JP6977423B2 - Packaging bag with spout - Google Patents

Description

The present invention relates to a packaging bag among packaging containers. In particular, a packaging bag using a plastic film as a base material, which can more easily pour out the contents, and has a spout, which is made by sealing the peripheral portion or the like and has a spout. It's about bags.

Conventionally, a packaging bag made of a laminate having a sealant layer using a plastic film as a base material is not limited to the case where a single layer of a plastic film is used except for the sealant layer, but also other films, resin layers, metal foils, etc. One of the features of the laminated body is that it is possible to design the layer structure and material according to the required quality of the contents, and it is widely used for various purposes.

In particular, a packaging bag having a spout is excellent for pouring out fluid contents. For example, it is widely used for beverages and foods, and is suitably used for paste-like foods as well as liquids. In addition, there are cases where it is used as a seasoning such as miso, which is more advantageous than glass bottles and cans in terms of performance and cost.

In addition, for example, if it is a liquid or paste-like content such as beverages such as cooking oil, sauces, coffee beverages, foods, toiletry products such as liquid detergents and softeners, and industrial products such as engine oil. It can be easily filled and stored in a packaging bag, and it can also be excellent in storage stability depending on the application.

In addition, recently, there has been a movement to reduce waste by using refill containers from the viewpoint of environmental protection, instead of disposing of plastic and glass bottles, and the sealant layer is made of plastic film as a base material. The demand for the packaging bag made of the laminated body having the above is particularly increasing.

Generally, a packaging bag has a function of displaying information on the contents and storing the contents inside the packaging bag, protecting the contents from the external environment, and storing the contents. When taking out the contents, the packaging bag has a function. Ease of removal, especially if it is a fluid, is important, and the form and material composition vary depending on the content and its purpose.

In particular, regarding the ease of pouring, when the packaging bag is opened and then taken out from the opening, not only is it stable and easy to pour, but it may also spill out or stain your hands. Is inconvenient, and it is desirable that the opening is stable and keeps its shape. This is also particularly required for refill containers.

However, in many cases, a packaging bag using a plastic film as a base material and having a sealant layer has both ends of the opening sealed by the sealant layer, and the flexibility of the plastic film makes it impossible to maintain a stable shape. In some cases, it may interfere with stable and easy pouring. Alternatively, it has been pointed out that due to the rigidity and resilience of the plastic film, the flow path or opening may be easily closed as the contents are reduced.

If the stable shape cannot be maintained, the pouring operation itself is unstable, which may cause a problem that the contents may spill out. Alternatively, if the opening closes during pouring of the contents, the opening must be reopened, and the work with the fingers is more difficult than the work of opening a new one, and the contents Not only may it spill, but it may also stain the fingers, which has bothered users and consumers.

This is a common problem that needs to be improved regardless of whether the content is liquid or paste. Conventionally, for example, a mouthpiece has been attached to a packaging bag to improve the ease of removal.

Alternatively, Patent Document 1 also proposes to improve this problem by inserting a member other than the film into the mouth of the pouring.

However, the spout and the cap for sealing are generally made of a plastic molded product, which requires a separate member and a separate process, which is disadvantageous in terms of cost.

Furthermore, when disposing of the product after use, it may be necessary to separate and separate the spout and cap from the main body, which causes the problem of bulkiness in the inventory and transportation efficiency of the packaging bag or the product after filling. There is. The same applies to the case where a member other than the film is inserted into the pouring port portion.

On the other hand, packaging bags having a branched small chamber or a spout at one corner of the body are already known, but those ribbed to keep the spout at the time of opening are patent documents. 2. It is also proposed in Patent Document 3 and Patent Document 4.

However, in the case of a packaging bag having a spout portion formed in a corner portion, the spout may be blocked by pressurization when the contents are taken out, which may hinder the taking out of the contents.

Alternatively, when the remaining amount is low, if the contents are rolled up from the bottom side of the packaging bag in an attempt to squeeze it, the packaging bag will be wound diagonally, resulting in poor workability and liquid that does not go to the spout. There is a risk that escape will occur and the remaining amount will increase.

Further, in the packaging bag ribbed to retain the shape of the spout at the time of opening, which is proposed in Patent Document 2, Patent Document 3, and Patent Document 4, if air does not enter the packaging bag at the time of opening, the spout portion is opened. Since the contents cannot be reshaped, the films of the spout may be in close contact with each other in the case of a highly viscous content, the rigidity of the films may be lost, the rib effect may not be exhibited, and the opening of the spout may not be maintained.

Japanese Unexamined Patent Publication No. 5-13069 Japanese Patent No. 4617866 Japanese Patent No. 4826096 Japanese Patent No. 4816322

The present invention has been made in view of the above circumstances, and at least in a packaging bag made of a laminated body having a plastic film as a base material and a sealant layer, the contents are self-supporting when filled and the contents are self-supporting. It is an object of the present invention to enable the provision of a packaging bag having a spout capable of maintaining a stable shape of the spout portion in pouring.

The invention according to claim 1 is a means for solving the above problems.
A packaging bag having a spout, which is made of a laminate having at least a plastic film as a base material and having a sealant layer.
The packaging bag having the spout is composed of a body, a bottom, and a branch.
The torso is composed of a front torso and a back torso, with side ends and upper ends sealed.
At the bottom of the torso, a bottom plate is sealed between the anterior torso and the back torso to form an expandably sealed bottom.
At the upper part of the anterior trunk portion, a branch having a tip portion and projecting from the front trunk portion is formed.
The branch is a folding line at the height of the branch, and the laminated body continuous from the upper side of the front body portion and the laminated body continuous from the lower side of the front side body portion overlap each other so that the branch can be folded back to either the upper or lower side of the front side body portion. , Side edges and tips are sealed,
The tip is provided so as to be removable from the branch at the planned opening line, and a spout can be formed.
The distance from the upper side of the torso above the height position of the branch of the torso is less than half the distance from the upper side to the lower side of the torso.
Further, at the height position of the branch, the distance between the front torso and the back torso is larger than 3 mm and smaller than the distance between the front torso and the back torso at the bottom of the torso.
When the portion of the body above the height position of the branch is folded downward so that the branch is folded upward, the front side film of the branch and the back side film of the branch are formed at the position of the planned opening line of the branch. A packaging bag with a spacing of more than 1 mm and smaller than the spacing between the anterior and posterior torso at the bottom of the torso.
On both the left and right sides of the package, inside the seal at the side end, a seal portion continuously provided on the side end seal and straddling the folded line at the height of the branch is provided.
A packaging bag having a spout , wherein the seal portion straddling the folded line is composed of the following portions (a) to (c).
(A ) A portion that is located near the folding line and on the branch side from the folding line, and is sealed with the branch front side film and the branch back side film constituting the branch .
(B) A laminated body that is located near the turn-back line, is on the body side of the turn-around line, and is located above the turn-back line, and is continuous from above the front side body portion, and the rear side body portion is sealed. Part .
(C) The laminated body and the rear body portion which are located near the folding line, on the body side of the folding line, and below the folding line, and which are continuous from the lower side of the front body portion, are sealed. The part .

Further, the invention according to claim 2 is based on the invention.
The packaging bag having a spout according to claim 1, wherein the laminated body has a waist strength of 20 mN / 15 mm or more.

Further, the invention according to claim 3 is based on the invention.
The spout according to claim 1 or 2, wherein the left and right sides of the body are provided with recesses from the left and right sides below the height of the branch or the height of the branch. It is a packaging bag to have.

According to the present invention, at least in a packaging bag made of a laminated body having a plastic film as a base material and a sealant layer, the packaging bag is self-supporting when the contents are filled, and the spout portion is stable when the contents are poured out. It is possible to provide a packaging bag with a spout that can retain the shape of the bag.

In particular, according to the invention according to claim 2, at least in a packaging bag made of a laminate having a plastic film as a base material and provided with a sealant layer, the packaging bag is self-supporting when the contents are filled and in pouring out the contents. , The packaging bag having the spout can be sufficiently rigid so that the spout can maintain a stable shape. It is also possible to make the independence more reliable.

In particular, according to the third aspect of the present invention, the sealing of the branch portion has the effect of preventing wrinkles when the branch is broken.

In particular, according to the invention of claim 4, at least in a packaging bag made of a laminated body having a plastic film as a base material and provided with a sealant layer, the packaging bag is self-supporting when the contents are filled and in pouring out the contents. By providing a recess in the body of the packaging bag having a spout, which allows the spout to maintain a stable shape, it can be made easier to hold with fingers.

FIG. 1 is a schematic plan view for explaining an embodiment of a packaging bag having a spout according to the present invention. FIG. 2 is a schematic plan view for explaining a state in which a branch of an embodiment of a packaging bag having a spout according to the present invention is lifted upward. FIG. 3 is a schematic cross-sectional view of the packaging bag having a spout according to the present invention, as viewed from the side, for explaining one embodiment. FIG. 4 is a schematic cross-sectional view for explaining a state in which a branch of an embodiment of a packaging bag having a spout according to the present invention is lifted upward. FIG. 5 shows an embodiment of a packaging bag having a spout according to the present invention, and is a schematic cross-sectional view for explaining a situation of pouring into another container by providing an opening. FIG. 6 is a schematic plan view for explaining another embodiment of the packaging bag having the spout according to the present invention.

Hereinafter, a more detailed description of the present invention will be added with reference to the drawings. However, the present invention is not limited to the examples shown here. The present invention is limited by the claims.

FIG. 1 is a schematic plan view for explaining an embodiment of a packaging bag having a spout according to the present invention.

The packaging bag having a spout according to the present invention is a packaging bag (100) having a spout, which is made of a laminate having a plastic film as a base material and having a sealant layer. The packaging bag (100) having this spout is composed of a body portion (1), a bottom portion (2), and a branch (3).

The torso (1) is composed of a front torso (4) and a rear torso (5) behind the anterior torso (4), which is not shown in the figure, and has left and right side ends ( 6), the upper end (7), and the lower end (12) are sealed. The sealing can be performed by, for example, heat sealing.

Further, in the lower part of the body portion (1), the bottom plate (8) is sealed between the front side body portion (4) and the rear side body portion (5). As a result, the bottom plate (8) forms an expandably sealed bottom portion (2) and is made into a packaging bag (100) having a spout.

That is, the bottom plate (8) portion has a lower end portion (12), a side end portion (6), and a seal portion (19).
The bottom (2) is sealed and a bag is made. Due to the structure of the bottom (2), after filling the contents and sealing the packaging bag, the bottom (2) expands in the front-rear direction in FIG. 1 to form the bottom surface, and the packaging bag has a spout. (100) becomes independent.

A branch (3) protruding from the front body portion (4) is formed on the upper portion of the front body portion (4). The branch (3) branches from the front trunk portion (4) at the height position (A) of the branch. The branch (3) is a folding line (22) at the height position (A) of the branch and can be folded upward or downward.

In the example shown in FIG. 1, the branch (3) includes a branch front film (9) extending from above the packaging bag of the front body portion (4) through the branch height position (A) and further downward to the packaging bag. The front body portion (4) is formed of a branched rear film (10) which is folded and extended at a folding line (22) at the height position (A) of the branch. However, since the branched rear film (10) is on the back surface of the branched (3) in FIG. 1, it is not specified.

The branched front film (9) was arranged behind the branched front film (9) and extended from below the packaging bag of the front body (4) by being folded back at the branch height position (A). It is superposed on the branch rear surface film (10) and sealed by a spout side end seal (24) and a spout seal portion (23) continuous thereto to form a branch (3).

When the contents are poured from this branch (3), the contents are folded upward, and the body portion (26) above the height position (A) of the branch is folded backward, which will be described later with reference to FIG. ..

Further, as shown in FIG. 1, the branch (3) may be provided with seal portions (25) at both ends thereof, but the seal portions (25) will be described later.

Further, this branch (3) has a tip portion (11) of the branch, and the spout is separated from the branch (3) by tearing the planned opening line (14) triggered by the notch (13). When the packaging bag (100) to be held is opened, it becomes a spout.

Further, the tip portion (11) of the branch provided in the branch (3) will be further described with reference to FIG.

Here, a detailed description will be given with specific examples of the materials that can be used to realize the packaging bag (100) having the spout according to the present invention according to the present invention, and the structure thereof.

As described above, the packaging bag (100) having a spout according to the present invention is made of a laminated body having a plastic film as a base material and having a sealant layer. The plastic film is a film made of a polymer resin composition, for example, polyolefin (polyethylene, polypropylene, etc.), polyester (polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, etc.), polyamide (nylon-6, nylon-66, etc.), Polyethylene or the like can be used and can be appropriately selected according to the application.

In particular, when polypropylene or polyethylene terephthalate is used as a plastic film, it is more preferable in terms of film strength and price. In addition, when a stretched polyamide film is used, it is possible to impart toughness against piercing and impact resistance to the laminated body.

Further, the plastic film can be laminated with another layer via an adhesive layer to form a laminated body. Therefore, the layer structure, the material structure, the thickness, and the like of the laminated body can be appropriately designed according to the required quality for the packaging bag.

Further, for the purpose of improving the storage stability of the contents, for example, an opaque layer that shields ultraviolet rays such as a colored film can be provided in the laminate, if necessary. Alternatively, a gas barrier layer can be provided in the laminate. As the gas barrier layer, in addition to a metal foil such as an aluminum foil, for example, a gas barrier film in which a gas barrier layer made of an inorganic compound or the like is provided on the surface of a plastic film can be used.

The sealant layer makes it possible to stack two laminated bodies so that the sealant layers face each other, and to bond them to each other by, for example, heating, pressurizing and heat-sealing, to make a bag in a packaging bag.

Of the thermoplastic resins, polyolefin resins are generally used as the material of the sealant layer, and specifically, low density polyethylene resin (LDPE), medium density polyethylene resin (MDPE), and linear low density polyethylene resin. Ethylene-based resins such as (LLDPE), ethylene-vinyl acetate copolymer (EVA), ethylene-α-olefin copolymer, and ethylene-methacrylic acid resin copolymer can be used.

In addition, a blend resin of polyethylene and polybutene, a polypropylene resin such as a homopolypropylene resin (PP), a propylene-ethylene random copolymer, a propylene-ethylene block copolymer, or a propylene-α-olefin copolymer should be used. Can be done.

To form the sealant layer, a molten resin can be formed by using an extruder or the like to form a layer on the laminate. Alternatively, it is also possible to form a sealant layer on the surface of the laminated body by laminating a material that has been formed into a film state in advance by laminating.

FIG. 2 is a schematic plan view for explaining a state in which a branch of an embodiment of a packaging bag having a spout according to the present invention is lifted upward.

In the packaging bag (100) having a spout according to the present invention, the branch (3) can be lifted in the direction of the arrow (16) in the figure and folded upward. That is, at the time of opening, the branch (3) is lifted above the packaging bag (100) having a spout, and the branch (11) is opened with the tip (11) facing upward. At this time, the body portion (26) above the height position (A) of the branch is bent and moves in the direction of the arrow (17) in the figure, that is, backward.

These occur at the same time because the laminated body is continuous at the branch (3) and the front body portion (4), and the body portion (26) above the height position (A) of the branch is shown in the figure. By moving in the direction of the arrow (17), the branch (3) can also be moved above the packaging bag (100) having the spout, that is, in the direction of the arrow (16) in the figure.

In addition, the body portion (26) above the height position (A) of this branch is bent backward and moves, which is also effective in securing a flow path and maintaining an opening when pouring out the contents. Acts as a target.

Further, in the examples shown in FIGS. 1 and 2, the seal portion (25) is shown. In the packaging bag having the spout according to the present invention, in the vicinity of the folding line (22) at the height position (A) of the branch, the both ends are at the bases of the upper side ends and the lower side ends of the branch. A seal portion (25) is provided inside the portion, and both end portions of the rear trunk portion facing the both ends of the upper portion of the front side trunk portion and both ends of the lower portion of the front side trunk portion and the above-mentioned A seal portion (25) is provided inside the side end portion. Sealed portions (25) at the upper end and the lower end of the branch are effective in facilitating the fold of the branch.

On the other hand, in the bottom portion (2), the sealing portions (19) at both ends are effective in sealing the front side body portion (4) and the rear side body portion (5) to further ensure the independence of the packaging bag. It is a target.

Further, the body portion (26) above the branch height position (A) is bent and moves in the direction of the arrow (17) in the figure, that is, behind the packaging bag.

As a result, the laminated body continuous from above the front body portion (4) of the branch (3) has a three-dimensional shape, and it is possible to stably form a flow path of the contents and stably hold the opening of the spout. It is also effective to do.

In a practical situation, when the tip (11) of the branch is pulled up and the packaging bag is opened and the spout is tilted downward to pour out the contents, the branch (branch) ( By forming a bulge in the center of the front body portion (4) in the width direction in 3) and the front body portion (4), it is possible to secure the flow path and maintain the open state of the spout without blocking the spout. Stable continuation of pouring of contents is possible.

The opening of the spout is torn along the planned opening line (14), triggered by the notch (13) shown at the tip of the branch (11), and the spout seal portion (23) is separated from the branch (3). Can be made by. A spout can be formed by separating the tip from this cut from the branch (3). These operations can be performed using fingers, scissors, or the like.

In order to make the planned opening line (14) easier and more stable to open, an easy opening mechanism can be used for the planned opening line.

In addition to the notch (13), this easy-opening mechanism provides a fragile part in the laminated body by, for example, a half cut, and utilizes the ease of tearing of the plastic film constituting the laminated body depending on the orientation direction of the molecule. , Can be the planned opening line (14).

That is, the contents of the packaging bag (100) having a spout are the tearing of the planned opening line (14) triggered by the notch (13) and the opening that appears by separating the tip (11) of the branch from the packaging bag. It becomes a spout for pouring things out.

FIG. 3 is a schematic cross-sectional view of the packaging bag having a spout according to the present invention, as viewed from the side, for explaining one embodiment.

In the example of FIG. 3 shown here, the contents are filled, the packaging bag (100) having a spout is in a sealed state, and the packaging bag (100) has the branch (3) folded downward. It is in a state of being. That is, the body portion (26) above the height position (A) of the branch is in a state of extending upward.

At this time, in the present invention, the distance (h) from the upper side of the body portion of the branch height position (A) is less than half of the distance (H) from the upper side (27) to the lower side of the body portion.
That is,
h ≦ H / 2
Is.

Within this range, the body portion (26) above the height position (A) of the branch, the folding of the branch (3), and the pouring of the contents can be performed without any trouble.

In addition, in the process of diligently examining the present invention, we found the following matters. In the present invention, at the branch height position (A), the distance (t1) between the front torso and the back torso is larger than 3 mm, and the distance between the front torso and the back torso at the bottom of the torso (t1). It is best to be smaller than T).

The results of the study at this time are shown in Table 1.

In Table 1,
Since the top surface is sealed, t1 cannot be more than T.
Further, t1 changes depending on the amount of the internal solution and air.

That is, as is clear from the results shown in Table 1, the optimum value of t1 is
3mm <t1 <T
Is.

Due to the interval of t1, a space is created in the body portion (26) above the height position (A) of the branch, and the bulge is filled with air or a liquid of the contents. As a result, when the contents are to be poured out, even when the branch (3) is turned upward, a space is created in the branch (3) above the height position (A) of the branch, and the bulge is formed. Can be filled with air or liquid of contents.

FIG. 4 is a schematic cross-sectional view for explaining a state in which a branch of an embodiment of a packaging bag having a spout according to the present invention is lifted upward.

In the example of FIG. 4 shown here, the packaging bag (100) having a spout is in a state where the branch (3) is lifted upward and folded back, and the body portion (26) above the height position (A) of the branch is formed. ) Is in the lower rear side, that is, in the state of being folded back in the direction of the arrow (28) in the figure. Therefore, the branch (3) extends upward.

Therefore, in this state, the branch rear film (10) faces the front side of the packaging bag (100) at a position higher than the branch height position (A).

In addition, in the process of diligently examining the present invention, we found the following matters. That is, in the packaging bag (100) having the spout according to the present invention, the distance between the branch front film (9) and the branch rear film (10) at the position of the planned opening line (14) of the branch (3) ( It is more appropriate that t2) is larger than 1 mm and smaller than the distance (T) between the front body and the rear body at the bottom of the body.

That is, the optimum value of t2 is
1mm <t2 <T
Is.

In addition, as a result of diligent studies, the laminated body in the present invention has a waist strength of 20 mN / 15.
It was found that it is more suitable to set it to mm or more. This is a numerical value measured using the Loop Stiffness Tester DA, and within this range, when the packaging bag (100) having a spout is used, the shape of the packaging bag and the spout is maintained and poured. It has sufficient rigidity for delivery work.

The results of the study at this time are shown in Table 2.

In Table 2, the pouch size is 95 mm in width and 180 mm in height.
Further, the height position of the branch is 70 mm.

As is clear from the results shown in Table 2, it is optimal that the waist strength of the laminated body is 20 mN / 15 mm or more.

FIG. 5 is a schematic cross-sectional view for explaining the situation of pouring out a packaging bag having a spout according to the present invention into another container by providing an opening.

In the example of FIG. 5 shown here, the packaging bag (100) having a spout has a spout seal portion (23) separated by cutting the planned opening line (14) at the tip of the branch (3) and pouring. A mouth (20) is provided. The entire packaging bag is tilted with the spout (20) facing downward, and the spout (20) is inserted into the mouth of the container (15) at the pouring destination.

The contents of the packaging bag flow downward by gravity along the flow path (21) and are transferred to the container (15) to be poured out as the contents (18) taken out through the spout (20). It is in a state.

When performing this pouring operation using fingers, hold the center of the torso with fingers. If necessary, pressure can be applied to the body of the packaging bag to promote pouring.

In the packaging bag (100) having a spout according to the present invention, when the branch (3) of the packaging bag is folded upward, and the body portion (26) above the height position (A) of the branch is When folded downward on the back side, the shape is maintained in a funnel shape with a bulge from the body to the branch (3) and the spout (20), so the pouring work is stable. It is possible to continue.

In this state, the spout (20) can be kept open even if the diameter of the spout (20) is increased for the purpose of reducing the flow path resistance. Therefore, the insertability into the container (15) at the pouring destination is not impaired.

FIG. 6 is a schematic plan view for explaining another embodiment of the packaging bag having the spout according to the present invention.

In the example shown in FIG. 6, in the body portion (1), recesses (29) from both the left and right sides are provided below the height (A) of the branch on both the left and right sides. The recess (29) may be provided according to the height (A) of the branch.

By providing the recess (29), the packaging bag (100) having the spout can be easily held by hand, so that the work of pouring the contents from the spout (20) can be made more stable. can.

As described above, in a packaging bag made of a laminated body having at least a plastic film as a base material and a sealant layer, the packaging bag is self-supporting when the contents are filled, and the spout portion has a stable shape when the contents are poured out. It is possible to provide a packaging bag with a spout that can hold.

1 ... Body 2 ... Bottom 3 ... Branch 4 ... Front body 5 ... Rear body 6 ... Side end 7 ... Top 8 ... Bottom plate 9・ ・ ・ Branch front film 10 ・ ・ ・ Branch rear film 11 ・ ・ ・ Branch tip 12 ・ ・ ・ Lower end 13 ・ ・ ・ Notch 14 ・ ・ ・ Scheduled opening line 15 ・ ・ ・ Pouring destination container 16 ・・ ・ Arrow 17 ・ ・ ・ Arrow 18 ・ ・ ・ Taken out contents 19 ・ ・ ・ Seal part 20 ・ ・ ・ Spout 21 ・ ・ ・ Flow path 22 ・ ・ ・ Folded line 23 ・ ・ ・ Spout seal part 24・ ・ ・ Spout side end seal 25 ・ ・ ・ Seal part 26 ・ ・ ・ Body part 27 above the height position of the branch ・ ・ ・ Upper side 28 of the body part ・ ・ ・ Arrow 29 ・ ・ ・ Recess 100 ・ ・ ・・ Packaging bag with spout A ・ ・ ・ Branch height position h ・ ・ ・ Distance from the upper side of the body H ・ ・ ・ Distance from the upper side to the lower side of the body T ・ ・ ・ Front body at the bottom of the body Spacing between the portion and the rear body t1 ... Spacing between the front body and the rear body t2 ... Spacing between the branched front film and the branched rear film

Claims (3)

A packaging bag having a spout, which is made of a laminate having at least a plastic film as a base material and having a sealant layer.
The packaging bag having the spout is composed of a body, a bottom, and a branch.
The torso is composed of a front torso and a back torso, with side ends and upper ends sealed.
At the bottom of the torso, a bottom plate is sealed between the anterior torso and the back torso to form an expandably sealed bottom.
At the upper part of the anterior trunk portion, a branch having a tip portion and projecting from the front trunk portion is formed.
The branch is a folding line at the height of the branch, and the laminated body continuous from the upper side of the front body portion and the laminated body continuous from the lower side of the front side body portion overlap each other so that the branch can be folded back to either the upper or lower side of the front side body portion. , Side edges and tips are sealed,
The tip is provided so as to be removable from the branch at the planned opening line, and a spout can be formed.
The distance from the upper side of the torso above the height position of the branch of the torso is less than half the distance from the upper side to the lower side of the torso.
Further, at the height position of the branch, the distance between the front torso and the back torso is larger than 3 mm and smaller than the distance between the front torso and the back torso at the bottom of the torso.
When the portion of the body above the height position of the branch is folded downward so that the branch is folded upward, the front side film of the branch and the back side film of the branch are formed at the position of the planned opening line of the branch. A packaging bag with a spacing of more than 1 mm and smaller than the spacing between the anterior and posterior torso at the bottom of the torso.
On both the left and right sides of the package, inside the seal at the side end, a seal portion continuously provided on the side end seal and straddling the folded line at the height of the branch is provided.
A packaging bag having a spout , wherein the seal portion straddling the folded line is composed of the following portions (a) to (c).
(A ) A portion that is located near the folding line and on the branch side from the folding line, and is sealed with the branch front side film and the branch back side film constituting the branch .
(B) A laminated body that is located near the turn-back line, is on the body side of the turn-around line, and is located above the turn-back line, and is continuous from above the front side body portion, and the rear side body portion is sealed. Part .
(C) At a position near the folded line and on the body side of the folded line.
A part located below the fold line and where the laminated body and the rear fuselage that are continuous from below the front fuselage are sealed . The packaging bag having a spout according to claim 1, wherein the laminated body has a waist strength of 20 mN / 15 mm or more. The spout according to claim 1 or 2, wherein the left and right sides of the body are provided with recesses from the left and right sides below the height of the branch or the height of the branch. Packaging bag to have.

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