JP4467705B2 - Pour-out pouch - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pour-out pouch and a side gusset pouch having more stable refillability.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a packaging bag using a flexible packaging material for hermetically packaging contents having fluidity such as liquid, granular, and granular materials has been proposed. These packaging bags may be dispensed in one time as a content to be filled, a distribution unit, or a usage method, or may be dispensed in multiple times. The shape of the packaging bag, the method of forming the spout, and the like differ depending on whether the container is transferred to a wide-mouthed refill container or a container having a narrow mouth when it is completely removed. In addition, a reclose function is required when dispensing in multiple batches.
7A and 7B illustrate a conventional pouch. FIG. 7A is a front view of a standing pouch, and FIG._Four-X_FourIt is sectional drawing of a part. (C) is a perspective view of a side gusset pouch, (d) is X_Five-X_FivePartial sectional view, (e) is X₆-X₆FIG.
As a packaging bag using a soft packaging material having at least one surface having heat-fusibility, the front member 3 and the rear member are self-supporting and have characteristics as a three-dimensional container as shown in FIG. 7 is a bottom gusset type standing pouch, in which the heat-sealing layer surfaces of 4 are arranged facing each other, a bottom member folded in two from the lower part is inserted, and the periphery is heat-sealed, or FIG. As shown in FIG. 7 (c), FIG. 7 (d) and FIG. 7 (e), as a packaging bag using a soft packaging material having at least one surface having heat-fusibility, it has self-supporting properties. Further, the heat sealing layer surfaces of the front member 3 and the rear member 4 which have characteristics as a three-dimensional container are arranged so as to face each other, and a side member which is folded in two with the heat sealing surface facing outside is inserted from the left and right sides. The side and bottom are heat sealed. Self-standing bag, etc. of the gusset type is widely used.
However, the standing pouch has good self-sustainability, but becomes large when the package is viewed from the front with respect to the amount of contents to be filled. Further, as shown in FIG. 7 (b), since the top is a bag formed by sealing two members, there is a dead space in a case such as corrugated cardboard in which the packaging body of the standing pouch 50 is accumulated. Will result.
Further, the side gusset type self-supporting bag 60 as shown in FIGS. 7C, 7D, and 7E with respect to the standing pouch 50 is substantially brick-shaped when filled with contents. Even in the integration, the dead space generated in the case is improved as compared with the standing pouch 50.
[0003]
[Problems to be solved by the invention]
In particular, a method for forming a spout for transferring the flowable contents filled in the packaging bag to another container is required to be able to be stably transferred. Recently, as shown in FIG. 8, there are cases in which a spout made of synthetic resin is attached to a standing pouch (a) or attached to a side gusset pouch.
For example, a pouch having a spout 57 made of synthetic resin as shown in FIG. 8C is often used at the upper edge or corner of the pouch. It is easy to take out the contents from the pouch equipped with the synthetic resin spout 57, and it is relatively easy to transfer to other containers.
However, when the synthetic resin spout 57 is attached to the pouch, the cost of the container increases, and the productivity as the container decreases due to the process of attaching the synthetic resin spout.
Accordingly, a pouch that is not equipped with a synthetic resin spout is filled with a liquid product. In order to take out the liquid as the contents from the pouch filled with these liquids, the corner of the pouch is usually cut out to form an opening, but if the corner of the pouch is cut obliquely appropriately to form an opening. In addition, the shape of the opening and the shape of the pouring mouth are not constant, and in the case of refilling, there are cases where the shape of the opening is zero.
Thus, a method has been proposed in which a narrow-width liquid guide portion is formed in a part of the pouch and an intermediate portion of the liquid guide portion is cut to form a narrow opening. It is difficult to pour out at the exit. Therefore, processing such as forming the liquid guide portion as a conduit by molding may be performed, but the process is complicated.
A pouch that is self-supporting, has an efficient shape in integrated packaging, and also has the characteristics of a three-dimensional container, and can be easily and stably refilled into another container, particularly a container with a small receptacle. The appearance of a pouch was desired.
An object of the present invention is to provide a pouch shape which is of a side gusset type and can take out or refill the contents stably and reliably.
[0004]
[Means for Solving the Problems]
  The present inventionA pour-out pouch,A cut planned line that passes through the top edge of the side-sealed and bottom-sealed side gusset bag and is inclined with respect to the edge is printed in advance. A projecting seal portion that seals a portion composed of a cross line and a side seal portion that passes through a contact point on the inside of the portion and intersects the planned cut lineButFormationThe crossing angle of the crossing line is 90 ° ± 20 ° with respect to the planned cutting line, and the tip of the protruding seal part is 2 to 20 mm from the crossing point of the crossing line. When the planned line is cut and opened, the upper part of the side member forms a ridge line, and a substantially triangular shape and a bowl-shaped pouring port can be formed.A pour-out forming pouch characterized in that the width between the side seal portions at the top of the side gusset pouch is narrower than the other width, and the outside of the side seal portion provided at the narrow width This includes that the portion is cut off into a shape that follows the shape of the narrow width, and that the bottom seal portion has a boat-type seal shape.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
The pour-out forming pouch of the present invention is a pouch having a sealing property and a self-supporting property formed from a flexible laminate, and capable of stably taking out the contents. Hereinafter, it will be described in detail with reference to the drawings.
FIG. 1 illustrates a pour-out pouch according to the present invention, (a) is a perspective view of a state in which a pour-out is formed, and (b) is G₁(C) is X₁-X₁FIG. FIG. 2 is a view for explaining a protruding seal portion in the pouring port forming pouch according to the present invention, wherein (a) is a plan view of the pouch, and (b) is Y₁(C) is an enlarged view of the part X₂-X₂It is sectional drawing of a part. FIG. 3 is a plan view of the pouch before filling showing another embodiment of the pour-out pouch according to the present invention. 4A and 4B illustrate the structure of the side gusset pouch and the bag making method. FIG. 4A is a perspective view, and FIG._Three-X_ThreeFIG. FIG. 5 is a cross-sectional view of a laminate constituting the material of the pouch used in the pour-out pouch according to the present invention. FIG. 6 shows an example and a comparative example illustrating the pouring opening forming pouch of the present invention, (a) is an example, and (b), (c) and (d) are comparative examples.
[0006]
In order to solve the above problems, the present inventors can stably take out the contents, which are formed of a flexible material and filled and sealed in a self-supporting pouch, or can be refilled into another container. As a result of earnest research on possible methods, the problem can be solved by setting the planned cut line of the side gusset pouch and forming the seal part as shown below at the intersection of the planned line and the side seal part. As a result, the present invention has been completed.
As shown in FIG. 1 (a), the pouring opening in the pouring opening forming pouch of the present invention is obtained by cutting the planned cutting line printed on the pouch with a scissors or the like and removing the corner portion of the pouch to remove the side gusset pouch. The upper part of the gusset part is opened, and the upper part of the side member of the opening part, as shown in FIG.
[0007]
The pouch according to the present invention is a side gusset pouch and will be described in detail with reference to the drawings.
[0008]
As shown in FIG. 7 (c), the side gusset pouch pouch has a shape close to a cube or a rectangular parallelepiped when the contents are stored, and is extremely efficient when stacked and displayed at stores. It is a side gusset pouch that can be said to be a packaging form. The side gusset pouch also has a characteristic as a self-supporting bag. In other words, the horizontal cross-sectional shape when the contents are stored and self-supporting is a square or a rectangle, and the vertical and horizontal length ratios at that time approach self-supporting stability.
[0009]
When such a side gusset pouch is used as a so-called refillable container, when the contents made of a fluid substance such as a liquid are packaged, and the contents are taken out and used, they are transferred to other containers. In many cases, the shape of the opening does not form a stable shape by simply cutting off the corners to form the opening. Therefore, as a result of intensive research on a method for stably refilling the side gusset pouches, the present inventors have established a cut-out line and a protruding seal portion to be described later, so that the pouring outlet of the contents is always in a constant shape. As a result, the present invention was completed.
[0010]
As shown in FIGS. 4 (a) and 4 (b), the side gusset pouch uses a laminate having at least one surface having heat-sealing properties, and the heat-sealing surfaces of the front member and the rear member face each other. The side members 5 and 6 that are folded in two at the folding line 7 with the heat-sealing surface outside are inserted from the left and right sides of the front member 3 and the rear member 4 with the folding line 7 in the middle, and the left and right sides thereof. The side gusset pouch 1 can be formed by forming a cylindrical body in which the end portion is heat-sealed to form the side seal portion 8 and the bottom portion is heat-sealed to form the bottom seal portion 9. The cylindrical body may be formed into a cylindrical shape by joint sealing the same composite film, and a tubular film obtained by an inflation method or the like is used, gusset portions are formed on the left and right sides, and side sealing portions May be formed to form a bottom seal portion.
[0011]
Next, a method for forming the triangular pouring port will be described.
As shown in FIGS. 2 (a), 2 (b), and 2 (c), the protruding seal portion is a side gusset pouch P that is side-sealed and bottom-sealed.₀The cut planned line 11 that passes through the top edge of the sheet and is inclined with respect to the margin is printed in advance, and at the time of heat sealing in the bag making process, as shown in FIG. In this case, the portion formed by the cross line 13 and the side seal portion 8 that passes through the intersection 14 between the planned cut line 11 and the inside of the side seal portion 8 and intersects the planned cut line 11 is heat-sealed and protruded. The portion 12 is formed.
The crossing angle of the crossing line is 90 ° ± 20 ° with respect to the planned cutting line 11, and the protruding seal part 12 has a suitable distance r from the crossing point 14 of the crossing line 13, and the tip of r In the present invention, r is suitably in the range of 2 to 20 mm from the edge toward the side seal portion.
[0012]
The side gusset pouch provided with the protruding seal portion 12 described above is filled with the contents, the top portion is heat-sealed and sealed, and a cut-out line is opened with a scissors for removal. When it is attempted to take out the contents by inclining the portion 2, the upper portion of the side member 5 forms a ridge line 17 as shown in FIG. The ridge line 17 of the pouring port 16 is formed along the cross line 13 of the protruding seal portion 12 as shown in FIGS. 2 (a) and 2 (b). If the projecting seal portion 12 is not present, the ridge line 17 is not formed or the shape is not stable, and the content is not taken out stably. Moreover, the cross-sectional shape of the pouring port 16 is a triangular ridge shape as shown in FIG. 1 (c), so that the liquid to be taken out can be trickled, and even if the mouth portion of the container to be transferred is small, it is safe. It can be injected with heart.
[0013]
As shown in FIG. 3, the side gusset pouch used for the pouring opening forming pouch P of the present invention is provided with a width between the upper side seal portions narrower than the other widths and with the narrow width. More preferably, the outer portion of the side seal portion is cut off into a shape that follows the shape of the narrow width. By narrowing the interval, there is no fear that the liquid will spill out even if the cut line is cut by scissors to form the opening.
[0014]
Moreover, the side gusset pouch used for the pouring mouth forming pouch of the present invention is
As shown in FIG. 3, it is desirable that the bottom seal portion 9 has a boat-type seal shape.
The bottom seal may be a straight seal for sealing, but as a boat-shaped seal, it is preferable to cut off or remove the outside of the bottom corner seal, and to cut off or remove the corner. By doing so, when the pouch is made self-supporting, the repulsive force at the bottom straight seal portion is weakened and the self-supporting property is improved.
[0015]
Next, the material of the pouch pouch used for the pouring opening forming pouch of the present invention will be described.
First, as a member on each surface forming the side gusset pouch of the present invention, a tube-shaped single layer film formed by an inflation method or the like can be used, but a laminate mainly composed mainly of plastic is used. Used. The laminate is composed of at least a base material layer and a heat-sealing layer as shown in FIG. 5 (a). Usually, as shown in FIG. Three layers (excluding the adhesive layer, the same applies hereinafter) provided with a barrier layer 22 between the fusion layer 24 or, as shown in FIG. 5C, a base material layer 21, a barrier layer 22, The intermediate layer 23 and the heat fusion layer 24 may be four layers, or a plurality of layers may be further laminated.
[0016]
First, since the base material layer 21 of the laminate 20 constituting each surface member of the side gusset pouch 1 is a basic material constituting the side gusset pouch, properties excellent in mechanical, physical, chemical, etc. For example, polyester-based, polyamide-based, polypropylene-based, polycarbonate-based, and polyacetal-based resins can be used.
Moreover, as a film using these resins, any of an unstretched film or a stretched film stretched in a uniaxial direction or a biaxial direction can be used, and the thickness of the film is a strength as a basic material, The thickness may be a thickness that can be held to the minimum necessary for rigidity and the like, and if it is too thick, processing defects such as heat fusion or easy tearing may occur, and there is a disadvantage that costs increase. If the base material layer 21 is too thin, strength, rigidity and the like are lowered, which is not preferable. In the present invention, the thickness of the base material layer is suitably about 12 to 30 μm for the reasons described above.
The synthetic resin film may be a film coated with polyvinylidene chloride as needed, or a film on which a vapor deposition layer of aluminum, silicon oxide, aluminum oxide, indium oxide, tin oxide, zirconium oxide or the like is formed. It is good also as a structure which has barrier property. In addition, since the base material layer 21 is usually used as an outer surface layer, it is often printed on the back surface (the surface on which the intermediate layer 23 or the heat-sealing layer 24 is bonded), so that printability is also required.
As the base material layer 21, a stretched film stretched in a uniaxial direction or a biaxial direction is suitably used because of its rigidity and good workability including printing.
[0017]
Moreover, as the heat sealing | fusion layer 24 of the laminated body 20 which comprises the side gusset pouch 1, when making the bag 20 of the laminated body 20, what can be sealed and sealed by heat sealing | fusion is sufficient, for example, low density Polyethylene, medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene, ethylene-α-olefin copolymer polymerized using metallocene catalyst, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate Copolymers, ionomer resins, ethylene / acrylic acid copolymers, ethylene / methyl acrylate copolymers, ethylene / methacrylic acid copolymers, etc. Can be used. In particular, the ethylene-α-olefin copolymer polymerized using the metallocene-based catalyst has a narrow molecular weight distribution and a stable copolymerization ratio, and thus has excellent low-temperature heat sealability and hot sealability. In the present invention, it is a material suitable for preventing a sealing failure due to a step due to a difference in film overlap between the front film, the rear film, and the side film.
The thickness of the heat sealing layer 24 is suitably 30 to 500 μm. When the thickness as the heat-fusible layer 24 is less than 30 μm, there is a possibility of poor sealing performance, and the sealing strength is insufficient, and the bag may be broken in a drop impact or the like. On the other hand, if the thickness of the heat-sealing layer 24 exceeds 500 μm, it takes time for heat-sealing, the workability is lowered, and easy-opening processing becomes difficult.
[0018]
In the present invention, a barrier layer 22 may be provided between the base material layer 21 and the heat sealing layer 24, and the barrier 22 is usually packaged only by the base material layer 21 and the heat sealing layer 22. It is provided when the barrier function as a bag and a self-supporting bag cannot be sufficiently achieved. Further, an intermediate layer 23 may be provided between the barrier layer and the heat-sealing layer for the purpose of improving the barrier properties, strength, rigidity, etc. as the side gusset pouch.
Functions of the barrier layer 22 or the intermediate layer 23 include gas barrier properties (gas barrier properties), mechanical toughness, rigidity, bending resistance, puncture resistance, impact resistance, wear resistance, cold resistance, and chemical resistance. These final functions required as packaging bags and self-supporting bags are achieved by providing the intermediate layer 23. Examples of the material used as the barrier layer and / or the intermediate layer 23 include metal foils such as aluminum, iron, copper, and tin, polyolefins such as polyethylene terephthalate, polyamide, polyethylene, and polypropylene, polyvinylidene chloride, polycarbonate, and polyvinyl. Alcohol, ethylene-propylene copolymer, ethylene / acrylic acid copolymer, ethylene / vinyl acetate copolymer, saponified ethylene / vinyl acetate copolymer film, etc. or films coated with polyvinylidene chloride on these A film formed by vapor deposition of aluminum, silicon oxide, aluminum oxide, indium oxide, tin oxide, zirconium oxide, or a film such as polyvinylidene chloride can be used. In addition, one or more of these materials can be used in combination. The thickness of the intermediate layer 33 only needs to satisfy the functions required as a packaging bag and a self-supporting bag, and can be appropriately selected as necessary.
[0019]
Further, the laminate 20 constituting the pouring opening forming pouch member according to the present invention includes the base layer 21, the barrier layer 22, the intermediate layer 23, the heat-sealing layer 24, and the like as required by known dry lamination. , T-die extrusion method or the like can be used for bonding. When the T-die extrusion method is used, an anchor coating agent may be preliminarily applied to the extruded side film or the like for the purpose of improving adhesiveness.
[0020]
A specific configuration example of the film formed by the side gusset pouch of the present invention will be described. The side gusset pouch of the present invention can be formed from a tube-shaped film formed by an inflation method or the like, but it is desirable to use a laminate having at least one surface having heat sealability.
As described above, the front and rear and the left and right directions are each composed of four sheets arranged in such a manner that the surfaces having the respective heat fusion faces each other. And a bag is bag-made by the heat seal of those inner surfaces.
Therefore, the film forming the bag has at least one surface having heat-fusibility as the material structure, and the film used can have the same structure at any part. As the film, a laminate mainly composed of plastic is mainly used, but is not particularly limited, and any known laminate used in various pouches can be used. From these, it is possible to freely select and use a suitable one according to use conditions such as the type and filling amount of the contents to be packaged and the presence or absence of heat treatment after filling.
Specific examples of the structure of the laminate 20 that can be preferably used as the side gusset pouch of the present invention include the following.
(1) 0N / AD / LLDPE (#)
(2) ON / AC / HDPE / LLDPE> (#)
(3) ON ・ SiOX / AC / <HDPE / LLDPE> (#)
(4) PET / AD / AL / AD / ON / AD / LLDPE (#)
(5) PET / AD / AL / AD / ON / AD / S-PE (#)
(6) PET / AD / AL / AD / ON / AD / CPP (#)
(7) PET / AD / ON / AD / AL / AD / LLDPE (#)
(8) PET / AD / ON / AD / AL / AD / S-PE (#)
(9) PET / AD / ON / AD / AL / AD / CPP (#)
(10) PET / AD / EVOH / AD / ON / AD / CPP (#)
[0021]
In addition, although the said material structural example was described in the symbol, the symbol represents the following material or layer, respectively.
ON: Biaxially oriented nylon film, AD: Adhesive, LLDPE: Linear low density polyethylene, AL: Aluminum foil, O-HDPE: High density polyethylene uniaxially stretched film, LDPE: Low density polyethylene, O-PP: Polypropylene Uniaxially stretched film, S-PE: ethylene-α / olefin copolymer polymerized using metallocene catalyst, PET: biaxially stretched polyester film, CPP: unstretched polypropylene film, SiOX : Silica vapor deposition layer, AC: Anchor coat, EVOH: Saponified ethylene / vinyl acetate copolymer, and <> indicates coextrusion.
In addition, the anchor coat is a kind of primer coat that is pre-coated on the base film side in order to improve adhesion when the resin is laminated by extrusion coating.
And aluminum foil, a silica vapor deposition layer, EVOH film, etc. are laminated | stacked in order to provide gas barrier property.
[0022]
In addition, although two examples of the LLDPE film and the CPP film have been given as the heat sealing layer 24, the LLDPE film is used for heat seal stability and content resistance, for example, stress cracking resistance against a surfactant. The CPP film is excellent in heat resistance and low odor, and is suitable for packaging contents that require these performances.
[0023]
In addition to the above, the heat-sealable layer 24 has an ethylene / vinyl acetate copolymer, an ethylene / acrylic acid copolymer, an ethylene / acrylic acid ester copolymer, an ionomer, a polyester resin, depending on the contents to be filled. An ethylene-α / olefin copolymer polymerized using a metallocene-based catalyst can also be appropriately selected and used.
[0024]
Next, the manufacturing method of the side gusset pouch 1 of this invention is demonstrated. Using a laminate having at least one surface having heat-fusibility, as shown in FIG. 4 (a) or FIG. 4 (b), the front and rear members 2, 3 are arranged so that the heat-sealing surfaces face each other. Then, the side members 4 and 5 are folded in two from the both sides with the heat fusion surface as the outside, and the fold line 7 is inserted between the front member 3 and the rear member 4 as the inside, and the side wall edge The side wall seal portion 8 is formed by heat bonding, and then the bottom seal portion 9 (boat type seal) is formed at the bottom portion to form a bottom portion that does not leak even the liquid contents.
[0025]
To fill and seal the contents in the side gusset pouch of the present invention, the upper side of the pouch is an unsealed portion, and when filling, the unsealed portion is opened, and a filling nozzle is inserted into the formed opening, After filling a predetermined amount of contents, the nozzle is pulled out of the pouch, and the unsealed portion on the upper side is heat-sealed to seal the pouch.
[0026]
【Example】
The pouring opening forming pouch of the present invention will be described more specifically with reference to examples.
Both the example and the comparative example are side gusset pouches, and the shape thereof is as shown in FIG. The following dimensions were common.
The packaging material must be
PET12 / AD / AL9 / AD / ON15 / AD / LLDPE40
[Abbreviation PET: Biaxially stretched nylon film, ON: Biaxially stretched nylon film, AD: Adhesive, LLDPE: Linear low density polyethylene, AL: Aluminum foil, PET: Biaxially stretched polyester film, after the abbreviation The numbers indicate the thickness μm of each layer.
In the front view of the pouch before filling (FIG. 6)
Pouch width m: 90mm
Pouch height l: 244 mm:
Gusset folding width (one side) n: 35 mm
Scheduled cut line: Preliminarily printed so as to pass 2 cm right from the center of the upper edge of the pouch and reach the left side at an angle of 30 ° with respect to the upper edge.
Contents: Filled with 400 ml of water
[Example 1]
In the side gusset pouch, as shown in FIG. 6A, the interval between the left and right side seal portions 8 is narrow at the top, and the bottom seal portion 9 is a boat-shaped seal.
The protruding seal portion 12 is formed by passing the intersection of the planned cut line and the inner edge of the side seal portion and crossing the cut line 11 at right angles to the planned cut line 11. The projecting seal portion 12 was formed by heat-sealing the region sandwiched between the inner edges in a triangular shape.
[Comparative Example 1]
As shown in FIG. 6B, the same conditions as in Example 1 were used except that the protruding seal portion was not provided.
[Comparative Example 2]
As shown in FIG. 6 (c), the left and right side seals have the same width at the top, and a bottom seal at the bottom.
[Comparative Example 3]
In FIG. 6 (d), the left and right side seal intervals have the same width at the upper and lower portions, and the bottom seal portion is a flat seal.
<Evaluation method>
1) Pourability
Easily pour out the liquid when pouring the liquid when forming the opening when the corner is cut off from the planned cut line of each specimen and the opening is formed, and the pouch is tilted toward the opening. Checked.
2) Independence
Each specimen was filled and sealed with the contents and allowed to stand on a horizontal surface. And we checked the stability of independence and the presence or absence of falls.
<Result>
In Example 1, the formation of the pour-out port has a constant shape for all the specimens, and the liquid is also taken out from the tip of the triangular pour-out port as a small flow. However, in Comparative Example 1,
The formation of the pouring spout becomes an irregular shape, and the liquid is taken out from both sides of the triangle, and the liquid flows in a state close to turbulent flow. However, both Example 1 and Comparative Example 1 had the same independence and did not fall.
In Comparative Example 2, the formation of the spout became more unstable than in Comparative Example 1, and the outflow from both sides of the triangular shape at the time of taking out became more severe. Independence was the same as in Example 1 and Comparative Example 1.
In Comparative Example 3, the formation of the spout and the removal of the liquid were both unstable as in Comparative Example 2. Furthermore, independence was extremely unstable, and 30 out of 100 specimens fell in a stationary state.
[0027]
【The invention's effect】
Since the pour-out pouch of the present invention is a side gusset pouch, the contents can be stored efficiently, and if the opening is formed along the specified cut line of the present invention, the presence of the protruding seal portion When the gusset portion naturally spreads, the liquid spout is surely formed into a bowl shape.
When the contents are taken out or transferred to another container, the cross-sectional shape of the bowl-shaped spout is triangular, so that the liquid as the contents can be poured out as a trickle. Therefore, even if the receiving portion of the container to be transferred is small, the transfer can be performed stably.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 illustrates a pour-out forming pouch according to the present invention, wherein (a) is a perspective view of a state in which a pour-out is formed, and (b) is a G₁(C) is X₁-X₁FIG.
FIGS. 2A and 2B are diagrams for explaining a protruding seal portion in the pour-out forming pouch according to the present invention, wherein FIG. 2A is a plan view of the pouch, and FIG.₁(C) is an enlarged view of the part X₂-X₂It is sectional drawing of a part.
FIG. 3 is a plan view of a pouch before filling showing another embodiment of the pour-out pouch according to the present invention.
FIGS. 4A and 4B illustrate the structure of a side gusset pouch and a bag making method. FIG. 4A is a perspective view, and FIG._Three-X_ThreeFIG.
FIG. 5 is a cross-sectional view of a laminate constituting the material of the pouch used in the pour-out pouch according to the present invention.
6A and 6B show an example and a comparative example for explaining a pour-out forming pouch according to the present invention. FIG. 6A shows an example, and FIGS. 6B and 6C show a comparative example.
7A and 7B are diagrams for explaining a pouch according to a conventional technique, FIG. 7A is a front view of a standing pouch, and FIG._Four-X_FourIt is sectional drawing of a part. (C) is a perspective view of a side gusset pouch, (d) is X_Five-X_FivePartial sectional view, (e) is X₆-X₆FIG.
FIGS. 8A and 8B show an example in which a spout made of a synthetic resin is attached to a pouch, where FIG. 8A shows an example where the pouch is attached to a standing pouch, and FIG. 8B shows an example where the pouch is attached to a side gusset pouch.
[Explanation of symbols]
P pour-out pouch
1 Side gusset pouch
2 opening
3 Front member
4 Rear members
5 Side members
6 Side members
7 Folding line
8 side seal
9 Bottom seal
10 Top seal part
11 Cut line
12 Protruding seal
13 Cross line (with planned cut line)
14 Intersection
15 Filling side
16 pouring spout
17 Ridge line
18 Middle line
19 Outlet edge
20 Laminate
21 Base material layer
22 Barrier layer
23 Middle layer
24 Heat seal layer
25 Adhesive layer
50 Standing Pouch
51 Front member
52 Rear member
53 Bottom member
54 side seal
55 Bottom seal
57 Outlet made of synthetic resin
60 side gusset pouch
61 Front member
62 Rear member
63 Side members
64 Side members
65 side seal
66 Folding part
67 Synthetic resin spout
68 Flange
69 Adhesive base
70 tube
71 Tube
72 screws
73 Cap

Claims (3)

A pour-out pouch, which passes through the top edge of the side-sealed and bottom-sealed side gusset bag and pre-prints a cut-out line inclined with respect to the edge, on the inside of the line A projecting seal portion is formed by sealing a portion composed of a cross line and a side seal portion passing through a contact point on the inside of the planned cut line and the side seal portion and intersecting the planned cut line; The crossing angle is 90 ° ± 20 ° with respect to the planned cutting line, and the tip of the protruding seal part is 2 to 20 mm from the crossing line crossing line. An upper part of the side member forms a ridge line and can form a substantially triangular and bowl-like pour-out pouch.   The width between the side seal portions on the upper side gusset pouch is narrower than other widths, and the outer portion of the side seal portion provided with the narrow width is cut off into a shape following the shape of the narrow width. The pour-out forming pouch according to claim 1.   The pour-out pouch according to claim 1 or 2, wherein the bottom seal portion has a boat-type seal shape.

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