Pouch

Abstract

To provide a pouch having a spout, the pouch having a structure that enables easy cutting off of a film at a portion sealing the spout.SOLUTION: In a pouch 1, a first opening line L21 is provided along an intermediate seal portion 118 and an inclined seal portion 116 in the area adjacent to the intermediate seal portion 118 and the inclined seal portion 116 on the front sheet 101 and the back sheet 102 of the sealed space 210, and a second opening line L22 is provided on the intermediate seal portion 118 in a convex shape facing in the opposite direction to the sealed space 210.SELECTED DRAWING: Figure 3

Description

[Technical field]

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

[0002] Conventionally, a pouch is known in which a spout is disposed between two side films constituting a main packaging bag, and the spout is kept sealed during transportation. For example, JP2020-138742A (Patent Document 1) and JP2023-42848A (Patent Document 2) disclose a configuration in which the film sealing the spout can be cut off to open the pouch. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-138742 A [Patent Document 2] JP 2023-42848 A Summary of the Invention [Problem to be solved by the invention]

[0004] In such a pouch having a spout, there is an increasing demand for easier separation of the film at the portion sealing the spout.

[0005] An object of the present invention is to provide a pouch having a spout, which has a structure that allows the film portion sealing the spout to be easily cut off. [Means for solving the problem]

[0006] [1]: A pouch according to one aspect of the present disclosure comprises a packaging bag including a top sheet and a back sheet and capable of containing contents, and a spout for pouring the contents from the packaging bag, the packaging bag having a first side seal portion and a second side seal portion formed by sealing together an end of the top sheet and an end of the back sheet in a width direction, an upper seal portion formed by sealing together an upper part of the top sheet and an upper part of the back sheet, a lower seal portion formed by sealing together a lower part of the top sheet and a lower part of the back sheet, and a width direction of the upper seal portion. In the middle region, the inclined seal portion includes an intermediate seal portion where the top sheet and the back sheet are sealed so as to extend in a band-like shape toward the bottom, and an inclined seal portion where the top sheet and the back sheet are sealed so as to extend in a band-like shape from below the intermediate seal portion toward the first side seal portion, thereby dividing an enclosed space that hermetically contains the spout and an inclined seal portion that is surrounded by the intermediate seal portion, the top seal portion, the second side seal portion, the lower seal portion and the first side seal portion and divides a storage space that contains the contents.

[0007] The spout has a cylindrical portion for pouring out the contents, and a cap portion for opening and closing one end of the cylindrical portion, and the spout is fixed by sandwiching the cylindrical portion between the surface sheet and the back sheet at the inclined seal portion and tightly sealing it so that the cap portion is located in the sealed space and the other end side of the cylindrical portion is located in the storage space.

[0008] A first opening line is provided along the intermediate seal portion and the inclined seal portion in the area adjacent to the intermediate seal portion and the inclined seal portion on the top sheet and the back sheet of the sealed space, and a second opening line is provided in the intermediate seal portion and is convex in the opposite direction to the sealed space.

[0009] [2]: The pouch described in [1] has a plurality of third opening lines provided in the intermediate seal portion in each of the areas near both ends of the second opening line on the sealed space side, the third opening lines extending in a direction intersecting the second opening line.

[0010] [3]: The pouch described in [2], wherein the third opening line includes a opening line whose one end side intersects the second opening line and whose other end side reaches the sealed space.

[0011] [4]: In the pouch described in either [2] or [3], a step is provided in the upper seal portion facing the sealed space so as to be recessed toward the sealed space, and the step is defined by a horizontal step side and a vertical step side.

[0012] [5]: The pouch described in [4] includes a third opening line, one end of which intersects with the second opening line and the other end of which reaches the vertical step edge.

[0013] In any of the above described pouches, the third opening line includes a opening line whose one end side intersects with the second opening line and whose other end side does not reach the sealed space. The third opening line includes a opening line whose one end side does not intersect with the second opening line and whose other end side reaches the sealed space. The third opening line includes a opening line whose one end side intersects with the second opening line and whose other end side does not reach the vertical step side. The third opening line includes a opening line whose one end side does not intersect with the second opening line and whose other end side reaches the vertical step side.

[0014] [6]: A pouch according to another aspect of the present disclosure comprises a packaging bag including a top sheet and a back sheet and capable of accommodating a content, and a spout for pouring the content from the packaging bag, the packaging bag having a first side seal portion and a second side seal portion formed by sealing together an end of the top sheet and an end of the back sheet in a width direction, an upper seal portion formed by sealing together an upper portion of the top sheet and an upper portion of the back sheet, and a lower portion of the top sheet and a lower portion of the back sheet. a lower seal portion formed in a widthwise intermediate region of the upper seal portion, an intermediate seal portion in which the top sheet and the back sheet are sealed together so as to extend in a band-like shape downwards, and a sealed space that is surrounded by the upper seal portion, the intermediate seal portion, and the first side seal portion by sealing the top sheet and the back sheet together so as to extend in a band-like shape downwards from below the intermediate seal portion toward the first side seal portion, and that hermetically houses the spout, and and an inclined seal portion that is surrounded by the first side seal portion and partitions a storage space that contains the contents, the spout has a tubular portion for pouring the contents, and a cap portion that opens and closes one end side of the tubular portion, and the spout is fixed by being sandwiched and tightly sealed between the top sheet and the back sheet at the inclined seal portion so that the cap portion is located in the sealed space and the other end side of the tubular portion is located in the storage space, and the top sheet and the back sheet of the sealed space have A first opening line is provided along the intermediate seal portion and the inclined seal portion in a region adjacent to the intermediate seal portion and the inclined seal portion, and a second opening line is provided in the intermediate seal portion, which is convex in the opposite direction to the sealed space, and the first opening line includes an eleventh opening line located on the intermediate seal portion side and a twelfth opening line located on the first side seal portion side, with the center line of the tubular portion as the boundary, the eleventh opening line has a convex curved shape in a direction away from the inclined seal portion, and the twelfth opening line has a straight region extending along the inclined seal portion.

[0015] [7]: The pouch described in any one of [1] to [6] includes a hollow area in the area surrounded by the second opening line of the intermediate seal portion, in which the top sheet and the back sheet are not tightly sealed together. Effect of the Invention

[0016] According to this disclosure, in a pouch having a spout, it is possible to easily cut off the film at the portion sealing the spout. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a perspective view of a pouch according to a first embodiment. [Diagram 2] 2 is a cross-sectional view taken along line II-II in FIG. 1. [Diagram 3] FIG. 2 is a front view of the pouch of the first embodiment. [Figure 4] FIG. 1 is a first schematic diagram showing an opening operation for exposing a spout of the pouch of the first embodiment. [Diagram 5] FIG. 2 is a second schematic diagram showing the opening operation for exposing the spout of the pouch of embodiment 1. [Figure 6] FIG. 11 is a third schematic diagram showing the opening operation for exposing the spout of the pouch of embodiment 1. [Figure 7] FIG. 2 is a schematic diagram showing an operation of pouring the contents from a spout of the pouch of the first embodiment. [Figure 8] FIG. 11 is a front view of a pouch according to a second embodiment. [Figure 9] FIG. 11 is a front view of a pouch according to a third embodiment. [Figure 10] FIG. 13 is a front view of a pouch according to a fourth embodiment. [Figure 11] FIG. 13 is a front view of a pouch according to a fifth embodiment. [Figure 12] FIG. 23 is a front view of a pouch according to a sixth embodiment. [Figure 13] FIG. 13 is a front view of a pouch according to a seventh embodiment. [Figure 14]FIG. 13 is a first schematic diagram showing the opening operation for exposing the spout of the pouch of embodiment 7. [Figure 15] FIG. 23 is a second schematic diagram showing the opening operation for exposing the spout of the pouch of embodiment 7. [Figure 16] FIG. 13 is a third schematic diagram showing the opening operation for exposing the spout of the pouch of embodiment 7. [Figure 17] FIG. 13 is a front view showing a modified example of the pouch of embodiment 7. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Pouches according to the embodiments of the present invention will be described below with reference to the drawings. In the embodiments described below, when numbers, amounts, etc. are mentioned, the scope of the present invention is not necessarily limited to the numbers, amounts, etc., unless otherwise specified. The same reference numbers are used for the same or corresponding parts, and duplicate descriptions may not be repeated. It is intended from the beginning that the configurations in the embodiments will be used in appropriate combination.

[0019] In the following explanation using the figures, the areas indicated in light ink in the figures indicate the sealed areas of the sheet.

[0020] The contents are not particularly limited, but may include, for example, beverages such as sports drinks, foods such as ice cream and jelly, daily necessities such as shampoo, conditioner, body soap, detergent, fabric softener, or medicines.

[0021] (Embodiment 1: Pouch 1A) The configuration of a pouch 1A of the present embodiment will be described with reference to Fig. 1 to Fig. 3. Fig. 1 is a perspective view of pouch 1A, Fig. 2 is a cross-sectional view taken along line II-II in Fig. 1, and Fig. 3 is a front view of pouch 1A.

[0022] (Outline of pouch 1A) 1 to 3, pouch 1A includes a packaging bag 100 including a top sheet 101 and a back sheet 102 and capable of accommodating contents, and a spout 200 for pouring the contents from packaging bag 100. Top sheet 101 and back sheet 102 are made of a laminate including, for example, polyethylene terephthalate, aluminum, nylon, polyethylene, and polypropylene.

[0023] The packaging bag 100 includes a first side seal portion 111 and a second side seal portion 112 formed by sealing together the ends of the top sheet 101 and the back sheet 102 in the width direction (left-right direction in FIG. 3), a lower seal portion 113 formed by sealing together the lower part of the top sheet 101 and the lower part of the back sheet 102, and an upper seal portion 114 formed by sealing together the upper part of the top sheet 101 and the upper part of the back sheet 102. As shown by the dashed line in FIG. 3, a bottom gusset sheet 115 may be provided at the lower part of the top sheet 101 and the lower part of the back sheet 102 to make the pouch 1A into a standing pouch that can stand on its own. If the bottom gusset sheet 115 is not provided, the pouch 1A will be in the form of a flat pouch.

[0024] In addition, when the lower part of the top sheet 101 and the lower part of the back sheet 102 are sealed to each other, this means that it includes both a configuration in which the lower part of the top sheet 101 and the lower part of the back sheet 102 are directly sealed to each other (flat pouch) and a configuration in which they are indirectly sealed via a bottom gusset sheet (standing pouch).

[0025] The packaging bag 100 includes an intermediate seal portion 118 in which the top sheet 101 and the back sheet 102 are sealed in a strip-like manner extending downward in the widthwise middle region of the upper seal portion 114, and an inclined seal portion 116 in which the top sheet 101 and the back sheet 102 are sealed in a strip-like manner extending downward from below the intermediate seal portion 118 toward the first side seal portion 111, thereby dividing the packaging bag 100 into a sealed space 210 that is surrounded by the upper seal portion 114, the intermediate seal portion 118, and the first side seal portion 111 and hermetically accommodates the spout 200, and a storage space 220 that is surrounded by the intermediate seal portion 118, the upper seal portion 114, the second side seal portion 112, the upper seal portion 114, and the first side seal portion 111 and accommodates the contents.

[0026] The upper seal portion 114 facing the sealed space 210 is provided with a step 114d recessed toward the sealed space 210. This step 114d is defined by a horizontal step side 114x and a vertical step side 114y.

[0027] Spout 200 has cylindrical portion 200a for pouring the contents to the outside and cap portion 200b for opening and closing one end side of cylindrical portion 200a. Spout 200 is fixed by having cylindrical portion 200a sandwiched and tightly sealed between top sheet 101 and back sheet 102 at inclined seal portion 116 so that cap portion 200b is located in sealed space 210 and the other end side of cylindrical portion 200a is located in storage space 220.

[0028] When the central axis of the cylindrical portion 200a is defined as an imaginary axis C1, the cylindrical portion 200a is fixed to the inclined seal portion 116 so that the imaginary axis C1 is perpendicular to the inclination direction of the inclined seal portion 116.

[0029] As a method for sealing between the sheets that make up the packaging bag 100 and for sealing the area where the spout 200 is fixed to the inclined seal portion 116, various known methods such as fusion by heat sealing, ultrasonic sealing, high-frequency sealing, etc., or bonding with an adhesive may be used.

[0030] (Opening line) The front sheet 101 and the back sheet 102 of the sealed space 210 of this packaging bag 100 are provided with a first opening line L21 along the intermediate seal portion 118 and the inclined seal portion 116 in the area adjacent to the intermediate seal portion 118 and the inclined seal portion 116.

[0031] The first opening line L21 is provided along the middle seal portion 118 and the inclined seal portion 116. For example, there may be an eleventh opening line L11 extending from the upper seal portion 114 toward the tubular portion 200a, and a twelfth opening line L12 extending from the tubular portion 200a toward the first side seal portion 111. Furthermore, the eleventh opening line L11 may be a curved line that is convex toward the storage space 220 side, and the twelfth opening line L12 may be a straight line. The twelfth opening line L12 preferably has a straight region extending along the inclined seal portion 116, and its end portion reaches the first side seal portion 111. In the notation in the figure, the twelfth opening line L12 is provided so as to extend parallel to the inclined seal portion 116, but it is not necessary that they are strictly parallel, and it is sufficient that the twelfth opening line L12 is opened along the inclined seal portion 116. Therefore, even if there are no parallel portions, it is sufficient that the twelfth opening line L12 is a opening line that can be opened along the inclined seal portion 116.

[0032] The intermediate seal portion 118 is provided with a second opening line L22 that is convex in the opposite direction to the sealed space 210. In this embodiment, the second opening line L22 has a horizontal U-shape with a widened bottom, but is not limited to this shape, and can be a normal U-shape, a U-shape, or a triangular shape as long as it is convex in the opposite direction to the sealed space 210. As described later, the second opening line L22 is intended to be cut by placing a thumb on it, so it may have any shape as long as this purpose is achieved.

[0033] Furthermore, in the intermediate seal portion 118, a plurality of third opening lines L23 are provided in each of the areas near both ends of the second opening line L22 on the sealed space 210 side. In this embodiment, three third opening lines L23 are provided at the end on the sealed space 210 side, and three third opening lines L23 are provided at the end on the step 114d side.

[0034] The first opening line L21, the second opening line L22, and the third opening line L23 may be half-cut lines, perforation lines, cut lines, or combinations thereof, but in this embodiment, they are formed by laser irradiation. Preferably, the first opening line L21 and the third opening line L23 are half-cut lines, and the second opening line L22 is a cut line. The second opening line L22 may be a cut line in its entirety, or only a part of it may be connected to prevent the pouch from being opened inadvertently by the cut line being turned up, etc.

[0035] The three third opening lines L23 provided at the end of the bottom of the second opening line L22 on the sealed space 210 side are one 23a opening line L23a whose one end crosses the second opening line L22 and the other end does not reach the sealed space 210, one 23b opening line L23b whose one end crosses the second opening line L22 and the other end reaches the sealed space 210, and one 23c opening line L23c whose one end does not cross the second opening line L22 and the other end reaches the sealed space 210. The 23b opening line L23b and the 23c opening line L23c do not cross the first opening line L21.

[0036] The three third opening lines L23 provided at the end of the step 114d side of the bottom of the second opening line L22 include one 23d opening line L23d having one end that intersects the second opening line L22 and the other end that does not reach the vertical step edge 114y, one 23e opening line L23e having one end that intersects the second opening line L22 and the other end that reaches the vertical step edge 114y, and one 23f opening line L23f having one end that does not intersect the second opening line L22 and the other end that reaches the vertical step edge 114y.

[0037] Next, a usage form of pouch 1A having the above configuration will be described with reference to Fig. 4 to Fig. 7. Fig. 4 to Fig. 6 are first to third schematic diagrams showing an opening operation for exposing spout 200 of pouch 1A, and Fig. 7 is a schematic diagram showing an operation for pouring the contents from spout 200 of pouch 1A.

[0038] 4, for example, a user holds the upper side of the pouch 1A with the left hand 10, pinches the intermediate seal portion 118 between the thumb and index finger of the right hand 11 along the convex shape of the second opening line L22, and cuts off the intermediate seal portion 118 along the second opening line L22 with the thumb and index finger. This opens the second opening line L22 to form an opening. This makes it easier for the user's thumb and index finger to get caught in the opening, making it easier to pull the intermediate seal portion 118 to the side of the pouch 1A (in the direction of the arrow A in the figure) without the fingers slipping.

[0039] Next, as shown in Fig. 5, the spout 200 is pulled upward and outward (in the direction of the arrow A in the figure) with the thumb and index finger. In this case, it is easier to apply force without slipping than to pinch the edge of the outer periphery of a conventional pouch and tear it. After that, one of the third opening lines L23 provided at the bottom of the second opening line L22 is torn.

[0040] The three third opening lines L23 on the step 114d side of the bottom of the second opening line L22 have their tearing portions immediately reach the step 114d of the pouch 1A. As a result, the force tearing two places on the step 114d side and the sealed space 210 side is concentrated at one place on the three third opening lines L23 on the sealed space 210 side. By providing opening lines of various shapes as described above as the third opening lines L23, stress is concentrated on one of the opening lines, making it easier to tear.

[0041] When pouch 1A is viewed in plan, top sheet 101 and back sheet 102 of sealed space 210 are cut in the outward direction toward spout 200 (the direction of arrow A in the figure), so that top sheet 101 and back sheet 102 enveloping spout 200 are cut like taking off a hat. As a result, sealed space 210 can be opened along first opening line L21 without getting caught on spout 200. In addition, the risk of unintentionally tearing toward the inside of pouch 1A can be reduced.

[0042] As a result, as shown in Figure 6, the opening speed accelerates over a short distance and with little force, allowing the front sheet 101 and back sheet 102 of the sealed space 210 enclosing the spout 200 to be pulled forcefully outward along the first opening line L21 and cut off (in the direction of arrow B in the figure).

[0043] 7, after the seal of sealed space 210 is pulled away from the storage space 220 side, cap portion 200b provided on spout 200 is opened and pouch 1A is tilted, making it possible to pour content M onto an object. When cap portion 200b is fixed to cylindrical portion 200a using hinge member 260 so as to be openable and closable, hinge member 260 is preferably provided on the upper seal portion 114 side of cylindrical portion 200a.

[0044] As a result, when the contents M are poured onto an object, the cap part 200b is positioned upward, and the cap part 200b can be prevented from getting wet with the contents M. The cap part 200b is not limited to one using the hinge member 260, and a removable screw-type cap may be adopted. By adopting such a configuration, it is possible to prevent the top sheet 101 and the back sheet 102 from accidentally getting caught on the cap part 200b and causing the cap part 200b to be unintentionally opened when the top sheet 101 and the back sheet 102 are separated to expose the spout 200.

[0045] (Embodiment 2: Pouch 1B) The configuration of pouch 1B of the present embodiment will be described with reference to Fig. 8. Fig. 8 is a front view of pouch 1B. The basic configuration of pouch 1B of the present embodiment is the same as pouch 1A of the above-mentioned embodiment 1. Pouch 1A of the above-mentioned embodiment 1 has step 114d above sealed space 210, but pouch 1B of the present embodiment has no step above sealed space 210, and the upper end of upper seal portion 114 is linear across the entire width.

[0046] In the pouch 1B in this embodiment, the three third opening lines L23 on the sealed space 210 side reach the sealed space 210 first, and the tearing portion reaches the first opening line L21. After that, the force pulling the middle seal portion 118 is concentrated at one place of the upper three third opening lines L23. As a result, the top sheet 101 and the back sheet 102 of the sealed space 210 are cut in the outward direction of the spout 200 side (the direction of the arrow A in the figure), so that the top sheet 101 and the back sheet 102 wrapping the spout 200 are cut along the first opening line L21 like taking off a hat. As a result, the sealed space 210 can be opened without being caught by the spout 200. In addition, the risk of being unintentionally torn toward the inside of the pouch 1A can be reduced.

[0047] (Embodiment 3: Pouch 1C) The configuration of the pouch 1C of the present embodiment will be described with reference to Fig. 9. Fig. 9 is a front view of the pouch 1C. The basic configuration of the pouch 1C of the present embodiment is the same as that of the pouch 1A of the above-mentioned embodiment 1. The pouch 1C of the present embodiment is different from the pouch 1A of the above-mentioned embodiment 1 in the shape of the third opening line L23 provided at the bottom of the second opening line L22.

[0048] Four opening lines are provided at the end of the bottom of the second opening line L22 on the sealed space 210 side, among which the 23a opening line L23a, the 23b opening line L23b, and the 23c opening line L23c are the same, and further, the 23g opening line L23g is provided. One end of this 23g opening line L23g does not intersect with the first opening line L21, and the other end does not intersect with the second opening line L22.

[0049] Four opening lines are also provided at the end of the step 114d side of the bottom of the second opening line L22, among which the 23d opening line L23d, the 23e opening line 23e, and the 23f opening line L23f are the same, and further, the 23h opening line L23h is provided. One end of this 23h opening line L23h does not intersect with the second opening line L22, and the other end does not reach the vertical step side 114y.

[0050] Even with the pouch 1C of this configuration, even if the 23g opening line L23g and the 23h opening line L23h are added to the pouch 1A of the above-mentioned embodiment 1, the same functional effects can be obtained as with the pouch 1A of the above-mentioned embodiment 1.

[0051] (Embodiment 4: Pouch 1D) The configuration of pouch 1D of this embodiment will be described with reference to Fig. 10. Fig. 10 is a front view of pouch 1D. The basic configuration of pouch 1D of this embodiment is the same as pouch 1C of embodiment 3. Pouch 1C of embodiment 1 has step 114d above sealed space 210, but pouch 1D of this embodiment has no step above sealed space 210, and the upper end of upper seal portion 114 is linear across the entire width.

[0052] Therefore, the pouch 1D in this embodiment can also provide the same effects as those of the pouch 1B in the second embodiment and the pouch 1C in the third embodiment.

[0053] (Embodiment 5: Pouch 1E) The configuration of the pouch 1E of the present embodiment will be described with reference to Fig. 11. Fig. 11 is a front view of the pouch 1E. The basic configuration of the pouch 1E of the present embodiment is the same as that of the pouch 1A of the above-mentioned embodiment 1. The pouch 1E of the present embodiment is different from the pouch 1A of the above-mentioned embodiment 1 in the shape of the third opening line L23 provided at the bottom of the first opening line L21 and the second opening line L22.

[0054] At the end of the bottom of the second opening line L22 on the sealed space 210 side, two opening lines, the 23i opening line L23i and the 23j opening line L23j, are provided. One end of the 23i opening line L23i crosses the second opening line L22, and the other end crosses the first opening line L21. One end of the 23j opening line L23j does not cross the second opening line L22, and the other end crosses the first opening line L21. Furthermore, the 11th opening line L11 at the upper end of the first opening line L21 is provided so as to be continuous with the other ends of the 23i opening line L23i and the 23j opening line L23j. It is preferable that the 12th opening line L12 has a straight region extending along the inclined seal portion 116, and the end reaches the first side seal portion 111.

[0055] Two opening lines are also provided at the end on the step 114d side, namely, the 23e opening line 23e and the 23f opening line L23f.

[0056] The pouch 1E having this configuration can also provide the same effects as those of the pouch 1A of the first embodiment.

[0057] (Embodiment 6: Pouch 1F) The configuration of pouch 1F of this embodiment will be described with reference to Fig. 12. Fig. 12 is a front view of pouch 1F. The basic configuration of pouch 1F of this embodiment is the same as pouch 1E of embodiment 5. Pouch 1E of embodiment 5 has step 114d above sealed space 210, but pouch 1F of this embodiment has no step above sealed space 210, and the upper end of upper seal portion 114 is linear across the entire width.

[0058] Therefore, the pouch 1F in this embodiment can also provide the same effects as those of the pouch 1B in the second embodiment and the pouch 1E in the fifth embodiment.

[0059] In each of the above embodiments, a second opening line L22 that is convex toward the opposite direction to the sealed space 210 is provided in the intermediate seal portion 118, and multiple third opening lines L23 extending in a direction intersecting the second opening line L22 are provided in each of the adjacent areas of both ends of the second opening line L22 on the sealed space 210 side.However, even if the third opening line L23 is not provided and only the second opening line L22 is provided in the intermediate seal portion 118, it is possible to pull the surface sheet 101 and the back sheet 102 of the sealed space 210 that encloses the spout 200 outward along the first opening line L21 and cut it off.

[0060] (Embodiment 7: Pouch 1G) The configuration of a pouch 1G of this embodiment will be described with reference to Fig. 13 to Fig. 17. Fig. 13 is a front view of pouch 1G, Fig. 14 to Fig. 16 are first to third schematic views showing an opening operation for exposing spout 200 of pouch 1G, and Fig. 17 is a front view showing a modified example of pouch 1G.

[0061] The basic configuration of the pouch 1G of this embodiment is the same as that of the pouch 1E of the above-mentioned embodiment 5. The differences are that a hollow area 230 is provided in the intermediate seal portion 118 and that the shape of the first opening line L21 is different.

[0062] The hollow area 230 provided in the intermediate seal portion 118 is provided with a second opening line L22 so as to surround the periphery of the hollow area 230. The second opening line L22 has a convex shape (U-shaped) facing in the opposite direction to the sealed space 210. The hollow area 230 is an area in the intermediate seal portion 118 where the top sheet 101 and the back sheet 102 are not tightly sealed, and may have a slight bulge due to the inclusion of air. The shape of the hollow area 230 is not limited to the elliptical shape shown in the figure, and various shapes can be adopted. The area surrounded by the second opening line L22 constitutes the gripping portion 118T.

[0063] The first opening line L21 includes an eleventh opening line L11 located on the intermediate seal portion 118 side and a twelfth opening line L12 located on the first side seal portion 111 side, with the center line C1 of the cylindrical portion 200a of the spout 200 as the boundary. Specifically, the eleventh opening line L11 has a curved shape that is convex in a direction away from the inclined seal portion 116. One end of the eleventh opening line L11 extends to reach the intermediate seal portion 118, and the other end reaches the grip portion 118T.

[0064] Before opening, one end of the 11th opening line L11 does not intersect with the second opening line L22, but as shown in the later use state, when the opening operation is proceeded with using the gripping portion 118T, the tear line of the second opening line L22 progresses and reaches one end of the 11th opening line L11, causing the tear line to intersect and lead to a tear in the 11th opening line L11.

[0065] The twelfth opening line L12 has a straight region that extends along the inclined seal portion 116 while smoothly connecting to the curved shape of the other end of the eleventh opening line L11, and its end reaches the first side seal portion 111.

[0066] Next, a usage pattern of the pouch 1G having the above-mentioned configuration will be described with reference to Figs.

[0067] Referring to FIG. 14, the user separates the gripping portion 118T from the intermediate seal portion 118 along the second opening line L22, and lifts up the gripping portion 118T (arrow P in the figure).

[0068] 15, a user, for example, grasps the upper side of pouch 1G with left hand 10, pinches gripping portion 118T between the thumb and index finger of right hand 11, and pulls gripping portion 118T toward spout 200 (arrow A in the figure).

[0069] Referring to Figure 16, by pulling gripping portion 118T towards spout 200, horizontal step edge 114x is torn, and similar to the opening operation shown in Figures 4 to 6 described above, the opening speed is accelerated with less force, allowing front sheet 101 and back sheet 102 of the sealed space 210 enclosing spout 200 to be pulled forcefully outward along the first opening line L21 and cut off (in the direction of arrow B in the figure).

[0070] As shown in Fig. 16, when the top sheet 101 and the back sheet 102 of the sealed space 210 are cut away, a convex portion 270 may remain above the U-shaped second opening line L22. In order to facilitate cutting away the convex portion 270, a fourth opening line L41 may be provided in advance, as shown in Fig. 17, extending from the upper side of the second opening line L22 to the upper side of the upper seal portion 114. This allows the remaining convex portion 270 to be easily cut away.

[0071] According to the pouch configuration in each of the above embodiments, the amount of resin used can be significantly reduced compared to containers made of molded resin, and after use, the pouch can be folded up compactly to reduce its volume and can be discarded.

[0072] Although the pouch of the present disclosure has been described above in the embodiments, the 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]

[0073] 1A, 1B, 1C, 1D, 1E, 1F pouch, 10 left hand, 11 right hand, L23a 23a opening line, L23b 23b opening line, L23c 23c opening line, L23d 23d opening line, L23e 23e opening line, L23f 23f opening line, L23g 23g opening line, L23h 23h opening line, L23i 23i opening line, L23j 23j opening line, 100 packaging bag, 101 surface sheet, 102 back sheet, 111 first side seal portion, 112 second side seal portion, 113 lower seal portion, 114 upper seal portion, 114d step, 114x horizontal step side, 114y vertical step side, 115 bottom gusset sheet, 116 Inclined seal portion, 118 intermediate seal portion, 200 spout, 200a cylindrical portion, 200b cap portion, 210 sealed space, 220 storage space, 230 hollow area, 260 hinge member, C1 imaginary axis line, L11 eleventh opening line, L12 twelfth opening line, L21 first opening, L22 second opening line, L23 third opening line, L41 fourth opening line, M contents.

Claims

1. A packaging bag including a top sheet and a back sheet and capable of accommodating contents; A spout for pouring the contents from the packaging bag, The packaging bag is a first side seal portion and a second side seal portion formed by sealing an end portion of the top sheet and an end portion of the back sheet to each other in the width direction; an upper seal portion formed by sealing an upper portion of the top sheet and an upper portion of the back sheet to each other; a lower seal portion formed by sealing a lower portion of the top sheet and a lower portion of the back sheet to each other; an intermediate seal portion in which the top sheet and the back sheet are sealed together so as to extend downward in a strip-like shape in a widthwise intermediate region of the upper seal portion; a sloped seal portion that divides an enclosed space that is surrounded by the upper seal portion, the intermediate seal portion, and the first side seal portion and that hermetically accommodates the spout, and a storage space that is surrounded by the intermediate seal portion, the upper seal portion, the second side seal portion, the lower seal portion, and the first side seal portion and that accommodates the contents, by sealing the top sheet and the back sheet so as to extend in a strip shape from below the intermediate seal portion toward the first side seal portion; Including, The spout has a cylindrical portion for pouring out the content and a cap portion for opening and closing one end side of the cylindrical portion, The spout is fixed by being sandwiched and tightly sealed between the top sheet and the back sheet at the inclined seal portion so that the cap portion is located in the sealed space and the other end side of the cylindrical portion is located in the storage space, A first opening line is provided along the intermediate seal portion and the inclined seal portion in a region adjacent to the intermediate seal portion and the inclined seal portion on the top sheet and the back sheet of the sealed space, The intermediate seal portion is provided with a second opening line that is convex in the opposite direction to the sealed space. Pouch.

2. The intermediate seal portion is provided with a plurality of third opening lines extending in a direction intersecting the second opening line in each of the regions near both ends of the second opening line on the sealed space side.

2. The pouch of claim 1.

3. The third opening line includes a opening line whose one end side intersects the second opening line and whose other end side reaches the sealed space, The pouch of claim 2.

4. The upper seal portion facing the sealed space is provided with a step recessed toward the sealed space, The step is defined by a horizontal step side and a vertical step side. The pouch of claim 2.

5. The third opening line includes an opening line whose one end side intersects the second opening line and whose other end side reaches the vertical step side, 5. The pouch of claim 4.

6. A packaging bag including a top sheet and a back sheet and capable of accommodating contents; A spout for pouring the contents from the packaging bag, The packaging bag is a first side seal portion and a second side seal portion formed by sealing an end portion of the top sheet and an end portion of the back sheet to each other in the width direction; an upper seal portion formed by sealing an upper portion of the top sheet and an upper portion of the back sheet to each other; a lower seal portion formed by sealing a lower portion of the top sheet and a lower portion of the back sheet to each other; an intermediate seal portion in which the top sheet and the back sheet are sealed together so as to extend downward in a strip-like shape in a widthwise intermediate region of the upper seal portion; a sloped seal portion that divides an enclosed space that is surrounded by the upper seal portion, the intermediate seal portion, and the first side seal portion and that hermetically accommodates the spout, and a storage space that is surrounded by the intermediate seal portion, the upper seal portion, the second side seal portion, the lower seal portion, and the first side seal portion and that accommodates the contents, by sealing the top sheet and the back sheet so as to extend in a strip shape from below the intermediate seal portion toward the first side seal portion; Including, The spout has a cylindrical portion for pouring out the content and a cap portion for opening and closing one end side of the cylindrical portion, The spout is fixed by being sandwiched and tightly sealed between the top sheet and the back sheet at the inclined seal portion so that the cap portion is located in the sealed space and the other end side of the cylindrical portion is located in the storage space, A first opening line is provided along the intermediate seal portion and the inclined seal portion in a region adjacent to the intermediate seal portion and the inclined seal portion on the top sheet and the back sheet of the sealed space, The intermediate seal portion is provided with a second opening line that is convex toward the opposite direction to the sealed space, The first opening line is a 11th opening line located on the side of the intermediate seal portion and a 12th opening line located on the side of the first side seal portion, the 12th opening line being separated by a center line of the tubular portion; The eleventh opening line has a curved shape that is convex in a direction away from the inclined seal portion, The twelfth opening line has a straight region extending along the inclined seal portion. Pouch.

7. The region of the intermediate seal portion surrounded by the second tear line includes a hollow region where the top sheet and the back sheet are not tightly sealed. The pouch according to any one of claims 1 to 6.

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