluated.
FIG. 24 is a diagram summarizing the results of evaluation of the easiness of joining at the time of resealing by preparing samples of a plurality of types of packaging containers.
The evaluation shown in FIG. 24 was performed for three examples and one comparative example by combining three types of hook-and-loop fastener tapes and zipper members (zipper tapes) with the packaging container 101 of the above embodiment. Incidentally, the chuck member has a conventional form in which a convex engaging portion and a concave engaging portion extending in the same cross-sectional shape in one direction are fitted.

<Example 1>
A laminate obtained by dry-laminating a PET thickness of 12 μm, an aluminum-deposited PET thickness of 12 μm, and an LLDPE thickness of 60 μm was laminated using a hook-and-loop fastener B having a width of 13 mm in the lateral direction as the hook-and-loop fastener portion 180 , and the packaging container 101 of the embodiment. Example 1 was produced by making a four-sided bag in the form of

<Example 2>
A laminate obtained by dry-laminating a PET thickness of 12 μm, an aluminum-deposited PET thickness of 12 μm, and an LLDPE thickness of 60 μm was laminated with a hook-and-loop fastener C having a width of 13 mm in the lateral direction as the hook-and-loop fastener portion 180, and the packaging container 101 of the embodiment Example 2 was produced by making a four-sided bag in the form of

<Example 3>
A laminate obtained by dry-laminating PET with a thickness of 12 μm, aluminum deposition thickness of PET with a thickness of 12 μm, and LLDPE with a thickness of 60 μm is used as the surface fastener part 180 with a surface fastener A having a width of 9.5 mm in the lateral direction. Example 2 was produced by making a four-sided bag in the form of No. 101.

<Comparative Example 1>
A four-sided bag in the form of the packaging container 101 of the embodiment is formed by using a chuck member at a position corresponding to the hook-and-loop fastener part 180 on a laminate obtained by dry-laminating a PET thickness of 12 μm, an aluminum deposition PET thickness of 12 μm, and an LLDPE thickness of 60 μm. , and Comparative Example 1 was produced.

In Comparative Example 1 using a chuck member, since it is a form that can be joined by fitting the convex engaging portion and the concave engaging portion, it was not possible to join even if it was folded back, so it was possible to determine whether joining was possible. was evaluated as x.
On the other hand, in Examples 1 to 3, in which the hook-and-loop fastener provided with the hook-shaped engaging element 181 without distinction between males and females was used, it was possible to fold back and join and reseal. The evaluation of propriety was 0.
More specifically, in Example 1, since the joining work could be performed normally, the ease of joining was evaluated as ◯.
In Example 2, the loop stiffness is a high value of 6054 mN under the conditions of a loop length of 60 mm, a pressing speed of 3.3 mm/s, and a pressing holding time of 3 s. Since bonding was possible, the ease of bonding was evaluated as ◯.
In Example 3, the loop stiffness of the hook-and-loop fastener alone was a very low value of 87 mN under the conditions of a loop length of 60 mm, a pressing speed of 3.3 mm/s, and a pressing holding time of 3 s, and it could be easily folded. For this reason, it was possible to perform joining very easily, so the ease of joining was evaluated as ⊚.

From the above results, the loop stiffness of the single hook-and-loop fastener used in the hook-and-loop fastener 180 can be resealed if it is 7000 mN or less under the conditions of loop length 60 mm, pushing speed 3.3 mm / s, pushing holding time 3 s. It can be said that it can be used for various packaging containers. In addition, the loop stiffness of the hook-and-loop fastener unit used in the hook-and-loop fastener portion 180 is preferably 5000 mN or less, more preferably 1500 mN or less, under the conditions of a loop length of 60 mm, a pressing speed of 3.3 mm/s, and a pressing holding time of 3 s. It is even more desirable to have

(deformed form)
Various modifications and changes are possible without being limited to the embodiments described above, and they are also within the scope of the present invention.

(1) In the embodiments, the specific shape and material of the hook-and-loop fastener can be changed as appropriate. For example, the hook-shaped engaging elements may have a plurality of shapes, and the arrangement and arrangement ratio of the hook-shaped engaging elements and the columnar engaging elements may be changed as appropriate.

(2) In the embodiments, specific packaging container shapes have been exemplified, but other known packaging containers may be provided with the hook-and-loop fastener tape of the present invention.

In addition, although each embodiment and modification can also be combined and used suitably, detailed description is abbreviate|omitted. Moreover, the present invention is not limited to each embodiment described above.

101 Packaging container 102 Storage part 106 Container main body part 107 Notch 121 Surface film 122 Back film 131 Top part 132 Bottom part 133 Side part 141 Top sealing part 142 Bottom sealing part 143 Side sealing part 160 Laminated film 161 Base layer 162 Pattern layer 163 Intermediate Layer 164 Sealant layer 165 Bonding layer 180 Hook-and-loop fastener portion 181 Hook-like engaging element 181a Column portion 181b Engaging projection portion 182 Column-like engaging element 183 Base

Claims (5)

A packaging container having at least a first edge and a second edge facing the first edge,
A hook-and-loop fastener portion arranged to extend in a direction connecting the first edge and the second edge,
The packaging container, wherein the hook-and-loop fastener portion includes a hook-shaped engaging element. In the packaging container according to claim 1,
a plurality of the hook-and-loop fastener portions are arranged side by side in a direction intersecting the direction in which the hook-and-loop fastener portion extends;
A packaging container characterized by In the packaging container according to claim 1 or claim 2,
The loop stiffness of the hook-and-loop fastener alone is 7000 mN or less under the conditions of a loop length of 60 mm, a pressing speed of 3.3 mm/s, and a pressing holding time of 3 s.
A packaging container characterized by In the packaging container according to any one of claims 1 to 3,
The hook-and-loop fastener portion further includes a plurality of columnar engaging elements rising from the surface of the fastener,
A packaging container characterized by In the packaging container according to any one of claims 1 to 4,
Having a first packaging material part and a second packaging material part composed of a laminated film including at least a base material layer and a sealant layer,
a storage unit capable of storing contents;
a sealing portion formed around the accommodating portion;
and a seal-to-be-sealed portion to be sealed after containing the contents;
A packaging container characterized by

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