JP7167620B2 - spouts and pouches with spouts - Google Patents

Description

TECHNICAL FIELD The present invention relates to a spout attached to a pouch and a pouch with a spout, and more particularly to a spout and a pouch with a spout in which a flange portion is formed above an attachment portion attached to the pouch.

BACKGROUND ART Conventionally, spouted pouches, in which a spout is attached to an outlet of a pouch formed by heat-sealing stacked films at predetermined locations, have been widely used as containers for storing contents such as jelly-like beverages. .

It is known that such a spout is formed with a flange portion projecting to the outer peripheral side above the mounting portion attached to the pouch (see Patent Document 1, for example).

JP 2013-071781 A

In such a spout-equipped pouch, when the user opens and closes the cap, the user grasps the flange formed above the mounting portion with the fingers of one hand and opens the cap with the fingers of the other hand. The cap may be rotated while holding the

However, since the thickness of the flange portion in the vertical direction is generally thin, the flange portion may bite into the finger gripping the flange portion, causing pain and discomfort to the user. There was a problem.

Therefore, the present invention is intended to solve these problems, and has a simple structure, a spout and a spout attachment that can stably hold the spout without causing pain or discomfort to the user. The purpose is to provide a pouch.

The spout of the present invention includes a mounting portion attached to the pouch, one or more flange portions formed above the mounting portion, and a spout hole formed in the mounting portion and extending along the vertical direction. The spout has a spout body having the attachment portion and the flange portion, and a cap portion attached to the spout body by screw engagement . , a first flange portion formed at the bottom and a second flange portion formed above the first flange portion, and the attachment portion includes an end face of the front side attachment portion facing the front side in the front and back direction of the pouch and a back mounting portion end face facing the back side in the front and back direction of the pouch, and the first flange portion includes a first front side flange end face facing the front side in the front and back direction of the pouch and a first front side flange end face facing the back side in the front and back direction of the pouch 1 rear flange end face, and the first front flange end face is located outside the pouch front and back direction from the front mounting portion end face at a central position corresponding to the central axis of the pouring hole in the left and right direction of the pouch. , the first back side flange end surface is located outside the back attachment portion end surface in the front and back direction of the pouch at the central position, and is between the front attachment portion end surface and the first front side flange end surface at the central position The distance D1 in the front and back direction of the pouch is set within 0.5 mm, and the distance D2 in the front and back direction of the pouch between the end surface of the back mounting portion and the end surface of the first back flange at the center position is within 0.5 mm , and at least one of the first front side flange end face and the first back side flange end face is positioned relative to the spout body relative to the cap portion when the cap is opened, relative to the central position in the pouch left-right direction. Only at a position closer to the front side of the pouch, there is a first flange bulging portion that bulges outward in the front and back direction of the pouch, and the second flange portion is a second front flange end surface that faces the front side in the front and back direction of the pouch. , and a second back flange end face facing the back side in the front and back direction of the pouch, wherein the second front flange end face and the second back flange end face are positioned forward in the rotational direction from the center position in the left and right direction of the pouch. and a second flange bulging portion projecting outward in the front and back direction of the pouch at a position closer to the rear side, and each of the second flange bulging portions has a flat portion parallel to the left-right direction and the up-down direction of the pouch. and the flat portion is the flat portion of the first flange portion in the front and back direction of the pouch. Positioned outside the outermost portion of the first flange bulging portion in the front and back direction of the pouch, or at the same position as the outermost portion of the first flange bulging portion of the first flange portion in the pouch front and back direction. By, the said subject is solved.
A spout according to another aspect of the present invention includes a mounting portion attached to a pouch, one or more flange portions formed above the mounting portion, and a flange portion formed on the mounting portion and extending in the vertical direction. The spout has a spout body having the attachment portion and the flange portion, and a cap portion attached to the spout body by screw engagement. The flange portion includes a first flange portion formed at the bottom and a second flange portion formed above the first flange portion. It has a front side mounting portion end face facing and a back side mounting portion end face facing the back side in the front and back direction of the pouch, and the first flange portion has a first front side flange end face facing the front side in the front and back direction of the pouch and a front side mounting portion end face facing the back side in the front and back direction of the pouch. and a first back flange end face facing the back side of the pouch, and the first front flange end face is closer to the front and back of the pouch than the end face of the front attachment portion at a central position corresponding to the central axis of the pour hole in the left-right direction of the pouch. or at the same position in the front-back direction as the front-side attachment portion end face, and the first back-side flange end face is positioned inside the pouch front-back direction from the back-side attachment portion end face at the central position, or Located at the same position in the front and back direction of the pouch as the back side mounting portion end face , at least one of the first front side flange end face and the first back side flange end face is located at the same position in the pouch lateral direction than the central position in the pouch left and right direction. A first flange bulging portion bulging outward in the front and back direction of the pouch is provided only at a position closer to the front side in the rotational direction of the spout body relative to the cap portion, and the second flange portion is located on the front and back of the pouch. It has a second front flange end face facing the front side in the direction and a second back flange end face facing the back side in the pouch front and back direction, and the second front flange end face and the second back flange end face are located in the pouch left-right direction Second flange bulging portions protruding outward in the front and back direction of the pouch are provided at positions closer to the front side and the rear side in the rotational direction than the central position, and each of the second flange bulging portions It has a flat portion parallel to the left-right direction and the up-down direction of the pouch, and the flat portion is outside in the front and back direction of the pouch from the outermost portion of the first flange bulging portion of the first flange portion in the front and back direction of the pouch, or , the maximum of the first flange bulging portion of the first flange portion in the front and back direction of the pouch The problem is solved by being located at the same position as the outer part .
Further, a spouted pouch according to another aspect of the present invention is a spouted pouch comprising the spout and a pouch having a front side film portion and a back side film portion and attached to the mounting portion, wherein the distance D1 is set to be equal to or greater than the thickness T1 of the front film portion, and the distance D2 is set to be equal to or greater than the thickness T2 of the back film portion.

According to the invention of claim 1, the first front side flange end face and the first back side flange end face are located at the central position corresponding to the central axis of the pouring hole in the left-right direction of the pouch. , the distance D1 in the pouch front-back direction between the end face of the front mounting portion at the center position and the end face of the first front flange is set within 0.5 mm, A distance D2 in the front and back direction of the pouch between the end face of the back attachment portion at the central position and the end face of the first back flange is set within 0.5 mm. As a result, the step between the mounting portion and the first flange portion is reduced, and when the user grips the spout with his or her fingers when opening or closing the cap, the user can grip both the mounting portion and the first flange portion. Therefore, it is possible to suppress the first flange portion from digging into the user's finger, and the user can stably hold the spout without feeling pain or discomfort. Moreover, since the amount of material for the first flange portion can be reduced, the manufacturing cost can be reduced.

According to the invention of claim 2, the distance D1 in the pouch front-rear direction between the end surface of the front attachment portion and the end surface of the first front flange is set to be equal to or greater than the thickness dimension T1 of the front film portion, and the end surface of the back attachment portion is and the first back flange end face in the pouch front and back direction is set to be equal to or greater than the thickness dimension T2 of the back film portion, so that when the user grips the spout with his or her fingers, the front film Since it is possible to suppress contact with the edge of the back film and the back film, the user can grip the spout without feeling pain or discomfort.
According to the third aspect of the present invention, the distance D1 in the front and back direction of the pouch between the end face of the front mounting portion and the end face of the first front flange is set to 1.0 to 3.0 times the thickness dimension T1 of the front film portion. In addition, by setting the distance D2 in the front and back direction of the pouch between the end face of the back mounting portion and the end face of the first back flange to 1.0 to 3.0 times the thickness dimension T2 of the back film portion, the user can When the user grips the spout with his or her fingers, the user's finger should not touch a so-called poly pool formed by melting the adhesive layer of each film part when welding each film part to the spout mounting part. can be suppressed.
According to the fourth aspect of the present invention, the first front flange end face is positioned inside the front mounting portion end face in the front and back direction of the pouch at the central position or at the same position as the front mounting portion end face in the front and rear direction of the pouch. , the first back side flange end face is positioned inside the back side attachment part end face in the front and back direction of the pouch at the central position or at the same position as the back side attachment part end face in the front and back direction of the pouch. As a result, it is possible to prevent the first flange portion from digging into the user's finger when opening and closing the cap, so that the user can stably hold the spout without feeling pain or discomfort. can do.
According to the inventions of Claims 1 and 4 , at least one of the first front flange end surface and the first rear flange end surface is positioned relative to the spout body relative to the cap portion when the cap is opened, relative to the central position of the pouch in the left-right direction. The first flange bulging portion bulging outward in the front and back direction of the pouch is provided only at a position closer to the front side in the direction of rotation, so that when the cap is opened, the user's finger does not touch the bulging portion of the first flange. Since it is possible to hook on the protruding portion, it is possible to improve the ease of opening the cap, and when the cap is closed, it is avoided that the finger of the user is caught on the protruding portion of the first flange. Excessive tightening can be suppressed.
According to the inventions of Claims 1 and 4 , the flat portions of the second flange bulging portions formed parallel to the left-right direction and the vertical direction of the pouch correspond to the flange bulging portions of the first flange portion in the front and back direction of the pouch. Outside the outermost part of the pouch in the front and back direction, or at the same position as the outermost part of the flange bulging part of the first flange part in the front and back direction of the pouch, when transporting a pouch with a spout The spouts can be transported in a pile-up state along the transport direction by contacting the flat portions between the front and rear spouts in the transport direction, thereby improving the transportability of the spout-equipped pouches. be able to.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram showing a pouch with a spout according to one embodiment of the present invention; Explanatory drawing which shows the spout main body seen from the front-back direction of a pouch. FIG. 5 is an explanatory view showing the dimensional relationship between the first flange portion and the mounting portion as viewed from above; FIG. 5 is an explanatory view showing the dimensional relationship between the second flange portion and the mounting portion as viewed from above; Explanatory drawing which shows the modification of a 1st flange part or a 2nd flange part. Explanatory drawing which shows the modification of a 2nd flange part.

A spouted pouch 10 according to an embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the spout-equipped pouch 10 is configured by attaching a spout 30 functioning as an outlet to a pouch 20 formed in a bag shape by heat-sealing stacked films at predetermined locations, and providing jelly. It accommodates viscous and fluid contents (content liquid) such as beverages.

Each component of the spouted pouch 10 will be described below with reference to the drawings.

The spout 30 is made of synthetic resin or the like, and as shown in FIG. there is

As shown in FIGS. 1 to 4, the spout body 31 has a boat-shaped cross-section (specifically, a cylindrical portion protruding outward in the left-right direction X from near both ends of the pouch in the left-right direction X). A mounting portion 32 formed in a shape in which a triangular projecting portion is formed, a pouring tube portion 33 extending upward from the mounting portion 32, and a pouring tube portion 33 extending downward from the mounting portion 32 to the inside of the pouch 20. It integrally has a straw portion 34 arranged and a plurality of flange portions 35 and 36 formed above the mounting portion 32 at intervals.

As shown in FIGS. 1 to 4, the mounting portion 32 is arranged between the front film portion 21 and the back film portion 22 of the pouch 20 with its longitudinal direction directed in the left-right direction X of the pouch, and is attached by heat welding or the like. It is a part fixed to the front side film part 21 and the back side film part 22 .
As shown in FIGS. 2 to 4, the attachment portion 32 has a front attachment portion end surface 32a facing the front side in the pouch front-back direction Y and a back attachment portion end surface 32b facing the back side in the pouch front-back direction Y. .
As shown in FIGS. 3 and 4, the mounting portion 32 has a round pouring hole 32c formed along the vertical direction Z. As shown in FIG.

The pouring tube portion 33 is a cylindrical portion having a round pouring hole 33a continuous in the vertical direction Z with the pouring hole 32c of the mounting portion 32, as shown in FIGS.
As shown in FIG. 2, a screw portion 33b that can be engaged with the cap portion 37 is provided on the outer peripheral surface of the pouring tube portion 33 on the upper end side of the pouring tube portion 33 (above the second flange portion 36). is formed.

Between the first flange portion 35 and the second flange portion 36, an inter-flange portion 33c is formed on the outer peripheral surface of the extraction tube portion 33, as shown in FIG.
The inter-flange portion 33c faces the front side or the back side of the pouch in the front-back direction Y, faces the front side end face and the back side end face parallel to the pouch left-right direction X and the up-down direction Z, and faces the left side or the right side in the pouch left-right direction X, and faces the pouch front and back sides. It has a left end face and a right end face parallel to the Y direction and the Z direction.
It is preferable that the front side end face and the back side end face of the inter-flange portion 33c are formed so as not to protrude outward in the front and back direction Y of the pouch from the flange portions 35 and 36 over the entire surface.
In this embodiment, the front side end face and the back side end face of the inter-flange portion 33c are located at the central position C corresponding to the central axis of the pouring hole 32c in the pouch left-right direction X, rather than the flanges 35 and 36 in the pouch front and back direction. Located inside Y.
Further, the left end surface and the right end surface of the inter-flange portion 33c are located inside the pouch left-right direction X relative to the flange portions 35 and 36 .

As shown in FIG. 1, the straw part 34 is a part that is arranged inside the pouch 20 and forms a channel for pouring out the contents inside the pouch 20 .

As shown in FIG. 2, the plurality of flanges 35 and 36 have a first flange 35 formed at the bottom (formed closest to the mounting portion 32) and a first flange 35 above the first flange 35. A formed second flange portion 36 is included.

The first flange portion 35 is formed above and adjacent to the mounting portion 32 without a gap, and as shown in FIGS. and a first back flange end face 35b facing the back side in the Y direction.

As shown in FIG. 3, each flange end surface 35a, 35b of the first flange portion 35 is positioned forward in the direction of relative rotation of the spout body 31 with respect to the cap portion 37 when the cap is opened (torque is applied when the cap is opened). side), a flat portion 35e formed on the rear side in the rotation direction, and R portions formed on both ends of the flange end surfaces 35a and 35b in the pouch left-right direction X. is doing.

As shown in FIG. 3, the first flange bulging portion 35c is formed to bulge outward in the front-back direction Y of the pouch at a position closer to the front side in the rotational direction than the central position C. Specifically, , is formed as a convex portion that protrudes outward in the front-rear direction Y of the pouch from the flat portion 35e.
Each first flange bulging portion 35c has a flat portion 35d that is formed parallel to the left-right direction X and the up-down direction Z of the pouch.
As shown in FIG. 3, the flat portion 35e is formed so as to straddle the central position C, and is formed parallel to the left-right direction X and the up-down direction Z of the pouch.
(Flat portion 35e thereof) of each of the flange end faces 35a and 35b is located outside of the attachment portion end faces 32a and 32b in the front and back direction Y of the pouch at the central position C. As shown in FIG.

As shown in FIG. 2, the second flange portion 36 is formed on the outer periphery of the extraction tube portion 33 above the first flange portion 35 and below the screw portion 33b.

As shown in FIG. 4, the second flange portion 36 has a second front flange end face 36a facing the front side in the front-back direction Y of the pouch and a second rear flange end face 36b facing the back side in the front-back direction Y of the pouch. ing.

As shown in FIG. 4, each flange end surface 36a, 36b of the second flange portion 36 bulges outward in the front-back direction Y of the pouch to positions closer to the front side and rear side in the rotation direction than the central position C. Each has a second flange swelling portion 36c.
R portions are formed at both ends of the flange end faces 35a and 35b in the left-right direction X of the pouch.

As shown in FIG. 4, each second flange bulging portion 36c has a concave curved surface 36d formed on the side of the central position C and a flat portion 36e formed outside the curved surface 36d in the left-right direction X of the pouch. and

As shown in FIG. 4, the curved surface 36d on the front side in the rotation direction and the curved surface 36d on the rear side are smoothly formed so that the flange end surfaces 36a and 36b are aligned in the pouch left-right direction X. A concave curved portion 36f is formed in the center.

As shown in FIG. 1, each flat portion 36e is positioned outside the curved surface 36d in the front-back direction Y of the pouch, and is formed parallel to the left-right direction X and the up-down direction Z of the pouch.
The flat portion 36e of the second flange portion 36 is positioned further in the pouch front-back direction Y than the outermost portion (the flat portion 35d in this embodiment) of the first flange bulging portion 35c of the first flange portion 35 in the pouch front-back direction Y. It is positioned on the outside or at the same position as the outermost portion of the first flange bulging portion 35c in the front-rear direction Y of the pouch.

The cap portion 37 has a threaded portion (not shown) that can be engaged with the threaded portion 33b of the spout body 31 on its inner peripheral surface. , and is configured to be opened and closed with respect to the cap portion 37 . Specifically, in the present embodiment, when the cap portion 37 is viewed from above, the cap portion 37 is closed when the cap portion 37 is rotated clockwise, and the cap portion 37 is rotated counterclockwise. The cap portion 37 is configured to be opened when it is opened.

Next, the dimensional relationship between each part of the spouted pouch 10 will be explained below.

First, as shown in FIG. 3, the distance D1 in the pouch front-back direction Y between (the outermost point of) the front mounting portion end surface 32a and (the outermost point of) the first front flange end surface 35a at the central position C is , is set within 0.5 mm.
Further, the distance D1 is preferably set to be equal to or greater than the thickness dimension T1 of the front film portion 21. Further, the distance D1 is set to 1.0 to 3.0 times the thickness dimension T1 of the front film portion 21. preferably.

Further, as shown in FIG. 3, the distance D2 in the pouch front-back direction Y between (the outermost point of) the back mounting portion end surface 32b and (the outermost point of) the first back side flange end surface 35b at the central position C is , is set within 0.5 mm.
Further, the distance D2 is preferably set to be equal to or greater than the thickness dimension T2 of the back film portion 22, and furthermore, the distance D2 is set to be 1.0 to 3.0 times the thickness dimension T2 of the back film portion 22. preferably.

In this embodiment, the thickness dimension T1 and the thickness dimension T2 are set equal, and the distance D1 and the distance D2 are set equal.

Further, as shown in FIG. 4, the distance D3 in the pouch front-back direction Y between (the outermost point of) the front mounting portion end surface 32a and (the outermost point of) the second front flange end surface 36a at the central position C is , is set within 0.5 mm.
In addition, the distance D4 in the pouch front-back direction Y between (the outermost point of) the rear mounting portion end surface 32b and (the outermost point of) the second rear flange end surface 36b at the central position C is set within 0.5 mm. It is

In addition, the distance D5 in the pouch front-back direction Y between (the outermost point of) the front side end surface of the inter-flange portion 33c and (the outermost point of) the first front side flange end surface 35a at the central position C is within 0.5 mm. Also, the distance D6 in the pouch front-back direction Y between (the outermost point of) the front side end surface of the inter-flange portion 33c and (the outermost point of) the second front side flange end surface 36a at the central position C is set within 0.5 mm.
In addition, the distance D7 in the pouch front-back direction Y between (the outermost point of) the back side end face of the inter-flange portion 33c and (the outermost point of) the first back side flange end face 35b at the central position C is within 0.5 mm. Also, the distance D8 in the pouch front-back direction Y between (the outermost point of) the front side end surface of the inter-flange portion 33c and (the outermost point of) the second rear flange end surface 36b at the central position C is set within 0.5 mm.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the scope of the present invention described in the claims. It is possible.

For example, the spouted pouch 10 may be configured by arbitrarily combining the configurations of the embodiments and modifications described above or below.
Moreover, any specific mode of the film constituting the pouch 20 may be used, and specific examples thereof include synthetic resin films such as polyester, polypropylene, polyamide, polyethylene, polybutylene terephthalate, and ethylene-vinyl alcohol copolymer. Alternatively, these synthetic resin films are laminated with known synthetic resin films such as coating films or vapor deposition films with gas barrier properties or moisture barrier properties, or synthetic resin films are formed by laminating paper or aluminum foil. and the like.

Further, in the above-described embodiment, the first flange portion 35 is formed above and adjacent to the mounting portion 32 . may be formed by
Further, in the above-described embodiment, both the first front flange end surface 35a and the first rear flange end surface 35b have the first flange bulging portion 35c. The first flange bulging portion 35c may be formed only on one of the one rear flange end faces 35b.
Further, in the above-described embodiment, the central position of the attachment portion 32, the extraction tube portion 33, the inter-flange portion 33c, the first flange portion 35, and the second flange portion 36 in the pouch left-right direction X is the central position C. Although described as matching, the central position of at least one of the mounting portion 32, the pouring tube portion 33, the flange-to-flange portion 33c, the first flange portion 35, and the second flange portion 36 extends from the central position C It may be shifted in the left-right direction X of the pouch.
Further, in the above-described embodiment, the central positions of the mounting portion 32, the pouring tube portion 33, the inter-flange portion 33c, the first flange portion 35, and the second flange portion 36 in the pouch front-back direction Y described as being aligned with the central position corresponding to the central axis of the pouring hole 32c, but the mounting portion 32, the pouring cylinder portion 33, the inter-flange portion 33c, the first flange portion 35, and the second flange At least one central position of the portion 36 may be shifted in the pouch front-back direction Y from the central position corresponding to the central axis of the pouring hole 32c.
Further, in the above-described embodiment, the flange end surfaces 35a, 35b, 36a, 36b are located outside the attachment portion end surfaces 32a, 32b in the front-back direction Y of the pouch at the central position C. At least one of the end surfaces 35a, 35b, 36a, and 36b is located at the central position C, inside the attachment portion end surfaces 32a and 32b in the front and back direction Y of the pouch, or at the same position in the front and back direction Y as the attachment portion end surfaces 32a and 32b. , may be located.
Further, in the above-described embodiment, the distances D1 to D4 are set to have the same dimensions, but the dimensional design of the distances D1 to D4 is not limited to the above. The dimensions of the distances D1 to D4 may be arbitrarily set, such as different dimensions.
When setting the dimension of the distance D1 and setting the dimension of the distance D3 to be different, it is preferable to keep the dimensional difference between the distance D1 and the distance D3 within 0.25 mm. A large setting is preferred.
Similarly, when setting the dimension of the distance D2 and setting the dimension of the distance D4 to be different, it is preferable to keep the dimensional difference between the distance D2 and the distance D4 within 0.25 mm. is preferably set large.
Further, in the above-described embodiment, the first flange portion 35 has been described as being formed in the shape shown in FIG. As a form of the first flange portion 35, a shape similar to the shape of the second flange portion 36 shown in FIG. 4 may be adopted, or as in the modification shown in FIG. may be adopted in which is not formed. In the modification shown in FIG. 5, the first front side flange end face 35a and the first rear side flange end face 35b are flat portions parallel to the pouch left-right direction X and up-down direction Z formed so as to straddle the central position C. and R portions formed at both ends of the flat portion in the left-right direction X of the pouch. Moreover, in the modification shown in FIG. 5, the above-described distances D1 and D2 are set within 0.5 mm.
Further, in the above-described embodiment, the second flange portion 36 has been described as being formed in the shape shown in FIG. As a form of the second flange portion 36, a shape similar to the shape of the first flange portion 35 shown in FIG. 3 may be adopted, and as in the modification shown in FIG. You may adopt the aspect which is not formed. In the modification shown in FIG. 5, the second front flange end surface 36a and the second rear flange end surface 36b are flat portions parallel to the pouch left-right direction X and up-down direction Z formed so as to straddle the central position C. and R portions formed at both ends of the flat portion in the left-right direction X of the pouch. Moreover, in the modification shown in FIG. 5, the above-mentioned distances D3 and D4 are set within 0.5 mm.
Moreover, as a form of the second flange portion 36, a form shown in FIG. 6 in which the above-described distances D3 and D4 are set larger than 0.5 mm may be adopted. In this case, the second flange bulging portion 36 that protrudes outward in the front-back direction Y of the pouch can prevent the fingers of the user grasping the mounting portion 32 or the first flange portion 35 from hitting the cap portion 37. In particular, even when a so-called band-split type cap portion 37 in which a TE (tamper-evident) band remains on the cap portion 37 side is employed, it is possible to prevent the user's finger from hitting the TE band. Therefore, the cap can be stably opened and closed.
Further, in the above-described embodiment, one second flange portion 36 is formed, but the number of the second flange portions 36 may be two or more. 36 need not be formed. However, when the second flange portion 36 is formed, the spouted pouch 10 can be conveyed through rails between the first flange portion 35 and the second flange portion 36, so the second flange portion 36 is preferably formed.
Further, the mounting portion end surfaces 32a, 32b of the mounting portion 32 and the flange end surfaces 35a, 35b, 36a, 36b of the flange portions 35, 36, particularly the flange end surfaces 35a, 35b of the first flange portion 35, are knurled. , anti-slip processing such as blasting may be applied.
Moreover, the front side film portion 21 and the back side film portion 22 may be composed of separate films separated from each other, or may be composed of one continuous film.

DESCRIPTION OF SYMBOLS 10... Pouch with a spout 20... Pouch 21... Front side film part 22... Back side film part 30... Spout 31... Spout main body 32... Mounting part 32a... Front side mounting part End face 32b Back side attachment end face 32c Pour-out hole 33 Pour-out cylindrical part 33a Pour-out hole 33b Screw part 33c Inter-flange part 34 Straw part 35 First flange portion 35a First front side flange end surface 35b First rear side flange end surface 35c First flange bulging portion 35d Flat portion 35e Flat portion 36 Second flange portion 36a Second front flange end surface 36b Second rear flange end surface 36c Second flange bulging portion 36d Curved surface 36e Flat portion 36f Concave curved portion 37 ... Cap portion C ... Center position X ... Pouch left-right direction Y ... Pouch front-back direction Z ... Up-down direction

Claims (4)

A spout comprising a mounting portion attached to a pouch, one or more flange portions formed above the mounting portion, and a spout hole formed in the mounting portion and extending along the vertical direction,
The spout has a spout body having the attachment portion and the flange portion, and a cap portion attached to the spout body by screw engagement,
The one or more flanges include a first flange formed at the bottom and a second flange formed above the first flange,
The mounting portion has a front side mounting portion end face facing the front side in the front and back direction of the pouch and a back side mounting portion end face facing the back side in the front and back direction of the pouch,
The first flange portion has a first front flange end face facing the front side in the front and back direction of the pouch and a first back flange end face facing the back side in the front and back direction of the pouch,
The first front flange end face is located outside the pouch front and back direction from the front mounting portion end face at a central position corresponding to the central axis of the pouring hole in the left and right direction of the pouch,
The first back flange end surface is located outside the pouch front and back direction from the back attachment portion end surface at the central position,
A distance D1 in the front and back direction of the pouch between the end face of the front mounting portion and the end face of the first front flange at the central position is set within 0.5 mm,
The distance D2 in the front and back direction of the pouch between the end face of the back side mounting portion and the end face of the first back side flange at the center position is set within 0.5 mm ,
At least one of the first front side flange end face and the first back side flange end face is located forward of the central position of the pouch in the left-right direction in the direction of relative rotation of the spout body with respect to the cap portion when the cap is opened. Having a first flange bulging portion that bulges outward in the front and back direction of the pouch only at the closer position,
The second flange portion has a second front flange end face facing the front side in the front and back direction of the pouch and a second back flange end face facing the back side in the front and back direction of the pouch,
The second front flange end surface and the second rear flange end surface project outward in the front and rear direction of the pouch at positions closer to the front side and the rear side in the rotation direction than the central position in the left and right direction of the pouch. each having a flange bulge,
Each of the second flange bulging portions has a flat portion parallel to the pouch left-right direction and vertical direction,
The flat portion is located outside the outermost portion of the first flange bulging portion of the first flange portion in the front and back direction of the pouch, or the first flange portion of the first flange portion in the front and back direction of the pouch. A spout, characterized in that it is positioned at the same position as the outermost portion of the bulging portion . A spout-equipped pouch comprising the spout according to claim 1 and a pouch having a front side film portion and a back side film portion and attached to the attachment portion,
The distance D1 is set to be equal to or greater than the thickness dimension T1 of the front film portion,
2. The spout-equipped pouch according to claim 1, wherein the distance D2 is set to be equal to or greater than the thickness dimension T2 of the back film portion. The distance D1 is set to 1.0 to 3.0 times the thickness dimension T1 of the front film portion,
3. The spout-equipped pouch according to claim 2, wherein the distance D2 is set to 1.0 to 3.0 times the thickness dimension T2 of the back film portion. A spout comprising a mounting portion attached to a pouch, one or more flange portions formed above the mounting portion, and a spout hole formed in the mounting portion and extending along the vertical direction,
The spout has a spout body having the attachment portion and the flange portion, and a cap portion attached to the spout body by screw engagement,
The one or more flanges include a first flange formed at the bottom and a second flange formed above the first flange,
The mounting portion has a front side mounting portion end face facing the front side in the front and back direction of the pouch and a back side mounting portion end face facing the back side in the front and back direction of the pouch,
The first flange portion has a first front flange end face facing the front side in the front and back direction of the pouch and a first back flange end face facing the back side in the front and back direction of the pouch,
The first front flange end surface is located inside the front mounting portion end surface in the front and back direction of the pouch at a central position corresponding to the central axis of the pouring hole in the left-right direction of the pouch, or located at the same position as
The first back side flange end face is positioned inside the back side mounting portion end face in the front and back direction of the pouch at the central position, or at the same position as the back side mounting portion end face in the front and back direction of the pouch ,
At least one of the first front side flange end face and the first back side flange end face is located forward of the central position of the pouch in the left-right direction in the direction of relative rotation of the spout body with respect to the cap portion when the cap is opened. Having a first flange bulging portion that bulges outward in the front and back direction of the pouch only at the closer position,
The second flange portion has a second front flange end face facing the front side in the front and back direction of the pouch and a second back flange end face facing the back side in the front and back direction of the pouch,
The second front flange end surface and the second rear flange end surface project outward in the front and rear direction of the pouch at positions closer to the front side and the rear side in the rotation direction than the central position in the left and right direction of the pouch. each having a flange bulge,
Each of the second flange bulging portions has a flat portion parallel to the pouch left-right direction and vertical direction,
The flat portion is located outside the outermost portion of the first flange bulging portion of the first flange portion in the front and back direction of the pouch, or the first flange portion of the first flange portion in the front and back direction of the pouch. A spout, characterized in that it is positioned at the same position as the outermost portion of the bulging portion .

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