Spout pouch

Abstract

A spouted pouch is provided to suppress pouch breakage starting near the outer periphery of the pouch body. In the spouted pouch (110), the spout attaching film (130) has a flange opposing region (131) for the flange (171) of the spout (170) to be opposite each other, and the pouch body (120) has shape control seals (127) and (128) formed by fusing the portion of the spout attaching film (130) located on the inner side of the connecting seal (122) in the transverse direction (Xa) with a side film. The shape control seals (127) and (128) have portions located in the region between the flange opposing region (131) and the connecting seal (122) in the transverse direction (Xa).

Description

[0001] This application is a divisional application of the invention patent application with application number 202280063007.0, application date November 17, 2022, and invention title "Small bag with mouth". Technical Field

[0002] This invention relates to a spouted pouch with a spout attached to the main body of the pouch. Background Technology

[0003] Conventionally, as containers for holding liquid contents such as drinking water and liquid detergent, there are known spouted pouches that are made by heat-melting multiple resin films together and have a spout attached to the pouch body as an injection outlet, or spouted pouches that have a spout attached laterally to the side gusset film of the pouch body made by heat-melting multiple films together (for example, see Patent Document 1 and Patent Document 2).

[0004] In addition, as a method for attaching the mouthpiece in such a mouthpiece pouch, the following method is generally known: the flange of the mouthpiece is positioned opposite the mouthpiece attaching film, and the flange is fixed to the mouthpiece attaching film by means of heat fusion or the like.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent Application Publication No. 2012-121611

[0008] Patent Document 2: Japanese Patent Application Publication No. 2020-132177 Summary of the Invention

[0009] The problem that the invention aims to solve

[0010] However, in the existing spout pouches known in Patent Documents 1 and 2, the following problems exist when the spout pouch is dropped: due to the weight of the contents, the film attached to the spout is sometimes damaged near the outer periphery of the flange, resulting in a tear in the pouch body starting from the outer periphery of the flange.

[0011] It is speculated that the tear in the main body of the small bag was caused by the mouthpiece rotating (tilting) relative to the film attached to the mouthpiece when the bag was dropped, thus applying a torque load near the outer periphery of the flange. The outer periphery of the flange, under the applied torque load, was then hit on the ground.

[0012] Furthermore, in the existing spout pouches known in Patent Document 2, in usage schemes such as lifting the pouch to dispense the contents, the spout may sometimes move unexpectedly due to the weight of the contents entering the spout during dispensing. As a result, it is difficult to determine the orientation of the dispensing nozzle and dispensing the contents becomes difficult.

[0013] Therefore, the present invention is an invention that solves these problems, and its object is to provide a spout pouch that improves the ease of dispensing the contents through the spout with a simple structure, and suppresses pouch body breakage starting from near the outer periphery of the folded edge.

[0014] Technical solution

[0015] This invention relates to a small pouch with a spout, comprising a pouch body with a spout attached. The pouch body includes: a spout-attaching film for attaching the spout; and side films connected to the spout-attaching film via connecting seals formed on both lateral sides of the spout-attaching film. The spout-attaching film has a flange-opposing region for the flanges of the spout to be juxtaposed. The pouch body also includes a shape-controlled sealing portion formed by fusing a portion of the spout-attaching film located laterally inward of the connecting seals to the side films. The shape-controlled sealing portion has a portion located laterally between the flange-opposing region and the connecting seals. This invention solves the aforementioned problem.

[0016] Furthermore, a pouch with a spout comprises: a front film; a back film; a side film disposed on the side of the pouch between the front film and the back film, and heat-fused to the front film and the back film by an edge seal; and a spout attached to the side film, wherein the side film has: a front sealing region heat-fused to the front film at the edge seal; a back sealing region heat-fused to the back film at the edge seal; and a non-sealing region, which is the region inside the front sealing region and the back sealing region. The device has a surface outer edge that serves as the boundary with the surface sealing region and a back outer edge that serves as the boundary with the back sealing region. The surface outer edge and the back outer edge each have: a base edge portion that is separately disposed from each other in the surface-inward direction; and an upper inclined edge portion that extends from the upper end of the base edge portion to an upper end connecting portion that connects the upper ends of the surface outer edge and the back outer edge to each other. At least a portion of the flange of the nozzle is disposed opposite each other in the region between the upper inclined edge portion of the surface outer edge and the upper inclined edge portion of the back outer edge, thereby solving the aforementioned problem.

[0017] Furthermore, a spouted pouch is provided, wherein the pouch body has a spout-attaching film for attaching the spout, the spout has a flange disposed opposite to the spout-attaching film, the flange having: a flange fixing portion fixed to the spout-attaching film; and a flange buffer portion formed in at least a portion of the outer periphery of the flange fixing portion, not fixed to the spout-attaching film, thereby solving the aforementioned problem.

[0018] Invention Effects

[0019] According to the invention of this technical solution 1, the small bag body has a shape control sealing part formed by fusing the portion of the mouthpiece film located laterally inside the connecting seal with a side film. The shape control sealing part has a portion located in the area between the flange opposing area and the connecting seal. Thus, by forming the shape control sealing part, the lateral spacing between the sealing parts on both sides is narrower than the peripheral area. As a result, the state of the mouthpiece film can be adjusted so that the mouthpiece film near the outer periphery of the flange, which is prone to tearing, penetrates into the small bag. This makes it less likely for the mouthpiece film near the outer periphery of the flange to hit the ground, and also relaxes the tension of the mouthpiece film near the outer periphery of the flange. Therefore, even if the small bag with the mouthpiece falls, the tearing of the small bag body starting from the outer periphery of the flange can be suppressed.

[0020] According to the invention of technical solutions 2 and 3, the mouthpiece is attached to a position closer to the second side of the first and second sides in the longitudinal direction than the center of the mouthpiece attaching film. The pouch body has a first shape control sealing part as a shape control sealing part, wherein the first shape control sealing part has a portion located in the lateral direction between the first opposing region and the connecting seal. This suppresses pouch body breakage starting from the area near the outer periphery of the flange facing the first side in the longitudinal direction, which is a part prone to breakage, such as when the pouch with the mouthpiece falls. Furthermore, when the mouthpiece is attached closer to the second side than the center of the mouthpiece attaching film in the longitudinal direction, the mouthpiece expands outward due to the weight of the contents, causing the mouthpiece to tilt towards the second side. However, by forming the first shape control sealing part, the tilt of the flange can be adjusted so that the mouthpiece is oriented towards the first side, thus correcting the mouthpiece's posture (or orientation).

[0021] According to the invention of this technical solution 4, the second shape control sealing part has a portion located between the second opposing region and the connecting seal. As a result, not only can bag breakage be suppressed near the portion of the outer periphery of the flange facing the second side in the longitudinal direction, which is a part where bag breakage is likely to occur when the small bag with the spout is dropped, but also by forming the second shape control sealing part, the tilt of the flange can be adjusted so that the spout faces the second side. Therefore, by forming the first shape control sealing part, the spout can be prevented from facing the first side too much, and the posture of the spout can be corrected. In addition, this ensures the design freedom of the first shape control sealing part, such as the lateral width.

[0022] According to the invention of this technical solution 5, the lateral dimension from the connecting seal to the innermost top of the first shape control seal is set to be greater than or equal to the lateral dimension from the connecting seal to the innermost top of the second shape control seal, thereby, by forming the first shape control seal and the second shape control seal, the posture of the mouth can be properly maintained.

[0023] According to the invention of this technical solution 6, the longitudinal position of the end of the second side of the first shape control sealing part in the longitudinal direction is set to the side position of the flange opposing area in the transverse direction. Therefore, when the pouch with the spout is dropped, the spout attaching film and connecting seal can be bent from the vicinity of the end of the second side of the first shape control sealing part. The spout is rotated toward the second side by a transversely extending axis through the flange. Thus, when the pouch with the spout is dropped, the pouch with the spout can be guided to a state in which the spout avoids the inside of the pouch to prevent strong force from being applied to the spout due to contact with the ground or the like.

[0024] According to the invention of this technical solution 7, the small bag body has a second shape control sealing part as a shape control sealing part, wherein the second shape control sealing part has a portion located in the lateral direction between the second opposing region and the connecting seal, thereby suppressing the bag body from the portion near the second side facing the longitudinal direction of the outer periphery of the flange, which is a part that is prone to bag breakage, such as when the small bag with the spout falls.

[0025] According to the invention of this technical solution 8, the shape control sealing parts are respectively formed on both sides of the opposing area of ​​the flange, thereby effectively preventing the bag from breaking by the small bag body starting from the vicinity of the outer periphery of the flange.

[0026] According to the invention of this technical solution 9, the shape control seal is continuously formed on the connecting seal, thereby preventing the contents that are easily generated when the shape control seal is formed independently of the connecting seal from remaining between the connecting seal and the shape control seal.

[0027] According to the invention of this technical solution 10, at least a portion of the flange of the mouthpiece is arranged opposite to the area between the upper inclined edge of the side film. This allows for the narrowing of the gap between the inner edge of the sealing area (edge ​​seal) of the side film and the outer periphery of the flange without affecting the self-standing of the pouch body, thus constraining the movement of the mouthpiece. Therefore, the orientation of the dispensing portion of the mouthpiece can be accurately determined, improving the ease of dispensing the contents through the mouthpiece. In other words, by arranging the flange of the mouthpiece in the area between the upper inclined edges, which has a narrower lateral width in the inward and outward directions compared to the area between the base edges, not only is the gap between the inner edge of the sealing area (edge ​​seal) of the side film and the outer periphery of the flange narrowed, but the area between the upper inclined edges, being the portion located above the side film when the pouch with the mouthpiece is placed on the mounting surface, is a part where even design changes to the edge shape will not affect the self-standing of the pouch body. Therefore, the design of the edge shape can be freely modified to effectively constrain the movement of the mouthpiece.

[0028] Furthermore, according to the invention of this technical solution 10, the area between the upper inclined edges of the side film is a part that is inclined towards the inside of the bag body as it tends to rise when the spout bag is placed on the mounting surface. Therefore, even if the flange of the spout is extended into the inside of the bag body and the spout bag falls, the side film near the outer periphery of the flange is less likely to hit the ground. Thus, it can suppress the bag body from breaking off near the outer periphery of the flange. In addition, compared with the case where the spout is attached to the area between the base edges of the side film, the top of the spout's dispensing part can be retracted towards the inside of the bag body.

[0029] According to the invention of this technical solution 11, the upper side inclined edge is composed of at least two inclined parts with different inclination angles relative to the vertical direction. Thus, by adjusting the inclination angle of these parts, the edge shape of the upper side inclined edge can be adjusted. With a simple structure, the interval between the inner edge of the sealing area (edge ​​seal) of the side film and the outer periphery of the flange, the interval between the upper side inclined edges (edge ​​seals), or the inclination angle of the flange can be narrowed or the flange can be well adjusted.

[0030] According to the invention of this technical solution 12, the upper side inclined edge has: a gently inclined portion, which connects the portion above the upper end of the base edge and located inside in the front-inward direction to the upper end of the base edge; and a sharply inclined portion, which connects the upper end of the gently inclined portion to the upper end connecting portion. At least a portion of the flange of the mouth is disposed opposite to the area between the gently inclined portion of the outer edge of the front side and the gently inclined portion of the outer edge of the back side. As a result, the space above the mouth attachment position in the liquid-containing portion of the pouch body can be prevented from increasing in the vertical direction, and the distance between the inner edge of the sealing area (edge ​​seal) of the side film and the outer periphery of the flange can be narrowed to better restrain the movement of the mouth. Furthermore, the distance between the upper side inclined edges (edge ​​seals) in the area of ​​the side film where the mouth is attached can be narrowed, allowing the mouth to be positioned deeper into the pouch body.

[0031] Furthermore, in the invention of this technical solution 12, the tilt angle that is inclined towards the inner side of the pouch body as it tends to move upward is relatively gentle. By attaching the mouthpiece to the area between the gently tilted portions, the tilt angle of the pouch body relative to the flange in the vertical direction can be reduced. The extension direction of the dispensing tube of the mouthpiece is adjusted to face downward. Therefore, the so-called leakage of the contents (the phenomenon that the contents leaking from the top of the dispensing tube and flowing along the lower surface of the outer peripheral surface of the dispensing tube when the dispensing tube of the mouthpiece is facing upward after the dispensing of the contents has ended) can be suppressed, and the capacity of the contents that can be contained in the pouch body can be increased.

[0032] According to the invention of technical solutions 13 and 14, at least one of the surface sealing region or the back sealing region has a control sealing portion located inside the surface-to-interior direction of the first virtual line. The control sealing portion has a portion located in the area between the lower half of the flange opposing region and the surface sealing region or the back sealing region in the surface-to-interior direction. Therefore, not only can the movement of the nozzle be more reliably constrained by narrowing the gap between the inner edge of the sealing area (edge ​​seal) of the sidewall film and the outer periphery of the flange in the lower half of the flange opposing region, but also, by forming the control sealing portion, the tilt of the flange can be adjusted so that the tip side of the nozzle's dispensing cylinder faces downwards.

[0033] According to the invention of this technical solution 15, when viewed along the inside-out direction in the unopened state, the liquid containing the mouthpiece contains less than the volume of the portion below the virtual line obtained by extending the lower edge of the inner peripheral surface of the dispensing hole of the mouthpiece along its extending direction in the liquid containing the liquid containing the contents. As a result, the dispensing tube of the mouthpiece is prevented from facing obliquely upward when the liquid is dispensing. Therefore, leakage of the contents, which is called leakage of contents, that flows from the top of the dispensing tube along the lower surface of the outer peripheral surface of the dispensing tube when the liquid is dispensing is finished, can be prevented.

[0034] According to the invention of solutions 16-19, a flange is formed in at least a portion of the outer periphery of the flange fixing portion, and has a flange buffer portion that is not fixed to the mouthpiece film. Thus, when the mouthpiece film moves relative to the flange towards either the inside or outside of the pouch, the mouthpiece film bends at a location corresponding to the outer periphery of the flange. When the mouthpiece film moves relative to the flange towards either the inside or outside of the pouch, the mouthpiece film bends at a location corresponding to the outer periphery of the flange fixing portion. Therefore, film damage caused by repeated bending loads acting on specific parts of the mouthpiece film near the outer periphery of the flange can be avoided when the user grasps the mouthpiece and lifts the pouch with the mouthpiece. Thus, pouch breakage can be suppressed starting from the vicinity of the outer periphery of the flange.

[0035] According to the invention of technical solutions 20 to 23, by forming a flanged buffer portion, it is possible to suppress the tearing of the small bag body starting from the portion of the outer periphery of the flange facing the first side in the longitudinal direction or the portion facing the second side, which is a part that is prone to tearing.

[0036] According to the invention of technical solutions 24 and 25, the flange buffer portion has a retraction portion whose outer peripheral top portion is located on the side away from the mouthpiece mounting film, thereby suppressing excessive force on the mouthpiece mounting film due to contact with the outer peripheral edge of the flange.

[0037] According to the invention of this technical solution 26, the small bag body has a first shape control sealing part formed by fusing the portion of the mouthpiece film located laterally inside the connecting seal with a side film. The first shape control sealing part has a portion located laterally between the flange opposing area and the connecting seal. Thus, by forming the first shape control sealing part, the lateral spacing between the sealing parts on both sides is narrower than the peripheral portion. As a result, the state of the mouthpiece film can be adjusted so that the mouthpiece film near the outer periphery of the flange, which is prone to tearing, penetrates into the small bag. This makes it less likely for the mouthpiece film near the outer periphery of the flange to hit the ground, and also relaxes the tension of the mouthpiece film near the outer periphery of the flange. Therefore, even if the small bag with the mouthpiece falls, the tearing of the small bag body starting from the outer periphery of the flange can be suppressed. Attached Figure Description

[0038] Figure 1 This is an explanatory diagram showing the state in which the mouthpiece pouch of one embodiment of the present invention is placed on a mounting surface during use.

[0039] Figure 2 This is an explanatory diagram showing the various films that make up the spouted pouch.

[0040] Figure 3 This is an explanatory diagram showing the film attached to the nozzle.

[0041] Figure 4 This is an explanatory diagram illustrating the dimensional relationships of the various parts that attach the film to the nozzle.

[0042] Figure 5 This is an illustrative diagram showing an example of a modified design of a small pouch with a spout when it falls.

[0043] Figure 6 This is an explanatory diagram illustrating the assembly scheme of the mouthpiece relative to the film.

[0044] Figure 7 This is an explanatory diagram illustrating the effect of the flanged buffer section.

[0045] Figure 8 This is an explanatory diagram showing a variation of the mouthpiece assembly scheme.

[0046] Figure 9 This is an explanatory diagram showing a modified example of a flange with a recessed portion.

[0047] Figure 10 This is an explanatory diagram illustrating the effect of the retreat section.

[0048] Figure 11 This is an explanatory diagram illustrating the assembly scheme for the mouthpiece.

[0049] Figure 12 This is an explanatory diagram showing the state in which a spouted pouch according to one embodiment of the present invention is placed on a mounting surface.

[0050] Figure 13 This is an explanatory diagram showing the various films that make up the spouted pouch.

[0051] Figure 14 This is an explanatory diagram showing the sidewall film.

[0052] Figure 15 This is an explanatory diagram illustrating the various parts of the sidewall membrane.

[0053] Figure 16 This is an explanatory diagram showing a first modified example of the sidewall film.

[0054] Figure 17 This is an explanatory diagram showing a second modified example of the sidewall film.

[0055] Figure 18 This is an illustrative diagram showing the spout-filled pouch when the contents are being dispensed. Detailed Implementation

[0056] Hereinafter, based on the accompanying drawings, a spout pouch 110 as an embodiment of the present invention will be described.

[0057] The small pouch with a spout (size 110) can hold drinking water, liquid detergent, and other liquids, such as... Figure 1 As shown, the contents are dispensed from the mouth 170 attached to the side of the main body 120 of the bag when the bag is placed with the bottom 120a facing down.

[0058] like Figure 1 As shown, the spouted pouch 110 comprises: a pouch body 120, to which flexible films 130, 140, and 150 are heat-fused to form a sealing portion for bag making, thereby forming a pouch shape; an inner film 160 disposed within the pouch body 120; and a spout 170 attached to the pouch body 120. The spouted pouch 110 is used in conjunction with an outer casing (not shown) during its use, display, and handling.

[0059] The main body of the small bag 120 is configured as a so-called horizontal fold type small bag with flaps on both sides, such as Figure 1 , Figure 2 As shown, it includes: a mouthpiece mounting film 130, to which a mouthpiece 170 is mounted; two side films 140 connected to the mouthpiece mounting film 130 by first connecting seals 122 formed on both sides of the transverse Xa of the mouthpiece mounting film 130; and a second film 150, disposed opposite to the mouthpiece mounting film 130 through a content liquid receiving portion 121, and connected to the side films 140 by second connecting seals 123 formed on both sides of its transverse Xa.

[0060] Each of the films 130, 140, 150, and 160 is formed of a resin film having a heat-fusion layer on at least one side thereon, and is configured such that the heat-fusion layers are opposite each other at the locations where they are heat-fused together.

[0061] It should be noted that, in Figure 2 In the figures, the heat-fusion areas of each film 130, 140, 150, and 160 are indicated by being fully coated.

[0062] like Figure 3 As shown, the mouthpiece mounting film 130 has a flange opposing region 131 for the flanges 171 of the mouthpiece 170 to be opposite each other.

[0063] like Figure 3 As shown, the flange opposing region 131 has: a first opposing region 131a, which is the portion closer to the first side (the upper side in this embodiment) than the center of the longitudinal direction Ya (the vertical direction in this embodiment); and a second opposing region 131b, which is the portion closer to the second side (the lower side in this embodiment) than the center of the longitudinal direction.

[0064] In addition, the mouthpiece mounting film 130 has a mouthpiece through hole 132 formed in the inside-out direction.

[0065] like Figure 1 , Figure 2 As shown, the pouch body 120 includes: a first connecting seal 122, which heat-fuses both sides of the transverse Xa of the mouthpiece film 130 to the side film 140; a second connecting seal 123, which heat-fuses both sides of the transverse Xa of the second film 150 to the side film 140; a top seal 124, which heat-fuses films 140 and 160 at a position corresponding to the top of the pouch body 120 opposite to the bottom seal 125 and the contents container 121; a bottom seal 125, which heat-fuses films 140 and 160 at a position corresponding to the bottom 120a of the pouch body 120; and an intermediate seal 126, which heat-fuses the side film 140 to the inner film 160. These seals 122 to 126 constitute a sealing part for bag making.

[0066] like Figure 2 As shown, the connecting seals 122 and 123 respectively have: a strip-shaped sealing base 122a and 123a extending along the longitudinal direction Ya; a first inclined portion 122b and 123b formed on a first side (upper side) of the sealing base 122a and 123a along the longitudinal direction Ya; and a second inclined portion 122c and 123c formed on a second side (lower side) of the sealing base 122a and 123a along the longitudinal direction Ya.

[0067] like Figure 2 As shown, the sealing bases 122a and 123a have inner edges that extend in a straight line along the longitudinal direction Ya.

[0068] like Figure 2 As shown, the first inclined portions 122b and 123b have inner edges that are inclined relative to the longitudinal direction Ya (45° in this embodiment) in a manner that moves toward the inner side of the transverse direction Xa as it tends toward the first side (upper side).

[0069] like Figure 2 As shown, the second inclined portions 122c and 123c have inner edges that are inclined relative to the longitudinal direction Ya (45° in this embodiment) in a manner that moves toward the inner side of the transverse direction Xa as it tends toward the second side (lower side).

[0070] Furthermore, at designated locations on both sides of the small pocket body 120 that forms the flap (e.g.) Figure 1 As shown in part Aa), a portion is formed by removing parts of films 130 and 140, and the side films 140 are thermally fused together. Thus, at the aforementioned designated portion (e.g., Figure 1 The Aa portion shown prevents separation between the lateral films 140.

[0071] like Figures 1-3As shown, the pouch body 120 has a first shape control seal portion 127, which is formed by fusing a portion of the mouthpiece attaching film 130 located on the inner side of the first connecting seal 122 laterally Xa to a portion of the side film 140 as a shape control seal portion.

[0072] like Figure 2 , Figure 3 As shown, the first shape control sealing portion 127 is formed by continuously protruding from each first connecting seal 122 (sealing base 122a) toward the inside of the transverse Xa on both sides of the opposite region 131 (flange 171) across the flange.

[0073] like Figure 2 , Figure 3 As shown, the first shape control sealing portion 127 has a portion located in the transverse direction Xa between the flange opposing region 131 and the first connecting seal 122. More specifically, it has a portion located in the transverse direction Xa between the first opposing region 131a on the first side (upper side) of the flange opposing region 131 and the first connecting seal 122. In addition, it does not have a portion located in the transverse direction Xa between the second opposing region 131b on the second side (lower side) of the flange opposing region 131 and the first connecting seal 122.

[0074] By forming the first shape control sealing portion 127 in this way, the first opposing region 131a of the flange 171 fixed to the mouthpiece attaching film 130 can be moved towards the inside of the pouch, and the second opposing region 131b of the flange 171 can be moved towards the outside of the pouch, adjusting the tilt of the flange 171 so that the mouthpiece 170 faces the first side (upper side). Furthermore, by adjusting the tilt of the flange 171 in this way, the formation of a buckling-induced portion that easily forms near the second side (lower side) end of the sealing base 122a of the first connecting seal 122 can be suppressed.

[0075] It should be noted that, although not shown in the figure, the first shape control sealing part 127 may also be formed as a portion of the area between the first opposing region 131a located on the first side (upper side) of the flange opposing region 131 and the first connecting seal 122 in the transverse Xa, and also a portion of the area between the second opposing region 131b located on the second side (lower side) of the flange opposing region 131 and the first connecting seal 122 in the transverse Xa.

[0076] like Figure 3 As shown, the first shape control sealing portion 127 has: an innermost top portion 127a located at the innermost side in the transverse direction Xa; a first inner edge portion 127b continuously formed on a first side (upper side) in the longitudinal direction Ya of the innermost top portion 127a; and a second inner edge portion 127c continuously formed on a second side (lower side) in the longitudinal direction Ya of the innermost top portion 127a.

[0077] like Figure 3 As shown, the first inner edge 127b is formed obliquely toward the outer side of the transverse Xa as it tends toward the first side (upper side) in the longitudinal direction Ya.

[0078] like Figure 3 As shown, the second inner edge 127c is formed obliquely toward the outer side of the transverse Xa as it tends toward the second side (lower side) in the longitudinal direction Ya.

[0079] It should be noted that in this embodiment, the innermost top 127a is formed as a dot (apex), but the innermost top 127a can also be formed as having a length in the longitudinal direction Ya, in other words having an inner edge extending in a straight line along the longitudinal direction Ya.

[0080] In addition, such as Figure 3 As shown, when the inner edge near the innermost top 127a is formed into a convex curve towards the inside of the transverse Xa, from the viewpoint of countermeasures against small bag breakage, it is preferable to set the R (radius of curvature) of the inner edge near the innermost top 127a to 20mm or more.

[0081] Furthermore, in this embodiment, the inner edges 127b and 127c are formed into a convex curved shape towards the inner side of the transverse direction Xa, but the specific design can be arbitrary. For example, the inner edges 127b and 127c can be formed into a straight line. Alternatively, they can be formed into a curved shape that is convex towards the outer side of the transverse direction Xa. Furthermore, one or more of the above-mentioned convex or concave curves and straight lines can be arbitrarily combined. It should be noted that when the inner edges 127b and 127c are formed into a convex curved shape towards the inner side of the transverse direction Xa, it is preferable to set the radius of curvature R to 20 mm or more.

[0082] like Figure 2 , Figure 3 As shown, the small bag body 120 has a second shape control seal portion 128 on the second side (lower side) closer to the longitudinal direction Ya than the first shape control seal portion 127. This second shape control seal portion 128 is formed by fusing a portion of the mouthpiece attaching film 130 located inside the first connecting seal 122 on the transverse direction Xa with a portion of the side film 140.

[0083] like Figure 2 , Figure 3 As shown, the second shape control sealing portion 128 is formed to be spaced apart from the first shape control sealing portion 127 in the longitudinal direction Ya.

[0084] like Figure 2 , Figure 3As shown, the second shape control sealing portion 128 is formed by continuously protruding from each of the first connecting seals 122 (sealing base 122a) toward the inside of the transverse Xa on both sides of the opposite region 131 (flange 171) across the flange.

[0085] like Figure 2 , Figure 3 As shown, the second shape control sealing portion 128 has a portion of a region located on the second side (lower side) of the flange opposing region 131 in the transverse direction Xa between the second opposing region 131b and the first connecting seal 122, and does not have a portion of a region located on the first side (upper side) of the flange opposing region 131 in the transverse direction Xa between the first opposing region 131a and the first connecting seal 122.

[0086] By forming the second shape control sealing part 128 in this way, the first opposing region 131a of the flange 171 fixed to the mouthpiece attaching film 130 can be moved laterally to the outside of the pouch, and the second opposing region 131b of the flange 171 can be moved laterally to the inside of the pouch, adjusting the tilt of the flange 171 so that the mouthpiece 170 is oriented toward the second side (lower side).

[0087] It should be noted that, although not shown in the figure, the second shape control sealing part 128 may also be formed as a portion of the area between the second opposing region 131b located on the second side (lower side) of the flange opposing region 131 and the first connecting seal 122 in the transverse Xa, and also a portion of the area between the first opposing region 131a located on the first side (upper side) of the flange opposing region 131 and the first connecting seal 122 in the transverse Xa.

[0088] like Figure 3 As shown, the second shape control sealing portion 128 has: an innermost top portion 128a located at the innermost side in the transverse direction Xa; a first inner edge portion 128b continuously formed on a first side (upper side) in the longitudinal direction Ya of the innermost top portion 128a; and a second inner edge portion 128c continuously formed on a second side (lower side) in the longitudinal direction Ya of the innermost top portion 128a.

[0089] like Figure 3 As shown, the first inner edge 128b is formed at an angle toward the outer side of the transverse Xa as it tends toward the first side (upper side) in the longitudinal direction Ya.

[0090] like Figure 3 As shown, the second inner edge 128c is formed obliquely towards the outer side of the transverse Xa as it tends toward the second side (lower side) in the longitudinal direction Ya.

[0091] It should be noted that in this embodiment, the innermost top 128a is formed as a dot (apex), but the innermost top 128a can also be formed as having a length in the longitudinal direction Ya, in other words having an inner edge extending in a straight line along the longitudinal direction Ya.

[0092] In addition, such as Figure 3 As shown, when the inner edge near the innermost top 128a is formed into a convex curve towards the inside of the transverse Xa, from the viewpoint of countermeasures against small bag breakage, it is preferable to set the R (radius of curvature) of the inner edge near the innermost top 128a to 20mm or more.

[0093] Furthermore, in this embodiment, it is assumed that the second shape control sealing portion 128 is formed at a predetermined interval from the first shape control sealing portion 127 in the longitudinal direction Ya. However, the first shape control sealing portion 127 and the second shape control sealing portion 128 may also be formed continuously in the longitudinal direction Ya. In addition, in this case, the shape control sealing portions 127 and 128 may be formed such that the inner edge of the connection portion of the first shape control sealing portion 127 and the second shape control sealing portion 128 is located inside the transverse direction Xa of the first connecting seal 122 (sealing base 122a).

[0094] Furthermore, in this embodiment, the inner edges 128b and 128c are formed into a convex curved shape towards the inner side of the transverse direction Xa, but the specific design can be arbitrary. For example, the inner edges 128b and 128c can be formed into a straight line. Alternatively, they can be formed into a curved shape that is convex towards the outer side of the transverse direction Xa. Furthermore, one or more of the above-mentioned convex or concave curves and straight lines can be arbitrarily combined. It should be noted that when the inner edges 128b and 128c are formed into a convex curved shape towards the inner side of the transverse direction Xa, it is preferable to set the radius of curvature R to 20 mm or more.

[0095] The nozzle 170 is made of synthetic resin or the like and is attached to the main body 120 of the pouch to function as an outlet for the contents.

[0096] like Figure 1 , Figure 2 As shown, the mouth part 170 is attached to a position closer to the second side (lower side) than the center of the longitudinal direction Ya of the mouth part attachment film 130.

[0097] like Figure 6 As shown, the mouth part 170 has a flange 171 disposed opposite to the mouth part mounting film 130. In this embodiment, the flange 171 is formed as a disc-shaped part with a through hole in its center and a circular outer periphery, disposed on the inner side of the pouch body 120, and fixed to the inner side of the mouth part mounting film 130 by heat fusion.

[0098] It should be noted that, in Figure 1 , Figure 6 In the figure, only a portion of the mouth 170 is shown, with most of the mouth 170 located on the outside of the pouch body 120.

[0099] like Figure 6 As shown, the flange 171 has: an annular (circular in this embodiment) flange fixing portion 172, which is fixed to the mouthpiece mounting film 130 by heat fusion; a flange buffer portion 173, which is formed on at least a portion of the outer periphery of the flange fixing portion 172 and is not fixed to the mouthpiece mounting film 130; an outer peripheral unfixed portion 174, which is formed on a portion of the outer periphery of the flange fixing portion 172 and is not fixed to the mouthpiece mounting film 130; and an annular (circular in this embodiment) inner peripheral unfixed portion 175, which is disposed on the inner peripheral side of the flange fixing portion 172 and is not fixed to the mouthpiece mounting film 130.

[0100] The flanged buffer portion 173 is formed in the portion of the outer periphery of the flanged fixing portion 172 that is not fixed to the nozzle mounting film 130, such as Figure 6 As shown, its radial width Wa3 is the radial width Wa1 of the flange opposing region 131 at the position (circumferential position) where the flange buffer portion 173 is formed (i.e., in Figure 6 In the example shown, the portion where the radial width Wa2 of the flanged fixing portion 172 and the radial width Wa3 of the flanged buffer portion 173 are 20-80% (more preferably 30-80%, more preferably 45-80%), 2 mm or more (more preferably 3 mm or more), and / or the thickness of the nozzle mounting film 130 (60µm-300µm) is 650% or more (more preferably 1000% or more), based on the above settings (radial width Wa3 is 20% or more of the radial width Wa1, 2 mm or more, and / or 650% or more of the thickness of the nozzle mounting film 130), such as Figure 7 As shown, this is a part that prevents bending loads from acting on a specific part of the mouthpiece film 130 when it moves relative to the flange 171 towards the inside or outside of the pouch.

[0101] That is, such as Figure 7 As shown in (c) and (d), when the flange 171 is not provided with the flange buffer 173, and the mouthpiece film 130 moves relative to the flange 171 toward the inside or outside of the pouch, the bending load acts on a specific part of the mouthpiece film 130, and sometimes the film is damaged at that specific part.

[0102] In contrast, when a flange buffer 173 is provided on the flange 171, such as Figure 7As shown in (a), when the mouthpiece film 130 moves relative to the flange 171 toward the inside of the pouch, the mouthpiece film 130 bends at the location corresponding to the outer periphery of the flange 171. Furthermore, when the mouthpiece film 130 moves relative to the flange 171 toward the outside of the pouch, the mouthpiece film 130 bends at the location corresponding to the outer periphery of the flange fixing portion 172. Therefore, bending load can be avoided acting on specific parts of the mouthpiece film 130.

[0103] It should be noted that when the radial width Wa3 of the flanged buffer portion 173 is greater than 80% of the radial width Wa1, the radial width Wa2 of the flanged fixing portion 172 becomes too narrow to adequately ensure the fixing strength of the flange 171 relative to the nozzle mounting film 130. This fixing portion is prone to peeling due to impacts, etc., and is therefore not ideal. It should be noted that, to ensure fixing strength, the radial width Wa2 of the flanged fixing portion 172 is preferably set to 2 mm or more (more preferably 3 mm or more).

[0104] Furthermore, regarding the relationship between the thickness of the mouthpiece mounting film 130 and the radial width Wa3 of the flange buffer portion 173, it is preferable to set the radial width Wa3 to be larger when the thickness of the mouthpiece mounting film 130 is large. The reason for this is not yet certain, but it is speculated that it is due to the following reason: when the thickness of the mouthpiece mounting film 130 is small, the proportion of the mouthpiece mounting film 130 that is bent due to elastic deformation rather than plastic deformation is relatively large, resulting in high durability relative to the bent film. Conversely, when the thickness of the mouthpiece mounting film 130 is large, the proportion of the mouthpiece mounting film 130 that is bent due to elastic deformation is relatively small, resulting in low durability relative to the bent film.

[0105] like Figure 6 As shown in (a), the flange buffer portion 173 is formed on the outer periphery of the flange fixing portion 172 at a position including the first side (upper side) facing the longitudinal direction Ya at the center of the transverse direction Xa.

[0106] In addition, such as Figure 6 As shown in (a), the flange buffer portion 173 is also formed on the outer periphery of the flange fixing portion 172 at a position including the second side (lower side) facing the longitudinal direction from the center of the transverse direction Xa.

[0107] exist Figure 6In the example shown in (a), the flange buffer portion 173 is formed such that its radial width is not fixed. The flange buffer portion 173 has a wide portion 173a with the widest width in the radial direction of the flange buffer portion 173. The flange buffer portion 173 on the first side (upper side) is formed at the position of the portion on the first side (upper side) of the outer periphery of the flange fixing portion 172, which includes the central part facing the longitudinal direction Ya in the transverse direction Xa.

[0108] Similarly, on the second side (lower side), the flange buffer portion 173, the wide portion 173a is formed at the position of the second side (lower side) portion on the outer periphery of the flange fixing portion 172, including the central part facing the longitudinal direction Ya in the horizontal direction Xa.

[0109] It should be noted that in this embodiment, the wide portion 173a of the flange buffer portion 173 on the first side (upper side) and the wide portion 173a of the flange buffer portion 173 on the second side (lower side) are formed with the same radial width, but they may also be formed with different radial widths.

[0110] exist Figure 6 In the example shown in (a), the flange fixing part 172 is provided in the outer peripheral side of the flange 171 where the thickness is thinner.

[0111] Furthermore, the unattached portion 174 on the outer periphery is the portion of the outer periphery of the flanged attachment portion 172 that is not attached to the mouthpiece mounting film 130, and does not exert the effect achieved by the flanged buffer portion 173 (the effect of avoiding bending load on a specific part of the mouthpiece mounting film 130). Therefore, its radial width is narrower than that of the flanged buffer portion 173.

[0112] The unattached portion 174 on the outer periphery serves to prevent the adhesive from leaking (overflowing) beyond the outer periphery of the flange 171 when the flange 171 is attached to the nozzle mounting film 130 using an adhesive, or to prevent the nozzle mounting film 130 from being attached to the flange 171 near the outer periphery of the flange 171 when the nozzle mounting film 130 is wrinkled.

[0113] It should be noted that, in the above... Figure 6 In the illustrated embodiment, it is assumed that the flange buffer portion 173 is formed at two locations on the first (upper) and second (lower) sides of the outer periphery of the flange fixing portion 172. However, the specific design of the flange buffer portion 173 is not limited to the above-described design. The flange buffer portion 173 can be formed in any configuration according to the embodiment. For example, the flange buffer portion 173 may be formed only at either the first (upper) or second (lower) side of the outer periphery of the flange fixing portion 172. Furthermore, as... Figure 8As shown in (a), the flange buffer portion 173 can also be formed around the entire circumference of the outer periphery of the flange fixing portion 172. Figure 8 In the modified example shown in (a), the flange buffer portion 173 is formed with a uniform radial width covering the entire circumference of the flange fixing portion 172. Furthermore, as... Figure 8 As shown in the modified example (b), a region where the outer peripheral unfixed portion 174 is not formed may also be formed in a part of the outer periphery of the flange fixing portion 172 (i.e., the region where the mouthpiece film 130 is fixed to the outer periphery of the flange 171).

[0114] Next, based on Figures 9-11 A modified example of the mouth portion 170 in which a recess portion 176 is formed on the flange 171 will be described.

[0115] First of all, Figure 6 In the examples shown, it is assumed that the flange 171 of the mouth 170 is formed as a flat plate. However, in Figure 9 In the modified example shown, the flange buffer portion 173 has its outer peripheral top portion located on the side further away from the nozzle mounting film 130 than the flange fixing portion 172 in the thickness direction. Figure 9 The retreating part 176 (on the right side).

[0116] exist Figure 9 In the example shown, the retraction portion 176 is achieved by aligning the outer periphery of the flange 171 toward the side away from the mouthpiece mounting film 130. Figure 9 The right side is curved and formed, and on the side opposite to the mouthpiece mounting film 130, it has a side that moves away from the mouthpiece mounting film 130 as it tends towards the outer periphery. Figure 9 The curved surface 176a is curved in a manner close to the right side. (e.g., the right side of the curved surface 176a) Figure 9 As shown, the curved surface 176a faces the side opposite to the mouthpiece mounting film 130. Figure 9 The left side of the curves in a convex manner.

[0117] By forming such a recessed portion 176 on the flange 171, as Figure 10 As shown, when the spouted pouch 110 is dropped, even if the contact area between the spout-attached film 130 and the outer periphery of the flange 171 hits the ground, excessive force on the spout-attached film 130 at that location can be suppressed, preventing that location from becoming the starting point for the pouch to break.

[0118] It should be noted that the recessed portion 176 may be formed in a ring shape covering the entire circumference of the outer periphery of the flange 171, or it may be formed only in a portion of the outer periphery of the flange 171. Furthermore, if the recessed portion 176 is formed only in a portion of the outer periphery of the flange 171, the recessed portion 176 may also be formed in multiple locations separated in the circumferential direction.

[0119] Furthermore, regarding the circumferential dimensional (width) relationship and positional relationship between the flange buffer portion 173 and the retraction portion 176, it is sufficient to set the circumferential dimensional (width) and position of the flange buffer portion 173 and the retraction portion 176 in at least a portion of the outer periphery of the flange 171, such that the flange buffer portion 173 and the retraction portion 176 overlap in the circumferential direction.

[0120] Furthermore, regarding the radial dimensional relationship between the flanged buffer portion 173 and the retraction portion 176, such as Figure 11 As shown in (a), the flange buffer portion 173 and the retraction portion 176 can be set such that their radial dimensions (widths) are the same. Furthermore, as... Figure 11 As shown in (b), the radial dimension (width) of the recessed portion 176 can be set to be larger than that of the flanged buffer portion 173. Furthermore, as... Figure 11 As shown in (c), the radial dimension (width) of the retraction portion 176 can be set smaller than that of the flange buffer portion 173. Figure 11 In the examples shown in (a) to (c), the outer periphery of the flange buffer 173 is at the same position as the outer periphery of the retraction portion 176.

[0121] In addition, Figure 9 In the example shown, the retraction portion 176 has a side that causes the outer peripheral side of the flange 171 to face away from the mouthpiece mounting film 130. Figure 9 The right side) is curved, but for the specific shape of the recess 176, as long as its outer peripheral top end is located on the side farther away from the mouth-mounted film 130 than the flange fixing part 172 ( Figure 9 It can be formed in a way that is on the right side, and can be any shape, for example, such as Figure 11 As shown in (d), instead of bending the flange 171, the flange 171 can be bent in the middle of the radial direction to form the recess 176.

[0122] The inner film 160 is rectangular (or substantially rectangular) in shape, having at least one heat-fused layer on one side, and is formed as a flexible resin film, from... Figure 1 , Figure 2 It can be seen that the contents are arranged in a double-folded state inside the small bag body 120 (content liquid container 121), and its designated part is heat-fused to the side film 140.

[0123] like Figure 2 As shown, a plurality of film through-holes are formed on the inner film 160, which are formed as holes extending through the film thickness direction.

[0124] In addition, such as Figure 1 , Figure 2 As shown, a handle hole 129 is formed on the top side of the pouch 110 where the sealing portion overlaps with the film 140, 160, and is formed through the overlapping portion of the film 140, 160, for the user's hand or fingers to pass through and hold the pouch 110.

[0125] Next, based on Figure 4 The specific design of each part of the spout pouch 110 is explained.

[0126] First, such as Figure 4 As shown, the lateral dimension ba1 from the first connecting seal 122 (sealing base 122a) to the innermost top 127a of the first shape control seal 127 is preferably set to 6 to 10% of the lateral interval aa between the first connecting seal 122 (sealing base 122a) on the lateral Xa.

[0127] Furthermore, the lateral dimension ba1 is preferably set to 20 to 50% of the lateral dimension ca of the portion 131c located on the outermost side (first connecting seal 122 side) in the lateral direction Xa from the outer periphery of the first connecting seal 122 (sealing base 122a) to the flange opposing area 131 (flange 171).

[0128] By setting it in this way, the movement of the mouth 170 can be avoided by excessively restricting the mouth 170 through the mouth fitting film 130, and the effects achieved by controlling the sealing part 127 by forming the first shape can be well obtained (the effect of making the mouth fitting film 130 near the outer periphery of the flange 171 penetrate deeper into the pouch, the effect of relaxing the tension of the mouth fitting film 130 near the outer periphery of the flange 171, and the effect of adjusting the tilt of the flange 171).

[0129] In addition, such as Figure 4 As shown, the lateral dimension ba2 from the first connecting seal 122 (sealing base 122a) to the innermost top 128a of the second shape control seal 128 is preferably set at 4 to 10% of the lateral interval aa.

[0130] Furthermore, the lateral dimension ba2 is preferably set to 10% to 50% of the lateral dimension ca.

[0131] By setting it in this way, the movement of the mouth 170 can be avoided by excessively restricting the mouth 170 through the mouth fitting film 130, and the effects achieved by controlling the sealing part 128 by forming the second shape can be well obtained (the effect of making the mouth fitting film 130 near the outer periphery of the flange 171 penetrate deeper into the pouch, the effect of relaxing the tension of the mouth fitting film 130 near the outer periphery of the flange 171, and the effect of adjusting the tilt of the flange 171).

[0132] Furthermore, the lateral dimension ba1 is preferably set to be greater than or equal to the lateral dimension ba2.

[0133] Furthermore, the lateral dimension ba2 is preferably set to be more than 30% of the lateral dimension ba1.

[0134] By setting it in this way, the tilt of the mouth 170 can be well adjusted, that is, the tilt of the mouth 170 towards the first side (upper side) or the second side (lower side) in the longitudinal direction Ya can be well adjusted.

[0135] In addition, such as Figure 4 As shown, the longitudinal position of the innermost top 127a of the first shape control sealing portion 127 (the longitudinal position of the end of the second side of the innermost top 127a when the innermost top 127a is formed to have a length in the longitudinal direction Ya) is preferably set within ±10 mm in the longitudinal direction Ya of the portion 131d located closest to the first side (upper side) in the longitudinal direction Ya from the outer periphery of the flange opposing region 131 (flange 171).

[0136] By setting it in this way, the state of the mouthpiece film 130 near the portion 131d can be adjusted so that it extends deeper into the pouch, and the tension of the mouthpiece film 130 near the portion 131d can be relaxed. It should be noted that, from the viewpoint of relaxing the tension of the mouthpiece film 130 near the portion 131d, it is preferable to set the longitudinal position of the innermost top 127a of the first shape control seal portion 127 to be offset from the longitudinal position of the portion 131d to either the first side (upper side) or the second side (lower side).

[0137] In addition, such as Figure 4As shown, the longitudinal position of the end (lower end) of the second side (lower side) of the first shape control sealing portion 127 (second inner edge portion 127c) is preferably set in the transverse direction Xa at a position to the side of the flange opposing region 131 (flange 171), and preferably within ±10mm of the center position in the longitudinal direction Ya of the flange opposing region 131 (flange 171), and preferably aligned with the center position in the longitudinal direction Ya of the flange opposing region 131 (flange 171). By setting it in this way, when the spouted pouch 110 is dropped, etc., Figure 5 As shown in section B, starting from the lower end of the first shape control sealing portion 127 (second inner edge portion 127c) on both sides of the transverse Xa, the mouthpiece mounting film 130 (first connecting seal 122) is bent, and the deformation of the mouthpiece mounting film 130 is guided by the axis L extending along the transverse Xa in a way that passes through the flange opposing region 131 (flange 171) and is centered on the second side, so that the mouthpiece 170 is rotated (tilted) toward the second side.

[0138] Furthermore, at this time, in order to guide the mouthpiece mounting film 130 as... Figure 5 In the state shown in (b), it is preferable to set the longitudinal position of the end (upper end) of the first side (upper side) of the second shape control sealing portion 128 (first inner edge portion 128b) to be lower than the center position on the longitudinal direction Ya of the flange opposing region 131 (flange 171). By setting it in this way, as Figure 5 As shown in (b), the first connecting seal 122 near the area where the second-shaped control seal portion 128 is formed can be moved toward the inner side of the transverse direction Xa, and the nozzle 170 can be guided to rotate (tilt) toward the second side with the axis La as the center. It should be noted that at this time, in Figure 5 As shown in section D, the nozzle-mounted film 130 (first connecting seal 122) is bent starting from the lower end of the second shape control seal portion 128 (second inner edge portion 128c) on both sides of the transverse Xa. Furthermore, in order to guide the nozzle 170 to rotate (tilt) towards the second side with the axis L as the center, as... Figure 5 As shown in (a), more preferably, the longitudinal position of the end (upper end) of the first side (upper side) of the second shape control sealing portion 128 (first inner edge portion 128b) is set in the transverse direction Xa at a position located to the side of the flange opposing region 131 (second opposing region 131b).

[0139] Furthermore, by guiding the mouthpiece film 130 and mouthpiece 170 when the mouthpiece pouch falls, etc. Figure 5 The state shown in (b) prevents the mouth 170 from avoiding the inside of the pouch, and the mouth 170 is subjected to a strong force due to contact with the ground or the like.

[0140] In addition, such as Figure 4 As shown, the longitudinal dimension sa (the longitudinal dimension sa of the first inner edge 127b) from the innermost top 127a of the first shape control sealing portion 127 to the end (upper end) of the first side (upper side) of the first shape control sealing portion 127 (first inner edge 127b) is preferably set to be larger than the longitudinal dimension ta (the longitudinal dimension ta of the second inner edge 127c) from the innermost top 127a of the first shape control sealing portion 127 to the end (lower end) of the second side (lower side) of the first shape control sealing portion 127 (second inner edge 127c).

[0141] In addition, such as Figure 4 As shown, the longitudinal dimension sa and the transverse dimension ba1 are preferably set such that the angle between the virtual line connecting the end of the first side (upper end) of the first shape control sealing part 127 (first inner edge 127b) to the first connecting seal 22 from the innermost top 127a (the end of the first side of the innermost top 127a when the innermost top 127a is formed to have a length in the longitudinal direction Ya) of the first shape control sealing part 127 (first inner edge 127b) and the first connecting seal 22 is 5 to 10°.

[0142] By setting it in this way, it is possible to prevent the formation of a part that is prone to bag breakage near the first connecting seal 122 of the mouthpiece film 130.

[0143] In addition, such as Figure 4 As shown, the longitudinal position of the innermost top 128a of the second shape control sealing portion 128 (the longitudinal position of the end of the first side of the innermost top 128a when the innermost top 127a is formed to have a length in the longitudinal direction Ya) is preferably set to the longitudinal position of the portion 131e located in the longitudinal direction Ya closest to the second side (lower side) from the outer periphery of the flange opposing region 131 (flange 171) (or the portion located in the longitudinal direction Ya closest to the second side from the outer periphery of the flange fixing portion 172) within ±5mm in the longitudinal direction Ya.

[0144] By setting it in this way, the state of the mouthpiece film 130 near the portion 131e can be adjusted so that it extends deeper into the pouch, and the tension of the mouthpiece film 130 near the portion 131e can be relaxed. It should be noted that, from the viewpoint of relaxing the tension of the mouthpiece film 130 near the portion 131e, it is preferable to set the longitudinal position of the innermost top 128a of the second shape control seal portion 128 to be offset from the longitudinal position of the portion 131e towards either the first side (upper side) or the second side (lower side).

[0145] Furthermore, as described above, by setting the longitudinal position of the innermost top 128a of the second shape control sealing portion 128 within ±5mm of the portion 131e in the longitudinal direction Ya, the mouthpiece mounting film 130 and the mouthpiece 170 can be smoothly guided as described above. Figure 5 The state shown in (b).

[0146] In addition, such as Figure 4 As shown, the longitudinal position of the end (lower end) of the second side (lower side) of the second shape control sealing portion 128 (second inner edge portion 128c) is preferably set to be closer to the first side (upper side) than the second inclined portion 122c of the first connecting seal 122.

[0147] By setting it in this way, the second shape control seal 128 can be prevented from affecting the shape of the bottom 120a of the pouch. That is, when the pouch 110 with a spout is placed on the mounting surface, the second inclined portion 122c becomes part of the bottom 120a of the pouch. However, by setting the second shape control seal 128 to be closer to the first side (upper side) than the second inclined portion 122c, the second shape control seal 128 can be prevented from affecting the shape of the bottom 120a of the pouch.

[0148] The embodiments of the present invention have been described in detail above, but the present invention is not limited to the above embodiments. Various design changes can be made without departing from the present invention as described in the claims. In addition, the above embodiments and the modified examples described below can be arbitrarily combined to construct the spouted pouch 110.

[0149] For example, in the above embodiments, the use of the spout pouch 110 is described in which it is housed in the outer casing (not shown) during use, display, and transportation. Alternatively, it may not be housed in the outer casing (not shown), and the spout pouch 110 may be used on its own, or displayed and transported.

[0150] Furthermore, regarding the specific designs for films 130, 140, 150, and 160, as long as at least one side has a heat-melting layer such as low-density polyethylene or polypropylene (olefins), or PET (polybutylene terephthalate) or other polyesters, any layer can be stacked on top of the single film or heat-melting layer. The raw materials constituting the stack can be freely chosen, and can be formed by stacking known polyesters such as PET and PBT, polypropylene, polyamide, polyethylene, aluminum foil, etc.

[0151] Furthermore, in the above embodiment, it is assumed that the bag body 120 is formed by four films 130, 140, and 150. However, the specific arrangement of the bag body 120, such as the number of films constituting the bag body 120, is not limited to the above arrangement. For example, a bottom lining film may be separately provided at the position corresponding to the bottom 120a of the bag.

[0152] Alternatively, the inner membrane 160 may not be provided.

[0153] Furthermore, in the above-described embodiments, the small bag 110 with a spout is configured as a large-capacity small bag with a capacity of 2 to 5 L. In addition, the spout 170 is configured as a large spout with an outer diameter of 50 to 70 mm for the flange 171. However, the size of the small bag 110 with a spout and the spout 170 are not limited to these, and can be arbitrarily set according to the embodiments.

[0154] Furthermore, in the above embodiment, it is assumed that the mouthpiece attaching film 130 to which the mouthpiece 170 is attached is a lining film constituting the flap (fold) of the transverse fold type pouch. However, the specific design of the mouthpiece attaching film 130 is not limited to this. For example, the mouthpiece attaching film 130 may also be a lining film disposed at the top or bottom of the pouch. In addition, the mouthpiece attaching film 130 may also be a film other than a lining film.

[0155] Furthermore, in the above embodiment, it is assumed that the shape control sealing portions 127 and 128 are continuously formed on the first connecting seal 122. However, the shape control sealing portions 127 and 128 may also be formed independently of (at a distance from) the first connecting seal 122.

[0156] Furthermore, in the above embodiment, it was described that a first shape control sealing portion 127 was formed on each side of the flange opposing region 131. However, it is also possible to form the first shape control sealing portion 127 on only one side of the transverse Xa of the flange opposing region 131. Similarly, it is also possible to form the second shape control sealing portion 128 on only one side of the transverse Xa of the flange opposing region 131.

[0157] It should be noted that in the above-described embodiments (and variations), such as Figure 3 As shown, the shape control sealing portions 127 and 128 on both sides of the transverse Xa are formed symmetrically (left-right symmetrically) with the virtual line extending along the longitudinal Ya from the center of the transverse Xa of the nozzle-attached film 130 as the reference line, but are not limited to this.

[0158] Similarly, the first connecting seals 122 on both sides of the transverse Xa are also formed as line-symmetrical (left-right symmetrical) based on the above-mentioned virtual line, but are not limited thereto.

[0159] Furthermore, in the above embodiment, it was assumed that a first shape control sealing portion 127 and a second shape control sealing portion 128 were formed. However, it is also possible to form only the first shape control sealing portion 127 without forming the second shape control sealing portion 128. It should be noted that the dimensional relationships of the portions associated with the first shape control sealing portion 127 in the case where only the first shape control sealing portion 127 is formed are the same as those described above. Figure 4 The same explanation has been given. Alternatively, the first shape control sealing portion 127 may not be formed, and only the second shape control sealing portion 128 may be formed. It should be noted that, in the case where only the second shape control sealing portion 128 is formed, the dimensional relationships of the parts associated with the second shape control sealing portion 128 are the same as described above. Figure 4 The same explanation was provided.

[0160] Furthermore, in the above embodiment, it is assumed that the flange 171 is formed as a disk shape with a circular outer periphery. However, the specific shape of the flange 171 can also be any shape, such as having an outer periphery shape other than a circle, such as a rectangle or a polygon.

[0161] Furthermore, in the above embodiment, it is assumed that the flange 171 is fixed to the inner side of the mouthpiece mounting film 130, but the flange 171 may also be fixed to the outer side of the mouthpiece mounting film 130.

[0162] In addition, the method of fixing the flange 171 to the nozzle mounting film 130 can be any method other than heat fusion or adhesive bonding.

[0163] Furthermore, in the above embodiments, it is assumed that a flange buffer 173 is provided on the flange 171. However, the fixing scheme of the flange 171 relative to the mouthpiece mounting film 130 can be any scheme, or the flange buffer 173 may not be provided on the flange 171. For example, the entire area of ​​the flange 171 may be fixed to the mouthpiece mounting film 130.

[0164] Furthermore, in the above embodiment, it is assumed that a first shape control sealing portion 127 and a second shape control sealing portion 128 are formed in the first connecting seal 122, but these shape control sealing portions 127 and 128 may not be formed.

[0165] It should be noted that the terms "top", "bottom" and "side" are used in this specification to indicate up and down, but these terms do not limit the orientation of the spouted pouch 110 during display, handling, etc. For example, during display, handling, etc., the side and top of the spouted pouch 110 can be facing down, and the spouted pouch 110 can be placed on the mounting surface.

[0166] Next, based on the accompanying drawings, a spout pouch 210, which is one embodiment of the present invention, will be described.

[0167] The small pouch 210 with a spout holds liquids such as drinking water and liquid detergent. Figure 12 , Figure 18 As shown, the contents are dispensed from the mouthpiece 280 attached to the side of the pouch body 220.

[0168] like Figure 12 As shown, the pouch 210 with a spout has: a pouch body 220, to which flexible films 230, 240, 250, and 260 are heat-fused to form a sealing part for bag making, thereby forming a pouch shape; an inner film 270 disposed inside the pouch body 220; and a spout 280 attached to the pouch body 220.

[0169] The main body 220 of the small bag is configured as a so-called horizontal fold type small bag with flaps on both sides, such as Figure 12 , Figure 13 As shown, it includes: a front film 230 and a back film 240, which are arranged opposite each other in the front-to-back direction Xb, separated by a liquid-containing portion 221; a side film 250, which is disposed between the front film 230 and the back film 240 on one side of the pouch and is heat-fused to the front film 230 and the back film 240 by a first edge seal 222; and a second inner liner film 260, which is arranged opposite to the side film 250 in the front-to-back direction Zb, separated by a liquid-containing portion 221, and is heat-fused to the front film 230 and the back film 240 on the other side of the pouch by a second edge seal 223.

[0170] Each of the films 230, 240, 250, 260, and 270 is formed of a resin film having a heat-fusion layer on at least one side thereon, and is configured such that the heat-fusion layers are opposite each other at the locations where they are heat-fused together.

[0171] It should be noted that, in Figure 13 In the figures, the heat-fusion areas of each film 230, 240, 250, 260, and 270 are indicated by being fully coated.

[0172] like Figure 12 , Figure 13As shown, the pouch body 220 includes: a first edge seal 222 that heat-fuses the two transverse sides of the side lining film 250 to the films 230 and 240; a second edge seal 223 that heat-fuses the two transverse sides of the second inner lining film 260 to the films 230 and 240; a top seal 224 that heat-fuses the films 230, 240, and 260 at a position corresponding to the top of the pouch body 220 opposite to the bottom seal 225 and the contents compartment 221; a bottom seal 225 that heat-fuses the films 230, 240, and 260 at a position corresponding to the bottom 220a of the pouch body 220; and an intermediate seal 226 that heat-fuses the films 230 and 240 to the inner film 270. These seals 222 to 226 constitute a sealing portion for bag making.

[0173] Furthermore, at a designated location on the side of the small pocket body 220 that forms the flap (e.g.) Figure 12 As shown in Part Ab), a portion is formed by removing part of the second inner liner film 260, and the films 230 and 240 are thermally fused together. Thus, at the aforementioned designated portion (e.g., Figure 12 (As shown in part A) prevents the separation between films 230 and 240.

[0174] like Figure 14 As shown, the sidewall film 250 has: a surface sealing region 251, which is heat-fused to the surface film 230 by the first edge seal 222; a back sealing region 252, which is heat-fused to the back film 240 by the first edge seal 222; and a non-sealing region 253, which is the region inside the surface sealing region 251 and the back sealing region 252.

[0175] like Figure 14 As shown, the non-sealed region 253 has a surface outer edge 254 that serves as the boundary with the surface sealing region 251 and a back outer edge 255 that serves as the boundary with the back sealing region 252.

[0176] The side film 250 is formed as a reference to a virtual line extending along the vertical direction Yb from the center of the side film 250 in the inward direction Xb. In other words, the outer edge 254 on the front side and the outer edge 255 on the back side are formed as a reference to the virtual line and are formed as a reference to the virtual line.

[0177] like Figure 14As shown, the outer edge 254 on the front side and the outer edge 255 on the back side each have: base edge portions 254a and 255a, which are separately arranged in the inward-outward direction Xb; lower inclined edge portions 254b and 255b, which extend from the lower end of the base edge portions 254a and 255a to a lower end connecting portion 253a that connects the lower ends of the outer edge 254 and the outer edge 255 to each other; and upper inclined edge portions 254c and 255c, which extend from the upper end of the base edge portions 254a and 255a to an upper end connecting portion 253b that connects the upper ends of the outer edge 254 and the outer edge 255 to each other.

[0178] like Figure 14 As shown, the base edges 254a and 255a are formed to extend in a straight line along the vertical direction Yb.

[0179] like Figure 14 As shown, the lower inclined edges 254b and 255b extend in a straight line inclined in the vertical direction Yb as they tend to move downwards and towards the inside of the inward direction Xb (at an inclination angle of 45° in this embodiment).

[0180] The upper inclined edges 254c and 255c are composed of at least two inclined portions with different inclination angles relative to the vertical direction Yb. In this embodiment, as shown... Figure 15 As shown, it has: gently inclined portions 254d and 255d, which connect the portion above the upper end of the base edge portions 254a and 255a and located inside the inward-outward direction Xb to the upper end of the base edge portions 254a and 255a; and steeply inclined portions 254e and 255e, which connect the upper end of the gently inclined portions 254d and 255d to the upper end connecting portion 253b.

[0181] exist Figure 15 In the example shown, each gently sloping portion 254d and 255d is composed of a straight portion that extends in a vertical direction Yb at an angle that tends to move upward toward the inside of the inward direction Xb. In addition, each sharply sloping portion 254e and 255e is composed of a straight portion that extends in a vertical direction Yb at an angle that tends to move upward toward the inside of the inward direction Xb (at an angle of 45° in this embodiment).

[0182] like Figure 15 As shown, the first virtual line Lb1, passing through the upper and lower ends of the gently sloping portions 254d and 255d, extends obliquely in the vertical direction Yb, moving towards the inner side of the inward direction Xb as it tends upward.

[0183] like Figure 15As shown, the second virtual line Lb2, passing through the upper and lower ends of the steeply inclined portions 254e and 255e, extends obliquely in the vertical direction Yb, moving towards the inside of the inward direction Xb as it tends upward.

[0184] like Figure 15 As shown, the tilt angle θ1 of the first virtual line Lb1 relative to the vertical direction Yb is smaller than the tilt angle θ2 of the second virtual line Lb2 relative to the vertical direction Yb. In other words, compared with the first virtual line Lb1 (gently tilted portions 254d and 255d), the second virtual line Lb2 (sharply tilted portions 254e and 255e) moves more strongly (greater) towards the inside of the inward direction Xb as it tends to rise.

[0185] In addition, such as Figure 14 , Figure 15 As shown, the sidewall film 250 has a flange-opposing region 256 opposite to the flange 281 of the nozzle portion 280. In this embodiment, the flange-opposing region 256 is formed as an annular shape with a circular outer periphery.

[0186] In addition, the side film 250 has a circular through hole 257 formed through in the film thickness direction for inserting the dispensing tube portion 282 of the nozzle 280.

[0187] The nozzle 280, made of synthetic resin or the like, is attached to the main body 220 of the pouch and functions as the outlet for the contents. Figure 12 , Figure 18 As shown, it has: a flange 281, which is disposed opposite to the side film 250; an injection tube 282, which has an injection hole 282a extending perpendicularly to the disc-shaped flange 281; and a cap 283, which is detachably mounted on the top of the injection tube 282.

[0188] In this embodiment, the flange 281 is formed as a disc-shaped (ring-shaped) portion with a through hole in its center and a circular outer periphery (flange outer periphery), disposed on the inner side of the small bag body 220, and at least a portion thereof is fixed to the inner side of the side film 250 by heat fusion.

[0189] It should be noted that, in Figure 12 In the diagram, only the flange 281 of the mouth part 280 is shown, as... Figure 18 As shown, most of the spout 280 of the dispensing tube 282, cap 283, etc., is located on the outside of the small bag body 220.

[0190] like Figure 15 As shown, at least a portion of the central flange 281 (flange opposing region 256) of the flange 281 (flange opposing region 256) is included. Figure 15In the example shown, the area between the upper inclined edge 254c of the outer edge 254 and the upper inclined edge 255c of the outer edge 255 is arranged opposite to the area between the upper inclined edge 254d of the outer edge 254 and the upper inclined edge 255d of the outer edge 255. More specifically, the area between the gently inclined portion 254d of the outer edge 254 and the gently inclined portion 255d of the outer edge 255 is arranged opposite to the area between the upper inclined portion 254d of the outer edge 254 and the upper inclined portion 255d of the outer edge 255.

[0191] In addition, such as Figure 15 As shown, the flange 281 (flange opposing region 256) is disposed in the center of the side film 250 in the inward direction Xb. The distance between the outer edge 254 of the front side and the outer edge of the flange 281 (flange opposing region 256) in the inward direction Xb is equal to the distance between the outer edge 255 of the back side and the outer edge of the flange 281 (flange opposing region 256).

[0192] from Figure 12 It can be seen that the area between the upper inclined edge 254c of the outer surface edge 254 with the flange 281 (at least a portion) and the upper inclined edge 255c of the back edge 255 is the portion that, when viewed along the inside-outside direction Xb with the pouch bottom 220a facing down, is inclined towards the inside of the pouch body 220 in the front-to-back direction Zb as it tends upward. Therefore, from Figure 12 , Figure 18 As can be seen, when the spouted pouch 210 is placed on the mounting surface and observed along the inside-out direction Xb, the dispensing cylinder 282 of the spout 280 assembled in the above-mentioned area is obliquely upward relative to the vertical direction Yb (and the front-back direction Zb), in other words, it is in an oblique state that moves towards the outside of the pouch body 220 in the front-back direction Zb as it moves upward.

[0193] The inner film 270 is rectangular (or substantially rectangular) in shape, having at least one heat-fused layer on one side, and is formed as a flexible resin film. Figure 12 , Figure 13 It can be seen that the contents are arranged in a double-folded state inside the small bag body 220 (content liquid containing part 221), and its designated parts are heat-fused to the film 230, 240.

[0194] like Figure 13 As shown, a plurality of film through-holes are formed in the inner film 270, which are formed as holes extending through the film thickness direction.

[0195] In addition, such as Figure 12 , Figure 13As shown, a handle hole 227 is formed in the part of the bag-making sealing part (top seal 224) on the top side of the spout pouch 210 where the film 230, 240, and 260 overlaps, and is formed through the part where the film 230, 240, and 260 overlaps, for the user's hand or fingers to pass through and hold the spout pouch 210.

[0196] It should be noted that, in Figure 13 In this embodiment, for ease of technical understanding, it is assumed that the handle hole 227 is formed without thermal fusion between the films 230, 240, and 260. However, in this embodiment, the handle hole 227 is formed by punching a specified part after thermal fusion between the films 230, 240, and 260.

[0197] Here, as Figure 18 As shown in (a), when the spouted pouch 210, containing contents in the contents container 221, is lifted in an unopened state (before the contents are dispensed) and supported (held) by the top seal 224 (top side of the pouch) with a handle hole 227, and viewed along the inside-out direction Xb, the contents container 221 of the spouted pouch 210 contains less than the volume of contents below the lower edge of the inner circumferential surface of the dispensing hole 282a of the spout 280 (specifically, the lower edge of the inner circumferential surface of the dispensing hole 282a on the top side of the dispensing cylinder 282) extending in its extending direction along the virtual line Lb3 in the contents container 221. It should be noted that... Figure 18 (a) shows a state in which the liquid contents 221 contain the same amount of liquid contents as the portion below the virtual line Lb3 in the liquid contents 221.

[0198] Thus, by setting the amount of content liquid contained in the content liquid container 221, as... Figure 18 As shown in (a), when the small bag 210 with the spout is tilted and lifted horizontally to dispense the contents, the dispensing cylinder 282 of the nozzle 280 can be tilted horizontally or directed downwards (i.e., tilted downwards than horizontally), thus avoiding... Figure 18 The so-called leakage of the contents shown in (b) refers to the phenomenon that occurs when the contents are being dispensed and the dispensing tube 282 of the nozzle 280 is tilted upward (i.e., tilted upward than horizontally), causing the contents to leak from the top of the dispensing tube 282 and flow along the lower surface of the outer peripheral surface of the dispensing tube 282.

[0199] Furthermore, from the viewpoint of suppressing leakage of such contents and increasing the capacity of the contents that can be contained in the pouch body 220, it is ideal to adjust the extension direction of the dispensing portion 282 of the nozzle 280 (the direction in which the virtual line Lb3 extends) to be downward (close to the direction perpendicular to the vertical direction Yb) by reducing the tilt angle of the area in the side film 250 where the flange 281 is attached (the area between the gently inclined portions 254d and 255d) relative to the vertical direction Yb.

[0200] Next, based on Figure 16 , 17 Modifications to the upper inclined edges 254c and 255c of the sidewall film 250 will be described. It should be noted that in the modifications described below, the components other than some are exactly the same as those in the above-described embodiment. Therefore, the description of the components other than the differences is omitted.

[0201] First, in the above Figure 15 In the example shown, it is assumed that the gently inclined portions 254d and 255d are composed of a straight section extending inclinedly along the vertical direction Yb. However, the specific configuration of the gently inclined portions 254d and 255d is not limited to the above configuration, as long as they are composed of at least one straight section, at least one curved section, or a combination thereof.

[0202] exist Figure 16 In the example shown, the gently sloping portions 254d and 255d are composed of multiple (three) straight sections. Specifically, they are composed of a first straight section that extends obliquely in the vertical direction Yb, moving upward toward the inner side of the inward direction Xb from the upper end of the base edge portions 254a and 255a; a second straight section that extends obliquely in the vertical direction Yb from the upper end of the first straight section; and a third straight section that extends obliquely in the vertical direction Yb, moving upward toward the inner side of the inward direction Xb from the upper end of the second straight section.

[0203] exist Figure 17 In the example shown, the gently sloping portions 254d and 255d are composed of a plurality of (three) straight sections. Specifically, they are composed of a first straight section that extends obliquely in the vertical direction Yb, moving upward toward the inner side of the inward direction Xb from the upper end of the base edge portions 254a and 255a; a second straight section that extends obliquely in the vertical direction Yb, moving upward toward the outer side of the inward direction Xb from the upper end of the first straight section; and a third straight section that extends obliquely in the vertical direction Yb, moving upward toward the inner side of the inward direction Xb from the upper end of the second straight section.

[0204] From these Figure 16 , 17 As can be seen from the example shown, the straight (or curved) portion constituting the gently sloping portions 254d and 255d can be any portion that extends slopingly along the vertical direction Yb in a manner that approaches the inner side of the inward direction Xb as it tends upward, extends along the vertical direction Yb, or extends slopingly along the vertical direction Yb in a manner that approaches the outer side of the inward direction Xb as it tends upward.

[0205] In addition, Figures 15-17 In the example shown, the steeply inclined portions 254e and 255e are also similar, consisting of a straight section extending at an inclination along the vertical direction Yb. However, the specific design of the steeply inclined portions 254e and 255e is not limited to the above, as long as they are composed of at least one straight section, at least one curved section, or a combination thereof.

[0206] In addition, Figure 17 In the example shown, at least one of the front sealing region 251 or the back sealing region 252 (in Figure 17 In the example shown, both sides have control sealing parts 251a and 252a located inside the first virtual line L1 in the inward direction Xb.

[0207] like Figure 17 As shown, the control sealing portions 251a and 252a are formed such that in the inward-outward direction Xb, there is a portion located between the lower half of the flange opposing region 256 (flange 281) and the front sealing region 251 or the back sealing region 252, and there is no portion located above the center of the vertical direction Yb of the flange opposing region 256 (flange 281).

[0208] In addition, such as Figure 17 As shown, the portion of the control sealing portions 251a and 252a located on the inner side closest to the inside in the inside-out direction Xb is located in the area between the lower half of the flange opposing region 256 (flange 281) and the front sealing region 251 or the back sealing region 252 in the inside-out direction Xb.

[0209] In addition, such as Figure 17 As shown, the control sealing parts 251a and 252a have a portion located on the lower side of the flange opposing region 256 (flange 281).

[0210] 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 can be made without departing from the present invention as described in the claims. In addition, the above embodiments and the various components of the modified examples described below can be arbitrarily combined to construct the spout pouch 210.

[0211] For example, the spouted pouch 210 can be used within the outer casing (not shown) during use, display, or transport, or it can be used independently of the spouted pouch 210 itself, or used for display or transport.

[0212] Furthermore, regarding the specific designs for films 230, 240, 250, 260, and 270, as long as at least one side has a heat-melting layer such as low-density polyethylene or polypropylene (olefins), or PET (polybutylene terephthalate) or other polyesters, any layer can be stacked on top of the single film or heat-melting layer. The raw materials constituting the stack can be freely chosen, and can be formed by stacking known polyesters such as PET and PBT, polypropylene, polyamide, polyethylene, aluminum foil, etc.

[0213] Furthermore, in the above embodiment, it is assumed that the bag body 220 is formed by four films 230, 240, 250, and 260. However, the specific arrangement of the bag body 220, such as the number of films constituting the bag body 220, is not limited to the above arrangement. For example, a bottom lining film may be provided at a position corresponding to the bottom 220a of the bag.

[0214] Alternatively, the inner membrane 270 may not be provided.

[0215] Furthermore, in the above-described embodiments, the small bag 210 with a spout is configured as a large-capacity small bag with a capacity of 2 to 5 L. In addition, the spout 280 is configured as a large spout with an outer diameter of 50 to 70 mm for the flange 281. However, the size of the small bag 210 with a spout and the spout 280 are not limited to these, and can be arbitrarily set according to the embodiments.

[0216] Furthermore, in the above embodiment, it is assumed that the outer edge 254 on the front side and the outer edge 255 on the back side are formed as linearly symmetrical (left-right symmetrical) with reference to a virtual line extending along the vertical direction Yb from the center of the inner-outer direction Xb of the sidewall film 250. However, it is also possible to form the outer edge 254 on the front side and the outer edge 255 on the back side as asymmetrical.

[0217] Furthermore, in the above embodiments, it is assumed that the control sealing portions 251a and 252a are continuously formed in the sealing regions 251 and 252, but it is also possible that the control sealing portions 251a and 252a are formed independently of (at a distance from) the sealing regions 251 and 252.

[0218] Furthermore, in the above embodiment, it is assumed that the flange 281 is formed as a disk shape with a circular outer periphery. However, the specific shape of the flange 281 can also be any shape, such as the outer periphery (flange outer periphery) having a shape other than a circle, such as a rectangle or a polygon.

[0219] Furthermore, in the above embodiment, it is assumed that the flange 281 is fixed to the inner side of the side film 250, but the flange 281 may also be fixed to the outer side of the side film 250.

[0220] In addition, the method of fixing the flange 281 to the side film 250 can be any method other than heat fusion or adhesive bonding.

[0221] It should be noted that the terms "top", "bottom" and "side" are used in this specification to indicate up and down, but these terms do not limit the orientation of the spouted pouch 210 during display, handling, etc. For example, during display, handling, etc., the side and top of the spouted pouch 210 can be facing down, and the spouted pouch 210 can be placed on the mounting surface.

[0222] Furthermore, in the above embodiment, it is assumed that the contents are dispensed while the small bag 210 with the spout is lifted by grasping the top side of the small bag. However, the specific method of dispensing the contents is not limited to the above method. For example, the contents may be dispensed while the small bag 210 with the spout is lifted by supporting or grasping a part other than the top of the small bag, such as the bottom 220a of the small bag. Alternatively, the contents may be dispensed while the small bag 210 with the spout is placed on the mounting surface.

[0223] Explanation of reference numerals in the attached figures

[0224] 110, 210: Small pouches with spouts;

[0225] 120, 220: main body of pouch;

[0226] 120a, 220a: Bottom of the small bag;

[0227] 121, 221: Contents liquid receiving section;

[0228] 122: First connecting seal (connecting seal);

[0229] 222: First edge seal (edge ​​seal);

[0230] 122a: Sealing base;

[0231] 122b: First inclined section;

[0232] 122c: Second inclined section;

[0233] 123: Second connecting seal;

[0234] 223: Second edge seal;

[0235] 123a: Sealing base;

[0236] 123b: First inclined part;

[0237] 123c: Second inclined section;

[0238] 124, 224: Top seal;

[0239] 125, 225: Bottom seal;

[0240] 126, 226: Intermediate seals;

[0241] 127: First shape control sealing part;

[0242] 227: Handle hole;

[0243] 127a: Innermost top;

[0244] 127b: First edge;

[0245] 127c: Second edge;

[0246] 128: Second shape control sealing part;

[0247] 128a: Innermost top;

[0248] 128b: First edge;

[0249] 128c: Second edge;

[0250] 129: Handle hole;

[0251] 130: The nozzle is fitted with a thin film;

[0252] 230: Surface thin film;

[0253] 131: Flanged area with opposite edges;

[0254] 131a: First opposing region;

[0255] 131b: Second opposing region;

[0256] 132: The mouth part has a through hole;

[0257] 140: Lateral membrane;

[0258] 240: Backside film;

[0259] 150: Second thin film;

[0260] 250: Side film;

[0261] 251: Surface sealing area;

[0262] 251a: Control sealing part;

[0263] 252: Backside sealing area;

[0264] 252a: Control sealing part;

[0265] 253: Unsealed area;

[0266] 253a: Lower end connecting part;

[0267] 253b: Upper connecting part;

[0268] 254: Outer edge of the surface;

[0269] 254a: Basal margin;

[0270] 254b: Lower lateral inclined edge;

[0271] 254c: Upper lateral sloping edge;

[0272] 254d: Gently sloping section;

[0273] 254e: Sharply inclined section;

[0274] 255: Outer edge of the dorsal side;

[0275] 255a: Basal margin;

[0276] 255b: Lower lateral sloping edge;

[0277] 255c: Upper lateral sloping edge;

[0278] 255d: Gently sloping section;

[0279] 255e: Sharply inclined section;

[0280] 256: Flanged area with opposite edges;

[0281] 257: The mouth part has a through hole;

[0282] 260: Second thin film;

[0283] 160, 270: Inner membrane;

[0284] 170, 280: Mouth area;

[0285] 171, 281: Flip-edge;

[0286] 172: Flanged fixed joint;

[0287] 173: Flanged buffer section;

[0288] 173a: Wide section;

[0289] 174: Unsecured portion on the outer periphery;

[0290] 175: Unsecured portion on the inner circumference;

[0291] 176: Retreat Department;

[0292] 176a: Curved surface;

[0293] 282: Injection tube section;

[0294] 282a: Injection hole;

[0295] 283: Cover;

[0296] Xa: Horizontal;

[0297] Ya: Vertical;

[0298] Lb1: First virtual line;

[0299] Lb2: Second virtual line;

[0300] Xb: Direction (inside / outside);

[0301] Yb: Up and down direction;

[0302] Zb: Forward and backward direction.

Claims

1. A pouch with a spout, the pouch comprising: a front film; a back film; a side film disposed on the side of the pouch between the front film and the back film, and heat-fused to the front film and the back film by an edge seal; and a spout attached to the side film, characterized in that, The sidewall membrane has: a surface sealing region, heat-fused to the surface membrane at the edge seal; a back sealing region, heat-fused to the back membrane at the edge seal; and a non-sealing region, which is the region inside the surface sealing region and the back sealing region. The non-sealed area has a surface outer edge that serves as the boundary with the surface-sealed area and a back outer edge that serves as the boundary with the back-sealed area. The outer edge on the front side and the outer edge on the back side each have: a base edge portion, which is disposed separately from each other in the front-inward direction; and an upper inclined edge portion, which extends from the upper end of the base edge portion to an upper end connecting portion that connects the upper ends of the outer edge on the front side and the outer edge on the back side. At least a portion of the flange of the mouth is disposed opposite each other in the area between the upper inclined edge of the outer surface and the upper inclined edge of the outer back.

2. The small pouch with a spout according to claim 1, characterized in that, The upper inclined edge is composed of at least two inclined portions with different inclination angles relative to the vertical direction.

3. The small pouch with a spout according to claim 2, characterized in that, The upper inclined edge portion has: a gently inclined portion, connecting a part that is above the upper end of the base edge portion and located inside it in the inward direction to the upper end of the base edge portion; and a sharply inclined portion, connecting the upper end of the gently inclined portion to the upper end connecting portion. The first virtual line passing through the upper and lower ends of the gently sloping portion extends in a vertically inclined manner, moving inwards towards the inside as it tends upwards. The second virtual line, passing through the upper and lower ends of the steeply inclined portion, extends obliquely in the vertical direction, moving inwards towards the inside as it tends upwards. The tilt angle of the first virtual line relative to the vertical direction is set to be smaller than the tilt angle of the second virtual line relative to the vertical direction. At least a portion of the flange is disposed opposite each other in the area between the gently sloping portion of the outer edge of the front side and the gently sloping portion of the outer edge of the back side.

4. The small pouch with a spout according to claim 3, characterized in that, The sidewall film has a flange-opposing area for the flanges to be oriented opposite each other. At least one of the front sealing region and the back sealing region has a control sealing portion located inside the front-to-back direction of the first virtual line. The control sealing portion has a portion located in the inward direction between the lower half of the flange opposing region and the front sealing region or the back sealing region.

5. The small pouch with a spout according to claim 4, characterized in that, The control sealing part has a portion located on the lower side of the flange opposing area.

6. The spouted pouch according to any one of claims 1 to 5, characterized in that, When viewed along the inside-out direction in the unopened state, the liquid content of the contents of the spout pouch contains less than the volume of the portion below the virtual line formed by extending the lower edge of the inner circumferential surface of the spout's dispensing hole along its extending direction.

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