JP5772080B2 - Composite package - Google Patents

Description

  The present invention relates to a composite package for packaging a liquid or gel fluid.

  In general, when a liquid or gel-like fluid is sealed with a packaging bag, a laminated film in which a heat-adhesive resin layer is laminated on the inner surface side is used. The laminated film joins the thermoadhesive resin layers facing each other at the edge portion to form a storage portion. After filling the storage part with the contents, the filling port is sealed to seal the contents. Further, an opening notch (notch) is formed in advance in the seal portion at the edge of the packaging bag. Thereby, the contents can be taken out by tearing the laminated film from the notch for opening.

  In such a packaging form, after one end of the packaging bag is opened by opening, outside air enters the inside of the packaging bag. For this reason, when liquid seasonings, such as soy sauce, were enclosed in a packaging bag, the content deteriorated by the oxidation of the contents after opening. Patent Document 1 discloses a packaging bag in which a check valve is provided at an outlet. Thereby, a check valve prevents intrusion of outside air, and the freshness of the contents can be maintained even after the packaging bag is opened.

JP 2010-159087 A

  However, according to the packaging bag of Patent Document 1, a check valve nozzle made of two overlapping plastic films is provided inside the packaging bag. The vicinity of the outlet has a double structure consisting of a packaging bag and a check valve nozzle. For this reason, there has been a problem that the structure becomes complicated and the manufacturing cost increases. In addition, when sealing a content having a certain viscosity, such as paint, with a large volume, there is a possibility that the intrusion of outside air cannot be suppressed with only two plastic films and the content cannot be poured out smoothly.

  An object of this invention is to provide the composite package which prevents the external air penetration | invasion to the inside after opening, reducing a manufacturing cost in view of the said problem.

  In order to achieve the above object, the present invention provides a storage unit that encloses a content by joining an edge with a soft laminate including at least a base material layer and a heat-adhesive resin layer as an innermost layer facing each other. And a packaging bag having a nozzle connected to the storage portion and protruding outward, and a self-supporting exterior carton that stores and holds the packaging bag, wherein the nozzle is disposed on the exterior. The nozzle is sandwiched between a pair of flaps that project outward from an opening provided in the upper part of the carton, are connected to the periphery of the opening, and are bent inward of the opening. The holding part which protrudes upward from an edge part and the said exterior carton upper part are fixed.

  Further, the present invention is characterized in that, in the composite package having the above-mentioned configuration, the inner diameter of the storage portion decreases as it approaches the connecting portion with the nozzle.

  In the composite package of the above-described configuration, the edge of the storage portion has a pair of side edges, a hypotenuse is formed from a pair of the side tops to the connecting portion, and the width of the hypotenuse is the width of the hypotenuse It is characterized by becoming smaller as it approaches the connecting part.

  Moreover, the present invention is characterized in that, in the composite package having the above-described configuration, the intersection of the upper side edge and the oblique side is sealed in an arc shape.

  In the composite package of the above configuration, the edge portion of the storage portion has a pair of side edges and a bottom edge, and the corner portion where the lower edge of the side edge intersects the bottom edge is sealed obliquely. It is said.

  In the composite package of the above configuration, the edge of the storage portion has a pair of side edges and a bottom edge, and a corner portion where the bottom edge of the side edge intersects the bottom edge is sealed in an arc shape. It is a feature.

  According to the present invention, in the composite package having the above-described configuration, a crease is provided in a substantially horizontal direction of the exterior carton.

  According to the present invention, in the composite package having the above-described configuration, an opening window that exposes the packaging bag is provided in the exterior carton.

  According to the 1st structure of this invention, the laminated body which opposes adheres by the surface tension of the content adhering to the nozzle inner surface by forming a packaging bag by making a soft laminated body face each other. Thereby, the flow path of a nozzle is obstruct | occluded and it can prevent that external air penetrate | invades into a storage part. Moreover, since the flap provided in the exterior carton sandwiches the nozzle of the packaging bag, the opposing laminates adhere more stably at the sandwiched portion of the flap. Therefore, a sufficient check valve function can be provided without providing a separate check valve in the packaging bag. Thereby, the structure of a packaging bag can be simplified and the manufacturing cost of the whole composite package can be reduced. Further, by providing the outer carton with self-supporting properties, a soft packaging bag that does not stand on its own can be self-supported together with the outer carton. In addition, the packaging bag can be protected from external impact by storing and holding the flexible packaging bag in the outer carton. The nozzle of the packaging bag protrudes outside from the opening provided in the exterior carton, and the contents can be easily poured out from the nozzle. At this time, the holding portions protruding upward from the edge of the storage portion on both sides of the nozzle are fixed to the upper end of the outer carton, whereby both sides of the nozzle are fixed and the nozzle flow path is stably secured. Therefore, it is possible to prevent the flow path leading from the storage portion to the nozzle from being blocked by the wrinkles or bending of the packaging bag. Moreover, even when a highly viscous content is stored, the content can be smoothly poured out.

  According to the second configuration of the present invention, in the composite package of the first configuration described above, the inner diameter of the storage portion decreases as it approaches the connecting portion with the nozzle, so that the contents are smoothly guided from the storage portion to the nozzle. be able to.

  According to the third configuration of the present invention, in the composite package body of the second configuration, the edge of the storage portion has a pair of side edges, and a hypotenuse is formed from the upper end of the pair of side sides to the lower end of the nozzle. Therefore, the contents are guided from the storage unit to the nozzle along the hypotenuse. At this time, since the width of the hypotenuse becomes smaller as it approaches the lower end of the nozzle, both hypotenuses function as a funnel. Therefore, the contents can be quickly guided toward the nozzle in an inverted state with the nozzle tip directed downward, and the contents can be poured out smoothly.

  Moreover, according to the 4th structure of this invention, in the composite package body of the said 3rd structure, by sealing the cross | intersection part of a side edge upper end and a hypotenuse in circular arc shape, a content is carried out from a storage part to a nozzle. It can guide more smoothly.

  Moreover, according to the 5th structure of this invention, in the composite package body in any one of the said 1st structure-4th structure, the edge part of a storage part has a pair of side and base, It is possible to prevent the contents from remaining in the lower portions on both sides of the storage bag by sealing the corner where the bottom and the base intersect diagonally.

  Moreover, according to the 6th structure of this invention, in the composite package body in any one of the said 1st structure-4th structure, the edge part of a storage part has a pair of side and base, It is possible to prevent the contents from remaining on the lower portions on both sides of the storage bag by sealing the corner where the base and the base intersect with each other in an arc shape.

  According to the seventh configuration of the present invention, in the composite package of any one of the first configuration to the sixth configuration, the crease is provided in the substantially horizontal direction of the exterior carton, thereby being along the crease. The outer carton is easily bent. Thereby, when the contents are pushed out from the top of the outer carton with the packaging bag interposed therebetween, the contents can be easily extruded.

  Moreover, according to the 8th structure of this invention, in the composite packaging bag in any one of the said 1st structure-the 7th structure, a user provides an opening carton which exposes a packaging bag in an exterior carton, The remaining amount of contents can be confirmed from the opening window. In addition, the contents can be pushed out by pushing the packaging bag with a finger through the opening window.

It is a perspective view of the composite package body which concerns on embodiment of this invention. It is the elements on larger scale near the nozzle in the composite package which concerns on embodiment of this invention. It is a top view of the packaging bag which comprises the composite package body which concerns on embodiment of this invention. It is an expanded view of the exterior carton which comprises the composite package body which concerns on embodiment of this invention. It is sectional drawing which shows the layer structure of the packaging bag used for the composite package body which concerns on embodiment of this invention.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. 1 is a perspective view of a composite package according to an embodiment of the present invention, FIG. 2 is an enlarged view of the vicinity of a nozzle in the composite package according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. It is a top view of the packaging bag which comprises the composite package body which concerns.

  The composite package 10 is configured by storing and holding a flexible packaging bag 20 in an outer carton 30. The exterior carton 30 includes a front plate 102, a rear plate 101, side plates 107 and 108, and an auto bottom type bottom plate (see FIG. 4). An opening 37 is provided at the upper edge of the outer carton 30, and a pair of opposed flaps 31 a and 31 b are connected to the periphery of the opening 37. The pair of flaps 31a and 31b are folded into the opening 37 along the creases. At this time, the exterior carton 30 is made of paperboard having a predetermined basis weight, and a restoring force that tries to return to the shape before folding is applied to the flaps 31a and 31b. Thereby, a force acts on the pair of flaps 31a and 31b in a direction in which the tips come into contact with each other. The flow path 29a of the nozzle 29 protruding outside from the opening 37 is sandwiched between flaps 31a and 31b.

  The packaging bag 20 is composed of a soft laminated film 60 (see FIG. 5) including a base material layer 61 and a thermal adhesive resin layer 63. The storage portion 28 for storing the contents is formed by heat-sealing the peripheral portion with a predetermined width with the heat-adhesive resin layer 63 of the laminated film 60 facing each other. The packaging bag 20 has a pair of side sides 23 and 24 and a bottom side 25 that intersects with the lower ends of the side sides 23 and 24. The upper ends of the side sides 23 and 24 intersect with the oblique sides 26 and 27, and the upper ends of the oblique sides 26 and 27 are connected to the nozzle 29 at the connecting portion 29c. The widths of the oblique sides 26 and 27 become smaller as the connecting portion 29 is approached. Thereby, in the inverted state of the packaging bag 20 with the nozzle 29 facing downward, the hypotenuses 26 and 27 serve as a funnel. At this time, the contents can be quickly guided from the storage portion 28 toward the nozzle 29.

  The hypotenuses 26 and 27 are provided with holding portions 26a and 27a projecting outward from the hypotenuses 26 and 27, respectively. Protrusions 26b and 27b are provided at the upper ends of the holding portions 26a and 27a. The holding portions 26a and 27a are fixed to the upper end of the outer carton 30 by the upper adhesive margin pieces 105a and 105b. Thereby, the packaging bag 20 is self-supporting in the exterior carton with both shoulders being lifted. Therefore, when the composite package 10 is tilted and the content is poured out from the nozzle 29, the position of the nozzle 29 is stabilized, and the content flows smoothly from the storage portion 28 to the nozzle 29. The holding portions 26a and 27a and the upper adhesive margin pieces 105a and 105b can be stably bonded by the protrusions 26b and 27b.

  Further, by fixing both sides of the connecting portion 29c with the holding portions 26a and 27a, the flow passage 29a of the nozzle 29 is held in an open state. Thereby, it can prevent that the flow path 29a is obstruct | occluded by the wrinkles and bending of the packaging bag 20. FIG. Moreover, even when a highly viscous content is stored, the content can be smoothly poured out.

  Corners where the lower ends of the side edges 23 and 24 and the bottom edge 25 intersect are obliquely heat-sealed. Thereby, it can prevent that the contents remain in the lower part of the both sides of the storage bag 20. The same effect can be obtained even if the corners are sealed in an arc shape. Moreover, it is preferable to heat-seal the cross | intersection part of each edge | side except the base 25 used as the filling port of the content in the seal | sticker part of the package 20 in circular arc shape. Thereby, the contents are smoothly guided to the nozzle 29.

  The outer peripheral edge of the nozzle 29 is heat-sealed to form a flow path 29 a that communicates with the storage portion 28. Notches 29b are provided as opening means on both upper sides of the nozzle 29. When the nozzle 29 is torn horizontally from the notch 29b, the flow path 29a is opened and the tip of the nozzle 29 is opened. Note that the inner diameter of the flow path 29a decreases as it approaches the tip of the nozzle 29. Thereby, the contents can be smoothly poured out from the tip of the nozzle 29. The opening means may be provided with a half cut line or a laser cut line in the opening direction in addition to the notch 29b.

  The heat seal width at the periphery of the packaging bag 20 is preferably 1.5 to 3.5 mm in order to ensure the sealing strength. However, the vicinity of the bottom 25 serving as a filling port for the contents and the notch 29 near the tip of the nozzle 29 is not limited to this. In order to prevent generation of wrinkles in the heat sealing process, it is preferable that the heat sealing region is heat-sealed with a predetermined width. For this reason, the unsealed area | region 20a is provided in the holding | maintenance part 26a, 27a and the side parts 23 and 24 lower part of the packaging bag 20. FIG. In order to prevent the heat seal portion from being broken, an unsealed region having a width of 2.0 to 5.0 mm may be provided on the outer periphery of the heat seal region.

  According to this embodiment, by forming the packaging bag 20 with the soft laminated film 60 facing each other, the opposing soft laminated film 60 is stabilized by the surface tension of the contents attached to the inner surface of the nozzle 29. Glue. Thereby, the flow path 29a of the nozzle 29 is blocked, and it is possible to prevent the outside air from entering the storage portion 28. Further, since the flaps 31 a and 31 b provided in the outer carton 30 sandwich the nozzle 29 of the packaging bag 20, the opposed laminated films 60 are more stably adhered to each other at the sandwiched portion of the nozzle 29.

  When the contents are poured out from the tip of the nozzle 20, the packaging bag 20 is pinched by hand from above the outer carton 30 while tilting the outer carton 30. As a result, the contents are pushed out in the direction of the flow path 29a, and the tips of the flaps 31a and 31b sandwiching the flow path 29a are pushed back outward against the restoring force. At this time, the flow path 29a is opened and the contents are poured out from the tip of the nozzle 29.

  Therefore, a sufficient check valve function can be provided without providing a separate check valve in the packaging bag 20. Thereby, the structure of the packaging bag 20 can be simplified and the manufacturing cost of the composite packaging body 10 whole can be reduced. The flaps 31a and 31b may be sandwiched so as to assist the adhesion of the opposing laminated film 60 at the sandwiched portion of the nozzle 29. Therefore, it is not necessary to completely block the flow path 29a of the nozzle 20 with the flaps 31a and 31b. If the clamping force of the flaps 31a and 31b is too strong, the flow path 29a of the nozzle 29 is blocked and the contents do not flow out smoothly.

  Further, by storing and holding the packaging bag 20 in the outer carton 30, the flexible packaging bag 20 can be protected from external impacts. Further, by providing the outer carton 30 with self-supporting properties, the soft packaging bag 20 that does not stand on its own can be self-supported together with the outer carton 30.

  FIG. 4 is a development view of the outer carton constituting the composite package according to the embodiment of the present invention. The outer carton 30 includes a rear plate 101, a front plate 102, side plates 107, 108, a bottom plate 103, 104, flaps 31 a, 31 b, upper adhesive margin pieces 105 a, 105 b, and side adhesive margin pieces 106, with creases 201, 202. , 203, 204, 205, 206, 231a, 231b, 207a, 207b. The rear plate 101, the side plate 108, the front plate 102, and the side plate 107 are folded back along the fold lines 204, 203, 202, 201, and the side adhesive margin piece 106 is attached to the rear plate 101. Thereby, the body of the exterior carton 30 is formed.

  Bottom plates 103 and 104 and bottom flaps 111 and 112 are connected to lower portions of the rear plate 101, the front plate 102, and the side plates 107 and 108 via folding lines 205, 206, 211, and 212. Folded pieces 113 and 114 are connected to the bottom plates 103 and 104 via broken lines 213 and 214. By combining the bottom plates 103 and 104 and the bottom flaps 111 and 112 and sticking the folded pieces 113 and 114 to the bottom flaps 112 and 111, an auto bottom type bottom plate is formed in the exterior carton 30.

  The packaging bag 20 is stored in the body of the outer carton 30 that opens upward with the nozzle 29 facing upward. Further, the upper portions of the side plates 107 and 108 are folded inside the outer carton 30 along the folding lines 221a, 221b, 221c, 221d, 222a, 222b, 222c, and 222d formed on the upper portions of the side plates 107 and 108. Thereafter, the upper adhesive margin pieces 105a and 105b are bent together with the holding portions 26a and 27a along the creases 207a and 207b and attached to the rear plate 101. Thereby, the upper edge of the outer carton 30 is closed, and the packaging bag 20 is held in the outer carton 30. At this time, the pair of flaps 31a and 31b are folded inside the cylindrical body along the creases 231a and 231b. As a result, an opening 37 is formed on the upper edge of the outer carton 30 where the upper adhesive margin pieces 105a and 105b are not provided. When the nozzle 29 is projected from the opening 37, the nozzle 29 is sandwiched between the pair of flaps 31a and 31b.

  The rear plate 101 of the outer carton 30 is provided with a crease 230 in the horizontal direction perpendicular to the crease 204. As a result, when the portion above the crease 230 is pinched with a finger, the rear plate 101 is easily bent along the crease 230. Therefore, the contents can be easily extruded from the top of the outer cart 30 with the packaging bag 20 in between. The crease 230 formed in the horizontal direction may be provided on the front plate 102 and the side plates 107 and 108 across the ruled lines 201, 202, 203, and 204. Further, the crease 230 may be divided in the middle.

  An opening window 102 a is provided on the front plate 102 of the exterior carton 30. Thereby, the user can confirm the remaining amount of contents from the opening window 102a. Further, when the contents are poured out, the contents can be pushed out by pressing the packaging bag 20 directly from the opening window 102a with a finger.

The exterior carton 30 can give a certain impact resistance and self-supporting property by using a paperboard having a basis weight of 300 g to 500 g / m ² . Further, the basis weight of the paperboard used for the exterior carton 30 can be changed according to the size of the packaging bag 20. A polyethylene-coated paper having a basis weight of 140 g to 400 g / m ² having a polyethylene resin on the front and back surfaces of the paperboard may be used. Thereby, when putting the composite package 10 concerning this embodiment in a place with much moisture, water resistance can be provided to the exterior carton 30.

  FIG. 5 is a cross-sectional view showing a layer structure of a packaging bag used in the composite package according to the embodiment of the present invention. The flexible laminated film 60 constituting the packaging bag 20 is configured by sequentially laminating a base material layer 61 that is an outermost layer and a thermal adhesive resin layer 63 that is an innermost layer. A dry laminate layer 62 is formed between the base material layer 61 and the thermoadhesive resin layer 63.

  When the packaging bag 20 is subjected to severe physical and chemical conditions, the base material layer 61 has high sealing performance, puncture resistance (pinhole resistance), heat resistance, light resistance, and quality maintenance. , Workability, hygiene and the like.

  Examples of the base material layer 61 include low density polyethylene, medium density polyethylene, high density polyethylene, linear low density polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid. Ethyl copolymer, ethylene-acrylic acid or methacrylic acid copolymer, methylpentene polymer, polybutene resin, polyvinyl chloride resin, polyvinyl acetate resin, polyvinylidene chloride resin, vinyl chloride-vinylidene chloride copolymer , Poly (meth) acrylic resin, polyacrylonitrile resin, polystyrene resin, acrylonitrile-styrene copolymer (AS resin), acrylonitrile-butadiene styrene copolymer (ABS resin), polyester resin, polyamide resin Resin, poly -Any known resin film or sheet such as sulfonate resin, polyvinyl alcohol resin, saponified ethylene-vinyl acetate copolymer, fluorine resin, diene resin, polyacetal resin, polyurethane resin, nitrocellulose, etc. Can be used.

  The film or sheet may be any of unstretched, uniaxially or biaxially stretched. A preferable example is a biaxially stretched nylon film. In addition, a light-shielding film or sheet obtained by adding a desired additive such as a colorant or an ultraviolet absorber and kneading to form a film can also be used. It can be used by selecting from a range of several μm to 300 μm.

  The heat-adhesive resin layer 63 only needs to be capable of being melted by heat and fusing the laminated films 60 facing each other. For example, low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear (line Shape) Low density polyethylene, ethylene / α-olefin copolymer polymerized using metallocene catalyst (single site catalyst), polypropylene, ethylene / vinyl acetate copolymer, ionomer resin, ethylene-ethyl acrylate copolymer, Polyolefin resins such as ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, ethylene-propylene copolymer, methylpentene polymer, polyethylene or polypropylene are used for acrylic acid, methacrylic acid, maleic anhydride, fumaric acid, etc. Acid-modified polyolefin modified with unsaturated carboxylic acid It one not selected from resins and the like can be used or two or more. Preferable examples include linear low density polyethylene. The thickness of the heat-adhesive resin layer 63 is preferably about 10 μm to 100 μm, particularly preferably about 15 μm to 50 μm, considering heat sealability and the like.

  The dry laminate layer 62 prevents the occurrence of delamination by firmly adhering the base material layer 61 and the thermoadhesive resin layer 63 constituting the laminated film. Examples of the laminating adhesive composing the dry laminating layer 62 include, for example, polyvinyl acetate adhesive, homopolymers such as ethyl acrylate, butyl, 2-ethylhexyl ester, and methyl methacrylate, acrylonitrile, styrene. Polyacrylic acid ester adhesives, cyanoacrylate adhesives, and copolymers of ethylene and monomers such as vinyl acetate, ethyl acrylate, acrylic acid, and methacrylic acid. Polymer-based adhesives, cellulose-based adhesives, polyester-based adhesives, polyamide-based adhesives, polyimide-based adhesives, amino resin-based adhesives such as urea resins or melamine resins, phenolic resin-based adhesives, epoxy-based adhesives, Polyurethane adhesive, reactive (meth) acrylic adhesive Chloroprene rubber, nitrile rubber, styrene - rubber adhesive comprising a butadiene rubber, a silicone-based adhesive, an alkali metal silicate, may be used an inorganic adhesive or the like made of a low-melting-point glass or the like.

  INDUSTRIAL APPLICABILITY The present invention can be used for a composite package for packaging food, daily necessities, and pharmaceutical preparations such as liquid and gel as contents.

DESCRIPTION OF SYMBOLS 10 Composite package body 20 Packaging bag 23, 24 Side 25 Bottom 26, 27 Oblique 26a, 27a Holding part 26b, 27b Protrusion part 28 Storage part 29 Nozzle 29a Flow path 29b Notch 29c Connection part 30 Exterior carton 31a, 31b Flap 37 Opening Part 60 Laminated film 61 Base material layer 62 Thermal adhesive resin layer 63 Dry laminate layer

Claims (8)

A storage unit that encloses the contents by joining the edges by facing a soft laminate including at least the base material layer and the heat-adhesive resin layer that is the innermost layer, and connected outwardly to the storage unit A composite package comprising a packaging bag having a protruding nozzle and a self-supporting exterior carton that stores and holds the packaging bag,
The nozzle is protruded to the outside from an opening provided in the upper part of the outer carton, and the nozzle is moved by an external restoring force of a pair of flaps connected to the periphery of the opening and bent inward of the opening. A composite packaging body characterized in that the holding portion that protrudes upward from the edge portion of the storage portion and the upper portion of the outer carton are fixed on both sides of the nozzle.   2. The composite package according to claim 1, wherein an inner diameter of the storage portion decreases as it approaches a connection portion with the nozzle.   The edge portion of the storage portion has a pair of side sides, a hypotenuse is formed from the upper end of the pair of side sides to the connecting portion, and the width of the hypotenuse decreases as the connecting portion approaches. Item 3. A composite package according to Item 2.   4. The composite package according to claim 3, wherein an intersection between the upper end of the side edge and the oblique side is sealed in an arc shape.   The edge part of the said accommodating part has a pair of side and base, and the corner | angular part which the said side edge lower end and the said base cross | intersect is sealed diagonally. A composite package according to Item.   The edge part of the said accommodating part has a pair of side and base, and the corner | angular part which the said side edge lower end and the said base cross | intersect is sealed in circular arc shape. The composite package according to Item 1.   The composite package according to any one of claims 1 to 6, wherein a crease is provided in a substantially horizontal direction of the outer carton.   The composite packaging body according to any one of claims 1 to 7, wherein an opening window that exposes the packaging bag is provided in the exterior carton.

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