JP2017226440A - Packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag which can store confectionery or the like in a bulk state, without providing a tray in the packaging bag, and which can be used as a container after being opened.SOLUTION: The invention relates to a packaging bag formed of one lamination film having a surface side film, a folded part, and a rear side film in the order, in which, in a state in which the surface side film and the rear side film are lapped through the folded part, the folded part and an upper joint part are arranged so as to face each other, in a vertical direction, and side joint parts for connecting the folded part and the upper joint part are arranged so as to face each other in a lateral direction, namely joint parts are formed in three-directions, the upper joint part has a mountain-shaped part which is swollen outward, and a non-junction part where the surface side film and the rear side film are not jointed, is provided on an outside of an outer edge of the upper joint part, in which the upper joint part and the side joint parts can be peeled.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a packaging bag for storing snack confectionery, cookies, biscuits, chocolate confectionery, hail, snacks and the like in a rose state, and more particularly to a packaging bag in which the opened packaging bag is directly used as a container.

  Conventionally, snacks, cookies, biscuits, chocolate confectionery, candy, snacks, and other confectionery are packaged in various forms of packaging bags such as four-side sealed bags, gusset bags, pillow bags, and self-supporting bags. Further, when confectionery is fragile in a loose state, it is placed and packaged in a packaging bag while being displayed on a synthetic resin tray (see, for example, Patent Document 1).

  If there is no tray in the packaging bag, there is no inconvenience when eating alone, but when eating with many people, a container such as a plate must be prepared and the confectionery in the packaging bag must be transferred to the container. It is troublesome. In particular, it is inconvenient to bring a container when eating with many people outdoors.

  On the other hand, when the tray is loaded as in Patent Document 1, there is no such trouble and inconvenience as described above, but when opening the tray, since the tray is loaded, the tear piece of the opening is caught on the tray, It often happens that it cannot be opened smoothly. In addition, after packaging, when packaging bags are discarded, containers and packaging must be separated and collected due to the Containers and Packaging Recycling Law, etc. and must be disposed of separately as packaging bags and trays. It will take.

Japanese Utility Model Publication No. 4-26329

  Accordingly, the present invention has been made to solve the above-mentioned problems, and the object of the present invention is to accommodate confectionery and the like in a rose state without inserting a tray into the packaging bag, and as a container after opening. It is to provide an available packaging bag.

  In order to achieve the above-mentioned object, the present invention according to claim 1 is composed of a laminated film including a front film, a folded portion, and a back film in order, and the front film and the back film are the above-mentioned films. In a state of being polymerized via the folded portion, the folded portion and the upper joint portion are arranged to face each other up and down, and side joint portions that connect the folded portion and the upper joint portion are arranged to face each other. A packaging bag provided with a joint portion on three sides, wherein the upper joint portion has a mountain shape bulging outward, and the front side film and the back side film are located outward from the outer edge of the upper joint portion. A packaging bag comprising a non-bonded non-bonded portion, wherein the upper bonded portion and the side bonded portion are detachable.

  Further, the present invention according to claim 2 is the packaging bag according to claim 1, further comprising a strong bonding portion connected to the folded portion at a lower portion of the side portion bonding portion, wherein the strong bonding portion is the strong bonding. It is stronger than the peeling strength of the side joint part and the upper joint part excluding the part.

  Moreover, this invention of Claim 3 is provided with the hole which penetrates the said front side film and the said back side film in the said non-joining part in the packaging bag of Claim 1 or Claim 2, It is characterized by the above-mentioned. It is.

  According to a fourth aspect of the present invention, in the packaging bag according to any one of the first to third aspects, the front film and the back film can be peeled off at both corners of the upper edge of the non-joining portion. A point junction is provided.

  The packaging bag of the present invention does not have a tray inserted in the packaging bag, can accommodate confectionery and the like in a rose state, has excellent opening properties, and has excellent convenience that can be used as a container after opening.

It is a top view which shows 1st embodiment of the packaging bag which concerns on this invention. It is the YY sectional view taken on the line of FIG. It is explanatory drawing which shows the structural example of the laminated | multilayer film of the packaging bag which concerns on this invention. It is explanatory drawing which shows the state which opened the package which accommodated the content in the packaging bag of 1st embodiment which concerns on this invention. It is a top view which shows 2nd embodiment of the packaging bag which concerns on this invention.

The above-described present invention will be described in detail below with reference to the drawings.
1 is a plan view showing a first embodiment of a packaging bag according to the present invention, FIG. 2 is a cross-sectional view taken along line YY of FIG. 1, and FIG. 3 is an explanation showing an example of the configuration of a laminated film of the packaging bag according to the present invention. FIG. 4, FIG. 4 is explanatory drawing which shows the state which opened the package which accommodated the content in the packaging bag of 1st embodiment which concerns on this invention, FIG. 5 is a plane which shows 2nd embodiment of the packaging bag which concerns on this invention In the drawings, A and B are packaging bags, A ′ is an opened packaging bag, 1 is a front film, 2 is a back film, 3 is a folded portion, 4 is an upper joint, 4a is a vertex, 4 ′ Is a peeling mark of the upper bonding part, 5 and 6 are side bonding parts, 5a and 6a are strong bonding parts, 5 'and 6' are peeling marks of the side bonding parts, 7 is a non-bonding part, 8 is a storage part, 9 is a hole, 10 is a point joint, 11 is a content, 20 is a laminated film, 21 is a base material layer, 22 is an intermediate layer, and 23 is a heat-sealing layer.

  FIG. 1 is a plan view showing a first embodiment of a packaging bag according to the present invention, and FIG. 2 is a sectional view taken along line YY of FIG. The packaging bag A of the first embodiment is composed of a single laminated film 20 provided with a front side film 1, a folded portion 3 and a back side film 2 in this order, and the front side film 1 and the back side film 2 are folded at the folded portion 3. 1 is a three-side-sealed packaging bag having an upper joint portion 4, a side joint portion 5, and a side joint portion 6 on three sides except for the folded portion 3 in a state where the inner surfaces of 1 and the back film 2 are polymerized. As shown in FIG. 1, the packaging bag A is arranged such that the folded portion 3 and the upper joint portion 4 face each other vertically, and the side joint portion 5 and the side portion that connect the folded portion 3 and the upper joint portion 4 on the left and right. The joining part 6 is arranged to face each other.

  The upper joint portion 4 of the packaging bag A has a chevron shape that bulges outward (upward in FIG. 1), and the apex 4a is located substantially at the center, outward from the outer edge of the chevron-shaped upper joint portion 4 The front-side film 1 and the back-side film 2 are provided with non-joined non-joining portions 7. At the center of the non-joining part 7, an elongated hole 9 is provided between the upper edge of the non-joining part 7 and the apex 4 a of the upper joining part 4, and the hole 9 passes through the front film 1 and the back film 2. Is provided. The hole 9 is not essential but is provided if necessary. The shape of the hole 9 is also arbitrary, and a long hole is convenient for use as a handle. A downhole is preferred.

  The side joint 5 is provided by connecting the left skirt of the angle-shaped upper joint 4 and the left end of the folded portion 3, and the side joint 6 is formed between the right skirt and the folded portion 3 of the angle-shaped upper joint 4. The right end is connected. And the upper junction part 4 and the side part junction parts 5 and 6 are provided so that peeling is possible.

  Moreover, the lower part of the side part junction part 5 is provided with the strong adhesion part 5a connected with the folding | returning part 3, and the lower part of the side part junction part 6 is provided with the strong adhesion part 6a connected with the folding | returning part 3, and the strong adhesion part 5a. The peel strength of 6a is stronger than the peel strength of the side joints 5 and 6 excluding the strong adhesion portions 5a and 6a and the peel strength of the upper joint 4. The upper bonding part 4, the side bonding parts 5 and 6, and the strong bonding parts 5a and 6a are provided by thermal bonding, and the strong bonding parts 5a and 6a are provided with a stronger peeling strength than the other bonding parts. For example, the thermal bonding is performed by increasing the temperature for thermal bonding.

  Specifically, the strong bonding portions 5a and 6a are first thermally bonded when the side bonding portions 5 and 6 are formed, and further higher than the first thermal bonding temperature. Then, the second thermal bonding is performed by applying a point seal. The strongly bonded portions 5a and 6a are thermally bonded twice, so that a stronger peel strength than the peel strength of the upper joint portion 4 and the side joint portions 5 and 6 can be obtained. The strong adhesive portions 5a and 6a having a high peel strength have an effect of stopping the opening operation described later due to the difference in the peel strength when the upper joint portion 4 and the side joint portions 5 and 6 are peeled off. And since the bottom part can be formed in the center part of packaging bag A '(refer FIG. 4) opened by opening operation, it is more preferable to provide the strong adhesion parts 5a and 6a.

  As shown in FIG. 2, the non-joining part 7 is non-joining, and the non-joining part 7 becomes a knob during the unsealing operation, and peeling and opening are facilitated. In addition, as shown in FIG. 1, the space surrounded by the folded portion 3, the upper joint portion 4, and the side joint portions 5 and 6 including the strong adhesion portions 5 a and 6 a is accommodated in the accommodation portion 8. The non-joining part 7 and the accommodating part 8 are partitioned by the upper joining part 4. 1 and 2, the housing portion 8 is shown in a state where the periphery is sealed. However, the housing portion 8 is not joined to any of the upper joint portion 4, the side joint portion 5, or the side portion joint portion 6. After the contents are filled into the accommodating portion 8 from the openings, the openings are joined.

  The packaging bag A may be filled with the contents after being made with an existing bag making machine, or may be filled with the contents in-line by making a bag with a filling machine while rewinding the winding.

  A laminated film 20 is used for the front film 1 and the back film 2 constituting the packaging bag A. FIG. 3 shows a configuration example of the laminated film 20. As shown in FIG. 3, the laminated film 20 preferably has a configuration in which a base material layer 21, an intermediate layer 22, and a heat sealing layer 23 are laminated. Moreover, it can be simplified into two layers of the base material layer 21 or the intermediate layer 22 and the heat fusion layer 23 depending on the performance and quality required for the packaging bag A, the base material layer 21 or the intermediate layer 22, or The base material layer 21 and the intermediate layer 22 may be multi-layered.

  As the base material layer 21 constituting the laminated film 20, since it becomes a basic material constituting the packaging bag A, a synthetic resin film having excellent properties in mechanical, physical, chemical and the like can be used. Polypropylene, polyethylene terephthalate, nylon, polyacrylonitrile, polyvinylidene chloride, polyvinyl alcohol, ethylene / vinyl alcohol copolymer films, cellophane, and starting materials such as polylactic acid-based biaxially stretched films Can do. Alternatively, a film having a barrier layer formed by applying a barrier resin composition such as polyvinylidene chloride or polyvinyl alcohol to the above film, or aluminum, aluminum oxide, silicon oxide, indium oxide, tin oxide, zirconium oxide, etc. The thing which vapor-deposited the inorganic substance and provided the vapor deposition layer can be used. As these films, usually, the base material layer 21 is often printed, and printability is required. Therefore, a film stretched in a uniaxial direction or a biaxial direction is preferable. In addition, the thickness of the film constituting the base material layer 21 may be a thickness that can be held to the minimum necessary for strength, rigidity, etc. as a basic material, and may be determined in consideration of the cost, Usually, it is about 9-50 micrometers.

  The intermediate layer 22 is provided when rigidity, light shielding property or gas barrier property is required by packaging conditions, transportation conditions, contents protection function conditions, and the film used for the base material layer 21 described above. A film provided with the above-described barrier layer or vapor deposition layer, metal foil such as aluminum, iron, copper, and tin can be used. Moreover, what laminated | stacked combining these films etc. 1 or more types may be used. The thickness of the intermediate layer 22 is about 9 to 50 μm.

  As the heat-fusible layer 23, a layer formed from a heat-adhesive resin that can be melted by heat and fused to each other is preferable, and may be appropriately selected and used depending on the required quality for the packaging bag. Density polyethylene, medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene, polypropylene, ethylene-α olefin copolymer, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ionomer, ethylene -It can form using resin, such as an acrylic acid copolymer, an ethylene-methacrylic acid copolymer, an ethylene-acrylic acid ester copolymer, an ethylene-methacrylic acid ester copolymer. Moreover, resin which is easy to peel can be used. As a resin that can be easily peeled off, an easily peeling mechanism is, for example, a heat-sealing layer 23 formed by changing the mixing ratio of vinyl acetate in an ethylene-vinyl acetate copolymer resin. After the adhesion, the interface peeling type that peels off at the thermally bonded interface, or the core layer and the heat fusion layer are co-extruded into two or three layers to reduce the adhesive strength between the core layer and the heat fusion layer. In addition, after heat-bonding the heat-sealable layers, delamination type, random polypropylene, polyethylene, polystyrene, etc., which are made to peel from the core layer and heat-sealable layer when opening, were mixed at a predetermined ratio. Any of cohesive peeling type may be used.

  As a method of laminating the base material layer 21, the intermediate layer 22, and the heat sealing layer 23, for example, a dry lamination method of laminating using a dry laminating adhesive such as urethane, or a polyethylene resin or the like is hot melt extruded. Extrusion lamination method can be used.

  Next, with reference to FIG. 1 and FIG. 4, the opening operation, action and effect of the packaging bag A of the present invention will be described. FIG. 4 is an explanatory view showing a state in which the packaging body containing the contents 11 is opened in the packaging bag A of the first embodiment according to the present invention, and the opening operation of the packaging bag A is a peeling opening. And When the package 11 in which the contents 11 are stored in the packaging bag A is picked by the front film 1 and the back film 2 of the non-joining part 7 and pulled in opposite directions, peeling starts from the apex 4a of the upper joining part 4. When the peeling of the upper joint portion 4 is finished, the peeling progresses to the side joint portions 5 and 6, and when the peeling reaches the strong adhesion portions 5a and 6a, the peeling strength is increased. The opened packaging bag A ′ has a dish shape and is exposed in a state in which the contents 11 are stacked thereon, and the peeling trace 4 ′ at the upper joint and the peeling trace 5 ′ at the side joint are shown. , 6 ′ are formed. The folded-back portion 3 becomes the bottom of the dish-shaped container, and can be formed into a deep dish shape by not peeling off the portions of the strong adhesion portions 5a and 6a, which is a container suitable for eating by a large number of people. Therefore, there is no need to prepare a container or the like, and there is no need to transfer the contents 11 to the container, which provides convenience to the user. Further, after the meal, the opened packaging bag A 'can be folded, so that the volume of waste can be reduced. Moreover, the peeling opening of the packaging bag A becomes easy by making the upper junction part 4 into a mountain shape.

  FIG. 5 is a plan view showing a second embodiment of the packaging bag according to the present invention. As shown in FIG. 5, the packaging bag B of 2nd embodiment is the structure by which the point junction part 10 which can peel the front side film 1 and the back side film 2 in the both corners of the upper end edge of the non-joining part 7 was provided. By providing the point bonding part 10, it is possible to prevent the separated front film 1 and back film 2 in the non-bonding part 7 from being caught in handling. Further, the side joints 5 and 6 can be extended upward to prevent the non-joint part 7 from being caught. In this case, the length extending upward exceeds the vertex 4a of the upper joint 4. It is better to keep the length not. When the vertex 4a is exceeded, it becomes difficult to peel open. Others are the same as those in the first embodiment, and the same reference numerals are given and description thereof is omitted.

  As described above, since the packaging bags A and B of the present invention can contain the contents 11 such as confectionery in a rose state without using a tray, it is not necessary to separate them into trays for disposal, When the upper joint portion 4 has a chevron shape, excellent openability is obtained, and when the food is eaten by making the joint portion easy to peel in a three-sided seal form, the peeled and opened packaging bag becomes a dish-shaped container. Can be used as a container. Further, since the packaging bags A and B are not provided with cuts or notches such as notches, there is no possibility that the packaging bags will be damaged due to catches or cuts in the transportation and handling of goods.

A, B Packaging bag A 'Opened packaging bag 1 Front side film 2 Back side film 3 Folded part 4 Upper joint part 4a Vertex 4' Detachment mark of upper joint part 5, 6 Side joint part 5a, 6a Strong adhesion part 5 ' , 6 'side part joint peeling trace 7 non-joined part 8 accommodating part 9 hole part 10 point joined part 11 contents 20 laminated film 21 base material layer 22 intermediate layer 23 heat fusion layer

Claims (4)

In the state where the front side film, the folded portion, and the back side film are sequentially laminated, and the front side film and the back side film are polymerized through the folded portion, the folded portion and the upper joint portion are vertically arranged. A packaging bag provided with joints on three sides arranged opposite to each other, and side joints connecting the folded part and the upper joint on the left and right,
The upper joint portion has a mountain shape that bulges outward,
The front-side film and the back-side film are provided with non-joined non-joined portions outward from the outer edge of the upper joint portion,
The packaging bag, wherein the upper joint part and the side joint part are peelable. A strong adhesive portion connected to the folded portion at the lower portion of the side joint portion,
The packaging bag according to claim 1, wherein the strong bonding portion is stronger than the peel strength of the side bonding portion and the upper bonding portion excluding the strong bonding portion. The packaging bag according to claim 1, wherein the non-joining portion includes a hole portion that penetrates the front film and the back film. The packaging bag according to any one of claims 1 to 3, wherein point joining portions are provided at both corners of the upper edge of the non-joining portion so that the front film and the back film can be peeled off. .

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