JP2013035555A - Package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a package that can stably stand by itself.SOLUTION: The package 20 is formed of a laminate including a thermally adhesive resin layer in the innermost layer thereof. In the package, right and left ends of a front surface part 11 and a back surface part 12 that are disposed opposite to each other, are connected to each other by a first gusset 13 and a second gusset 14 that are folded inward, a tubular pouring part 15 is provided in an upper part of the first gusset 13, and a horizontal width of the first gusset 13 is formed narrower than that of the second gusset 14.

Description

  The present invention relates to a self-supporting package for packaging a liquid or gel fluid.

  A conventional package is disclosed in Patent Document 1. A package for hermetically storing a liquid or gel-like fluid such as shampoo or beverage is composed of a laminate in which a heat-adhesive resin layer is disposed on the innermost layer. The package body is connected by a gusset portion in which one of the side portions of the front portion and the rear portion facing each other is thermally bonded and the other is folded inward. As a result, the package filled with the contents swells in a triangular prism shape, and a triangular bottom surface is formed to give the package a self-supporting property. Moreover, the upper part of the side part of a package is cut | disconnected diagonally, and the spout of a content is formed.

  However, the spout formed by cutting the package has a problem that it is difficult to pour the contents from the spout by adhering the opposing laminate due to the surface tension of the contents attached to the inner surface and closing the flow path of the spout. there were. For this reason, in the conventional packaging body, the tubular pouring part resin-molded was provided in the pouring outlet, and the content was poured out.

JP 2002-284186 A

  However, according to the said package, when the extraction | pouring part was distribute | arranged to the upper side end of the package, the center of gravity of the package which became independent with the weight of the extraction | pouring part shifted and there existed a problem which fell easily.

  In view of the above problems, an object of the present invention is to provide a package that can stably stand by itself.

  In order to achieve the above object, the present invention is a packaging body formed of a laminate having a heat-adhesive resin layer as the innermost layer, wherein the front and back end portions arranged opposite to each other have The first gusset portion and the second gusset portion that are folded inwardly are connected to each other, and a tubular pouring portion is provided on the upper side of the first gusset portion, and the lateral width of the first gusset portion is narrower than the lateral width of the second gusset portion. It is characterized by that.

  According to this configuration, when the package is filled with the contents, the folded first gusset part and second gusset part spread, and the front part, the rear part, the first gusset part, and the second gusset part are used as a peripheral surface, and a rectangular column shape The package expands. In addition, four sides are formed by the front part and the connecting part of the first gusset part and the second gusset part, and the back part and the connecting part of the first gusset part and the second gusset part. It abuts and the bottom of the package becomes square. In addition, since the lateral width of the first gusset portion is narrower than the lateral width of the second gusset portion, the slope formed by the front portion and the back portion narrows from the second gusset portion toward the first gusset portion side.

  Further, in the packaging body configured as described above, the first gusset portion and the second gusset portion are thermally bonded to the front surface portion and the back surface portion by a heat bonding portion, and the width of the heat bonding portion of the second gusset portion is It is characterized by being larger than the width of the thermal bonding portion of the first gusset portion. According to this structure, the strength of the heat-bonded portion of the second gusset portion having a large width is higher than that of the heat-bonded portion of the first gusset portion having a small width.

  Further, the present invention is characterized in that, in the package having the above-described configuration, the thermal bonding portion of the first gusset portion protrudes from the front side and the back side around the extraction portion. According to this configuration, when the package is tilted to the side during pouring, the contents are smoothly poured out from the pouring portion through the surface of the first gusset portion.

  Moreover, this invention is characterized by the width | variety of the said heat bonding part of a 2nd gusset part being 10-20 mm in the package of the said structure.

  Moreover, this invention is characterized by the width | variety of the said heat bonding part of a 1st gusset part being 3-10 mm in the package of the said structure.

  Moreover, the present invention is characterized in that the first gusset portion, the front portion, and the back portion are integrally formed of the same member in the package having the above-described configuration.

  According to the present invention, when the package body is filled with the contents, the folded first gusset portion and second gusset portion spread, and the front body portion, the back surface portion, the first gusset portion, and the second gusset portion serve as the peripheral surface. Swells like a square pole. Moreover, each connection part of a front part, a back part, a 1st gusset part, and a 2nd gusset part becomes a side of a square pole, a side edge lower end contact | abuts to an installation surface, and the bottom face of a package is formed in a rectangle. Thereby, since the space between a front part and a back part spreads with the lateral width of a 1st gusset part and a 2nd gusset part, the capacity | capacitance of a package can be increased. Moreover, the extraction | pouring part provided in the upper side of the 1st gusset part is supported by the several surface connected with a 1st gusset part and a 1st gusset part. Therefore, the pouring part 15 can be prevented from falling to the side, the front, and the back, and a package that can stably stand by can be provided. In addition, since the lateral width of the first gusset portion is narrower than the lateral width of the second gusset portion, the slope formed by the front portion and the back portion narrows from the second gusset portion toward the first gusset portion side. Thereby, when a package is inclined to the 1st gusset part side, the contents can be collected on the 1st gusset part side, and a content can be smoothly poured out from the extraction | pouring part.

The perspective view of the package which concerns on 1st Embodiment of this invention. The bottom view of the package which concerns on 1st Embodiment of this invention. The side view of the package which concerns on 1st Embodiment of this invention. The perspective view which shows the state before heat bonding of the package which concerns on 1st Embodiment of this invention. Sectional drawing which shows the layer structure of the laminated body which comprises the package which concerns on 1st Embodiment of this invention. The perspective view which shows the state before heat bonding of the package which concerns on 2nd Embodiment of this invention.

[First embodiment]
Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are a perspective view, a bottom view, and a side view of the package 20 according to the present embodiment.

  The package 20 has a peripheral surface 21 and a bottom surface 22 formed by connecting four surfaces, and a pouring portion 15 for pouring contents is provided on the upper side of the peripheral surface 21. Each surface of the package 20 is composed of a laminate 60 (see FIG. 5) including a base material layer 61, a barrier layer 62, and a heat-adhesive resin layer 63, with the innermost heat-adhesive resin layer 63 facing each other. A storage space 28 for storing contents is formed by thermally bonding the edges with a predetermined width.

  The peripheral surface 21 of the package 20 is composed of a front part 11, a back part 12, a first gusset part 13, and a second gusset part 14, the front part 11 and the back part 12 face each other, and the first gusset part 13 and the first gusset part 13 Two gusset portions 14 face each other. The front portion 11 and the rear portion 12 have substantially the same width, and the first gusset portion 13 has a smaller width than the second gusset portion 14. Thereby, the package 20 filled with the contents is trapezoidal in a plan view. The front surface portion 11, the back surface portion 12, the first gusset portion 13, and the second gusset portion 14 are thermally bonded by thermal bonding portions 16a to 16f, and are connected to each other. The heat bonding portions 16 a to 16 f have higher strength than the region that is not heat bonded, and the heat bonding portions 16 a to 16 f form the skeleton of the package 20.

  FIG. 4 is a perspective view showing a state of the package body 20 before thermal bonding. As shown in FIG. 4, in the manufacturing process of the package body 20, the first gusset portion folded in advance along the folding lines 13a and 14a. 13 and the second gusset portion 14 are sandwiched between the left and right ends of the front portion 11 and the back portion 12. Next, both sides and lower sides of the front portion 11 and the back portion 12 are heat-sealed with a predetermined width, and the respective surfaces are connected by the heat bonding portions 16a to 16e.

  As shown in FIG. 2, the bottom surface 22 of the packaging body 20 is a quadrangle having the thermal bonding portions 16 a to 16 d as apexes, and each side of the bottom surface 20 is a front surface portion 11, a back surface portion 12, and a first gusset depending on the content load. The lower part of the part 13 and the second gusset part 14 is formed by bending. Further, the bottom surface 20 is formed in a trapezoidal shape with the side formed by the first gusset part 13 being shorter than the side formed by the second gusset part 14. Further, the lower sides of the front surface portion 11, the back surface portion 12, the first gusset portion 13, and the second gusset portion 14 are connected to each other by a heat bonding portion 16e to seal the bottom surface 22.

  Further, as shown in FIG. 3, the upper portion of the package 20 is sealed by a heat bonding portion 16f, and the heat bonding portion 16f covers the upper side of the second gusset portion 14 and a part of the upper side of the front surface portion 11 and the back surface portion 12. Each is formed by thermal bonding. Moreover, the opening part 23 protrudes upwards from a part of the front part 11 and the back part 12 connected to the first gusset part 13 and the first gusset part 13. The opening part 23 is formed in a cylindrical shape, and a tubular pouring part 15 molded with resin is inserted. The outer peripheral surface of the extraction portion 15 and the inner peripheral surface of the opening 23 are bonded together by an adhesive portion 24. A lid portion (not shown) is arranged on the upper portion of the dispensing portion 15 so as to be openable and closable. In addition, the thermal bonding portions 16 c and 16 d of the first gusset portion 13 protrude to the front side and the back side around the extraction portion 15. As a result, when the contents are poured out, the contents are smoothly poured out from the pouring portion 15 through the surface of the first gusset portion 13 when the packaging body 20 is tilted to the side.

  Moreover, when the pouring part 15 inclines to the outer side of the 1st gusset part 13 with the weight of the pouring part 15, the upper part of the 2nd gusset part 14 is pulled by the heat bonding part 16f connected with the opening part 23, and the 2nd gusset The force which bends the part 14 works. However, since the width of the thermal bonding portions 16a and 16b of the second gusset portion 14 is larger than the width of the thermal bonding portions 16c and 16d formed on both sides of the first gusset portion 13, the strength of the second gusset portion 14 is high. The second gusset portion 14 is difficult to bend. For this reason, it can prevent that the heat bonding part 16a, 16b of the 2nd gusset part 14 draws the heat bonding part 16f to the 2nd gusset part 14 side, and the extraction part 15 inclines outside the 1st gusset part 13. . Thereby, it can prevent that the package 20 deform | transforms easily and can stabilize independence.

  Specifically, it is preferable that the width of the thermal bonding portions 16a and 16b of the second gusset portion 14 is 10 to 20 mm. When the width of the thermal bonding portions 16a and 16b is smaller than 10 mm, the strength of both side portions of the second gusset portion 14 is low, and the second gusset portion 14 is easily bent. For this reason, the extraction | pouring part 15 becomes easy to incline outside the 1st gusset part 13. FIG. On the other hand, when the width of the heat bonding portions 16a and 16b is larger than 20 mm, the lateral width of the second gusset portion 14 is narrowed, and the capacity of the storage portion 28 is reduced. Moreover, it is preferable to form the width | variety of the heat bonding parts 16c and 16d of the 1st gusset part 13 at 3-10 mm. When the widths of the thermal bonding portions 16c and 16d are smaller than 3 mm, the first gusset portion 13 is easily bent so that the extraction portion 15 falls down toward the second gusset portion 14 due to the weight of the extraction portion 15. Moreover, when the width | variety of the heat bonding parts 16c and 16d is smaller than 3 mm, the adhesiveness and sealing performance of the heat bonding parts 16c and 16d are not fully acquired. On the other hand, when the width of the thermal bonding portions 16c and 16d is larger than 10 mm, the lateral width of the first gusset portion 13 is narrowed, and the capacity of the storage portion 28 is reduced.

  FIG. 5 is a cross-sectional view showing the layer configuration of the laminate 60 that constitutes the package 20. The laminated body 60 constituting the package 20 is configured by sequentially laminating a base material layer 61 that is an outermost layer, a thermoadhesive resin layer 63 that is an innermost layer, and a barrier layer 62 that is an intermediate layer. Each layer is bonded with a dry laminate adhesive.

  When the packaging body 20 is subjected to physically and chemically severe 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 heat-adhesive resin layer 63 may be any material that can be melted by heat and can fuse the opposing laminates 60 to 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 resin modified with unsaturated carboxylic acid It one not selected from may be used or two or more kinds. 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 barrier layer 62 may be made of a metal such as aluminum or nickel, a film deposited with silicon oxide, alumina, or the like, or a heat resistant resin such as polyethylene terephthalate or polyethylene naphthalate. Alternatively, the barrier layer 62 may be omitted to form the soft laminate 60.

  The dry laminating adhesive firmly adheres the base material layer 61, the barrier layer 62, and the thermoadhesive resin layer 63 constituting the laminate 60 to prevent the occurrence of delamination. Examples of dry laminate adhesives include polyvinyl acetate adhesives, homopolymers such as ethyl acrylate, butyl, 2-ethylhexyl ester, or copolymers of these with methyl methacrylate, acrylonitrile, styrene, etc. Polyacrylic acid ester adhesives, cyanoacrylate adhesives, ethylene copolymer adhesives made of copolymers of ethylene and monomers such as vinyl acetate, ethyl acrylate, acrylic acid, methacrylic acid, etc., cellulose Adhesives, polyester adhesives, polyamide adhesives, polyimide adhesives, amino resin adhesives made of urea resin or melamine resin, phenol resin adhesives, epoxy adhesives, polyurethane adhesives, reactive type (Meth) acrylic adhesive, chloroprene rubber, nitrile Beam, 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.

  According to the present embodiment, when the package 20 is filled with the contents, the folded first gusset portion 13 and second gusset portion 14 spread, and the front portion 11, the back portion 12, the first gusset portion 13, the second portion. The wrapping body 20 swells in a quadrangular prism shape with the gusset portion 14 as the peripheral surface 21. As a result, four sides are formed by the front part and the connecting part of the first gusset part and the second gusset part, and the back part and the connecting part of the first gusset part and the second gusset part. The bottom surface of the package body becomes a quadrangular shape in contact with. At this time, since the space between the front part 11 and the back part 12 is expanded by the lateral width of the first gusset part 13 and the second gusset part 14, the capacity of the package 20 can be increased. Moreover, since the rectangular bottom face is formed and the package body 20 is supported, the package body 20 is provided with self-supporting properties. In addition, the extraction portion 15 provided on the upper side of the first gusset portion 13 is supported by a plurality of peripheral surfaces 21 of the package 20. Thereby, it can prevent that the extraction | pouring part 15 falls down to the side, the front side, and the back side, and can provide the packaging body 20 which can be stabilized independently. Further, since the width of the first gusset portion 13 is narrower than the width of the second gusset portion 14, the slope formed by the front portion 11 and the back portion 12 is from the second gusset portion 14 to the first gusset portion 13 side. It narrows as it approaches. Thereby, when the packaging body 20 is tilted toward the first gusset portion 13, the contents can be gathered on the first gusset portion 13 side, and the contents can be smoothly poured out from the pouring portion 15.

  Moreover, the 1st gusset part 13 and the 2nd gusset part 14 heat-bond the front part 11 and the back part 12 with the heat bonding parts 16a-16d, and the heat bonding parts 16a-16d reinforce the side of the package body 20. To become a skeleton. Thereby, the deformation | transformation by the inclination of the package 20 can be prevented. Further, since the width of the thermal bonding portions 16 a and 16 b of the second gusset portion 14 is larger than the width of the thermal bonding portions 16 b and 16 c of the first gusset portion 13, the force that the pouring portion 15 is inclined to the outside of the first gusset portion 13. Even if a force is applied to the second gusset portion 14 in conjunction with the movement, the second gusset portion 14 is difficult to bend. Thereby, it can prevent that the extraction | pouring part 15 inclines outside the 1st gusset part 13, and can prevent that the self-supporting of the package 20 becomes unstable.

  Moreover, since the heat bonding parts 16c and 16d of the first gusset part 13 protrude to the front side and the back side around the pouring part 15, when the packaging body 20 is tilted to the side during pouring, the contents are removed. It is possible to smoothly pour out from the pouring portion 15 through the surface of the first gusset portion 13.

  Further, by forming the width of the thermal bonding portions 16a and 16b of the second gusset portion 14 to 10 to 20 mm, it is possible to prevent the thermal bonding portions 16a and 16b of the second gusset portion 14 from being easily bent. Further, it is possible to suppress the capacity of the storage unit 28 from being reduced. Further, by forming the width of the thermal bonding portions 16c and 16d of the first gusset portion 13 to 3 to 10 mm, the thermal bonding portions 16c and 16d of the first gusset portion 13 can be easily bent by the weight of the extraction portion 15. Can be prevented. Further, it is possible to suppress the capacity of the storage unit 28 from being reduced.

[Second Embodiment]
FIG. 6 is a perspective view of the package 20 according to the second embodiment. In addition, the same part as 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits description. In contrast to the first embodiment, in the second embodiment, the first gusset portion 13, the front portion 11, and the back portion 12 are integrally formed of the same member. That is, the first gusset part 13, the front part 11, and the back part 12 are formed by a single laminate 70. After the laminated body 70 is valley-folded along the fold line 13a, the laminated body 70 is folded along the fold lines 13c and 13d provided on both sides of the fold line 13b. Thereby, the 1st gusset part 13, the front part 11, and the back part 12 can be connected without passing through a heat bonding part. Next, the package 20 having the same function as that of the first embodiment can be formed by sandwiching and thermally bonding the second gusset portion 14, which is a separate member, between the front portion 11 and the back portion 12. it can.

  That is, the capacity of the package 20 can be increased by inflating the package 20 into a quadrangular prism shape. Moreover, since the rectangular bottom face is formed and the package body 20 is supported, the package body 20 is provided with self-supporting properties. Further, the extraction portion 15 disposed on the upper side end of the package 20 is supported by a plurality of peripheral surfaces 21 of the package 20. Therefore, the pouring part 15 can be prevented from falling to the side, front side, and back side, and the packaging body 20 that can stably stand by can be provided. Further, by forming the first gusset portion 13 so that the width of the first gusset portion 13 is narrower than the width of the second gusset portion 14, the slope formed by the front portion 11 and the back portion 12 extends from the second gusset portion 14 to the first gusset portion 13 side. It narrows as it gets closer. Therefore, the contents can be gathered on the first gusset part 13 side and the contents can be smoothly poured out from the pouring part 15.

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

DESCRIPTION OF SYMBOLS 11 Front part 12 Back part 13 1st gusset part 13a-13c Folding line 14 2nd gusset part 14a Folding line 15 Extraction part 16a-16f Thermal bonding part 20 Packaging body 21 Peripheral surface 22 Bottom face 23 Opening part 24 Adhesion part 60 Lamination | stacking Body 61 Base material layer 62 Barrier layer 63 Thermal adhesive resin layer

Claims (6)

  A packaging body formed of a laminate having a heat-adhesive resin layer as an innermost layer, the first gusset part and the first gusset part in which the left and right end parts of the front part and the back part arranged in opposition are folded inward A packaging body characterized by being connected to each other by two gusset portions, providing a tubular pouring portion on the upper side of the first gusset portion, and forming the lateral width of the first gusset portion narrower than the lateral width of the second gusset portion.   The first gusset portion and the second gusset portion are thermally bonded to the front portion and the back portion by a heat bonding portion, and the width of the heat bonding portion of the second gusset portion is larger than the width of the heat bonding portion of the first gusset portion. The package according to claim 1.   The package according to claim 2, wherein the thermal bonding portion of the first gusset portion protrudes to the front side and the back side around the extraction portion.   The package according to claim 2 or 3, wherein a width of the thermal bonding portion of the second gusset portion is 10 to 20 mm.   The package according to any one of claims 2 to 4, wherein a width of the thermal bonding portion of the first gusset portion is 3 to 10 mm.   The packaging body according to claim 1, wherein the first gusset portion, the front portion, and the back portion are integrally formed of the same member.

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