JP2020109011A - Packing bag for refilling - Google Patents

Abstract

To provide a packaging bag for refilling which facilitates a refilling operation.SOLUTION: A refill packaging bag 10 comprises a spout 13 in which a flow path 13d is provided between films 11. The spout 13 includes a zipper tape 16 joined to the films 11 so as to cross the flow path 13d, and a sleeve part 17 provided on an upstream side of the spout 13 with respect to the zipper tape 16. On at least one widthwise side of the spout 13, a first step part 18 is provided on a widthwise outer side of the spout 13 with respect to the sleeve part 17. The first step part 18 has a shape in which an outer shape of the spout 13 is wider on the upstream side of the spout 13 than on a downstream side of the spout 13. The spout 13 is inserted into a mouth of a container to be refilled, the first step part 18 is brought into contact with a peripheral part of a mouth, and an outer periphery of the spout 13 is brought into contact with an inner surface of the mouth, so that the sleeve part 17 is kept open.SELECTED DRAWING: Figure 1

Description

The present invention relates to a refill packaging bag having a spout suitable for a refill operation.

A packaging bag provided with a spout is widely used, for example, in a packaging bag that stores refill contents, in order to facilitate the pouring of the contents.
Patent Document 1 includes a sealing portion provided on the container body side with respect to the cutout guiding portion, and a flow channel expanding portion provided on the container body side with respect to the sealing portion, and seals by pressing the flow channel expanding portion. A packaging container configured to open a part is described.
Patent Document 2 includes a belt-shaped engaging member joined to the inner surface of the bag body, and a sleeve portion provided closer to the storage space than the engaging member, and the engaging member and the sleeve portion have weakened portions. The bag body with the engaging member provided with is described.

Japanese Patent No. 4015592 JP, 2017-104485, A

The configurations described in the cited documents 1 and 2 include a mechanism for allowing the opening to be easily expanded. However, in the flow path expansion part described in the cited document 1, since the spout must be inserted inside the mouth of the container in advance, if the spout of the container is thin, it is necessary to make the spout even thinner. There is a problem that the flow path becomes narrow and it takes time to refill. The bag body described in the cited document 2 is supposed to store solids and articles such as foods and stationery, and does not consider refilling of liquids.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a refill packaging bag that facilitates the refill operation.

In order to solve the above problems, the present invention is a refill packaging bag having a spout provided with a flow path between films, the spout being joined to the film so as to traverse the flow path. Zipper tape, and a sleeve portion provided on the upstream side of the spout from the zipper tape, at least one in the width direction of the spout, the width direction of the spout than the sleeve portion. There is a first step portion on the outside, and the first step portion has a shape in which the outer width of the spout is wider on the upstream side of the spout than on the downstream side of the spout, and The sleeve portion is opened by inserting the spout into the mouth, bringing the first step portion into contact with the peripheral portion of the mouth, and bringing the outer periphery of the spout into contact with the inner surface of the mouth. (EN) Provided is a refill packaging bag which is characterized by maintaining a state.

At least one of the width direction of the pouring outlet has a second step portion on the downstream side of the pouring outlet from the sleeve portion, and the second step portion has a second step portion of the pouring outlet on the downstream side of the pouring outlet. The shape of the outer shape of the spout may be widened on the upstream side.
You may have the protrusion part which protruded so that the opening part of the container of a refill destination may be pinched|interposed into the width direction outer side of the said spout from the said 1st step part, and the said spout.
The sleeve portion joins a sheet-like member having a thin portion or a gap portion in the widthwise middle of the spout to the film, and bends in the width direction of the spout through the thin portion or the gap portion. It may be possible.

According to the present invention, before opening the zipper tape and the sleeve portion, the mouth of the container to be refilled is brought into contact with the first step portion, so that the posture of the spout is stable and the refilling operation becomes easy. Further, by inserting the spout into the mouth of the container to be refilled and bringing the first step portion into contact with the peripheral portion of the mouth, the state in which the sleeve portion is open on the inner surface of the mouth can be maintained. ..

It is a front view which shows the packaging bag for refilling of 1st Embodiment. It is sectional drawing along the flow path which shows an example of the internal structure of a spout. It is sectional drawing which crosses the flow path which shows an example of a sleeve part. It is sectional drawing which illustrates the use condition of the refill packaging bag of 1st Embodiment. It is sectional drawing which illustrates the use condition of the packaging bag for refilling of 2nd Embodiment. It is sectional drawing which illustrates the use condition of the refill packaging bag of 3rd Embodiment. It is sectional drawing which illustrates the use condition of the packaging bag for refilling of 4th Embodiment.

Hereinafter, the present invention will be described based on preferred embodiments with reference to the drawings.

FIG. 1 schematically shows the appearance of the refill packaging bag of the first embodiment. The refill packaging bag 10 of the present embodiment is composed of two body films 11 having substantially the same planar shape and a bottom film 12 folded in half with the folding line 12b as the center line. It is a pouch. The bottom film 12 is folded over so that the fold line 12 b faces inward, and is disposed between the lower portions of the body film 11. Side edge seal portions 11a and 11b are formed on both side edge portions of the refill packaging bag 10, respectively. A bottom seal portion 12a is formed in the lower portion of the refill packaging bag 10 so that the body films 11 and 11 and the bottom film 12 are joined to each other.

At the upper corner of the refill packaging bag 10, a spout 13 having a flow path 13d directed obliquely upward is provided. The flow path 13d is provided between the two body films 11. Specifically, both sides of the flow path 13d are partitioned by a pair of flow path forming seal portions 13a and 13b formed by joining two body films 11 together. The downstream side of the spout 13 is closed by a flow path closing seal portion 13c. In the case of the present embodiment, the inclined seal portion 13e is continuously provided on the upper portion of the side edge seal portion 11a, and the spout 13 is formed so as to protrude from the inclined seal portion 13e. The flow passage forming seal portions 13a and 13b and the flow passage closing seal portion 13c provided around the spout 13 can also be formed continuously with the side edge seal portion 11a and the inclined seal portion 13e. Before the refill packaging bag 10 is filled with the contents, a filling port 14 may be opened between the flow path forming seal portion 13b and the side edge seal portion 11b. After filling the contents from the filling port 14, the filling port 14 can be closed by joining the upper ends of the body film 11 to form the upper end seal portion 14a.

The spout 13 is opened by removing the tip of the spout 13 along the flow path closing seal portion 13c. Therefore, the spout 13 may have a cutoff line 15. The cut line 15 may be cut using a blade such as scissors, or may be torn along an unsealing assisting line formed of a half cut groove or the like. In the half-cut groove, a break portion of the film 11 along the cut line 15 may reach the surface of the film 11, or the break portion may fit inside the film 11. An opening start portion such as a notch may be provided on at least one end of the cut line 15.

The spout 13 has a zipper tape 16 joined to the film 11 so as to traverse the flow path 13d, and a sleeve portion 17 which holds the expanded state of the flow path 13d after opening. The sleeve portion 17 is provided on the upstream side of the spout 13 with respect to the zipper tape 16. When the cutout line 15 is provided in the spout 13, the zipper tape 16 is arranged on the upstream side of the spout 13 with respect to the cutout line 15. When the cutout line 15 is not provided in the spout 13, the tip of the spout 13 is removed between the flow path closing seal portion 13c and the zipper tape 16 when opening.

FIG. 2 shows an example of the internal structure of the spout after the tip of the flow path 13d is removed. The upper end of FIG. 2 is an opening 15a formed by removing the tip of the spout 13 (cutting the cut line 15 or the like). The zipper tape 16 before being opened is closed by fitting the convex male portion 16a and the concave female portion 16b. The sleeve portion 17 of the present embodiment is configured such that the sheet members 17a and 17b are joined to the inner surface of the film 11 to reinforce the periphery of the flow path 13d. It should be noted that it is possible to join the sheet members 17a and 17b to the outer surface of the film 11 to form the sleeve portion 17.

The cross-sectional shapes of the male part 16a and the female part 16b may be substantially symmetrical on the upstream side and the downstream side of the spout 13. The shape on the upstream side and the shape on the downstream side may be asymmetrically different. By making the cross-sectional shape of the male portion 16a or the female portion 16b asymmetric with respect to the flow direction, the unsealing strength required for releasing the fitting between the male portion 16a and the female portion 16b is asymmetric with respect to the flow direction. be able to. That is, the unsealing strength when the distance of the film 11 is widened from the upstream side of the zipper tape 16 and the unsealing strength when the distance of the film 11 is widened from the downstream side of the zipper tape 16 can be made different.

By making the unsealing strength from the upstream side larger than the unsealing strength from the downstream side, even if the pressure of the contents acts on the zipper tape 16 when the spout 13 is directed downward, the unintentional opening of the zipper tape 16 can be prevented. Can be suppressed. When the opening strength from the upstream side is made smaller than the opening strength from the downstream side so that the pressure of the contents acts on the zipper tape 16 when the flow path of the sleeve portion 17 is expanded with the spout 13 facing downward. In addition, the opening of the zipper tape 16 can be promoted, and the opening from the tip end side of the spout 13 can be suppressed.

FIG. 3 shows an example of the structure of the sleeve portion 17 in the direction crossing the flow path 13d. A bent portion 17c having a thin portion or a gap portion is provided in the middle of the flow path 13d in the width direction. In the example shown in FIG. 3, the sheet members 17a and 17b are continuously integrated on both sides of the bent portion 17c composed of the thin portion via the thin portion. When the bent portion is formed by the gap portion, the sheet members 17a and 17b on both sides may be separated via the bent portion 17c, and both may be indirectly connected via the film 11 in the gap portion. The sheet members 17a and 17b are configured to be less likely to bend than the bending portion 17c and the film 11.

When both ends of the flow path 13d in the width direction, for example, the flow path forming seal portions 13a and 13b are pressed inward in the width direction, the sleeve portion 17 bends outward in the thickness direction at the bending portion 17c, The extended state of 13d can be maintained. In addition, in FIG. 3, the inward direction in the width direction is a direction in which the flow path forming seal portion 13a moves to the right side or the flow path forming seal portion 13b moves to the left side. Further, in FIG. 3, the outward direction in the thickness direction is a direction in which the sheet members 17a and 17b above the flow passage 13d move upward and the sheet members 17a and 17b below the flow passage 13d move downward. .. When the sleeve portion 17 is opened, the width of the spout 13 is narrower than when the sleeve portion 17 is closed, so that the sleeve 13 can be easily inserted into the refill destination container. In the example shown in FIG. 3, the bent portion 17c is provided at one location in the width direction of the flow path 13d, but the bent portion 17c can be provided at two or more locations in the width direction of the flow path 13d.
Although not shown in particular, the zipper tape 16 can also be provided with a bent portion by a thin portion or a gap. From the viewpoint of the sealing property of the zipper tape 16, it is preferable to narrow the width of the space generated by the bent portion. The bent portion may be provided only on one of the male portion 16a and the female portion 16b, and the positions of the bent portion provided on the male portion 16a and the bent portion provided on the female portion 16b may be shifted.

FIG. 4 shows the usage state of the refill packaging bag 10 in which the spout 13 after opening has been inserted into the mouth 22 of the container 20 to be refilled. In FIG. 4, the dotted meshes on the side edge seal portion 11a, the flow path forming seal portions 13a and 13b, and the upper end seal portion 14a represent a typical seal width range. The container 20 shown in FIG. 4 has a mouth portion 22 above the body portion 21.
At the time of refilling, it is desirable to invert the refill packaging bag 10 so that the spout 13 faces downward. However, the balance of the refill packaging bag 10 is unbalanced while the content of the refill packaging bag 10 is heavy, so that conventionally, when the refill packaging bag 10 is unintentionally tilted, the spout 13 May come off the mouth portion 22 and spill the contents. Further, when the flow path forming seal portions 13a and 13b come into contact with the inner surface of the mouth portion 22 and, for example, the outer side of the bent portion 17c is pressed, the sleeve portion 17 is deformed in the closing direction and the refilling work may be time-consuming. is there. Further, when the remaining amount of the contents is low, there is a demand to apply external force to the refill packaging bag 10 to squeeze out the contents. However, conventionally, even when squeezing out, the spout 13 may come off the mouth portion 22 and the contents may be spilled.

The refill packaging bag 10 of the present embodiment has the first step portion 18 on the outer side in the width direction of the flow passage 13d with respect to the sleeve portion 17 in at least one of the flow passage forming seal portions 13a and 13b. The first step portion 18 has a shape such that the outer shape of the spout 13 is wider on the upstream side of the spout 13 than on the downstream side of the spout 13. It is possible to bring the first step portion 18 into contact with the peripheral edge portion 23 of the mouth portion 22 in a state where the spout 13 after opening has been inserted into the mouth portion 22 of the container 20. Therefore, the posture of the refill packaging bag 10 is stable. Further, when the first step portion 18 is brought into contact with the peripheral portion 23 of the mouth portion 22, the outer periphery of the spout 13 comes into contact with the inner surface of the mouth portion 22, so that the sleeve portion 17 may be opened during refilling. It can be easily maintained. The refill packaging bag 10 of the present embodiment constitutes a mechanism for maintaining the open state of the sleeve portion 17 by combining these means. Further, even when the weight of the contents is large and the refill packaging bag 10 is out of balance, or when the contents are squeezed out, the spout 13 is less likely to come off the mouth 22, and the spillage of the contents is suppressed. You can

When the diameter of the spout 22 is small, it is preferable to open the zipper tape 16 before inserting the spout 13 into the spout 22, because the spout 13 can be easily inserted. In this case, if the mouth 22 and the spout 13 are diagonally opposed to each other, the contents will not easily spill. When the diameter of the spout 22 is large, it is preferable to insert the spout 13 into the spout 22 while the zipper tape 16 is closed because the contents are unlikely to spill out of the spout 13 even when the spout 22 remains upward.

In order to bring the inner surface of the mouth 22 into contact with the outer periphery of the sleeve 17 with the first step portion 18 in contact with the peripheral portion 23 of the mouth 22, the first step in the flow direction of the spout 13 is required. The position of the step portion 18 may be within the range in which the sleeve portion 17 is provided at the spout 13, or may be arranged on the downstream side of the spout 13 with respect to the sleeve portion 17. In order to insert the sleeve portion 17 into the mouth portion 22, the inner diameter of the mouth portion 22 is preferably larger than the width of the spout 13 when the sleeve portion 17 is open. When the sleeve portion 17 is inserted into the mouth portion 22, in order to maintain the open state of the sleeve portion 17 due to contact with the inner surface of the mouth portion 22, the inner diameter of the mouth portion 22 is set when the sleeve portion 17 is closed. It is preferable that the width is smaller than the width of the spout 13.

When the position of the first step portion 18 in the flow direction of the spout 13 is within the range where the sleeve portion 17 is provided in the spout 13, for example, the spout 22 is directed upward and the spout 13 is directed laterally or obliquely downward. However, when the spout 13 is inserted into the mouth portion 22, at least one first step portion 18 is brought into contact with the peripheral edge portion 23 of the mouth portion 22, so that the sleeve portion 17 is opened between the peripheral portion 23 and the peripheral portion 23. External force can be obtained.

FIG. 5 shows a state in which the spout 13 is inserted into the mouth 22 of the refill destination container 20 as the use state of the refill packaging bag of the second embodiment. In the second embodiment, the spout 13 has a second step portion 19 on the downstream side of the spout 13 with respect to at least one of the flow path forming seal portions 13a and 13b, relative to the sleeve portion 17. The second step portion 19 has a shape in which the outer shape of the spout 13 is wider on the upstream side of the spout 13 than on the downstream side of the spout 13. The width of the spout 13 at the position of the second step portion 19 is preferably narrower than the width of the spout 13 in the sleeve portion 17 in the closed state. Thereby, the portion on the downstream side of the second step portion 19 can be easily inserted into the mouth portion 22.

When the spout 13 is inserted into the mouth 22 of the container 20, the second step portion 19 is brought into contact with the peripheral portion 23 of the mouth 22 so that the spout 13 can be refilled while the spout 13 is being inserted into the mouth 22. The posture of the packaging bag 10 can be stabilized. Further, when the sleeve portion 17 is outside the mouth portion 22, the second step portion 19 can be brought into contact with the mouth portion 22. Therefore, for example, the refill packaging bag is inverted with the zipper tape 16 and the sleeve portion 17 closed, the second step portion 19 is brought into contact with the mouth portion 22 and then the sleeve portion 17 is pressed from the outside, and the flow path 13d And the zipper tape 16 can be opened by the pressure of the contents. Therefore, spilling of the contents can be further suppressed as compared with the case where the spout 13 is inserted into the mouth 22 after the zipper tape 16 is opened.

FIG. 6 shows a state in which the spout 13 after opening is inserted into the mouth portion 22 of the container 20 as a usage state of the refill packaging bag of the third embodiment. The attachment part 24 may protrude from the mouth part 22 for the purpose of guiding the content when pouring out the content from the container 20. In this case, the positions of the first step portions 18 and 18A along the flow direction of the spout 13 may be different. In the example shown in FIG. 6, the first step portion 18 that can come into contact with the peripheral edge portion 23 of the mouth portion 22 is arranged within the range in which the sleeve portion 17 is provided at the spout 13 as in the first embodiment. There is. Further, the first step portion 18A that can come into contact with the tip of the attachment portion 24 is arranged on the downstream side of the spout 13 with respect to the sleeve portion 17. This further stabilizes the posture when the spout 13 is inserted into the mouth portion 22 from which the attachment portion 24 projects.

FIG. 7 shows the usage state of the refill packaging bag of the fourth embodiment, in which the spout 13 after opening is inserted into the mouth 22 of the container 20. In the case of the first to third embodiments, the first step portions 18 and 18A are provided on the side edge seal portion 11a or the inclined seal portion 13e continuous with the side edge seal portion 11a. In the case of the fourth embodiment, the first step portion 18B is provided in the middle of the flow path forming seal portions 13a and 13b. In this case, the widths of the flow path forming seal portions 13a and 13b may be changed before and after the first step portion 18B along the flow direction of the spout 13. In the example shown in FIG. 7, the widths of the flow path forming seal portions 13a and 13b are wider on the upstream side of the spout 13 than on the downstream side of the spout 13. The width of the flow passage 13d inside the flow passage forming seal portions 13a and 13b may be substantially constant or may be changed in the middle of the flow direction.

You may have the protrusion part 18C which protruded so that the opening part 22 of the container 20 may be pinched|interposed in the width direction outer side of the spout 13 rather than the 1st step part 18B. Thereby, the posture of the refill packaging bag 10 can be made more stable with the first step portion 18 in contact with the peripheral portion 23 of the mouth portion 22. When the protrusion 18C is provided at the spout 13 of the first to third embodiments, a portion where the width of the inclined seal portion 13e is wide may be provided near the flow path forming seal portions 13a and 13b. The protrusion 18C can be provided on at least one of the spouts 13 in the width direction. The protrusions 18C may be provided on both sides of the spout 13 in the width direction.

Although the present invention has been described above based on the preferred embodiments, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention. Modifications include addition, replacement, omission, and other changes of the constituent elements in each embodiment. It is also possible to appropriately combine the constituent elements used in the two or more embodiments.

The refill packaging bag of the above-described embodiment can be suitably used as a packaging bag filled with a fluid content such as a liquid substance, a powder, a granule, or a mixture thereof.
Although the size of the refill packaging bag is not particularly limited, for example, the height of the refill packaging bag is about 100 to 500 mm, and the width of the refill packaging bag (maximum width between both side edges) is 70 to 300 mm. The filling amount of the contents is about 100 to 5000 cm ³ .

As the film used for forming the packaging bag such as the body film and the bottom film, those conventionally used can be used without particular limitation. For example, a film made of biaxially oriented polypropylene, biaxially oriented polyamide, biaxially oriented polyester or the like is used as a base film, and low density polyethylene, linear low density polyethylene, high density polyethylene, ethylene-acetic acid is added to these base films. A laminate in which polyolefin resins such as vinyl copolymers, polypropylene, cyclic olefin polymers or copolymers are laminated as a sealant layer is used.
Examples of the method for producing a laminated film include a dry laminating method, an extrusion laminating method, and a coextrusion method. An adhesive agent, an anchor agent, or the like can be provided between the base film layer and the sealant layer in order to improve the adhesive strength. In this case, a plurality of base material films may be laminated to increase the strength of the packaging bag. Alternatively, a metal foil such as an aluminum foil, a metal vapor deposition layer, an inorganic vapor deposition layer such as ceramics, an ethylene-vinyl alcohol copolymer film, or the like may be laminated in order to enhance the barrier property against gas or ultraviolet rays.

The zipper tape and the sleeve portion are preferably made of a resin that can be joined to the sealant layer by heat welding. Examples of the resin that can be bonded to the sealant layer include various polyolefin resins exemplified as the material of the sealant layer. The resin forming the sealant layer, the resin forming the zipper tape, and the resin forming the sleeve portion may be the same or different from each other. For example, in the case of polyethylene resin, the sealant layer may be made of low density polyethylene or linear low density polyethylene, and the zipper tape or the sleeve portion may be made of high density polyethylene. An inorganic filler may be added to improve the shape retention of the zipper tape or the sleeve portion.

The bottom film is not essential, and the present invention is also applicable to a packaging bag composed of a flat bag such as a three-sided sealed bag or a four-sided sealed bag.
The shape of the spout and the direction of the flow path can be appropriately designed depending on the ease of pouring and manufacturing, and are not particularly limited. For example, the spout may be provided at the side edge seal portion or the upper end seal portion of the packaging bag.

10... Refill packaging bag, 11... Body film (film that constitutes the spout), 11a, 11b... Side edge seal part, 12... Bottom film, 12a... Bottom seal part, 12b... Fold line, 13... Spout , 13a, 13b... Flow path forming seal part, 13c... Flow path closing seal part, 13d... Flow path, 13e... Inclined seal part, 14... Filling port, 14a... Top end seal part, 15... Cut line, 15a... Opening part , 16... Zipper tape, 16a... Male part, 16b... Female part, 17... Sleeve part, 17a, 17b... Sheet member, 17c... Bent part, 18, 18A, 18B... First step part, 18C... Projection part, 19 ...Second step, 20...refill destination container, 21...body, 22...mouth, 23...periphery of mouth, 24...attachment.

Claims (5)

A refill packaging bag having a spout provided with a flow path between films,
The spout comprises a zipper tape joined to the film so as to traverse the flow path, and a sleeve portion provided on the upstream side of the spout than the zipper tape,
At least one of the spouts in the width direction has a first step portion on the outer side in the width direction of the spout than the sleeve portion, and the first step portion is the spout from the downstream side of the spout. Is a shape in which the width of the outer shape of the spout increases on the upstream side of
By inserting the spout into the mouth of the container to be refilled, contact the first step portion to the peripheral edge of the mouth, and contact the outer periphery of the spout to the inner surface of the mouth, A packaging bag for refilling characterized in that the sleeve portion is kept open. The refill packaging bag according to claim 1, wherein the position of the first step portion in the flow direction of the spout is within a range in which the sleeve portion is provided. At least one of the width direction of the pouring outlet has a second step portion on the downstream side of the pouring outlet from the sleeve portion, and the second step portion has a second step portion of the pouring outlet on the downstream side of the pouring outlet. The refill packaging bag according to claim 1 or 2, wherein the outer shape of the spout is wide on the upstream side. 4. A projecting part projecting so as to sandwich the mouth part of the container to be refilled between the spout and the spout outside of the first step part in the width direction of the spout. The packaging bag for refilling according to any one of 1. The sleeve portion is formed by joining a sheet-like member having a thin portion or a gap portion in the widthwise middle of the flow path to the film, and bending in the width direction of the spout through the thin portion or the gap portion. The packaging bag for refilling according to any one of claims 1 to 4, which is possible.

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