JP7006148B2 - Packaging bag with spout - Google Patents

Description

The present invention relates to a packaging bag among packaging containers. In particular, a packaging bag made of a plastic film as a base material, which can more easily pour out the contents, and which is made by heat-sealing the peripheral portion and has a spout. Is.

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 heat-sealed by the sealant layer, and the flexibility of the plastic film allows the packaging bag to maintain a stable shape. It may not be possible, and 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 is there a risk of spilling, but there is also the risk of the fingers getting dirty, which has plagued 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 patented 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 the contents, 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. 5-32069 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 in a packaging bag made of a laminate having a sealant layer as a base material of a plastic film, it is self-supporting when the contents are filled and the contents are poured. It is an object of the present invention to make it possible to provide a packaging bag having a spout, which allows the spout to maintain a stable shape and opening in the spout.

The invention according to claim 1 is a means for solving the above problems.
A packaging bag made of a laminate having a sealant layer as a base material of a plastic film.
The packaging bag is composed of a body, a bottom, and a branch.
The torso is composed of an anterior torso and a back torso, and the side end and the upper end are heat-sealed.
At the bottom of the fuselage, a bottom plate is heat-sealed between the anterior fuselage and the rear fuselage to form an expandably sealed bottom.
The anterior torso is formed with a branch extending from the anterior torso with a tip.
In the branch, the root of the overhanging portion can be folded up and down as a folding line, 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 are overlapped on the side. The ends and tips are heat-sealed and become
The tip is provided removable from the branch so that the packaging bag can be opened to form a spout.
A half-cut line is provided on the outer surface of the packaging bag beyond the fold line toward the spout from below the front body , but does not reach the spout .
The half-cut line is characterized in that when the branch is folded downward by the folding line, the branch is provided only on the front body of the region covered by the branch and the surface of the continuous branch. , A packaging bag with a spout.

Further, the invention according to claim 2 is based on the invention.
The package having the spout according to claim 1, wherein the spout is formed by opening an easily openable planned opening line provided at the tip of a branch. It is a bag.

Further, the invention according to claim 3 is based on the invention.
The half-cut wire is a packaging bag having a spout according to claim 1 or 2, wherein the half-cut wire is provided with a plurality of wires.

Further, the invention according to claim 4 is the invention.
The packaging bag having a spout according to claim 3, wherein the half-cut line is provided at a position symmetrical with respect to the center line in the width direction of the front body portion.

Further, the invention according to claim 5 is
The packaging bag having a spout according to any one of claims 1 to 4, wherein the half-cut wire is provided as a continuous or discontinuous wire.

Further, the invention according to claim 6 is based on the invention.
The packaging bag having the spout according to any one of claims 1 to 5, wherein the half-cut wire has a width of 0.5 mm or less and a depth in the range of 5 μm to 50 μm. Is.

According to the present invention, in a packaging bag made of a laminated body having a sealant layer as a base material of a plastic film, the packaging bag is self-supporting when the contents are filled, and the spout portion is stable when the contents are poured out. Can retain shape and opening.

In particular, according to the invention of claim 2, in a packaging bag made of a laminate having a sealant layer as a base material of a plastic film, the packaging bag is self-supporting when the contents are filled, and in pouring out the contents. Since the spout portion can maintain a stable shape and opening, it is possible to provide a packaging bag having a spout, and the opening operation prior to pouring can be performed more easily. It is possible to make a packaging bag that is more convenient to use.

In particular, according to the third aspect of the present invention, in a packaging bag made of a laminate having a sealant layer as a base material of a plastic film, the packaging bag is self-supporting when the contents are filled, and also in pouring out the contents. The spout can maintain a more stable shape and opening.

That is, by providing a plurality of half-cut lines, the bulge of the laminated body and the flow path of the contents are more effectively formed in the branch and the front body portion continuous thereto, and the contents are poured out. The flow path of the contents and the spout can maintain a more stable shape and opening.

In particular, according to the invention of claim 4, in a packaging bag made of a laminate having a sealant layer as a base material of a plastic film, the packaging bag is self-supporting when the contents are filled, and also in pouring out the contents. The spout can be more balanced left and right to maintain a stable shape and opening.

That is, since the half-cut line is provided at a position symmetrical with respect to the center line in the width direction, the bulge of the laminated body of the branch and the anterior trunk portion continuous with the branch is balanced left and right, and in a more natural form. The flow path of the contents is formed more naturally. This is also effective for stable pouring.

In particular, according to the invention of claim 5, in a packaging bag made of a laminate having a sealant layer as a base material of a plastic film, the packaging bag is self-supporting when the contents are filled, and also in pouring out the contents. The spout can maintain a stable shape and opening.

That is, the half-cut line can be not only a continuous line but also a discontinuous line, the degree of freedom of the half-cut processing method is increased, and the strength of the half-cut portion can be improved.

In particular, according to the invention of claim 6, the contents are in a packaging bag made of a laminate having a sealant layer using a plastic film as a base material by keeping the width and depth of the half-cut line within a certain range. It is self-supporting when filled, and the spout can more effectively maintain a stable shape and opening when pouring the contents.

Further, according to the present invention, by setting the position where the half-cut wire is provided within a certain range, independence when the contents are filled in a packaging bag made of a laminated body having a sealant layer as a base material of a plastic film. In addition, the spout portion can more effectively maintain a stable shape and opening when pouring out the contents.

Further, since the exposure of the half-cut line before opening can be avoided, it is possible to prevent accidental opening or bag breakage during transportation or handling.

FIG. 1 is a schematic plan view for explaining an embodiment (a state in which a branch faces upward) according to a packaging bag having a spout according to the present invention. FIG. 2 is a schematic plan view for explaining an embodiment (a state in which a branch faces downward) according to a packaging bag having a spout according to the present invention. FIG. 3 is a schematic plan view for explaining a state in which the spout is opened, which is a branch of one embodiment of the packaging bag having the spout according to the present invention. FIG. 4 is a schematic plan view for explaining another embodiment of the packaging bag having a spout according to the present invention, in which a plurality of half-cut lines are provided and symmetrically provided. FIG. 5 is a schematic plan view for explaining still another embodiment of the packaging bag having a spout according to the present invention, in which the half-cut line is provided by a discontinuous straight line. FIG. 6 is a schematic plan view for explaining a state in which a half-cut line is provided and a branch is directed downward according to an embodiment of a packaging bag having a spout according to the present invention. FIG. 7 is a schematic plan view for explaining a region in which a half-cut line is provided, which is an embodiment of the packaging bag having a spout according to the present invention. FIG. 8 is a schematic plan view for explaining Example 1 of the packaging bag having a spout according to the present invention. FIG. 9 is a schematic plan view for explaining Comparative Example 1 relating to a packaging bag having a spout according to the present invention. FIG. 10 is a schematic plan view for explaining Comparative Example 2 relating to a packaging bag having a spout according to the present invention. FIG. 11 is a plane (partially perspective view) for explaining a case where the branch is a quadrilateral and has a spout, which is still another embodiment of the packaging bag having a spout according to the present invention. It is a schematic diagram.

Hereinafter, a more detailed description of the embodiment for carrying out the present invention will be added with reference to the drawings of the present invention. However, the present invention is not limited to the examples shown in these figures. The present invention is limited by the claims.

FIG. 1 is a schematic plan view for explaining an embodiment (a state in which a branch faces upward) according to a packaging bag having a spout according to the present invention.

Further, FIG. 2 is a schematic plan view for explaining an embodiment (a state in which the branch faces downward) according to the packaging bag having the spout according to the present invention.

The packaging bag having a spout according to the present invention is a packaging bag (100) made of a laminate having a plastic film as a base material and a sealant layer. The packaging bag (100) 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 portion (7), and the lower end portion (12) are heat-sealed.

Further, in the lower part of the body portion (1), the bottom plate (8) is heat-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).

That is, the bottom plate (8) is heat-sealed at the lower end portion (12), the side end portion (6), and the bottom plate heat-sealed portion (19), and the bottom portion (2) is sealed to make a bag. Due to the structure of the bottom (2), after the contents are filled and sealed, the bottom (2) expands in the front-rear direction in FIGS. 1 and 2, so that the packaging bag (100) can stand on its own. It will be possible.

The front body portion (4) is formed with a branch (3) protruding from the packaging bag (100) from 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) can be folded upward or downward at the folding line (22) at the height position (A) of the branch.

In FIG. 1, the branch (3) extends from above the packaging bag of the front body portion (4) to the lower part of the packaging bag through the branch height position (A), although not shown in this figure, and is folded back. The branched front film (9) and the branched rear film (10) in which the front body portion (4) is further extended from the lower part of the packaging bag by the folding line (22) at the branch height position (A). Consists of.

As shown in FIG. 2, the branched front film (9) is superposed on the branched rear film (10) arranged behind the branched front film (9), and the spout side end heat seal (9). 24) and a spout heat seal (23) contiguous with it are sealed to form a branch (3).

Further, in the present invention, a half-cut line (15) is provided on the outer surface of the packaging bag from below the front body portion (4) toward the spout beyond the folding line (22) at the height position (A) of the branch. Has been done. However, in the example shown in FIG. 2, the half-cut line (15) is provided on the back side of the downward branch (3) and the surface of the front body portion (4), and is not shown.

Further, the tip portion (11) of the branch is provided so that the heat-sealed portion and the inside thereof can be removed. The removing means can be, for example, cutting with a knife, but as a simpler method, a removing means using fingers is also possible. For example, an easy opening mechanism is provided by a notch (13), an planned opening line (14), or the like. This makes it easy to open the package.

This easy-opening mechanism uses a notch (13), a fragile part in the laminated body, and the ease of tearing of the plastic film constituting the laminated body depending on the orientation direction of the molecule. It can be provided as 14).

When pouring out the contents, the easy-opening mechanism can be used to open the planned opening line (14) by tearing it with a finger or the like to form a spout. That is, 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 pour out the contents of the packaging bag (100). It becomes a spout.

As described above, the packaging bag (100) according to the present invention is made of a laminate 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 it is 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 example, for the purpose of improving the storage stability of the contents, if necessary, an opaque layer such as a colored film that shields ultraviolet rays can be provided in the laminate. Alternatively, a gas barrier layer can be provided in the laminate. For example, a gas barrier film having a gas barrier layer provided on the surface of the plastic film can be used.

The sealant layer makes it possible to stack two laminated bodies so that the sealant layers face each other, heat and pressurize them to heat-seal them, and adhere them to each other 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. (LLDPE), ethylene-vinyl acetate copolymer (EVA), ethylene-α-olefin copolymer, ethylene-methacrylic acid resin copolymer and other ethylene-based resins, polyethylene-polybutene blend resin, homopolypoly resin Polypropylene-based resins such as (PP), a propylene-ethylene random copolymer, a propylene-ethylene block copolymer, and a propylene-α-olefin copolymer can be used.

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.

The branch (3) can be lifted in the direction of the arrow (16) in FIG. That is, the branch (3) is lifted above the packaging bag (100), and the tip portion (11) of the branch is used facing upward. At this time, the anterior trunk portion (4) above the branch height position (A) is folded backward in the direction of the arrow (17) in the figure.

In the present invention, the bulge of the flow path due to the half-cut line (15) is formed by holding both ends of the front body portion (4) above the height position (A) of the branch (3) so as to be grasped by hand. It can be formed more effectively and retain its flow path in the pouring of the contents.

At this time, the tip end portion (11) of the branch is placed at the bottom of the packaging bag (100) in that state so that the entire packaging bag (100) can be tilted and used when the contents are taken out from the spout. To position.

In FIGS. 1 and 2, the body portion above the branch height position (A) can be moved in the direction of the arrow (17) in the figure, that is, behind the packaging bag. By folding the body portion above the height position (A) of the branch rearward, it effectively acts to hold the opening in the pouring of the contents.

In this way, the bulge of the laminate and the flow path of the contents are formed in the branch (3) and the front body portion (4) continuous thereto, and in the pouring of the contents, the flow path of the contents and the flow path of the contents are formed. The spout can maintain a stable shape and opening.

Further, as shown in FIG. 2, in the present invention, the half-cut line (15) crosses the folding line at the height position (A) of the branch and is on the outer surface of the packaging bag from the lower part of the front body toward the spout. Is provided.
The bulge of the laminated body and the flow path of the contents are formed in the branch (3) and the front body portion (4) continuous to the branch (3) by the half-cut line (15), and the flow of the contents is formed in the pouring of the contents. The path and spout can maintain a stable shape and opening.

That is, when the tip portion (11) of the branch is pulled upward, the half-cut wire (15) allows the contents to flow without breaking the branch (3) when the packaging bag (100) is held by hand. It is possible to secure a road and maintain a stable shape.

That is, when the contents of the packaging bag are taken out from the spout, the tip (11) of the branch is lifted upward and the spout is opened. Can be stabilized.

In addition, since the solid of the branch (3) part is formed in a funnel shape toward the spout, it is easy to insert the spout into another container and transfer it to another container. It is possible to work on. Therefore, in the packaging bag having the spout according to the present invention, the state of the opening can be smoothly maintained, and the pouring of the contents can be continued without the spout being blocked.

The formation of the half-cut line (15) does not impose restrictions on the formation method. For example, the half-cut line (15) is formed by half-cut processing with a cutting tool or irradiation with a laser beam on the laminate constituting the packaging bag. Can be done.

However, when a gas barrier layer or the like is provided in the laminated body, for example, penetrating the gas barrier layer will hinder the gas barrier performance and must be avoided.

As a result of diligent studies in the process of studying the present invention, it is found that the half-cut line (15) has a width of 0.5 mm or less and a depth of 5 μm to 50 μm. It has been found that the effect of the formation of (15) and the formed half-cut line (15) on the formation of the flow path and its retention is more preferable.

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

As described above, when pouring out the contents (18), the spout (20) can be formed by opening the planned opening line (14), which can be easily opened, by tearing it with a finger.

That is, the opening that appears due to the tearing of the planned opening line (14) triggered by the notch (13) and the separation of the tip portion (11) of the branch is for pouring out the contents (18) of the packaging bag (100). It becomes the spout (20).

As shown in FIG. 3, the contents (18) are directed toward the flow path (21) from the branch (3) lifted above the packaging bag (100) and the spout (20) that appears by opening the branch (3). It flows and reaches the spout (20), and is further poured out from the spout (20) to the outside of the packaging bag.

For pouring, the packaging bag (100) can be tilted to hold the spout (20) downward to perform pouring by gravity, or pressure can be applied to the body of the packaging bag (100). Can be poured out.

At this time, due to the half-cut line (15) provided on the front body portion (4), the bulge of the laminated body and the flow path of the contents (18) are connected to the branch (3) and the front body portion (4) continuous thereto. (21) is formed, and when the content (18) is poured out, the flow path (21) and the spout (20) of the content (18) can maintain a stable shape and opening.

The body portion above the branch height position (A) is tilted in the direction of the arrow (17) in FIG. 3, that is, behind the packaging bag, so that the contents can be poured out from the flow path (21). It acts more effectively in retaining the opening of the opening (20).

That is, when the spout (20) is turned up as described above, the flow path (21) is formed by the half-cut wire (15), for example, in a funnel shape, whereby the packaging bag (100) is formed. ) By hand, the front side body (4) and the branch (3) can be maintained in a stable shape without breaking.

That is, in the state where the spout (20) is open, the state of the flow path (21) and the opening can be maintained by the bulge at the center in the width direction of the branch (3) and the front body portion (4). It is possible to continue pouring the contents (18) without blocking the spout (20).

FIG. 4 is a schematic plan view for explaining another embodiment of the packaging bag having a spout according to the present invention, in which a plurality of half-cut lines are provided and symmetrically provided.

In the packaging bag having the spout according to the present invention, the half-cut wire (15) can be provided by a plurality of wires. In the example shown in FIG. 4, three half-cut lines (15) are provided in a straight line.

Further, these three half-cut lines (15) are formed so as to straddle the folding line (22) at the height position (A) of the branch, and the tip portion (11) of the branch is opened and the contents are poured. At the time of delivery, it is more effective to form and maintain the flow path (21).

That is, by providing a plurality of half-cut lines, the bulge of the laminated body and the flow path (21) of the contents (18) are more effective in the branch (3) and the front body portion (4) continuous with the branch (3). The flow path (21) and the spout (20) of the content (18) can maintain a more stable shape and opening in the pouring of the content (18).

Further, the half-cut line (15) can be provided at a position symmetrical with respect to the center line (D) in the width direction of the front body portion (4). In the example shown in FIG. 4, one is provided along the center line (D) in the width direction, and three straight lines are provided at symmetrical positions on both the left and right sides thereof.

By providing the half-cut line (15) at a position symmetrical with respect to the center line (D) in the width direction, the bulge of the laminated body of the branch (3) and the front body portion (4) continuous to the branch (3) is increased. The left-right balance is achieved, and the flow path (21) of the content (18) is formed more naturally without bias. This is also effective for stable pouring.

Further, these three lines are formed so as to straddle the folding line (22) at the height position (A) of the branch, and the flow path (21) is used when opening the tip portion (11) of the branch and pouring out the contents. ) It is more effective in forming and retaining it.

That is, since a plurality of half-cut lines are provided at symmetrical positions, the bulge of the laminated body and the flow path of the contents (18) are formed in the branch (3) and the front body portion (4) continuous with the branch (3). 21) is formed in a natural shape with left-right balance, and has a reinforcing effect on the folded line (22).

Further, even when the content (18) is poured out, the flow path (21) and the spout (20) of the content (18) can maintain a more stable shape and opening.

FIG. 5 is a schematic plan view for explaining still another embodiment of the packaging bag having a spout according to the present invention, in which the half-cut line is provided by a discontinuous straight line.

In the packaging bag having the spout according to the present invention, the half-cut line (15) can be provided as a discontinuous line. In the figure shown here, the half-cut line (15) is an example provided by a single straight discontinuous line.

The half-cut line (15) is effective for forming a continuous line to stably form and hold the flow path, but it is effective for the mechanical strength of the half-cut portion and the stable formation of the flow path. Considering the above, it does not matter if it is a discontinuous line.

Therefore, as long as it has the required mechanical strength of the half-cut portion and the effect on the stable formation of the flow path, the branch (3) and the branch (3) are provided by the half-cut wire (15) provided on the front body portion (4). The bulge of the laminated body and the flow path (21) of the contents (18) are formed in the continuous front body portion (4), and the flow path (18) of the contents (18) is formed in the pouring of the contents (18). 21) and the spout (20) can maintain a stable shape and opening.

That is, even in the example shown in FIG. 5, in the state where the spout (20) is open, the flow path is caused by the bulge of the branch (3) and the center of the front body (4) and the branch (3) in the width direction. And the state of the opening can be maintained, and the pouring of the content (18) can be continued without the spout (20) being blocked.

FIG. 6 is a schematic plan view for explaining a state in which a half-cut line is provided and a branch is directed downward according to an embodiment of a packaging bag having a spout according to the present invention.

FIG. 6 shows a state in which the branch (3) is directed downward, but when the branch (3) is lifted upward, a half cut provided on the front torso (4), which is not shown in FIG. The line (15) causes the branch (3) and the anterior body (4) continuous to the branch (3) to have a three-dimensional shape, and the bulge of the laminated body stably forms the flow path (21) of the contents (18). Has the effect of being retained.

At this time, the body portion above the branch height position (A) is folded 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) is pulled, which is effective in holding the opening of the spout (20).

That is, in a state where the tip portion (11) of the branch is pulled up and the spout (20) is open, the flow path and the opening are opened by the bulge of the central portion in the width direction of the branch (3) and the front body portion (4). The state can be maintained, and the pouring of the content (18) can be stably continued without the spout (20) being blocked.

FIG. 7 is a schematic plan view for explaining a region in which a half-cut line is provided, which is an embodiment of the packaging bag having a spout according to the present invention.

In the present invention, the half-cut line is inside the container from the scheduled opening line (14), and the branch (3) is folded downward at the folding line (22) at the height position (A) of the branch. At that time, it can be provided on the surface of the front body portion (4) and the continuous branch (3) in the area covered by the trapezoidal portion of the branch (3).

That is, the half-cut line (15) can be provided inside the area (B) of the half-cut line in the example shown in FIG. 7, and in this case, the half is half when the branch (3) is folded downward. Since it is possible to prevent the cut line (15) from being exposed, it is possible to avoid the possibility that the half-cut line (15) will be damaged and cause liquid leakage due to an external force. preferable.

Further, the region (B) of this half-cut line is a region where the trapezoid of the branch (3) faces the spout, and is also a region that directly affects the formation of the flow path. The provision is more effective in forming the flow path and maintaining the opening.

As yet another embodiment, an example is shown in which the branch (3) is not a tapered convex shape. FIG. 11 is a plane (partially perspective view) for explaining a case where the branch is a quadrilateral and has a spout, which is still another embodiment of the packaging bag having a spout according to the present invention. It is a schematic diagram. In this case, in the branch (3) shown in the schematic perspective view, one side of the quadrilateral on the side close to the spout (20) is the tip portion.

In the example shown here, the branch (3) is a quadrilateral and has a spout (20), and even in this case, an opening is formed by opening the planned opening line (14). ..

Therefore, as in the description using FIGS. 1 to 7, in the packaging bag (100) made of a laminate having a sealant layer as a base material of a plastic film, the packaging bag (100) is self-supporting when the contents are filled, and the contents are also self-supporting. It is possible to provide a packaging bag (100) having a spout, which allows the spout to maintain a stable shape and opening in the pouring.

Hereinafter, the present invention will be described in more detail with reference to Examples and FIGS. 8 to 10. However, the present invention is not limited to the examples shown here. The present invention is limited by the claims.

A packaging bag having a spout was evaluated by preparing three types of evaluation samples, Example 1, Comparative Example 1, and Comparative Example 2.
Each evaluation sample is the same in packaging bag size, seal width, and spout opening width.

The material composition of the laminate constituting the packaging bag is as follows.
Body and branch: From the outside of the packaging bag
Stretched polyamide film (thickness 15 μm) / Aluminum-deposited polyethylene terephthalate film (thickness 12 μm) / Low-pressure method low-density polyethylene (thickness 100 μm).
Bottom plate: From the outside of the packaging bag
Stretched polyamide film (thickness 15 μm) / low pressure method low density polyethylene (thickness 100 μm).

<Example 1>
According to the present invention, it is a packaging bag having a spout and having a half-cut wire.
The half-cut line was a half-cut line obtained by laser processing.
FIG. 8 is a schematic plan view of the first embodiment.

<Comparative Example 1>
It is a conventional packaging bag having a spout, which is not according to the present invention, and is provided with a convex ribbed wire (26) instead of a half-cut wire.
FIG. 9 is a schematic plan view of Comparative Example 1.

<Comparative Example 2>
It is a conventional packaging bag having a spout, which is not according to the present invention, and is not provided with a half-cut wire and is not provided with a convex ribbed wire.
FIG. 10 is a schematic plan view of Comparative Example 2. The evaluation method is as follows.
Each sample was filled with 340 ml of household shampoo and the filling openings were heat-sealed and sealed.
The number of samples was n = 5.
It was opened and refilled into another container for evaluation.

The evaluation items are as follows.
Presence or absence of spillage: The number of samples in which spillage occurred.
Remaining amount: The average value of the weight (g) of the contents remaining after the refilling is completed.
Refill time: The average value of the time (seconds) until the refilling work to other containers was completed after opening the packaging bag was used.

The evaluation results are shown in Table 1.

As is clear from the results shown in Table 1, Example 1, which is a packaging bag having a spout according to the present invention, is Comparative Example 1 and Comparative Example in terms of the presence or absence of liquid spill, the remaining amount, and the refilling time. Compared to 2, the result is excellent.

In Example 1, the spout portion could be raised three-dimensionally immediately after opening, and the refilling work could be performed in the shortest time without taking time to move to the refilling work. In addition, the spout once formed did not close again during the work, and the result was that there was no spillage and the remaining amount was small.

In Comparative Example 2, after the opening, the spout was not formed three-dimensionally, and one person who tried to perform the refilling work in a close contact state came off when inserting it into the mouth of the container to be refilled. The result was a spill of the liquid in the contents. Also, during the refilling time, the spout was broken when it was squeezed, and the rib processing did not show the shape-retaining effect of the spout. In addition, the liquid content was accumulated on the filling port side, resulting in a large remaining amount.

In Comparative Example 3, since the liquid of the contents is attached to the base of the spout as in Comparative Example 2, the laminated bodies of the openings are in close contact with each other even when opened, and it is three-dimensional unless the openings are raised by hand. One person who tried to perform the refilling work while keeping the shape in close contact with the container came off when it was inserted into the mouth of the container to be refilled, resulting in spilling of the liquid content. In addition, the refilling time was the longest because the spout broke when squeezed.

As described above, according to the present invention, in the packaging bag (100) made of a laminate having a sealant layer as a base material of a plastic film, the packaging bag (100) is self-supporting when the contents are filled, and also in the pouring of the contents. It was possible to verify that the spout portion can maintain a stable shape and opening, and that it is possible to provide a packaging bag (100) having a spout.

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 ... Half cut line 16 ... Arrow 17 ・ ・ ・ Arrow 18 ・ ・ ・ Contents 19 ・ ・ ・ Bottom plate heat seal part 20 ・ ・ ・ Spout 21 ・ ・ ・ Flow path 22 ・ ・ ・ Folded line 23 ・ ・ ・ Spout heat seal 24 ・ ・ ・Spout side end heat seal 26 ... Rib processing line 100 ... Packaging bag A ... Branch height position B ... Half-cut line area D ... Center line

Claims (6)

A packaging bag made of a laminate having a sealant layer as a base material of a plastic film.
The packaging bag is composed of a body, a bottom, and a branch.
The torso is composed of an anterior torso and a back torso, and the side end and the upper end are heat-sealed.
At the bottom of the fuselage, a bottom plate is heat-sealed between the anterior fuselage and the rear fuselage to form an expandably sealed bottom.
The anterior torso is formed with a branch extending from the anterior torso with a tip.
In the branch, the root of the overhanging portion can be folded up and down as a folding line, 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 are overlapped on the side. The ends and tips are heat-sealed and become
The tip is provided removable from the branch so that the packaging bag can be opened to form a spout.
A half-cut line is provided on the outer surface of the packaging bag beyond the fold line toward the spout from below the front body , but does not reach the spout .
The half-cut line is characterized in that when the branch is folded downward by the folding line, the branch is provided only on the front body of the region covered by the branch and the surface of the continuous branch. , A packaging bag with a spout. The packaging bag having the spout according to claim 1, wherein the spout is formed by opening an easily openable planned opening line provided at the tip of the branch. The packaging bag having a spout according to claim 1 or 2, wherein the half-cut wire is provided with a plurality of wires. The packaging bag having a spout according to claim 3, wherein the half-cut line is provided at a position symmetrical with respect to the center line in the width direction of the front body portion. The packaging bag having a spout according to any one of claims 1 to 4, wherein the half-cut wire is provided as a continuous or discontinuous wire. The packaging bag having the spout according to any one of claims 1 to 5, wherein the half-cut wire has a width of 0.5 mm or less and a depth in the range of 5 μm to 50 μm. ..

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