JPH10218204A - Standing pouch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a standing pouch of which productivity is superior and application is well suited for filling of content as well as its replacing into another container. SOLUTION: A standing punch having a normal form with its upper part being opened is constructed such that a feeding-out port 4 of which surrounding part is sealed by a heat seal section 5 and of which inner part is elongated to be communicated with an inside part of the pouch is arranged to be extended into a part of an upper opening section of the pouch. It is preferable that heat seal sections at both upper sections of the feeding-out port 4 are formed to be widened to have a projection 6 with a desired width and a desired length even after the extremity end of the feeding-out port 4 is cut and opened and then it is further preferable that a notch 8 and/or a cut displaying line 7 is arranged at a desired position near the extremity end of the feeding-out port 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a standing pouch used for hermetically packaging contents having fluidity such as a liquid, and more particularly, to safely and easily transfer the contents to another container such as a bottle when opened. The present invention relates to a standing pouch in which a thin and long spout is extended at a part of the upper part of the pouch so that the pouch can be transferred.

[0002]

2. Description of the Related Art Conventionally, standing pouches are self-supporting and have the characteristics of a three-dimensional container despite being formed of a soft packaging material such as a plastic film. Also widely used as containers. However, regarding the opening, a method of cutting and opening the entire upper part using a notch provided in the upper part of the standing pouch, cutting off the corner part of the upper part of the pouch with scissors, and using this as a spout. In addition, a method has been adopted in which a spout with a cap made of a plastic molded article or the like is separately attached to the upper opening of the pouch by thermal bonding or the like, and the cap is removed to open the pouch. .

[0003]

However, the method of cutting and opening the entire upper part of the standing pouch has a problem that the pouch is soft and easily overflows from the upper part when held by hand, especially when the contents are liquid. is there. In addition, the method of cutting off and opening the upper corner of the pouch and using it as a spout can reduce the risk of accidentally overflowing the contents as compared with the above method in that the opening can be narrowed. However, when the opening is narrower, the film on both sides of the opening is more likely to adhere to each other on the inner surface, so it is difficult to continuously pour the film to the end with a stable flow. There is a need to squeeze out the contents, and if the squeeze is hand-pressed, the contents instantly vigorously flow out. Therefore, there is a problem that the contents are easily spilled when transferred to another container or the like.

[0004] In addition, a method in which a spout with a cap or the like is attached to the upper opening in advance by heat bonding or the like and the cap is removed to open the opening is performed in advance by adjusting the size of the opening or the like to determine the properties of the contents or the like. Since a stable shape can be set so as to be suitable for the pouring condition, the safety and stability of pouring are superior to those of the above method. But,
When attaching a spout made of such a plastic molded product to a standing pouch, the manufacturing process becomes complicated, and at the same time, the packaging bag is bulky and the filling of the contents is usually performed.
Since it is necessary to perform the process from a small-diameter spout, a special filling device is required, and further, the cost of the spout is extra, so that there is a drawback that the cost for packaging is greatly increased.

The present invention has been made in order to solve such a problem, and an object of the present invention is to eliminate the need for a separate spout of a molded product or the like, and to achieve the same purpose as an ordinary standing pouch. It can be manufactured in the process, filling the contents is easy, and at the time of use, just cut off the tip of the spout extended to a part of the upper part of the pouch and open it,
It is an object of the present invention to provide a standing pouch that can be safely and easily poured into a small-sized bottle or the like to the end, and that is excellent in usability such as transfer.

[0006]

The above objects can be attained by the present invention described below. That is, in the invention described in claim 1, the bottom portion is formed by heat sealing in a gusset form in which the film is folded inward, and the body portion is formed by heat sealing both side edges of the front and rear two wall films. In a standing pouch with an open top, a part of the top opening of the pouch is sealed by heat sealing, and a narrow and long neck-shaped spout that communicates with the inside of the pouch extends upward. It consists of a standing pouch that has been characterized.

In the above, the width (substantially the inner diameter) and length of the neck-shaped spout provided at a part of the upper opening of the pouch are not particularly limited, and the contents to be filled in the pouch are not particularly limited. When used for transfer, and when used for transfer, it is preferable to set appropriately in consideration of the inner diameter and length of the mouth of a container such as a bottle to be transferred. That is, the lower limit of the inner diameter of the spout is at least a size that allows the contents filled in the pouch to be smoothly poured out, and the upper limit is about the same as the inner diameter of the mouth of the container to be transferred. Is preferred. The length of the spout is preferably such that when the spout is inserted into the mouth of the container to be relocated, the tip of the spout protrudes below the mouth of the container with a margin.

By adopting such a configuration, in addition to the function of the ordinary standing pouch, even when the contents of the standing pouch in which the contents such as liquid are sealed and packaged are transferred to a small container such as a bottle, Since the tip of the spout can be cut out and opened, and the spout can be inserted deep into the mouth of a bottle or the like, the contents can be safely and easily transferred to the end without spilling out.

According to a second aspect of the present invention, the spout is provided at a position near one of the right and left ends of the upper opening of the pouch. Become.

[0010] By adopting such a configuration, even if a spout that protrudes in a neck shape is provided in a part of the upper opening of the pouch, the width of the remaining opening can be widened, so that the contents are filled. Can be easily performed from the top of the pouch.

Further, according to the invention as set forth in claim 3, the heat seal portion around the upper portion of the spout cuts out the heat seal portion near the tip end portion of the spout and opens the heat seal portion. 3. A projection having a predetermined width and length on both left and right sides.
And the standing pouch described in (1).

In the above, the protrusions of a predetermined width and length formed on the heat seal portions on both upper sides of the spout are
Cut and open the heat seal portion near the tip of the spout and open it, and when inserted into the mouth of a container such as a bottle to be transferred, the protrusion catches on the shoulder below the container mouth,
It is provided to make it difficult for the spout to come out. In particular, it is preferable to set the width of the protrusion to the left and right ends so as to be larger than the inner diameter of the container mouth even at the time of pouring.

By adopting such a configuration, when transferring the contents of the standing pouch in which the contents such as liquid are hermetically sealed to a bottle or the like, the heat seal portion near the tip of the spout is cut out and opened. When the spout is inserted deeply into the inside of the bottle from the mouth, the protrusions provided on both sides of the opening at the tip of the spout are caught by the shoulder under the mouth in the bottle, so that they can be accidentally pulled out. And the contents can be transferred more safely and easily.

The invention described in claim 4 is a notch for cutting off the heat seal portion at the tip of the spout to open the spout at a predetermined position near the tip of the spout, and / or Alternatively, the standing pouch according to any one of claims 1 to 3, wherein a cutout display line is provided. In the above description, the cutout display line may be provided by a dotted line, a broken line, or the like by printing, or may be provided by a half cut line.

By employing such a configuration, when using a standing pouch in which the contents such as liquid are sealed and packaged, a cutting tool such as scissors is required when the heat seal portion at the tip of the spout is cut open. Instead, a predetermined location can be easily torn open by hand, and the suitability for use is further improved.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention, such as a method for manufacturing a standing pouch, will be described below. First, the material used for producing the standing pouch of the present invention is not particularly limited, and any of the materials used for known standing pouches can be used as they are, and the types of contents to be packaged and the heat treatment after filling are used. A suitable material can be freely selected and used according to use conditions such as presence or absence. Usually, a laminated film mainly composed of plastic is used for the standing pouch, and specific examples of the configuration include the following.

(1) ON film / adhesive / L·LDPE
Film (sealant layer) (2) ON film / adhesive / uniaxially stretched HDPE film / adhesive / L / LDPE film (3) ON film / adhesive / uniaxially stretched PP film / adhesive / L / LDPE film (4) ON film / Adhesive / Uniaxially stretched PP film / Adhesive / Aluminum foil / Adhesive / L·LDPE film (5) ON film (silica vapor deposition layer) / Adhesive / Uniaxially stretched HDPE film / Adhesive / L·LDPE film (6) ON film / anchor coat layer / co-extrusion coat layer (HDPE layer / L / LDPE layer) (7) ON film / anchor coat layer / co-extrusion coat layer (HDPE layer / LDPE layer) / adhesive / L ・LDP
E film (8) PET film / adhesive / aluminum foil / adhesive / ON film / adhesive / L / LDPE film (9) PET film / adhesive / aluminum foil / adhesive / ON film / adhesive / CPP film (10) PET films / adhesives / EVOH films / adhesives / ON films / adhesives / CPP films, and the like, but are not limited thereto, and various combinations of laminated films can be used.

In the above, the ON film is a biaxially stretched nylon film, the L / LDPE is a linear low density polyethylene, the HDPE is a high density polyethylene, the LDPE is a low density polyethylene, the PP film is a polypropylene film, and the PET film is 2 The axially stretched polyethylene terephthalate film and the EVOH film indicate a saponified ethylene-vinyl acetate copolymer film, and the CPP film indicates a non-stretched polypropylene film. Also,
The anchor coat is a kind of primer coat which is pre-coated on the base film side in order to improve adhesiveness when laminating a resin by extrusion coating.

In the construction of the laminated film, ON
Films and PET films are used as base films to impart mechanical strength and printability to pouches,
By using the film and the uniaxially stretched PP film so that the stretching direction matches the tearing direction when opening the pouch, the directionality of the tearing can be further stabilized. Then, an aluminum foil, a silica vapor-deposited layer, an EVOH film, and the like are laminated to provide gas barrier properties. In addition, as the sealant layer, two examples of an L-LDPE film and a CPP film have been described. However, the L-LDPE film has heat sealing stability and content resistance, such as stress cracking resistance to a surfactant. The CPP film is excellent in heat resistance and low odor, and is suitable for packaging of contents requiring these properties.

In the sealant layer, in addition to the above, depending on the content to be filled, ethylene / α-olefin copolymer, ethylene / vinyl acetate copolymer, ethylene / acrylic acid copolymer, ethylene / acrylic ester copolymer may be used. Polymers, ionomers, polyester resins and the like can also be appropriately selected and used. In particular, ethylene-α-olefin copolymers polymerized using metallocene catalysts have excellent low-temperature heat sealability and hot sealability because the molecular weight distribution is narrow and the copolymerization ratio is stable. This is preferable in that a stable seal can be obtained.

Next, a method for manufacturing a standing pouch of the present invention, which is manufactured using the above-described laminated film, will be described. As described above, the standing pouch of the present invention can be safely and easily transferred to another container such as a bottle when opening and using a standing pouch in which contents such as a liquid are hermetically sealed and packaged. A part of the upper opening of the pouch is sealed with a heat seal, and a narrow and long neck-shaped spout that communicates with the inside of the pouch extends upward.

In this case, the spout can be provided at the center of the upper part of the pouch, but is preferably provided near one of the left and right ends. By providing the spout near the end, the width of the opening remaining in the upper part of the pouch can be increased, so that there is an advantage that the filling of the contents from the upper part can be performed more easily. Also, at the time of bag making, the tops of the pouches are abutted with each other in the center in two rows, and the shape of the spout is complicated (commonly called
Since it can be imposed in a nested manner, there is also an advantage that waste of the wall film can be reduced.

In addition, after the heat seal portions on the left and right sides near the tip of the spout are formed with protrusions extending outward with a predetermined size, the heat seal at the tip of the spout is cut out and opened. The spout can be formed such that the protrusions of a predetermined width and length remain in the heat seal portions on both left and right sides of the opening. When such protrusions are provided on the left and right heat seal parts near the tip of the spout, when transferring the contents filled in the pouch to a bottle, for example, by inserting the spout deeply into the mouth of the bottle In addition, since the projecting portion is caught on the shoulder below the mouth of the bottle, the spout does not accidentally fall out of the bottle, so that the contents can be transferred more safely and easily. Further, a notch and / or a cutout indication line can be provided at a predetermined position near the tip of the spout so that the heat seal portion at the tip of the spout can be easily cut and opened.

In the case of manufacturing such a standing pouch, similarly to a normal standing pouch, for example, an appropriate printing is performed on a substrate film on the surface, and a sealant layer, or an intermediate layer and a sealant layer, etc. are laminated by lamination. Then, using the front and rear two wall films and the bottom film finished to a predetermined size (width), the bottom (gusset type), the trunk, and a part of the upper opening of the pouch are formed by a standing pouch bag making machine. The spout to be provided is formed by heat sealing with a predetermined heat seal pattern, and a heat seal portion having a predetermined width is left around the spout, and the upper part of the pouch where the spout is not provided is an opening. Trim the top of the pouch into a shape,
Individual standing pouches can be manufactured by cutting the pouches connected in the lateral direction between the body heat-sealing portions.

In the case where the cutout indicator line provided near the tip of the spout is formed by printing, it can be printed at the same time as printing a pattern or other display items on the base film on the surface of the wall film. . In the case where the cut-out display line is provided by a half-cut line, the cut-out display line can be provided in-line by mechanical means or laser light irradiation during bag making. As for the notch, for example, when trimming the upper part of the pouch at the bag making stage, a notch portion such as a V-shape may be provided on the blade thereof and provided at the same time as trimming. Can also be provided.

If the spout provided so as to protrude from a part of the upper part of the pouch poses a problem in appearance, the spout is set at an appropriate stage after the bag is made and after the content is sealed. Fold it to the trunk side and temporarily fix it with an adhesive seal, etc., or glue it releasably with hot melt etc.,
It can be inconspicuous.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described more specifically below with reference to drawings and test examples. However, the present invention is not limited to these drawings,
It is not limited to test examples. Further, the same reference numerals are used for the parts having the same names in different drawings.

FIGS. 1 and 2 are front views showing the construction of an embodiment of a standing pouch according to the present invention. FIG. 2 is a perspective view for explaining a state when the standing pouch of one embodiment of the present invention is used (when the filled contents are transferred).

In FIG. 1, a standing pouch 30 is shown.
Is formed by heat-sealing the bottom (gusset type) and the body with the bottom heat-sealing part 2 and the body heat-sealing part 3, respectively, and a part of the pouch upper opening (the position near the left end in the figure). ), A thin and long neck-shaped spout 4 whose inside is communicated with the inside of the pouch extends upward, and a predetermined position near the tip end of the spout 4 is provided. Is provided with a notch 8 and a cutout indication line 7 for cutting out the heat seal portion at the tip of the spout 4 and opening the spout opening 9, and the spout 4 at the upper opening of the pouch. The unopened part is used for the filling port of the contents, so the unsealed upper opening 10
As an opening.

The standing pouch 30 having such a configuration is described.
When filling the contents with liquid or the like, the width of the upper opening of the pouch, that is, the unsealed upper opening 10 is narrowed by the provision of the spout 4, so that the sealing of the filling and sealing machine is performed. Although the shape of the head needs to be changed, it can be filled and heat-sealed from the unsealed upper opening 10 in the same manner as a normal standing pouch. At this time, if the spout 4 comes into contact with the nozzle of the filling part and interferes with it, attach a simple guide plate or the like to the filling part,
This can be dealt with by laying the spout 4 in either direction before or after the pouch.

When the contents are transferred from the standing pouch 30 in which the contents are hermetically sealed to another container such as a bottle, the heat seal portion near the tip of the spout 4 provided on the upper part of the pouch is notched. After the cutout indicating line 7 is cut out and the spout opening 9 is opened, the spout 4 is inserted deeply into the mouth of the container, and then the pouch is lifted and tilted, so that the contents can be safely and easily spilled out. Can be transferred to the end.

FIG. 2 shows the structure of a standing pouch 40 in which the shape near the tip of the spout 4 is different from the standing pouch 30 shown in FIG.
That is, in FIG. 2, the standing pouch 40 has a bottom portion and a body portion formed in the same manner as the standing pouch 30 shown in FIG. 1, and is located at a position closer to one end of the upper opening (a position closer to the left end in the drawing). The heat seal portions on the left and right sides near the tip of the spout 4 are enlarged outward by a predetermined size to provide the protrusion 6, and the heat seal near the tip of the spout 4 is cut out and opened. After that, the projecting portion 6 is configured to remain at a predetermined width and length, and a heat seal portion near the tip of the spout 4 is cut off at a predetermined position near the tip of the spout 4. A notch 8 for opening the spout opening 9 and a cutout indication line 7 are provided;
The portion of the pouch upper opening where the spout 4 is not provided is opened as an unsealed upper opening 10 for use as a filling port for contents.

The standing pouch 40 having such a configuration is described.
The contents can be filled and sealed from the unsealed upper opening 10 as in the case of the standing pouch 30 having the structure shown in FIG. When the contents such as liquid sealed in the standing pouch 40 are transferred to a container such as a small-bore bottle, the heat seal portion near the tip of the spout 4 provided on the top of the pouch is notched 8. Then, the spout opening 9 is opened by opening the spout opening line 9 and then the opened spout 4 is inserted deeply from the mouth of the container to be provided in the heat seal portions on both sides near the tip of the spout 4. The projected portion 6 is projected downward from a shoulder portion below the container mouth portion, and even if the spout 4 is accidentally pulled up, the projecting portion 6 is hooked on the shoulder portion of the container. By lifting and tilting the pouch, the contents can be safely and easily transferred to the end without spilling the contents. (See Fig. 3)

FIG. 3 is a perspective view for explaining a state of the standing pouch according to one embodiment of the present invention at the time of use (at the time of transferring contents). In particular, the shape of the spout is shown in FIG. It is a figure showing the state where contents are transferred to a bottle using the standing pouch formed in the type. In FIG. 3, the standing pouch 50 cuts off the heat seal portion at the tip of the spout 4 provided at a part near the end of the upper portion of the pouch, and opens the spout 4. Insert the protruding portions provided on the heat seal portions on both sides of the bottle until they protrude into the shoulder portions 22 that extend below the mouth portion 21 of the bottle 20 for transferring contents, and the protruding portions are caught on the shoulder portions 22 of the bottle. The contents are poured into the bottle 20 so that the spout 4 does not accidentally fall out of the bottle. By performing the transfer by such a method, the contents can be safely and easily transferred to the end without spilling the contents outside.

[Test Example 1] A base film having a thickness of 15
A 130 μm-thick L·LDPE film as a sealant layer is bonded to the ON film having a thickness of 130 μm by dry lamination using a polyester / isocyanate two-component curable adhesive, and aged at 40 ° C. for 3 days. A laminated film for a standing pouch (commonly used for the body and the bottom) was produced.

A standing pouch having the structure shown in FIG. 1 is manufactured by using the above-mentioned laminated film. The dimensions of each part are set as follows, and heat sealing for processing a spout in a bag making machine is performed. An apparatus and a cutting device for trimming were additionally provided for processing, and a standing pouch of Test Example 1 was produced. Further, on the film used for the wall surface of the pouch with the base film, a pattern and a cutout display line were printed in a predetermined size in advance by a back printing method.

The outer dimensions of the main body of the pouch are 130 m in width.
m, length 235mm, length of the folded part at the bottom is 37
mm, and the bottom heat-seal portion has a downwardly curved portion (the height of the bend portion of 32 mm) at the top, as in a normal standing pouch, the lower portion of the bend portion is heat-sealed, and the bottom portion of the bend portion. Was heat-sealed with a pattern having a heat-seal portion with a length of 5 mm to the lower end of the pouch to form a bottom portion, and a body portion was formed by heat-sealing the left and right sides of the pouch with a heat-seal width of 5 mm.

In order to extend a spout projecting upward from the pouch at a position near the left end of the upper opening of the pouch body, the external dimensions of the spout are 24 mm wide and 55 mm long.
And the outer periphery is heat-sealed with a width of 4 mm, and the width is 1 inside.
6mm, 51mm in length with a non-sealed portion,
A heat sealing pattern for the spout and a cutting device for trimming are manufactured so that the spout is provided so that the lower end of the spout is located at a position 12 mm from the left end of the upper opening of the pouch. And made a bag. Note that the cutout display line provided at a predetermined position near the tip of the spout is a position 6 mm below the tip of the spout, that is,
It was provided by printing at a position 2 mm below the heat seal portion at the tip, and the notch was provided off-line at the right end of the cutout display line after bag making. At the position near the left end of the pouch upper opening as described above, there is a spout that protrudes upward and slender, and the portion where the spout is not provided is an unsealed upper opening for filling the contents. The standing pouch of Test Example 1 to be opened was produced.

Test Example 2 As a test example 2, a standing pouch having the shape shown in FIG. 2 was prepared, and the same laminated film as in the test example 1 (the cut-out indicating line near the tip of the spout is also located at the same position) Using the printed material), the outer dimensions of the pouch main body and the position where the spout is provided, and the spout also have the same basic portion such as length and width as in Test Example 1, and the heat seal portion at the tip of the spout. Only the shape of (1) is changed to a shape in which the heat-seal portions on both sides of the tip are enlarged to the left and right sides with a width of 6 mm and a length of 16 mm and provided with a protruding portion. The standing pouch of Test Example 2 was manufactured by changing the blade of the device to this shape. Again,
The notch was provided offline at the right end of the cutout display line near the tip of the spout after bag making.

The standing pouches of Test Examples 1 and 2 prepared as described above were loaded with 500 m of kitchen liquid detergent as contents from the respective unsealed upper openings.
After filling, the opening was degassed and sealed to seal the pouch, and the standing pouch packages of Test Examples 1 and 2 were produced. (20 wrappers are made)

The standing pouch packagings of Test Examples 1 and 2 prepared as described above did not hinder independence even after storage at 35 ° C. for 3 months, and did not leak contents. I was not able to admit.

In order to test the suitability for use of the standing pouch package, the container for transfer is as follows:
Empty plastic bottle of kitchen liquid detergent (capacity 60
0 ml, the inside diameter of the mouth is 24 mm, and the length of the mouth is 20 mm). Also, the tip of the spout of each standing pouch package is cut out from the notch by hand along the cut line, and each spout is cut out. Opened. At this time, the openings could be opened well without any problem.

Next, in the package of Test Example 1, the spout was inserted from the mouth of the bottle until the tip protruded below the mouth of the bottle, and then the pouch was tilted on the bottle, and the contents were placed in the bottle. Poured out. The package of Test Example 2
The spout was inserted from the mouth of the bottle until all protrusions on both sides of the tip protruded below the mouth, and then the pouch was tilted on the bottle and the contents were poured into the bottle. By performing the transfer in this manner, any of the standing pouch packages could be safely and easily transferred to the end without spilling the contents outside.

[0044]

As is apparent from the above description, according to the present invention, there is no need to attach a separate spout made of a molded product or the like, and bag making and filling of contents can be easily performed. When using a standing pouch package in which contents such as liquid are sealed and packaged, cut out the tip of the spout provided to protrude from a part of the top of the pouch, open it, and transfer the spout to a bottle etc. It is convenient and easy to use because the contents can be safely and easily transferred to the end without spilling out by inserting the contents deeply into the mouth of the container and pouring out the contents. It is effective in providing a standing pouch with high productivity.

[Brief description of the drawings]

FIG. 1 is a front view showing a configuration of an embodiment of a standing pouch of the present invention.

FIG. 2 is a front view showing the configuration of another embodiment of the standing pouch of the present invention.

FIG. 3 is a perspective view for explaining a state when the standing pouch of one embodiment of the present invention is used (when contents are transferred).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wall film 2 Bottom heat seal part 3 Body heat seal part 4 Injection port 5 Heat seal part 6 Projection 7 Cutout indication line 8 Notch 9 Injection opening 10 Unsealed upper opening 20 Bottle 21 mouth 22 shoulder 22 30,40,50 standing pouch

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hidehiko Masaki 1-1-1, Ichigaya-Kaga-cho, Shinjuku-ku, Tokyo Dai Nippon Printing Co., Ltd.

Claims (4)

[Claims] 1. A bottom portion is formed by heat sealing in a gusset format in which a film is folded inward, and a body portion is formed by
In the standing pouch, which is formed by heat-sealing both side edges of the wall film of the surface and the top is open, the periphery is sealed by heat sealing at a part of the pouch upper opening and the inside is inside the pouch A standing pouch, characterized in that a thin and long neck-shaped spout communicating therewith extends upward. 2. The standing pouch according to claim 1, wherein the spout is provided at a position near one of the left and right ends of the upper opening of the pouch. 3. A predetermined width and length on both left and right sides of the opening after the heat sealing portion around the top of the spout cuts out the heat sealing portion near the tip of the spout and opens the opening. The standing pouch according to claim 1, wherein the standing pouch is formed so as to have a protrusion. 4. At a predetermined position near the tip of the spout,
The standing pouch according to any one of claims 1 to 3, wherein a notch for cutting off a heat seal portion at a tip of the spout to open the spout and / or a cutout indicating line is provided. .