JP2012153400A - Lateral gusset bag provided with opening part on top, and method of manufacturing packaged body using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel packaging bag which has a self standing property, has a large opening capable of re-sealing, and facilitates the takeout of bulky contents, and to provide a method of manufacturing a packaged body using the packaging bag.SOLUTION: A lateral gusset bag having a rectangular solid approximation shape is manufactured by sealing a peripheral edge while making sealant layers of laminates each of which has a substrate layer and a sealant layer oppose each other, and the lateral gusset bag has hem seal parts between a top surface and a front surface, between the front surface and a bottom surface and between the bottom surface and a back surface, respectively. Right and left both ends of the top surface and the bottom surface are folded into a V-shape to form a gusset, a vertical side seal part is formed together with right and left both ends of the front surface and the back surface to form the right side surface and the left side surface. The back surface is extended to the upper side from the height of the top surface, the top surface is folded at a right angle at the position of the back surface and extended to the upper side, the back surface and the top surface are fused at the extended tip end to form a takeout flap as the opening of the packaging bag and the takeout flap has a re-sealing means on the under part of the top seal part of the tip end.

Description

  TECHNICAL FIELD The present invention relates to a rectangular parallelepiped-shaped flexible packaging bag, and in particular, a horizontal gusseted bag having a resealable large opening having a fastener on the upper part and suitable for continuous use for a certain period of time and the same are used. The present invention relates to a method for manufacturing a package.

  BACKGROUND ART A flexible packaging bag formed by facing a flexible packaging film having a heat-sealable sealant layer on the inner surface and sealing the periphery is used as a packaging container for storing various contents including food.

  As an outer bag for storing products that cannot be used at once, such as confectionery, sprinkles, tea bags, wet tissue, etc., use a fastener such as a polychuck for reservability after opening. A sealable outer bag is often used.

  Fasteners are usually provided on the short side of the package, and there is a problem that large openings cannot be obtained and it is difficult to take out articles. The packaging body described in Patent Document 1 has a wide opening by storing a wet tissue and arranging a fastener on the flap portion in the longitudinal direction and reversing the folded flap portion in order to facilitate its removal. This ensures easy removal of the wet tissue.

Japanese Patent No. 4416584

  Since the package described in Patent Document 1 has been developed as a package for wet tissue, it has a flat shape and no particular consideration is given to its independence. However, depending on the shape of the contents, there is a need for a packaging bag that requires a certain amount of height and that is self-supporting.

  The problem to be solved by the present invention is a packaging bag using a soft packaging material, which has a self-standing property and a large opening that can be resealed, and is easy to take out bulky contents. The present invention proposes a packaging bag and a method for producing a package using the packaging bag.

As means for solving the above-mentioned problems, the invention according to claim 1 has a rectangular parallelepiped approximate shape in which a laminate having at least a base material layer and a sealant layer is opposed to each other and the periphery is sealed. A horizontal gusset bag with top, front, bottom, back, right, and left sides, narrow between the top and front, between the front and bottom, and between the bottom and back. It has a hem seal part that is a linear seal part with a width, folds the left and right ends of the top and bottom surfaces into a V-shape to form a gusset part, and forms a vertical side seal part with the front and back left and right ends The right side surface and the left side surface are formed, and the back surface is extended above the height of the top surface, and the top surface is bent at a right angle at the position of the back surface and extended upward, both of which are extended. Take-off that is fused at the tip of the package to become the opening of the packaging bag A flap is formed, and the take-out flap is a horizontal gusset bag having an opening at the top, characterized by having a resealing means below the planned opening line at the bottom of the top seal at the tip. .

  The invention according to claim 2 is the horizontal gusset bag having an opening in the top according to claim 1, wherein the resealing means is a fastener made of synthetic resin.

  The invention according to claim 3 is characterized in that the resealing means is a pressure-sensitive adhesive layer provided on both sides of the opposing surface, and an opening is provided in the top according to claim 1 It is a horizontal gusset bag.

  The invention according to claim 4 is the horizontal gusset bag provided with an opening at the top according to any one of claims 1 to 3, wherein the contents are tea bags.

  Further, the invention according to claim 5 is a process of continuously supplying a belt-like laminate having at least a base material layer and a sealant layer, rounding the sealant layer so as to be inside, and forming a cylindrical shape, The step of continuously forming the hem seal portion to form the top surface, the front surface, the bottom surface, and the back surface, the step of providing the resealing means on the side that becomes the inner surface of the cylinder of the laminate, and heat-sealing the side end portions A step of forming a top seal portion, a step of forming U-shaped corner seal portions under the top seal portion at regular intervals to form an extraction flap, and cutting at the center of the U-shaped corner seal portion. A step of forming a rectangular column-shaped tube, a step of notching an unsealed portion of the U-shaped corner seal portion, and folding the left and right ends of the top and bottom surfaces of the rectangular column-shaped tube into a V shape. Form gussets at the front and back edges After forming the vertical side seal part together, the contents are stored, then the other end of the top and bottom surfaces are folded into a V shape to form a gusset part, which is vertical along with the other front and back edges The top opening according to any one of claims 1 to 4, comprising a step of forming a right side surface and a left side surface by forming a side seal portion and sealing the packaging bag. It is a manufacturing method of the package using the horizontal gusset bag provided with.

  The lateral gusset bag provided with an opening in the top according to the present invention is a rectangular parallelepiped approximate shape packaging bag having a top surface, a front surface, a bottom surface, a back surface, a right side surface, and a left side surface, Since there is a hem seal portion that is a narrow linear seal portion between the front surface, between the front surface and the bottom surface, and between the bottom surface and the back surface, this hem seal portion exhibits a reinforcing effect, so a thin laminate Even if it is a case where a container is used, the container which has independence can be implement | achieved.

  In addition, the back surface is extended above the height of the top surface, the top surface is bent at a right angle at the position of the back surface and extended upward, and both are fused at the extended tip to open the packaging bag. Since the take-out flap as a part is formed, the opening can be opened widely in combination with the horizontally long opening. Therefore, even large contents can be easily taken out.

  Moreover, since the flap for taking out has a resealing means below the planned opening line at the bottom of the top seal part at the tip, for example, for a use such as a tea bag that is continuously used for a certain period of time. Is suitable.

  When a synthetic resin fastener is used as the resealing means, the fastener can be attached in accordance with the step of forming the top seal portion, so that the packaging bag can be easily manufactured.

  Further, when a pressure-sensitive adhesive layer is provided on both sides of the opposing surface as the resealing means, resealing is possible with one touch, and the packaging bag is easy to use.

According to the manufacturing method of claim 5, a strip-shaped laminate is continuously supplied, rounded so that the sealant layer is on the inside, and formed into a cylindrical shape, and three hem seal portions are continuously formed. A step of forming a top surface, a front surface, a bottom surface, and a back surface, a step of providing a re-sealing means on the side that becomes the inner surface of the cylinder of the laminate, a step of heat-sealing the side end portions to form a top seal portion, and Each step of forming U-shaped corner seals at the bottom of the top seal at regular intervals to form the flap for extraction can be set as a series of continuous processes, so that packaging bags can be manufactured efficiently. Can do.

FIG. 1 is a perspective view showing an embodiment of a horizontal gusset bag having an opening in the top according to the present invention. FIG. 2A is a schematic cross-sectional view showing the A-A ′ cross section of FIG. 1, and FIG. 2B is an explanatory cross-sectional view showing a place where an opening is opened and contents are taken out. 3 to 9 are perspective explanatory views showing steps in a method of manufacturing a package using a horizontal gusset bag having an opening in the top according to claim 5 of the present invention, and FIG. It is perspective explanatory drawing which showed the process of supplying a laminated body continuously and rounding so that a sealant layer may become inside, and making it a cylinder shape. FIG. 4 is a perspective explanatory view showing a step of continuously forming three hem seal portions on the cylinder of the laminated body to form a top surface, a front surface, a bottom surface, and a back surface, and a step of providing resealing means on the inner surface. is there. FIG. 5 is a perspective explanatory view showing a step of forming the top seal portion by heat-sealing the side end portions, and a step of forming U-shaped corner seal portions at regular intervals to form a take-out flap. It is. FIG. 6 shows a step of cutting a continuously formed laminated cylinder at the center of a U-shaped corner seal portion to form a quadrangular columnar cylinder, and a not-sealed portion of the corner seal portion is cut away. It is perspective explanatory drawing which showed the process. FIG. 7 shows a gusset portion formed by folding the left and right end portions of the top and bottom surfaces of the square columnar tube into a V shape, and forming a vertical side seal portion together with the left and right end portions of the front and rear surfaces. 5 is a perspective explanatory view showing a process of storing the contents and then folding the right end of the top and bottom surfaces into a V shape to form a gusset portion. FIG. 8 is an explanatory perspective view showing a process of forming the right side seal portion to form the right side surface and sealing the packaging bag. FIG. 9 is a perspective explanatory view showing a state in which the package body using the horizontal gusset bag according to the present invention is shaped by folding the left and right side seal portions.

Hereinafter, a lateral gusset bag having an opening at the top according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing an embodiment of a horizontal gusset bag having an opening in the top according to the present invention. FIG. 2A is a schematic cross-sectional view showing the AA ′ cross-section of FIG. 1, and FIG. 2B is an explanatory cross-sectional view showing a place where an opening is opened to take out the contents.

A lateral gusset bag (1) according to the present invention is a packaging bag having a rectangular parallelepiped approximate shape in which a laminate having at least a base material layer and a sealant layer is opposed to each other and the periphery is sealed. (2) having a front surface (3), a bottom surface (4), a back surface (5), a right side surface (6), and a left side surface (7), between the top surface (2) and the front surface (3), Between the front surface (3) and the bottom surface (4), between the bottom surface (4) and the back surface (5), there is a hem seal portion (8) which is a narrow linear seal portion, and the top surface (2) and The left and right ends of the bottom surface (4) are folded in a V shape to form a gusset portion (9), and the vertical side seal portions (10) are formed together with the left and right ends of the front surface (3) and the back surface (5). A right side surface (6) and a left side surface (7) are formed.

  In the horizontal gusset bag (1) provided with an opening in the top according to the present invention, the back surface (5) extends above the height of the top surface (2), and the top surface (2) is the position of the back surface (5). Are bent at right angles and extended upward, and both are fused at the extended tip to form an opening flap (11) that becomes an opening (16) of the packaging bag (1). The take-out flap (11) has resealing means (14) below the planned opening line (13) below the top seal portion (12) at the tip.

  As a laminated body used for the horizontal gusset bag which concerns on this invention, the laminated body normally used for a flexible packaging bag can be used. As the substrate layer, paper, metal foil or synthetic resin film consisting of one layer or several layers is used. For example, low density polyethylene resin (LDPE), high density polyethylene resin (HDPE), linear low density polyethylene resin (LLDPE), polypropylene resin (PP), polyolefin resin such as polyolefin elastomer, polyethylene terephthalate resin (PET), polyester resins such as polybutylene terephthalate resin (PBT), polyethylene naphthalate resin (PEN), cellulose resins such as cellophane and cellulose triacetate (TAC), polymethyl methacrylate (PMMA) resin, ethylene- Vinyl acetate copolymer resin (EVA), ionomer resin, polybutene resin, polyacrylonitrile resin, polyamide resin, polystyrene resin (PS), polyvinyl chloride resin (PVC), polyvinylidene chloride Resin (PVDC), polycarbonate resin (PC), fluorine-based resin, synthetic resin films and paper, such as urethane resin, a metal foil or the like alone or be used in combination. The base material layer includes a printing layer and an adhesive layer as necessary.

  As the paper, high-quality paper, piece art paper, coated paper, cast coated paper, imitation paper, and the like can be used. It is also effective to use paper from the viewpoint of environmental considerations.

  As the sealant layer, polyolefin resin is generally used. Specifically, low density polyethylene resin, medium density polyethylene resin, linear low density polyethylene resin, ethylene / vinyl acetate copolymer, ethylene / α-olefin are used. An ethylene resin such as a copolymer, a polypropylene resin such as a homopolypropylene resin, a propylene / ethylene random copolymer, a propylene / ethylene block copolymer, and a propylene / α-olefin copolymer are used. In addition, a multilayer film in which these resins are combined may be used.

  Specific examples of the structure of the laminate include a film composed of PET / printing layer / adhesive layer / stretched polyamide resin film (ONY) / adhesive layer / LLDPE, ONY / adhesive layer / LLDPE, ONY / Adhesive layer / ONY / adhesive layer / LLDPE, paper / LDPE / aluminum foil / LDPE, paper / LDPE, and the like. As an alternative to the aluminum foil, a transparent gas barrier film or an aluminum vapor deposition film using an inorganic oxide vapor deposition layer may be used.

  As shown in FIG. 3, the laminate may be formed so as to be rolled into a cylindrical shape with the sealant layer of one laminate inside, and two to four laminates are prepared. The hem seal portion (8) may be used in conjunction. In the case of using a plurality of laminates, the specifications of the laminate can be changed according to the use site.

  The hem seal portion (8) has a narrow width provided between the top surface (2) and the front surface (3), between the front surface (3) and the bottom surface (4), and between the bottom surface (4) and the back surface (5). It is a linear seal part. Due to the presence of the hem seal portion (8), the rigidity of the entire lateral gusset bag is increased, the shape retainability is increased, and it becomes easier to stand on its own. Although the width | variety of a hem seal | sticker part (8) is determined by the size of a horizontal gusset bag and the thickness of a laminated body, generally about 2-10 mm is suitable.

  The lateral gusset bag (1) according to the present invention has a gusset portion (9) formed by folding the left and right ends of the top surface (2) and the bottom surface (4) into a V shape, and includes a front surface (3) and a back surface (5). ) And the right and left end portions are formed to form a right side surface (6) and a left side surface (7). A normal gusset bag generally has a gusset portion formed on the bottom surface and the top surface. However, in the horizontal gusset bag according to the present invention, the gusset portion (9) is provided on both left and right side surfaces of the packaging bag. is there.

  With such a structure, the back surface (5) extends upward from the height of the top surface (2), and the top surface (2) "is bent at a right angle at the position of the back surface to extend upward. The top seal portion (12) is formed by fusing at the tip where both are extended, and the extended portion can be used as a take-off flap (11) that becomes an opening of the packaging bag. The take-off flap (11) is provided with a resealing means (14) such as a polychuck below the planned opening line (13) below the top seal part (12) at the tip, so Sealing became possible.

  As shown in FIG. 2 (2), the opening (16) is greatly opened by providing the take-out flap (11) having a certain length. For this reason, for example, a bulky content (17) such as a tea bag can be easily taken out.

  The length (height) of the take-out flap (11) is determined by the size of the horizontal gusset bag and the size of the contents, but about 20 mm to 100 mm is appropriate.

  The scheduled opening line (13) provided on the take-out flap (11) is a virtual line and may actually be nothing, but may be a half-cut line by laser cutting or a blade. You may provide V cut, U cut, etc. which become a trigger at the time of opening in the both ends of the opening expected line (13).

  The resealing means (14) is for resealing the once opened packaging bag, and a method of providing a synthetic resin fastener such as a polychuck on both sides of the opposing surface of the flap (11), A method in which pressure-sensitive adhesive layers are similarly provided on both sides of the opposing surface is used.

  Next, the manufacturing method of the horizontal gusset bag which concerns on this invention is demonstrated. 3 to 9 are perspective explanatory views showing respective manufacturing steps in the method for manufacturing a horizontal gusset bag having an opening in the top according to claim 5 of the present invention.

  FIG. 3 is a perspective explanatory view showing a step of continuously feeding the strip-shaped laminate (18) and rounding it so that the sealant layer is inside to form a cylindrical shape.

  In FIG. 4, three hem seal portions (8) are continuously formed on the cylinder of the laminate (18) to form a top surface (2), a front surface (3), a bottom surface (4), and a back surface (5). It is perspective explanatory drawing which showed the process and the process of providing a resealing means (14) in an inner surface. These two steps may be performed before or after or simultaneously.

FIG. 5 shows a process of forming the top seal part (12) by heat-sealing the side edges, and U
It is perspective explanatory drawing which showed the process of forming a letter-shaped corner seal part (19) at a fixed space | interval, and forming the flap for extraction (11).

  FIG. 6 shows a step of cutting a continuously-formed laminated cylinder at the center of the U-shaped corner seal portion (19) to form a square columnar cylinder, and the corner seal portion (19). It is perspective explanatory drawing which showed the process of notching an unsealed part. The three steps from the step of providing the U-shaped corner seal portion (19) to the step of notching the unsealed portion of the corner seal portion (19) may be performed simultaneously.

  FIG. 7 shows a gusset portion formed by folding the top end (2) and the left end of the bottom surface of the quadrangular prism tube into a V shape, and a side seal portion perpendicular to the front end (3) and the left end on the back After forming (10) and forming the left side surface (7), the contents are stored, then the top surface (2) and the right end of the bottom surface are folded into a V shape to form the gusset portion (9) It is perspective explanatory drawing which showed the process to do.

  FIG. 8 is a perspective explanatory view showing a process of forming the right side seal portion (10) to form the right side surface (6) and sealing the packaging bag.

  FIG. 9 shows a state in which the side seal portion (10) is folded so as to be in contact with the right side surface (6) and the left side surface (7), and the packaging body using the lateral gusset bag (1) according to the present invention is shaped. FIG. Thus, a package using the horizontal gusset bag according to the present invention was completed.

  The lateral gusset bag provided with an opening in the top according to the present invention can be freely set in the lateral length. Can be created. Moreover, since it has the opening part in the longitudinal direction and has the flap for extraction which protrudes from the top | upper surface, it has the characteristics that an opening part opens large and, therefore, it is easy to take out the bulky content.

DESCRIPTION OF SYMBOLS 1 ... Horizontal gusset bag 2 ... Top surface 3 ... Front surface 4 ... Bottom surface 5 ... Back surface 6 ... Right side surface 7 ... Left side surface 8 ... Hem seal part 9 ... Gusset part 10 ... Side seal part 11 ... Flap for extraction 12 ... Top seal part 13 ... Scheduled opening line 14 ... Re-sealing means 15 ... Poly chuck 16 ... Opening part 17 ... Contents 18 ... Laminated body 19 ... U-shaped corner seal part

Claims (5)

  A lateral gusseted bag having a rectangular parallelepiped approximate shape formed by stacking at least a base material layer and a sealant layer, with the sealant layers facing each other and sealing the periphery, and includes a top surface, a front surface, a bottom surface, a back surface, a right side surface, and a left side. Each side of the surface, and between the top and front, between the front and bottom, and between the bottom and back, respectively, has a hem seal that is a narrow linear seal, left and right of the top and bottom Both ends are folded into a V shape to form gussets, and the right and left sides are formed by forming vertical side seals together with the front and back left and right ends, and the back is from the height of the top surface It extends upward, the top surface bends at a right angle at the position of the back surface, and extends upward, both of which are fused at the extended tip to form an opening flap for the packaging bag. The take-out flap has a top cover at the tip. Lateral gusset bag having an opening portion in the top, characterized in that it comprises a resealing means at the bottom of the lower portion of the opening scheduled line Le portion.   The horizontal gusset bag having an opening at the top according to claim 1, wherein the resealing means is a synthetic resin fastener.   The horizontal gusset bag having an opening at the top according to claim 1, wherein the resealing means is a pressure-sensitive adhesive layer provided on both sides of the opposing surface.   The horizontal gusset bag provided with an opening at the top according to any one of claims 1 to 3, wherein the content is a tea bag.   A step of continuously supplying a belt-like laminate having at least a base material layer and a sealant layer, rounding the sealant layer so as to be inside, and forming a cylindrical shape, and continuously forming three hem seal portions , A step of forming a front surface, a bottom surface, and a back surface, a step of providing a re-sealing means on the inner surface of the cylinder of the laminate, a step of heat-sealing side end portions to form a top seal portion, a top seal portion Forming a U-shaped corner seal portion at a lower portion to form a take-out flap, cutting a central portion of the U-shaped corner seal portion to form a square columnar cylinder, Cutting the unsealed portion of the U-shaped corner seal portion, folding the left and right end portions of the top and bottom surfaces of the square columnar tube into a V-shape to form gusset portions; Forms a vertical side seal with the end After that, the contents are stored, then the other end of the top and bottom surfaces are folded into a V shape to form a gusset portion, and a vertical side seal portion is formed together with the other end portions of the front and back surfaces. The horizontal gusset bag provided with an opening in the top according to any one of claims 1 to 4, wherein each of the steps includes forming a right side surface and a left side surface and sealing the packaging bag. The manufacturing method of the package which was.