JP2018008705A - Package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a package which can be smoothly opened and can reduce occurrence of a pinhole.SOLUTION: In a package 10 storing a content and having an end edge seal part 14 where a rear seal part 15 being butt-seamed with the end edges of facing laminate films having at least an outer layer and an inner layer formed of a thermo-bonding resin and extending in a vertical direction, a rear surface part 10a disposed with the rear seal part 15 and a front surface part 10b facing the rear surface part 10a are heat-bonded at vertical ends, the laminate films have a first intermediate layer formed of polyethylene terephthalate laminated so as to adjacent to the inner layer between the outer layer and the inner layer and have easily tearable property in a direction (X direction) perpendicular to an extension direction (Y direction) of the rear seal part 15.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pillow-type package having a back seal portion.

  A conventional package having a back seal portion is disclosed in Patent Document 1. This package is formed of a laminated film having an outer layer, an intermediate layer, and an inner layer. The inner layer is made of a heat-adhesive resin, and the intermediate layer is disposed between the outer layer and the inner layer.

  The package is formed with a back seal portion extending in the up-down direction by laminating opposite edges of the laminated film. In addition, the edge seal portion is formed by thermally bonding the back surface portion provided with the back seal portion and the front surface portion facing the back surface portion at the upper and lower ends.

  The back seal portion is provided with an opening start portion such as a notch and a tear guide line that extends from the back surface portion to the front surface portion continuously from the opening start portion. The tear induction line is formed by a cut formed by cutting the intermediate layer at a predetermined depth in the thickness direction by irradiation with a carbon dioxide laser.

  By tearing the back surface portion and the front surface portion in the circumferential direction along the tear guide line from the opening start means, the package can be opened. Thereby, a wide opening part can be formed and the contents can be taken out easily.

Japanese Patent Laying-Open No. 2015-93692 (pages 2 to 3, FIGS. 1 and 15)

  However, according to the conventional packaging body, the user often opens the packaging bag by holding the back seal portion with both hands and pulling it in the opposite direction from the opening start portion. At this time, if the back surface portion is pulled in the vertical direction, the inner layer extends in the vertical direction, and the back surface portion cannot be easily torn. Thereby, there was a problem that the convenience of the packaging bag was low.

  An object of this invention is to provide the package which can improve the convenience at the time of opening in view of the said problem.

In order to achieve the above object, the present invention provides a back seal portion that extends in the up-down direction by laminating opposite edges of a laminated film having at least an outer layer and an inner layer made of a heat-adhesive resin, and the back seal. In a packaging body that contains contents by having an edge seal part that is thermally bonded at the upper and lower ends with a back surface part in which a part is arranged and a front surface part that faces the back surface part,
The laminated film has a first intermediate layer made of polyethylene terephthalate laminated adjacent to the inner layer between the outer layer and the inner layer, and is easily tearable in a direction perpendicular to the extending direction of the back seal portion. It is characterized by having.

  According to this configuration, the inner layer is torn together following the breakage of the polyethylene terephthalate when the back portion is pulled in the opposite direction in the vertical direction, and the back portion is smoothly torn.

  Further, the present invention is characterized in that, in the package having the above-described configuration, the first intermediate layer has easy tearability in a direction perpendicular to the extending direction of the back seal portion.

  Moreover, this invention is a package body of the said structure WHEREIN: The said laminated | multilayer film is the 2nd intermediate | middle layer which has easy tearability in the direction orthogonal to the extending direction of the said back seal part between the said outer layer and the said 1st intermediate | middle layer. It is characterized by having.

  Moreover, the present invention is characterized in that, in the package having the above-described configuration, an opening start portion is provided in the back seal portion.

  Moreover, this invention is characterized by the melting | fusing point of each layer which comprises the said laminated | multilayer film being 100 degreeC or more in the package of the said structure.

  According to the present invention, the laminated film has the first intermediate layer made of polyethylene terephthalate adjacent to the inner layer, and has easy tearability in the direction perpendicular to the extending direction of the back seal portion. For this reason, when the back seal portion is pulled in the opposite direction, the inner layer breaks following the break of the first intermediate layer, and the package is torn in the direction orthogonal to the extending direction of the back seal portion. Therefore, the package can be opened easily, and the convenience at the time of opening the package can be improved.

The perspective view of the package which concerns on 1st Embodiment of this invention. The top view which shows the back part side of the package which concerns on 1st Embodiment of this invention. Sectional drawing which shows the layer structure of the laminated | multilayer film which comprises the package which concerns on 1st Embodiment of this invention. Sectional drawing which shows the layer structure of the laminated | multilayer film which comprises the package which concerns on 2nd Embodiment of this invention. Sectional drawing which shows the layer structure of the laminated | multilayer film which comprises the package which concerns on 3rd Embodiment of this invention.

<First Embodiment>
A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a perspective view of the package 10, and FIG. 2 shows a rear view of the package 10.

  The package 10 is prepared by laminating one laminated film 60 (see FIG. 3) cut in advance in a quadrangular shape, and stacking the inner layers 63 (see FIG. 3) at the opposite edges to each other. Thereby, the back seal part 15 extended in the up-down direction (Y direction) is formed in the back surface part 10a of the package 10. FIG. Further, the back seal portion 15 is provided with an opening start portion 15a for starting the opening of the package 10.

  The opening start portion 15a is formed by a V-notch. The end surface of the back seal part 15 may be formed in a sawtooth shape, and a plurality of opening start parts 15a may be provided side by side. Moreover, the opening start part 15a may be formed by I notch or U notch, and may be formed by the scar group which consists of a some fine piercing hole.

  Next, the lower end of the back surface portion 10a where the back seal portion 15 of the laminated film 60 formed in a cylindrical shape is disposed and the lower end of the front surface portion 10b facing the back surface portion 10a are thermally bonded. Thereby, the edge seal part 14a extended in the left-right direction (X direction) is formed. After the contents are stored, the upper end of the back surface portion 10a and the upper end of the front surface portion 10b are thermally bonded to form an edge seal portion 14b extending in the left-right direction (X direction).

  Thereby, the accommodating part 16 which accommodates the content 20 in the package 10 is sealed and formed. The package 10 is a gusset pillow type, and side portions 10c are provided at both end portions of the back portion 10a and the front portion 10b.

  FIG. 3 is a cross-sectional view showing the layer structure of the laminated film 60 constituting the package 10. The laminated film 60 constituting the package 10 is a laminated body in which an outer layer 61, a first intermediate layer 62, and an inner layer 63 made of a heat-adhesive (thermoplastic) resin are laminated.

  Since the outer layer 61 is a basic material constituting the package 10, a synthetic resin film having excellent properties in mechanical, physical, chemical and the like can be used. For example, polyester, polyamide, A polypropylene resin or the like can be used. The thickness of the film constituting the outer layer 61 may be determined in consideration of cost and the like, but about 12 to 25 μm is appropriate.

  As a specific example of the outer layer 61, a single body such as a uniaxially stretched nylon film, a biaxially stretched nylon film, a polypropylene film (OPP), a polyester resin film, or a laminate thereof is used.

  Specific examples of the polyester resin film include various polyesters such as polyethylene terephthalate (PET), polybutylene terephthalate, polyethylene-2, 6-naphthalate, polybutylene-2, 6-naphthalate, and polycyclohexanedimethylene terephthalate. Resin can be used.

  Also, a biaxially stretched nylon film used as the outer layer 61, a vapor-deposited layer of silica, alumina, aluminum, etc., a metal foil (aluminum, etc.) or polyvinylidene chloride, an ethylene / vinyl alcohol copolymer (EVOH) on the back surface of the polyester resin film ) Etc. may be provided.

  Further, as the outer layer 61, a laminated film of nylon / EVOH / nylon, a laminated film of nylon / metaxylylenediamine / adipic acid copolymer (MXD) / nylon, etc. may be used to form a barrier property with a multilayer structure. .

  The inner layer 63 is a layer made of a heat-adhesive (thermoplastic) resin and melts by heat to fuse the laminated film 60.

  Examples of the heat-adhesive resin used for the inner layer 63 include low density polyethylene (LDPE), medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene (LLDPE), polypropylene (CPP), and vapor deposition layer. (Silica, alumina, aluminum, etc.) provided polypropylene (VMPP), ethylene-α olefin copolymer, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid copolymer, Ester copolymers of ethylene and acrylic acid esters, ethylene-methacrylic acid copolymers, ethylene-propylene copolymers, methylpentene polymers, polyolefin resins (polyethylene, polypropylene, etc.) with unsaturated carboxylic acids (acrylic acid, methacrylic acid, Anhydrous male It can be to one not selected from modified acid-modified polyolefin resins in fumaric acid, etc.) using two or more kinds.

  The thickness of the inner layer 63 may be appropriately determined in consideration of required physical properties (heat sealability), cost, and the like, and is preferably about 10 μm to 100 μm, and particularly preferably about 15 μm to 50 μm. As a method for forming the inner layer 63, a method of laminating a single layer or a multilayer film of the above-mentioned thermoadhesive resin or a method of laminating the thermoadhesive resin by a melt extrusion method is used.

  The first intermediate layer 62 is made of polyethylene terephthalate. Polyethylene terephthalate is excellent in vapor barrier properties and gas barrier properties, and can prevent the contents enclosed in the package 10 from being deteriorated by moisture or oxygen.

  The outer layer 61 and the inner layer 63 are formed of an unstretched film having no easy tearability, and the first intermediate layer 62 is formed of a stretched film having easy tearability in the stretched direction. This easy tear direction coincides with the TD direction (transverse direction = transverse direction = film width direction) of the laminated film 60 when the packaging bag 10 is formed, and the tear propagation resistance value in the TD direction is the MD direction (vertical direction: Machine). Smaller than (Direction = film flow direction). Thereby, the laminated film 60 has linear easy tearability (linear tearability) in the left-right direction (X direction) orthogonal to the extending direction of the back seal portion 15 (see FIG. 2).

  Each layer constituting the laminated film 60 is a film having a melting point of 100 ° C. or higher. Thereby, the heat resistance as the laminated | multilayer film 60 increases, and it also becomes possible to heat-cook the contents in the state with which the package 10 was filled. For example, the contents can be boiled by putting the unopened package 10 in hot water.

  As a production method of the laminated film 2, a lamination method used when producing a normal packaging material, for example, a dry lamination method, a wet lamination method, a solventless lamination method, a coextrusion lamination method, an inflation method, a thermal lamination method, etc. Can be used.

  Further, when the above layers are laminated, if necessary, pretreatment such as corona discharge treatment, ozone treatment, flame treatment, blast treatment, etc. can be optionally applied to the surface of the substrate to be laminated.

  A barrier layer having a gas barrier property formed of a metal foil, a metal film, or an inorganic oxide film may be provided on the inner surface of the outer layer 61 or the outer surface of the first intermediate layer 62.

  Next, the procedure for opening the package 10 will be described. The user grips the back seal portions 15 on both sides of the opening start portion 15a with the thumbs and index fingers of both hands and pulls them toward the edge seal portions 14a and 14b. Thereby, the back surface part 10a is torn along the easy tearing direction of the laminated film 60 starting from the opening start part 15a, and the package 10 opens in the left-right direction (X direction).

  At this time, since the first intermediate layer 62 is made of polyethylene terephthalate, it is pulled in the vertical direction (Y direction) and torn. Since the inner layer 63 made of the heat-adhesive resin is adjacent to the first intermediate layer 62, the inner layer 63 breaks together following the breakage of the first intermediate layer 62. For this reason, the inner layer 63 is prevented from extending in the vertical direction (Y direction), and the back surface portion 10a can be smoothly torn along the easy tear direction.

  According to this embodiment, the laminated film 60 has the first intermediate layer 62 made of polyethylene terephthalate adjacent to the inner layer 63. Moreover, the laminated film 60 has easy tearability in a direction (X direction) orthogonal to the extending direction (Y direction) of the back seal portion 15. For this reason, when the back seal portion 15 is pulled in the opposite direction, the inner layer 63 breaks following the break of the first intermediate layer 62, and the packaging body 10 extends in a direction perpendicular to the extending direction of the back seal portion 15. Is torn. Therefore, the package 10 can be opened easily, and the convenience at the time of opening the package 10 can be improved.

  In addition, the first intermediate layer 62 has easy tearability in a direction (X direction) orthogonal to the extending direction (Y direction) of the back seal portion 15, so that the first intermediate layer 62 has easy tearability in the left-right direction (X direction). The film 60 can be easily realized.

  Moreover, by providing the opening start part 15a in the back seal part 15, the packaging body 10 can be opened easily and the convenience can be further improved.

  Moreover, when the melting point of each layer constituting the laminated film 60 is 100 ° C. or more, the heat resistance of the laminated film 60 is increased, and the contents can be cooked while being packed in the package 10. . For example, the contents can be boiled by putting the unopened package 10 in hot water.

  In the present embodiment, the first intermediate layer 62 may be replaced by a stretched film having easy tearability in the direction in which the outer layer 61 or the inner layer 63 is stretched. Thereby, the laminated | multilayer film 60 which has easy tearability in the left-right direction (X direction) is easily realizable.

Second Embodiment
Next, a second embodiment of the present invention will be described. FIG. 4 is a cross-sectional view showing the layer configuration of the laminated film 60 constituting the package 10 of the second embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. In the present embodiment, a second intermediate layer 64 is provided between the outer layer 61 and the first intermediate layer 62. Other parts are the same as those in the first embodiment.

  The second intermediate layer 64 has physical properties required for the package 10 (for example, mechanical toughness, bending resistance, puncture resistance (pinhole resistance), impact resistance, cold resistance, heat resistance, and chemical resistance. Etc.) can be used to further improve these physical properties.

  Specifically, as the second intermediate layer 64, a stretched film made of polyolefin such as polyester, polyamide, polyethylene, polypropylene, or ethylene-propylene copolymer can be used.

  In the laminated film 60 of the present embodiment, the outer layer 61, the first intermediate layer 62, and the inner layer 63 are formed of an unstretched film that does not easily tear. At this time, by using a stretched film having easy tearability for the second intermediate layer 64, easy tearability can be imparted to the laminated film 60 in the same direction as the second intermediate layer 64.

  According to the present embodiment, similarly to the first embodiment, when the back seal portion 15 is pulled in the opposite direction, the package body is formed in the direction perpendicular to the extending direction of the back seal portion 15 by the second intermediate layer 64. 10 is torn. At this time, the inner layer 63 breaks following the breakage of the first intermediate layer 62. Therefore, the package 10 can be opened easily, and the convenience at the time of opening the package 10 can be improved.

  In addition, the second intermediate layer 64 is easily tearable in the direction (X direction) orthogonal to the extending direction (Y direction) of the back seal portion 15, and thus has a tearable property in the left-right direction (X direction). The film 60 can be easily realized.

  In this embodiment, a stretched film having easy tearability may be used for any one of the outer layer 61, the first intermediate layer 62, and the inner layer 63. At this time, the easy tearability of the laminated film 60 can be further improved by the second intermediate layer 64.

  Further, a barrier layer may be provided on the inner surface of the outer layer 61, the outer surface of the second intermediate layer 64, the inner surface of the second intermediate layer 64, or the outer surface of the first intermediate layer 62.

<Third Embodiment>
Next, a third embodiment of the present invention will be described. FIG. 5 is a cross-sectional view showing the layer structure of the laminated film 60 constituting the package 10 of the third embodiment. For convenience of explanation, the same parts as those in the second embodiment shown in FIG. In the present embodiment, a cut 61 a is provided on the outer surface of the laminated film 60. Other parts are the same as those of the second embodiment.

  The cut 61a is provided outside the inner surface of the outer layer 61 from the outer surface of the laminated film 60 by a cutting blade or a laser. The cut 61a may be formed at a depth reaching the second intermediate layer 64 or the first intermediate layer 62. However, when the laminated film 60 has a barrier layer, the cut 61a is formed outside the barrier layer.

  Further, the notch 61a extends from the opening start portion 15a to the back surface portion 10a in a perforated manner in the left-right direction (X direction) of the back surface portion 10a at a predetermined interval. Thereby, the incision 61a is provided in the same position of both surfaces of the back seal part 15 affixed to the palm. The notches 61a may be formed in a single line of perforations, or may be formed in a plurality of lines of perforations.

  By providing the perforated cut 61a extending in the left-right direction (X direction), the user can open the package 10 along the cut 61a. Thereby, it can prevent that an opening direction deviates from a X direction, and can open the package 10 more smoothly. A similar cut 61a may be provided in the first embodiment.

  In the first to third embodiments, the package 10 may be made by thermal bonding so that the back seal portion 15 extends along the TD direction of the laminated film 60. In this case, easy tearability can be formed in the direction (X direction) orthogonal to the extending direction of the back seal part 15 by using the laminated film 60 having easy tearability in the MD direction.

  Moreover, the opening start part 15a may be omitted, and a print mark for guiding the opening to be started from a predetermined position on the back seal part 15 may be provided. The user can open the package 10 by using the scissors or the like as a mark on the back seal portion 15 to form a starting point for opening by using the printed mark as a mark.

  Hereinafter, the effects of the present invention will be described in more detail using examples.

  Example 1 is constituted by the packaging body 10 of the first embodiment, and is formed as shown in FIG. The thermal bonding width of the back seal portion 15 of the package 10 was 10 mm, and the thermal bonding width of the edge seal portions 14a and 14b was 10 mm.

  As the outer layer 61 of the laminated film 60, a silica-deposited polyethylene terephthalate film (Dai Nippon Printing Co., Ltd., IBPET-RB) having a silica-deposited barrier layer on its inner surface was used. As the first intermediate layer 62, a biaxially stretched polyethylene terephthalate film (Toyobo Co., Ltd., ET510) was used. As the inner layer 63, an unstretched polyethylene film (manufactured by Okamoto Co., Ltd., LR124) was used. The thickness of the outer layer 61 is 12 μm, the thickness of the first intermediate layer 62 is 12 μm, and the thickness of the inner layer 63 is 30 μm.

  The laminated film 60 was formed by laminating a first intermediate layer 62 on an outer layer 61 via a dry laminate layer, and laminating an inner layer 63 on the surface of the first intermediate layer 62 via a dry laminate layer. The laminated film 60 has an easy tear property in the X direction due to the easy tear property of the first intermediate layer 62.

  Example 2 is constituted by the packaging body 10 of the first embodiment, and is formed in the same shape as Example 1. The outer layer 61, the first intermediate layer 62, and the inner layer 63 of the laminated film 60 were laminated by the thermal lamination method using the same film as in Example 1.

  Example 3 is constituted by the packaging body 10 of the first embodiment, and is formed in the same shape as Example 1. A polyethylene terephthalate film provided with an aluminum foil barrier layer was used as the outer layer 61 of the laminated film 60. For the first intermediate layer 62 and the inner layer 63, the same film as in Example 1 was used. Further, the outer layer 61 is provided with a notch 61a extending in a direction (X direction) orthogonal to the extending direction of the back seal portion 15.

  Example 4 is constituted by the packaging body 10 of the second embodiment, and is formed in the same shape as Example 1. The same film as that of Example 1 was used for the outer layer 61 and the inner layer 63 of the laminated film 60. As the first intermediate layer 62, an unstretched polyethylene terephthalate film having no easy tearability was used. As the second intermediate layer 64, an easily tearable polyethylene film (Denka Co., Ltd., Karariyan (registered trademark) YA2) was used. The thickness of the first intermediate layer 62 is 12 μm, and the thickness of the second intermediate layer 64 is 18 μm.

  In the laminated film 60, the second intermediate layer 64 was laminated on the outer layer 61 via the dry laminate layer, and the first intermediate layer 62 was laminated on the second intermediate layer 64 via the dry laminate layer.

  Example 5 is constituted by the packaging body 10 of the second embodiment, and is formed in the same shape as Example 1. The outer layer 61, the second intermediate layer 64, and the first intermediate layer 62 of the laminated film 60 were laminated by the thermal lamination method using the same film as in Example 2. The inner layer 63 was laminated on the first intermediate layer 62 by melt extrusion of polypropylene resin.

  Example 6 is constituted by the packaging body 10 of the second embodiment, and is formed in the same shape as Example 1. The same laminated film 60 as in Example 5 was used as the laminated film 60. In addition, the opening start portion 15 a is formed by a scar group region composed of a plurality of fine piercing holes, and is provided in a strip shape in the extending direction of the back seal portion 15.

[Comparative Example 1]
Comparative Example 1 was formed in the same shape as Example 1, and a polyethylene film was provided in place of the first intermediate layer 62 of the first embodiment. A polyethylene terephthalate film was used as the outer layer 61 of the laminated film 60, and an aluminum foil barrier layer was provided on the inner surface. Instead of the first intermediate layer 62, a polyethylene film (YA2) having easy tearability in the X direction was used. As the inner layer 63, the same unstretched polyethylene film (LR124) as in Example 1 was used. Each layer of the laminated film 60 is laminated by a thermal lamination method.

[Comparative Example 2]
Comparative Example 2 is formed in the same shape as Example 1, and a polyethylene film and an aluminum foil are provided in place of the first intermediate layer 62 of the first embodiment. A polyethylene terephthalate film was used as the outer layer 61 of the laminated film 60. Instead of the first intermediate layer 62, a polyethylene film (YA2) having easy tearability in the X direction was used, and an aluminum foil barrier layer was provided on the inner surface. As the inner layer 63, the same unstretched polyethylene film (LR124) as in Example 1 was used. Each layer of the laminated film 60 is laminated by a thermal lamination method.

[Comparative Example 3]
Comparative Example 3 is formed in the same shape as Example 1, and the first intermediate layer 62 of the first embodiment is omitted. As the outer layer 61 of the laminated film 60, K-coated cellophane coated with polyvinylidene chloride was used. As the inner layer 63, a uniaxially stretched polypropylene film (YT22, manufactured by Toray Industries, Inc.) having a thickness of 25 μm and having easy tearability in the X direction was used. Each layer of the laminated film 60 is laminated by a thermal lamination method.

[Comparative Example 4]
The comparative example 4 is formed in the same shape as the example 1, and the first intermediate layer 62 of the first embodiment is omitted. As the outer layer 61 of the laminated film 60, K-coated cellophane coated with polyvinylidene chloride was used, and an aluminum foil barrier layer was provided on the inner surface. As the inner layer 63, a low-density polyethylene film having a thickness of 50 μm was used. Each layer of the laminated film 60 is laminated by a thermal lamination method.

[Comparative Example 5]
Comparative Example 5 is formed in the same shape as Example 1, and a nylon film is provided instead of the first intermediate layer 62 of the first embodiment. As the outer layer 61 of the laminated film 60, a polyethylene terephthalate film (VM-PET, manufactured by Toray Industries, Inc.) provided with a barrier layer of an aluminum vapor deposition film was used. Instead of the first intermediate layer 62, a stretched nylon film having easy tearability in the X direction was used. As the inner layer 63, an unstretched propylene film having a thickness of 50 μm was used. Each layer of the laminated film 60 is laminated by a thermal lamination method.

  Table 1 shows the results of testing for tearability at the time of opening the package 10 of Examples 1 to 6 and Comparative Examples 1 to 5.

  In the tearability test, the back seal portion 15 was pulled in the opposite direction in the vertical direction (Y direction), and the back surface portion 10a was torn. Evaluation was performed by touching the back surface 10a and visually checking the opened portion. “◎” in Table 1 indicates a case where the back surface portion 10a is broken almost straight in the left-right direction (X direction). “Δ” indicates a case where the breaking line due to tearing on the back surface portion 10a is slightly curved but is broken smoothly. “X” indicates a case where a breaking line due to tearing on the back surface portion 10a is greatly curved or a case where the inner layer 63 cannot be torn and extends in the vertical direction (Y direction) to stop the breaking.

  As is clear from Table 1, all of Examples 1 to 6 in which the first intermediate layer 62 made of polyethylene terephthalate is adjacent to the inner layer 63 are smoothly broken from the back seal portion 15 in the left-right direction (X direction). It was. On the other hand, in Comparative Examples 1 to 5 in which the inner layer 63 is not adjacent to polyethylene terephthalate, breakage occurred due to the curve of the break line or the elongation of the inner layer 63.

DESCRIPTION OF SYMBOLS 10 Package 10a Back surface part 10b Front surface part 10c Side surface part 14a, 14b Edge seal part 15 Back seal part 16 Storage part 60 Laminated film 61 Outer layer 61a Cut 62 First intermediate layer 63 Inner layer 64 Second intermediate layer

Claims (5)

A back seal portion extending in the vertical direction by joining the opposite edges of the laminated film having at least an outer layer and an inner layer made of a heat-adhesive resin, and a back portion and a back portion provided with the back seal portion In a packaging body that has an edge seal portion that is thermally bonded to the opposite front surface portion at the upper and lower ends, and stores contents,
The laminated film has a first intermediate layer made of polyethylene terephthalate laminated adjacent to the inner layer between the outer layer and the inner layer, and is easily tearable in a direction perpendicular to the extending direction of the back seal portion. A package characterized by having.   The package according to claim 1, wherein the first intermediate layer has easy tearability in a direction orthogonal to an extending direction of the back seal portion.   The said laminated film has the 2nd intermediate | middle layer which has easy tear property in the direction orthogonal to the extension direction of the said back seal | sticker part between the said outer layer and the said 1st intermediate | middle layer. Packaging body.   The package according to any one of claims 1 to 3, wherein an opening start portion is provided in the back seal portion.   The melting point of each layer which comprises the said laminated | multilayer film is 100 degreeC or more, The package body in any one of Claims 1-4 characterized by the above-mentioned.

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