Pouch

Abstract

To provide a pouch having improved operability with one hand.SOLUTION: In a pouch 10, a dispensing part 50 is provided at a position on a first side seal 11 side with respect to a horizontal center of the pouch 10 and on the upper side with respect to a vertical center of the pouch 10. At least one of a front film 20 and a back film 30 is formed with folding processing parts 22a, 32a extending from a lower side to an upper side and projecting to the outside of the pouch. The folding processing parts 22a, 32a are formed only in a second side seal side region 22, 32 of at least one of the front film 20 and the back film 30 among first side seal side regions 21, 31 and second side seal side regions 22, 32 of the front film 20 and the back film 30.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] Conventionally, it has been known to use a pouch having a first side seal and a second side seal formed by heat-welding a front film and a back film, as well as a pouring portion, as a container for holding liquid contents such as liquid detergent (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-079982 A Summary of the Invention [Problem to be solved by the invention]

[0004] With such pouches, it may be necessary to operate the pouch with one hand, for example, when supporting the container to be refilled with one hand while lifting the pouch containing the refill contents with the other hand. However, depending on the size of the pouch, operating it with one hand may be difficult.

[0005] Therefore, the present invention is devised to solve these problems, and has an object to provide a pouch that has a simple structure and improves operability with one hand. [Means for solving the problem]

[0006] The present invention solves the above problem by providing a pouch having a first side seal and a second side seal formed by heat-welding a front film and a back film, and a pouring portion, wherein the pouring portion is located closer to the first side seal than the left-right center of the pouch and above the up-down center of the pouch, the front film and the back film have a first side seal side region closer to the first side seal than the left-right center and a second side seal side region closer to the second side seal than the left-right center, and at least one of the front film and the back film has a convex mountain fold portion extending from the lower side to the upper side on the outside of the pouch, and the mountain fold portion is formed only in the second side seal side region of at least one of the front film and the back film out of the first side seal side region and the second side seal side region of the front film and the back film. In the above pouch, the mountain fold may be formed in the second side seal side region of each of the front film and the back film. In any of the above pouches, the second side seal may have a seal base and a control seal portion that protrudes convexly from the seal base toward the inside in the left-right direction, and the control seal portion may be formed on a left-right side of the mountain fold processing portion. In any of the above pouches, the control seal portion may be formed at a location that is below the liquid level of the liquid contents when the pouch in an unopened state filled with the liquid contents is held with the top of the pouch facing upward. In any of the pouches described above, the control seal portion may be formed in at least two locations vertically spaced apart from each other. In any of the above pouches, the control seal portion may be formed continuously with the second side seal. Effect of the Invention

[0007] The present invention can improve one-handed operability with a simple configuration. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is an explanatory diagram showing a pouch according to one embodiment of the present invention. [Diagram 2] A cross-sectional view of the pouch taken along line II-II in Figure 1. [Diagram 3] FIG. 2 is an explanatory diagram showing an example of a usage mode of the pouch. [Figure 4] FIG. 4 is an explanatory diagram showing the pouch as viewed from the second side seal side. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] A pouch 10 according to one embodiment of the present invention will now be described with reference to the drawings.

[0010] First, as shown in FIG. 1, the pouch 10 is formed into a bag shape by heat welding overlapping front and back films 20 and 30 (and gusset film 40) at predetermined locations, and the liquid contents contained therein, such as a refill liquid detergent, are poured out through a pouring portion 50.

[0011] Specifically, the pouch 10 of this embodiment is configured as a large standing pouch with a capacity of 700 mL, which is constructed by placing a gusset film 40 in a double-folded state between the films 20, 30 at the bottom of the pouch and heat-sealing predetermined locations, and has a first side seal 11 formed by heat-sealing the films 20, 30 at one side of the pouch, a second side seal 12 formed by heat-sealing the films 20, 30 at the opposite side of the pouch, a top seal 13 formed by heat-sealing the films 20, 30 at the top of the pouch, a bottom seal 14 formed by heat-sealing the films 20, 40 and the films 30, 40 at the bottom of the pouch, and an inclined seal 15 formed at the corner between the first side seal 11 and the top seal 13, as shown in FIG. 1.

[0012] The configuration of each part of the pouch 10 will be specifically described below.

[0013] First, as shown in FIG. 1, in this embodiment, the second side seal 12 has a seal base 12a having an inner edge portion and an outer edge portion (outer edge 12c) consisting of a single straight line portion extending linearly along the up-down direction (vertical direction), and a control seal portion 12b.

[0014] As shown in FIG. 1, the control seal portion 12b is a portion that continuously protrudes in a convex shape from the seal base portion 12a toward the inside in the left-right direction, and in this embodiment, it is formed in two places spaced apart in the vertical direction. Each control seal portion 12b is formed at a location below the liquid level of the content liquid (i.e., at a location immersed in the content liquid) when an unopened pouch 10 filled with a predetermined volume of content liquid is held with the top seal 13 facing upward, and it is preferable that at least a portion of each control seal portion 12b is formed so as to be located within the vertical region R shown in Figure 3 described below. Each control seal portion 12b preferably has a protruding dimension in the left-right direction from the seal base portion 12a of 3 mm to 20 mm. In addition, it is preferable that the width in the up-down direction is 1 to 40 mm. If the protruding dimension in the left-right direction exceeds 20 mm, the content volume may be reduced unexpectedly, and there is also a risk of the pouch bending (unintended dent in the film). In addition, if the width in the up-down direction exceeds 40 mm, the content volume may be reduced unexpectedly. The first side seal 11 does not have such a control seal portion 12b, and has inner and outer edge portions consisting of a single straight portion that extends linearly along the up-down direction (vertical direction).

[0015] As shown in FIG. 1, the films 20, 30 each have a first side seal side region 21, 31 located closer to the first side seal 11 than the left-right center (specifically, a virtual line extending vertically through the left-right center position between the leftmost and rightmost portions of the films 20, 30), and a second side seal side region 22, 32 located closer to the second side seal 12 than the left-right center.

[0016] At least one of the films 20, 30 has a mountain fold portion 22a, 32a extending from the lower side toward the upper side, as shown in FIG. 1. In this embodiment, the mountain fold portions 22a, 32a are formed in the second side seal side regions 22, 32 of the films 20, 30, respectively, as shown in FIGS. 1 and 2. As shown in FIGS. 1 and 2, the first side seal side regions 21 and 31 of the films 20 and 30 do not have mountain folds 22a and 32a.

[0017] As shown in FIG. 2, mountain fold portions 22a, 32a are portions where films 20, 30 are folded so as to form a convex shape on the outside of the pouch, and as shown in FIG. 1, they extend linearly while slightly curving (so as to form a convex shape inward in the left-right direction) from near bottom seal 14 on the lower side toward near the corner between second side seal 12 and top seal 13 on the upper side. In addition, as shown in FIG. 1, the mountain fold processing portions 22a, 32a are formed on the left-right sides of each control seal portion 12b, that is, when viewed in the left-right direction, at least a portion (in this embodiment, the entirety) of each control seal portion 12b is formed to overlap with the mountain fold processing portions 22a, 32a.

[0018] As described in detail below, mountain fold portions 22a, 32a are intended to make it easier for the user to grip pouch 10 from the second side seal 12 side. Therefore, as shown in FIG. 3, it is preferable to form mountain fold portions 22a, 32a so as to extend across a vertical region R from a position upwardly away from the lower end of films 20, 30 by 5 to 30% of the vertical dimension of films 20, 30 (the vertical dimension from the lower end to the upper end of films 20, 30) to a position downwardly away from the upper end of films 20, 30 by 5 to 30% of the vertical dimension of films 20, 30. In addition, in the above-mentioned vertical region R, the left-right distance from the mountain folds 22a, 32a to the outer edge (outer periphery) 12c of the second side seal 12 (seal base 12a) is preferably set to 6 to 60 mm, more preferably 35 to 45 mm, taking into consideration the general finger length of a user. If the above-mentioned left-right distance exceeds 60 mm, the amount of compression by the handle increases, which may cause the contents to easily spill out. If it is shorter than 6 mm, it becomes difficult to hold the pouch because the fingers do not easily pass over the center of the pouch, and the effect of the shape is reduced.

[0019] As shown in FIG. 1 , the spout 50 is provided on the first side seal 11 side of the left-right center of the pouch 10 (excluding the spout 50) (i.e., the left-right center of the films 20, 30) (in other words, on the first side seal 11 side of an imaginary line extending in the vertical direction through the left-right center position between the leftmost and rightmost portions of the films 20, 30) and above the up-down center of the pouch 10 (excluding the spout 50) (i.e., the up-down center of the films 20, 30) (in other words, above an imaginary line extending in the horizontal direction through the up-down center position between the uppermost and lowermost portions of the films 20, 30). In this embodiment, the spout 50 is configured as a spout formed separately from the films 20, 30, and is attached by being disposed between the films 20, 30 at the inclined seal 15 and heat-welded to the films 20, 30.

[0020] In the pouch 10 of the present embodiment obtained in this manner, the mountain fold processing portions 22a, 32a are formed only in the second side seal side regions 22, 32 of at least one of the films 20, 30, out of the first side seal side regions 21, 31 and the second side seal side regions 22, 32 of the films 20, 30, thereby improving the operability (gripability) of the pouch 10 with one hand. That is, by forming mountain fold portions 22a, 32a as described above, it is possible to induce a state of pouch 10 in which films 20, 30 bulge outward from mountain fold portions 22a, 32a as their apex at a position closer to second side seal 12 than the center in the left-right direction, as shown in FIG. 2, and the portion of films 20, 30 closer to first side seal 11 than mountain fold portions 22a, 32a is inclined toward the inside in the front-to-back direction. Therefore, as shown in FIG. 3, when a user grasps pouch 10 with one hand from the second side seal 12 side, which is the opposite side where pouring portion 50 is formed, the user's fingers can easily hook onto films 20, 30, improving the operability (gripability) of pouch 10.

[0021] Furthermore, since the control seal portion 12b is formed in the second side seal 12, as shown in FIG. 4, the outer edge (outer edge) 12c of the second side seal 12 can be bent and folded to the front or back side near the formation position of the control seal portion 12b. Therefore, as shown in FIG. 3, when a user grasps the pouch 10 with one hand from the second side seal 12 side, the outer edge 12c of the second side seal 12, which is extended straight in the vertical direction, can be prevented from hitting the palm of the user's hand. As a result, the outer edge 12c of the second side seal 12 hits the user's palm softly, reducing the user's pain. In other words, at a position below the liquid level of the contents, the pressure of the contents will cause the films 20, 30 to try to separate from each other, but near the control seal portion 12b where the films 20, 30 are heat-welded, the films 20, 30 are prevented from separating, so that, as shown in Figure 4, the outer edge 12c of the second side seal 12 bends near the formation position of the control seal portion 12b and the outer edge 12c can be tilted to the front or back side, thereby softening the contact of the outer edge 12c of the second side seal 12 with the palm of the user's hand.

[0022] Furthermore, since the control seal portion 12b is formed in two locations spaced apart in the vertical direction, it is possible to induce the second side seal 12 to be folded to the front or back side from the area near the lower control seal portion 12b to the area near the upper control seal portion 12b, as shown in Figure 4, thereby preventing the user from feeling pain when grasping the pouch 10 from the second side seal 12 side. In order to guide the second side seal 12 to the above-mentioned state, it is preferable to set the vertical separation distance between the upper control seal portion 12b and the lower control seal portion 12b to 10 to 200 mm, and it is even more preferable to set it to 80 to 100 mm.

[0023] Furthermore, since the mountain fold processing portions 22a, 32a are formed on the left-right sides of the control seal portion 12b, the area where a depression C in the film (so-called "waist fold") caused by the formation of the control seal portion 12b is likely to occur is limited, making it possible to satisfactorily secure a printing display area for various printing such as product information, and also to suppress a decrease in the buckling strength of the pouch 10. That is, as described above, at a position below the liquid level of the contents, the pressure of the contents causes the films 20, 30 to try to separate from each other; however, in the vicinity of the control seal portion 12b where the films 20, 30 are heat-sealed, the films 20, 30 are prevented from separating, and as a result, as shown in FIG. 4, a depression C (so-called "folding") in the films 20, 30 in the film thickness direction may occur in the vicinity of the control seal portion 12b, and areas where such depression C in the films 20, 30 is likely to occur are unsuitable for printing various types of product information, etc. Therefore, in the pouch 10 of the present embodiment, by forming mountain fold processing portions 22a, 32a on the left-right inner side of the control seal portion 12b, it is possible to prevent the depression C of the above-mentioned films 20, 30 from spreading (spreading) further inward in the left-right direction than the mountain fold processing portions 22a, 32a, so that the area further inward in the left-right direction than the mountain fold processing portions 22a, 32a can be effectively utilized as a printed display area, and by narrowing the range of the depression C, a decrease in the buckling strength of the pouch 10 can be suppressed.

[0024] Furthermore, by forming the mountain fold processing portions 22a, 32a, the front film 20 and the back film 30 are prevented from coming into close contact with each other near the pouring portion 50, and the pouring path can be prevented from being blocked due to the adhesion between the films 20, 30, thereby maintaining good pouring properties of the content liquid.

[0025] Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various design modifications can be made without departing from the present invention as described in the claims, such as forming pouch 10 by any combination of the respective configurations of the above or following embodiments and modified examples.

[0026] For example, the specific form of each film (films 20, 30, gusset film 40) as the resin film constituting the pouch 10 may be any, such as a synthetic resin film such as polyester, polypropylene, polyamide, etc., or a film formed by laminating a known synthetic resin film such as a coating film or a vapor deposition film that has gas barrier properties or moisture barrier properties onto the synthetic resin film, or by laminating paper or aluminum foil onto the synthetic resin film. In addition, in the above-described embodiment, the pouch 10 has been described as being formed as a so-called standing pouch, but the specific form of the pouch 10 may be any form provided that it has films 20, 30 arranged in a stacked manner. For example, it is not necessary to arrange the gusset film 40 between the films 20, 30 at the bottom of the pouch, and a gusset film may be arranged between the films 20, 30 at the top of the pouch. In addition, in the above-described embodiment, the films 20, 30 are described as being formed separately, but the films 20, 30 may be formed as a single film, in which case the film may be folded back at the top of the pouch or the like. In addition, in the above-described embodiment, the liquid contained in the pouch 10 is described as a liquid detergent refill, but the specific form of the liquid contained may be any, such as shampoo or drinking water other than refill. Furthermore, the pouch 10 may have any capacity or size, but the present invention is particularly suitable for a large-capacity pouch with a capacity of 400 to 1000 mL.

[0027] In addition, in the above-described embodiment, the mountain fold portions 22a, 32a are described as being formed so as to extend continuously from the lower side toward the upper side, but the specific form of the mountain fold portions 22a, 32a is not limited to this, and for example, a plurality of mountain fold portions 22a, 32a may be formed side by side so as to extend intermittently from the lower side toward the upper side. In addition, in the above-described embodiment, the mountain fold portions 22a, 32a are described as extending linearly while being slightly curved, but the specific form of the mountain fold portions 22a, 32a is not limited to this, and for example, the mountain fold portions 22a, 32a may be formed from one or more straight-extending portions or one or more curved-extending portions, or the mountain fold portions 22a, 32a may be formed by any combination of one or more straight-extending portions and one or more curved-extending portions. More specifically, the mountain fold processing portions 22a, 32a may be composed, as a whole, of only inclined portions (straight or curved) that incline toward the outside in the left-right direction as they extend upward, of only straight portions that extend along the up-down direction, or of only a combination of the inclined portions and the straight portions.

[0028] In addition, in the above-described embodiment, it has been described that the mountain fold portions 22a, 32a are formed in the second side seal side regions 22, 32 of the films 20, 30, respectively, but the mountain fold portions 22a, 32a may be formed in only one of the second side seal side region 22 of the front film 20 or the second side seal side region 32 of the back film 30.

[0029] In addition, in the above-described embodiment, the control seal portion 12b is described as being formed continuously with the seal base 12a, but the control seal portion 12b may also be formed independently (at a position separated from) the seal base 12a. In addition, in the above-described embodiment, two control seal portions 12b are formed in the second side seal 12, but the number of control seal portions 12b may be one or three or more, and it is also possible that no control seal portion 12b is formed. In addition, in the above-described embodiment, the seal base 12a is described as a portion having an inner edge portion and an outer edge portion that extend in a straight line, but the specific form of the seal base 12a is not limited to this, and may be any form, such as one having an inner edge portion and an outer edge portion that are gently curved. In addition, in the above-described embodiment, the first side seal 11 is described as having an inner edge portion and an outer edge portion that extend in a straight line, but the specific form of the first side seal 11 is not limited to this, and may be any form, such as one having an inner edge portion and an outer edge portion that are gently curved. In addition, in the above-described embodiment, the inner edge portions and outer edge portions of the side seals 11, 12 are described as extending linearly along the vertical direction, but these inner edge portions and outer edge portions may also extend at an angle relative to the vertical direction.

[0030] In addition, in the above-described embodiment, the pouring portion 50 is described as being provided in the corner (at the inclined seal 15) between the first side seal 11 and the top seal 13, but the specific formation position of the pouring portion 50 is not limited to this, and may be any position closer to the first side seal 11 than the left-right center of the pouch 10 and above the up-down center of the pouch 10. For example, the pouring portion 50 may be provided in a position on the first side seal 11 closer to the top seal (specifically, a position closer to the top seal 13 than the left-right center of the first side seal 11) or a position on the top seal 13 closer to the first side seal 11 (specifically, a position closer to the first side seal 11 than the left-right center of the top seal 13). In the above-described embodiment, the pouring portion 50 has been described as being composed of a spout formed separately from the films 20, 30, but the specific aspect of the pouring portion 50 is not limited to this, and the pouring portion 50 may be formed as a part of the film that constitutes the pouch 10, such as the films 20, 30, and may be configured as a portion that is opened by cutting a part of the film. [Explanation of symbols]

[0031] 10 ··· Pouch 11 First side seal 12 Second side seal 12a Seal base 12b Control seal part 12c Outside edge 13 Top seal 14 Bottom seal 15 Inclined seal 20 ··· Front film 21: First side seal area 22 Second side seal area 22a... Mountain fold processing section 30 ··· Back film 31 First side seal area 32 Second side seal area 32a... Mountain fold processing section 40 ··· Gusset film 50 ··· Pour part

Claims

1. A pouch having a first side seal and a second side seal formed by heat-welding a front film and a back film, and a pouring portion, The pouring portion is provided at a position closer to the first side seal than the left-right center of the pouch and above the up-down center of the pouch, the front film and the back film have a first side seal region on the first side seal side from a center in the left-right direction, and a second side seal region on the second side seal side from a center in the left-right direction, At least one of the front film and the back film has a convex mountain-folded portion extending from the lower side to the upper side on the outer side of the pouch, A pouch characterized in that the mountain fold processing portion is formed only in the second side seal side region of at least one of the front film and the back film, out of the first side seal side region and the second side seal side region of the front film and the back film.

2. 2. The pouch according to claim 1, wherein the mountain fold is formed in the second side seal side area of ​​each of the front film and the back film.

3. The second side seal has a seal base and a control seal portion protruding inward in the left-right direction from the seal base, 2. The pouch according to claim 1, wherein the control seal portion is formed on one side of the mountain fold portion in the left-right direction.

4. The pouch according to claim 3, characterized in that the control seal portion is formed at a location below the liquid level of the liquid contents when the pouch in an unopened state filled with the liquid contents is held with the top of the pouch facing upward.

5. 4. The pouch according to claim 3, wherein the control seal portion is formed in at least two locations spaced apart in the vertical direction.

6. 4. The pouch according to claim 3, wherein the control seal portion is formed contiguous with the second side seal.

Images