JP7505475B2 - Pouch with spout - Google Patents

Description

The present invention relates to a spout-equipped pouch in which a spout is attached to the side gusset film of the pouch body.

Previously, the applicant proposed in Patent Document 1 a spout-equipped pouch as a container for storing liquid contents such as drinking water or liquid detergent, in which a spout is attached sideways to a side gusset film of a pouch body formed by heat-welding multiple resin films.

A commonly known method for attaching a spout to such a spout-equipped pouch is to place the flange of the spout facing the side gusset film and then attach the flange to the side gusset film by means of heat welding or other means.

JP 2020-132177 A

However, in a spout-equipped pouch as disclosed in Patent Document 1, when the pouch is lifted to dispense the liquid contents, the spout can move unexpectedly due to the weight of the liquid contents that enters the spout when dispensing the liquid contents. As a result, it is difficult to determine the orientation of the dispensing tube of the spout, making it difficult to dispense the liquid contents.

Furthermore, with conventional spouted pouches, there is a problem that when the spouted pouch is dropped, the weight of the contents can cause damage to the side gusset film near the outer periphery of the flange, causing the pouch body to break starting from near the outer periphery of the flange. It is presumed that such breakage of the pouch body occurs when the spouted pouch is dropped, and the spout rotates (tilts) relative to the side gusset film, applying a moment load near the outer periphery of the flange, causing the outer periphery of the flange to hit the floor or the like near the outer periphery of the flange with this moment load applied.

The present invention aims to solve these problems by providing a pouch with a spout that has a simple structure, improves the ease of pouring the liquid contents through the spout, and prevents the pouch body from breaking starting near the outer periphery of the flange.

The present invention provides a spout-equipped pouch including a front film, a back film, a side gusset film disposed between the front film and the back film at a side portion of the pouch and heat-sealed to the front film and the back film by a side seal, and a spout attached to the side gusset film, wherein the side gusset film has a front seal region heat-sealed to the front film at the side seal, a back seal region heat-sealed to the back film at the side seal, and a non-seal region which is a region inside the front seal region and the back seal region, and the non-seal region is a region inside the front seal region. The problem is solved by having a front outer edge that is a boundary between the front outer edge and the back outer edge, and a back outer edge that is a boundary with the back seal area, the front outer edge and the back outer edge each having a base edge portion that is spaced apart from each other in the front-to-back direction, and an upper inclined edge portion that extends from the upper end of the base edge to an upper end connecting portion that connects the upper ends of the front outer edge and the back outer edge, at least a portion of the flange of the pouring spout is arranged facing the area between the upper inclined edge portion of the front outer edge and the upper inclined edge portion of the back outer edge, and the upper inclined edge portion is composed of at least two inclined portions having different inclination angles with respect to the up-down direction .

According to the invention of claim 1, at least a portion of the flange of the pouring spout is positioned opposite the area between the upper inclined edge portions of the side gusset film, so that it is possible to narrow the distance between the inner edge of the sealing area (side seal) of the side gusset film and the outer peripheral edge of the flange and restrict the movement of the pouring spout without affecting the self-supporting ability of the pouch body, thereby making it possible to properly determine the orientation of the pouring tube portion of the pouring spout and improve the ease of pouring the content liquid through the pouring spout. In other words, by locating the flange of the pouring spout in the region between the upper inclined edges, which has a narrower width in the front-to-back direction than the region between the base edges, not only can the distance between the inner edge of the sealing region (side seal) of the side gusset film and the outer peripheral edge of the flange be narrowed, but the region between the upper inclined edges is the part that is located at the upper side of the side gusset film when the spout-equipped pouch is placed on a supporting surface, and even if the edge shape is changed in design, it is a part that does not affect the independence of the pouch body, etc., so the edge shape can be freely changed in design to effectively restrict the movement of the pouring spout.
Furthermore, according to the invention of claim 1, the region between the upper inclined edges of the side gusset film is a portion that, when the pouch with a spout is placed on the supporting surface, inclines so as to move toward the inside of the pouch body as it moves upward. Therefore, even if the position of the flange of the pouring spout is recessed inside the pouch body and the pouch with a spout is dropped, it is easy to make it difficult for the side gusset film near the outer peripheral edge of the flange to hit the floor, etc., thereby preventing the pouch body from breaking starting from near the outer peripheral edge of the flange. Also, compared to the case where the pouring spout is attached to the region between the base edges of the side gusset film, the tip position of the pouring tube portion of the pouring spout can be retracted toward the inside of the pouch body.

Furthermore, according to the invention of claim 1 , the upper inclined edge portion is composed of at least two inclined portions having different inclination angles in the vertical direction, and by adjusting the inclination angles of each of these portions to adjust the edge shape of the upper inclined edge portion, it is possible, with a simple configuration, to narrow the distance between the inner edge of the sealing area (side seal) of the side gusset film and the outer peripheral edge of the flange, or the distance between the upper inclined edges (side seals), or to effectively adjust the inclination angle of the flange.
According to the invention of claim 3, the upper inclined edge has a gently sloping portion connecting a portion located above the upper end of the base edge and on the inside in the front-back direction with the upper end of the base edge, and a steeply sloping portion connecting the upper end of the gently sloping portion with the upper end connecting portion, and at least a portion of the flange of the spout is disposed facing the area between the gently sloping portion of the front outer edge and the gently sloping portion of the back outer edge. This makes it possible to prevent the space above the spout attachment position in the content liquid storage section in the pouch body from becoming large in the vertical direction, while narrowing the gap between the inner edge of the seal area (side seal) of the side gusset film and the outer peripheral edge of the flange to effectively restrain the movement of the spout, and narrowing the gap between the upper inclined edges (side seals) in the area of the side gusset film where the spout is attached, to position the spout deeper inside the pouch body.
Furthermore, in the invention according to claim 3, by attaching the spout to a region between the gently sloping portions where the angle of inclination is gentler as it slopes upward so as to move closer to the inside of the pouch body, it is possible to reduce the angle of inclination of the flange with respect to the vertical direction of the pouch body and adjust the extension direction of the pouring tube portion of the pouring spout to face downward, thereby making it possible to increase the volume of the content liquid that can be contained in the pouch body while suppressing so-called leakage of the content liquid (a phenomenon that occurs when the pouring tube portion of the pouring spout is facing diagonally upward after the pouring of the content liquid has been completed, in which the content liquid leaks from the tip of the pouring tube portion and flows down the underside of the outer circumferential surface of the pouring tube portion).
According to the invention of claims 4 and 5, at least one of the front seal area or the back seal area has a control seal part located inside the first virtual line in the front-back direction, and the control seal part has a part located in the area between the lower half of the flange facing area and the front seal area or the back seal area in the front-back direction. This narrows the gap between the inner edge of the seal area (side seal) of the side gusset film and the outer circumferential edge of the flange in the lower half of the flange facing area, and not only can the movement of the spout be more reliably restricted, but the formation of the control seal part makes it possible to adjust the inclination of the flange so that the tip side of the spout tube of the spout faces downward.
According to the invention of claim 6, when the contents liquid storage section of the spouted pouch is in an unopened state and viewed from the front to back, it contains contents liquid equal to or less than the volume of the portion of the contents liquid storage section that is below an imaginary line extending along the extension direction of the lower edge of the inner circumferential surface of the pouring hole of the pouring spout. This makes it possible to prevent the pouring tube section of the pouring spout from facing diagonally upwards when the pouring of the contents liquid is completed, thereby preventing the occurrence of so-called contents leakage, in which the contents liquid leaking from the tip of the pouring tube section runs down the underside of the outer circumferential surface of the pouring tube section when the pouring of the contents liquid is completed.

FIG. 2 is an explanatory diagram showing a state in which a spout-equipped pouch according to an embodiment of the present invention is placed on a placement surface. FIG. 2 is an explanatory diagram showing each film that constitutes the spouted pouch. FIG. FIG. 4 is an explanatory diagram illustrating each part of the side gusset film. FIG. 11 is an explanatory diagram showing a first modified example of a side gusset film. FIG. 11 is an explanatory diagram showing a second modified example of the side gusset film. FIG. 13 is an explanatory diagram showing the appearance of the spouted pouch when the content liquid is poured out.

Below, a spouted pouch 10, which is one embodiment of the present invention, is described with reference to the drawings.

The spouted pouch 10 contains liquid contents such as drinking water or liquid detergent, and is configured to pour out the liquid contents from a pouring spout 80 attached to the side of the pouch body 20, as shown in Figures 1 and 7.

As shown in FIG. 1 , the spout-equipped pouch 10 has a pouch body 20 formed into a bag shape by heat-welding flexible films 30, 40, 50, and 60 to form a bag-making seal portion, an inner film 70 disposed within the pouch body 20, and a pouring spout 80 attached to the pouch body 20.

The pouch body 20 is configured as a so-called horizontal gusset type pouch with gussets formed on both sides, and as shown in Figures 1 and 2, has a front film 30 and a back film 40 arranged opposite each other in the front-back direction X with the liquid content storage section 21 in between, a side gusset film 50 arranged between the front film 30 and the back film 40 on one side of the pouch and heat-sealed to the front film 30 and the back film 40 by a first side seal 22, and a second gusset film 60 arranged opposite the side gusset film 50 in the front-back direction Z with the liquid content storage section 21 in between, and heat-sealed to the front film 30 and the back film 40 by a second side seal 23 on the other side of the pouch.

Each of the films 30, 40, 50, 60, 70 is formed as a resin film having a heat-sealing layer on at least one surface thereof, and is disposed so that the heat-sealing layers face each other at the locations where they are heat-sealed to each other.
In FIG. 2 and other figures, the heat-sealed areas of the films 30, 40, 50, 60, and 70 are shown filled in.

As shown in Figs. 1 and 2, the pouch body 20 has a first side seal 22 formed by heat-welding both lateral sides of the side gusset film 50 to the films 30, 40, a second side seal 23 formed by heat-welding both lateral sides of the second gusset film 60 to the films 30, 40, a top seal 24 formed by heat-welding the films 30, 40, 60 at a position corresponding to the top of the pouch body 20 facing the bottom seal 25 across the liquid content storage section 21, a bottom seal 25 formed by heat-welding the films 30, 40, 60 at a position corresponding to the pouch bottom 20a of the pouch body 20, and an intermediate seal 26 formed by heat-welding the films 30, 40 and the inner film 70. These seals 22 to 26 constitute the bag-making seal section.

In addition, at a predetermined location (e.g., location A shown in FIG. 1) on the side of the pouch body 20 where the gusset portion is formed, a portion is formed by partially removing the second gusset film 60, and the films 30 and 40 are heat-sealed. This prevents the films 30 and 40 from separating at the above-mentioned predetermined location (e.g., location A shown in FIG. 1).

As shown in FIG. 3, the side gusset film 50 has a front seal area 51 that is heat-sealed to the front film 30 at the first side seal 22, a back seal area 52 that is heat-sealed to the back film 40 at the first side seal 22, and a non-seal area 53 that is an area inside the front seal area 51 and the back seal area 52.

As shown in FIG. 3 , the non-sealed area 53 has a front outer edge 54 which is the boundary with the front sealed area 51 , and a back outer edge 55 which is the boundary with the back sealed area 52 .
The side gusset film 50 is formed linearly symmetrically (left-right symmetrically) with respect to an imaginary line extending along the up-down direction Y through the center of the side gusset film 50 in the front-back direction X; in other words, the front outer edge 54 and the back outer edge 55 are formed linearly symmetrically (left-right symmetrically) with respect to the imaginary line.

As shown in FIG. 3, the front outer edge 54 and the back outer edge 55 each have a base edge 54a, 55a spaced apart from each other in the front-back direction X, a lower inclined edge 54b, 55b extending from the lower end of the base edge 54a, 55a to the lower end connecting portion 53a that connects the lower ends of the front outer edge 54 and the back outer edge 55, and an upper inclined edge 54c, 55c extending from the upper end of the base edge 54a, 55a to the upper end connecting portion 53b that connects the upper ends of the front outer edge 54 and the back outer edge 55.

As shown in FIG. 3, the base edges 54a, 55a are formed so as to extend linearly in the up-down direction Y.
As shown in FIG. 3, the lower inclined edges 54b, 55b extend linearly and incline in the up-down direction Y so as to move inward in the front-to-back direction X as they extend downward (at an inclination angle of 45° in this embodiment).

The upper inclined edges 54c, 55c are composed of at least two inclined portions with different angles of inclination with respect to the vertical direction Y. In this embodiment, as shown in FIG. 4, the upper inclined portions 54d, 55d connect the upper ends of the base edges 54a, 55a to a point located above and inside the front-back direction X of the base edges 54a, 55a, and the upper ends of the base edges 54a, 55a to a point located above and inside the front-back direction X, and the upper ends of the gently inclined portions 54d, 55d connect to the upper end connecting portion 53b.

In the example shown in FIG. 4, each gently sloping portion 54d, 55d is made up of a straight line portion that extends at an incline in the vertical direction Y so as to move inward in the front-back direction X as it extends upward, and each steeply sloping portion 54e, 55e is made up of a straight line portion that extends at an incline in the vertical direction Y so as to move inward in the front-back direction X as it extends upward (at an inclination angle of 45° in this embodiment).

A first imaginary line L1 passing through the upper and lower ends of the gently inclined portions 54d, 55d extends at an incline in the up-down direction Y so as to move inward in the front-back direction X as it extends upward, as shown in FIG.
A second imaginary line L2 passing through the upper and lower ends of the steeply inclined portions 54e, 55e extends at an incline in the up-down direction Y so as to move inward in the front-back direction X as it extends upward, as shown in FIG.
As shown in FIG. 4, the inclination angle θ1 of the first virtual line L1 with respect to the vertical direction Y is smaller than the inclination angle θ2 of the second virtual line L2 with respect to the vertical direction Y. In other words, the degree to which the second virtual line L2 (steeply inclined portions 54e, 55e) leans inward in the front-to-back direction X as it moves upward is stronger (larger) than the first virtual line L1 (gently inclined portions 54d, 55d).

3 and 4, the side gusset film 50 has a flange facing region 56 to which the flange 81 of the spout 80 is disposed to face. In this embodiment, the flange facing region 56 is formed in an annular shape having a circular outer periphery.
The side gusset film 50 also has a circular spout through hole 57 formed to penetrate the film in the thickness direction, for inserting the pouring tube portion 82 of the pouring spout 80 therethrough.

The spout 80 is formed from a synthetic resin or the like, and is attached to the pouch body 20 to function as an outlet for the liquid contents. As shown in Figures 1 and 7, the spout 80 has a flange 81 arranged opposite the side gusset film 50, a spout tube portion 82 extending perpendicular to the disk-shaped flange 81 and having a spout hole 82a formed therein, and a cap 83 removably attached to the tip of the spout tube portion 82.

In this embodiment, the flange 81 is formed as a disk-shaped (annular) portion having a through hole formed in the center and a circular outer peripheral edge (flange outer peripheral edge), and is positioned inside the pouch body 20, with at least a portion of it fixed to the inner surface of the side gusset film 50 by heat welding.
In addition, in FIG. 1, only the flange 81 of the spout 80 is shown, and as shown in FIG. 7, most of the spout 80, such as the cylindrical portion 82 and the cap 83, is disposed outside the pouch body 20.

At least a portion (most of the portion in the example shown in FIG. 4) of the flange 81 (flange facing region 56), including the center of the flange 81 (flange facing region 56), is disposed opposite the region between the upper inclined edge 54c of the front outer edge 54 and the upper inclined edge 55c of the back outer edge 55, as shown in FIG. 4, and more specifically, is disposed opposite the region between the gently inclined portion 54d of the front outer edge 54 and the gently inclined portion 55d of the back outer edge 55.

Furthermore, as shown in FIG. 4, the flange 81 (flange facing region 56) is positioned at the center of the side gusset film 50 in the front-back direction X, and the distance between the front outer edge 54 and the outer edge of the flange 81 (flange facing region 56) and the distance between the back outer edge 55 and the outer edge of the flange 81 (flange facing region 56) in the front-back direction X are equal.

The above-mentioned region between the upper inclined edge 54c of the front outer edge 54 and the upper inclined edge 55c of the back outer edge 55, to which (at least a part of) the flange 81 is attached, is a portion that inclines so as to approach the inside of the pouch body 20 in the front-rear direction Z as it moves upward when viewed in the front-rear direction X with the spout-equipped pouch 10 placed on a placement surface with the pouch bottom 20a facing down, as can be seen from Fig. 1. Therefore, when the spout- equipped pouch 10 is placed on a placement surface, the pouring tube portion 82 of the pouring spout 80 attached to the above region is obliquely upward extending obliquely with respect to the up-down direction Y (and the front-rear direction Z) when viewed in the front-rear direction X, as can be seen from Figs. 1 and 7, in a state in which the spout-equipped pouch 10 is placed on a placement surface, in other words, is inclined so as to approach the outside of the pouch body 20 in the front-rear direction Z as it moves upward.

The inner film 70 is formed as a rectangular (or approximately rectangular) flexible resin film having a heat-sealed layer on at least one side thereof, and as can be seen from Figures 1 and 2, is placed in the pouch body 20 (content liquid storage section 21) in a folded state, with predetermined locations thereof heat-sealed to the films 30, 40.
As shown in FIG. 2, the inner film 70 has a plurality of film perforations formed as holes penetrating the film in the thickness direction.

Furthermore, in the area (top seal 24) where the films 30, 40, 60 overlap in the bag-making seal section on the top side of the spouted pouch 10, as shown in Figures 1 and 2, a handle hole 27 is formed through the area where the films 30, 40, 60 overlap, allowing a user to hold the spouted pouch 10 with their hand or fingers.
In FIG. 2, for ease of technical understanding, the handle holes 27 are shown as being formed without the films 30, 40, and 60 being heat-welded together. In this embodiment, however, the handle holes 27 are formed by punching out predetermined locations after the films 30, 40, and 60 are heat-welded together.

Here, as shown in Fig. 7(a), when the spouted pouch 10 is in an unopened state (state in which the content liquid has not yet been poured out) and the top seal 24 (the top side of the pouch) with the handle hole 27 formed therein is supported (held) to hold up the spouted pouch 10 containing the content liquid in the content liquid containing section 21, the content liquid contained in the spouted pouch 10 contains a volume equal to or less than the volume of the portion of the content liquid containing section 21 below the imaginary line L3, which is drawn along the extension direction of the lower edge of the inner circumferential surface of the pouring hole 82a of the pouring spout 80 (specifically, the lower edge of the inner circumferential surface of the pouring hole 82a at the tip side of the pouring tube section 82). Fig. 7(a) shows a state in which the content liquid containing section 21 contains the same amount of content liquid as the volume of the portion of the content liquid containing section 21 below the imaginary line L3.
In this manner, by setting the amount of content liquid to be accommodated in content liquid accommodation section 21, when spouted pouch 10 is tilted and lifted so that pouring tube portion 82 of pouring spout 80 is oriented sideways (by gripping the top side of the pouch on which handle hole 27 is formed), as in the posture shown in FIG. 7( a), to pour out the content liquid, it is possible for pouring tube portion 82 to extend horizontally or to be oriented diagonally downward (i.e., in a state inclined downward from the horizontal). Therefore, it is possible to avoid the so-called leakage of content liquid as shown in FIG. 7( b), that is, the phenomenon in which the content liquid leaking from the tip of pouring tube portion 82 flows down the underside of the outer circumferential surface of pouring tube portion 82, which occurs when pouring spout 80 is oriented diagonally upward (i.e., in a state inclined upward from the horizontal) after the pouring out of the content liquid has been completed.
Furthermore, from the standpoint of increasing the volume of the content liquid that can be contained within the pouch body 20 while suppressing such leakage of the content liquid, it is desirable to reduce the inclination angle of the region of the side gusset film 50 where the flange 81 is attached (the region between the gently sloping portions 54d, 55d) with respect to the vertical direction Y, thereby reducing the inclination angle of the flange 81 with respect to the vertical direction Y of the pouch body 20, and to adjust the extension direction (the direction in which the virtual line L3 extends) of the pouring spout 80 downward (to approach a direction perpendicular to the vertical direction Y).

Next, modified examples of the upper inclined edges 54c, 55c of the side gusset film 50 will be described below with reference to Figures 5 and 6. Note that the modified examples described below are identical to the above-described embodiment except for some configurations, and therefore descriptions of the configurations other than the differences will be omitted.

First, in the example shown in FIG. 4 above, the gently sloping portions 54d, 55d are described as being composed of one straight line portion that extends at an angle in the vertical direction Y, but the specific form of the gently sloping portions 54d, 55d is not limited to the above, and may be composed of at least one straight line portion, at least one curved line portion, or a combination of these.

In the example shown in FIG. 5, the gently sloping portions 54d, 55d are made up of multiple (three) straight line portions, specifically a first straight line portion that extends from the upper end of the base edge portion 54a, 55a, sloping in the vertical direction Y so as to move inward in the front-back direction X as it moves upward, a second straight line portion that extends from the upper end of the first straight line portion along the vertical direction Y, and a third straight line portion that extends from the upper end of the second straight line portion, sloping in the vertical direction Y so as to move inward in the front-back direction X as it moves upward.

In the example shown in FIG. 6, the gently sloping portions 54d, 55d are made up of multiple (three) straight line portions, specifically a first straight line portion that extends from the upper end of the base edge portion 54a, 55a, sloping in the vertical direction Y so as to move inward in the front-back direction X as it moves upward, a second straight line portion that extends from the upper end of the first straight line portion, sloping in the vertical direction Y so as to move outward in the front-back direction X as it moves upward, and a third straight line portion that extends from the upper end of the second straight line portion, sloping in the vertical direction Y so as to move inward in the front-back direction X as it moves upward.

As can be seen from the examples shown in Figures 5 and 6, the straight line portions (or curved portions) constituting the gently sloping portions 54d, 55d may be of any type, such as those that extend at an incline in the vertical direction Y so as to move inward in the front-back direction X as they extend upward, those that extend along the vertical direction Y, and those that extend at an incline in the vertical direction Y so as to move outward in the front-back direction X as they extend upward.

Similarly, in the examples shown in Figures 4 to 6, the steeply inclined portions 54e and 55e are each composed of a single straight portion that extends at an angle in the vertical direction Y. However, the specific form of the steeply inclined portions 54e and 55e is not limited to the above, and may be composed of at least one straight portion, at least one curved portion, or a combination of these.

In addition, in the example shown in Figure 6, at least one of the front seal area 51 or the back seal area 52 (both in the example shown in Figure 6) has control seal portions 51a, 52a that are located inside the first virtual line L1 in the front-back direction X.
As shown in Figure 6, the control seal portions 51a, 52a are formed so as to have a portion located in the area between the lower half of the flange facing region 56 (flange 81) and the front seal region 51 or the back seal region 52 in the front-back direction X, and not to have a portion located above the center of the flange facing region 56 (flange 81) in the up-down direction Y.
Furthermore, the control seal portions 51a, 52a, the locations located closest to the inside in the front-to-back direction X, are located in the area between the lower half of the flange facing area 56 (flange 81) and the front seal area 51 or the back seal area 52 in the front-to-back direction X, as shown in Figure 6.
As shown in FIG. 6, the control seal portions 51a, 52a have a portion located below the flange facing region 56 (flange 81).

Although the embodiments of the present invention have been described above in detail, the present invention is not limited to the above embodiments, and various design modifications can be made without departing from the invention described in the claims. In addition, the configurations of the above-mentioned embodiments and the modified examples described below may be combined in any manner to form a spouted pouch 10.

For example, the spouted pouch 10 may be housed in an exterior case (not shown) when in use, on display, or when transported, or the spouted pouch 10 itself may be used, displayed, or transported without being housed in an exterior case (not shown).

As for the specific embodiment of each of the films 30, 40, 50, 60, and 70, as long as it has a layer having heat-sealing properties such as an olefin-based layer such as low-density polyethylene or polypropylene, or a polyester-based layer such as PET (polyethylene terephthalate) on at least one side, the heat-sealing layer may be a single layer, or any layer may be laminated on the heat-sealing layer. Any material may be used to form the laminate, and any desired layer may be formed by laminating known polyesters such as PET or PBT (polybutylene terephthalate), polypropylene, polyamide, polyethylene, aluminum foil, etc.
In addition, in the above-described embodiment, the pouch body 20 has been described as being formed from four films, namely, films 30, 40, 50, and 60. However, the specific aspects of the pouch body 20, such as the number of films constituting the pouch body 20, are not limited to the above, and for example, a bottom gusset film may be separately provided at a position corresponding to the pouch bottom 20a.
Also, the inner film 70 does not need to be provided.
In addition, in the above-described embodiment, the spouted pouch 10 is configured as a large-capacity pouch with a capacity of 2 to 5 L, and the pouring spout 80 is also configured as a large spout with an outer diameter of the flange 81 of 50 to 70 mm, but the sizes of the spouted pouch 10 and the pouring spout 80 are not limited to this and may be set arbitrarily depending on the embodiment.

In addition, in the above-described embodiment, the front outer edge 54 and the back outer edge 55 are described as being formed in line symmetry (bilateral symmetry) with respect to an imaginary line extending along the up-down direction Y through the center of the side gusset film 50 in the front-back direction X, but the front outer edge 54 and the back outer edge 55 may be formed asymmetrically.

In addition, in the above-described embodiment, the control seal portions 51a, 52a are described as being formed continuously with the seal areas 51, 52, but the control seal portions 51a, 52a may be formed independently (at a position separated from) the seal areas 51, 52.

In addition, in the above-described embodiment, the flange 81 is described as being formed in a disk shape having a circular outer peripheral edge, but the specific shape of the flange 81 may be any shape, such as having an outer peripheral edge (flange outer peripheral edge) of a shape other than circular, such as a rectangular or polygonal shape.
In addition, in the above embodiment, the flange 81 is described as being fixed to the inner surface of the side gusset film 50, but the flange 81 may be fixed to the outer surface of the side gusset film 50.
The flange 81 may be fixed to the side gusset film 50 by any method other than heat welding, such as adhesion.

In this specification, terms indicating up and down, such as "top," "bottom," and "side," are used, but these terms do not limit the orientation of the spouted pouch 10 when it is displayed or transported. For example, the spouted pouch 10 may be placed on a placement surface with its side or top facing down when it is displayed or transported.

In the above embodiment, the liquid contents are poured out by holding the top side of the pouch and lifting the spouted pouch 10, but the specific manner in which the liquid contents are poured out is not limited to the above. For example, the liquid contents may be poured out by holding or supporting a part other than the top of the pouch, such as the pouch bottom 20a, and holding the spouted pouch 10 in a lifted state, or the liquid contents may be poured out while the spouted pouch 10 is placed on a support surface.

REFERENCE SIGNS LIST 10: Pouch with spout 20: Pouch body 20a: Pouch bottom 21: Content liquid storage section 22: First side seal (side seal)
23: Second side seal 24: Top seal 25: Bottom seal 26: Middle seal 27: Handle hole 30: Front film 40: Back film 50: Side gusset film 51: Front seal area 51a: Control seal portion 52: Back seal area 52a: Control seal portion 53: Non-seal area 53a: Lower end connecting portion 53b: Upper end connecting portion 54: Front outer edge 54a: Base edge portion 54b: Lower inclined edge portion 54c: Upper inclined edge portion 54d: Gentle inclination portion 54e: Steep inclination portion 55: Back outer edge 55a: Base edge portion 55b: Lower inclined edge portion 55c: Upper inclined edge portion 55d: gently inclined portion 55e: steeply inclined portion 56: flange facing region 57: through hole for spout 60: second film 70: inner film 80: spout spout 81: flange 82: spout tube portion 82a: spout hole 83: cap L1: first imaginary line L2: second imaginary line X: front-rear direction Y: up-down direction Z: front-rear direction

Claims (7)

A spout-equipped pouch comprising a front film, a back film, a side gusset film disposed between the front film and the back film at a side portion of the pouch and heat-sealed to the front film and the back film by a side seal, and a spout attached to the side gusset film,
The side gusset film has a front seal area that is heat-sealed to the front film at the side seal, a back seal area that is heat-sealed to the back film at the side seal, and a non-seal area that is an area inside the front seal area and the back seal area,
The non-sealed area has a front outer edge that is a boundary with the front seal area and a back outer edge that is a boundary with the back seal area,
The front outer edge and the back outer edge each have a base edge portion arranged to be spaced apart from each other in the front-back direction, and an upper inclined edge portion extending from an upper end of the base edge portion to an upper end connecting portion that connects the upper ends of the front outer edge and the back outer edge to each other,
At least a portion of the flange of the spout is disposed opposite the region between the upper inclined edge of the front outer edge and the upper inclined edge of the back outer edge ;
A spout-equipped pouch , wherein the upper inclined edge portion is composed of at least two inclined portions having different inclination angles relative to the vertical direction. 2. The spout-equipped pouch according to claim 1, wherein a part or all of the flange is disposed facing an area between the part with the smaller inclination angle of the at least two inclined portions of each of the front outer edge and the back outer edge. the upper inclined edge portion has a gently inclined portion connecting a portion located above and inside the upper end of the base edge portion to the upper end of the base edge portion, and a steeply inclined portion connecting the upper end of the gently inclined portion to the upper end connecting portion,
a first imaginary line passing through an upper end and a lower end of the gently inclined portion extends at an inclination in the up-down direction so as to move inward in the front-back direction as it extends upward,
a second imaginary line passing through an upper end and a lower end of the steeply inclined portion extends at an inclination in the up-down direction so as to move inward in the front-back direction as it extends upward,
an inclination angle of the first virtual line with respect to the vertical direction is set to be smaller than an inclination angle of the second virtual line with respect to the vertical direction,
2. The spout-equipped pouch according to claim 1, wherein at least a portion of the flange is disposed opposite the area between the gently sloping portion of the front outer edge and the gently sloping portion of the back outer edge. The side gusset film has a flange facing region in which the flange is disposed opposite to the flange,
At least one of the front seal area and the back seal area has a control seal portion located inside the first virtual line in the front-back direction,
4. The spout-equipped pouch according to claim 3, wherein the control seal portion has a portion located in an area between a lower half of the flange facing area and the front seal area or the back seal area in the front-back direction. The spout-equipped pouch according to claim 4, characterized in that the control seal portion has a portion located below the flange-facing region. The spouted pouch according to any one of claims 1 to 5, characterized in that the liquid content storage section of the spouted pouch contains a volume of liquid content equal to or less than the volume of the portion of the liquid content storage section that is below an imaginary line that is drawn along the direction of extension of the lower edge of the inner periphery of the spout's spout hole. The spouted pouch according to any one of claims 1 to 5, characterized in that the area between the upper inclined edge of the front outer edge and the upper inclined edge of the back outer edge is configured to be inclined toward the inside of the pouch body as it goes upward when the spouted pouch is placed on a placement surface.

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