JP2016210485A - Composite container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composite container which can secure self-standing properties of a flexible packaging bag, and at the same time, which can hold a shape and an open state of the flexible packaging bag, and which has a closing mechanism.SOLUTION: A composite container is constituted by a flexible packaging bag and a carton for covering it. The flexible packaging bag is constituted by a plastic film or a laminate whose base material is the plastic film. The carton is constituted with paper being a base material and has a rectangle opening at the upper part of a trunk. At the opening of the carton, a flap with a hole is provided, and on the side opposing to the flap, another flap is provided. By inserting another flap into the hole provided at the flap, the carton is closed. From the hole, the upper part of the flexible packaging bag sticks out and is exposed to the outside. One part of the flexible packaging bag and one part of the carton for covering it are adhered to each other in the vicinity of the opening.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a composite container. In particular, the present invention relates to a composite container in which a flexible packaging bag and a carton are combined.

  Conventionally, a packaging material using a plastic film or a laminate made of a plastic film as a base material is also called a pouch or a flexible packaging bag, and is widely used for foods, daily necessities, and industrial use.

  Flexible packaging bags have the original functions of packaging materials, which enhance the protection and preservation of contents, and can be stored and transported in a lying position, and are inexpensive. Have.

  In addition, for the purpose of enhancing the convenience in use, a device for making a soft packaging bag stand by itself has been devised, and various forms such as a square bottom soft packaging bag and a standing pouch have been commercialized.

  On the other hand, a carton, which is a packaging material using a paper base material, is easy to maintain its shape in addition to cost merit, and has superiority in self-supporting and maintaining an open state, which is also widely used. ing. In addition, as proposed in the patent literature, a self-supporting container having a flexible packaging bag in a carton is also proposed as a composite container.

  However, in the contents proposed in the patent literature, there are problems such as poor retention of the open state, a basic function as a packaging material in the carton part, and a lack of a closing mechanism. Convenience was poor and customer satisfaction was not achieved. This is because, in taking out the contents from the flexible packaging bag, maintaining the shape and maintaining the open state are important mechanisms.

  In addition, there are also bag-in cartons and bag-in-boxes that are used by storing flexible packaging bags in cartons, but in addition to poor appearance, they can be expensive. Inevitable use has been limited.

Japanese Patent Application Laid-Open No. 11-236054

  The present invention has been made in view of such a situation, and an attempt is made to provide a composite container having a closing mechanism capable of maintaining the shape of the flexible packaging bag and maintaining the opened state while ensuring the self-supporting property of the flexible packaging bag. To do.

As means for solving the above-mentioned problems, the invention according to claim 1 is a composite container comprising a flexible packaging bag and a carton covering the flexible packaging bag, and the flexible packaging bag is made of a plastic film or a plastic film as a base material. The carton is made of paper as a base material, has a rectangular opening at the top of the body, and has a flap with a hole at the opening of the carton, On the side facing the flap, another flap is provided, and the carton is closed by inserting the other flap into the hole provided in the flap. From the hole, the flexible packaging bag is provided. The soft packaging bag and the carton covering it are partly bonded to each other in the vicinity of the opening.

  The invention according to claim 2 is the composite container according to claim 1, wherein the hole is a slit.

  The invention according to claim 3 is the composite container according to claim 1 or 2, wherein a crease line for closing the carton is provided in the body of the carton.

  According to a fourth aspect of the present invention, the carton is opened by separating a lead ruled line provided at a boundary between a flap having a hole and a trunk of the carton. Item 4. The composite container according to Item 3.

  ADVANTAGE OF THE INVENTION According to this invention, the composite container which can hold | maintain the shape of a flexible packaging bag and the opening | maintenance state of a flexible packaging bag, and has a closing mechanism of a carton can be provided while ensuring the self-supporting property of a flexible packaging bag.

  According to the second aspect of the present invention, there is provided a composite container capable of maintaining the shape of the flexible packaging bag and maintaining the opened state while ensuring the self-supporting property of the flexible packaging bag and having a carton closing mechanism. be able to.

  According to the invention described in claim 3, the self-supporting property of the flexible packaging bag can be secured, the shape of the flexible packaging bag can be maintained and the opened state can be maintained, and the carton can be more easily closed. A composite container can be provided.

  According to the invention described in claim 4, while ensuring the self-supporting property of the flexible packaging bag, it is possible to maintain the shape and open state of the flexible packaging bag and to have a carton closing mechanism, which makes it easier. A composite container capable of opening a carton can be provided.

FIG. 1 is a plan development view of one embodiment of a carton in a composite container according to the present invention. FIG. 2 is a schematic perspective view for explaining the first stage of the sealing method in one embodiment of the composite container according to the present invention. FIG. 3 is a schematic perspective view for explaining the second stage of the sealing method in one embodiment of the composite container according to the present invention. FIG. 4 is a schematic perspective view for explaining a state where the sealing is completed in one embodiment of the composite container according to the present invention. FIG. 5 is a schematic perspective view for explaining an opened state of one embodiment of the composite container according to the present invention.

  Hereinafter, a detailed description will be given with respect to embodiments for carrying out the present invention with reference to FIGS. However, the present invention is not limited only to these examples.

FIG. 1 is a plan development view of an embodiment of a carton among the composite containers according to the present invention. The carton (10) is made of paper and consists of a bottom part (20) and a body part (30), and the upper part of the carton has a structure that can be sealed by a sealing mechanism (40). Yes.

  The body part (30) of the carton (10) can be formed into a cylindrical body part having a rectangular cross section by gluing the glue flap (8) to the body part (30). (20) can form a plane by fitting the bottom flaps (13) together. A bottom part (20) may be comprised only by fitting of a bottom part flap (13), and may be comprised using a glue.

  In this way, the carton (10) covers the bottom (20) and the trunk (30) of the soft packaging bag, thereby supporting the soft packaging bag and allowing it to stand on its own and keep its shape.

  The body part (30) is provided with a crease line (4) used for sealing the upper part of the carton (10), and the body part (30) is pushed inward along the crease line (4) to form a carton. The opening of (10) can be closed, and the carton top can be sealed and fixed by the carton top sealing mechanism (40). In addition, the carton can be folded compactly after assembling by putting crease lines, which is convenient when storing the carton.

  The sealing mechanism (40) is composed of a flap (1) having a hole at the top of the carton, another flap (3) on the opposite side, and a hole (2) provided in the flap. In sealing, the side with the flap (1) having a hole and the opposite side with the other flap (3) are brought into contact with each other by pushing the crease line (4) inward.

  Further, sealing is performed by inserting another flap (3) on the opposite side into the hole (2) provided in the flap. The hole (2) provided in the flap (1) having a hole may be in the shape of a slit.

  At this time, a soft wrapping bag is stored inside the carton, and the upper part of the soft wrapping bag is exposed from the outside while being exposed to the outside of the carton, and is sealed in a state that can be pinched by hand. The By this, it can be visually confirmed from the outside that the contents are stored in the flexible packaging bag, and it is also a structure that is self-supporting by a carton and that protects the body part from the outside. Can be seen.

  When opening, the lead ruled line (5) provided at the boundary between the flap (1) having a hole and the body (30) can be cut and opened. By cutting the lead ruled line (5), the closure of the upper part of the carton is released, and the upper part of the carton (10) can be made a rectangular opening again by the resilience of the paper.

  Subsequently, the state in which the carton according to the present invention is partially covered and sealed by the bottom portion and the trunk portion of the flexible packaging bag will be described. FIG. 2 is a schematic perspective view for explaining a sealing method of one embodiment of the composite container according to the present invention.

  The flexible packaging bag (11) is composed of a plastic film or a laminate having a plastic film as a base material. In order to process a plastic film or a laminate using a plastic film as a base material into a bag, for example, a sealant layer can be provided on the inner surface of the bag and the bag can be processed by heat sealing.

The flexible packaging bag (11) is in the carton (10), and the opening of the carton (10) is sealed with the upper part (6) of the flexible packaging bag protruding outward from the upper part of the carton. . When sealing, flap (1) with a hole and another flap (3
) Are brought close to each other and brought into contact with each other via the upper part (6) of the soft packaging bag to close the container. Can be blocked.

  At this time, the contents are stored inside the soft packaging bag (11), but the contents are located in the lower part of the soft packaging bag (11). The upper part (6) is in a state in which no contents are contained, and is in a flat state.

  Further, the shape of the flexible packaging bag (11) is not particularly limited, but the portion covered with the carton (10) of the flexible packaging bag (11) is in a state where the contents are contained, for example, a carton. (10) can be shaped to match the shape when closed, and may be shaped such that the body or bottom has gussets.

  Subsequently, the flap (1) having the hole is folded back in the direction of the arrow (9), passed through the hole (2) provided in the flap of the flap (1) having the hole, and the upper part (6 ) Jumps out of the carton and exposes. At the same time, in the upper part of the carton, the upper part (6) of the flexible packaging bag faces the outside and is covered with the flap (1) having holes except for the protruding part.

  FIG. 3 is a schematic perspective view for explaining the second stage of the sealing method in one embodiment of the composite container according to the present invention.

  In the state shown in FIG. 3, the flap (1) having a hole is folded back in the direction of the arrow (9), and the upper part (6) of the flexible packaging bag and another flap (3) on the opposite side. Is in a state of being inserted into the hole (2) provided in the flap, and is exposed to the outside of the carton (10).

  Furthermore, the other flap (3) on the side facing the flap (1) having a hole can be folded back in the direction of the arrow (12) to fix the blockage of the carton (10). Thereby, the sealed state of the upper part of the carton (10) can be maintained.

  The shape of the other flap (3) on the opposite side and the hole (2) provided in the flap is not particularly limited, but the other flap (3) on the opposite side is provided in the flap. After being inserted into the hole (2), the same size or slightly larger than the hole (2) provided in the flap is effective to fix the closed state so that it does not easily return. Therefore, it is preferable.

  Alternatively, the closed state is fixed by making the shape of the other flap (3) on the opposite side constricted at the base of the flap so that it cannot be reversed after being inserted into the hole (2). It may be a mechanism.

  FIG. 4 is a schematic perspective view for explaining a state where the sealing is completed in one embodiment of the composite container according to the present invention.

  The flexible packaging bag (11) is in the carton (10), and the upper part of the carton (10) is sealed with the upper part (6) of the flexible packaging bag exposed from the upper part of the carton. Another flap (3) on the opposite side is inserted into the hole (2) provided in the flap of the flap (1) having a hole, and is in a fitted state. State is fixed and maintained.

  Further, while the flexible packaging bag (11) is difficult to maintain its shape due to its material, according to the present invention, the carton (10) has the bottom (20) and the trunk (30) of the flexible packaging bag. Since it covers a part of the surface, it can stand on its own and can retain its shape.

  The upper part (6) of the flexible packaging bag is exposed to the outside of the carton from the hole (2) provided in the flap of the flap (1) having a hole. In this state, the carton (10) can be held and held by hand, and the upper part (6) of the flexible packaging bag can be held and held. Moreover, when printing etc. are given to the upper part (6) of a flexible packaging bag, visual confirmation from the outside is also possible.

  In a state where the carton (11) of the composite container (50) is sealed, the lead ruled line (5) is located on both sides of the upper part (6) of the flexible packaging bag that is exposed by protruding from the carton. Since the lead ruled line (5) is composed of a ruled line and intermittent through holes, the lead ruled line (5) is easy to bend and can be easily separated. And can be easily separated at the time of opening.

  FIG. 5 is a schematic perspective view for explaining an opened state of one embodiment of the composite container according to the present invention.

  The carton (10) is opened by separating the lead ruled line (5) provided at the boundary between the flap (1) having a hole and the trunk (30) at the top of the carton. Since the lead ruled line (5) is composed of a ruled line and an intermittent through-hole, the lead ruled line (5) can be easily separated using a hand or a finger.

  The flexible packaging bag (11) is opened by tearing the upper portion (6) of the flexible packaging bag separately from the carton (10), but it may be opened by tearing by hand by providing an easy opening mechanism. A method of opening with an instrument is also acceptable.

  In the carton (10), the crease line (4) returns to its original state due to the rebound resilience of the paper, so that the opening becomes a rectangle or a shape close to a rectangle. By adhering a part of the flexible packaging bag (11) to the vicinity of the carton opening, the flexible packaging bag (11) follows the opening of the carton to form the opening (7) of the flexible packaging bag, It is possible to maintain a large open state. In taking out the contents, it is a preferable state that the open state of the flexible packaging bag (11) is maintained.

  The material which comprises a flexible packaging bag (11) consists of a laminated body which used a plastic film or a plastic film as a base material. The material structure of the plastic film or the laminate constituting the flexible packaging bag (11) is not necessarily limited. If the sealant layer is provided at least in the innermost layer in addition to the base film, the flexible packaging bag can be made. Is possible. In addition, the material and layer structure of the laminate may be designed according to the contents and the properties and purpose of the product.

  For bag making, a sealant layer is provided on at least the inner surface of the laminate. As a material for the sealant layer, a polyolefin resin is generally used among thermoplastic resins. Specifically, a low density polyethylene resin (LDPE), a medium density polyethylene resin (MDPE), and a linear low density polyethylene resin. (LLDPE), ethylene-vinyl acetate copolymer (EVA), ethylene-α olefin copolymer, ethylene-methacrylic acid resin copolymer and other ethylene resins, polyethylene and polybutene blend resins, and homopolypropylene resins Polypropylene resins such as (PP), propylene-ethylene random copolymer, propylene-ethylene block copolymer, and propylene-α olefin copolymer can be used.

  If necessary, you can improve the image of the product and print necessary information about the contents. For the base film for that purpose, a plastic film made of a polymer material can be used. The polymer film is a film made of a polymer resin composition, and includes polyolefin (polyethylene, polypropylene, etc.), polyester (polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, etc.), polyamide (nylon-6, nylon-66, etc.), polyimide Etc. can be used, and is appropriately selected according to the application. In particular, when polypropylene or polyethylene terephthalate is used as a base film, it is more preferable in terms of film strength and price.

  Further, for the purpose of improving the storage stability of the contents, an opaque layer for shielding ultraviolet rays such as a colored film can be provided in the laminate. Alternatively, a gas barrier layer can be provided in the laminate.

  As the gas barrier layer, a metal foil such as an aluminum foil, a film obtained by vapor-depositing aluminum on a film, or the like can be added to the constituent elements of the laminate.

  Assuming that microwave heating by a microwave oven is performed on the gas barrier layer, a metal foil such as an aluminum foil cannot be used. Therefore, a gas barrier film may be attached to form a laminate. The gas barrier film can be laminated using an adhesive, for example, using a dry lamination method, or can be laminated by extruding a thermoplastic resin using an extruder.

  In the case of a gas barrier film, the gas barrier layer can be composed of a vapor deposition layer and a coating layer of an inorganic compound. After providing an anchor coat on the base film, the vapor deposition layer and the coating layer are sequentially provided. Alternatively, a gas barrier film having a gas barrier layer may be bonded to the base film.

  For example, urethane acrylate can be used for the anchor coat layer of the gas barrier film. The coating thickness is preferably in the range of 50 to 65 nm. For the formation of the anchor coat layer, a coating method using a printing technique such as gravure coating with a paint in which a resin is dissolved in a solvent can be used, and a coating film can be formed using a generally known coating method.

  As a method of forming a vapor deposition layer, an inorganic compound such as SiO or AlO is coated on a base film provided with an anchor coat layer using a vacuum vapor deposition method, and an inorganic compound layer is formed by a vacuum vapor deposition method. it can. The thickness of the vapor deposition layer is preferably 15 nm to 30 nm.

  As a method for forming the coating layer, an aqueous solution or water / alcohol containing at least one of a water-soluble polymer and (a) one or more alkoxides or hydrolysates thereof, or (b) tin chloride. A coating agent mainly composed of a mixed aqueous solution is applied onto a film and dried by heating to form an inorganic compound layer by a coating method to form a coating layer. At this time, the adhesion with the anchor coat layer can be improved by adding a silane monomer to the coating agent.

  An inorganic compound layer has a gas barrier property only by a coating film formed by a vacuum deposition method, but a coating layer, which is an inorganic compound layer formed by a coating method, is formed so as to overlap with a deposited layer that is an inorganic compound layer formed by a vacuum deposition method. be able to.

  By combining these two layers, a reaction layer of both layers is formed at the interface between the inorganic compound layer by the vacuum deposition method and the inorganic compound layer by the coating method, or the inorganic compound layer by the coating method becomes an inorganic compound layer by the vacuum deposition method. A dense structure is formed by filling and reinforcing defects such as pinholes, cracks, and grain boundaries, or by reinforcing them, so that high gas barrier properties, moisture resistance, and water resistance are achieved, and flexibility that can withstand deformation is achieved. Therefore, it can also be suitable as a packaging material.

  In addition, when SiO is used as the barrier layer, it is transparent, so that the contents can be seen from the outside of the flexible packaging bag. These may be properly used depending on the application and required quality.

  Of the plastic film or laminate constituting the flexible packaging bag, printing can be applied to the layer visible from the outside of the flexible packaging bag. Printing can display information and logo marks related to the contents, and can effectively display images and usage of the contents using characters and images.

  Although there are no particular restrictions on the printing method and printing ink, it is appropriate as long as the printability to film, design properties such as color tone, adhesiveness, and safety as a food container are considered among known printing methods. For example, a gravure printing method, an offset printing method, a gravure offset printing method, a flexographic printing method, or the like can be used. Of these, the gravure printing method can be preferably used.

  The material that makes up the carton (10) is based on paper, but it does not impose any special restrictions, and has the appropriate strength and suitability when the required quality varies depending on the contents. It can be appropriately selected from those used.

  Further, since the constituent material of the carton (10) is paper, the rigidity of the carton (10) is effective in protecting the contents of the flexible packaging bag (11). These are highly convenient and suitable for selling products using the composite container according to the present invention in stores and the like.

  Also, for example, when corrugated cardboard is used as the material of the carton (10), it is possible to realize a composite container that is excellent in heat retention and heat insulation in addition to self-supporting property, shape retention property, retention in an opened state, and a closing mechanism it can.

  In addition to the flexible packaging bag, printing can be provided outside the carton. Although there are no particular restrictions on the printing method and printing ink, known printing methods, printability from materials to paper substrates, design properties such as color tone, adhesion, and food containers when necessary Can be selected as appropriate in consideration of safety and the like. For example, a gravure printing method, an offset printing method, a gravure offset printing method, a flexographic printing method, or the like can be used.

  As described above, according to the present invention, it is possible to provide a carton that can ensure the self-supporting property of the flexible packaging bag, and at the same time can maintain the shape and open state of the flexible packaging bag and has a closing mechanism.

DESCRIPTION OF SYMBOLS 1 ... Flaps which have a hole 2 ... Hole 3 ... Another flap 4 ... Fold ruled line 5 ... Lead ruled line 6 ... Upper part of a flexible packaging bag 7 ... Soft packaging bag Opening 8 ... Glue flap 9 ... Arrow 10 ... Carton 11 ... Flexible packaging bag 12 ... Arrow 13 ... Bottom flap 20 ... Bottom 30 ... Body 40 ...・ Sealing mechanism 50 ... Composite container

Claims (4)

A composite container composed of a flexible packaging bag and a carton covering it,
The flexible packaging bag is composed of a plastic film or a laminate based on a plastic film,
The carton is composed of paper as a base material, and has a rectangular opening at the top of the body,
There is a flap with a hole in the opening of the carton,
On the side facing the flap, another flap is provided,
The carton is closed by inserting another flap into the hole provided in the flap,
From the hole, the upper part of the flexible packaging bag protrudes and is exposed to the outside,
A composite container characterized in that a flexible packaging bag and a carton covering it are partially bonded to each other in the vicinity of the opening.   The composite container according to claim 1, wherein the hole is a slit.   The composite container according to claim 1 or 2, wherein a crease line for closing the carton is provided on the body of the carton.   The composite container according to any one of claims 1 to 3, wherein the carton is opened by separating a lead ruled line provided at a boundary between a flap having a hole and a barrel part of the carton.