JP2008056248A - Gusset pouch with opening stopper and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gusset pouch with an opening stopper excellent in self-supporting stability. <P>SOLUTION: The gusset pouch with an opening stopper is made of a laminated body (10) of the outermost layer printing base material film layer (11) and a barrier sealant layer (19), and comprises a surface, a back surface, and two folding members (20, 30, and 40), and has a top section, a bottom heat-adhesive section (3 and 4), and heat-adhesive sections (5 and 5) for forming a bottom section on both ends of the bottom section heat-adhesive section (4). With regard to an adhesive layer (13) between the outermost layer printing base material film layer (11) and the barrier sealant layer (19) of a surface member (20), a bottom folding section (6b) of the bottom heat-adhesive section (4) and/or a bottom folding section (6a) at an upper part of the bottom heat-adhesive section (4) are wholly or partially formed on a non-adhesive section (7) when the pouch (1) is self-supported at the time of production of the pouch. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a gusset pouch with a stopper that is excellent in self-supporting stability when containing contents such as liquid, viscous material, powder, granule and the like, and a manufacturing method thereof.

  Conventionally, as a self-supporting pouch that can be stored and self-supported, a standing pouch, a square-bottom pouch, or a gusset-type pouch that becomes a square bottom when storing contents is well known. ing. All of these self-supporting pouches are configured such that a flat portion is formed at the bottom of the pouch, so that they can be placed in an upright state, compared to when they are placed flat at the time of sale. As the number of displays per unit space increases, the appeal to customers increases, and during use, the contents can be taken out by opening the opening in an upright state, so it is not transferred to another container. Since it can be used as it is, it is excellent in convenience, and is applied to various products.

  However, in the case of a gusset-type pouch in which a flat portion is formed at the bottom of the pouch when the contents are stored, the type and amount (capacity and weight) of the contents, or the gusset-type pouch Some types were difficult to stand by depending on the material composition.

  Therefore, as a method for improving the self-supporting property of the gusset-type pouch, a method of providing bending means in the triangular regions on the left and right sides of the bottom of the gusset pouch (see, for example, Patent Document 1), A method of providing a thermal ruled line on the planned line (for example, see Patent Document 2), a method of providing a folding assisting portion at the bottom of the gusset pouch (for example, see Patent Document 3), and the like have been proposed.

  As the existing techniques for improving the self-supporting property in this way, most of them are subjected to folding assistance by physical processing using bag making equipment. As described above, it is necessary to add a physical processing device to the bag making facility, and there is a problem that the production cost is increased because the facility becomes complicated and the bag making facility becomes expensive.

Prior art documents are shown below.
JP 2001-199452 A JP 2000-185740 A Japanese Patent No. 3460999

  The present invention is intended to solve such problems of the prior art, and is excellent in self-supporting stability when contents such as liquids, viscous materials, powders, granules, etc. are stored and made independent. Another object of the present invention is to provide a gusset pouch with a stopper and a method for producing the same.

  The present invention has been made to solve the above-described problems, and the invention according to claim 1 of the present invention includes at least an outermost layer printing substrate film layer (11) and a barrier sealant layer (19). The surface member (20) and the back surface member (30) are arranged so that the surfaces of the barrier and sealant layers (19) face each other, and the surface member (20) and the back surface member ( 30) between the two folding members (40) having a substantially V-shaped cross section so that the folding portions (41, 41) of the two folding members (40) face each other. ), The back surface member (30), and the folding member (40), and the inner surface of the four side end portions is thermally bonded to each other and has a cylindrical shape having side end heat bonding portions (2, 2). None, the upper and lower ends of the cylindrical body are thermally bonded to each other, and the top thermal bonding portion ( ) And the bottom thermal bonding part (4), and the inner surfaces from the bottom thermal bonding part (4) to the side edge thermal bonding part (2, 2) are formed by thermal bonding to each other. In the gusset pouch with a stopper having the bottom-formed thermal bonding part (5, 5), the outermost layer printing substrate film layer (11) and the barrier / sealant layer of the surface member (20) of the pouch (1) ( The adhesive layer (13) between the bottom part 19 and the bottom part is formed along the inner ridge line of the bottom thermal adhesive part (4) of the surface member (20) when the pouch (1) is self-supported during product production. The bottom bent portion (6a) formed at an arbitrary position above the portion (6b) and / or the bottom thermal bonding portion (4) is formed entirely or partially on the unbonded portion (7). It is a gusset pouch with a mouthpiece characterized by.

  The invention according to claim 2 of the present invention is the gusset pouch with plug according to claim 1, wherein the barrier sealant layer (19) includes at least a protective layer (14), a gas barrier layer (16), a sealant layer ( 18) A gusset pouch with a stopper, which is characterized by being sequentially laminated.

  The invention according to claim 3 of the present invention is a gusset pouch with a stopper, comprising at least a laminate (10) having an outermost printed substrate film layer (11) and a barrier sealant substrate layer (19). The outermost layer-printed substrate film layer (11) and the barrier / sealant layer (19) are laminated by a printing simultaneous pattern dry lamination method.

  The gusset pouch with a plug according to the present invention is composed of a laminate having at least an outermost printed substrate film layer and a barrier / sealant layer, and is arranged so that the barrier / sealant layer surfaces of the front surface member and the back surface member face each other. Then, two folding members having a substantially V-shaped cross section are inserted between the front surface member and the back surface member so that the folded portions of the two folding members face each other, and the front surface member, the back surface member, and the folding The inner surfaces of the four side end portions formed by the members are thermally bonded to form a cylindrical body having a side end thermal bonding portion, and the upper end and the lower end of the cylindrical shape are thermally bonded to each other to heat the ceiling. Forming a bonding portion and a bottom thermal bonding portion, and having a bottom forming thermal bonding portion formed by thermally bonding inner surfaces reaching the side edge thermal bonding portion obliquely upward from the bottom thermal bonding portion. For gusseted pouch with spout The adhesive layer between the outermost printed substrate film layer and the barrier sealant layer of the surface member of the pouch is along the inner ridge line of the bottom heat-bonded portion of the surface member when the pouch is made to stand by itself during product. The bottom bent portion formed in the above and / or the bottom bent portion formed at an arbitrary position above the bottom thermal bonding portion is formed in a completely or partially unbonded portion, so that liquid, viscous When contents such as bodies, powders, granules, etc. are stored and made self-supporting, they are excellent in self-supporting stability and improve store display.

  Embodiments of the present invention will be described in detail with reference to FIGS.

  FIG. 1 is a plan view seen from a surface member showing one embodiment of a gusset pouch with a plug according to the present invention, and FIG. 2 is a perspective view showing one embodiment of a gusset pouch with a plug according to the present invention. FIG. 3 is a side sectional view showing one embodiment of the layer structure of the laminate used in the gusset pouch with a stopper according to the present invention.

The gusset pouch with a stopper of one embodiment of the present invention is a gusset pouch with a stopper that is excellent in self-supporting stability when containing contents such as liquid, viscous material, powder, granule and the like. It is composed of a laminate (10) having at least an outermost printed substrate film layer (11) and a barrier sealant layer (19), and as shown in FIGS. 1 and 2, the surface member (20) Arranged so that the barrier / sealant layer (19) surfaces of the back member (30) face each other, two folded members having a substantially V-shaped cross section (between the front member (20) and the back member (30)) 40) is inserted so that the folding parts (41, 41) of the two folding members (40) face each other, and the front surface member (20), the back surface member (30), and the folding member (40) Thermally bond the inner surfaces of the four side edges to be formed to heat the side edges. A cylindrical body having a landing part (2, 2) is formed, and the upper and lower ends of the cylindrical body are thermally bonded to form the top thermal bonding part (3) and the bottom thermal bonding part (4), A bottom-forming heat-bonding portion (5, 5) formed by thermally bonding inner surfaces from the bottom heat-bonding portion (4) to the side end heat-bonding portions (2, 2) obliquely upward. In the gusset pouch with a stopper, the adhesive layer (13) between the outermost layer printing substrate film layer (11) and the barrier sealant layer (19) of the surface member (20) of the pouch (1) has The bottom bent portion (6b) formed along the inner ridge line of the bottom thermal bonding portion (4) of the surface member (20) when the pouch (1) is self-supported at the time of the product, and / or the bottom thermal bonding portion ( 4) The bottom bent part (6a) formed at an arbitrary position above 4) is wholly or partially A unbonded portion spout gusseted pouch formed in (7) (1).

  Thus, the bottom bent part (6b) formed along the inner ridge line of the bottom thermal bonding part (4) of the surface member (20) and / or any position above the bottom thermal bonding part (4) By making the bottom bent part (6a) formed in the part partially unbonded part (7) state, a part having a weaker repulsive force than the bonded part is made, and the independence is improved by bending at that part. It is a structure to let you.

  The shape of the unbonded portion (7) can be changed to various patterns in consideration of productivity. For example, patterns such as a perforated line shape, a straight line shape, and a chain line shape can be used. That is, the greatest effect of improving self-supporting is particularly weakening the repulsion at the time of bending of the bottom bent portion (6b) formed along the inner ridge line of the bottom thermal bonding portion (4) of the surface member (20). In particular, this part should be kept at least unbonded.

  Moreover, although it is possible to enlarge the area of an unbonded part (7), when the influence on an external appearance or bag-making aptitude is considered, linear shapes, such as a perforation line shape and a linear shape, are preferable.

  Next, since the method of laminating the outermost layer printing substrate film layer (11) and the barrier / sealant layer (19) needs to synchronize the printed picture plate and the adhesive plate, the pattern plate is printed in-line. Production facilities capable of dry lamination are required.

  Moreover, in order to raise the registration precision of a printed pattern and an unbonded part, a coating base material with a small expansion-contraction is good.

  Then, the material structure etc. of the laminated body (10) which produces the gusset pouch with a stopper concerning this invention are demonstrated in detail.

  As shown in FIG. 3, the laminate (10) has at least an outermost printed substrate film layer (11) and a barrier / sealant layer (19) laminated from the outer surface side via an adhesive layer (13). Formed.

  The barrier / sealant layer (19) has at least a protective layer (14), a gas barrier layer (16), and a sealant layer (18) laminated in this order.

Usually, the protective layer (14) and the gas barrier layer (16) can sufficiently function as the pouch (1) only by the outermost layer printing substrate film layer (11) and the sealant layer (18). It is provided when it is not possible.

  Examples of the function of the protective layer (14) include mechanical toughness, flex resistance, puncture resistance, impact resistance, wear resistance, cold resistance, heat resistance, and the like, and the function of the gas barrier layer (16). For example, gas barrier properties such as oxygen gas and water vapor, resistance to light, chemical resistance, and the like, and these functions required for the pouch (1) have a protective layer (14) and a gas barrier layer (16). To achieve.

  Examples of the material of the outermost layer printing substrate film layer (11) include polyesters such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polyethylene (PE), polypropylene ( PP), polyolefins such as polystyrene (PS), polyamides (PA) such as nylon-6 and nylon-66, polycarbonate (PC), polyacrylonitrile (PAN), polyimide (PI), polyvinyl chloride (PVC), polychlorinated Stretched or unstretched films such as vinylidene (PVDC), polyvinyl alcohol (PVA), ethylene-vinyl alcohol copolymer (EVOH), polyether sulfone (PES), polymethyl methacrylate (PMMA), nylon-6 / meta Siri diamine nylon 6 co-extruded film, a polypropylene / ethylene - may either vinyl alcohol copolymer co-extruded film, or be a composite film in which the laminated two or more films of these.

  Further, the thickness of the outermost layer printing substrate film layer (11) may be a thickness that can be kept to the minimum necessary with respect to strength, rigidity, etc. as a basic material. In addition, there is a disadvantage that the cost is reduced, and conversely, if it is too thin, the strength, rigidity and the like are lowered, which is not preferable. Therefore, it is preferably in the range of 10 to 50 μm, more preferably in the range of 15 to 30 μm. preferable.

  In the present invention, the outermost printed substrate film layer (11) preferably has a small expansion / contraction, for example, a polyethylene terephthalate (PET) film, in order to increase the registration accuracy of the printed pattern and the unbonded portion. If there is, it is preferably 25 μm or more.

  Next, as the material of the innermost sealant layer (18), any material can be used as long as it can be sealed by thermal bonding when the laminate (10) is used as a pouch. For example, low density polyethylene resin (LDPE), medium density Polyethylene resin (MDPE), high density polyethylene resin (HDPE), linear low density polyethylene resin (L-LDPE), polypropylene resin (PP), ethylene-propylene copolymer (EP), ethylene-α olefin copolymer , Ethylene-acrylic acid copolymer (EAA), ethylene-methacrylic acid copolymer (EMAA), ethylene-methacrylic acid ester copolymer, ethylene-acrylic acid ester copolymer, ionomer resin, ethylene-vinyl acetate copolymer It is possible to use a resin such as coalescence (EVA) or a film obtained by forming a film of these resins. Kill.

  The thickness of the sealant layer (18) is preferably in the range of 15 to 200 μm, more preferably in the range of 30 to 170 μm, in view of physical properties such as strength and workability.

  Next, a beautiful printed layer (12) is applied to the outermost layer printed substrate film layer (11) for the purpose of improving the sales promotion effect of the product. The printed layer (12) Printing is possible on either the front or back side of the outer layer printing substrate film layer (11). However, as in the case of printing on a general plastic film pouch, the outermost printing substrate film layer (11) can be printed in consideration of the friction resistance and weather resistance of the ink. It is preferable to provide a printing layer (12) on the inner surface of the outer layer printing substrate film layer (11).

  The printing ink for forming the printing layer (12) includes a color material composed of pigments or dyes that impart color to the ink, and a resin that adheres to the printed material while dispersing and holding the color material in fine particles. A vehicle composed of a solvent that stably dissolves the resin, maintains dispersibility of the pigment and dye, fluidity of the ink, and can transfer an appropriate amount of ink from the printing plate, and further the coloring material For the purpose of improving dispersibility, color developability, preventing precipitation, and improving fluidity, it is formed of an auxiliary agent such as a surfactant. In particular, the colorant is preferably a pigment having good weather resistance.

  The printing method for providing the printing layer (12) is not particularly limited as long as it is a printing method capable of printing on the outermost layer printing substrate film layer (11), but copper plating is performed on the surface of an iron cylinder (cylinder). Forming a base, providing a release layer on the copper-plated surface, further copper-plating, and creating a recess (cell) by engraving or corrosion method on the polished copper surface of the surface, A gravure printing method is preferred in which the printing ink in the cell is transferred to the outermost layer printing substrate film layer (11), and even a tone can be printed in a colorful manner and has a high appealing effect.

  In addition, when printing on the outermost layer printing substrate film layer (11), if necessary for improving the adhesion between the outermost layer printing substrate film layer (11) and the printing ink, the outermost layer printing substrate film The surface of the film layer (11) on which the printing layer (12) is provided is preferably subjected to pretreatment such as ozone treatment or corona treatment, and may further be coated with an anchor coating agent or the like.

  Examples of the material of the protective layer (14) include polyesters such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polybutylene terephthalate (PBT), polyethylene (PE), polypropylene (PP), and polystyrene ( Polyolefins such as PS), polyamides such as nylon-6 and nylon-66 (PA), polycarbonates (PC), polyacrylonitrile (PAN), polyimides (PI), polyvinyl chloride (PVC), etc. Can be used.

  As the material of the gas barrier layer (16), a gas barrier film in which a gas barrier layer is provided on a gas barrier resin film or a support film is used. For example, ethylene-vinyl alcohol copolymer (EVOH) film, polyvinyl alcohol (PVA) film, ethylene-vinyl acetate copolymer (EVA) saponified film, polyethylene terephthalate (PET), polyamide (PA), polypropylene (PP) film coated with polyvinylidene chloride, aluminum foil, aluminum deposited layer, a film provided with a deposited thin film layer of inorganic oxide (silicon oxide, aluminum oxide, etc.) or one of these films Multi-layered films can be used in combination, but among these, aluminum foil, aluminum film on the support film, and vapor deposited thin film layers of inorganic oxides (such as silicon oxide and aluminum oxide) that can be easily disposed of. Gas barrier fee with Although beam is preferred, especially in light of the recent environmental problems, inorganic oxide vapor deposition film disposal after use by depositing easy the inorganic oxide is frequently used more preferably.

  The support film of the inorganic oxide vapor-deposited film is not particularly limited, but a single film and various laminated films can be used in consideration of processability and the like.

  For example, polyesters such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polyolefins such as polypropylene (PP) and polystyrene (PS), polyamides such as nylon-6 and nylon-66 Non-stretched or stretched films such as (PA), polycarbonate (PC), polyacrylonitrile (PAN), and polyimide (PI).

Among these, from the viewpoint of tearability, strength, cost, etc., as described above, a biaxially stretched polyethylene terephthalate film (OPET) or a biaxially stretched polyamide film (ON) arbitrarily stretched in the biaxial direction is used. It is preferable.

  As the inorganic oxide vapor-deposited thin film layer (not shown), it is basically possible to use metal oxides such as silicon, aluminum, magnesium, calcium, potassium, tin, sodium, boron, Examples thereof include oxides such as titanium, lead, zirconium, and yttrium, or a mixture thereof.

  In general, it is preferable to use silicon oxide or aluminum oxide from the viewpoint of transparency, physical properties, and productivity.

  As a method of forming such an inorganic oxide vapor-deposited thin film layer, a vacuum vapor deposition method, a sputtering method, or the like can be used, but a vacuum vapor deposition method is preferable in consideration of productivity, production cost, and the like.

  Next, the method of laminating the outermost printed substrate film layer (11) and the barrier / sealant layer (19) through the adhesive layer (13) requires that the printed picture plate and the adhesive plate be synchronized. For this reason, the pattern plate dry lamination method is used in printing and in-line.

  Further, a method of sequentially laminating the protective layer (14), the gas barrier layer (16), and the sealant layer (18) constituting the barrier / sealant layer (19) via the adhesive layers (15, 17), For example, known methods such as a dry lamination method, a non-solvent dry lamination method, an extrusion lamination method, and a sandwich lamination method using the extrusion lamination method can be used. The method is preferred.

  Examples of the adhesive used for the adhesive layers (13, 15, 17) include polyurethane, polyacrylic, polyester, epoxy, polyvinyl acetate, cellulose, and other dry laminate adhesives. Can be used.

  Next, the plug used for the gusset pouch (1) with a plug according to the present invention will be described. First, as a method for forming a plug (a plug without a lid), it can be formed by a well-known injection molding method (injection molding method). The material used for the plug (the plug without the lid) may be any material that can be melted by heat and fused with the resin used for the sealant layer (18) of the pouch (1). It is necessary to select depending on the resin used for the layer (18). For example, a low density polyethylene resin (LDPE), a medium density polyethylene resin (MDPE), a high density polyethylene resin (HDPE), and a linear low density polyethylene resin (L -LDPE), polypropylene resin (PP), ethylene-propylene copolymer (EP), ethylene-α olefin copolymer, ethylene-acrylic acid copolymer (EAA), ethylene-methacrylic acid copolymer (EMAA), Ethylene-methacrylic acid ester copolymer, ethylene-acrylic acid ester copolymer, ionomer resin, ethylene-vinegar It may be a resin such as vinyl copolymer (EVA). Moreover, the said plug (plug without a cover body) may be colored with a pigment etc. as needed.

  Further, a lid that is screwed to a screw portion provided on the outer periphery of the gusset pouch (1) of the mouthpiece (a mouthpiece without a lid) is a well-known injection molding method (injection molding method). Can be formed. As a material used for this, for example, a low density polyethylene resin (LDPE), a medium density polyethylene resin (MDPE), a high density polyethylene resin (HDPE), a linear low density polyethylene resin (L-LDPE), a polypropylene resin (PP ), Polystyrene resin (PS), ethylene-propylene copolymer (EP), acrylonitrile-butadiene-styrene copolymer (ABS), or other semi-rigid or rigid synthetic resin. Of course, the lid may be colored with a pigment or the like as required. Further, the lid body may be provided with a pill-proof function as necessary.

  Hereinafter, the gusset pouch with a stopper (1) according to the present invention will be described in more detail with specific examples, but is not limited thereto.

<Example 1>
The laminated body (10) used for the front surface member (20), the back surface member (30), and the two folding members (40) forming the gusset pouch (1) with a stopper according to the present invention is as shown in FIG. The outermost layer printing substrate film layer (11) is a 25 μm thick biaxially stretched polyethylene terephthalate film (OPET) (trade name: E5100, manufactured by Toyobo Co., Ltd.), and the protective layer (14). A 15 μm thick biaxially stretched nylon film (ONY) (product name: ONMB, manufactured by Unitika Ltd.) is used, and a 9 μm thick aluminum foil (manufactured by Tokai Aluminum Foil Co., Ltd.) is used for the gas barrier layer (16). As the sealant layer (18), a 50 μm-thick linear low density polyethylene film (L-LDPE) (manufactured by Tamapoly Co., Ltd., trade name: UB105TC) was used.

  First, the biaxially stretched nylon film (ONY) and the aluminum foil were dry-laminated using a two-component curable polyurethane adhesive. Subsequently, the linear low density polyethylene film (L-LDPE) is dry-laminated using a two-component curable polyurethane adhesive, and a biaxially stretched nylon film (ONY) / 2-component curable polyurethane adhesive. A laminate made of / aluminum foil / 2-component curable polyurethane adhesive / linear low density polyethylene film (L-LDPE) was prepared.

  Next, the biaxially stretched nylon terephthalate film (OPET) is subjected to gravure printing and simultaneously a two-component curable polyurethane adhesive is subjected to pattern printing with a gravure plate. Biaxially stretched nylon film (ONY) of laminate composed of film (ONY) / 2-component curable polyurethane adhesive / aluminum foil / two-component curable polyurethane adhesive / linear low density polyethylene film (L-LDPE) 1) and a bottom bent portion (6b) formed along the inner ridge line of the bottom thermal bonding portion (4) of the surface member (20), and the bottom thermal bonding, as shown in FIG. Roll shape in which the portion corresponding to the bottom bent portion (6a) formed at an arbitrary position above the portion (4) is in an unbonded portion (7) state To obtain a laminated body (10).

  Next, the laminated body (10) is slit to an arbitrary width for the front surface member (20), the back surface member (30) and the two folding members (40), and is attached to a bag making machine. A gusset pouch (1) with a plug (8) consisting of

  The gusset pouch with a spigot (1) thus produced according to the present invention was filled with jelly-like contents and confirmed to be self-supporting. As a result, the portion corresponding to the bottom bent portion (6a, 6b) described above was obtained. It bent smoothly and confirmed stable independence.

It is the top view seen from the surface member side which shows one Example of the gusset pouch with a stopper concerning this invention. It is a perspective view which shows one Example of the gusset pouch with a spigot concerning this invention. It is a sectional side view which shows one Example of the laminated constitution of the laminated body used for the gusset pouch with a stopper concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Gusset pouch with a mouthpiece 2 ... Side edge part heat-bonding part 3 ... Top part heat-bonding part 4 ... Bottom heat-bonding part 5 ... Thermal bonding part 6a ... for bottom part formation Bottom bent part 6b ... Bottom bent part 7 ... Non-bonded part 8 ... Plug 10 ... Laminate 11 ... Outermost layer printing substrate film layer 12 ... Print layer 13 ... Adhesive layer 14 ... Protective layer 15 ... Adhesive layer 16 ... Gas barrier layer 17 ... Adhesive layer 18 ... Sealant layer 19 ... Barrier / sealant layer 20 ... Surface member 30 ... Back member 40 ... Folding member 41 ... Folding part

Claims (3)

  It consists of a laminate having at least the outermost printed substrate film layer and the barrier / sealant layer, and is arranged so that the barrier / sealant layer surfaces of the front member and the back member face each other, and between the front member and the back member Four side end portions formed by the front surface member, the back surface member, and the folding member are inserted into the two folding members having a substantially V-shaped cross section so that the folding portions of the two folding members face each other. The inner surfaces of the cylinders are thermally bonded to form a cylindrical body having side end thermal bonding portions, and the upper and lower ends of the cylindrical body are thermally bonded to form a top thermal bonding portion and a bottom thermal bonding portion, respectively. In the gusset pouch with a stopper, the inner surface from the bottom thermal bonding portion to the side end thermal bonding portion obliquely upward and having the bottom forming thermal bonding portion is formed. Outermost layer printing The adhesive layer between the material film layer and the barrier / sealant layer includes a bottom bent portion formed along an inner ridge line of the bottom thermal bonding portion of the surface member when the pouch is self-supported during product, and / or the A gusset pouch with a cap, wherein a bottom bent portion formed at an arbitrary position above the bottom thermal bonding portion is formed entirely or partially on an unbonded portion.   The gusset pouch with a spigot according to claim 1, wherein the barrier / sealant layer is formed by sequentially laminating at least a protective layer, a gas barrier layer, and a sealant layer.   At least a plugged gusset pouch comprising a laminate having an outermost layer printing substrate film layer and a barrier / sealant layer, wherein the outermost layer printing substrate film layer and the barrier / sealant layer are printed by a simultaneous pattern dry lamination method. A method for producing a gusset pouch with a spigot, characterized by being laminated.

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