JP7110555B2 - Packaging bag with spout nozzle - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag having a pouring nozzle among packaging containers. In particular, the present invention relates to a packaging bag that uses a plastic film as a base material and that allows the contents to be poured out more easily, and has a pouring nozzle that is manufactured by heat-sealing the peripheral edge. It is.

Conventionally, packaging bags made of a laminate having a sealant layer with a plastic film as a base material are not only composed of a single layer of plastic film other than the sealant layer, but also other films, resin layers, metal foils, etc. As a laminate, one of the features is that it is possible to design the layer structure and materials according to the required quality depending on the content, and it is widely used for various purposes.

In particular, packaging bags having a spout are excellent for pouring out fluid content. For example, it is widely used for beverages and foods, and is suitably used for paste-type foods as well as liquids. In addition, it is also used for seasonings such as miso, and it is advantageous in terms of performance and cost.

In addition, for example, if it is a liquid or paste content such as edible oil, sauce, beverages such as coffee drinks, food, 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 has excellent storage stability.

In general, packaging bags have the function of displaying the contents and storing them inside, protecting the contents from the external environment, and preserving them. In the case of fluids in particular, ease of pouring is important, and there are various forms and material configurations depending on the contents and purpose.

In particular, regarding the ease of pouring out, when taking out from the opening after opening the packaging bag, it is not only stable and easy to pour out, but it is inconvenient if the hands get dirty. It is desirable that the part is stable and keeps its shape.

However, in many cases, packaging bags having a sealant layer with a plastic film as a base material are heat-sealed at both ends of the opening by the sealant layer, and the flexibility of the plastic film makes it possible to maintain a stable shape. may not be possible and may interfere with stable and easy pouring. Alternatively, it has been pointed out that due to the resilience of the plastic film, there are cases where the opening tends to close as the content decreases.

If a stable shape cannot be maintained, the pouring operation itself is unstable, and there is a risk of causing problems such as spillage of the contents. Alternatively, if the opening closes while the contents are being poured out, the opening must be opened again, and the work with fingers is more difficult than opening a new one, and the contents will be removed. Not only is there a risk of spillage, but there is also the risk of staining the fingers, which has been an annoyance to consumers.

This is a common issue that needs to be improved regardless of whether the content is liquid or pasty. Conventionally, it has also been practiced to attach a spout to a packaging bag to improve ease of removal.

However, the plug and the sealing cap are generally made of molded plastic, which is not only disadvantageous in terms of cost, but also requires separation and sorting for disposal, resulting in bulky transportation efficiency. I'm holding

In addition, in Patent Document 1, a packaging bag having a sealant layer with a plastic film as a base material, particularly called a standing pouch, and a packaging bag having a branch in the body, a mountain fold ridgeline is a branch line in the lower front body There are proposals for two pouches formed with a space between them.

In Patent Document 2, a packaging bag having a plastic film as a base material and a sealant layer, which is particularly called a standing pouch and has a branch in the body, has a branch line in the upper center of the lower front body. By providing a first convex portion extending beyond and two second convex portions symmetrically to the first convex portion, two nozzle reinforcing surfaces are formed bilaterally symmetrically on both sides of the first convex portion. In addition, a third convex portion extending in the longitudinal direction of the nozzle is provided at the center of the pouring nozzle surface material, and a fourth convex portion is provided on the extension line of the third convex portion at the upper center of the pouch back surface material. I have a proposal for a pouch.

However, in any of the proposals in the patent documents, the pouch is provided with a convex line extending beyond the branch line of the lower front body part, and since there is a branch line in the middle of the convex line or the ridge line, the spout is not placed in the packaging bag. There is a difficulty that it is difficult to stand upright when facing upward. In addition, when the branch lines are folded, the convex lines or ridge lines overlap, creating a gap that may cause the content to enter the folded portion during filling.

JP 2005-313994 A JP 2008-44642 A

The present invention has been made in view of this situation, and provides a packaging bag made of a laminate having a sealant layer with a plastic film as a base material, and is self-supporting when filled with contents, and the contents can be poured. An object of the present invention is to provide a packaging bag having a pouring nozzle , which can maintain a stable shape and opening during pouring.

As a means for solving the above problems, the invention according to claim 1,
A packaging bag made of a laminate comprising a plastic film as a base material and a sealant layer,
The packaging bag is composed of a body portion, a bottom portion, and branches,
The body is composed of a front body part and a rear body part, and heat-sealed at the side ends and the upper end,
at the lower portion of the barrel, a bottom plate is heat sealed between the front and rear barrels to form an expandable sealed bottom;
A branch projecting from the front part of the trunk is formed in the upper part of the front part of the trunk,
The branch includes a branch front film extending from above the packaging bag beyond the height of the branch, and a rear film extending from below the packaging bag beyond the height of the branch. are superimposed and heat-sealed at their peripheries to form a pouring nozzle, and the tip of the pouring nozzle is provided so that at least part of it can be removed from the branch,
Removal of at least a portion of said tip allows the packaging bag to be opened to form a spout;
In the front part of the barrel, concave line processing extending downward from the vicinity of the height position of the branch is performed below the height position of the branch and on both sides of the center line in the width direction of the front part of the barrel. It is provided without entering the nozzle, and the recessed line processing is provided parallel to the longitudinal direction or spreading downward in a V shape ,
A packaging bag having a pouring nozzle, characterized in that no line work is provided across the height position of the branch .

In addition, the invention according to claim 2 is characterized in that the pour spout is formed by opening an easily unsealable unsealing line provided at the tip of the pouring nozzle. 3. A packaging bag having the pouring nozzle described in .

Further, the invention according to claim 3 is characterized in that the recessed line processing is provided as a continuous line, respectively. is a bag.

In addition, the invention according to claim 4 is characterized in that the recessed line processing is provided at positions symmetrical with respect to the center line in the width direction of the front part of the barrel. A packaging bag having the pouring nozzle according to any one of claims 3.

According to the fifth aspect of the invention, the recessed line processing is performed in an area below the height position of the branch in the front part of the barrel and between the lower end of the front part of the barrel and the height position of the branch. A packaging bag having the pouring nozzle according to any one of claims 1 to 4, characterized in that it is provided in the.

Further, the invention according to claim 6 is characterized in that a plurality of the recessed line processings are provided on either the left or right side or both sides with respect to the center line in the width direction of the trunk front portion. , a packaging bag having the dispensing nozzle according to any one of claims 1 to 5.

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In addition, the invention according to claim 7 is characterized in that the recessed line processing is performed by : the center line in the front width direction of the barrel; A packaging bag having a pouring nozzle according to any one of claims 1 to 6 , characterized in that it is provided in an area sandwiched by a straight line extending by connecting the left and right roots of the inner side. be.

In addition, the invention according to claim 8 is characterized in that the width of the recessed line processing is in the range of 0.5 mm to 5 mm. It is a packaging bag having an exit nozzle .

Further, the invention according to claim 9 is the pouring nozzle according to any one of claims 1 to 8 , characterized in that the recessed line processing is spaced from each other by 5 mm or more. It is a packaging bag with

According to the present invention, a packaging bag made of a laminate having a sealant layer with a plastic film as a base material is self-supporting when filled with contents , and the reinforcement of the contents flow path and the pouring nozzle is effective. It is possible to provide a packaging bag having a pouring nozzle which is effective and which can maintain a stable shape and opening when the contents are poured out.

In particular, according to the invention of claim 2, the packaging bag made of a laminate having a sealant layer with a plastic film as a base material is self-supporting when filled with contents, and when the contents are poured out, In addition to being able to provide a packaging bag having a pouring nozzle that maintains a stable shape and opening, it is possible to provide a packaging bag having a pouring nozzle that is easier to open and more convenient to use. is.

In particular, according to the invention of claim 3, the packaging bag made of a laminate having a sealant layer with a plastic film as a base material is self-supporting when filled with contents, and when the contents are poured out, It is possible to provide a packaging bag having a spouting nozzle in a simpler shape, in which the spouting nozzle can maintain a stable shape and opening.

In particular, according to the invention of claim 4, the packaging bag made of a laminate having a sealant layer with a plastic film as a base material is self-supporting when filled with contents, and when the contents are poured out, It is possible to provide a packaging bag having a pouring nozzle , in which the pouring nozzle can maintain a more stable shape and opening. In addition, the symmetrical line processing of the concave shape makes the appearance of the packaging bag more natural and desirable.

In particular, according to the invention of claim 5, the packaging bag made of a laminate having a sealant layer with a plastic film as a base material is self-supporting when filled with contents, and when the contents are poured out, It is possible to provide a packaging bag having a pouring nozzle , which can more effectively reinforce the content flow path and the pouring nozzle , and can maintain a more stable shape and opening.

In particular, according to the sixth aspect of the invention, the packaging bag made of a laminate having a sealant layer with a plastic film as a base material is self-supporting when filled with contents, and when the contents are poured out, Since the reinforcement of the contents channel and the pouring nozzle can be made stronger, it is possible to provide a packaging bag with the pouring nozzle that can maintain a more stable shape and opening.

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In particular, according to the invention of claim 7 , the packaging bag made of a laminate having a sealant layer with a plastic film as a base material is self-supporting when filled with contents, and when the contents are poured out, It is possible to provide a packaging bag having a pouring nozzle , which is more effective in securing the flow path for the contents, reinforcing the pouring nozzle , and maintaining a more stable shape and opening.

In particular, according to the invention of claim 8 , a packaging bag made of a laminate having a sealant layer with a plastic film as a base material is self-supporting when filled with contents, and when the contents are poured out, It is possible to provide a packaging bag having a pouring nozzle in which the reinforcement of the content flow path and the pouring nozzle is more effective, and which can maintain a more stable shape and opening.

In particular, according to the invention of claim 9 , the packaging bag made of a laminate having a sealant layer with a plastic film as a base material is self-supporting when filled with contents, and when the contents are poured out, It is possible to provide a packaging bag having a pouring nozzle in which the reinforcement of the content flow path and the pouring nozzle is more effective, and which can maintain a more stable shape and opening.

FIG. 1 is a schematic plan view for explaining one embodiment of a packaging bag having a pouring nozzle according to the present invention. FIG. 2 is a schematic plan view for explaining a state in which the branches of one embodiment of the packaging bag having the pouring nozzle according to the present invention are lifted upward. FIG. 3 is a schematic plan view for explaining a state in which the branch of one embodiment of the packaging bag having the pouring nozzle according to the present invention is lifted upward and the spout is opened. FIG. 4 is a schematic plan view for explaining the relationship between the body portion above the height position of the branch and the branch in a lifted state with respect to the packaging bag having the dispensing nozzle according to the present invention. FIG. 5 is a schematic perspective view for explaining the pouring state of the packaging bag having the pouring nozzle according to the present invention. FIG. 6 is a schematic plan view for explaining another embodiment and Claims 3 and 4 related to a packaging bag having a pouring nozzle according to the present invention. FIG. 7 is a schematic plan view for explaining one embodiment and claim 5 of a packaging bag having a pouring nozzle according to the present invention. FIG. 8 is a schematic plan view for explaining other embodiments and Claims 6 and 7 related to a packaging bag having a pouring nozzle according to the present invention.

Hereinafter, the present invention will be described in more detail with reference to FIGS. 1 to 8. FIG. However, the invention is not limited to the examples shown in these figures. The invention is limited by the claims.

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

A packaging bag having a pouring nozzle according to the present invention is a packaging bag (100) made of a laminate including a plastic film as a base material and a sealant layer. The packaging bag (100) has a trunk (
1), and bottom (2) and branch (3).

The torso (1) consists of a torso front part (4) and a torso rear part (5) behind the torso part (4) and not shown in FIG. ), and the top end (7) and the bottom end (12) are heat sealed.

In the lower part of the barrel (1), a bottom plate (8) is heat-sealed between the front barrel (4) and the rear barrel (5). The bottom plate (8) is thereby formed into a packaging bag (100) by forming an expandable sealed bottom (2).

That is, the bottom plate (8) is heat-sealed at the lower end (12), the side end (6), and the bottom plate heat-sealed portion (19), and the bottom (2) is sealed to form the bag. Due to this structure of the bottom part (2), after the contents are filled and sealed, the bottom part (2) expands in the front-rear direction shown in FIG. 1, thereby enabling the packaging bag (100) to stand on its own. .

A branch (3) projecting from the front body portion (4) is formed in the upper portion of the front body portion (4) of the packaging bag (100). The branch (3) branches off from the torso front part (4) at the branch height position (A). Branches (3) can also be folded upwards or downwards at the branch height position (A).

The branch (3) consists of a branch front film (9) further extended from the branch height position (A) from above the packaging bag of the front body part (4), and a branching front film (9) from below the packaging bag of the front body part (4). and a branched back film (10) further extended from the height position (A).

In the example shown in FIG. 1, the branched front film (9) is arranged behind the branched front film (9) and is positioned at the branch height position (A) from below the packaging bag of the front body (4). It is overlapped with the branch rear surface film (10) folded back and extended, sealed by the pouring nozzle side edge seal part (24) and the pouring nozzle tip seal part (23) continuous therewith, and the branch (3 ) is formed. A region surrounded by the pouring nozzle side edge seal portion (24) and the pouring nozzle tip seal portion (23) serves as the pouring nozzle.

Also, this branch (3) has a tip (11) of a pouring nozzle at the tip of the branch, and by cutting off at least a part of the tip (11) of the pouring nozzle, the packaging bag (100) is opened to form a spout.

In addition, in the present invention, in the front trunk portion (4), the branch height position (A) is below the branch height position (A) and on both sides of the center line (D) in the width direction of the trunk front portion (4). A concave line processing (15) is provided downward from the vicinity of the position .

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

In particular, when polypropylene or polyethylene terephthalate is used as a plastic film, it is preferable in terms of film strength and cost. In addition, when a stretched polyamide film is used, the laminate can be provided with toughness against puncture and toughness against impact.

Also, the plastic film can be laminated with another layer via an adhesive layer to form a laminate. The layer structure, material structure, thickness, etc. of the laminate can be appropriately designed according to the quality required for the packaging material.

For the purpose of improving the storage stability of the contents, for example, an opaque layer such as a colored film that blocks ultraviolet rays can be provided in the laminate, if necessary. Alternatively, a gas barrier layer can be provided in the laminate. For example, a gas barrier film obtained by providing a gas barrier layer on the surface of a plastic film can be used.

The sealant layer is made possible by stacking two laminates so that the sealant layers face each other, heat-pressing them, and heat-sealing them so that they adhere to each other and form a packaging bag.

Among thermoplastic resins, polyolefin resins are generally used as the material of the sealant layer. Specifically, low density polyethylene resin (LDPE), medium density polyethylene resin (MDPE), and linear low density polyethylene resin are used. (LLDPE), ethylene-vinyl acetate copolymer (EVA), ethylene-α-olefin copolymer, ethylene-methacrylic acid resin copolymer, blended resin of polyethylene and polybutene, homopolypropylene resin (PP), propylene-ethylene random copolymer, propylene-ethylene block copolymer, polypropylene-based resin such as propylene-α-olefin copolymer, and the like can be used.

The sealant layer can be formed by forming a film of molten resin 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 laminate by laminating materials that have been formed into films in advance.

FIG. 2 is a schematic plan view for explaining a state in which the branches of one embodiment of the packaging bag having the pouring nozzle according to the present invention are lifted upward.

This branch (3) can be lifted in the direction of the dashed arrow (16) in FIG. That is, the branch (3) is lifted above the packaging bag (100), and the tip (11) of the pouring nozzle is turned upward for use. At least a part of the tip (11) of the pouring nozzle is provided so that the heat-sealed portion and the inside thereof can be removed. can be provided.

This easy-to-open mechanism uses cuts (13), fragile parts in the laminate, and the ease of tearing in the stretching direction of the plastic film that constitutes the laminate. can be provided.

When pouring out the contents, the container can be opened by tearing the intended opening line (14) with fingers to form a pour spout. That is, the tearing of the planned opening line (14) triggered by the notch (13) and the separation of at least a part of the tip (11) of the pouring nozzle from the branch (3) create an opening that appears in the packaging bag ( 100) serves as a spout for pouring out the contents.

Further, as shown in FIG. 2, in the present invention, in the front part (4), the height position (A) of the branch is lower than the center line (D) in the width direction of the front part (4). On both sides, recessed line processing (15) extending downward from the vicinity of the height position of the branch is provided.

The formation of the recessed line processing (15) can be performed by applying heat and pressure to the laminate constituting the packaging bag, embossing, or the like.

With this recessed line processing (15), it is possible to increase the strength in the reinforcing effect of the channel and spout when pouring out the contents, and the channel and spout maintain a stable shape and opening. It becomes possible to

That is, when the pour spout is turned upward, the center of the width direction is widened by this concave line processing (15), so that when the packaging bag (100) is held by hand, branching (3) or pouring out occurs. The nozzle can maintain a stable shape without breaking, and when the spout is open, the swelling at the center in the width direction can maintain the open state, and the contents can be poured without clogging the spout. continuation of pouring is possible.

Also, by lifting this branch (3) in the direction of the dashed arrow (16) in FIG. It is bent in the direction of the solid arrow (26) in FIG.

Alternatively, the branch (3) is formed by bending the body above the height position (A) of the branch in the direction of the solid arrow (26) in FIG. It can also be lifted in the direction of the dashed arrow (16) in FIG. In either case, the movement is centered around the height (A) of the branch.

FIG. 3 is a schematic plan view for explaining a state in which the branch of one embodiment of the packaging bag having the pouring nozzle according to the present invention is lifted upward and the spout is opened.

As described above, when pouring out the contents (18), the packaging bag (100) is opened by, for example, tearing the intended opening line (14) for easy opening with fingers, and the spout (20) is opened. can be formed. In other words, the tearing of the planned unsealing line (14) triggered by the cut (13) and the separation of a part of the tip (11) of the pouring nozzle causes the opening to appear as the contents (18) of the packaging bag (100). It becomes a spout (20) for pouring out.

As shown in FIG. 3, the contents can be extracted from the branch (3) lifted upward of the packaging bag (100) and the spout (20) that appears by partially opening the tip (11) of the dispensing nozzle . (18) flows in the direction of arrow (17) in FIG. 3 and reaches the spout (20), making it possible to further pour out in the direction of arrow (25) in the figure.

The pouring can be performed by applying pressure to the body of the packaging bag (100), or by tilting the spout (20) together with the packaging bag (100) to pour out by gravity. This state will be described later in the description of FIG.

At this time, the recessed line processing (15) provided in the front part (4) of the body (4) reinforces the flow path of the contents (18), and when the contents (18) are poured out, the contents (18) Allows the flow channel and spout (20) to maintain a stable shape and opening.
That is, when the spout is turned upward as described above, the center portion in the width direction swells due to the concave line processing (15), so that when the packaging bag (100) is held by hand, the branch (3 ) and the pouring nozzle can maintain a stable shape without breaking, and when the spout (20) is open, the bulge at the center in the width direction can maintain the open state. It is possible to continue pouring out the contents (18) without blocking the mouth (20).

FIG. 4 is a schematic plan view for explaining the relationship between the body portion above the height position of the branch and the branch in a lifted state with respect to the packaging bag having the dispensing nozzle according to the present invention.
In the packaging bag (100) having a pouring nozzle according to the present invention, a branch (3) projecting from the front body part is formed in the upper part of the front body part, and the branch extends from the front body part (4). A branch front film (9) that extends beyond the branch height position (A) from above the packaging bag, and a front body part (4) that extends beyond the branch height position (A) from below the packaging bag. The branched rear surface film (10) is overlapped and heat-sealed at the side ends and the tip.

In the example shown in FIGS. 1 to 3, when the branch (3) is directed upward, the branch height (28) is higher than the trunk (27) above the branch height position. . On the other hand, in the example shown in FIG. 4, the branch height (28) is lower than the trunk (27) above the branch height position. It doesn't matter which one, and it doesn't matter if they are the same.

FIG. 5 is a schematic perspective view for explaining the pouring state of the packaging bag having the pouring nozzle according to the present invention.

As described above, by lifting the branch (3) in the direction of the dashed arrow (16), the body above the height position (A) of the branch is moved to the solid line on the rear body (5) side of the packaging bag. is bent in the direction of the arrow (26).

Alternatively, by bending the body above the height position (A) of the branch in the direction of the solid line arrow (26) on the side of the body rear (5) of the packaging bag, the branch (3) is changed to the broken line arrow ( 16) can also be lifted. In either case, the movement is centered around the height (A) of the branch.

In the example shown in FIG. 5, the state is viewed from above from the side of the trunk rear portion (5) of the packaging bag, and the contents are being poured out from the spout (20). The pouring out may be by tilting the packaging bag (100) to lower the pouring spout (20), by means of flow due to gravity, or by using a method of applying pressure to the body using fingers or the like, or both. may be used together.

Also, the branch is directed upwards of the packaging bag, and at the same time, the body (27) above the height of the branch is bent in the direction of the solid arrow (26) on the rear body (5) side of the packaging bag. . By bending the body (27) above the height of the branch downward in this way, the packaging bag (100) can be stably gripped by hand.

In addition, since the space in the branch (3) expands in the front-rear direction, the fluidity of the content (18) can be improved, which is effective in smoothing and stabilizing pouring from the spout (20). .

FIG. 6 is a schematic plan view for explaining another embodiment and Claims 3 and 4 related to a packaging bag having a pouring nozzle according to the present invention.

As described above, in the present invention, in the trunk front portion (4), the branch height position (A) is below the branch height position (A) and on both sides of the center line (D) in the width direction of the trunk front portion (4). , a concave line processing (15) extending downward from the vicinity of the height position of the branch is provided.

This recessed linework (15) can be formed by a continuous line, for example a straight line. When formed with a continuous line, it is possible to increase the strength of the reinforcing effect, and more effectively the flow path of the contents (18), the pouring nozzle and the spout (20) have a stable shape. It becomes possible to maintain the opening.

Any continuous line can be selected and used as the shape of the recessed line processing (15) as long as it has a reinforcing effect. The continuous line may be a straight line, a circular arc directed outward or inward, or a meandering curve.

In addition, as in the example shown in FIG. 6, this recessed line processing (15) can be provided at a symmetrical position with respect to the center line (D) in the width direction of the trunk front portion (4). That is, the flow path of the contents (18) is evenly reinforced from both sides by the two recessed lines (15), so that the flow path of the contents (18), the pouring nozzle and the spout (20) ) can maintain a more stable shape and aperture.

In addition, the recessed line processing (15) can be provided parallel to the longitudinal direction or spreading downward in the package bag (100) in an inverted V shape. The example shown in FIG. 6 is an example in which parallel continuous lines are provided.

This shape provides reinforcement along the flow path of the contents (18) towards the spout (20), i.e. the flow path from the barrel front (4) to the spout (20). Additionally, the flow path for the contents (18) and spout (20) can maintain a more stable shape and opening.

FIG. 7 is a schematic plan view for explaining one embodiment and claim 5 of a packaging bag having a pouring nozzle according to the present invention.

The recessed line processing (15) is performed in the front part (4) below the height position (A) of the branch and between the lower end (B) of the front part (B) and the height position (A) It can be provided in the hatched region in FIG. 7 above C).

This is what we found in the process of earnestly studying the present invention. When providing the recessed line processing (15) in this area, it is close to the branch height position (A) and its reinforcement Reinforcement is more effective as the effect extends directly to the flow path of the contents (18) and spout (20).

Moreover, even when the branch (3) is folded toward the bottom of the packaging bag (100), the concave line processing (15) is below the height position (A) of the branch. The valley fold line at the height position (A) of the branch is brought into close contact with the fold line without crossing the valley fold line at the height position (A).

Conversely, if the recessed line processing (15) straddles the valley fold line at the height position (A) of the branch, the shape of the recessed line processing (15) may be deformed by folding. In this case, there is a risk of impeding the reinforcing effect of the recessed wire processing (15).

Also, when the content (18) is filled from the upper end (7) of the packaging bag (100), the content (18) to be filled is folded in close contact with the valley fold line, so that the content (18) to be filled is at the height of the branch. There is no risk of entering branch (3) from position (A) and obstructing filling.

In addition, since the recessed line processing (15) is below the height position (A) of the branch, it does not cross the valley fold line at the height position (A) of the branch, and the valley fold line is in close contact. By folding, even after the packaging bag (100) is manufactured and before filling, there is no risk of being bulky or hindering stacking, and the recessed line processing (15) itself is not deformed or damaged. It is convenient because it does not give

FIG. 8 is a schematic plan view for explaining other embodiments and Claims 6 and 7 related to a packaging bag having a pouring nozzle according to the present invention.

In the packaging bag (100) according to the present invention, a plurality of recessed lines (15) are provided on either or both sides of the center line (D) in the width direction of the front body (4). can be done.

The example shown in FIG. 8 is an example in which two recessed line machining (15) are provided bilaterally symmetrically on both sides with respect to the center line (D). These multiple recessed lines (15) allow for greater and more effective reinforcement to the spout (20).

In addition, as a result of extensive studies, we have found that the recessed line processing (15) is the center line (D) in the width direction of the front part (4) and the inside of the container at the tip seal part (23) of the pouring nozzle . It can be provided in an area sandwiched between the center (21) and the straight line (F) extending by connecting the left and right roots (22) of the pouring nozzle side edge seal part (24) inside the container, and the spout ( 20) and securing the flow path are more effective. This range is indicated in FIG. 8 by the arc arrow between the straight line (F) and the center line (D).

In addition, as a result of extensive studies, we have found that the width of the recessed line processing (15) can be in the range of 0.5 mm to 5 mm, and that this range is suitable for the spout (20). It has been found that the reinforcement can be made more effective.

In addition, as a result of extensive studies, we have found that the recessed line processing (15) can be spaced from each other by 5 mm or more. It has been found that the reinforcement can be made more effective.

That is, the recessed line processing (15) provided in the front part (4) of the barrel (4) reinforces the flow path of the contents (18), and when the contents (18) are poured out, the flow of the contents (18) is suppressed. It allows the channel and spout (20) to maintain a stable shape and opening.
In addition, when the spout (20) is turned upward, the center of the width direction swells due to the concave line processing (15), so that when the packaging bag (100) is held by hand, the branch (3 ) can maintain a stable shape without breaking, and when the spout is open, the swelling at the center in the width direction can maintain the open state, and the spout (20) can be closed. It is possible to stably continue to pour out the contents without any trouble.

As described above, according to the present invention, a packaging bag made of a laminate having a sealant layer with a plastic film as a base material is self-supporting when filled with contents, and when the contents are poured out, the spout portion It is possible to provide a packaging bag with a dispensing nozzle that can maintain a stable shape and opening.

REFERENCE SIGNS LIST 1 trunk portion 2 bottom portion 3 branch 4 front trunk portion 5 rear trunk portion 6 side end portion 7 upper end portion 8 bottom plate 9・Branch front film 10...Branch rear face film 11... Tip part of pouring nozzle 12... Lower end part 13... Notch 14... Anticipated opening line 15... Recessed line processing 16. ... Arrow 17 ... Arrow 18 ... Contents 19 ... Bottom plate heat-sealed portion 20 ... Spout 21 ... Center inside container 22 ... Left and right bases inside container 23 ... Spout nozzle tip seal
24... Pour out nozzle side edge seal part
25...Arrow 26...Arrow 27...Body part 28 above branch height position...Branch height 100...Packaging bag A...Branch height position B...・Lower end of the front part of the torso C・・・Intermediate D・・・Center line F・・・Straight line

Claims (9)

A packaging bag made of a laminate comprising a plastic film as a base material and a sealant layer,
The packaging bag is composed of a body portion, a bottom portion, and branches,
The body is composed of a front body part and a rear body part, and heat-sealed at the side ends and the upper end,
at the lower portion of the barrel, a bottom plate is heat sealed between the front and rear barrels to form an expandable sealed bottom;
A branch projecting from the front part of the trunk is formed in the upper part of the front part of the trunk,
The branch includes a branch front film extending from above the packaging bag beyond the height of the branch, and a rear film extending from below the packaging bag beyond the height of the branch. are superimposed and heat-sealed at their peripheries to form a pouring nozzle, and the tip of the pouring nozzle is provided so that at least part of it can be removed from the branch,
Removal of at least a portion of said tip allows the packaging bag to be opened to form a spout;
In the front part of the barrel, concave line processing extending downward from the vicinity of the height position of the branch is performed below the height position of the branch and on both sides of the center line in the width direction of the front part of the barrel. It is provided without entering the nozzle, and the recessed line processing is provided parallel to the longitudinal direction or spreading downward in a V shape ,
A packaging bag having a pouring nozzle, characterized in that no line work is provided across the height position of the branch . 2. The packaging bag having a pouring nozzle according to claim 1, wherein said spout is formed by opening an easily openable opening line provided at the tip. 3. The packaging bag having a pouring nozzle according to claim 1 or 2, wherein each of the recessed line processing is provided as a continuous line. The pouring according to any one of claims 1 to 3, characterized in that the recessed line processing is provided at a symmetrical position with respect to the center line in the width direction of the front part of the barrel. A packaging bag with a nozzle. The recessed line processing is provided in a region below the height position of the branch in the front part of the barrel and in an area between the lower end of the front part of the barrel and the height position of the branch. A packaging bag having the dispensing nozzle according to any one of claims 1 to 4. 6. A plurality of the recessed line processings are provided on one side or both sides of the center line in the width direction of the front part of the body. A packaging bag having the pouring nozzle according to 1. The recessed line processing is extended by connecting the center line in the width direction of the front part of the body, the center of the pouring nozzle tip seal part inside the container, and the left and right roots of the pouring nozzle side edge seal part inside the container. A packaging bag having a pouring nozzle according to any one of claims 1 to 6, characterized in that it is provided in a region sandwiched between straight lines. The packaging bag having a pouring nozzle according to any one of claims 1 to 7, characterized in that the recessed line processing has a width in the range of 0.5mm to 5mm. The packaging bag having a pouring nozzle according to any one of claims 1 to 8, characterized in that the recessed lines are spaced apart from each other by 5 mm or more.

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