CN118201854A - Small bag with nozzle - Google Patents

Abstract

Provided is a pouch with a mouth, wherein the breaking of a pouch body from the vicinity of the outer periphery of a flange is suppressed. In a pouch (110) with a mouth, a mouth attachment film (130) has a flange facing region (131) in which flanges (171) of a mouth (170) are arranged to face each other, and a pouch body (120) has shape control seals (127, 128) formed by welding a portion of the mouth attachment film (130) located on the inner side of a lateral direction (Xa) than a connection seal (122) to a side Fang Baomo, the shape control seals (127, 128) having portions located in the lateral direction (Xa) in a region between the flange facing region (131) and the connection seal (122).

Description

Small bag with nozzle

Technical Field

The present invention relates to spouted pouches having spouts attached to the pouch body.

Background

Conventionally, as a container for containing a content liquid such as drinking water or a liquid detergent, there has been known a pouch with a mouth attached to a pouch body as an injection port by heat-welding a plurality of resin films, and a pouch with a mouth attached to a side wall (gusset) film of a pouch body by heat-welding a plurality of films in a lateral direction (for example, refer to patent documents 1 and 2).

Further, as a method of attaching a mouth in such a pouch with a mouth, the following method is also generally known: the flange of the mouth is disposed opposite to the mouth attachment film, and the flange is fixed to the mouth attachment film by heat welding or the like.

Prior art literature

Patent literature

Patent document 1: japanese patent application laid-open No. 2012-121611

Patent document 2: japanese patent laid-open No. 2020-132177

Disclosure of Invention

Problems to be solved by the invention

However, in the conventional spouted pouches known in patent document 1 and patent document 2, there are the following problems when the spouted pouch is dropped or the like: due to the weight of the content, there is a case where the film is attached to the mouth portion in the vicinity of the outer peripheral edge of the flange, and a broken bag of the pouch body starting from the vicinity of the outer peripheral edge of the flange is generated.

It is assumed that the breaking of the pouch body is caused by, for example, the mouth portion being rotated (tilted) with respect to the mouth attachment film and a moment load being applied near the outer peripheral edge of the flange, and the vicinity of the flange being dropped to the ground in a state where the moment load is applied.

In the conventional spouted pouch known in patent document 2, in a use scheme or the like in which the pouch is lifted to pour out the content liquid, there is a case where the spout accidentally moves due to the weight of the content liquid or the like that has entered the spout at the time of pouring out the content liquid, and as a result, the orientation of the pouring tube portion of the spout is difficult to be determined, and the content liquid is difficult to pour out.

Accordingly, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a pouch with a spout, which has a simple structure, improves the ease of pouring out the content liquid through the spout, and suppresses the breaking of the pouch body starting from the vicinity of the outer peripheral edge of the flange.

Technical proposal

The present invention is a spouted pouch having a spout attached to a pouch body, wherein the pouch body has: a mouthpiece attachment film to which the mouthpiece is attached; and a side film connected to the mouth attachment film by connection seals formed on both lateral sides of the mouth attachment film, the mouth attachment film having a flange facing region in which the flange of the mouth is arranged to face, the pouch body having a shape control seal portion formed by welding the side Fang Baomo to a portion of the mouth attachment film located laterally inward of the connection seals, the shape control seal portion having a portion located laterally in a region between the flange facing region and the connection seals, whereby the problem is solved.

Further, a pouch with a spout is provided with: a surface film; a backside film; a side film disposed between the front film and the back film at a pouch side, and heat-welded to the front film and the back film by an edge seal; and a mouth attached to the highwall film, wherein the highwall film has: a front side sealing region thermally welded to the front side film at the edge seal; a backside sealing region thermally welded to the backside film at the edge seal; and a non-sealing region which is a region inside the front side sealing region and the back side sealing region, the non-sealing region having a front side outer edge which is a boundary with the front side sealing region and a back side outer edge which is a boundary with the back side sealing region, the front side outer edge and the back side outer edge each having: the base edge parts are arranged in a separated manner 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 connecting an upper end of the front side outer edge and an upper end of the back side outer edge to each other, at least a part of the flange of the mouth portion being disposed opposite to a region between the upper inclined edge portion of the front side outer edge and the upper inclined edge portion of the back side outer edge, thereby solving the problem.

Further, a pouch with a mouth, in which a mouth is attached to a pouch body, wherein the pouch body has a mouth attachment film to which the mouth is attached, the mouth has a flange disposed opposite the mouth attachment film, and the flange has: the flanging fixedly-connecting part is fixedly connected with the mouth part attaching film; and a flange buffer portion formed in at least a partial region of an outer periphery of the flange fixing portion, not fixed to the mouth attachment film, thereby solving the problem.

Effects of the invention

According to the invention of claim 1, the pouch body has the shape control seal portion formed by welding the side Fang Baomo to the portion of the mouth attachment film located on the inner side in the lateral direction than the connection seal, and the shape control seal portion has the portion located in the region between the flange facing region and the connection seal, whereby the lateral spacing between the seal portions on both sides in the lateral direction is made narrower than the peripheral portion by forming the shape control seal portion, whereby the state of the mouth attachment film in the vicinity of the flange outer periphery where the bag is likely to be broken can be adjusted so that the mouth attachment film is deep into the pouch, the mouth attachment film in the vicinity of the flange outer periphery is unlikely to collide with the ground or the like, and the tension of the mouth attachment film in the vicinity of the flange outer periphery can be relaxed, and therefore, even in the case of dropping the pouch with the mouth, the bag body with the flange outer periphery as the starting point can be suppressed.

According to the inventions of claims 2 and 3, the spout is attached to the spout attachment film at a position closer to the second side of the first side and the second side in the longitudinal direction than the center in the longitudinal direction of the spout attachment film, and the pouch body is provided with the first shape control seal portion having a portion located in the region between the first opposing region and the connection seal in the lateral direction as the shape control seal portion, whereby the breaking of the pouch body starting from the vicinity of the portion facing the first side in the longitudinal direction of the flange outer periphery as a portion where the breaking of the pouch is likely to occur, such as when the spouted pouch is dropped, can be suppressed. Further, in the case where the mouth portion is attached to the second side closer to the center of the longitudinal direction of the mouth portion attaching film, since the mouth portion attaching film expands outward due to the self weight of the content liquid, the mouth portion is inclined toward the second side, but by forming the first shape control seal portion, the inclination of the flange can be adjusted so that the mouth portion is directed toward the first side, and therefore the posture (orientation) of the mouth portion can be corrected.

According to the invention of claim 4, the second shape control seal portion has a portion located in the region between the second opposing region and the connecting seal, whereby not only the bag breakage in the vicinity of the portion of the second side in the longitudinal direction facing the flange outer peripheral edge, which is a portion where the bag breakage easily occurs in the case of dropping the spouted pouch or the like, can be suppressed, but also the inclination of the flange can be adjusted with the spout facing the second side by forming the second shape control seal portion, and therefore, by forming the first shape control seal portion, the spout can be prevented from excessively facing the first side or the like, and the posture of the spout can be corrected, and further, the degree of freedom in design such as the lateral width of the first shape control seal portion can be ensured.

According to the invention of claim 5, the lateral dimension from the connection seal to the innermost top portion of the first shape control seal portion is set to be equal to or larger than the lateral dimension from the connection seal to the innermost top portion of the second shape control seal portion, whereby the posture of the mouth portion can be appropriately maintained by forming the first shape control seal portion and the second shape control seal portion.

According to the invention of claim 6, the longitudinal position of the end portion on the second side in the longitudinal direction of the first shape control seal portion is set to the position laterally of the flange opposing region, whereby the mouth attachment film and the connection seal can be folded around the vicinity of the end portion on the second side of the first shape control seal portion as a starting point when the spouted pouch is dropped or the like, and the deformation of the mouth attachment film can be guided so that the mouth is rotated toward the second side by the axis extending in the transverse direction by the manner in the flange, whereby the spouted pouch can be guided to a state in which the mouth is retracted toward the inside of the pouch to prevent strong action on the mouth by contact with the ground or the like when the spouted pouch is dropped or the like.

According to the invention of claim 7, the pouch body includes the second shape control seal portion having a portion located in a region between the second opposing region and the connection seal in the lateral direction as the shape control seal portion, whereby the breaking of the pouch body starting from the vicinity of the portion of the second side of the flange outer periphery facing the longitudinal direction, which is a portion where the breaking of the pouch is likely to occur, such as when the spout-equipped pouch is dropped, can be suppressed.

According to the invention of claim 8, the shape control seal portions are formed on both sides of the region facing each other with the flange interposed therebetween, whereby the pouch body having the vicinity of the outer peripheral edge of the flange as the starting point can exhibit the pouch breakage preventing effect satisfactorily achieved by the shape control seal portions.

According to the invention of claim 9, the shape control seal portion is continuously formed in the connection seal, whereby it is possible to prevent the content liquid that is easily generated when the shape control seal portion is formed separately from the connection seal from remaining between the connection seal and the shape control seal portion.

According to the invention of claim 10, at least a part of the flange of the spout is disposed so as to face the region between the upper side inclined edge portions in the side wall film, and therefore, the gap between the inner edge of the sealing region (edge seal) of the side wall film and the outer peripheral edge of the flange can be narrowed without affecting the self-standing property of the pouch main body or the like, and the spout operation can be restricted, and therefore, the orientation of the spout pouring tube portion of the spout can be well determined, and the ease of pouring the content liquid through the spout can be improved. That is, by disposing the flange of the mouth portion between the upper inclined edge portions having a narrower lateral width in the front-back direction than the region between the base edge portions, not only can the interval between the inner edge of the sealing region (edge seal) of the side edge film and the outer peripheral edge of the flange be narrowed, but also the region between the upper inclined edge portions is a portion located above the side edge film in a state where the spouted pouch is placed on the placement surface, and is a portion that does not affect the self-standing property or the like of the pouch body even if the shape of the edge portion is changed, and therefore, the shape of the edge portion can be freely changed to restrict the operation of the mouth portion satisfactorily.

Further, according to the invention of claim 10, since the region between the upper inclined edges of the side edge film is a region inclined so as to approach the inside of the pouch body with the spout in the state where the pouch with the spout is placed on the placement surface, even when the spout is turned down to the inside of the pouch body with the spout turned in depth, the side edge film near the outer peripheral edge of the spout is less likely to collide with the ground or the like, and therefore, the breaking of the pouch body with the vicinity of the outer peripheral edge of the spout as the starting point can be suppressed, and the tip position of the spout pouring tube can be retracted toward the inside of the pouch body as compared with the case where the spout is attached to the region between the base edges of the side edge film.

According to the invention of claim 11, the upper inclined edge portion is formed of at least two inclined portions having different inclination angles with respect to the vertical direction, and by adjusting the inclination angles of these portions, the edge shape of the upper inclined edge portion can be adjusted, and the interval between the inner edge of the sealing region (edge seal) of the side edge film and the outer peripheral edge of the cuff, the interval between the upper inclined edge portions (edge seal) can be narrowed, or the inclination angle of the cuff can be favorably adjusted with a simple configuration.

According to the invention of claim 12, the upper side inclined edge portion includes: a gently inclined portion connecting a portion located above the upper end of the base edge portion and located inside in the front-back direction with the upper end of the base edge portion; and a steeply inclined portion connecting an upper end of the gently inclined portion to the upper end connecting portion, wherein at least a part of the flange of the mouth is disposed opposite to a region between the gently inclined portion of the front side outer edge and the gently inclined portion of the back side outer edge. This makes it possible to prevent the space above the mouth attachment position in the content liquid containing portion in the pouch main body from becoming large in the vertical direction, to narrow the interval between the inner edge of the sealing region (edge seal) of the side wall film and the outer peripheral edge of the flange, to thereby satisfactorily restrict the operation of the mouth, and to narrow the interval between the upper side inclined edge portion (edge seal) in the region where the mouth is attached in the side wall film, to thereby deep the position of the mouth toward the inside of the pouch main body.

In the invention according to claim 12, the inclination angle of the inclination is gentle so as to approach the inside of the pouch body in the upward direction, and by attaching the spout to the region between the gently inclined portions, the inclination angle of the spout with respect to the flange in the up-down direction can be made smaller, and the direction of extension of the spout outlet tube portion can be adjusted downward, so that leakage of the content liquid (a phenomenon in which the content liquid leaking from the tip of the spout outlet tube portion flows along the lower surface of the outer peripheral surface of the outlet tube portion when the spout outlet tube portion is oriented obliquely upward in the state in which the content liquid is completely injected) can be suppressed, and the capacity of the content liquid contained in the pouch body can be increased.

According to the inventions of claims 13 and 14, at least one of the front side seal region and the back side seal region has a control seal portion located on the front-back direction inner side of the first virtual line, and the control seal portion has a portion located in the front-back direction in a region between the lower half portion of the burring opposing region and the front side seal region or the back side seal region. Thus, not only can the interval between the inner edge of the sealing region (edge seal) of the side wall film and the outer peripheral edge of the flange be narrowed in the lower half of the flange opposing region to more reliably restrict the operation of the mouth, but also the inclination of the flange can be adjusted so that the tip end side of the pouring tube portion of the mouth is directed downward by forming the control seal portion.

According to the invention of claim 15, in the content liquid containing portion of the spout pouch, when viewed in the front-back direction in the unopened state, the content liquid is contained in the content liquid containing portion at a lower portion than the capacity of the virtual line extending in the extending direction of the lower end edge of the inner peripheral surface of the spout hole of the spout, and thus, the spout tube portion of the spout is prevented from being oriented obliquely upward in the state where the content liquid is poured out, and thus, the occurrence of so-called leakage of the content liquid, in which the content liquid leaking from the tip end of the spout tube portion flows along the lower surface of the outer peripheral surface of the spout tube portion, can be prevented.

According to the inventions of claims 16 to 19, the cuff is formed in at least a partial region of the outer periphery of the cuff fixing portion, and the cuff buffer portion which is not fixed to the mouth attachment film is provided, whereby the mouth attachment film is bent at a portion corresponding to the outer periphery of the cuff when the mouth attachment film moves toward one of the inner side and the outer side of the pouch with respect to the cuff, and the mouth attachment film is bent at a portion corresponding to the outer periphery of the cuff fixing portion when the mouth attachment film moves toward the other of the inner side and the outer side of the pouch with respect to the cuff, and therefore, it is possible to prevent film damage caused by repeated application of a bending load to a specific portion of the mouth attachment film near the outer periphery of the cuff when a user grips and lifts the mouth-attached pouch, and to suppress breakage of the pouch body of the pouch with the vicinity of the outer periphery of the cuff as a starting point.

According to the inventions of claims 20 to 23, by forming the burring buffer portion, the burring of the pouch body starting from the portion of the burring outer periphery facing the first side or the vicinity of the portion facing the second side in the longitudinal direction, which is the portion where the burring is likely to occur, can be suppressed.

According to the inventions of claims 24 and 25, the flange buffer portion has the escape portion at the tip portion on the side away from the mouth attachment film on the outer peripheral side thereof, whereby excessive force applied to the mouth attachment film due to contact with the flange outer peripheral edge can be suppressed.

According to the invention of claim 26, the pouch body has the first shape control seal portion formed by welding the side Fang Baomo to the portion of the mouth attachment film located laterally inward of the connection seal, and the first shape control seal portion has the portion located laterally between the flange opposing region and the connection seal, whereby the first shape control seal portion is formed so that the lateral interval between the seal portions on both sides in the lateral direction is narrower than the peripheral portion, whereby the state of the mouth attachment film can be adjusted so that the mouth attachment film near the flange outer periphery of the pouch is easily made to penetrate into the pouch inner side, the mouth attachment film near the flange outer periphery is made to be less likely to collide with the ground or the like, and the tension of the mouth attachment film near the flange outer periphery can be relaxed, and therefore, even in the case of dropping a spouted pouch, the pouch body can be suppressed from the broken pouch from the vicinity of the flange outer periphery.

Drawings

Fig. 1 is an explanatory view showing a state in which a spouted pouch according to an embodiment of the present invention is placed on a placement surface in a use state.

Fig. 2 is an explanatory view showing each film constituting the pouch with a mouth.

Fig. 3 is an explanatory view showing the mouth attachment film.

Fig. 4 is an explanatory view for explaining a dimensional relationship and the like of each portion of the mouth attachment film.

Fig. 5 is an explanatory view showing an example of a modification of the spouted pouch at the time of dropping.

Fig. 6 is an explanatory view illustrating an attachment scheme of the mouth to the mouth attachment film.

Fig. 7 is an explanatory diagram for explaining the effect of the burring buffer portion.

Fig. 8 is an explanatory diagram showing a modification of the attachment scheme of the mouth.

Fig. 9 is an explanatory diagram showing a modification of the flange in which the escaping portion is formed.

Fig. 10 is an explanatory diagram for explaining the effect of the evacuation section.

Fig. 11 is an explanatory view illustrating an attachment scheme of the mouth.

Fig. 12 is an explanatory view showing a state in which a spouted pouch according to an embodiment of the present invention is placed on a placement surface.

Fig. 13 is an explanatory view showing each film constituting the pouch with a mouth.

FIG. 14 is an explanatory view showing a side wall film.

FIG. 15 is an explanatory view illustrating portions of the side wall film.

Fig. 16 is an explanatory diagram showing a first modification of the side wall film.

Fig. 17 is an explanatory diagram showing a second modification of the side wall film.

Fig. 18 is an explanatory view showing a case of the spouted pouch at the time of pouring out the content liquid.

Detailed Description

The spout pouch 110, which is an embodiment of the present invention, will be described below with reference to the drawings.

As shown in fig. 1, the pouch 110 with a mouth accommodates a content liquid such as drinking water and a liquid detergent, and is configured such that, when the pouch is used, the content liquid is injected from a mouth 170 attached to a side surface of the pouch body 120 in a state where the pouch bottom 120a is placed downward.

As shown in fig. 1, the spouted pouch 110 has: a pouch body 120 formed in a pouch shape by heat-welding flexible films 130, 140, 150 to form a sealing portion for making a pouch; an inner film 160 disposed in the pouch body 120; and a mouth 170 attached to the pouch body 120. The spouted pouch 110 is housed in an outer case (not shown) for use, display, and transportation.

The pouch body 120 is configured as a so-called lateral side-folded pouch having flaps formed on both side portions, and includes, as shown in fig. 1 and 2: a mouth attachment film 130 to which a mouth 170 is attached; two side films 140 connected to the mouth attachment film 130 by first connection seals 122 formed at both sides of the lateral direction Xa of the mouth attachment film 130; and a second film 150 disposed opposite to the mouth attachment film 130 through the content liquid accommodating portion 121, and connected to the side film 140 through second connection seals 123 formed on both sides in the lateral direction Xa thereof.

Each of the films 130, 140, 150, 160 is formed of a resin film having a heat-seal layer on at least one side thereof, and is disposed so that the heat-seal layers face each other at a portion where they are heat-sealed to each other.

In fig. 2 and the like, the heat-sealed areas of the films 130, 140, 150, 160 are shown as being filled.

As shown in fig. 3, the mouth attachment film 130 has a flange opposing region 131 in which the flange 171 of the mouth 170 is disposed to face.

As shown in fig. 3, the burring opposing region 131 includes: the first opposing region 131a is a portion closer to the first side (upper side in the present embodiment) than the center in the longitudinal direction Ya (up-down direction in the present embodiment); and a second opposing region 131b that is a portion closer to the second side (lower side in the present embodiment) than the center in the longitudinal direction.

The mouth attachment film 130 has a mouth through hole 132 formed therethrough in the front-back direction.

As shown in fig. 1 and 2, the pouch main body 120 includes: a first connecting seal 122 thermally welding both sides of the lateral Xa of the mouth attachment film 130 to the side film 140; a second connection seal 123 thermally welding both sides of the lateral direction Xa of the second film 150 to the side film 140; a top seal 124 for heat-welding the films 140 and 160 at positions corresponding to the top of the pouch body 120 facing the bottom seal 125 through the content liquid container 121; a bottom seal 125 heat-welding the films 140, 160 at positions corresponding to the pouch bottom 120a of the pouch body 120; and an intermediate seal 126 thermally welding the side film 140 and the inner film 160. These seals 122 to 126 constitute sealing portions for bag making.

As shown in fig. 2, the connection seals 122, 123 each have: band-shaped seal bases 122a, 123a extending in the longitudinal direction Ya; first inclined portions 122b, 123b formed on a first side (upper side) in the longitudinal direction Ya of the seal base portions 122a, 123a; and second inclined portions 122c, 123c formed on the second side (lower side) in the longitudinal direction Ya of the seal base portions 122a, 123 a.

As shown in fig. 2, the seal base portions 122a, 123a have inner edges extending linearly in the longitudinal direction Ya.

As shown in fig. 2, the first inclined portions 122b and 123b have inner edges inclined with respect to the longitudinal direction Ya (45 ° in the present embodiment) so as to approach the inner side of the lateral direction Xa toward the first side (upper side).

As shown in fig. 2, the second inclined portions 122c, 123c have inner edges inclined with respect to the longitudinal direction Ya (45 ° in the present embodiment) so as to approach the inner side of the lateral direction Xa toward the second side (lower side).

Further, a portion formed by removing the films 130 and 140 is formed at a predetermined portion (for example, a portion Aa shown in fig. 1) of both side portions of the pouch body 120 where the flap is formed, and the side films 140 are heat-welded to each other. This prevents separation between the side films 140 at the predetermined portions (for example, the Aa portions shown in fig. 1).

As shown in fig. 1 to 3, the pouch main body 120 includes a first shape control seal portion 127 as a shape control seal portion, which is formed by welding a portion of the side film 140 to a portion of the mouth attachment film 130 located on the inner side of the first connection seal 122 in the lateral direction Xa.

As shown in fig. 2 and 3, the first shape control seal portions 127 are formed to continuously protrude from the respective first connection seals 122 (seal base portions 122 a) toward the inner side of the lateral direction Xa on both sides of the lateral direction Xa across the burring opposing regions 131 (burring 171).

As shown in fig. 2 and 3, the first shape control seal portion 127 has a portion located in a region between the burring opposing region 131 and the first connecting seal 122 in the lateral direction Xa, more specifically, a portion located in a region between the first opposing region 131a located on the first side (upper side) of the burring opposing region 131 and the first connecting seal 122 in the lateral direction Xa, and also has no portion located in a region located between the second opposing region 131b located on the second side (lower side) of the burring opposing region 131 and the first connecting seal 122 in the lateral direction Xa.

By forming the first shape control seal 127 in this manner, the inclination of the flange 171 can be adjusted so that the first opposing region 131a of the flange 171 fixed to the mouth attachment film 130 moves toward the inside of the pouch, and the second opposing region 131b of the flange 171 moves toward the outside of the pouch, with the mouth 170 facing the first side (upper side). Further, by adjusting the inclination of the flange 171 in this manner, the occurrence of buckling-inducing portions that are easily formed in the vicinity of the end portion on the second side (lower side) of the seal base portion 122a of the first connection seal 122 can be suppressed.

Although not shown, the first shape control seal portion 127 may be formed to have a portion located in the region between the first opposed region 131a located on the first side (upper side) of the burring opposed region 131 and the first connecting seal 122 in the lateral direction Xa, and a portion located in the region between the second opposed region 131b located on the second side (lower side) of the burring opposed region 131 and the first connecting seal 122 in the lateral direction Xa.

As shown in fig. 3, the first shape control seal portion 127 includes: an innermost top 127a located innermost in the lateral direction Xa; a first inner edge 127b formed continuously on a first side (upper side) in the longitudinal direction Ya of the innermost top 127 a; and a second inner side edge portion 127c formed continuously on a second side (lower side) in the longitudinal direction Ya of the innermost top portion 127 a.

As shown in fig. 3, the first inner edge 127b is formed so as to be inclined toward the outside in the lateral direction Xa as approaching the first side (upper side) in the longitudinal direction Ya.

As shown in fig. 3, the second inner edge 127c is formed so as to be inclined toward the outside in the lateral direction Xa as approaching the second side (lower side) in the longitudinal direction Ya.

In the present embodiment, the innermost top 127a is formed in a dot shape (a vertex shape), but the innermost top 127a may be formed to have a length in the longitudinal direction Ya, in other words, to have an inner edge portion extending linearly in the longitudinal direction Ya.

In addition, as shown in fig. 3, when the inner edge portion near the innermost top portion 127a is formed in a convex curved shape toward the inside in the lateral direction Xa, R (radius of curvature) of the inner edge portion near the innermost top portion 127a is preferably set to 20mm or more from the viewpoint of a measure against bag breakage of the pouch.

In the present embodiment, the inner edges 127b and 127c are formed in a convex curved shape toward the inner side in the lateral direction Xa, but the specific configuration thereof may be arbitrary. For example, the inner edge portions 127b and 127c may be formed in a linear shape, may be formed in a curved shape so as to be convex toward the outside in the lateral direction Xa, and may be formed by arbitrarily combining one or more of the convex or concave curves and straight lines. When the inner edges 127b and 127c are formed in a convex curved shape toward the inner side in the lateral direction Xa, R (radius of curvature) is preferably set to 20mm or more.

As shown in fig. 2 and 3, the pouch main body 120 includes, on a second side (lower side) in the longitudinal direction Ya than the first shape control seal portion 127, a second shape control seal portion 128 as a shape control seal portion obtained by welding a portion located inside the first connecting seal 122 in the lateral direction Xa of the mouth attachment film 130 to a portion of the side film 140.

As shown in fig. 2 and 3, the second shape control seal portion 128 is formed to be spaced apart from the first shape control seal portion 127 in the longitudinal direction Ya.

As shown in fig. 2 and 3, the second shape control seal portion 128 is formed to continuously protrude from each first connecting seal 122 (seal base 122 a) toward the inside of the lateral direction Xa on both sides of the lateral direction Xa across the burring opposing region 131 (burring 171).

As shown in fig. 2 and 3, the second shape control seal portion 128 has a portion located in the region between the second opposing region 131b located on the second side (lower side) of the burring opposing region 131 and the first connecting seal 122 in the lateral direction Xa, and does not have a portion located in the region between the first opposing region 131a located on the first side (upper side) of the burring opposing region 131 and the first connecting seal 122 in the lateral direction Xa.

By forming the second shape control seal 128 in this manner, the inclination of the flange 171 can be adjusted so that the first opposing region 131a of the flange 171 fixed to the mouth attachment film 130 moves toward the outside of the pouch, and the second opposing region 131b of the flange 171 moves toward the inside of the pouch, with the mouth 170 facing the second side (lower side).

Although not shown, the second shape control seal portion 128 may be formed to have a portion located in the lateral direction Xa between the first connecting seal 122 and the first opposing region 131a located in the second side (lower side) of the burring opposing region 131, in addition to a portion located in the lateral direction Xa between the second opposing region 131b located in the second side (lower side) of the burring opposing region 131 and the first connecting seal 122.

As shown in fig. 3, the second shape control seal portion 128 has: an innermost top 128a located innermost in the lateral direction Xa; a first inner edge portion 128b formed continuously on a first side (upper side) in the longitudinal direction Ya of the innermost top portion 128 a; and a second inner side edge portion 128c formed continuously on a second side (lower side) in the longitudinal direction Ya of the innermost top portion 128 a.

As shown in fig. 3, the first inner edge 128b is formed so as to be inclined toward the outside in the lateral direction Xa as approaching the first side (upper side) in the longitudinal direction Ya.

As shown in fig. 3, the second inner edge 128c is formed so as to be inclined toward the outside in the lateral direction Xa as approaching the second side (lower side) in the longitudinal direction Ya.

In the present embodiment, the innermost top 128a is formed in a dot shape (a vertex shape), but the innermost top 128a may be formed to have a length in the longitudinal direction Ya, in other words, to have an inner edge portion extending linearly in the longitudinal direction Ya.

In addition, as shown in fig. 3, when the inner edge portion near the innermost top portion 128a is formed in a convex curved shape toward the inside in the lateral direction Xa, R (radius of curvature) of the inner edge portion near the innermost top portion 128a is preferably set to 20mm or more from the viewpoint of a measure against bag breakage of the pouch.

In the present embodiment, the second shape control seal 128 is described as being formed at a predetermined interval from the first shape control seal 127 in the longitudinal direction Ya, but the first shape control seal 127 and the second shape control seal 128 may be formed continuously in the longitudinal direction Ya, and in this case, the shape control seals 127 and 128 may be formed so that the inner edge of the connecting portion between the first shape control seal 127 and the second shape control seal 128 is located inside the first connecting seal 122 (seal base 122 a) in the lateral direction Xa.

In the present embodiment, the inner edges 128b and 128c are formed in a convex curved shape toward the inner side in the lateral direction Xa, but the specific configuration may be arbitrary. For example, the inner edge portions 128b and 128c may be formed in a linear shape, may be formed in a curved shape so as to be convex toward the outside in the lateral direction Xa, and may be formed by arbitrarily combining one or more of the convex or concave curves and straight lines. When the inner edges 128b and 128c are formed in a convex curved shape toward the inner side in the lateral direction Xa, R (radius of curvature) is preferably set to 20mm or more.

The mouth 170 is formed of synthetic resin or the like, is attached to the pouch body 120, and functions as an outlet for the content liquid.

As shown in fig. 1 and 2, the mouth 170 is attached at a position closer to the second side (lower side) than the center of the longitudinal direction Ya of the mouth attachment film 130.

As shown in fig. 6, the mouth portion 170 has a flange 171 disposed opposite to the mouth attachment film 130, and in this embodiment, the flange 171 is formed as a disk-shaped portion having a circular outer peripheral edge and having a through hole formed in the center thereof, and is disposed inside the pouch body 120 and fixedly attached to the inner surface of the mouth attachment film 130 by heat welding.

In fig. 1, 6, and the like, only a part of the mouth 170 is illustrated, and most of the mouth 170 is disposed outside the pouch body 120.

As shown in fig. 6, the flange 171 has: a flange fixing portion 172 having a ring shape (circular ring shape in the present embodiment) fixed to the mouth attachment film 130 by heat welding; a flange buffer portion 173 formed in at least a partial region of the outer periphery of the flange fixing portion 172, not fixed to the mouth attachment film 130; an outer peripheral non-fixed portion 174 formed in a partial region of the outer periphery of the burring fixed portion 172, and not fixed to the mouth attachment film 130; and an annular (annular in this embodiment) inner peripheral non-fixed portion 175 provided on the inner peripheral side of the burring fixed portion 172 and not fixed to the mouth attachment film 130.

The flange buffer portion 173 is formed at a portion where the outer periphery of the flange fixing portion 172 is not fixed to the mouth attachment film 130, as shown in fig. 6, and has a radial width Wa3 of 20 to 80% (more preferably 30 to 80%, still more preferably 45 to 80%), 2mm or more (still more preferably 3mm or more), and/or 650% or more (still more preferably 1000% or more) of the thickness (60 μm to 300 μm) of the mouth attachment film 130 at the portion where the flange buffer portion 173 is formed, based on the above-described setting (the radial width Wa3 is 20% or more, 2mm or more, and/or 650% or more of the thickness of the mouth attachment film 130 in the example shown in fig. 6), as shown in fig. 7, the flange buffer portion 173 has an effect of preventing the mouth attachment film 130 from being relatively moved toward the inner side of the pouch or the outer side of the pouch with respect to the mouth attachment film 171.

That is, as shown in fig. 7 (c) and (d), when the flange 171 is not provided with the flange buffer portion 173 and the mouth attachment film 130 moves relatively to the flange 171 toward the inside or outside of the pouch, a bending load acts on a specific portion of the mouth attachment film 130, and film damage may occur in the specific portion.

In contrast, in the case where the flange 171 is provided with the flange buffer portion 173, as shown in fig. 7 (a), the mouth attachment film 130 is bent at a portion corresponding to the outer peripheral edge of the flange 171 when the mouth attachment film 130 is relatively moved toward the inside of the pouch with respect to the flange 171, and the mouth attachment film 130 is bent at a portion corresponding to the outer peripheral edge of the flange fixing portion 172 when the mouth attachment film 130 is relatively moved toward the outside of the pouch with respect to the flange 171, so that a load of bending can be prevented from acting on a specific portion of the mouth attachment film 130.

If the radial width Wa3 of the flange buffer portion 173 is greater than 80% of the radial width Wa1, the radial width Wa2 of the flange fixing portion 172 becomes too narrow to sufficiently secure the fixing strength of the flange 171 to the mouth attachment film 130, and the fixing portion is easily peeled off due to impact or the like, which is not preferable. In order to secure the fastening strength, the radial width Wa2 of the burring fastening portion 172 is preferably set to 2mm or more (more preferably 3mm or more).

Further, regarding the relationship between the thickness of the mouth attachment film 130 and the radial width Wa3 of the burring buffer 173, it is preferable that the radial width Wa3 is set larger when the thickness of the mouth attachment film 130 is large. The reason for this is not yet defined, but is presumed to be caused by: when the thickness of the mouth attachment film 130 is small, the proportion of the mouth attachment film 130 that is subject to bending due to elastic deformation thereof is relatively large, and durability against bending is high, whereas when the thickness of the mouth attachment film 130 is large, the proportion of the mouth attachment film 130 that is subject to bending due to elastic deformation thereof is relatively small, and durability against bending is low.

As shown in fig. 6 (a), the burring buffer portion 173 is formed at a position including a portion facing the first side (upper side) in the longitudinal direction Ya in the center of the lateral direction Xa on the outer periphery of the burring fixing portion 172.

As shown in fig. 6 (a), the burring buffer portion 173 is also formed on the outer periphery of the burring fixing portion 172 at a position including a portion facing the second side (lower side) in the longitudinal direction Ya in the center of the lateral direction Xa.

In the example shown in fig. 6 (a), the cuff buffer portion 173 is formed such that the radial width thereof is not constant, the cuff buffer portion 173 has a wide portion 173a having the widest width in the radial direction of the cuff buffer portion 173, and the cuff buffer portion 173 is formed on the first side (upper side), the wide portion 173a being formed on the outer periphery of the cuff fixing portion 172 at a position including a portion facing the first side (upper side) in the longitudinal direction Ya in the center of the lateral direction Xa.

Similarly, in the cuff buffer portion 173 on the second side (lower side), a wide portion 173a is formed on the outer periphery of the cuff fixed portion 172 at a position including a portion facing the second side (lower side) in the longitudinal direction Ya in the center of the lateral direction Xa.

In the present embodiment, the wide portion 173a of the first (upper) cuff buffer portion 173 and the wide portion 173a of the second (lower) cuff buffer portion 173 are formed to have the same radial width, but may be formed to have different radial widths.

In the example shown in fig. 6 (a), the flange fixing portion 172 is set at a portion of the flange 171 where the thickness on the outer peripheral side is formed thinner.

The outer peripheral non-fixed portion 174 is formed to have a narrower radial width than the burring buffer portion 173 at a portion where the outer periphery of the burring fixed portion 172 is not fixed to the mouth attachment film 130, and the above-described effect (effect of avoiding the bending load from acting on a specific portion of the mouth attachment film 130) is not exerted by the burring buffer portion 173.

The peripheral non-fixed portion 174 functions as a portion where the mouth attachment film 130 is fixed to the flange 171 in a state where the flange 171 is fixed to the mouth attachment film 130 by an adhesive, and the adhesive is prevented from leaking (spilling) to the outside than the peripheral edge of the flange 171, or the periphery of the flange 171 is prevented from being in the vicinity of the peripheral edge of the flange 171, and the mouth attachment film 130 is fixed to the flange 171 in a state where wrinkles are generated in the mouth attachment film 130.

In the embodiment shown in fig. 6, the description has been given assuming that the cuff buffer portion 173 is formed at two portions of the first side (upper side) and the second side (lower side) of the outer periphery of the cuff fixed portion 172, but the specific configuration of the cuff buffer portion 173 is not limited to the above configuration, and the cuff buffer portion 173 may be formed in any configuration according to the embodiment, for example, the cuff buffer portion 173 may be formed only at one of two portions of the first side (upper side) and the second side (lower side) of the outer periphery of the cuff fixed portion 172, and the cuff buffer portion 173 may be formed so as to extend over the entire periphery of the outer periphery of the cuff fixed portion 172 as shown in fig. 8 (a). In the modification shown in fig. 8 (a), the burring buffer portion 173 is formed so as to have a uniform radial width over the entire periphery of the burring fixing portion 172. As shown in the modification example shown in fig. 8 (b), a region where the outer peripheral non-fixed portion 174 is not formed (i.e., a region where the mouth attachment film 130 is fixed to the outer peripheral edge of the flange 171) may be formed in a part of the outer periphery of the flange fixing portion 172.

Next, a modified example of the mouth 170 in which the relief portion 176 is formed in the flange 171 will be described below with reference to fig. 9 to 11.

First, in the example shown in fig. 6 and the like, the description has been given assuming that the flange 171 of the mouth portion 170 is formed in a flat plate shape, but in the modification shown in fig. 9, the flange buffer portion 173 has a receding portion 176 whose outer peripheral side tip portion is located on a side (right side in fig. 9) away from the flange fixing portion 172 in the thickness direction from the mouth attachment film 130.

In the example shown in fig. 9, the relief portion 176 is formed by bending the outer peripheral side of the flange 171 toward the side away from the mouth attachment film 130 (right side in fig. 9), and has a bending surface 176a that is bent so as to approach the outer peripheral side toward the side away from the mouth attachment film 130 (right side in fig. 9) on the side opposite to the mouth attachment film 130. As shown in fig. 9, the curved surface 176a is curved so as to be convex toward the side (left side in fig. 9) facing the mouth attachment film 130.

By forming such a relief portion 176 in the flange 171, as shown in fig. 10, even when the contact portion between the mouth attachment film 130 and the outer peripheral edge of the flange 171 hits the ground or the like when the spouted pouch 110 is dropped, excessive force applied to the mouth attachment film 130 at that portion can be suppressed, and this portion can be suppressed from becoming the starting point of the pouch breakage.

The relief portion 176 may be formed in a ring shape so as to extend over the entire periphery of the outer peripheral portion of the flange 171, or may be formed only in a partial region of the outer peripheral portion of the flange 171. In the case where the relief portion 176 is formed only in a partial region of the outer peripheral portion of the flange 171, the relief portion 176 may be formed in a plurality of portions separated in the circumferential direction.

In addition, the dimensional (width) and positional relationship in the circumferential direction of the flange buffer portion 173 and the evacuation portion 176 may be set so that the flange buffer portion 173 and the evacuation portion 176 overlap in the circumferential direction in at least a partial region of the outer peripheral portion of the flange 171.

In addition, regarding the dimensional relationship between the burring buffer portion 173 and the relief portion 176 in the radial direction, as shown in fig. 11 (a), the dimensional relationship between the burring buffer portion 173 and the relief portion 176 in the radial direction (width) may be set so as to be equal to each other, as shown in fig. 11 (b), the dimensional relationship between the relief portion 176 in the radial direction (width) may be set so as to be larger than the burring buffer portion 173, and, as shown in fig. 11 (c), the dimensional relationship between the relief portion 176 in the radial direction (width) may be set so as to be smaller than the burring buffer portion 173. In the examples shown in fig. 11 (a) to (c), the outer peripheral edge position of the burring buffer 173 coincides with the outer peripheral edge position of the receding portion 176.

In the example shown in fig. 9, the relief portion 176 has a shape in which the outer peripheral side of the flange 171 is curved toward the side away from the mouth attachment film 130 (right side in fig. 9), but the relief portion 176 may be formed in any shape as long as the outer peripheral distal end portion of the relief portion 176 is located on the side away from the mouth attachment film 130 than the flange fixing portion 172 (right side in fig. 9), for example, as shown in fig. 11 (d), the flange 171 may not be curved, but the relief portion 176 may be formed in a shape in which the flange 171 is curved halfway in the radial direction.

As is clear from fig. 1 and 2, the inner film 160 is a flexible resin film having a rectangular shape (or a substantially rectangular shape) with a heat-sealed layer on at least one side thereof, and is disposed in the pouch main body 120 (the liquid-containing portion 121) in a state of being folded into two, and predetermined portions thereof are heat-sealed to the side film 140.

As shown in fig. 2, a plurality of film penetrating portions formed in a hole shape penetrating in the film thickness direction are formed in the inner film 160.

As shown in fig. 1 and 2, a handle hole 129 formed through the portion where the films 140 and 160 are overlapped is formed in the portion where the films 140 and 160 are overlapped in the bag-making seal portion on the top side of the spouted pouch 110, and is used for a user to hold the spouted pouch 110 by putting his or her hand or finger through.

Next, a specific setting of each portion of the spouted pouch 110 will be described below with reference to fig. 4.

First, as shown in fig. 4, the lateral dimension ba1 from the first connection seal 122 (seal base 122 a) to the innermost top 127a of the first shape control seal 127 is preferably set at 6 to 10% of the lateral interval aa between the first connection seals 122 (seal base 122 a) in the lateral direction Xa.

The lateral dimension ba1 is preferably set to 20 to 50% of the lateral dimension ca of the portion 131c located outermost (first joint seal 122 side) in the lateral direction Xa from the first joint seal 122 (seal base 122 a) to the outer peripheral edge of the burring opposing region 131 (burring 171).

By doing so, the operation of the mouth 170 is prevented from being excessively restrained by the mouth attachment film 130, and the effect achieved by forming the first shape control seal portion 127 (the effect of making the mouth attachment film 130 near the outer periphery of the flange 171 deep toward the inside of the pouch, the effect of relaxing the tension of the mouth attachment film 130 near the outer periphery of the flange 171, the effect of adjusting the inclination of the flange 171) can be satisfactorily obtained.

Further, as shown in fig. 4, the lateral dimension ba2 from the first connecting seal 122 (seal base 122 a) to the innermost top 128a of the second shape control seal 128 is preferably set at 4 to 10% of the lateral interval aa.

The lateral dimension ba2 is preferably set to 10 to 50% of the lateral dimension ca.

By doing so, the operation of excessively restricting the mouth 170 by the mouth attachment film 130 can be avoided, and the effect achieved by forming the second shape control seal 128 (the effect of making the mouth attachment film 130 near the outer periphery of the flange 171 deep toward the inside of the pouch, the effect of relaxing the tension of the mouth attachment film 130 near the outer periphery of the flange 171, the effect of adjusting the inclination of the flange 171) can be well obtained.

The lateral dimension ba1 is preferably set to be equal to or greater than the lateral dimension ba 2.

The lateral dimension ba2 is preferably set to 30% or more of the lateral dimension ba 1.

By setting in this manner, the inclination of the mouth 170 can be favorably adjusted, that is, the inclination of the mouth 170 to the first side (upper side) or the second side (lower side) in the longitudinal direction Ya can be favorably adjusted.

Further, as shown in fig. 4, the longitudinal position of the innermost top portion 127a of the first shape control seal portion 127 (the longitudinal position of the end portion of the second side of the innermost top portion 127a in the case where the innermost top portion 127a is formed to have a length in the longitudinal direction Ya) is preferably set to a position 131d located closest to the first side (upper side) in the longitudinal direction Ya from the outer peripheral edge of the burring opposing region 131 (burring 171) within a range of ±10mm in the longitudinal direction Ya.

By setting in this manner, the state of the mouth attachment film 130 can be adjusted so that the mouth attachment film 130 near the portion 131d is deep toward the inside of the pouch, and the tension of the mouth attachment film 130 near the portion 131d can be relaxed. From the viewpoint of relaxing the tension of the mouth attachment film 130 in the vicinity of the above-described portion 131d, it is preferable that the longitudinal position of the innermost top portion 127a of the first shape control seal portion 127 is set to be offset from the longitudinal position of the above-described portion 131d to either one of the first side (upper side) or the second side (lower side).

As shown in fig. 4, the longitudinal position of the end (lower end) of the second side (lower side) of the first shape control seal portion 127 (second inner edge portion 127 c) is preferably set to a position laterally of the burring opposing region 131 (burring 171) in the lateral direction Xa, is preferably set to a position within ±10mm in the longitudinal direction Ya from the central position in the longitudinal direction Ya of the burring opposing region 131 (burring 171), and is preferably set to coincide with the central position in the longitudinal direction Ya of the burring opposing region 131 (burring 171). By setting in this manner, at the point B shown in fig. 5, when the spout pouch 110 is dropped or the like, the spout attachment film 130 (the first connecting seal 122) is folded around the lower end portion of the first shape control seal portion 127 (the second inner edge portion 127 c) on both sides of the lateral direction Xa, and the spout 170 is rotated (tilted) toward the second side so as to pass through the flange opposing region 131 (the flange 171) around the axis L extending in the lateral direction Xa, thereby guiding the deformation of the spout attachment film 130.

In this case, in order to guide the mouth attachment film 130 to the state shown in fig. 5b, it is preferable that the longitudinal position of the end (upper end) of the first side (upper side) of the second shape control seal portion 128 (the first inner edge portion 128 b) is set to be lower than the central position in the longitudinal direction Ya of the burring opposing region 131 (the burring 171). By setting in this manner, as shown in fig. 5 (b), the first connecting seal 122 in the vicinity of the second shape control seal portion 128 can be guided so as to be closer to the inside in the lateral direction Xa, and the mouth 170 can be rotated (tilted) toward the second side about the axis La. At this time, at the position D shown in fig. 5, the mouth attachment film 130 (the first connecting seal 122) is bent from the lower end portions of the second shape control seal portions 128 (the second inner edge portions 128 c) on both sides in the lateral direction Xa. Further, in order to guide the mouth 170 so as to rotate (tilt) toward the second side about the axis L, as shown in fig. 5 a, it is more preferable that the longitudinal position of the end (upper end) of the first side (upper side) of the second shape control seal portion 128 (first inner edge portion 128 b) be set to a position located laterally of the burring opposing region 131 (second opposing region 131 b) in the lateral direction Xa.

Further, by guiding the mouth attachment film 130 and the mouth 170 to the state shown in fig. 5 (b) when the spouted pouch is dropped or the like, the mouth 170 is prevented from being retracted inside the pouch, and a strong force is applied to the mouth 170 by contact with the ground or the like.

Further, as shown in fig. 4, a longitudinal dimension sa (a longitudinal dimension sa of the first inner side edge portion 127 b) from the innermost top portion 127a of the first shape control seal portion 127 to an end portion (an upper end) of the first side (an upper side) of the first shape control seal portion 127 (the first inner side edge portion 127 b) is preferably set to be larger than a longitudinal dimension ta (a longitudinal dimension ta of the second inner side edge portion 127 c) from the innermost top portion 127a of the first shape control seal portion 127 to an end portion (a lower end) of the second side (a lower side) of the first shape control seal portion 127 (the second inner side edge portion 127 c).

Further, as shown in fig. 4, the longitudinal dimension sa and the lateral dimension ba1 are preferably set so that an angle between a virtual line connecting an end (upper end) of a first side (upper side) of the first shape control seal portion 127 (the first inner side edge portion 127 b) and the first connection seal 22 from an innermost top portion 127a of the first shape control seal portion 127 (the innermost top portion 127a in the case where the innermost top portion 127a is formed to have a length in the longitudinal direction Ya) is 5 to 10 °.

By setting in this manner, the formation of a portion that is likely to break the bag in the vicinity of the first connection seal 122 of the mouth attachment film 130 can be suppressed.

Further, as shown in fig. 4, the longitudinal position of the innermost top portion 128a of the second shape control seal portion 128 (the longitudinal position of the end portion of the first side of the innermost top portion 128a in the case where the innermost top portion 127a is formed to have a length in the longitudinal direction Ya) is preferably set to a range of ±5mm in the longitudinal direction Ya from the longitudinal position of the portion 131e of the outer peripheral edge of the burring opposing region 131 (burring 171) that is located closest to the second side (lower side) in the longitudinal direction Ya (or the portion of the outer peripheral edge of the burring securing portion 172 that is located closest to the second side in the longitudinal direction Ya).

By setting in this manner, the state of the mouth attachment film 130 can be adjusted so that the mouth attachment film 130 near the portion 131e is deep toward the inside of the pouch, and the tension of the mouth attachment film 130 near the portion 131e can be relaxed. From the viewpoint of relaxing the tension of the mouth attachment film 130 in the vicinity of the above-described portion 131e, it is preferable that the longitudinal position of the innermost top portion 128a of the second shape control seal portion 128 is set to be offset from the longitudinal position of the above-described portion 131e to either one of the first side (upper side) or the second side (lower side).

Further, as described above, the mouth attachment film 130 and the mouth 170 can be smoothly guided to the state shown in fig. 5 (b) described above by setting the longitudinal position of the innermost top portion 128a of the second shape control seal portion 128 to a range of ±5mm in the longitudinal direction Ya from the portion 131 e.

As shown in fig. 4, the longitudinal position of the end (lower end) of the second side (lower side) of the second shape control seal portion 128 (second inner side edge portion 128 c) is preferably set closer to the first side (upper side) than the second inclined portion 122c of the first connection seal 122.

By doing so, the second shape control seal 128 can be prevented from affecting the shape of the pouch bottom 120 a. That is, when the pouch 110 with mouth is placed on the placement surface, the second inclined portion 122c becomes a portion constituting the pouch bottom 120a, but the second shape control seal portion 128 can be set on the first side (upper side) than the second inclined portion 122c to avoid the second shape control seal portion 128 from affecting the shape of the pouch bottom 120 a.

The embodiments of the present invention have been described in detail above, but the present invention is not limited to the above embodiments, and various design changes may be made without departing from the present invention described in the claims. The pouch 110 with a mouth may be formed by arbitrarily combining the respective configurations of the above-described embodiment and the modification described later.

For example, in the above-described embodiments, the description has been given of the use of the pouch 110 with a mouth accommodated in an outer case (not shown) at the time of use, display, and transportation, and the pouch 110 with a mouth itself may be used or displayed and transported without being accommodated in the outer case (not shown).

Further, the specific embodiments of the films 130, 140, 150, 160 may be any layers formed by laminating a single film or a heat-welded layer of the heat-welded layer, as long as the layers have heat-weldability on at least one side, such as an olefin (e.g., low density polyethylene or polypropylene) and a polyester (e.g., PET (polybutylene terephthalate)). The raw materials constituting the laminate may be optionally formed by laminating a polyester such as PET or PBT (polybutylene terephthalate), polypropylene, polyamide, polyethylene, aluminum foil, or the like, which are known per se.

In the above-described embodiment, the pouch body 120 is described as being formed of four films 130, 140, 150, but the specific configuration of the pouch body 120 such as the number of films constituting the pouch body 120 is not limited to the above-described configuration, and for example, a film for lining the bottom may be separately provided at a position corresponding to the pouch bottom 120 a.

Further, the inner film 160 may not be provided.

In the above-described embodiment, the spouted pouch 110 is configured as a large-capacity pouch having a capacity of 2 to 5L, and the spout 170 is also configured as a large spout having an outer diameter of 50 to 70mm of the flange 171, but the sizes of the spouted pouch 110 and the spout 170 are not limited thereto and may be arbitrarily set according to the embodiment.

In the above-described embodiment, the mouth attachment film 130 to which the mouth 170 is attached is described as a lining film constituting the flap portion (side folded portion) of the pouch of the lateral side folded type, but the specific embodiment of the mouth attachment film 130 is not limited thereto, and for example, the mouth attachment film 130 may be a lining film disposed on the top or bottom of the pouch, or the mouth attachment film 130 may be a film other than a lining film.

In the above-described embodiment, the shape control seals 127 and 128 are described as being continuously formed in the first connecting seal 122, but the shape control seals 127 and 128 may be formed independently (at a distant position) from the first connecting seal 122.

In the above-described embodiment, it was described that the first shape control seal portions 127 are formed on the respective sides of the burring opposing region 131, but the first shape control seal portions 127 may be formed on only one of the sides of the burring opposing region 131 in the lateral direction Xa. In addition, similarly, the second shape control seal portion 128 may be formed only on one of the both sides in the lateral direction Xa of the burring opposing region 131.

In the above-described embodiment (and modification), as shown in fig. 3 and the like, the shape control seal portions 127 and 128 on both sides in the lateral direction Xa are formed symmetrically (left-right symmetry) with respect to a virtual line extending in the longitudinal direction Ya in the center of the lateral direction Xa of the mouth attachment film 130.

Similarly, the first connection seals 122 on both sides in the lateral direction Xa are also formed to be line-symmetrical (left-right-symmetrical) with respect to the virtual line, but are not limited thereto.

In the above embodiment, the first shape control seal portion 127 and the second shape control seal portion 128 were described as being formed, but only the first shape control seal portion 127 may be formed without forming the second shape control seal portion 128. In the case where only the first shape control seal portion 127 is formed, the dimensional relationship of the respective portions associated with the first shape control seal portion 127 is the same as that described above with reference to fig. 4. In addition, the first shape control seal portion 127 may not be formed, and only the second shape control seal portion 128 may be formed. In the case where only the second shape control seal portion 128 is formed, the dimensional relationship of the portions associated with the second shape control seal portion 128 is the same as that described above with reference to fig. 4.

In the above-described embodiment, the description has been given assuming that the flange 171 is formed in a disc shape having a circular outer peripheral edge, but the specific shape of the flange 171 may be any shape such as a shape having an outer peripheral edge other than a circular shape such as a rectangular shape or a polygonal shape.

In the above embodiment, the description has been given assuming that the flange 171 is fixed to the inner side surface of the mouth attachment film 130, but the flange 171 may be fixed to the outer side surface of the mouth attachment film 130.

The flange 171 may be fixed to the mouth attachment film 130 by any method such as bonding, other than heat welding.

In the above-described embodiment, the description has been given assuming that the flange 171 is provided with the flange buffer 173, but the fastening of the flange 171 to the mouth attachment film 130 may be any, or the flange buffer 173 may not be provided in the flange 171, and for example, the entire region of the flange 171 may be fastened to the mouth attachment film 130.

In the above-described embodiment, the first shape control seal portion 127 and the second shape control seal portion 128 are described as being formed in the first connecting seal 122, but these shape control seal portions 127 and 128 may not be formed.

In the present specification, terms such as "top", "bottom", "side", and the like are used to indicate up and down, but these terms do not limit the direction in which the spouted pouch 110 is placed during display, transportation, and the like, and for example, the spouted pouch 110 may be placed on a placement surface with the side and top of the spouted pouch 110 facing downward during display, transportation, and the like.

Next, a description will be given of a spouted pouch 210 as an embodiment of the present invention, based on the drawings.

The spouted pouch 210 accommodates a content liquid such as drinking water and a liquid detergent, and is configured such that the content liquid is poured out from a spout 280 attached to a side surface of the pouch body 220, as shown in fig. 12 and 18.

As shown in fig. 12, the spouted pouch 210 has: a pouch main body 220 formed in a pouch shape by heat-welding flexible films 230, 240, 250, 260 to form a sealing portion for making a pouch; an inner film 270 disposed within the pouch body 220; and a mouth 280 attached to the pouch body 220.

The pouch main body 220 is configured as a so-called lateral side-folded pouch having flaps formed on both side portions, and includes, as shown in fig. 12 and 13: the front film 230 and the back film 240 are disposed to face each other in the front-back direction Xb via the content liquid accommodating portion 221; a side edge film 250 disposed between the front film 230 and the back film 240 on one side of the pouch, and heat-sealed to the front film 230 and the back film 240 by a first edge seal 222; and a second liner film 260 disposed opposite to the side film 250 in the front-rear direction Zb through the content liquid containing portion 221, and heat-sealed to the front film 230 and the back film 240 via a second edge seal 223 at the other side of the pouch side.

Each of the films 230, 240, 250, 260, 270 is formed of a resin film having a heat-seal layer on at least one side thereof, and is disposed so that the heat-seal layers face each other at a portion where they are heat-sealed to each other.

In fig. 13 and the like, the heat-sealed areas of the films 230, 240, 250, 260, 270 are shown as being filled with the heat-sealed material.

As shown in fig. 12 and 13, the pouch main body 220 includes: a first edge seal 222 thermally welding both lateral sides of the side film 250 to the films 230, 240; a second edge seal 223 thermally welding both lateral sides of the second liner film 260 to the films 230, 240; a top seal 224 thermally welding the films 230, 240, 260 at positions corresponding to the top of the pouch body 220 facing the bottom seal 225 through the content liquid accommodating portion 221; a bottom seal 225 heat-welding the films 230, 240, 260 at positions corresponding to the pouch bottom 220a of the pouch body 220; and an intermediate seal 226 thermally welding the films 230, 240 to the inner film 270. These seals 222 to 226 constitute sealing portions for bag making.

Further, a portion formed by partially removing the second liner film 260 is formed at a predetermined portion (for example, ab portion shown in fig. 12) of the side portion of the pouch main body 220 where the flap portion is formed, and the films 230 and 240 are heat-welded to each other. This prevents separation between the films 230 and 240 at the predetermined portion (for example, portion a shown in fig. 12).

As shown in fig. 14, the side film 250 includes: a front side sealing region 251 thermally welded to the front side film 230 at the first edge seal 222; a backside seal region 252 thermally welded to the backside film 240 at the first edge seal 222; and a non-sealing region 253, which is a region inside the front side sealing region 251 and the back side sealing region 252.

As shown in fig. 14, the non-sealing region 253 has a front side outer edge 254 as a boundary with the front side sealing region 251 and a back side outer edge 255 as a boundary with the back side sealing region 252.

The side film 250 is formed to be line-symmetrical (laterally symmetrical) with respect to a virtual line extending in the up-down direction Yb at the center of the front-back direction Xb of the side film 250, in other words, the front side outer edge 254 and the back side outer edge 255 are formed to be line-symmetrical (laterally symmetrical) with respect to the virtual line.

As shown in fig. 14, the front side outer edge 254 and the back side outer edge 255 each have: the base edge portions 254a, 255a are disposed apart from each other in the front-back direction Xb; lower side inclined edge portions 254b, 255b extending from lower ends of the base edge portions 254a, 255a to a lower end connecting portion 253a connecting lower ends of the front side outer edge 254 and the back side outer edge 255 to each other; upper side inclined edge portions 254c, 255c extend from upper ends of the base edge portions 254a, 255a to an upper end connecting portion 253b connecting upper ends of the front side outer edge 254 and the back side outer edge 255 to each other.

As shown in fig. 14, the base edge portions 254a, 255a are formed to extend linearly in the up-down direction Yb.

As shown in fig. 14, the lower side inclined edges 254b, 255b extend linearly obliquely in the up-down direction Yb so as to approach inward in the front-back direction Xb (in the present embodiment, at an oblique angle of 45 °) as going downward.

The upper inclined edge portions 254c, 255c are formed of at least two inclined portions having different inclination angles with respect to the up-down direction Yb, and in the present embodiment, as shown in fig. 15, the upper inclined edge portions include: the gently inclined portions 254d, 255d connecting the upper ends of the base edges 254a, 255a with the upper ends of the base edges 254a, 255a at positions above and inward in the front-back direction Xb; and steep portions 254e and 255e, and upper ends of the gentle portions 254d and 255d are connected to the upper end connecting portion 253 b.

In the example shown in fig. 15, each of the gently inclined portions 254d, 255d is formed of one straight portion extending obliquely in the up-down direction Yb so as to approach the inside in the front-back direction Xb as it goes upward, and each of the gently inclined portions 254e, 255e is formed of one straight portion extending obliquely in the up-down direction Yb so as to approach the inside in the front-back direction Xb as it goes upward (in the present embodiment, at an inclination angle of 45 °).

As shown in fig. 15, a first virtual line Lb1 passing through the upper and lower ends of the gently inclined portions 254d, 255d extends obliquely in the up-down direction Yb so as to approach inward in the front-back direction Xb as it goes upward.

As shown in fig. 15, the second virtual line Lb2 passing through the upper ends and the lower ends of the steeply inclined portions 254e, 255e extends obliquely in the up-down direction Yb so as to approach inward in the front-back direction Xb as it goes upward.

As shown in fig. 15, the inclination angle θ1 of the first virtual line Lb1 with respect to the up-down direction Yb is smaller than the inclination angle θ2 of the second virtual line Lb2 with respect to the up-down direction Yb, in other words, the degree of approach of the second virtual line Lb2 (the steeply inclined portions 254e, 255 e) to the inside of the front-back direction Xb is stronger (larger) as going upward than the first virtual line Lb1 (the gently inclined portions 254d, 255 d).

As shown in fig. 14 and 15, the side edge film 250 includes a cuff opposing region 256 in which the cuffs 281 of the nozzle 280 are disposed to face each other. In the present embodiment, the burring opposing region 256 is formed in a circular ring shape having a circular outer peripheral edge.

The side edge film 250 has a circular through hole 257 for the spout portion formed to penetrate in the film thickness direction so as to allow the spout portion 282 of the spout portion 280 to be inserted therethrough.

The mouth portion 280 is formed of synthetic resin or the like, and is attached to the pouch main body 220 to function as an outlet of the content liquid, and as shown in fig. 12 and 18, includes: a cuff 281 disposed opposite the side film 250; the injection cylinder portion 282 having an injection hole 282a extending perpendicularly to the disk-shaped flange 281; and a cap 283 detachably fitted to the tip of the injection cylinder 282.

In the present embodiment, the flange 281 is formed as a disk-shaped (annular) portion having a circular outer peripheral edge (flange outer peripheral edge) and having a through hole formed in the center thereof, and is disposed inside the pouch body 220, and at least a part thereof is fixedly connected to the inner surface of the side wall film 250 by heat welding.

In fig. 12, only the flange 281 of the spout 280 is shown, and as shown in fig. 18, most of the spout 280 such as the pouring tube 282 and the cap 283 are disposed outside the pouch body 220.

As shown in fig. 15, at least a part (most in the example shown in fig. 15) of the flange 281 (flange facing region 256) including the center of the flange 281 (flange facing region 256) is disposed to face the region between the upper side inclined edge portion 254c of the front side outer edge 254 and the upper side inclined edge portion 255c of the back side outer edge 255, more specifically, the region between the gently inclined portion 254d of the front side outer edge 254 and the gently inclined portion 255d of the back side outer edge 255.

As shown in fig. 15, the cuff 281 (cuff facing region 256) is disposed at the center of the side edge film 250 in the front-back direction Xb, and the distance between the front side outer edge 254 and the outer edge of the cuff 281 (cuff facing region 256) in the front-back direction Xb is equal to the distance between the back side outer edge 255 and the outer edge of the cuff 281 (cuff facing region 256).

As can be seen from fig. 12, the region between the upper side inclined edge portion 254c of the front side outer edge 254 to which (at least a part of) the flange 281 is attached and the upper side inclined edge portion 255c of the back side outer edge 255 is a portion inclined so as to approach the inside of the pouch main body 220 in the front-rear direction Zb as going upward when the pouch bottom 220a is viewed in the front-rear direction Xb in a state in which the pouch with the spout 210 is placed on the placement surface. Accordingly, as is clear from fig. 12 and 18, when the spouted pouch 210 is placed on the placement surface and viewed in the front-back direction Xb, the spout tube 282 of the spout 280 attached to the region is inclined obliquely upward with respect to the up-down direction Yb (and the front-back direction Zb), in other words, is inclined so as to approach the outside of the pouch body 220 in the front-back direction Zb as it goes upward.

As is apparent from fig. 12 and 13, the inner film 270 is a resin film having a rectangular shape (or substantially rectangular shape) with a heat-sealed layer on at least one side thereof and being formed into a flexible shape, and is disposed in the pouch main body 220 (the liquid-containing portion 221) in a state of being folded into two, and predetermined portions thereof are heat-sealed to the films 230 and 240.

As shown in fig. 13, a plurality of film penetrating portions formed in a hole shape penetrating in the film thickness direction are formed in the inner film 270.

As shown in fig. 12 and 13, a handle hole 227 formed through the portion where the films 230, 240, 260 are overlapped is formed in the portion (top seal 224) where the films 230, 240, 260 are overlapped in the bag-making seal portion on the top side of the spouted pouch 210, and is used for a user to hold the spouted pouch 210 by hand or finger.

In fig. 13, it is assumed that the handle hole 227 is formed without heat welding between the films 230, 240, 260 for the sake of technical understanding, but in the present embodiment, the handle hole 227 is formed by performing punching processing on a predetermined portion after heat welding between the films 230, 240, 260.

Here, as shown in fig. 18 a, when the spout pouch 210 containing the content liquid in the content liquid containing portion 221 is lifted up with the top seal 224 (pouch top side) having the handle hole 227 formed in an unopened state (state in which the content liquid has not yet been injected) and supported (gripped), and the content liquid containing portion 221 containing a content liquid having a volume equal to or smaller than the volume of the lower portion of the virtual line Lb3 obtained by extending the lower end edge of the inner peripheral surface of the injection hole 282a of the spout 280 (specifically, the lower end edge of the inner peripheral surface of the injection hole 282a on the tip end side of the injection tube 282) in the extending direction of the lower end edge of the inner peripheral surface of the injection hole 282a of the spout portion 280 is contained in the content liquid containing portion 221. Fig. 18 (a) shows a state in which the content liquid storage unit 221 stores the same amount of content liquid as the capacity of the lower portion of the virtual line Lb3 in the content liquid storage unit 221.

In this way, by setting the amount of the content liquid stored in the content liquid storage 221, when the spout pouch 210 is lifted up so that the spout portion 282 of the spout 280 is inclined in the lateral direction as in the posture shown in fig. 18 (a) (e.g., the top side of the pouch in which the handle hole 227 is formed is gripped), the spout portion 282 can be extended in the horizontal direction or the spout portion 282 can be inclined downward (i.e., a state inclined downward than the horizontal direction), and thus, the so-called leakage of the content liquid shown in fig. 18 (b), that is, the phenomenon that the content liquid leaking from the top end of the spout portion 282 flows along the lower surface of the outer peripheral surface of the spout portion 282, which occurs when the spout portion 282 of the spout portion 280 is inclined upward (i.e., a state inclined upward than the horizontal direction) in the state where the content liquid is ended, can be avoided.

In addition, from the viewpoint of suppressing such leakage of the content liquid and increasing the capacity of the content liquid contained in the pouch main body 220, it is desirable to adjust the extending direction (the direction in which the virtual line Lb3 extends) of the spout portion 282 of the spout portion 280 to be downward (to be close to the direction perpendicular to the up-down direction Yb) by decreasing the inclination angle of the region (the region between the gently inclined portions 254d, 255 d) of the side wall film 250 to which the flange 281 is attached with respect to the up-down direction Yb, and decreasing the inclination angle of the pouch main body 220 with respect to the flange 281 of the up-down direction Yb.

Next, a modified example of the upper side inclined edge portions 254c, 255c of the side wall film 250 will be described with reference to fig. 16 and 17. In the modified example described below, the configuration other than the configuration of a part is identical to that of the above-described embodiment, and therefore, the description thereof will be omitted for the configuration other than the different point.

First, in the example shown in fig. 15 described above, the gently inclined portions 254d and 255d are described as being constituted by one straight line portion extending obliquely in the up-down direction Yb, but the specific configuration of the gently inclined portions 254d and 255d is not limited to the above configuration, and may be constituted by at least one straight line portion, at least one curved line portion, and a combination of these.

In the example shown in fig. 16, the gently inclined portions 254d, 255d are constituted by a plurality of (three) straight portions, specifically, a first straight portion extending obliquely in the up-down direction Yb so as to be located inward in the up-down direction Xb from the upper ends of the base edge portions 254a, 255a, a second straight portion extending obliquely in the up-down direction Yb from the upper ends of the first straight portion, and a third straight portion extending obliquely in the up-down direction Yb so as to be located inward in the up-down direction Xb from the upper ends of the second straight portion.

In the example shown in fig. 17, the gently inclined portions 254d, 255d are constituted by a plurality of (three) straight portions, specifically, a first straight portion extending obliquely in the up-down direction Yb so as to be located inward in the front-back direction Xb as it goes upward from the upper ends of the base edge portions 254a, 255a, a second straight portion extending obliquely in the up-down direction Yb so as to be located outward in the front-back direction Xb as it goes upward from the upper ends of the first straight portion, and a third straight portion extending obliquely in the up-down direction Yb so as to be located inward in the front-back direction Xb as it goes upward from the upper ends of the second straight portion.

As is clear from the examples shown in fig. 16 and 17, the straight line portions (or curved line portions) constituting the gently inclined portions 254d and 255d may be any portions that extend obliquely in the up-down direction Yb so as to approach the inside in the front-back direction Xb as it goes upward, extend obliquely in the up-down direction Yb so as to approach the outside in the front-back direction Xb as it goes upward, or extend obliquely in the up-down direction Yb as it goes upward.

In the example shown in fig. 15 to 17, the steeply inclined portions 254e and 255e are also constituted by one straight line portion extending obliquely in the up-down direction Yb, but the specific configuration of the steeply inclined portions 254e and 255e is not limited to the above, and may be constituted by at least one straight line portion, at least one curved line portion, or a combination of these.

In the example shown in fig. 17, at least one (both in the example shown in fig. 17) of the front side seal region 251 and the back side seal region 252 has control seal portions 251a and 252a located inside the first virtual line L1 in the front-back direction Xb.

As shown in fig. 17, the control seal portions 251a and 252a are formed so as to have a region located between the lower half of the flange opposing region 256 (flange 281) and the front side seal region 251 or the back side seal region 252 in the front-back direction Xb, and not to have a portion located above the center of the flange opposing region 256 (flange 281) in the up-down direction Yb.

As shown in fig. 17, a portion of the control seal portions 251a and 252a located closest to the inner side in the front-back direction Xb is located in a region between the lower half of the flange opposing region 256 (flange 281) and the front seal region 251 or the back seal region 252 in the front-back direction Xb.

As shown in fig. 17, the control seal portions 251a and 252a have portions located below the burring opposing region 256 (burring 281).

The embodiments of the present invention have been described in detail above, but the present invention is not limited to the above embodiments, and various design changes may be made without departing from the present invention described in the claims. The spouted pouch 210 may be formed by arbitrarily combining the respective configurations of the above-described embodiment and the modification described later.

For example, the pouch 210 with a mouth may be housed in an outer case (not shown) for use, display, and transportation, or may not be housed in an outer case (not shown), and the pouch 210 with a mouth itself may be used, or may be displayed and transported.

Further, the specific embodiments of the films 230, 240, 250, 260, 270 may be any layers that are laminated on a single film or a heat-welded layer of the heat-welded layer, as long as they have a heat-weldability layer of an olefin such as low-density polyethylene or polypropylene, a polyester such as PET (polybutylene terephthalate), or the like on at least one side. The raw materials constituting the laminate may be optionally formed by laminating a polyester such as PET or PBT (polybutylene terephthalate), polypropylene, polyamide, polyethylene, aluminum foil, or the like, which are known per se.

In the above-described embodiment, the pouch body 220 is described as being formed of four films 230, 240, 250, 260, but the specific configuration of the pouch body 220 such as the number of films constituting the pouch body 220 is not limited to the above-described configuration, and for example, a film for lining the bottom may be separately provided at a position corresponding to the pouch bottom 220 a.

In addition, the inner film 270 may not be provided.

In the above-described embodiment, the spouted pouch 210 is configured as a large-capacity pouch having a capacity of 2 to 5L, and the spout 280 is also configured as a large spout having an outer diameter of 50 to 70mm of the flange 281, but the sizes of the spouted pouch 210 and the spout 280 are not limited thereto and may be arbitrarily set according to the embodiment.

In the above embodiment, the front side outer edge 254 and the back side outer edge 255 are assumed to be formed to be line symmetrical (bilateral symmetry) with respect to a virtual line extending in the up-down direction Yb at the center of the front-back direction Xb of the side edge film 250, but may be formed to be asymmetric in the left-right direction between the front side outer edge 254 and the back side outer edge 255.

In the above-described embodiment, the control seal portions 251a and 252a are described as being formed continuously in the seal regions 251 and 252, but the control seal portions 251a and 252a may be formed independently (at a distant position) from the seal regions 251 and 252.

In the above-described embodiment, the flange 281 is assumed to be formed in a disk shape having a circular outer peripheral edge, but the specific shape of the flange 281 may be any shape such as a shape having an outer peripheral edge (flange outer peripheral edge) other than a circular shape such as a rectangular shape or a polygonal shape.

In the above embodiment, the flange 281 is fixedly attached to the inner surface of the side film 250, but the flange 281 may be fixedly attached to the outer surface of the side film 250.

The flange 281 may be bonded to the side film 250 by any method other than heat welding.

In the present specification, terms such as "top", "bottom", "side", and the like are used to indicate up and down, but these terms do not limit the direction in which the spouted pouch 210 is placed during display, transportation, and the like, and for example, the spouted pouch 210 may be placed on a placement surface with the side and top of the spouted pouch 210 facing downward during display, transportation, and the like.

In the above-described embodiment, the description has been given of the content liquid pouring in a state where the pouch 210 with the mouth is lifted by gripping the top side of the pouch, but the specific scheme of the content liquid pouring is not limited to the above-described scheme, and for example, the content liquid pouring may be performed in a state where the pouch 210 with the mouth is lifted by supporting or gripping a portion other than the top of the pouch, such as the pouch bottom 220a, or the content liquid pouring may be performed in a state where the pouch 210 with the mouth is placed on the placement surface.

Description of the reference numerals

110. 210: A pouch with a mouth;

120. 220: a pouch body;

120a, 220a: the bottom of the pouch;

121. 221: a content liquid containing section;

122: a first connection seal (connection seal);

222: a first edge seal (edge seal);

122a: a seal base;

122b: a first inclined portion;

122c: a second inclined portion;

123: a second connection seal;

223: a second edge seal;

123a: a seal base;

123b: a first inclined portion;

123c: a second inclined portion;

124. 224: a top seal;

125. 225: a bottom seal;

126. 226: an intermediate seal;

127: a first shape control seal;

227: a handle hole;

127a: an innermost top portion;

127b: a first edge portion;

127c: a second edge portion;

128: a second shape control seal;

128a: an innermost top portion;

128b: a first edge portion;

128c: a second edge portion;

129: a handle hole;

130: a mouth attachment membrane;

230: a surface film;

131: a burring opposing region;

131a: a first opposing region;

131b: a second opposing region;

132: a through hole for a mouth;

140: a side film;

240: a backside film;

150: a second film;

250: a side wall film;

251: a front side seal area;

251a: a control seal portion;

252: a backside seal region;

252a: a control seal portion;

253: a non-sealing region;

253a: a lower end connecting part;

253b: an upper end connecting part;

254: a front outer edge;

254a: a base edge portion;

254b: a lower inclined edge portion;

254c: an upper inclined edge portion;

254d: a gently inclined portion;

254e: a steeply inclined portion;

255: a backside outer edge;

255a: a base edge portion;

255b: a lower inclined edge portion;

255c: an upper inclined edge portion;

255d: a gently inclined portion;

255e: a steeply inclined portion;

256: a burring opposing region;

257: a through hole for a mouth;

260: a second film;

160. 270: an inner film;

170. 280: a mouth;

171. 281: flanging;

172: a flange fixing part;

173: a flange buffer part;

173a: a wide width portion;

174: the outer peripheral side is not fixedly connected with the part;

175: the inner peripheral side is not fixedly connected with the part;

176: a retreat portion;

176a: a curved surface;

282: a pouring-out cylinder part;

282a: a pouring hole;

283: a cover;

Xa: transverse direction;

Ya: longitudinal direction;

Lb1: a first virtual line;

lb2: a second virtual line;

Xb: the exterior and interior directions;

Yb: up and down direction;

Zb: in the front-rear direction.

Claims (26)

1. A pouch with mouth, which is a pouch with mouth attached to a pouch body, characterized in that,

The pouch body has: a mouthpiece attachment film to which the mouthpiece is attached; and a side film connected to the mouth attachment film through connection seals formed at both lateral sides of the mouth attachment film,

The mouth attachment film has a cuff-opposing region in which cuffs of the mouth are disposed in opposition,

The pouch body has a shape control seal formed by welding a portion of the mouth attachment film located laterally inward of the attachment seal to the side Fang Baomo,

The shape control seal portion has a portion located in a region between the burring opposing region and the connecting seal in a lateral direction.

2. The spouted pouch of claim 1 wherein,

The mouth is attached at a position closer to the second side of the first side and the second side in the longitudinal direction than the center in the longitudinal direction of the mouth attachment film,

The burring opposing region has: a first opposing region which is a portion on a first side in the longitudinal direction from the center of the burring opposing region; and a second opposing region which is a portion longitudinally closer to a second side than a center of the burring opposing region,

The pouch body is provided with a first shape control seal as the shape control seal, wherein the first shape control seal has a portion that is located in a region between the first opposing region and the connecting seal in a lateral direction.

3. The spouted pouch according to claim 2 wherein,

The first shape control seal also has a portion that is located laterally in a region between the second opposing region and the connection seal.

4. A spouted pouch according to claim 2 or 3, characterized in that,

The pouch body further has a second shape control seal as the shape control seal, wherein the second shape control seal is formed by welding a portion of the mouth attachment film located laterally inward of the connecting seal and the side Fang Baomo at a second side of the first shape control seal in the longitudinal direction,

The second shape control seal has a portion located in a region laterally between the second opposing region and the connection seal.

5. The spouted pouch of claim 4 wherein,

The first shape control seal portion and the second shape control seal portion each have an innermost top portion located innermost in the lateral direction,

A lateral dimension from the connection seal to the innermost top of the first shape control seal portion is set to be equal to or greater than a lateral dimension from the connection seal to the innermost top of the second shape control seal portion.

6. The spouted pouch according to any of claims 2 to 5 wherein,

The longitudinal position of the end portion on the second side in the longitudinal direction of the first shape control seal portion is set at a position laterally of the burring opposing region.

7. The spouted pouch of claim 1 wherein,

The mouth is attached at a position closer to the second side of the first side and the second side in the longitudinal direction than the center in the longitudinal direction of the mouth attachment film,

The burring opposing region has: a first opposing region which is a portion on a first side in the longitudinal direction from the center of the burring opposing region; and a second opposing region which is a portion longitudinally closer to a second side than a center of the burring opposing region,

The pouch body is provided with a second shape control seal as the shape control seal, wherein the second shape control seal has a portion that is located laterally in a region between the second opposing region and the connection seal.

8. The spouted pouch according to any of claims 1 to 7 wherein,

The shape control seals are formed on both sides of the flange facing region, respectively.

9. The spouted pouch according to any of claims 1 to 8 wherein,

The shape control seal is continuously formed at the connection seal.

10. A spouted pouch, the spouted pouch comprising: a surface film; a backside film; a side film disposed between the front film and the back film at a pouch side, and heat-welded to the front film and the back film by an edge seal; and a mouth portion attached to the side wall film, characterized in that,

The side wall film has: a front side sealing region thermally welded to the front side film at the edge seal; a backside sealing region thermally welded to the backside film at the edge seal; and a non-sealing region which is a region inside the front side sealing region and the back side sealing region,

The non-sealing region has a front side outer edge that borders the front side sealing region and a back side outer edge that borders the back side sealing region,

The front side outer edge and the back side outer edge each have: the base edge parts are arranged in a separated manner in the front-back direction; and an upper side inclined edge portion extending from an upper end of the base edge portion to an upper end connecting portion connecting an upper end of the front side outer edge and an upper end of the back side outer edge to each other,

At least a part of the flange of the mouth is disposed opposite to a region between the upper side inclined edge portion of the front side outer edge and the upper side inclined edge portion of the back side outer edge.

11. The spouted pouch of claim 10 wherein,

The upper inclined edge portion is formed of at least two inclined portions having different inclination angles with respect to the vertical direction.

12. The spouted pouch of claim 11 wherein,

The upper inclined edge portion includes: a gently inclined portion connecting a portion located above and inward in the front-back direction of the upper end of the base edge portion with the upper end of the base edge portion; and a steeply inclined portion connecting an upper end of the gently inclined portion to the upper end connecting portion,

A first virtual line passing through the upper and lower ends of the gently inclined portion extends obliquely in the up-down direction so as to approach inward in the front-back direction as it goes upward,

A second virtual line passing through the upper and lower ends of the steeply inclined portion extends obliquely in the up-down direction so as to approach inward in the front-back direction as it goes upward,

The first virtual line is set to have a smaller inclination angle with respect to the up-down direction than the second virtual line,

At least a part of the flange is disposed opposite to a region between the gently inclined portion of the front side outer edge and the gently inclined portion of the back side outer edge.

13. The spouted pouch of claim 12 wherein,

The side wall film has a cuff opposing region in which the cuffs are disposed in opposition to each other,

At least one of the front side seal region and the back side seal region has a control seal portion located on the inner side in the front-back direction than the first virtual line,

The control seal portion has a portion located in a region between a lower half portion of the burring opposing region and the front side seal region or the back side seal region in the front-back direction.

14. The spouted pouch of claim 13 wherein,

The control seal portion has a portion located below the burring opposing region.

15. The spouted pouch according to any of claims 10 to 14 wherein,

When viewed in the front-back direction in an unopened state, the content liquid container of the spout pouch contains a content liquid having a volume equal to or smaller than a volume of a portion of the content liquid container below a virtual line extending in the extending direction of the lower edge of the inner peripheral surface of the spout hole of the spout.

16. A pouch with mouth, which is a pouch with mouth attached to a pouch body, characterized in that,

The pouch body has a mouth attachment film to which the mouth is attached,

The mouth has a cuff disposed opposite the mouth attachment film,

The flange has: the flanging fixedly-connecting part is fixedly connected with the mouth part attaching film; and a flange buffer portion formed in at least a part of an outer periphery of the flange fixing portion, the flange buffer portion not being fixed to the mouth attachment film.

17. The spouted pouch of claim 16 wherein,

The mouth attachment film has a cuff-opposing region in which the cuffs are disposed in opposition,

The flange buffer portion is a portion whose radial width is formed to be 30 to 80% of the radial width of the flange opposing region at a position where the flange buffer portion is formed.

18. The spouted pouch according to claim 16 or 17 wherein,

The flange buffer portion is a portion whose radial width is 650% or more of the thickness of the mouth attachment film.

19. The spouted pouch according to any of claims 16 to 18 wherein,

The flange buffer part is a part with the radial width of more than 2mm,

The radial width of the flanging fixed connection part is more than 2 mm.

20. The spouted pouch according to any of claims 16 to 19 wherein,

The pouch body also has a side film connected to the mouth attachment film by connection seals formed at both lateral sides of the mouth attachment film,

The mouth is attached at a position closer to the second side of the first side and the second side in the longitudinal direction than the center in the longitudinal direction of the mouth attachment film,

The burring buffer portion is formed at a position including a portion facing the first side in the longitudinal direction at the widthwise center in the outer periphery of the burring fixing portion.

21. The spouted pouch according to any of claims 16 to 20 wherein,

The pouch body also has a side film connected to the mouth attachment film by connection seals formed at both lateral sides of the mouth attachment film,

The mouth is attached at a position closer to the second side of the first side and the second side in the longitudinal direction than the center in the longitudinal direction of the mouth attachment film,

The burring buffer portion is formed at a position including a portion facing the second side in the longitudinal direction at the widthwise center in the outer periphery of the burring fixing portion.

22. The spouted pouch according to claim 20 or 21 wherein,

The flange buffer portion has a wide portion having the widest width in the radial direction in the flange buffer portion,

The wide width portion is formed at a position including a portion facing the first side in the longitudinal direction at the widthwise center in the outer periphery of the burring fixing portion.

23. The spouted pouch according to any of claims 20 to 22 wherein,

The flange buffer portion has a wide portion having the widest width in the radial direction in the flange buffer portion,

The wide width portion is formed at a position including a portion facing the second side in the longitudinal direction at the widthwise center in the outer periphery of the burring fixing portion.

24. The spouted pouch according to any of claims 16 to 23 wherein,

The flange buffer portion has a receding portion at a tip portion on an outer peripheral side thereof on a side away from the mouth attachment film.

25. The spouted pouch of claim 24 wherein,

The retreat portion has a curved surface that curves so as to approach away from the mouth attachment film side as going to the outer peripheral side.

26. The spouted pouch according to any of claims 16 to 25 wherein,

The pouch body also has a side film connected to the mouth attachment film by connection seals formed at both lateral sides of the mouth attachment film,

The mouth attachment film has a cuff-opposing region in which cuffs of the mouth are disposed in opposition,

The pouch body has a first shape control seal formed by welding a portion of the mouth attachment film located laterally inward of the attachment seal to the side Fang Baomo,

The first shape control seal portion has a portion located in a region between the burring opposing region and the connecting seal in a lateral direction.