Packaging bag with spout

Abstract

To provide a packaging bag with spout which has structure capable of suppressing generation of a separation piece while securing easy-open property of a body part.SOLUTION: A packaging bag 100 with spout includes a surface film part 20, a rear surface film part 30 and a bottom surface film part 40, and also has a sealed peripheral edge seal part 50 at a peripheral edge part. The packaging bag has a body part 10 capable of storing a content, and a spout part 60 for pouring out the content from the body part 10. At the peripheral edge seal part 50, a body opening start point part 71 is formed for opening the body part 10. A part of the peripheral edge seal part 50 is a separation suppression part 55 disposed on an extension line 201 of the body opening start point part 71. At a region surrounded with the peripheral edge seal part 50 in the body part 10, an emboss 80 protruding outward is formed, and the body opening start point part 71 extends toward the emboss 80.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a packaging bag with a spout. [Background technology]

[0002] The packaging bag with a pouring outlet described in Patent Document 1 (described in the document as a refill pouch) has a surface film portion, a back film portion, and a bottom film portion (described in the document as a laminated film), and has a peripheral seal portion (described in the document as a heat seal portion) sealed at the periphery, and has a main body portion capable of containing the contents, and a pouring outlet portion for pouring the contents from the main body portion, and a main body opening starting point portion for opening the main body portion (described in the document as a pouch opening means) is formed in the peripheral seal portion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2004-43000 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the case of soft packaging bags made of film, such as the technology in Patent Document 1, the opening of the main body cannot always be sufficiently expanded, and the film parts may adhere to each other, making it difficult to clean the inside of the main body after the contents have been used up. Furthermore, when the main body is opened, a portion of the main body is easily completely separated from the remaining portion, resulting in a separated piece.

[0005] The present invention has been made in consideration of the above problems, and relates to a packaging bag with a spout that has a structure that can suppress the generation of separation pieces while ensuring easy opening of the main body. [Means for solving the problem]

[0006] The present invention relates to a packaging bag with a pouring outlet, which has a surface film portion, a back film portion, and a bottom film portion, and has a peripheral seal portion sealed at the periphery, the packaging bag having a main body portion capable of containing contents, and a pouring outlet portion for pouring the contents from the main body portion, the peripheral seal portion having a main body opening starting point portion for opening the main body portion, a portion of the peripheral seal portion being a separation prevention portion that is arranged on an extension of the main body opening starting point portion, and an embossment that is convex outwardly is formed in the area of ​​the main body portion that is surrounded by the peripheral seal portion, and the main body opening starting point portion extends toward the embossment. Effect of the Invention

[0007] According to the present invention, it is possible to suppress the generation of separation pieces while ensuring the easy opening of the main body portion. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a front view of a packaging bag with a spout according to a first embodiment. [Diagram 2] FIG. 2 is a cross-sectional view taken along the line AA shown in FIG. [Diagram 3] 2 is an exploded perspective view showing a front film portion, a back film portion, and a bottom film portion in the first embodiment. FIG. [Figure 4] FIG. 2 is a partial enlarged view of part C shown in FIG. [Diagram 5] FIG. 1 is a front view of a packaging bag with a spout according to a first embodiment, showing a state in which the main body is opened after the contents have been used up. [Figure 6] 2 is a cross-sectional view of a packaging bag with a spout according to a first modified example of the first embodiment, taken along a line corresponding to the AA line shown in FIG. [Figure 7] FIG. 4 is a front view of a packaging bag with a spout according to a second modified example of the first embodiment. [Figure 8] FIG. 11 is a front view of a packaging bag with a spout according to a third modified example of the first embodiment. [Figure 9]FIG. 6 is a front view of a packaging bag with a spout according to a second embodiment. [Figure 10] FIG. 11 is a front view of a packaging bag with a spout according to a third embodiment. [Figure 11] FIG. 13 is a front view of a packaging bag with a spout according to a modified example of the third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same components are designated by the same reference numerals, and duplicated descriptions will be omitted as appropriate.

[0010] [First embodiment] First, the first embodiment will be described with reference to FIGS. The packaging bag with a spout 100 of this embodiment has a front film portion 20, a back film portion 30, and a bottom film portion 40, and also has a peripheral seal portion 50 sealed around the periphery. The spout-equipped packaging bag 100 has a main body portion 10 capable of accommodating contents, and a spout portion 60 for pouring the contents from the main body portion 10. A main body opening starting point 71 for opening the main body 10 is formed in the peripheral seal portion 50 . A portion of the peripheral seal portion 50 serves as a separation prevention portion 55 that is disposed on an extension line 201 of the main body opening starting point portion 71 . In the area of ​​the main body 10 surrounded by the peripheral seal portion 50 (i.e., the area inside the peripheral seal portion 50), an embossment 80 is formed that protrudes outward, and the main body opening starting point 71 extends toward the embossment 80. In the spout-equipped packaging bag 100, the area surrounded by the peripheral seal portion 50 is a region in which the film portions (front film portion 20, back film portion 30, and bottom film portion 40) are not joined to one another, and constitutes a storage area 15 in which the contents are stored. The storage area 15 includes the inside of the main body portion 10 and the inside of the spout portion 60. Further, extension line 201 of main body opening starting point 71 is a straight line extending from the innermost part of main body opening starting point 71 in the depth direction of main body opening starting point 71 . Furthermore, "the starting point 71 of the main body opening extends toward the embossment 80" means that at least a portion of the embossment 80 is located on an extension line 201 of the starting point 71 of the main body opening, and preferably the embossment 80 intersects with the extension line 201.

[0011] In the packaging bag 100 with a spout, at least when the contents are contained therein, the contents are interposed between the front film portion 20 and the back film portion 30, and the front film portion 20 and the back film portion 30 are maintained in a bulging state in a direction away from each other. On the other hand, after the contents have been used up, the front film portion 20 and the back film portion 30 become flat and tend to come into close contact with each other. In addition, when a packaging bag formed of films (front film portion 20, back film portion 30, and bottom film portion 40) such as the spout-equipped packaging bag 100 according to this embodiment is recycled horizontally after the contents are used up, it is preferable to break the main body portion 10 to form openings 17a, 17b (see FIG. 5) and wash the inside of the main body portion 10 (storage area 15) with washing water (e.g., water) through the openings 17a, 17b. In addition, from the viewpoint of efficiently recycling the entire main body portion 10, it is preferable that the portion 18 on one side of the main body portion 10 and the portion 19 on the other side of the main body portion 10 are not completely separated from each other and become separated pieces based on the openings 17a, 17b (the portion 18 on one side of the main body portion 10 and the portion 19 on the other side of the main body portion 10 are maintained in a state of being connected to each other).

[0012] In the present invention, when opening the main body portion 10, the main body portion 10 is torn from the main body opening starting point 71 toward the separation suppression portion 55 along the extension line 201 (described in detail later). That is, the opening direction of the main body portion 10 is the extension direction of the extension line 201. However, in the present invention, the opening direction of the main body portion 10 does not necessarily have to completely match the extension direction of the extension line 201, and may be any direction that starts from the main body opening starting point 71 and includes at least a component of the extension direction of the extension line 201. Therefore, the opening direction of the main body portion 10 may be, for example, a direction that starts from the main body opening starting point 71 and gradually inclines while moving away from the extension line 201. However, when the opening direction of the main body 10 is a direction that starts from the main body opening starting point 71 and gradually moves away from the extension line 201, it is preferable that the opening direction is a direction that is included in the range of a vertex angle of 60° (the area between the dotted lines 202, 203) when viewed from the front, with the main body opening starting point 71 as its vertex and the extension line 201 of the main body opening starting point 71 as its bisector.

[0013] According to this embodiment, the peripheral seal portion 50 is formed with a main body opening starting point 71 for opening the main body portion 10. Therefore, by pinching the vicinity of the main body opening starting point 71 in the main body portion 10 with the fingers and tearing the main body portion 10 along the extension line 201 starting from the main body opening starting point 71, the openings 17a, 17b (cracks) can be easily formed in the main body portion 10. Note that the openings 17a, 17b referred to here are at least a portion of the cracks constituting the openings 17a, 17b that reach the storage area 15. In addition, a part of the peripheral seal portion 50 is a separation suppression portion 55 arranged on an extension line 201 of the main body opening starting point portion 71. Here, the separation suppression portion 55 is a portion that is less likely to break than other portions of the main body portion 10 (excluding the peripheral seal portion 50). Therefore, when the main body portion 10 is torn along the extension line 201 of the main body opening starting point portion 71, the openings 17a and 17b can be made to terminate near the separation suppression portion 55. Therefore, the state in which the portion 18 on one side and the portion 19 on the other side of the main body portion 10 are connected to each other via the separation suppression portion 55 can be well maintained with respect to the openings 17a and 17b. That is, as shown in FIG. 5, when the main body portion 10 is opened, the portion 18 on one side and the portion 19 on the other side are separated from each other to prevent separation pieces from being generated. Here, in a packaging bag formed from a film, if it does not have embossing 80, the film portions (in this embodiment, front film portion 20 and back film portion 30) will adhere to each other, and it may not be possible to ensure sufficient expansion of openings 17a, 17b (see Figure 2 or Figure 5) when pouring cleaning water. In view of such circumstances, in this embodiment, the main body opening starting point 71 extends toward the embossment 80. Therefore, as shown in FIG. 2 or FIG. 5, the openings 17a, 17b of the main body 10 can be formed to include a part of the embossment 80 (embossed line). At least in the region where the embossment 80 is formed, the film parts (the front film part 20 and the back film part 30) are spaced apart from each other. This makes it possible to prevent the film parts (the front film part 20 and the back film part 30) from completely adhering to each other in the openings 17a, 17b and their vicinity, so that the degree of expansion of the openings 17a, 17b can be sufficiently ensured. More specifically, for example, when washing water is poured into the main body 10 through the openings 17a, 17b, it becomes easier to push the openings 17a, 17b wide by the water pressure of the washing water or to insert a finger into the openings 17a, 17b to widen the openings 17a, 17b. In this manner, according to this embodiment, while ensuring the easy opening property of the main body portion 10, the occurrence of separation pieces can be suppressed. Furthermore, for example, by selectively providing an embossment 80 to a packaging bag 100 with a spout that is made of a recyclable material and not providing an embossment 80 to a packaging bag 100 that is not made of a recyclable material, a user can easily identify whether or not a packaging bag is recyclable by using the presence or absence of the embossment 80 as an indicator.

[0014] The shape of the spout-equipped packaging bag 100 according to the present invention is not particularly limited, and may be a shape that is self-supporting, or a shape that is not self-supporting but is intended to be placed lying down. However, in the case of this embodiment, the spout-equipped packaging bag 100 has a bottom gusset 13 and is in a shape that is self-supporting.

[0015] In this embodiment, unless otherwise specified, the positional relationships (upper and lower relationships, etc.) of the components of the packaging bag with a spout 100 are described when the packaging bag with a spout 100 is viewed in a direction perpendicular to the surface of the front film part 20 (or back film part 30) (see FIG. 1 ) before the contents are placed in it or after the contents have been discharged and the packaging bag with a spout 100 is flattened so that the inner surfaces of the front film part 20 and the back film part 30 are in surface contact with each other. However, the positional relationships in these descriptions do not necessarily match the positional relationships when the packaging bag with a spout 100 is in use or manufactured. Further, with regard to the positional relationship of each component of the packaging bag 100 with a spout, the positional relationship shown in each drawing may be explained. As an example, one side in the axial direction of the main body 10 is referred to as the lower side (lower side), and the other side in the axial direction of the main body 10 is referred to as the upper side (upper side). Also, the front side of the packaging bag 100 with a spout (the front side of the paper in FIG. 1) is referred to as the front, the back side of the packaging bag 100 with a spout (the back side in FIG. 1) is referred to as the rear, the left side when facing the surface of the packaging bag 100 with a spout (the left side in FIG. 1) is referred to as the left side, and the right side when facing the surface of the packaging bag 100 with a spout (the right side in FIG. 1) is referred to as the right side. Also, the left-right direction of the packaging bag 100 with a spout may be referred to as the width direction.

[0016] In the present invention, the type of contents is not particularly limited. Examples of the contents include shampoo, conditioner, body soap, detergent, bleach, fabric softener, beverages, food, engine oil, chemicals, etc. The contents may be liquid (including a paste-like substance) or may be solid (for example, granular (including granular) or powder-like substance). In this embodiment, the content is, for example, a liquid. When the content is a liquid, the viscosity of the content is, for example, at 30°C, preferably 1 mPa·s or more and 120,000 mPa·s or less (measured with a B-type viscometer, for example, Viscometer TV-10 or Viscometer TVB-10 manufactured by Toki Sangyo Co., Ltd.), and more preferably 1 mPa·s or more and 60,000 mPa·s or less.

[0017] The spout-equipped packaging bag 100 is formed into a bag shape by joining the peripheral edges of a front film portion 20, a back film portion 30, and a bottom film portion 40 together. The spout-equipped packaging bag 100 has, for example, a body portion 11 and a bottom gusset 13 disposed below the body portion 11 . In this embodiment, a portion of the body 11 constitutes the spout 60, and the portion of the body 11 other than the spout 60 and the bottom gusset 13 constitute the main body 10.

[0018] The front shape of the body 11 (excluding the area where the spout 60 is formed) is not particularly limited, but in this embodiment, for example, as shown in FIG. 1, it has a vertically elongated shape with a substantially constant width. The body 11 has, for example, a front portion 11a (in this embodiment, the front panel) and a back portion 11b (in this embodiment, the rear panel) which face each other with the storage area 15 in between (see Figures 1 and 2). In the following description, the front side is the front portion 11a side, and the back side is the back portion 11b side. In this embodiment, the front portion 11a and the back portion 11b are formed to have the same shape and dimensions. For this reason, the rear view shape of the back portion 11b (back film portion 30) is not shown in the figure. The bottom gusset 13 connects the lower edge of the front surface portion 11a and the lower edge of the back surface portion 11b to each other.

[0019] A spout 60 is disposed at one corner on the upper end side of the body 11. In the spout 60, a peripheral seal 50 (more specifically, an upper edge seal 51 and a side edge seal 53a, which will be described later) is formed in a shape such that the storage area 15 gradually narrows toward the corner on the upper end side of the body 11. However, in the spout 60, the peripheral seal 50 may be formed in a shape such that the storage area 15 gradually widens toward the corner on the upper end side of the body 11, or the storage area 15 in the spout 60 may be straight. Of the storage area 15, the portion that corresponds in particular to the spout portion 60 is a pouring flow path 68 through which the contents pass when the contents are poured out of the packaging bag 100 with a pouring outlet. The intended opening portion 65 of the pouring outlet portion 60 extends in a direction crossing the pouring flow path 68 . Here, the intended opening portion 65 is a portion where an opening 61 (see Figure 5) is intended to be formed in the spout portion 60 in order to pour the contents of the storage area 15 out of the packaging bag 100 with a spout. In the spout portion 60, an opening guide line 67 formed of a half-cut groove, a perforation, or the like is formed along the intended opening portion 65. However, the present invention is not limited to this example, and the opening guide line 67 does not have to be formed. Also, a linear indication may be provided along the intended opening portion 65 by printing, etc. In either case, it is preferable that a pouring opening starting point portion 76 (described in detail later) for making it easier to break the pouring outlet portion 60 along the intended opening portion 65 is formed near the intended opening portion 65. In other words, the intended opening portion 65 is a linear region extending in the direction of the cut of the pouring opening starting point portion 76 (the depth direction of the pouring opening starting point portion 76). In the spout portion 60, the portion of the body portion 11 on the above-mentioned corner side with the intended opening portion 65 as the boundary is a tear tab 66 that is pinched by the user when forming an opening 61 in the spout portion 60. Note that, when the opening 61 is formed in the spout portion 60, the tear tab 66 is cut off from the body portion 11. As shown in FIG. 1, a first cutout portion 62 and a second cutout portion 64 are formed on the periphery of the body portion 11 with a corner portion (pouring outlet portion 60) on the upper end side of the body portion 11 in between. In this manner, the spout portion 60 is formed at one corner on the upper end side of the body portion 11 so as to protrude obliquely upward. However, in the present invention, the position of the spout portion 60 is not limited to this example, and can be set appropriately depending on the shape and application of the packaging bag 100 with a spout.

[0020] In the present invention, the spout part 60 may be configured, for example, by a spout member (not shown) having a plug structure that can be repeatedly opened and closed. In this case, the spout part 60 may be provided with a screw thread that can be sealed with a cap or a cap with a pump. The spout member that constitutes the spout portion 60 is formed by, for example, injection molding. In the case of such a configuration, when opening the main body 10, the main body 10 can be smoothly torn apart while gripping the spout portion 60 (spout member).

[0021] As described above, the spout-equipped packaging bag 100 has a front film portion 20, a back film portion 30, and a bottom film portion . The front film portion 20 constitutes the front side (front portion 11a) of the body portion 11, and the back film portion 30 constitutes the back side (back portion 11b) of the body portion 11. The bottom film portion 40 constitutes the bottom gusset 13, for example. In this embodiment, the front film portion 20 (front portion 11a) and the back film portion 30 (back portion 11b) are formed to have, for example, the same shape and the same dimensions as each other. In the present embodiment, the front film portion 20, the back film portion 30, and the bottom film portion 40 are each formed separately. It should be noted that the present invention is not limited to this example, and the packaging bag 100 with a spout may have one packaging bag constituent sheet (not shown), and portions of the packaging bag constituent sheet may each constitute the surface film portion 20, the back film portion 30, and the bottom film portion 40.

[0022] Each of the front film portion 20, the back film portion 30 and the bottom film portion 40 is a resin film layer made of a resin material, and preferably includes one type of resin layer selected from the group consisting of polyethylene, polypropylene, polyester and polyamide. The front film portion 20, the back film portion 30 and the bottom film portion 40 are each formed, for example, from the same type of resin layer. The material of the resin layer constituting each of the front film portion 20, the back film portion 30, and the bottom film portion 40 is not particularly limited, but may be, for example, a polyethylene-based material such as biaxially oriented polyethylene (BOPE), high density polyethylene (HDPE), medium density polyethylene (MDPE), low density polyethylene (LDPE), linear low density polyethylene (LLDPE), ultra-low density polyethylene (ULDPE), or ethylene-vinyl alcohol copolymer (EVOH), or oriented polypropylene (OPP), unoriented polypropylene (CPP), isotactic PP, syndiotactic PP, atactic PP, or the like. More preferably, the material is any one of polypropylene-based materials such as block PP, random PP, and block PP; polyester-based materials such as polyethylene terephthalate (PET), amorphous polyethylene terephthalate (amorphous PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), and polybutylene naphthalate (PBN); and polyamide-based materials such as oriented nylon (ONy), unoriented nylon (CNy), nylon 6, nylon 66, nylon 11, nylon 12, and MXD6. Of these, the polyethylene-based materials are particularly preferred.

[0023] Each of the front film part 20, the back film part 30, and the bottom film part 40 is, for example, a laminate of multiple film layers serving as a base material. However, each of the front film part 20, the back film part 30, and the bottom film part 40 may be, for example, a single-layer structure. The multiple film layers are, for example, made of a common resin material, and it is preferable that the common resin material has a common molecular skeleton of the main chain and the side chain in the chemical structure of the molecule. In this way, the physical properties and quality of the recycled material obtained from the packaging bag with a spout 100 can be improved. This common resin material is preferably an olefin-based, particularly a polyethylene-based resin material. By doing so, since the spout-equipped packaging bag 100 is made of a polyethylene-based resin material, a container recycling system for polyethylene-based resin materials can be established, and the physical properties and quality of the recycled material can be further improved. This polyethylene-based resin material is preferably at least one selected from the group consisting of high density polyethylene (HDPE), medium density polyethylene (MDPE), low density polyethylene (LDPE), linear low density polyethylene (LLDPE), very low density polyethylene (ULDPE), and ethylene-vinyl alcohol copolymer (EVOH).

[0024] In this embodiment, the peripheral portions of the surface film portion 20, the back film portion 30 and the bottom film portion 40 are laminated and joined to each other to form a peripheral seal portion 50, thereby forming a packaging bag 100 with a spout in a bag shape. The peripheral seal portion 50 includes, for example, an upper edge seal portion 51 that joins the upper edge of the surface film portion 20 and the upper edge of the back film portion 30, side edge seal portions 53a, 53b that join the side edges of the surface film portion 20 and the side edges of the back film portion 30, a first bottom gusset seal portion 52a that joins the lower edge of the surface film portion 20 and the front half of the bottom film portion 40, and a second bottom gusset seal portion (not shown) that joins the lower edge of the back film portion 30 and the back half of the bottom film portion 40. The upper edge seal portion 51 extends in the width direction along the upper edge of the body portion 11 (including the area where the first cutout portion 62 is formed). The first bottom gusset seal portion 52a extends along the lower edge of the front surface portion 11a and the front half of the peripheral edge of the bottom gusset 13, and the second bottom gusset seal portion extends along the lower edge of the back surface portion 11b and the back half of the peripheral edge of the bottom gusset 13. The side edge seal portion 53a extends, for example, vertically along the left side edge of the body portion 11 (including the area where the second cutout shape portion 64 is formed), and the side edge seal portion 53b extends, for example, vertically along the right side edge of the body portion 11. The upper end of the side edge seal portion 53 a is connected to the left end of the upper edge seal portion 51 , and the upper end of the side edge seal portion 53 b is connected to the right end of the upper edge seal portion 51 . The lower end of the side edge seal portion 53a is connected to the left end portions of the first bottom gusset seal portion 52a and the second bottom gusset seal portion, and the lower end of the side edge seal portion 53b is connected to the right end portions of the first bottom gusset seal portion 52a and the second bottom gusset seal portion.

[0025] Examples of the method for forming the peripheral seal portion 50 include heat sealing, ultrasonic sealing, and bonding with an adhesive. In FIG. 3, the region where the peripheral seal portion 50 is formed is indicated by hatching.

[0026] Furthermore, the left edge of the front half of the bottom film part 40 and the lower end of the left edge of the front film part 20 are joined together to form a front lower sheet piece 12a, and the left edge of the rear half of the bottom film part 40 and the lower end of the left edge of the back film part 30 are joined together to form a rear lower sheet piece (not shown).The front lower sheet piece 12a and the rear lower sheet piece are joined together to form a continuous skirt part 16a (see FIG. 1). Similarly, the right edge of the front half of the bottom film part 40 and the lower end of the right edge of the front film part 20 are joined together to form the front lower sheet piece 12b, and the right edge of the rear half of the bottom film part 40 and the lower end of the right edge of the back film part 30 are joined together to form the rear lower sheet piece (not shown).The front lower sheet piece 12b and the rear lower sheet piece are joined together to form a continuous skirt part 16b. The configuration of the skirt portions 16a, 16b, etc. allows the spout-equipped packaging bag 100 to stand on its own when the contents are contained in at least the containing area 15 and the bag is placed on a placement surface with the bottom gusset 13 facing down. In other words, the bag has the rigidity to stand on its own when the contents are contained in at least the containing area 15 and the bottom gusset 13 facing down.

[0027] 2, in this embodiment, embossments 80a, 80b are formed at the same locations facing each other on the front and back sides of the front film part 20 and the back film part 30. The embossment 80a of the front film part 20 and the embossment 80b of the back film part 30 are formed to protrude in opposite directions. Note that "embosses 80a, 80b are formed at the same positions facing each other on the front and back sides" means that at least a portion of the embossments 80a, 80b overlaps with each other in the front-back direction. This allows the embossing 80a of the front film portion 20 and the embossing 80b of the back film portion 30 to face each other, and a sufficient gap 85 to be formed between these embossings 80a, 80b, thereby enabling the openings 17a, 17b of the main body portion 10 to expand more sufficiently (for example, in the direction of arrow A shown in Figure 2). It should be noted that the present invention is not limited to this example, and the embossing 80 may be selectively provided on either the front film portion 20 or the back film portion 30. In this case, too, the embossing 80 can prevent the film portions (in this embodiment, the front film portion 20 and the back film portion 30) from coming into close contact with each other, thereby ensuring sufficient expansion of the openings 17a, 17b. In addition, the positional relationship between the embossments 80a and 80b here is the positional relationship when the packaging bag 100 with a spout is viewed in the direction perpendicular to the surface of the surface film portion 20 (or the back film portion 30) before the contents are placed inside or after the contents have been discharged and the packaging bag 100 with a spout is flattened so that the inner surfaces of the surface film portion 20 and the back film portion 30 are in surface contact with each other. In this embodiment, the embossment 80a of the front film part 20 and the embossment 80b of the back film part 30 are set to have the same shape and dimensions. When the front film part 20 and the back film part 30 are viewed in the direction perpendicular to their surfaces, the outline of the embossment 80a and the outline of the embossment 80b coincide with each other (overlap). However, the present invention is not limited to this example, and the embossment 80a of the front film part 20 and the embossment 80b of the back film part 30 may be set to different shapes and dimensions. In this case as well, it is preferable that at least a portion of the embossments 80a, 80b overlap when the packaging bag 100 with a spout is viewed in the direction perpendicular to the surface of the front film part 20 (or the back film part 30).

[0028] In this embodiment, the main body opening starting point 71 is formed at only one location on the peripheral seal portion 50. As a result, even with the main body opening starting point 71 provided, the overall structural strength of the peripheral seal portion 50, and therefore the structural strength of the packaging bag 100 with a spout, can be sufficiently ensured. However, in the present invention, the main body opening starting point 71 may be formed at a plurality of locations in the peripheral seal portion 50, for example.

[0029] Furthermore, for example, a plurality of embossments 80 are formed along an extension line 201 of the main body opening starting point portion 71 . This allows the openings 17a, 17b of the main body 10 to be formed to include a plurality of embossments 80 (embossed lines). This more reliably prevents the film parts (front film part 20 and back film part 30) from coming into complete contact with each other at and near the openings 17a, 17b, so that the extent to which the openings 17a, 17b spread can be more sufficiently ensured. In this regard, "multiple embossings 80 are formed along the extension line 201 of the main body opening starting point 71" means that at least a portion of the multiple embossings 80 is arranged on the extension line 201 of the main body opening starting point 71, and preferably each of the multiple embossings 80 intersects with the extension line 201.

[0030] 1 and 2, the multiple embossments 80 are formed to have, for example, the same shape and the same dimensions as one another. As an example, the front shape of each embossment 80 is formed to be a vertically long rectangular shape. This allows the rift (openings 17a, 17b (see FIG. 5)) formed in the main body 10 to be formed starting from the main body opening starting point 71 and inclined in a direction gradually moving away from the extension line 201 to be formed including the embossment 80. In the present invention, the front shape of the embossment 80 is not limited to this example, and can be set as appropriate. More specifically, for example, the embossment 80 located farther from the main body opening starting point 71 among the plurality of embossments 80 may be configured so that its dimension in the direction perpendicular to the extension direction of the extension line 201 (vertical direction) is larger. By doing so, even if the crack (openings 17a, 17b) formed in the main body portion 10 is formed starting from the main body opening starting point 71 and inclined in the direction gradually moving away from the extension line 201, the crack can be formed including the embossment 80 located far from the main body opening starting point 71.

[0031] In this embodiment, each embossment 80 is formed by embossing, which locally expands a portion of each of the front film part 20 and the back film part 30 outward. The cross-sectional shape (shape of the embossed line) of each embossment 80 along the extension line 201 is, for example, formed into a substantially rectangular shape that is convex outward. More specifically, in the cross section along the extension line 201, the embossment 80a of the front film part 20 bulges convexly toward the front, and the embossment 80b of the back film part 30 bulges convexly toward the rear. Each of the plurality of embossments 80 is, for example, arranged in a straight line along an extension line 201. The extension line 201 is, for example, arranged at a position that divides each embossment 80 into two equal parts, top and bottom. In addition, when viewed from the front, the entire outline of each of the multiple embossments 80 is contained between the dotted lines 202, 203, which form a vertex angle of 60° with the main body opening starting point 71 as the vertex and the extension line 201 of the main body opening starting point 71 as the bisector. Moreover, each of the multiple embossments 80a is formed, for example, in a region of the front film part 20 that is surrounded by the peripheral seal part 50, that is, a region where the front film part 20 and the back film part 30 are not joined to each other. As an example, each of the multiple embossments 80a is disposed between the side edge seal part 53a and the side edge seal part 53b. Similarly, each of the multiple embossments 80b is formed in an area surrounded by the peripheral seal portion 50 in the back film portion 30, i.e., an area where the front film portion 20 and the back film portion 30 are not joined to each other. As an example, each of the multiple embossments 80b is disposed between the side edge seal portion 53a and the side edge seal portion 53b. The method for forming the embossment 80 is not particularly limited, but for example, it can be formed by using a metal mold (not shown) on which an embossing pattern is formed, and drawing a vacuum between the heated film part (front film part 20 and back film part 30) and the metal mold. However, in the present invention, the method for forming the embossment 80 is not limited to this example. In FIG. 3, the formation area of ​​the embossment 80 is indicated by a two-dot chain line. In the case of this embodiment, as an example, the embossment 80 is formed after the spout-equipped packaging bag 100 is shaped into a bag shape by forming the peripheral seal portion 50. However, in the present invention, the embossment 80 may be formed before the peripheral seal portion 50 is formed.

[0032] Furthermore, for example, a pouring opening starting point portion 76 for opening the pouring outlet portion 60 is formed in the peripheral seal portion 50. The intended opening portion 65 of the pouring outlet portion 60 described above opens with the pouring opening starting point portion 76 as a starting point. The intended opening portion 65 is positioned, for example, to avoid the area of ​​a vertex angle of 60° (the angle formed by the dotted lines 202 and 203 shown in Figure 1) with the main body opening starting point 71 as the vertex and the extension line of the main body opening starting point 71 as the bisector. As a result, even if a crack (openings 17a, 17b) formed in the main body portion 10 is formed starting from the main body opening starting point 71 and inclined in a direction gradually moving away from the extension line 201, the crack can be prevented from merging with the intended opening portion 65 of the spout portion 60, thereby preventing the spout portion 60 from being separated from the main body portion 10. Here, the above-mentioned apex angle of 60° can be the angle when the body portion 11 is viewed from the front in a state before the main body portion 10 is opened and in a state in which the inner surfaces of the front film portion 20 and the back film portion 30 are flat so as to be in surface contact with each other.

[0033] 1, the pouring opening starting point 76 is formed, for example, at one corner on the upper end side of the body portion 11. More specifically, the pouring opening starting point 76 is formed, for example, at a part of the periphery of the first cutout shape portion 62. An extension line of the pouring opening starting point 76 extends, for example, in a direction crossing the pouring flow path 68, and this extension line is the intended opening portion 65.

[0034] The distance L1 (see FIG. 4) from the main body opening starting point 71 to the tip of the spout portion 60 is preferably 50 mm or more and 100 mm or less. By doing this, the main body opening starting point 71 is positioned relatively close to the pouring outlet 60, so that the user can easily grasp the position of the main body opening starting point 71 without relying on vision, for example, by touching the pouring outlet 60. Here, the distance L1 from the main body opening starting point 71 to the tip of the spout portion 60 can be the dimension when the body portion 11 is viewed from the front in a state before the spout opening starting point 76 is opened and in a state in which the packaging bag with spout 100 is flattened so that the inner surfaces of the front film portion 20 and the back film portion 30 are in surface contact with each other.

[0035] In addition, in this embodiment, the portion of the peripheral seal portion 50 that includes the main body opening starting point 71 includes an inward protruding portion 57 that locally protrudes inwardly. In this case, the inside refers to the center side of the main body 10 when the body 11 is viewed from the front and the packaging bag 100 with a spout is flattened so that the inner surfaces of the front film portion 20 and the back film portion 30 are in surface contact with each other. This allows the tear (openings 17a, 17b) formed when tearing the main body part 10 along the extension line 201 starting from the main body opening starting point 71 to reach the storage area 15 at a position avoiding the peripheral part of the main body part 10 facing inward. Therefore, for example, it is possible to prevent the contents remaining between the respective peripheral parts of the front film part 20 and the back film part 30 from adhering to the user's fingers or the like through the tear.

[0036] It is preferable that the dimension (dimension L3 shown in Figure 4) of the portion of the peripheral seal portion 50 including the main body opening starting point 71 (in this embodiment, the side edge seal portion 53a and the inward protrusion portion 57) in the extension direction of the main body opening starting point 71 is 15 mm or more and 60 mm or less. On the other hand, the width dimension (L2 shown in FIG. 4) of the inwardly extending portion 57 perpendicular to the extending direction of the main body opening starting point portion 71 is preferably 18 mm or more and 70 mm or less. This ensures that the peripheral seal portion 50 has a dimension equivalent to the length from the first joint to the second joint of an average adult male's index finger in the opening direction of the main body portion 10 (extension direction of the main body opening starting point 71). Also, in the direction perpendicular to the opening direction of the main body portion 10 (extension direction of the main body opening starting point 71), the inward protruding portion 57 has a width equivalent to the thickness (width) of an average adult male's thumb. Therefore, when the vicinity of the main body opening starting point 71 in the main body portion 10 is pinched with the index finger and thumb as described below, it is possible to prevent the contents from sticking to these fingers. Here, the width dimensions L2 and L3 can be the dimensions when the body portion 11 is viewed from the front in a state before the main body portion 10 is opened and in a state in which the packaging bag 100 with a spout is flattened so that the inner surfaces of the front film portion 20 and the back film portion 30 are in surface contact with each other.

[0037] Furthermore, in this embodiment, the portions of the front film portion 20 and the back film portion 30 that constitute the main body portion 10 include a printed layer, and at least one of the front film portion 20 and the back film portion 30 has a printless portion (for example, area B shown in Figure 1) where a printed layer (not shown) is not formed along the extension line 201 of the main body opening starting point portion 71. This allows the tear (openings 17a, 17b) to be formed more smoothly along extension line 201 when main body portion 10 is torn starting from main body opening starting point 71.

[0038] In the case of this embodiment, as an example, each of the front film part 20 and the back film part 30 includes a printed layer, and both the front film part 20 and the back film part 30 have a printless part. As shown in FIG. 1, the printless portion (area B) of the surface film portion 20 is formed, for example, in a straight line from the tip of the main body opening starting point portion 71 to the separation suppression portion 55 in a front view. Similarly, in rear view, the printless portion (not shown) of the rear film portion 30 is formed, for example, from the tip of the main body opening starting point portion 71 to the separation prevention portion 55. However, the present invention is not limited to this example, and either the front film portion 20 or the back film portion 30 may selectively have a printless portion, and even in this case, a crack (opening 17a, 17b) can be smoothly formed along the extension line 201 in the film portion having the printless portion.

[0039] The printed layer can be formed by, for example, offset printing, screen printing, gravure printing, flexographic printing, etc., and may be a medium printed layer that is a colorless printed layer and functions as a protective layer. When the printed layer is a medium printed layer, it is preferable that the printed layer is formed on the outer surface side of the film part.

[0040] In this embodiment, the main body opening starting point 71 is formed in the peripheral seal portion 50 on one side edge of the main body portion 10, and the separation prevention portion 55 is the peripheral seal portion 50 on the other side edge of the main body portion 10. According to this configuration, while openings 17a, 17b are formed so as to traverse the width direction from one side edge to the other side edge of main body 10, it is possible to maintain a state in which one side portion 18 and the other side portion 19 are connected to each other at the other side edge (separation suppressing portion 55). In other words, it is possible to prevent other side portion 19 from being completely separated from one side portion 18 to become a separated piece while ensuring a sufficient opening width of openings 17a, 17b.

[0041] 1, main body opening starting point 71 is formed, for example, in a region of side edge seal portion 53a below pouring opening starting point 76 and above the middle (middle in the up-down direction) of side edge seal portion 53a. The portion of side edge seal portion 53a corresponding to main body opening starting point 71 forms inward protruding portion 57 that locally protrudes inward. The main body opening starting point 71 is, for example, a notch recessed from the left edge of the body 11 toward the right. When viewed from the front, the main body opening starting point 71 is formed, for example, in a substantially triangular shape (a V-shape laid down on its side) tapering toward the tip side (to the right). However, in the present invention, the shape of the main body opening starting point 71 is not limited to this example, and may be, for example, a straight line extending in the width direction, a semicircular shape, a slit shape, or the like. The extension line 201 of the main body opening starting point 71 extends in the width direction as shown in Fig. 1. That is, in this embodiment, the opening direction of the main body 10 is the direction from the side edge seal portion 53a to the side edge seal portion 53b in the width direction (the direction of the arrow D shown in Fig. 1). Inward protrusion 57 is formed in a generally rectangular shape, protruding rightward from the left edge of body 11, for example, in front view. Main body opening starting point 71 is located inside the outline of inward protrusion 57 in front view. On the other hand, separation suppression portion 55 is, for example, side edge seal portion 53b. More specifically, in side edge seal portion 53b, a portion included in an area (area between two-dot chain lines 202, 203) having a vertex angle of 60° with main body opening starting point portion 71 as the apex and an extension line 201 of main body opening starting point portion 71 as the bisector constitutes separation suppression portion 55. In side edge seal portion 53b, the width dimension of at least the portion constituting separation suppression portion 55 is approximately constant regardless of the position in the up-down direction. In addition, in the extending direction of the extension line 201 (width direction), the plurality of embossments 80 are disposed, for example, between the main body opening starting point 71 and the separation suppressing portion 55.

[0042] In the present invention, the arrangement of the main body opening starting point 71 is not limited to the above example. For example, the main body opening starting point 71 may be arranged on the side edge (side edge seal portion 53b) opposite to the spout portion 60 side in the extension direction of the extension line 201. The main body opening starting point 71 may be formed on the upper edge seal portion 51 as described later, or may be formed on the first bottom gusset seal portion 52a and the second bottom gusset seal portion. In either case, the distance L1 (see FIG. 4) from the main body opening starting point 71 to the tip of the spout portion 60 is preferably 50 mm or more and 100 mm or less. In addition, the intended opening portion 65 is preferably arranged, for example, avoiding an area of ​​an apex angle of 60° with the main body opening starting point 71 as the apex and the extension line of the main body opening starting point 71 as the bisector.

[0043] As described above, in the spout-equipped packaging bag 100 according to this embodiment, after the contents have been used up, the main body 10 is opened and the inside of the main body 10 is washed with washing water. This will be described in detail below.

[0044] First, a portion including the main body opening starting point 71 in the peripheral seal portion 50 (for example, in the case of this embodiment, the inward protruding portion 57 and a part of the side edge seal portion 53a) is pinched with the fingers. At this time, for example, the vicinity of the main body opening starting point 71 is pinched from the front and back of the main body portion 10 (the front film portion 20 and the back film portion 30) with the index finger and thumb. As described above, the portion of the peripheral seal portion 50 including the main body opening starting point 71 has a dimension equivalent to the length from the first joint to the second joint of an average adult male's index finger and a width equivalent to the thickness (width) of an average adult male's thumb. This prevents the contents from sticking to the finger.

[0045] Next, while keeping the portion of the peripheral seal portion 50 including the main body opening starting point 71 pinched, the main body portion 10 is torn along the extension line 201 starting from the main body opening starting point 71 . More specifically, the fingers holding the main body 10 are moved in the extension direction (width direction) of the extension line 201 from the main body opening starting point 71 side (side edge seal portion 53a side) to the separation suppression portion 55 side (side edge seal portion 53b), thereby forming openings 17a, 17b (cracks) in the main body 10 (see FIG. 5). At this time, as described above, the openings 17a, 17b terminate in the vicinity of the separation suppression portion 55, so that the portion 18 on one side and the portion 19 on the other side of the main body 10 can be well maintained in a state in which they are connected to each other via the separation suppression portion 55, with the openings 17a, 17b as a reference. Furthermore, as described above, in side edge seal portion 53b, the portion included in the region of 60° apex angle (region between two-dot chain lines 202, 203) with main body opening starting point 71 as its apex and extension line 201 of main body opening starting point 71 as its bisector constitutes separation suppression portion 55. For this reason, even if a crack (openings 17a, 17b) formed in main body 10 is formed starting from main body opening starting point 71 and inclined in a direction gradually moving away from extension line 201, the crack can be made to terminate in separation suppression portion 55 (side edge seal portion 53b).

[0046] As shown in Fig. 5, the openings 17a, 17b thus formed are formed so as to traverse the main body 10, and have a sufficient opening width. Furthermore, since the openings 17a, 17b are formed including the embossments 80 (embossed lines), the extent to which the openings 17a, 17b spread can be sufficiently ensured. It is preferable that the openings 17a, 17b are formed so as to traverse all the embossments 80. In other words, it is preferable that the openings 17a, 17b are formed so as to include all the embossments 80. According to this configuration, cleaning water can be smoothly injected into the inside of the main body 10 through the openings 17a and 17b. More specifically, cleaning water is injected into one side portion 18 of main body 10 through opening 17a, and the contents remaining on the inner surface of one side portion 18 are rinsed off. Similarly, cleaning water is injected into the other side portion 19 of main body 10 through opening 17b, and the contents remaining on the inner surface of other side portion 19 are rinsed off. This allows each film portion (front film portion 20, back film portion 30, and bottom film portion 40) constituting packaging bag 100 with a spout to be efficiently recycled horizontally.

[0047] As described above, in this embodiment, the embossment 80a of the front film portion 20 and the embossment 80b of the back film portion 30 face each other, and a sufficient gap 85 is formed between these embossments 80a, 80b. The openings 17a, 17b are formed across the embossments 80a, 80b, so that the openings 17a, 17b include a wide portion 86 that is wider than the other portions. As a result, when washing water is poured, the water pressure of the washing water acts favorably on the wide portion 86 and thus on the openings 17a, 17b, so that the openings 17a, 17b can be further enlarged. Furthermore, when the embossment 80 is formed by the above-mentioned method of vacuum drawing using the mold, the area in the front film part 20 and the back film part 30 where the embossment 80 is formed is in a state of being pulled convexly outward, so that a stress (tension) in a direction that causes the right edge and the left edge of the main body part 10 to approach each other is applied around the embossment 80. Therefore, when the main body part 10 is opened, the action of the stress (tension) previously applied to the front film part 20 and the back film part 30 causes the right edge and the left edge of the main body part 10 to approach each other, so that the openings 17a, 17b can be smoothly opened, for example, in a substantially tonsil-like shape.

[0048] <Modification 1 of the First Embodiment> Next, a first modified example of the first embodiment will be described with reference to FIG. The packaging bag with a spout 100 of this embodiment differs from the packaging bag with a spout 100 of the first embodiment described above in the points described below, but in other respects is configured in the same way as the packaging bag with a spout 100 of the first embodiment described above.

[0049] In the case of this modified example, each of the plurality of embossments 80 is formed by embossing a portion of the front film part 20 and the back film part 30, respectively, to locally create an outwardly convex crease. Even with this configuration, the embossments 80 can ensure that the openings 17a, 17b of the main body 10 are expanded more sufficiently.

[0050] More specifically, as shown in FIG. 6, the cross-sectional shape of each of the plurality of embossments 80 along the extension line 201 is formed, for example, into a substantially outwardly protruding triangular shape (V-shape).

[0051] <Modification 2 of the First Embodiment> Next, a second modified example of the first embodiment will be described with reference to FIG. The packaging bag with a spout 100 of this embodiment differs from the packaging bag with a spout 100 of the first embodiment described above in the points described below, but in other respects is configured in the same way as the packaging bag with a spout 100 of the first embodiment described above.

[0052] As shown in Figure 7, in this modified example, the main body opening starting point 71 is formed in the peripheral seal portion 50 at the upper edge of the main body portion 10, and the separation prevention portion 55 is the peripheral seal portion 50 at the lower edge of the main body portion 10, which differs from the packaging bag with spout 100 in the first embodiment described above. Even with this configuration, it is possible to ensure a sufficient opening width for openings 17a, 17b, while preventing portion 19 on the other side from being completely separated from portion 18 on one side to form a separated piece.

[0053] More specifically, in the case of this modified example, main body opening starting point 71 is formed, for example, in the middle part of upper edge seal portion 51. And, the part of upper edge seal portion 51 corresponding to main body opening starting point 71 constitutes inward protruding portion 57 that locally protrudes inwardly. The main body opening starting point 71 is, for example, a notch recessed downward from the upper edge of the trunk 11. When viewed from the front, the main body opening starting point 71 is formed, for example, in a substantially triangular shape (a V-shape laid down on its side) tapering toward the tip side (downward). However, in the present invention, the shape of the main body opening starting point 71 is not limited to this example, and may be, for example, a straight line extending in the width direction, a semicircular shape, a slit shape, or the like. 7, the extension line 201 of the main body opening starting point 71 extends in the up-down direction (vertical width direction). That is, in this modified example, the opening direction of the main body 10 is the direction from the upper edge seal portion 51 side toward the first bottom gusset seal portion 52a and the second bottom gusset seal portion side in the up-down direction (the direction of arrow D shown in FIG. 7). Inward protrusion 57 is formed in a generally rectangular shape and protrudes downward from the upper edge of body 11 in front view. Main body opening starting point 71 is located inside the outline of inward protrusion 57 in front view. On the other hand, the separation suppression portion 55 is, for example, the first bottom gusset seal portion 52a and the second bottom gusset seal portion. More specifically, in the first bottom gusset seal portion 52a and the second bottom gusset seal portion, the portion included in the area of ​​the apex angle of 60° (area between the two-dot chain lines 202, 203) with the main body opening starting point 71 as the apex and the extension line 201 of the main body opening starting point 71 as the bisector constitutes the separation suppression portion 55. In addition, in the extending direction of the extension line 201 (vertical width direction), the plurality of embossments 80 are disposed, for example, between the main body opening starting point portion 71 and the separation suppressing portion 55. In this modified example, each embossment 80 is also formed in a generally rectangular shape that is elongated in one direction when viewed from the front. However, in this modified example, each embossment 80 is elongated in the width direction.

[0054] Also in this modified example, similarly to the first embodiment, the distance L1 (see FIG. 7) from the main body opening starting point 71 to the tip of the spout portion 60 is preferably 50 mm or more and 100 mm or less. In this way, the user can easily ascertain the position of the spout 60 by, for example, feeling the position of the main body opening starting point 71 without relying on vision.

[0055] <Modification 3 of the First Embodiment> Next, a third modified example of the first embodiment will be described with reference to FIG. The packaging bag with a spout 100 of this embodiment differs from the packaging bag with a spout 100 of the first embodiment described above in the points described below, but in other respects is configured in the same way as the packaging bag with a spout 100 of the first embodiment described above.

[0056] Of the embossments 80, the embossment 80 located closest to the main body opening starting point 71 exists over the entire angular range of a vertex angle of 60° (the angular range formed by the dotted lines 202, 203) with the main body opening starting point 71 as its apex and the extension line 201 of the main body opening starting point 71 as its bisector. With this configuration, even if the crack (openings 17a, 17b) formed in the main body portion 10 is formed starting from the main body opening starting point 71 and inclined in a direction gradually moving away from the extension line 201, the crack (openings 17a, 17b) can be formed to include the embossment 80 that is located closest to the main body opening starting point 71 among the embossments 80. More specifically, the embossment 80 located closest to the main body opening starting point 71 extends over an angle range of 60° (the angle range formed by the dotted lines 202, 203) with the main body opening starting point 71 as its apex and the extension line 201 of the main body opening starting point 71 as its bisector.

[0057] More specifically, in the present embodiment, as in the first embodiment, the main body opening starting point 71 is formed in the side edge seal portion 53a. Among the multiple embossments 80 aligned in the width direction, the leftmost embossment 80 exists over the entire angular range of an apex angle of 60° with the main body opening starting point 71 as the apex and an extension line 201 of the main body opening starting point 71 as the bisector (the angular range formed by the two-dot chain lines 202, 203). Moreover, each of the embossments 80 is set to have the same shape and the same dimensions as the embossments 80 in the first embodiment. The upper left corner of the outline of the leftmost embossment 80 contacts the two-dot chain line 202, and the lower left corner of the outline of the embossment 80 contacts the two-dot chain line 203. More specifically, the apex of the upper left corner of the outline of the leftmost embossment 80 is outside the angle range formed by the two-dot chain lines 202 and 203, and the apex of the lower left corner of the outline of the embossment 80 is also outside the angle range formed by the two-dot chain lines 202 and 203.

[0058] Second Embodiment Next, a second embodiment will be described with reference to FIG. The packaging bag with a spout 100 of this embodiment differs from the packaging bag with a spout 100 of the first embodiment described above in the points described below, but in other respects is configured in the same way as the packaging bag with a spout 100 of the first embodiment described above.

[0059] In the embossment 80, a portion located on one side of the extension line 201 of the main body opening starting point 71 (hereinafter, one side portion 81) narrows towards one side. According to this configuration, when the main body 10 is opened, the one-side portion 18 of the main body 10 includes a portion (one-side portion 81) that narrows toward one side of the embossment 80. This allows the water pressure of the cleaning water to act more effectively on the opening 17a when cleaning water is poured into the one-side portion 18 of the main body 10 through the opening 17a, so that the opening 17a can be expanded even more widely.

[0060] 9, the width dimension of the lower part of one side portion 81 is approximately constant regardless of the position in the up-down direction, for example. On the other hand, the width dimension of the upper part of one side portion 81 gradually increases toward the top. Moreover, in the embossment 80, the width dimension of the portion located on the other side with respect to the extension line of the main body opening starting point 71 (hereinafter, the other side portion 83) is substantially constant regardless of the position in the vertical direction. The width dimension of the other side portion 83 is set to be substantially equal to the maximum width dimension of the upper part of the one side portion 81, for example. In this embodiment, the upper left corner of the outline of the leftmost embossment 80 is in contact with the two-dot chain line 202, and the lower end of the outline of the embossment 80 is in contact with the two-dot chain line 203. More specifically, the apex of the upper left corner of the outline of the leftmost embossment 80 is outside the angle range formed by the two-dot chain lines 202 and 203, and the lower left corner of the outline of the embossment 80 is also outside the angle range formed by the two-dot chain lines 202 and 203.

[0061] Third Embodiment Next, a third embodiment will be described with reference to FIG. The packaging bag with a spout 100 of this embodiment differs from the packaging bag with a spout 100 of the first and second embodiments described above in the points described below, but in other respects is configured in the same way as the packaging bag with a spout 100 of the first and second embodiments described above.

[0062] As shown in Figure 10, in this embodiment, in the embossment 80, a portion (one-side portion 81) located on one side of the extension line 201 of the main body opening starting point 71 narrows toward one side, and a portion (other-side portion 83) located on the other side of the extension line 201 also narrows toward the other side. According to this configuration, when the main body 10 is opened, the one-side portion 18 of the main body 10 includes a portion (one-side portion 81) narrowed toward one side of the embossment 80, while the other-side portion 19 of the main body 10 includes a portion (other-side portion 83) narrowed toward the other side of the embossment 80. This allows the water pressure of the washing water to act more effectively on the opening 17a when washing water is poured into the one-side portion 18 of the main body 10 through the opening 17a, so that the opening 17a can be expanded even more. Similarly, when washing water is poured into the other portion 19 of the main body 10 through the opening 17b, the water pressure of the washing water can be acted more effectively on the opening 17b, so that the opening 17b can be expanded even more.

[0063] More specifically, in the case of this embodiment, the embossment 80 has one side portion 81 and the other side portion 83 formed in a vertically symmetrical shape with respect to the extension line 201 . The width dimension of the one side portion 81 is gradually reduced downward, for example, and the width dimension of the other side portion 83 is gradually reduced upward, for example. When viewed from the front, the embossment 80 is formed, for example, in a substantially diamond shape, with one of two diagonals of the diamond extending in the width direction and the other diagonal extending in the up-down direction. In this embodiment, the upper end of the outline of the leftmost embossment 80 is in contact with the two-dot chain line 202, and the lower end of the outline of the embossment 80 is in contact with the two-dot chain line 203. The upper end of the outline of the leftmost embossment 80 is located on the two-dot chain line 202, and the lower end of the outline of the embossment 80 is located on the two-dot chain line 203.

[0064] <Modification of the third embodiment> Next, a modification of the third embodiment will be described with reference to FIG. The packaging bag with a spout 100 of this embodiment differs from the packaging bag with a spout 100 of the third embodiment described above in the respects described below, but in other respects is configured in the same manner as the packaging bag with a spout 100 of the third embodiment described above.

[0065] In this modified example, as in the third embodiment, in the embossment 80, a portion (one side portion 81) located on one side of the extension line 201 of the main body opening starting point 71 narrows toward one side, and a portion (other side portion 83) located on the other side of the extension line 201 also narrows toward the other side. However, in this modified example, the width dimension of one side portion 81 decreases in two stages downward, and similarly, the width dimension of the other side portion 83 decreases in two stages upward. When viewed from the front, the embossment 80 is formed in a generally cross shape in which a straight line extending in the width direction and a straight line extending in the up-down direction are perpendicular to each other, for example. In addition, in the present modified example, the upper left corner of the outline of the leftmost embossment 80 contacts the two-dot chain line 202, and the lower left corner of the outline of the embossment 80 contacts the two-dot chain line 203.

[0066] The present invention is not limited to the above-described embodiment, and includes various modifications and improvements as long as the object of the present invention is achieved. [Explanation of symbols]

[0067] 10 Main body 11 Torso 11a Surface part 11b Back part 12a, 12b Front lower sheet piece 13 Bottom gusset 15 Containment Area 16a, 16b Skirt section 17a, 17b opening 18 One side part 19 Other side part 20 Surface film part 30 Back film section 40 Bottom film section 50 Peripheral seal 51 Upper edge seal 52a First bottom gusset seal 53a, 53b Side edge seal portion 55 Separation suppressor 57 Inward protrusion 60 Spout part 61 Aperture 62 First notch shape portion 64 Second notch shape portion 65 Opening area 66 Opening Tab 67 Opening guide line 68 Output channel 71 Main body opening starting point 76 Spout opening starting point 80, 80a, 80b Embossed 81 One side part 83 Other side part 85 void 86 Wide section 100 Packaging bags with spouts 201 Extension line 202, 203 Double-dashed line

Claims

1. A packaging bag having a surface film portion, a back film portion, and a bottom film portion, and having a peripheral seal portion sealed at the peripheral portion, a main body capable of accommodating contents; A pouring outlet portion for pouring the content from the main body portion; and a main body opening starting point for opening the main body is formed in the peripheral seal portion, A portion of the peripheral seal portion is a separation prevention portion that is arranged on an extension line of the main body opening starting point portion, An outwardly protruding embossment is formed in the area of ​​the main body surrounded by the peripheral seal portion, The opening starting point of the main body of the packaging bag with a spout extends toward the embossment.

2. The spout-equipped packaging bag according to claim 1, wherein the embossments are formed at the same positions on the front and back sides of the front and back film portions.

3. The spout-equipped packaging bag according to claim 1 or 2, wherein the main body opening starting point is formed at only one location on the peripheral seal portion.

4. The spout-equipped packaging bag according to claim 1 or 2, wherein a plurality of the embossments are formed along an extension line of the starting point of the main body opening.

5. The peripheral seal portion has a pouring opening starting point portion for opening the pouring outlet portion, 3. The packaging bag with a spout according to claim 1, wherein the intended opening portion, which opens starting from the spout opening starting point, is arranged so as to avoid an area of ​​a 60° apex angle, with the main body opening starting point as its vertex and an extension line of the main body opening starting point as its bisector.

6. 3. The packaging bag with a spout according to claim 1, wherein the embossment closest to the starting point of the main body opening is present over the entire angular range of a 60° apex angle, with the starting point of the main body opening as the apex and an extension line of the starting point of the main body opening as the bisector.

7. 3. The spout-equipped packaging bag according to claim 1, wherein a portion of the peripheral seal including the starting point of the main body opening includes an inward protruding portion that locally protrudes inward.

8. 3. A packaging bag with a spout as described in claim 1 or 2, wherein the portions of the surface film portion and the back film portion that constitute the main body portion include a printed layer, and at least one of the surface film portion and the back film portion has a printless portion where the printed layer is not formed along an extension line of the main body opening starting point portion.

9. 3. The spout-equipped packaging bag according to claim 1, wherein the embossed portion on one side of the extension line of the opening start point of the main body is tapered toward the one side.

10. the main body opening origin is formed in the peripheral seal portion at one side edge of the main body portion, The spout-equipped packaging bag according to claim 1 or 2, wherein the separation prevention portion is the peripheral seal portion on the other side edge of the main body portion.

11. the main body opening origin is formed in the peripheral seal portion at the upper edge of the main body, The spout-equipped packaging bag according to claim 1 or 2, wherein the separation prevention portion is the peripheral seal portion at the lower edge of the main body portion.

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