JP5303996B2 - Pouch container - Google Patents

Description

  The present invention relates to a pouch container in which a content outlet is integrally formed on the outer periphery of a gusset-type bag.

Conventionally, pouch containers used in the field of food such as jelly-like drinks mainly form a bag body with a pair of barrel sheets facing each other and a gusset sheet that is foldably interposed between the lower edge portions of the barrel sheets. In many cases, a separate spout (drinking mouth) is attached to the outer periphery of the bag (see, for example, Patent Documents 1 and 2).
On the other hand, since the pouch container is often disposable, in order to simplify the structure, a part of the pouch container is extended to the outer peripheral side of the outer periphery of the bag body. It is also possible to form (for example, refer to Patent Document 3) and use the spout as the drinking mouth.
Japanese Patent Laid-Open No. 2006-347566 JP 2006-232300 A JP 2006-44714 A

By the way, also from the viewpoint of environmental protection in recent years, it is desirable to simplify the configuration of the pouch container as described above.
Further, in the latter configuration, there is usually a heat seal flange for bonding the body sheets around the spout. When opening the spout, the tip side is torn from the heat seal flange on one side of the spout. At this time, since the heat seal flange on the tear end point side is cut off, there is a possibility that the corner (edge) hits the lips when the spout is added.
Accordingly, an object of the present invention is to further simplify the configuration of the pouch container integrally formed with the content outlet on the outer periphery of the gusset type bag body, and to eliminate the edge feeling after opening the outlet. .

As a means for solving the above-mentioned problems, the invention described in claim 1 mainly forms a bag body from a pair of trunk sheets facing each other and a gusset sheet that is foldably interposed between one edge of each of the trunk sheets. In the pouch container in which a part of the bag body is extended to the outer peripheral side to form a spout for contents, and the bag body has the gusset sheet between one edge portion of each trunk sheet. Each of the trunk sheets is formed by bonding the outer peripheral portions excluding the one edge portion as heat seal flanges to form the bag body, and each of the body members in the bag body. On the end side of one edge of the trunk sheet, the one edge extends together with the gusset sheet to the outer peripheral side of the bag body to form the spout, and the gusset sheet is on the front end of the spout. The amount of folding decreases as it goes Allowed, and the watch enough away from the distal end side of the outlet increases the folding amount, the folding amount near the tip of the spout to 0, the position of the folding amount of said spout is approximately 0, the It intersects with the cutting line when opening the front end side of the spout .

According to the invention described in claim 1, a gusset-type bag body composed of a pair of trunk sheets and gusset sheets is formed by only folding and bonding one sheet member as appropriate, and By integrally forming the spout to be formed on the outer periphery of the bag body, the configuration of the pouch container and the manufacturing process can be simplified.
Further, by forming a spout serving as a drinking mouth for the contents by extending one edge portion of each trunk sheet that is connected to the gusset sheet to the outer peripheral side together with the gusset sheet, the part on the one edge side of the spout The heat seal flange can be eliminated. The one edge portion is not limited to a single linear shape, but includes a bent shape or a curved shape. That is, if the trunk sheet is a polygonal shape in a plan view, it includes an edge portion extending over two or more sides and an edge portion curved in a plan view.
The spout is opened by tearing the tip side starting from the notch provided in the heat seal flange on the side opposite to the one edge, but there is no heat seal flange on the tear end point side (one edge side) Therefore, even after opening the spout, the edge of the heat seal flange does not occur around the spout, and the edge of the heat seal flange can be prevented from hitting the lips when the spout (spout) is added.
Further, since there is no heat seal flange at one edge of each trunk sheet, even when the pouch container is grasped to pour out the contents, the biting of the heat seal flange into the hand can be suppressed.
And by reducing the folding amount of the gusset sheet toward the tip side of the spout, the total width (deployment width) of the gusset sheet on the tip side of the spout is reduced, and when the tip side of the spout is cut Since the gusset sheet can be easily cut, the opening of the spout can be improved.

According to the first aspect of the present invention, the entire width (deployment width) of the gusset sheet at the tip end side of the spout becomes almost zero, and the gusset sheet can be cut more easily when the tip side of the spout is cut. The opening of the spout can be improved.

According to the first aspect of the present invention, as the distance from the tip end side of the spout becomes larger, the entire width of the gusset sheet can be increased and the space between the one edge portions of the respective trunk sheets can be increased, thereby ensuring the internal capacity of the entire container.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 and 2, the pouch container 1 of this embodiment is foldably interposed between a pair of front and rear trunk sheets 2 and 3 facing each other and a lower edge portion 7 of the front and rear trunk sheets 2 and 3. A gusset type (with gusset) bag body 5 is mainly formed from the gusset sheet 4 to be formed, and the portion is extended to the outer peripheral side (left side) of the bag body 5 at the outer peripheral portion on the lower left side of the bag body 5. A slightly tapered nozzle-shaped spout 6 is formed so as to exit. In the following description, front and rear, left and right, and top and bottom are used with reference to the directions shown in FIGS.

Here, the material structure of the laminated plastic film (henceforth the laminated body 30) which has the adhesiveness and flexibility used for the pouch container 1 is demonstrated.
As shown in FIG. 6, the laminate 30 is formed by laminating at least the outermost printed base film layer 31 and the barrier / sealant layer 39 via the adhesive layer 33 from the outer surface side.
The barrier / sealant layer 39 has a structure in which at least a protective layer 34, a gas barrier layer 36, and a sealant layer 38 are sequentially laminated.
The protective layer 34 and the gas barrier layer 36 are usually provided when the outermost printed base film layer 31 and the sealant layer 38 alone cannot sufficiently function as the pouch container 1.

  Examples of the function of the protective layer 34 include mechanical toughness, bending resistance, puncture resistance, impact resistance, wear resistance, cold resistance, heat resistance, and the like. Examples of the function of the gas barrier layer 36 include The gas barrier properties such as oxygen gas and water vapor, the resistance to light, chemical resistance, etc. are achieved by providing these functions required as the pouch container 1 as the protective layer 34 and the gas barrier layer 36. .

  Examples of the material of the outermost printed substrate film layer 31 include polyesters such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polybutylene terephthalate (PBT), polyethylene (PE), polypropylene (PP), and polystyrene. Polyolefin (PS), polyamide (PA) such as nylon-6, nylon-66, polycarbonate (PC), polyacrylonitrile (PAN), polyimide (PI), polyvinyl chloride (PVC), polyvinylidene chloride (PVDC) , Stretched or unstretched films such as polyvinyl alcohol (PVA), ethylene-vinyl alcohol copolymer (EVOH), polyether sulfone (PES), polymethyl methacrylate (PMMA), nylon-6 / metaxy 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 these two or more films.

The thickness of the outermost layer printing substrate film layer 31 may be a thickness that can be kept to the minimum necessary with respect to strength, rigidity, etc. as a basic material. On the other hand, if it is too thin, the strength, rigidity, etc. are undesirably lowered. Therefore, it is preferably in the range of 10 to 50 μm, more preferably in the range of 15 to 30 μm.
Further, in order to increase the accuracy of the printing layer 32 described later, the outermost printed substrate film layer 31 is preferably small in expansion and contraction. For example, if it is a polyethylene terephthalate (PET) film, it is preferably 25 μm or more.

The material of the innermost sealant layer 38 may be any material that can be sealed by thermal bonding when the laminate 30 is used as a pouch. For example, a low density polyethylene resin (LDPE), a medium density polyethylene resin (MDPE), a high 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 Resins such as coalescence (EAA), ethylene-methacrylic acid copolymer (EMAA), ethylene-methacrylic acid ester copolymer, ethylene-acrylic acid ester copolymer, ionomer resin, ethylene-vinyl acetate copolymer (EVA) Alternatively, a film obtained by forming these resins into a film can be used.
The thickness of the sealant layer 38 is preferably in the range of 15 to 200 μm, and more preferably in the range of 30 to 170 μm, in view of physical properties such as strength and workability.

  The outermost layer printing substrate film layer 31 is provided with a beautiful print layer 32 for the purpose of improving the sales promotion effect of the product. The printing layer 32 can be printed on either the front or back side of the outermost layer printing substrate film layer 31. However, as in the case of printing on a general plastic film pouch, the ink friction and weather resistance are taken into consideration. The printing layer 32 is preferably provided on the inner surface of the outermost layer printing substrate film layer 31.

  The printing ink for forming the printing layer 32 includes a color material composed of pigments or dyes that give color to the ink, a resin that adheres to the printed material while dispersing and holding the color material in fine particles, and the resin A vehicle composed of a solvent that stably dissolves pigments and dyes, maintains the fluidity of ink, and transfers the appropriate amount of ink from the printing plate. For the purpose of improving the property, preventing precipitation, and improving the fluidity, the pigment is formed from 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 32 is not particularly limited as long as it is a printing method capable of printing on the outermost layer printing substrate film layer 31, but a steel plate is applied to the surface of an iron cylinder (cylinder) to form a base, A release layer is provided on the copper-plated surface, and a copper-plated copper surface with a mirror-polished surface is used to create a recess (cell) by engraving or corrosion, and the printing ink in the iron cell is the outermost layer. By transferring to the printing substrate film layer 31, a gravure printing method that can print colorfully even with a tone and has a high appealing effect is preferable.

  In addition, when printing on the outermost layer printing substrate film layer 31, if necessary to improve the adhesion between the outermost layer printing substrate film layer 31 and the printing ink, the outermost layer printing substrate film layer 31 is used. The surface on which the printing layer 32 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 34 include polyesters such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polybutylene terephthalate (PBT), polyethylene (PE), polypropylene (PP), and polystyrene (PS). Using stretched or unstretched films such as polyamide (PA) such as polyolefin, nylon-6, nylon-66, polycarbonate (PC), polyacrylonitrile (PAN), polyimide (PI), polyvinyl chloride (PVC), etc. it can.

As the material of the gas barrier layer 36, a gas barrier film in which the gas barrier layer 36 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 a kind of these films A laminated film combining the above can be used.
Among these, a gas barrier film provided with an aluminum foil, an aluminum vapor deposition layer on a support film, and a vapor deposition thin film layer of an inorganic oxide (such as silicon oxide or aluminum oxide) that can be easily disposed of is preferable. In view of the above, an inorganic oxide vapor-deposited film in which the inorganic oxide that can be easily disposed of after use is vapor-deposited is more preferably used.

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 (PA ), Polycarbonate (PC), polyacrylonitrile (PAN), polyimide (PI) and the like.
Among these, it is preferable to use a biaxially stretched polyethylene terephthalate film (OPET) or a biaxially stretched polyamide film (ON) arbitrarily stretched in the biaxial direction from the viewpoint of tearability, strength, cost, and the like.

As an inorganic oxide vapor-deposited thin film layer (not shown), it is basically possible to use a metal oxide, for example, silicon, aluminum, magnesium, calcium, potassium, tin, sodium, boron, titanium. In addition, oxides such as lead, zirconium, and yttrium or a mixture thereof can be used. In general, silicon oxide and aluminum oxide are preferably used from the viewpoint of transparency, physical properties, and productivity.
As a method for forming such an inorganic oxide vapor-deposited thin film layer, a vacuum vapor deposition method, a sputtering method, or the like can be used. However, in view of productivity, production cost, etc., the vacuum vapor deposition method is preferable.

In the method of laminating the outermost layer printing substrate film layer 31 and the barrier / sealant layer 39 via the adhesive layer 33, it is necessary to synchronize the printed picture plate and the adhesive plate. Dry lamination method is used.
The protective layer 34, the gas barrier layer 36, and the sealant layer 38 constituting the barrier / sealant layer 39 are sequentially laminated via the adhesive layers 35 and 37, for example, a dry lamination method or a non-solvent dry lamination method. Known methods such as a method, an extrusion lamination method, and a sandwich lamination method using the extrusion lamination method can be used. Among them, a dry lamination method having excellent adhesive strength is preferable.

  As the adhesive used for the adhesive layers 33, 35, and 37, for example, polyurethane, polyacryl, polyester, epoxy, polyvinyl acetate, cellulose, and other dry laminate adhesives are used. be able to.

  In addition, the laminated body 30 of a present Example uses the 25-micrometer-thick biaxially-stretched polyethylene terephthalate film (OPET) (Toyobo Co., Ltd. make, brand name: E5100) for the outermost layer printing base film layer 31. The protective layer 34 is made of 15 μm thick biaxially stretched nylon film (ONY) (trade name: ONMB, manufactured by Unitika Ltd.), and the gas barrier layer 36 is made of 9 μm thick aluminum foil (Tokai aluminum foil). Co., Ltd.) was used, and a 50 μm-thick linear low density polyethylene film (L-LDPE) (manufactured by Tamapoly Co., Ltd., trade name: UB105TC) was used for the sealant layer 38.

  The biaxially stretched nylon film (ONY) and the aluminum foil are dry-laminated using a two-component curable polyurethane adhesive, and then the linear low-density polyethylene film (L-LDPE) is two-component. Dry lamination using curable polyurethane adhesive, biaxially stretched nylon film (ONY) / two-component curable polyurethane adhesive / aluminum foil / two-component curable polyurethane adhesive / linear low density polyethylene A laminate composed of a film (L-LDPE) was produced.

  The biaxially stretched polyethylene terephthalate film (OPET) is subjected to pattern gravure printing and at the same time pattern printing is performed with a two-component curable polyurethane adhesive using a gravure plate. ONY) / two-component curable polyurethane adhesive / aluminum foil / two-component curable polyurethane adhesive / linear low density polyethylene film (L-one LDPE) biaxially oriented nylon film (ONY) Surface and dry lamination were performed.

  Referring to FIGS. 1 and 2 again, the front and rear torso sheets 2 and 3 are formed into the same parallelogram shape in plan view, and in FIG. 1, the linear lower edge 7 is inclined upward to the right. Be placed. Between the lower edge portions 7 of the front and rear trunk sheets 2 and 3, there is a gusset sheet 4 that is folded upward (folded on the inner peripheral side of the bag body 5) upward (inner peripheral side of the bag body 5). It is installed. When the contents of the gusset sheet 4 are filled in the pouch container 1, the gusset sheet 4 is appropriately unfolded from the two-folded state, and the space between the lower edge portions 7 of the front and rear trunk sheets 2 and 3 is widened to secure the inner capacity of the pouch container 1. In addition, the pouch container 1 can be self-supported in a state where the lower edges of the front and rear trunk sheets 2 and 3 are grounded.

  Referring also to FIG. 3, the spout 6 is located on the left end side of the lower edge portion 7 of the bag body 5 and the lower edge portion 7 and its vicinity (upper adjacent portion) together with the gusset sheet 4 (bag body). 5 is extended to the outer peripheral side). In other words, the spout 6 is formed on the extension of the lower edge portion 7, and one side portion (lower portion) of the extension portion of the lower edge portion 7 is formed. The inner space of the bag body 5 communicates with the inside of the spout 6, and the inner space of the bag body 5 communicates with the outside through the spout 6 by cutting off the protruding tip side (left side) of the spout 6. The contents in the bag body 5 can be poured out of the bag body 5.

  Here, referring also to FIG. 5, the bag body 5 is formed by appropriately folding and thermally bonding one sheet member 10 in which the lower edge portions 7 of the front and rear trunk sheets 2 and 3 are connected via the gusset sheet 4. By doing so, it is formed into a bag shape. In the figure, lines L1 and L2 indicate fold lines that serve as boundaries between the front and rear trunk sheets 2 and 3 and the gusset sheet 4, and a line L3 indicates a fold line when the gusset sheet 4 is folded in half. Lower edge portions 7 of the front and rear trunk sheets 2 and 3 are provided along the folding lines L1 and L2, respectively. Note that the fold line L3 extends to the left and right at the upper and lower centers of the sheet member 10 in FIG. 5, and each configuration of the sheet member 10 is provided symmetrically with respect to the fold line L3.

  The lower edge portions 7 (and the fold lines L1 and L2) of the front and rear trunk sheets 2 and 3 are provided so as to be inclined so as to increase the distance between them toward the right side. The gusset sheet 4 arranged in the unfolded state between the lower edge portions 7 of the front and rear trunk sheets 2 and 3 is such that the width in the direction orthogonal to the left and right direction (the width across the folding lines L1 and L2) increases toward the right side. Is provided. On the outer periphery of the sheet member 10, heat seal flanges (thermal adhesive flanges, hereinafter sometimes referred to as seal flanges at the ends) 11 to 16 when forming the bag body 5 are provided over the entire circumference.

The left and right edge portions extending in the vertical direction of the front and rear trunk sheets 2 and 3 are respectively provided with trunk left and right seal flanges 11 and 12 along the upper and lower waist sheets 2 and 3, respectively. A trunk seal flange 13 is provided along this.
Further, the right edge of the gusset sheet 4 is inclined so that the upper and lower parts in FIG. 5 are line symmetric with respect to the right edge of the front and rear trunk sheets 2 and 3 and the folding lines L1 and L2, respectively. In the state, it has a V-shape projecting rightward, and a gusset right seal flange 14 is provided along the right edge. The lower end portions of the front and rear trunk right seal flanges 12 are connected to each other via a gusset right seal flange 14.

  On the other hand, the front and rear trunk left seal flanges 11 are bent obliquely to the lower left at a position spaced apart from the lower edge 7 by a predetermined amount, and the projecting upper seal flange 15 serves as the upper edge of the spout 6. Configure. A protruding end seal flange 16 is provided on an edge (tip edge) extending vertically at the protruding tip of the spout 6. The left end portion of the protruding upper seal flange 15 is connected to the right side of the upper end portion of the protruding end seal flange 16.

  Here, the gusset sheet 4 is formed so that its full width (deployed width) is narrowed toward the left side (toward the tip end side of the spout 6), and in this embodiment, the left edge of the protruding end seal flange 16 ( When the inner edge is reached, the width is set to 0 (that is, the gusset sheet 4 is terminated). The lower end portions of the front and rear protruding end seal flanges 16 are directly connected to each other.

Next, a procedure for setting the sheet member 10 as the pouch container 1 with the surface of the sheet member 10 in FIG.
First, the front and rear torso sheets 2 and 3 are erected at the base ends of the respective folding lines L1 and L2 on the lower edge 7 side so that the inner surface sides thereof face each other, and the gusset sheet 4 is folded in an upwardly convex manner. This is sandwiched between the lower parts of the front and rear trunk sheets 2 and 3.

  At this time, the trunk right and left seal flanges 11 and 12, the trunk upper seal flange 13, the projecting upper seal flange 15, and the projecting end seal flange 16 face each other between the front and rear trunk sheets 2 and 3. Further, the gusset right seal flange 14 is sandwiched between lower portions of the front and rear trunk right seal flanges 12 in the folded state.

In this state, the trunk right and left seal flanges 11 and 12, the trunk upper seal flange 13, the projecting upper seal flange 15 and the projecting end seal flange 16 are heat-sealed between the front and rear trunk sheets 2 and 3, respectively (thermal bonding). ). At this time, the bifurcated trunk right seal flange 12 is bonded between lower portions of the front and rear trunk right seal flanges 12.
Thereby, the bag body 5 which has a gusset between the lower edge portions 7 of the front and rear trunk sheets 2 and 3, and the spout 6 projecting to the lower left side thereof are formed into the pouch container 1.

  The pouch container 1 is sealed in a state in which the contents are filled by, for example, opening the part as a post-process with heat sealing processing for the upper seal flange 13 and closing the part after introducing the contents from the opening. Pouch product. The consumer of this pouch product opens the pouch container 1 by cutting the tip end side of the spout 6 and holds the pouch container 1 with the spout 6 in the mouth to grasp the pouch 6. You can eat and drink the contents.

  Referring to FIGS. 1, 4, and 5, the outer peripheral shape on the upper left side of the protruding end seal flange 16 is provided to be inclined so as to be positioned on the right side as it is on the upper side. Further, a knob portion 21 having a semicircular shape in a plan view is projected from the upper end portion of the protruding end seal flange 16. For example, a V-shaped cut K in a plan view is formed on the outer peripheral side of the protruding upper seal flange 15 so as to be adjacent to the right side of the knob portion 21.

  The notch K is located slightly on the left side (base end side of the spout 6) from the left and right positions of the left edge (inner peripheral edge) of the protruding end seal flange 16. A line extending vertically at the same left and right position as the cut K is a cutting line L4 when the tip side is cut off when the spout 6 is opened. That is, when the spout 6 is opened, the protruding end seal flange 16 that closes the front end of the spout 6 is obtained by pinching the knob 21 and tearing the front end of the spout 6 along the cutting line L4 from the notch K. The periphery is excised, the tip of the spout 6 is opened, and the contents can be poured out.

  The folded top portion 8 which is the upper edge portion of the gusset sheet 4 in the two-folded state is provided in a straight line that rises to the right and forms a steeper slope than the lower edge portion 7 of the front and rear trunk sheets 2, 3. Terminate at the left and right positions of the left edge of the protruding end seal flange 16. That is, the gusset sheet 4 decreases its folding amount H (for example, the width in the direction perpendicular to the lower edges of the front and rear trunk sheets 2 and 3, as shown in FIG. 1) toward the tip side (left side) of the spout 6. At the tip of the spout 6, the fold amount H is set to 0, and the fold amount H is increased as the distance from the tip side of the spout 6 is increased (toward the right side).

  As a result, the folding amount H (deployment width) of the gusset sheet 4 on the cutting line L4 becomes substantially zero (see FIG. 5), and the gusset is also used when the tip side of the spout 6 is torn off from the notch K. The sheet 4 can be easily cut off, and the opening of the spout 6 can be improved. Further, since the folding amount H of the gusset sheet 4 increases toward the side opposite to the spout 6, the internal capacity of the entire pouch container 1 is ensured satisfactorily. In addition, the pouch container 1 is widened between the lower edge portions 7 of the front and rear trunk sheets 2 and 3 toward the right side, and the lower edge of the front and rear trunk sheets 2 and 3 is installed (lower rightward with respect to FIG. 1). Can stand on its own (in an inclined state).

  Around the spout 6, there is a protruding upper seal flange 15 only on the upper side thereof. Since this protruding upper seal flange 15 is provided with a cut K for cutting, the front end side of the spout 6 is cut off. Even in this case, there is no uncut corner (edge).

  As described above, the pouch container 1 in the above embodiment includes a pair of trunk sheets 2 and 3 that face each other, and a gusset sheet 4 that is foldably interposed between the lower edge portions 7 of the trunk sheets 2 and 3. Is formed mainly on the outer periphery of the bag body 5, and a part of the bag body 5 is extended to the outer peripheral side to form a spout 6 for the contents. 2 and 3 comprises a single sheet member 10 connected between the lower edge portions 7 via the gusset sheet 4, and each of the trunk sheets 2, 3 has a heat seal flange at the outer peripheral portion excluding the lower edge portion 7. The bag body 5 is formed by adhering to each other as described above, and the lower edge portion 7 together with the gusset sheet 4 is disposed on the end side of the lower edge portion 7 of each of the trunk sheets 2 and 3 in the bag body 5. The spout 6 is formed by extending to the outer peripheral side of the bag body 5, and the gusset Sheet 4 is intended to reduce the folding amount H increases toward the distal end side of the spout 6.

According to this configuration, the gusset-type bag body 5 composed of the pair of body sheets 2 and 3 and the gusset sheet 4 is formed only by appropriately folding and bonding one sheet member 10, and the drinking mouth for the contents By forming the spout 6 to be integrated with the outer periphery of the bag body 5, the configuration of the pouch container 1 and the manufacturing process can be simplified.
In addition, the spout 6 serving as a drinking mouth for the contents is formed by extending the lower edge portion 7 connected to the gusset sheet 4 in each of the trunk sheets 2 and 3 to the outer peripheral side together with the gusset sheet 4. The heat seal flange can be eliminated from the portion on the lower edge portion 7 side.
The spout 6 is opened by tearing the tip side starting from a notch K provided in the heat seal flange (15) on the side opposite to the lower edge portion 7, but on the tear end point side (lower edge portion 7 side). Since there is no heat seal flange, the edge of the heat seal flange does not occur around the spout 6 even after the spout 6 is opened. Can be prevented.
Further, since there is no heat seal flange at the lower edge portion 7 of each of the trunk sheets 2, 3, even when the pouch container 1 is grasped to pour out the contents, the heat seal flange bites into the hand. Can be suppressed.
Then, by reducing the folding amount H of the gusset sheet 4 toward the front end side of the spout 6, the entire width (deployment width) of the gusset sheet 4 on the front end side of the spout 6 is reduced. Since the gusset sheet 4 can be easily cut when the front end side is torn, the unsealing property of the spout 6 can be improved.

  Further, the pouch container 1 is configured so that the gusset sheet 4 has a full width (expanded width) of the gusset sheet 4 at the front end side of the spout 6 by setting the folding amount H to 0 near the front end of the spout 6. Becomes almost 0, and the gusset sheet 4 can be more easily cut when the tip end side of the spout 6 is cut, so that the unsealing property of the spout 6 can be improved.

  Further, the pouch container 1 increases the folding amount H as the gusset sheet 4 is separated from the front end side of the spout 6, so that the full width of the gusset sheet 4 increases as the distance from the front end of the spout 6 increases. By enlarging the space between the lower edge portions 7 of the trunk sheets 2 and 3, the inner volume of the entire container can be secured.

In addition, this invention is not restricted to the said Example, For example, you may change suitably the planar view shape of the trunk | drum sheets 2 and 3, the position of a gusset sheet | seat 4, and the spout 6 and a shape. Moreover, you may perform cutting induction processes, such as formation of a half cut and embossing, along the cutting line L4 of the spout 6. FIG.
And the structure in the said Example is an example of this invention, and it cannot be overemphasized that a various change is possible in the range which does not deviate from the summary of the said invention.

It is a front view (front view) of the pouch container in the Example of this invention. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is the C section enlarged view of FIG. It is an expansion | deployment top view of the said pouch container. It is sectional explanatory drawing of the laminated body which forms the said pouch container.

Explanation of symbols

1 Pouch container 2, 3 Body sheet 4 Gusset sheet 5 Bag body 6 Spout 7 Lower edge (one edge)
10 Sheet member 11-16 Heat seal flange H Folding amount

Claims (1)

A pair of body sheets facing each other and a gusset sheet that is foldably interposed between the edges of each body sheet are mainly formed into a bag body, and a part of the bag body is disposed on the outer periphery side of the outer periphery of the bag body In a pouch container that extends to form a spout for contents,
The bag body is composed of one sheet member that connects one edge portion of each trunk sheet via the gusset sheet,
Each of the trunk sheets forms the bag body by adhering the outer peripheral portion excluding the one edge portion as a heat seal flange,
On the end side of one edge portion of each of the trunk sheets in the bag body, the one edge portion is extended together with the gusset sheet to the outer peripheral side of the bag body to form the spout,
The gusset sheet decreases the amount of folding toward the tip end side of the spout, increases the amount of folding as it moves away from the tip end side of the spout, and reduces the amount of folding near the tip of the spout. Set to 0,
A pouch container characterized in that a position at which the folding amount at the spout becomes almost zero intersects a cutting line when the front end side of the spout is opened .

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