Pouch Container

Abstract

To provide a pouch container from which a content can be smoothly and easily poured out.SOLUTION: A pouch container 101 includes: a bag body 1 in which a heat seal part 15 is continuously provided along a first side 41, a second side 42 and a third side 43 surrounding a storage space for a content 10; and a zipper 2 that is linearly arranged across the bag body 1 by connecting the first side 41 and the third side 43, and welded to the bag body 1. The heat seal part 15 is separated from the zipper 2 in a first section 51 that occupies 30% or more and 70% or less of the second side 42, and the zipper 2 can be opened and closed in this part. In the part of the second side 42 other than the first section 51, the zipper 2 overlaps with the heat seal part 15 and is welded so that it cannot be opened and closed. At the corner part where the second side 42 and the third side 43 are in contact, one or more finger holes 16 are provided in the heat seal part 15 .SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a pouch container. [Background technology]

[0002] What is called an article storage bag is described in JP 2010-23921 A (Patent Document 1). What is called a fluid package is described in JP 7-41014 A (Patent Document 2). These bag containers can be filled with fluids and used for storage and transportation. When the stored fluid needs to be used, the bag container is opened and the fluid as the contents can be taken out through the open zipper part. After using an appropriate amount, the remaining contents can be stored by closing the zipper part.

[0003] An example of a shape-retaining tape that can be used for a zipper portion is described in Japanese Patent No. 6203636 (Patent Document 3). In addition to the shape-retaining tape, Patent Document 3 also describes a packaging bag equipped with a zipper tape. The packaging bag equipped with a zipper tape is a packaging bag having an opening through which the contents can be removed, and the zipper tape is thermally bonded to the inner peripheral surface of the opening. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2010-23921 A [Patent Document 2] Japanese Patent Application Publication No. 7-41014 [Patent Document 3] Patent No. 6203636 Summary of the Invention [Problem to be solved by the invention]

[0005] In recent years, there has been a demand to reduce the use of rigid resin molded containers in order to reduce waste and the use of non-renewable resources such as petroleum. Instead of such resin molded containers, flexible pouch containers are increasingly being used as distribution containers for refilling and transferring. As a result, pouch containers have come to be used for a variety of fluid products.

[0006] In the pouch container based on the conventional technology, when a fluid material is transferred to a molding container, a device to be used, etc., the pouch container is tilted and poured out through the open zipper part. In this case, the pouch container is often tilted while holding the side opposite to the open part. In this case, since the pouch container is soft, the shape of the open part is not stable. In addition, since the zipper part tries to return from the open state to the closed state, the pouring operation is difficult. In particular, when the content is a powder or fine granular material, it does not flow out smoothly compared to a liquid, so it is necessary to shake the pouch container or squeeze the pouch container with another hand to push out the content, which makes the operation complicated.

[0007] In order to smoothly pour out the contents, one might consider holding the bottle at a location on the side opposite the opening, but this location is also soft, making the bottle unstable.

[0008] SUMMARY OF THE PRESENT EMBODIMENTS Accordingly, an object of the present invention is to provide a pouch container from which the contents can be poured out smoothly and easily. [Means for solving the problem]

[0009] In order to achieve the above object, the pouch container according to the present invention comprises a bag body having a first side, a second side, and a third side that are connected in this order and surround a storage space for contents from the front, top, and back, the bag body being formed from a synthetic resin sheet, and a heat-sealed portion provided continuously along the first side, the second side, and the third side, and a zip part that is arranged linearly across the bag body connecting the first side and the third side at a position spaced from the second side toward the inside of the storage space, and is welded to the bag body. The heat-sealed portion is spaced outward from the zip part in a first section that occupies 30% to 70% of the second side. In the portion of the second side other than the first section, the zip part overlaps the heat-sealed portion. The zip part is welded so that it can be opened and closed in a portion that does not overlap the heat-sealed portion, and cannot be opened and closed in a portion that overlaps the heat-sealed portion. At a corner where the second side and the third side meet, one or more finger holes are provided in the heat-sealed portion. Effect of the Invention

[0010] According to the present invention, the contents can be poured out smoothly and easily. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a plan view of a pouch container in a first embodiment according to the present invention in which contents are contained and the pouch container is laid down in an unopened state. [Diagram 2] 1 is a front view of a pouch container in accordance with a first embodiment of the present invention in an upright state with contents accommodated in the pouch container in an unopened state. [Diagram 3] FIG. 1 is a plan view of a pouch container in a first embodiment according to the present invention in a state before contents are placed inside the pouch container. [Figure 4] FIG. 2 is an explanatory diagram showing the positional relationship of finger holes of a pouch container in the first embodiment according to the present invention. [Diagram 5] FIG. 2 is an explanatory diagram of a state in which the pouch container in the first embodiment according to the present invention is opened. [Figure 6] FIG. 2 is an explanatory diagram showing a state in which the pouch container in the first embodiment according to the present invention has been resealed after being opened. [Figure 7] FIG. 1 is an explanatory diagram of a pouch container in an open state in a first embodiment according to the present invention. [Figure 8] FIG. 2 is an explanatory diagram of the structure of a zipper part of a pouch container in the first embodiment according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] The dimensional ratios shown in the drawings do not necessarily represent the actual ratios, and may be exaggerated for the convenience of explanation. In the following description, when the concept of up or down is mentioned, it does not necessarily mean absolute up or down, but may mean relative up or down in the illustrated position.

[0013] (Embodiment 1) (composition) A pouch container in a first embodiment according to the present invention will be described with reference to Fig. 1 to Fig. 3. Fig. 1 shows pouch container 101 in an unopened state with contents 10 contained therein, as viewed from above when laid flat. Fig. 2 shows pouch container 101 in this state, as viewed from the side when erected.

[0014] The pouch container 101 includes a bag body 1 and a zipper part 2. The bag body 1 has a first side 41, a second side 42, and a third side 43 that are connected in this order and surround the storage space for the contents 10 from the front, top, and back. In Fig. 1 and Fig. 2, the right side is the front, the left side is the back, and the top side is the top. In Fig. 2, the contents 10 are biased downward in the storage space due to gravity. The bag body 1 is formed of a synthetic resin sheet. The "synthetic resin sheet" here includes a base material and a sealant layer with heat sealability (thermal welding). As the base material, a biaxially stretched film with a thickness of 9 μm to 30 μm is preferable because it has excellent rigidity, surface heat resistance during heat sealing, and tearability when opened. As the "biaxially stretched film" here, for example, a biaxially stretched polyester (PET) film, a biaxially stretched polyamide (ONY) film, a biaxially stretched polypropylene (OPP) film, etc. can be used. The "sealant layer" may be a film having a thickness of 40 μm to 150 μm made of ethylene-based resin, polypropylene-based resin (CPP, etc.), etc. Examples of the "ethylene-based resin" that can be used here include low-density polyethylene (LDPE), high-density polyethylene (HDPE), linear low-density polyethylene (LLDPE), and ethylene-vinyl acetate copolymer (EVA).

[0015] The substrate may be printed. Any of a deposition film, a barrier film, a reinforcing layer, etc. may be disposed between the substrate and the sealant layer. Each layer may be laminated by a method such as dry lamination or extrusion lamination.

[0016] In the bag body 1, a heat seal portion 15 is provided continuously along a first side 41, a second side 42, and a third side 43. The zipper portion 2 is arranged linearly across the bag body 1, connecting the first side 41 and the third side 43, at a position spaced from the second side 42 toward the inside of the storage space. The zipper portion 2 is welded to the bag body 1.

[0017] FIG. 3 shows the state before contents 10 are contained in pouch container 101. In this state, the side opposite second side 42 forms opening 13. Contents 10 can be placed through opening 13 into the storage space provided inside bag body 1. After contents 10 are placed inside the storage space through opening 13, opening 13 is welded to form heat-sealed portion 14 shown in FIG. 1. Contents 10 can thus be enclosed in the storage space of bag body 1.

[0018] As shown in FIG. 3, the pouch container 101 has a first section 51 and a second section 52. The heat-sealed section 15 is spaced outward from the chuck section 2 in the first section 51, which occupies 30% to 70% of the second side 42. In the portion of the second side 42 other than the first section 51, the chuck section 2 overlaps with the heat-sealed section 15. The heat-sealed section 15 is the area shown by hatching in FIG. 4. The chuck section 2 can be opened and closed in the portion not overlapping the heat-sealed section 15. The chuck section 2 is welded so that it cannot be opened and closed in the portion overlapping the heat-sealed section 15. As the chuck section 2, a zipper tape integrally formed with a shape-retaining tape described in Patent Document 3 may be used.

[0019] At the corner where the second side 42 and the third side 43 meet, one or more finger holes 16 are provided in the heat sealed portion 15. The number of finger holes 16 may be one, but in the example shown here, two finger holes 16 are provided in the heat sealed portion 15. The number of finger holes 16 may be three or more.

[0020] (Action and effect) In this embodiment, the pouch container 101 has the zipper portion 2, so that it can be resealed by the zipper portion 2 even after it has been opened. In this embodiment, the zipper portion 2 is disposed so as to connect the first side 41 and the third side 43 and cross the bag body 1, so that when the bag body 1 is opened above the zipper portion 2, the storage space is protected by the zipper portion 2. In other words, it is possible to prevent a situation in which the tear accidentally reaches the storage space or the finger hole 16 when the bag body 1 is torn horizontally to open it.

[0021] In this embodiment, the first section 51, which occupies 30% to 70% of the second side 42, is separated outward from the chuck part 2 and can be opened and closed at this section, so that the contents can be poured out smoothly and easily. Even if the contents 10 are powder or fine granular material, the first section 51, which corresponds to the openable and closable part of the chuck part 2, is sufficiently large so that the contents 10 can be poured out smoothly.

[0022] As shown in this embodiment, the one or more finger holes 16 preferably include two holes, and as shown in FIG. 4, the two holes are preferably arranged side by side in the diagonal direction 90 connecting the second side 42 and the third side 43. By adopting this configuration, it becomes easy to stably support the pouch container 101 using the finger holes 16 when pouring out the contents. By providing two finger holes 16, the pouch container 101 can be stably held while preventing the pouch container 101 from rotating around the finger holes 16 while being held. The diagonal direction 90 may be indicated by a straight line that forms an angle of 45° with respect to the horizontal line. The straight line indicating the diagonal direction 90 is preferably a direction that forms an angle of 30° to 60° with respect to the horizontal line. The hole for holding may be one oval hole, but it is preferable to use a combination of multiple finger holes 16. This is because there is a risk that a single oval hole will widen and deform, resulting in instability.

[0023] The hole as the finger hole 16 is substantially circular as shown in FIG. 3, and is formed by cutting with a part of the periphery remaining. The part of the connected piece is pushed out and a finger is passed through the hole, so that the part of the connected piece can be folded. Both ends of the cutting line are slightly curved inward or outward to prevent tearing from the end of the cutting line as much as possible. In FIG. 3 and the like, this small curved part is not shown. In addition, by arranging the connected part of the piece so that it is in a direction between the direction parallel to the above-mentioned diagonal direction 90 and the direction parallel to the zipper part 2 on the upper side of the hole, it is preferable because it is easy to hold when lifting the pouch container and tilting it diagonally. In this way, it is possible to prevent the finger from getting hurt as much as possible. The hole as the finger hole 16 may be a simple through hole instead of being cut with a part of the periphery remaining.

[0024] In order to easily open an opening through which the contents 10 can enter and exit by cutting between the second side 42 and the zipper part 2, at least one starting point for tearing is provided at a position closer to the second side 42 than the zipper part 2 on at least one of the first side 41 and the third side 43, and the starting point is preferably at least one of a notch or a cut. In the example shown here, the starting point is a cut 17. By adopting this configuration, the bag body 1 can be easily torn with bare hands starting from the cut 17, which is preferable because it is possible to easily perform the opening operation without tools. For example, in FIG. 5, the bag body 1 can be easily torn and opened by pinching the upper part of the bag body 1 and pulling it in the direction shown by the arrow 91.

[0025] In particular, if the substrate is a laminate of a biaxially oriented film, the tear is unlikely to be interrupted and the film can be torn smoothly. In this case, the tearing proceeds smoothly, so that the chuck portion 2 can prevent the tearing from proceeding downward as much as possible.

[0026] In the example shown in FIG. 5, the tearing starts from the notch 17 on the front side, i.e., the right side in the figure, but the tearing may start from the notch 17 on the rear side, i.e., the left side in the figure. FIG. 6 shows the resealed state after the opening operation is completed. After opening, the pouch container 101 can be repeatedly opened and closed by the zipper part 2. FIG. 7 shows the state in which the mouth is opened to take out the contents 10. When the zipper part 2 is configured to have a shape-retaining part using a shape-retaining tape as described in Patent Document 3, the shape can be maintained with the mouth 4 open as shown in FIG. 7, making it easy to put in and take out the contents 10.

[0027] The notch 17 may be a V-shaped notch. The starting point may be some kind of cut instead of the notch 17. The cut may be an I-shaped cut. The starting point may be a combination of a notch and a cut.

[0028] An example of the chuck portion 2 is shown in FIG. 8. The chuck portion 2 preferably includes a structure in which a first layer 61 containing high-density polyethylene and an inorganic filler and a second layer 62 containing a heat-sealable resin are laminated. The first layer 61 contains high-density polyethylene and an inorganic filler, and thus the shape-retaining performance of the chuck portion 2 can be improved. Therefore, it becomes easy to maintain the mouth 4 open. Since the shape of the mouth 4 can be maintained, the size and shape of the opening can also be adjusted. Therefore, it becomes easy to adjust the pouring amount when tilting the pouch container and transferring the contents from the mouth to another container, especially when the contents are powder or granules.

[0029] The heat-sealable resin of the second layer 62 is preferably a resin having heat-sealing properties (thermal adhesion) to the sealant layer of the synthetic resin sheet. In particular, if the sealant layer is formed of low-density polyethylene (LDPE) or linear low-density polyethylene (LLDPE) and the heat-sealable resin forming the second layer 62 is also LDPE or LLDPE, the heat-sealing at the heat-sealed portion 15 is strong, which is preferable.

[0030] Even when holding pouch container 101 by inserting a finger through finger hole 16, if zipper portion 2 has high rigidity, the shape of pouch container 101 is stabilized by the rigidity of zipper portion 2, so that pouch container 101 can be held stably. In particular, zipper portion 2 includes first layer 61 containing high-density polyethylene and inorganic filler, and thus stability can be increased by the shape retention effect.

[0031] In addition, the pouch container 101 in the present embodiment has been described as having no gusset at the bottom, but this is merely an example. The pouch container may have a gusset at the bottom, that is, a so-called standing pouch.

[0032] In the present embodiment, as shown in FIG. 1, the pouch container 101 having the substantially rectangular bag body 1 has been described as an example, but this is merely an example shown for the purpose of explanation, and the bag body 1 is not necessarily substantially rectangular. The bag body 1 has been described as having the first side 41, the second side 42, and the third side 43, but each of the first side 41, the second side 42, and the third side 43 is not necessarily straight. For example, they may be curved. Each side may be entirely curved, or may be a combination of curved and straight portions. The bag body 1 may have a shape in which the center of the first side 41 and the center of the third side 43 are curved inward. Alternatively, the bag body 1 may have a shape in which the upper part of the third side 43 is inclined inward.

[0033] The joints, i.e., corners, of the first side 41, the second side 42, and the third side 43 of the bag body 1 may be right angles as shown in Fig. 1, but this is merely an example and is not limited to right angles. Other angles are also possible. Furthermore, the corners may be chamfered or may be rounded.

[0034] In this embodiment, as shown in Fig. 3, the state before the contents 10 are contained is shown, in which the bottom is not sealed and has an opening 13, and the contents 10 are filled into the containing space from the opening 13 at the bottom, and the bottom is sealed. However, this is merely an example, and the method is not limited to this. For example, the pouch container may be supplied in a state where the bottom is sealed and the second side above the upper zipper part is not sealed and has an opening. In this case, the contents may be filled into the containing space from the upper opening, and the second side may be sealed.

[0035] In addition, two or more of the above-described embodiments may be appropriately combined and adopted.

[0036] The above-described embodiments disclosed herein are illustrative and not restrictive in all respects. The scope of the present invention is defined by the claims, and includes all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0037] 1 bag body, 2 zipper portion, 4 mouth, 10 contents, 13 opening, 14 (bottom) heat-sealed portion, 15 heat-sealed portion, 16 finger hole, 17 notch, 41 first side, 42 second side, 43 third side, 51 first section, 52 second section, 61 first layer, 62 second layer, 90 diagonal direction, 91 arrow, 101 pouch container.

Claims

1. a bag body having a first side, a second side and a third side that are connected in this order and surround a storage space for contents from the front, top and back, the bag body being made of a synthetic resin sheet, and having heat-sealed portions provided continuously along the first side, the second side and the third side; a zipper portion that is arranged linearly across the bag body at a position spaced from the second side toward the inside of the storage space, connecting the first side and the third side, and is welded to the bag body; the heat seal portion is spaced outwardly from the zipper portion in a first section that occupies 30% to 70% of the second side, In a portion of the second side other than the first section, the zipper portion overlaps with the heat seal portion, The zipper portion is welded so that it can be opened and closed at a portion not overlapping the heat-sealed portion, and cannot be opened and closed at a portion overlapping the heat-sealed portion, At a corner where the second side and the third side meet, one or more finger holes are provided in the heat-sealed portion, The one or more finger holes include two holes, and the two holes are arranged side by side in an oblique direction connecting the second side and the third side, A pouch container, wherein each of the two holes is cut into an arc shape while leaving a portion of the upper side of the periphery, and the direction of a straight line connecting both ends of the arc shape is between the direction in which the two holes are aligned and the direction parallel to the zipper portion.

2. 2. The pouch container according to claim 1, wherein at least one starting point for tearing is provided on at least one of the first side and the third side at a position closer to the second side than the zipper portion so as to make it easy to tear between the second side and the zipper portion to open an opening through which the contents can enter and exit, and the starting point is at least one of a notch or a cut.

3. 3. The pouch container according to claim 1, wherein the zipper portion includes a structure in which a first layer containing high density polyethylene and an inorganic filler and a second layer containing a heat-sealable resin are laminated together.

Images