JP2015160640A - Packaging bag and package using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag which secures visibility by freezing a sealed package by sealing contents into the packaging bag, suppressing the adhesion of frost to an indication of a surface of the printed package in the circulation of the package or its sales process, and is excellent in the discharge performance of a boiling liquid when taking out the package from the boiling liquid after boiling and cooking the package.SOLUTION: A packaging bag 10 comprises: a bag main body constituted of a laminated film 1 forming at least a front face, and a laminated film 2 forming a rear face; and an exterior member 3 attached to a surface of the bag main body. At least three sides of the exterior member 3 are attached to the surface of the bag main body, at least one opening part 4 communicating with the outside is formed at a part of the exterior member 3, and the opening part 4 is not shorter than 1.5 mm in the shortest distance from a center point of the opening part up to an outside edge 16.

Description

  The present invention relates to a packaging bag and a package using the packaging bag. In particular, the present invention relates to a packaging bag for storing frozen packaging bags containing food from the outside and a package using the packaging bag.

  Conventionally, when food is stored in a packaging bag and frozen in a sealed state, frost adheres to the outside of the packaging bag and is printed on the surface of this frozen food packaging during distribution and sales of the packaging. Since the visibility of the display is impaired, various methods have been proposed as measures to prevent this.

  For example, Patent Document 1 includes an inner bag that contains contents, and an outer bag that covers the inner bag and is joined to the inner bag, and a part of a portion where the inner bag and the outer bag are joined. Discloses a packaging bag in which an air passage is formed (Patent Document 1).

JP 2012-012082 A

  However, if only the packaging bag as described above is used, the air passage may be blocked depending on the filling amount or the filling method of the contents, and frost adhesion may not be sufficiently prevented.

  The present invention is for solving the above-mentioned problem, and freezes a package sealed with the contents sealed in the packaging bag, and the surface of the printed packaging bag is distributed in the distribution or sales process of the package. Packaging that suppresses the formation of frost on the display to ensure visibility, and is excellent in discharging the boiled liquid when the package is taken out of the boiled liquid after cooking by boiling the package of the present invention. The purpose is to provide a bag.

  The above object is achieved by the present invention described below. That is, the packaging bag of the present invention is a packaging bag comprising a bag body composed of at least a laminated film forming a front surface and a laminated film forming a rear surface, and an exterior member attached to the surface of the bag body. And at least three sides of the exterior member are attached to the surface of the bag body, and at least one opening communicating with the outside is formed in a part of the exterior member, and the opening is a center point of the opening. The shortest distance from the outer edge to the outer edge is 1.5 mm or more.

  Moreover, the packaging bag of this invention is a partition member for partitioning between the laminated film which forms at least a front surface, the laminated film which forms a back surface, the laminated film which forms the said front surface, and the laminated film which forms the said back surface And at least one opening that communicates with the outside is formed on either the front surface or the rear surface, and the opening is the shortest distance from the center point of the opening to the outer edge. Is 1.5 mm or more.

Moreover, the packaging bag of this invention WHEREIN: The said opening part is formed in the edge part vicinity of the lower edge part of the said packaging bag, It is characterized by the above-mentioned.
The package of the present invention is characterized in that the content is a frozen food.

According to the packaging bag of the present invention, at least one opening that communicates with the outside is formed in the contents storage portion and the laminated film that is joined to the outside, and the shortest distance from the center point of the opening to the outer edge Is 1.5 mm or more, so that even if frost is generated in the contents storage portion due to freezing of the contents, frost is not generated on the surface of the printed exterior member, and visibility can be ensured. it can.
Moreover, since the shortest distance from the center point of an opening part to an outer edge is 1.5 mm or more, it can shorten the time which discharges the liquid for boil from a packaging bag after cooking by boiling the packaging body of this invention. .

It is a front view of the packaging bag which concerns on the 1st Embodiment of this invention. It is AA sectional drawing in FIG. It is an exploded view of the packaging bag which concerns on the 1st Embodiment of this invention. It is sectional drawing of the package body in which the content was accommodated in the packaging bag which concerns on the 1st Embodiment of this invention, and was sealed by the upper seal part. It is an exploded sectional view of the packaging bag concerning a 1st embodiment of the present invention. It is explanatory drawing of the modification of the opening part which concerns on the packaging bag of this invention. It is a front view which shows the 1st modification of the packaging bag which concerns on the 1st Embodiment of this invention. It is a front view which shows the 2nd modification of the packaging bag which concerns on the 1st Embodiment of this invention. It is an exploded view showing the 2nd modification of a packaging bag concerning a 1st embodiment of the present invention. It is an exploded view which shows the 3rd modification of the packaging bag which concerns on the 1st Embodiment of this invention. It is a front view of the packaging bag which concerns on the 2nd Embodiment of this invention. It is BB sectional drawing in FIG. It is sectional drawing of the package body in which the content was accommodated in the packaging bag which concerns on the 2nd Embodiment of this invention, and was sealed with the upper seal part. It is an exploded view of the packaging bag which concerns on the 2nd Embodiment of this invention. It is an exploded sectional view of the packaging bag concerning a 2nd embodiment of the present invention. It is a front view which shows the modification of the packaging bag which concerns on the 2nd Embodiment of this invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by the following embodiment. In addition, the constituent elements disclosed in the following embodiments can be appropriately combined.

[First Embodiment]
A packaging bag according to a first embodiment of the present invention will be described. FIG. 1 is a front view of a packaging bag according to the first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 3 is a packaging according to the first embodiment of the present invention. FIG. 4 is an exploded view of the bag, and FIG. 4 is a cross-sectional view of the package 20 in which the content 13 is housed in the packaging bag according to the first embodiment of the present invention and sealed with the upper seal portion 5. FIG. 5 is an exploded cross-sectional view of the packaging bag according to the first embodiment of the present invention.
As shown in FIGS. 1 to 5, in the first embodiment, the packaging bag 10 includes the contents of the laminated film 1 that forms the front surface and the peripheral edges of the laminated film 2 that forms the rear surface that face each other. A bag body 9 that stores the contents by joining the edges of the side seal portion 6 and the bottom seal portion 7 while leaving the upper edge portion for storage, and the side seal portion 6 and the bottom portion on the surface of the bag body 9 A packaging bag including an exterior member 3 joined at an edge of the seal portion 7, and at least one opening 4 communicating with the outside is formed in a part of the exterior member 3. In addition, the location sealed after storing the contents in FIG. 1 is illustrated as an upper seal scheduled portion 5 ′. The contents 13 of the package of the present invention are frozen foods.

In the present invention, frozen food is food that is handled at least at a low temperature of −18 ° C. or less at the time of sale. In addition, it may be in a frozen state not only at the time of sale but also at the time of manufacture or distribution.
The frozen food is, for example, hamburger, meatballs, processed fishery products, yakisoba, yaki udon, rice, or a cooked food similar thereto.

(Bag body)
The bag body 9 includes a laminated film 1 that forms at least a front surface and a laminated film 2 that forms a rear surface.
As shown in FIG. 5, the laminated film 1 that forms the front surface constituting the bag body 9 and the laminated film 2 that forms the rear surface include at least a base material layer 11 and a thermal adhesive resin layer 12 that is the innermost layer.
The thickness of the laminated film 1 that forms the front surface and the laminated film 2 that forms the rear surface is not particularly limited as long as it has the desired impact resistance and handleability, and may be, for example, 10 μm to 100 μm. it can. In addition, from the standpoint of self-supporting properties, it is preferable that the laminated films forming the front surface and the rear surface have the same thickness.
Further, an intermediate layer may be provided between the base material layer 11 and the thermoadhesive resin layer 12. Further, a heat adhesive resin layer 12 may be further laminated on the base material layer 11.
Moreover, you may provide the contact bonding layer which consists of an adhesive agent, an anchor coating agent, a thermoadhesive resin etc. between each layer.

  The base material layer 11 is selected from materials having printability, strength, heat resistance, and the like, and an unstretched or stretched film obtained by forming a resin such as polypropylene, polyester, or polyamide can be used. The base material layer 11 is preferably a film obtained by biaxially stretching the resin. In addition, gas barrier properties may be imparted to the base material layer 11 by vapor-depositing a single metal or an oxide such as silicon or aluminum.

  The heat-adhesive resin layer 12 may be any material that can be melted by heat and fused to each other. For example, low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear (linear) low-density polyethylene, polypropylene , Ethylene-vinyl acetate copolymer, ionomer resin, ethylene-ethyl acrylate copolymer, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, ethylene-propylene copolymer, methylpentene polymer, polyethylene or A film made of one or more kinds of acid-modified polyolefin resins obtained by modifying polyolefin resins such as polypropylene with acrylic acid, methacrylic acid, maleic anhydride, fumaric acid, and other unsaturated carboxylic acids, and other resins Alternatively, it can be used in the form of a sheet. Polyethylene may be obtained by polymerizing ethylene derived from biomass as a raw material.

  The intermediate layer is formed, for example, by forming a film formed by forming a polyvinyl alcohol resin to form a barrier, and by forming a resin made of a saponified ethylene-vinyl acetate copolymer. Barrier films such as films, polyacrylonitrile, MXD6 nylon (polyamide or polyamide copolymer containing 90 mol% or more of amide structural units formed by polycondensation reaction of methaxylenediamine and adipic acid), metal foils such as aluminum Files with moisture-proof coatings such as vinylidene chloride on the various films mentioned above, films in which simple metals or oxides such as silicon and aluminum are directly deposited on a support made of polyester, polypropylene, polyamide, polycarbonate, etc. Can be used. Moreover, as an intermediate | middle layer, in order to provide light-shielding property, the film etc. which vapor-deposited aluminum on the aluminum foil and the film can be used, for example. Moreover, as an intermediate | middle layer, in order to improve the intensity | strength of an intermediate | middle layer, the support body which consists of films, such as polyester, a polypropylene, polyamide, a polycarbonate, can be used, for example.

The adhesive layer is for increasing the adhesive force between the layers described above, and the adhesive layer is a layer having a function of increasing the adhesive force between the base material layer 11, the intermediate layer, and the thermal adhesive resin layer 12. is there.
When the adhesive layer is formed using an adhesive, it is formed by a dry lamination method. Examples of laminating adhesives include one-part or two-part cured or non-cured vinyl, (meth) acrylic, polyamide, polyester, polyether, polyurethane, epoxy, and rubber. Other types of adhesives such as a solvent type, an aqueous type, and an emulsion type can be used. As a coating method of the above laminating adhesive, for example, a laminated film is constituted by a direct gravure roll coating method, a gravure roll coating method, a kiss coating method, a reverse roll coating method, a fountain method, a transfer roll coating method, and other methods. It can apply | coat to the application surface of a layer. The coating ^{amount, 0.1g / m 2 ~10g / m} 2 ( dry) are ^{preferred, 1g / m 2 ~5g / m} 2 ( dry) is more preferable.

  When the adhesive layer is formed using a thermoplastic resin, the adhesive layer is formed by a melt extrusion lamination method. Thermoplastic resins that can be used for the adhesive resin layer include low density polyethylene resin (LDPE), medium density polyethylene resin (MDPE), high density polyethylene resin (HDPE), linear low density polyethylene resin (LLDPE), and metallocene catalyst. Copolymer resin with ethylene / α-olefin polymerized by using, ethylene / polypropylene copolymer resin, ethylene / vinyl acetate copolymer resin, ethylene / acrylic acid copolymer resin, ethylene / ethyl acrylate copolymer Resin, ethylene / methacrylic acid copolymer resin, ethylene / methyl methacrylate copolymer resin, ethylene / maleic acid copolymer resin, ionomer resin, polyolefin resin, unsaturated carboxylic acid, unsaturated carboxylic acid, unsaturated carboxylic acid Graft polymerization or copolymerization of anhydride and ester monomers Resin, maleic anhydride and the like can be used a graft modified resin to a polyolefin resin. These materials can be used alone or in combination of two or more.

(Exterior material)
The exterior member 3 is a film that is attached to the surface of the bag body 9 leaving an unsealed portion. In addition, the exterior member 3 is provided with a print display for displaying product contents, patterns, and the like.
As shown in FIG. 5, the exterior member 3 may be composed of at least a base material layer 11, and a heat adhesive resin layer 12 may be laminated on the base material layer 11.
Moreover, you may provide the contact bonding layer which consists of an adhesive agent, an anchor coating agent, a thermoadhesive resin etc. between each layer.
In the present embodiment, the attachment of the exterior member to the bag body 9 means not only to join the exterior member separate from the bag body 9 to the bag body, but also to bend a part of the laminated film on the front and back surfaces constituting the bag body. It is also a concept that includes an exterior member.

The base material layer 11 constituting the exterior member 3 is selected from materials having printability, strength, heat resistance, etc., and the base film constituting the laminated film 1 forming the front surface and the laminated film 2 forming the rear surface; Similar materials can be used.
Moreover, since it becomes difficult to follow the shape of the bag body 9 by providing the base material layer 11 in the exterior member 3, the exterior member 3 and the package body 20 are filled with the contents and sealed in the bag body 9. Since an empty wall is formed at the edge of the bag body 9 that is not bonded, it is easy to communicate between the bag body 9 and the exterior member 3 with the atmosphere. Frost adhesion can be reliably prevented.

  The heat-adhesive resin layer 12 that constitutes the exterior member 3 may be any material that can be melted by heat and fused to each other. The heat that constitutes the laminated film 1 that forms the front surface and the laminated film 2 that forms the rear surface. The same material as the adhesive resin layer can be used.

  The bag body 9 and the exterior member 3 may be bonded by applying hot melt or an adhesive, or may be bonded using a thermocompression bonding method or an ultrasonic method.

Although 1st Embodiment connects between the bag main body 9 and the exterior member 3 with air | atmosphere, the frost adhesion to the printing display formed in the exterior member 3 is prevented. In consideration of making it difficult to follow the bag body 9, the exterior member 3 is preferably joined to the bag body 9 on at least three sides.
In addition, when the package of the present invention is boiled and cooked, when the package is taken out of the boil liquid, the boil liquid is guided intermittently rather than intermittently in consideration of inducing the boil liquid to drip in the intended direction. That is, it is preferable to join along the edge of the bag body because the liquid for boil can be reliably discharged from the position of the opening 4 described later.
The exterior member 3 may be formed so as to overlap the side seal portion 6 and the bottom seal portion 7 of the bag body 9 or may be formed so as not to overlap.

(Aperture)
At least one opening 4 is formed in the exterior member to communicate with the outside, and is formed in the unsealed portion of the exterior member 3. By forming the opening at a desired position, it is possible to guide the boil liquid to drip in the intended direction.
Regarding the size of the opening, the shortest distance d ₁ from the center point of the opening to the outer edge 16 is preferably 1.5 mm or more. Thus, even if frost is generated in the bag body 9 due to the freezing of the contents, frost is not generated on the surface of the exterior member 3, so that the visibility of the printed display provided on the exterior member 3 is ensured. Can do.
The shortest distance d ₁ from the center point of the opening 4 to the outer edge 16 is preferably in the range of 1.5 mm or more and 5 mm or less, and more preferably in the range of 2.5 mm or more and 5 mm or less. If the shortest distance d ₁ from the center point to the outer edge 16 is less than 1.5 mm, it is difficult to communicate with the outside, and frost tends to adhere to the surface of the exterior member.

The position where the opening 4 is formed is formed in an unsealed portion of the exterior member 3, that is, in a region inside the adhesion region between the bag body 9 and the exterior member 3.
Further, the position where the opening is formed is preferably near the end of the lower edge of the packaging bag 10. By this, after boiling and cooking the package of the present invention, when removing the package from the boil liquid, the boil liquid accumulated at the end of the lower edge of the exterior member is efficiently discharged to the outside. Can do.
For example, when opening the upper part of the packaging bag and taking out the contents after cooking, if an opening is formed at the end of the lower edge of the bottom sealing part 7 side of the packaging bag, the liquid for boiling when taking out the contents This is preferable because the dripping of the liquid can be suppressed.
The positions L ₁ and L ₂ for forming specific openings are preferably provided in the range of 3 mm or more and 15 mm or less from the inner seal line of the side seal part 6 of the packaging bag, and in the range of 3 mm or more and 8 mm or less. More preferably.
Moreover, when the form of the packaging bag is a packaging bag having no gusset such as a three-way seal, the positions L ₁ and L ₂ for forming the opening are the inner seals of the side seal part 6 or the bottom seal part 7 of the packaging bag. It is preferably provided in the range of 3 mm or more and 15 mm or less from the line, and more preferably provided in the range of 3 mm or more and 8 mm or less.
In FIG. 1, the distance from the inside seal line of the packaging bag bottom seal portion 7 is indicated by L _1, the distance from the inside seal line of the side seal portion 6 is indicated by L _2.

The shape of the opening may be an ellipse as shown in FIG. 6 (a) in addition to the circle as shown in FIG. 1, or a polygon such as a rectangle as shown in FIG. 6 (b). The shape may be sufficient, and an ellipse may be sufficient as shown in FIG.6 (c).
The oval is composed of two straight lines and two arcs, and arcs are connected to both ends of the straight line. Moreover, it is good also as what is equipped with a circular arc at the both ends of a straight line instead of a circular arc.
The quadrangle includes a parallelogram, a rhombus, and a trapezoid.
As the shape of the opening, since breakage may occur with the corner as a base point, a circle, an ellipse, or an oval with no corner is preferred.

  As shown in FIG. 7, two or more openings 4 may be provided. By providing a plurality of openings, the boil liquid can be efficiently discharged to the outside.

FIG. 8 is a front view showing a second modification of the packaging bag according to the first embodiment of the present invention.
As shown in FIG. 8, in the case of a standing pouch having a folding part 17 at the bottom or a side gusset pouch having a folding part on a side part (not shown), the opening 4 is provided in a region inside the folding part 17. It is preferable to form. Thus, even after the packaging body is taken out from the boil liquid, the boil liquid can be discharged to the outside even when the packaging bag is filled with the contents and stood up.
Further, the distance L ₃ from the folded portion 17 of the gusset portions, 3 mm or more, preferably formed in the range 15 mm, 3 mm or more, and more preferably formed on the range 8 mm.
In FIG. 8, the distance from the folded portion 17 of the bottom film (gusset film) is shown in L _3, the distance from the inside seal line of the side seal portion 6 is indicated by L _2.

FIG. 9 is an exploded view of the packaging bag of FIG.
The packaging bag of the present embodiment includes a bottom film 14 between the exterior member 3 in which the opening 4 is formed, the laminated film 1 that forms the front surface, and the laminated film 2 that forms the rear surface. By providing the bottom film 14, the bag can be held in an upright state.
Cutouts 15 may be formed on both sides of the bottom film 14. Through this cutout 15, the opposed portions of the front surface and the rear surface can be heat sealed.
Examples of the material used for the bottom film 14 include the same materials as the laminated film 1 that forms the front surface and the laminated film 2 that forms the rear surface.
Moreover, the thickness of the bottom film 14 can be made the same thickness as the laminated film 1 that forms the front surface and the laminated film 2 that forms the rear surface.

FIG. 10 is an exploded view showing a third modification of the packaging bag according to the first embodiment of the present invention.
The exterior member is not only attached to one of the laminated film 1 forming the front surface and the laminated film 2 forming the rear surface, but as shown in FIG. 10, the laminated film 1 forming the front surface and the laminated film forming the rear surface. 2 may be attached to both sides. Even if frost is generated on both surfaces of the bag body 9 due to the freezing of the contents by attaching both of the laminated film 1 forming the front surface and the laminated film 2 forming the rear surface, the exterior member is provided for each exterior member. Since frost is not generated on the surface of 3, the visibility of the printed display provided on the exterior member 3 can be ensured.

[Second Embodiment]
A packaging bag 30 according to a second embodiment of the present invention will be described. In the following description and the drawings used in the following description, the same reference numerals as those in the first embodiment are used for portions configured in the same manner as in the first embodiment, and redundant descriptions are omitted.
11 is a front view of a packaging bag according to a second embodiment of the present invention, FIG. 12 is a cross-sectional view taken along line BB in FIG. 10, and FIG. 13 is a second embodiment of the present invention. FIG. 14 is an exploded view of the packaging bag according to the second embodiment of the present invention. FIG. 14 is a cross-sectional view of the packaging body 40 in which the contents are housed in the packaging bag and sealed with the upper seal portion. FIG. 15 is an exploded sectional view of the packaging bag according to the second embodiment of the present invention.

As shown in FIG. 14, the packaging bag according to the second embodiment of the present invention partitions at least the laminated film 1 that forms the front surface, the laminated film 2 that forms the rear surface, and the front surface and the rear surface. And a partition member 31.
Next, the partition member 31 joins the opposing peripheral edge portions of the laminated film 1 that forms the front surface. Thereafter, the bag body 9 is formed by joining the peripheral edge portions facing the laminated film 2 forming the rear surface, leaving the upper edge portion for storing the contents, as shown in FIGS. 11 and 12. The packaging bag 30 can be manufactured.

As a constituent material of the packaging bag according to the second embodiment of the present invention, as shown in FIG. 15, the laminated film 1 forming the front surface and the laminated film 2 forming the rear surface are at least the base material layer 11 and the innermost layer. The heat-adhesive resin layer 12 is provided. Further, an intermediate layer may be provided between the base material layer 11 and the thermoadhesive resin layer 12. Further, a heat adhesive resin layer 12 may be further laminated on the base material layer 11. Moreover, you may provide the contact bonding layer which consists of an adhesive agent, an anchor coating agent, a thermoadhesive resin etc. between each layer.
The material which comprises the base material layer 11, the heat bondable resin layer 12, an intermediate | middle layer, and an adhesive layer can use the material similar to the material of the packaging bag which concerns on 1st Embodiment.
The thickness of the laminated films 1 and 2 forming the front surface and the rear surface is not particularly limited as long as it has impact resistance and handleability, and can be, for example, 10 μm to 100 μm. In addition, it is preferable that the thickness of a front surface and a rear surface is the same from a viewpoint of independence.

(Partition member)
The partition member 31 is a member that is provided in the packaging bag 30 and partitions the front and rear laminated films 1 and 2. By the partition member 31, the packaging bag 30 is divided into a region for storing contents (bag body 9) and a region communicating with the outside.
The shape of the partition member 31 does not have to be the same shape as the laminated films 1 and 2 that form the front surface and the rear surface, and can be provided up to the side seal portion 6 and the bottom seal portion 7 that are the periphery of the packaging bag 30. As long as it is, it can be made into an arbitrary shape.
FIG. 11 shows the partition member 31 having a shape slightly smaller than the laminated films 1 and 2 forming the front and rear surfaces.
The thickness of the partition member 31 is not particularly limited as long as the partition member 31 has desired impact resistance and handleability, and may be, for example, 50 μm to 100 μm.

The partition member 31 includes the thermoadhesive resin layer 12 on at least both surfaces of the base material layer 11 and the base material layer 11. FIG. 15 shows a base material layer 11 and a partition member 31 in which the thermoadhesive resin layer 12 is laminated on both surfaces of the base material layer 11. By laminating the heat-adhesive resin layer 12 on both surfaces of the base material layer, thermocompression bonding can be performed from the outside through the partition member 31 between the films with the laminated films 1 and 2 forming the front and rear surfaces.
In addition, the partition member 31 may include an intermediate layer between the base material layer 11 and the thermoadhesive resin layer 12. The partition member 31 is preferably made of a material that does not transmit oxygen, water vapor, liquid, or the like. Thereby, the quality of the contents in the bag body 9 can be maintained.
Moreover, you may provide the contact bonding layer which consists of an adhesive agent, an anchor coating agent, a thermoadhesive resin etc. between each layer.
The material which comprises a base material layer, a heat bondable resin layer, an intermediate | middle layer, and an adhesive layer can use the material similar to the material of the packaging bag which concerns on 1st Embodiment.

(Aperture)
At least one or more openings 4 are formed in any one of the laminated film 1 that forms the front surface and the laminated film 2 that forms the rear surface. For example, as shown in FIG. 11, the opening 4 is formed in the laminated film 1 that forms the front surface. And the laminated film in which the opening part 4 was provided, ie, the laminated film 1 which forms the front surface, is provided with a print display for displaying the product content, the design, and the like.
As for the size of the opening, the shortest distance d ₁ from the center point of the opening 4 to the outer edge 16 is preferably 1.5 mm or more. Thus, even if frost is generated in the content storage portion due to freezing of the content, frost does not occur on the printed external surface, and visibility can be ensured.
The shortest distance d ₁ from the center point of the opening 4 to the outer edge 16 is preferably in the range of 1.5 mm or more and 5 mm or less, and more preferably in the range of 2.5 mm or more and 5 mm or less. If the shortest distance d ₁ from the center point to the outer edge 16 is less than 1.5 mm, it is difficult to communicate with the outside, and frost tends to adhere to the surface of the exterior member.

As shown in FIG. 11, the position where the opening 4 is formed is formed in a region inside the bonding region between the laminated film 1 forming the front surface and the partition member 31.
Further, the position where the opening is formed is preferably near the end of the lower edge of the packaging bag 30. Thus, when the package of the present invention is boiled and cooked, and the package is removed from the boil liquid, the boil liquid accumulated between the laminated film 1 forming the front surface and the partition member 31 is efficiently removed. It can be discharged to the outside.
For example, when opening the upper part of the packaging bag and taking out the contents after cooking, if an opening is formed at the end of the lower edge of the bottom sealing part 7 side of the packaging bag, the liquid for boiling when taking out the contents This is preferable because the dripping of the liquid can be suppressed.
The positions L ₁ and L ₂ for forming specific openings are preferably provided in the range of 3 mm or more and 15 mm or less from the inner seal line of the side seal part 6 of the packaging bag, and in the range of 3 mm or more and 8 mm or less. More preferably.
Further, when the packaging bag is a packaging bag having no gusset such as a three-way seal, the positions L ₁ and L ₂ for forming the opening are the bottom seal portion 7 or the upper seal portion (upper seal planned) of the packaging bag. 3 mm and 15 mm or less, more preferably 3 mm or more and 8 mm or less.
11, the distance from the inside seal line of the packaging bag bottom seal portion 7 is indicated by L _1, the distance from the inside seal line of the side seal portion 6 is indicated by L _2.

  The shape of the opening may be an ellipse, a polygon such as a rectangle, or an oval as shown in FIG. 6 in addition to the circle as shown in FIG. Among these, a circle, an ellipse, and an oval are preferable.

As shown in FIG. 16, in the case of a standing pouch having a folding part 17 at the bottom or a side gusset pouch having a folding part on the side, not shown, an opening is formed in a region inside the folding part 17 It is preferable to do. Thus, even after the packaging body is taken out from the boil liquid, the boil liquid can be discharged to the outside even when the packaging bag is filled with the contents and stood up.
Further, the distance L ₃ from the folded portion 17 of the gusset portions, 3 mm or more, preferably formed in the range 15 mm, 3 mm or more, and more preferably formed on the range 8 mm.

  As described above, the packaging bag 30 includes the partition member 31 in the bag body, and the partition member 31 is provided up to the regions of the side seal portion 6 and the bottom seal portion 7 of the container body 11, thereby Is divided into a bag main body 9 and a region communicating with the outside through the opening. The packaging bag 30 can maintain the preservability of the contents such as food stored in the bag body 9 in a high state. Moreover, since the shortest distance from the center point of the opening to the outer edge 16 is 1.5 mm or more, even if frost is generated in the partition member 31 due to freezing of the contents, the laminated film in which the opening 4 is formed No frost is generated on the surface, and the visibility of the printed display provided on the laminated film in which the opening 4 is formed can be ensured. In addition, by forming the opening at a desired position, when the package of the present invention is boiled and cooked, when the package is taken out of the boil liquid, the boil liquid is guided to drop in the intended direction. Therefore, dripping at the time of taking out the contents can be suppressed.

  Next, the present invention will be specifically described with reference to examples. However, the present invention is not limited by these examples.

<Example 1>
[Laminated film 1 forming the front]
Biaxially stretched as a base material layer using a low-density polyethylene film (thickness 25 μm) as the outermost first heat-adhesive resin layer, using an ethylene vinyl alcohol copolymer film (thickness 15 μm) as the intermediate layer Nylon film (thickness 15 μm) is used, and the second heat-adhesive resin layer that is the innermost layer is a low-density polyethylene film (thickness 40 μm), which is dry-laminated via a urethane two-component curable adhesive. A laminated film 1 was prepared by sequentially laminating and forming the front surface. The layer structure is low density polyethylene film / adhesive layer / ethylene vinyl alcohol copolymer film / adhesive layer / biaxially stretched nylon film / adhesive layer / low density polyethylene film. The laminated film 1 was formed by cutting into a rectangle having a height dimension of 175 mm and a width dimension of 150 mm.

[Laminated film 2 for forming the rear surface]
The laminated film 2 forming the rear surface obtained the same layered laminated film in the same manner as the laminated film 1 forming the front surface. Thereafter, it was cut into the same shape as the laminated film 1 forming the front surface.

[Exterior member 3]
Using a biaxially stretched nylon film (thickness 25 μm) as the base material layer and a low-density polyethylene film (thickness 30 μm) as the heat-adhesive resin layer, dry lamination via a urethane two-component curable adhesive The exterior member 3 was prepared by sequentially laminating by the method.
Subsequently, the pattern was printed on the base material layer side. Two exterior members 3 were cut into the same shape and size as the laminated film 1 to form two sheets.
Thereafter, the shortest distance d1 from the center point of the opening 4 to the outer edge 16 at a position 5 mm from the side edge of the exterior member 3 and a position 5 mm from the lower end, that is, the opening 4 made of a circle having a radius of 2.5 mm is 1 Formed.

[Production of packaging bag 10]
The first exterior member 3 in which the opening 4 is formed, the laminated film 1 that forms the front surface, and the laminated film 2 that forms the rear surface are laminated in order, and the upper heat-scheduled portion is left, and the three ends are heat-sealed. Then, the side seal portion 6 and the bottom seal portion 7 of the bag main body are formed, and the first outer member 3 is attached to the bag main body 9 so that the outer member is attached to the front side surface of the bag main body 9. I got a bag. The side seal portion 6 (side seal portion of the exterior member) and the bottom seal portion 7 (bottom seal portion of the exterior member) of the bag body are provided from the end of the bag body, and the seal width is 5 mm. .

<Example 2>
Example 2 is an example of a packaging bag that is the same as Example 1 except that the radius of the opening 4 is changed to 5.0 mm.

<Example 3>
Example 3 is an example of a packaging bag that is the same as Example 1 except that the radius of the opening 4 is changed to 1.5 mm.

<Comparative Example 1>
Comparative Example 1 is an example of a packaging bag that is the same as Example 1 except that the radius of the opening is changed to 0.5 mm.

<Comparative Example 2>
[Laminated film forming the front]
The laminated film forming the front surface was the same as in Example 1.
[Laminated film forming the back]
The laminated film forming the rear surface was the same as in Example 1.
[Exterior material]
The exterior member was the same as Example 1 except that the dimensions were cut to a height of 100 mm and a width of 150 mm and no opening was formed.
[Production of packaging bags]
The first exterior member in which no opening is formed, the laminated film that forms the front surface, and the laminated film that forms the rear surface are stacked one on top of the other, leaving the upper heat-sealed portion, and heat-sealing the three end portions, The side seal portion 6 and the bottom seal portion 7 of the main body are formed, and the first exterior member is attached at a position 10 mm from the lower end of the bag main body, so that an opening is formed on the front surface of the bag main body. A packaging bag with no exterior member attached was obtained. The side seal portion 6 (side seal portion of the exterior member) and the bottom seal portion 7 (bottom seal portion of the exterior member) of the bag body are provided from the end of the bag body, and the seal width is 5 mm. .

<Example 4>
[Laminated film 1 forming the front]
The laminated film 1 forming the front surface uses a biaxially stretched nylon film (thickness of 25 μm) as a base material layer, and uses a low-density polyethylene film (thickness of 30 μm) as a heat-adhesive resin layer. Lamination was sequentially performed by a dry lamination method through a curable adhesive to prepare a laminated film of a layer structure, biaxially stretched nylon film / adhesive layer / low density polyethylene film.
Subsequently, the pattern was printed on the base material layer side. The laminated film 1 was formed by cutting into a rectangle having a height dimension of 175 mm and a width dimension of 150 mm.
Thereafter, the shortest distance d1 from the center point of the opening 4 to the outer edge 16 at a position 5 mm from the side edge of the laminated film 1 forming the front surface and a position 5 mm from the lower end, that is, an opening made of a circle having a radius of 2.5 mm. One part 4 was formed.

[Laminated film 2 for forming the rear surface]
The laminated film 2 forming the rear surface was obtained in the same manner as the laminated film 1 forming the front surface, and a laminated film having the same layer structure was obtained. Thereafter, it was cut into the same shape as the laminated film 1 forming the front surface. In addition, the opening part 4 was not formed in the laminated | multilayer film 2 which forms a back surface.

[Partition member 31]
The partition member 31 uses a low-density polyethylene film (thickness 25 μm) as the first heat-adhesive resin layer that is the outermost layer, and uses an ethylene vinyl alcohol copolymer film (thickness 15 μm) as the intermediate layer. As a biaxially stretched nylon film (thickness 15 μm), as the second heat-adhesive resin layer as the innermost layer, a low-density polyethylene film (thickness 40 μm) is used, and a urethane two-component curable adhesive is used. The layers are laminated in order by dry lamination, and the layer structure is a laminate of low density polyethylene film / adhesive layer / ethylene vinyl alcohol copolymer film / adhesive layer / biaxially stretched nylon film / adhesive layer / low density polyethylene film. A film was prepared. Thereafter, it was cut into the same shape as the laminated film 1 forming the front surface.

[Production of packaging bag 30]
First, the partition member 31 and the adhesive resin layer side of the laminated film 1 forming the front face were opposed to each other, and the peripheral edge portions facing each other were heat-sealed and joined. Next, the laminated film 2 that forms the rear surface and the adhesive resin layer side of the partition member 31 are opposed to each other in order, and the front and rear surfaces are rearranged by heat-sealing the three end portions leaving the upper seal planned portion. The packaging bag 30 provided with the partition member for partitioning between was obtained. The side seal portion 6 and the bottom seal portion 7 of the bag body were provided from the end of the bag body, and the seal width was 5 mm.

<Example 5>
Example 5 is an example of a packaging bag 30 that is the same as Example 4 except that the radius of the opening 4 is changed to 5.0 mm.

<Example 6>
Example 6 is an example of a packaging bag 30 that is the same as Example 4 except that the radius of the opening 4 is changed to 1.5 mm.

<Comparative Example 3>
Comparative Example 3 is an example of a packaging bag that is the same as Example 5 except that the radius of the opening is changed to 0.5 mm.

<Comparative Example 4>
[Laminated film forming the front]
The laminated film forming the front surface was the same as Example 5 except that no opening was formed.
[Laminated film forming the back]
The laminated film forming the rear surface was the same as in Example 5.
[Partition material]
The partition member was the same as in Example 5.
[Production of packaging bags]
A packaging bag provided with a partition member for partitioning the front surface and the rear surface was manufactured by the same manufacturing method as in Example 5.

<Test>
The following tests were conducted using the packaging bags of Examples 1 to 6 and Comparative Examples 1 to 4.

[appearance]
A hamburger was vacuum-filled from the upper opening of the packaging bag to form an upper seal portion. Thereafter, it is stored in a freezer at −30 ° C. for 2 hours, and after boiling for 30 minutes at 90 ° C., Examples 1 to 3 and Comparative Examples 1 and 2 are provided with the exterior member pattern, Examples 4 to About 6 and Comparative Examples 3-4, the external appearance of the part which provided the pattern of the laminated | multilayer film which forms a front surface was observed visually. The number of samples (n number) of each packaging bag in the examples and comparative examples was set to 5.
○: No frost is generated ×: Frost is generated

[Emissions]
A hamburger was vacuum-filled from the upper opening of the packaging bag to form an upper seal portion. Thereafter, after the boil treatment at 90 ° C. for 30 minutes, the dischargeability of the boil liquid (warm water) was evaluated.
A: The boil liquid could be discharged and the discharge time was less than 10 seconds.
○: The boil liquid could be discharged, and the discharging time was 10 seconds or more and less than 20 seconds.
X: The liquid for boil remained or the discharge time was 20 seconds or more.

  The results of the above test are shown in Table 1. As can be seen from Table 1, the packaging bags of Examples 1 to 6 showed superior characteristics in terms of appearance after boiling and discharge properties, compared with the packaging bags of Comparative Examples 1 to 4.

DESCRIPTION OF SYMBOLS 1 Laminated film which forms the front surface 2 Laminated film which forms the back surface 3 Exterior member 4 Opening part 5 Upper seal part 5 'Upper seal planned part 6 Side seal part 7 Bottom seal part 9 Bag body 10, 30 Packaging bag 11 Base material Layer 12 Thermal adhesive resin layer 13 Contents 14 Bottom film 15 Notch 16 Outer edge 17 Folded part 20, 40 Package 31 Partition member

Claims (4)

A bag body comprising at least a laminated film forming a front surface and a laminated film forming a rear surface, and an exterior member attached to the surface of the bag body,
At least three sides of the exterior member are attached to the surface of the bag body,
At least one opening communicating with the outside is formed in a part of the exterior member,
The packaging bag, wherein the opening has a minimum distance of 1.5 mm or more from the center point of the opening to the outer edge. A packaging bag comprising: a laminated film that forms at least a front surface; a laminated film that forms a rear surface; and a partition member that partitions between the laminated film that forms the front surface and the laminated film that forms the rear surface. ,
At least one opening communicating with the outside is formed on either the front surface or the rear surface,
The packaging bag, wherein the opening has a minimum distance of 1.5 mm or more from the center point of the opening to the outer edge.   The packaging bag according to claim 1, wherein the opening is formed near an end portion of a lower edge of the packaging bag. A package comprising the packaged bag according to any one of claims 1 to 3 and frozen food as a content.

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