JP6672734B2 - Packing bag with pouring aid and spout - Google Patents

Description

  The present invention relates to a pour-out auxiliary member and a packaging bag with a spout.

  A packaging bag with an elongated spout is convenient for transferring the contents of the packaging bag to another container with a narrow opening. However, if the elongated spout is composed only of the soft front and back films, the spout may wobble and spill the contents. In addition, it is difficult to take out the contents without crushing the packaging bag. Further, if the front and back films at the spout are adhered to each other, it is difficult to take out the contents.

  Therefore, it has been proposed to provide a somewhat rigid auxiliary member in the spout. Patent Literature 1 discloses a packaging bag in which a pouring auxiliary member having a bottom wall and side walls erected from both ends thereof is mounted in a pouring port. The elongate spout is stabilized by the spouting assisting member. In addition, since the film is supported from the inside by the pouring auxiliary member, the pouring port is not blocked. The contents can be taken out without crushing the packaging bag.

JP 2014-125757 A

  By supporting the film from the inside with the pouring auxiliary member, a spout (passage) through which the contents pass can be secured, but the passage of the contents is ensured by the pouring auxiliary member itself to secure the pouring port. You will be disturbed.

  An object of the present invention is to improve the content extraction efficiency (dischargeability).

  Another object of the present invention is to suppress the occurrence of wrinkles in the packaging bag (especially at or near the spout) and the damage of the packaging bag due to damage.

  The spouting assisting member according to the present invention is used by being fixed in the spouting passage of a spouting portion having an elongated spouting passage communicating with the inner space of the packaging bag formed at a part of the edge of the packaging bag. A mounting surface portion attached to the packaging bag, and two support portions protruding in the same direction from both lateral ends of the mounting surface portion in the same direction. The thickness of the supporting portion is 0.5 times or less.

  The present invention also provides a packaging bag provided with the above-described pouring auxiliary member. A packaging bag according to the present invention is provided with a packaging bag body having a front film and a back film, forming an internal space between the front film and the back film, and the front film and the back film, and communicating with the internal space. A pouring outlet provided with an elongated pouring passage, and a pouring auxiliary member fixed in the pouring passage, wherein the pouring auxiliary member is provided with a mounting surface, and both ends in the width direction of the mounting surface. And two supporting portions projecting in the same direction from each other and extending along the longitudinal direction of the pouring passage, wherein the thickness of the supporting portion is not more than 0.5 times the projecting amount of the supporting portion. Features.

  The inner space of the packaging bag body is formed by the front film and the back film. Typically, two films, a front film and a back film, are used, but the packaging bag itself can also be made by folding one film. The front film and the back film include a film portion which is located on each of the front surface and the back surface of the packaging bag body by folding one film. Further, the packaging bag body may be formed from three or more films. For example, by adding a bottom film for forming a gore at the bottom, a packaging bag body can be formed from three films, a front film, a back film, and a bottom film.

  The packaging bag main body is provided with a spout portion having an elongated spout passage communicating with the internal space thereof, and the spout assisting member is fixed in the spout passage of the spout portion. It goes without saying that the width of the pouring auxiliary member is smaller than the passage width of the pouring passage. The length of the pouring auxiliary member has a length corresponding to the length of the pouring passage, but may be longer than the pouring passage. The pouring auxiliary member includes a mounting surface portion and two support portions protruding in the same direction from both ends in the width direction of the mounting surface portion. Since the surface of the mounting surface opposite to the surface on which the support protrudes is mounted on the back film, the front film is supported from the inside by the two supports protruding from the mounting surface. A space (gap) is always secured in the pouring passage at the pouring port.

  In order to increase the flow rate of the contents flowing through the pouring passage per unit time and improve the dischargeability of the contents, the cross-sectional area of the pouring passage may be increased. To increase the cross-sectional area of the pouring passage, increase the height of the supporting part by increasing the height of the supporting part, and increase the height of the pouring auxiliary member so that the pouring passage at the pouring outlet has a circular cross section. Can be considered. However, when the height of the spouting auxiliary member is increased, the force in the direction in which the front and rear films forming the spout portion move away from each other acts strongly, causing floating in the sealing area of the spout portion and narrowing of the seal width. It will happen. In particular, when the packaging bag is manufactured at a high production rate, the floating and the narrowing of the seal width are likely to occur. If there is a floating or narrow seal width, it is treated as defective. The larger the protrusion amount and the higher the production speed, the higher the incidence of defective products. There is a limit to increasing the flow rate by increasing the height of the extraction assisting member.

  In order to increase the flow rate without increasing the height of the pouring auxiliary member, the pouring auxiliary member is designed so that the thickness of the supporting portion is not more than 0.5 times the projecting amount of the supporting portion. ing. The area (cross-sectional area) occupied by the pouring assistant in the pouring passage in the pouring passage can be reduced, and the pouring passage at the pouring port can be made large. The flow rate of the contents flowing through the pouring passage per unit time can be increased, and the efficiency of taking out the contents (discharge performance) is improved.

  In one embodiment, the width of the mounting surface is larger than the height of the pouring assistant, which is the thickness of the mounting surface plus the protrusion of the support. Thus, the overall shape of the cross section of the pouring passage has a substantially elliptical shape having a longitudinal direction in the width direction of the pouring auxiliary member. A large force is not applied to the front film and the back film that form the spout in the direction in which they are separated from each other, so that wrinkling of the film and tearing of the packaging bag can be suppressed.

  Preferably, in the pouring assistant, all edges of the support portion and all edges of the mounting surface are convexly curved. Even when any part of the pouring auxiliary member comes into contact with the front or back film when the pouring auxiliary member is attached to the spout, damage to the front and back films is suppressed.

  In a preferred embodiment, the pouring auxiliary member is formed of a synthetic resin having mechanical strength that does not collapse when mounted in the pouring passage. It is suppressed that the space of the pouring passage is narrowed due to the deformation of the pouring auxiliary member.

It is a front view of a pouch bag with a spout. FIG. 2 is a sectional view taken along the line II-II in FIG. 1. FIG. 3 is an enlarged end view along the line III-III in FIG. 1. It is an expansion perspective view of a pouring assistance member. It is a cross-sectional view of the pouring assistance member of the embodiment. It is a cross-sectional view of a pouring assistance member of a comparative form.

  FIG. 1 is a partially cutaway front view of a pouch bag (packaging bag) with a spout before filling the contents. In FIG. 1, a range indicated by a fine dot pattern on the periphery of the pouch bag is a sealing range. FIG. 2 is a sectional view taken along the line II-II in FIG. In FIG. 2, for the sake of simplicity, the upper part is opened, the state in which the distance between the front and back films described later is slightly widened is shown, and the thickness of the film is emphasized. FIG. 3 is an enlarged end view taken along the line III-III of FIG. FIG. 4 is an enlarged perspective view of a pouring auxiliary member described later.

  The pouch bag 1 with a spout includes a pouch bag main body 10 and a pouring auxiliary member 30.

  The pouch bag body 10 has a cylindrical shape having a vertically long rectangular shape with four rounded corners as a whole when viewed from the front, and has a front film 11 and a back film 12 forming the front and back surfaces thereof. This is a so-called bottom gusset type (standing type) including a bottom film 13 forming a gore portion at the bottom. The front, back and bottom films 11, 12 and 13 constituting the pouch bag main body 10 are each composed of one film (seamless film). The outer edges of the front and back films 11, 12 are sealed to each other on both sides of the pouch bag main body 10, and the outer edge of the bottom film 13 and the outer edges of the front and back films 11, 12 are mutually sealed below the pouch bag main body 10. Sealed. Sealing is performed by bonding (including welding) between the films. Before filling the contents, only the upper part of the pouch bag main body 10 is open, and the bottom film 13 is folded in a mountain fold at the center thereof, and is sandwiched between the front film 11 and the back film 12 .

  The contents are filled from the top of the opened pouch bag main body 10. In general, other liquids such as cosmetics such as lotion and milky lotion, foods such as water, juice, soy sauce, vinegar, oil, and dressing, chemicals such as disinfectants, shampoos and rinses are filled. Of course, any powdery or granular material may be filled as long as it passes through the passage of the spout 20 described later.

  When the contents are filled, the bottom film 13 is unfolded and gradually spreads downwardly. The distance between the front film 11 and the back film 12 gradually increases, and the internal space increases. After the contents are filled, the upper surface film 11 and the lower surface film 12 of the opened pouch bag main body 10 are bonded to each other, whereby the contents are sealed in the pouch bag main body 10. Further, the pouch bag 1 filled with the contents can be made independent by the lower edge portions of the front film 11 and the back film 12.

  The front, back and bottom films 11, 12, 13 are each composed of a laminated film having at least a base material layer and a sealant layer. As a material constituting the base layer, polyethylene terephthalate, nylon, polypropylene, or the like can be used. As a material for forming the sealant layer, polyethylene, polypropylene, or the like can be used. A printing layer, a support layer, a barrier layer, and the like can be further laminated between the base material layer and the sealant layer, if necessary. Paper or the like can be used for the printing layer. The same plastic, paper, or the like as the base layer can be used for the support layer. For the barrier layer, a metal foil such as an aluminum foil, an inorganic substance such as aluminum, an inorganic oxide such as silicon oxide and aluminum oxide, or the like can be used. 2 and 3, the front film 11, the back film 12, and the bottom film 13 are shown as a single layer for simplicity.

  The shape of the pouch bag main body 10 is not limited to a square shape when viewed from the front, and may be a circle, an ellipse, a triangle, or another shape. In addition, when independence is not required, the pouch bag main body 10 may adopt a three-side seal type, a back seal type, a four-side seal type, or other forms. In the case of the three-side seal type and the back seal type, a bag can be formed by folding a single film. Even when the pouch bag main body 10 is formed of a single film, the form of the pouch bag main body 10 is considered to be composed of both front and rear (or front and back) films. be able to. The four-sided seal type can be formed from two films, a front film 11 and a back film 12.

  At the corner between the left side and the upper part when the pouch bag main body 10 is viewed from the front, a spout 20 is formed which is slender and protrudes obliquely upward. The shape and orientation of the spout 20 is defined by, but not limited to, two inward cutouts 21 formed on both sides thereof. The front film 11 and the back film 12 are adhered at the periphery of the spout 20, and inside the spout 20 there is an elongated space (pouring passage) connected to the internal space of the pouch bag main body 10. Instead of the corners of the pouch bag main body 10, the spout 20 can be formed at the center, the side, etc. of the upper part of the pouch bag main body 10. It is also possible to form a plurality of outlets 20.

  A rather wide knob 22 is formed continuously at the tip of the spout 20. Except for a part connected to the spout 20, the knob 22 is composed of the front and back films 11 and 12 bonded to each other. A notch 23 is formed at the tip of the spout 20 and a half-cut line 24 starting from the notch 23 and not penetrating the front and back films 11 and 12 forms a front and back film at the tip of the spout 20. 11 and 12 are formed. It is preferable to form a plurality of half-cut line portions 24 in advance. By gripping the knob 22 with a finger and pulling the knob 22 along the half-cut line 24, the notch 22 can be easily torn along the half-cut line 24 triggered by the notch 23. When the knob 22 is torn, the internal space of the pouch bag main body 10 communicates with the outside through the spout passage of the spout 20.

  A pouring assistance member 30 is mounted in the pouring port 20.

  The pouring auxiliary member 30 is made of polyethylene, such as low-density polyethylene, medium-density polyethylene, and polypropylene. In particular, it is preferable to use low-density polyethylene, linear low-density polyethylene, or a blend of low-density polyethylene and linear low-density polyethylene. For example, a long spouting auxiliary member is formed by extrusion molding, and cut into a required length, whereby the spouting auxiliary member 30 attached in the spout 20 is made. The pouring auxiliary member 30 has such a mechanical strength that it is not crushed (does not deform) when mounted in the pouring port 20.

  With reference to FIGS. 1, 3 and 4, the spouting assisting member 30 includes a mounting surface portion 31 having a rectangular flat plate shape, and a mounting surface portion 31 from each of both lateral ends of the mounting surface portion 31 in the width direction. And two support portions 32 protruding in the same direction over the entire length in the longitudinal direction of the camera. The amount of protrusion of the two supports 32 is preferably the same, but slight differences are allowed. Although slightly, the two support portions 32 do not protrude in parallel with each other, but are inclined to approach each other. This is because, when the two support portions 32 are inclined away from each other, the mounting surface portion 31 is likely to bend in a convex shape in the direction in which the support portions 32 protrude, or the force applied to the surface film 11 is increased, and This is to suppress the possibility of damage or tearing. As described above, since the pouring auxiliary member 30 is made by extrusion molding, the mounting surface portion 31 and the two support portions 32 are integrated.

  Flanges 34 slightly projecting laterally are formed on both sides of the mounting surface 31 in the longitudinal direction. The flange portion 34 can prevent the mounting surface portion 31 from being warped convexly in the direction in which the support portion 32 projects, and can easily fix the mounting surface portion 31 to the back film 12. However, the flange portion 34 is not always necessary and can be removed.

  The mounting surface 31, the support portion 32, and the flange 34, that is, the entire auxiliary pouring member 30, have rounded edges. That is, the spouting auxiliary member 30 does not have any sharp edges. For example, the top of the support portion 32, the side ends of both ends of the support portion 32, the end of the flange portion 34, and the end of the mounting surface portion 31 All of them are smoothly curved outward (outward). Therefore, no matter which part of the pouring auxiliary member 30 comes into contact with the front and back films 11 and 12, it is possible to prevent the front and back films 11 and 12 from being damaged by the pouring auxiliary member 30.

  A surface (hereinafter, referred to as an outer surface) of the mounting surface portion 31 constituting the pouring auxiliary member 30 opposite to a surface (hereinafter, referred to as an inner surface) from which the two support portions 32 protrude is connected to the spout outlet portion 20 (pouch bag body). By bonding (including welding) to the inner surface of the back film 12 constituting 10), the pouring auxiliary member 30 is attached to the inside of the pouring port 20. A part of the outer surface of the mounting surface 31 may be bonded to the inner surface of the back film 12, or the entire outer surface of the mounting surface 31 may be bonded to the inner surface of the back film 12. The outer surface of the mounting surface 31 is flat or has a modestly concave shape. That is, it is preferable that the outer surface of the mounting surface portion 31 is not outwardly convex. This is to make it easy to firmly attach the outer surface of the attachment surface portion 31 to the inner surface of the back film 12. The mounting surface portion 31 having a gentle recess is formed to be slightly thin at the center in the width direction (see FIG. 3).

  The tip of the pouring auxiliary member 30 (the outwardly facing portion in the state of FIG. 1) is located at a position where the notch 23 starts and does not become an obstacle when the knob 22 is torn. The other end of the spouting assisting member 30 (the inwardly facing gutter in the state of FIG. 1) is located inside the pouch bag main body 10 near the spouting portion 20.

  Since the outer surface of the mounting surface portion 31 is adhered to the inner surface of the back film 12, the auxiliary pouring member 30 is fixedly disposed inside the spout portion 20, and two support portions 32 projecting from the opposite inner surface are formed. It faces the direction of the surface film 11. The top film of the two support portions 32 projecting from the mounting surface portion 31 supports (lifts) the surface film 11 from the inside thereof, so that the spout portion 20 always keeps the opening state of the spout passage through which the contents pass. You. Referring to FIG. 3, the pouring passage (opening) formed in the pouring opening 20 by the front and back films 11 and 12 has a cross section in the width direction of the pouring auxiliary member 30 as a whole. It has an elliptical shape with a longitudinal direction. More specifically, the spouting passage formed in the spouting portion 20 has a relatively wide passage 26 having a substantially rectangular cross section sandwiched by the two support portions 32, and is located outside each of the two support portions 32. And two passages 27A and 27B each having a substantially triangular cross section. The contents in the pouch bag main body 10 are discharged through these passages 26, 27A, 27B. Further, since air enters the pouch bag main body 10 through these passages 26, 27A, 27B, the contents in the pouch bag main body 10 can be smoothly taken out.

  Referring to FIG. 4, length L, width (distance between outer surfaces of two support portions 32) W <b> 1, thickness T <b> 2 (thickest portion), and support portion 32 The protrusion amount (height) H1 is determined according to the dimensions of the pouch bag main body 10 and the spout 20. However, when the spout 20 (FIG. 1) is formed so as to protrude slightly from the edge of the pouch bag body 10 to the outside, the spout assisting member 30 has the longest length L (width W1). 2.0 times or more, preferably 4.0 times or more), and the width W1 of the mounting surface portion 31 is equal to the height H of the pouring auxiliary member 30 (the protrusion amount H1 of the support portion 32 and the thickness T2 of the mounting surface portion 31). The sum has a shape larger than the sum.

  First, the outer surface of the mounting surface portion 31 of the auxiliary pouring member 30 is adhered to a portion of the inner surface of the back film 12 which constitutes the spout portion 20, and then the surface film 11 is covered therefrom to seal the periphery. A spout 20 with a dispensing aid 30 is made. As described above, by making the width W1 of the mounting surface portion 31 larger than the height H of the pouring auxiliary member 30, the force applied to the surface film 11 pushed outward by the support portion 32 can be kept small.

  Needless to say, the width W1 of the mounting surface 31 is smaller than the width of the spout 20 and the passage width of the spout passage (the distance between two places where the front film 11 and the back film 12 start to separate in FIG. 3). For example, if the width of the spout 20 is about 18 mm, the width W of the pouring auxiliary member 30 is about 6.0 mm.

  In order to increase the flow rate of the contents flowing through the discharge passages 26, 27A, 27B per unit time, the sectional area of the discharge passages 26, 27A, 27B may be increased. In order to increase the cross-sectional area of the pouring passages 26, 27A and 27B, the projecting amount H1 of the supporting portion 32 is increased (increased), the height H of the pouring auxiliary member 30 is increased, and It is conceivable to make the cross section more circular. However, when the height H of the spouting assisting member 30 is increased, a force in a direction away from the front surface and the back film 11, 12 forming the spouting portion 20 acts strongly, and floats in the sealing area on both sides of the spouting portion 20. And the seal width is reduced. In particular, when the pouch bag 1 is manufactured at a high production speed, floating or narrowing of the seal width is apt to occur, and if floating or narrowing of the seal width occurs, it is treated as a defective product. The higher the height H of the pouring auxiliary member 30 and the higher the production speed, the higher the incidence of defective products. There is a limit to increasing the flow rate by increasing the height H of the dispensing auxiliary member 30.

  In order to increase the flow rate without increasing the height H of the pouring auxiliary member 30, the pouring auxiliary member 30 has a thickness T1 (the thickest portion) of the supporting portion 32 with respect to the projecting amount H1 of the supporting portion 32. It is designed to be 1.0 times or less, preferably 0.5 times or less. For example, the thickness T1 of the support portion 32 has a dimension of 1.5 mm or less, preferably 1.2 mm or less. By reducing the thickness of the support portion 32, the cross-sectional area of the pouring passage 26 is increased, whereby the flow rate of the contents flowing through the pouring passages 26, 27A, 27B per unit time can be increased. Further, the thickness T2 (the thickest portion) of the mounting surface portion 31 with respect to the width W1 may be 0.2 times or less, preferably 0.15 times or less. Specifically, for example, the thickness T2 of the mounting surface portion 31 has a size of 1.5 mm or less, preferably 1.0 mm or less.

  The width W (distance between the outer surfaces of the two flange portions 34) of the pouring auxiliary member 30 is the width of the pouring port 20 and the passage width of the pouring passage (in FIG. 3, the front film 11 and the back film 12 begin to separate). It is needless to say that the distance is smaller than the distance between the two points). The width W1 of the mounting surface portion 31 with respect to the width W of the dispensing auxiliary member 30 is preferably 0.6 times or more, and more preferably 0.8 times or more. The width W of the auxiliary ejection member 30 is preferably 10.0 mm or less, and more preferably 7.0 mm or less. By reducing the width W of the auxiliary pouring member 30, the allowable range when attaching the auxiliary pouring member 30 to the back film 12 can be increased, so that the productivity can be increased. In addition, since the distance between the seal portion forming the outlet 20 and the auxiliary discharging member 30 can be increased, wrinkles may be generated in the outlet 20 or air bubbles may be generated in the seal forming the outlet 20. Can be suppressed. For example, if the width of the spout 20 is about 18 mm, the width W of the auxiliary pouring member 30 is about 7.0 mm.

  FIG. 5 is an enlarged cross-sectional view of the pouring assistance member 30 of the embodiment, and shows specific dimensions of the pouring assistance member 30. FIG. 6 is an enlarged cross-sectional view of the pouring assistance member 40 of the comparative example, in which specific dimensions of the pouring assistance member 40 are also shown. For the structure (cross-sectional shape) of the pouring auxiliary member 40 of the comparative example, refer to JP-A-2014-122057 (particularly, FIG. 13). Each of the pouring auxiliary members 30 and 40 was manufactured by extruding a blend resin of low-density polyethylene and linear low-density polyethylene. Further, the length L of each of the pouring assistants 30 and 40 was set to 25.0 mm.

  The spouting auxiliary member 30 (FIG. 5) of the embodiment has a protrusion H1 of the support portion 32 of 2.0 mm, a thickness T1 of the support portion 32 of 0.9 mm, and a width W1 of the mounting surface portion 31 of 5.7 mm. The thickness T2 of the surface portion 31 (the thickness of the thickest portion) is 0.8 mm, the thickness T3 of the thin portion of the mounting surface portion 31 is 0.6 mm, the protrusion amount W2 of the flange portion 34 is 0.7 mm, and the pouring auxiliary member. The width W of 30 (the length from one flange portion 34 to the other flange portion 34) is 6.8 mm, and the height H of the auxiliary pouring member 30 (the protrusion amount H1 of the support portion 32 and the thickness of the mounting surface portion 31). T2) was set to 2.8 mm.

  A pouch bag 1 with a spout (FIG. 1) to which a pouring auxiliary member 30 was attached was prepared, filled with 300 ml of water, and sealed. When the knob 22 was torn and the pouch bag 1 was tilted to discharge water, the time required until the entire amount was discharged was 32.8 seconds.

  The conventional pouring auxiliary member 40 of the comparative example (FIG. 6) is manufactured such that the protruding amount H1 of the supporting portion 42 is the same dimension (2.0 mm) as the protruding amount H1 of the supporting portion 32 of the pouring auxiliary member 30. did. Specifically, the protrusion amount H1 of the support portion 42 is 2.0 mm, the thickness T1 of the support portion 42 is 1.6 mm, the width W1 of the mounting surface portion 41 is 5.8 mm, and the thickness T2 of the mounting surface portion 41 is 0. 6 mm, the thickness T3 of the thin portion of the mounting surface portion 41 is 0.4 mm, the protrusion amount W2 of the flange portion 44 is 1.0 mm, and the width W of the pouring auxiliary member 40 (from one flange portion 44 to the other flange portion 44). Is 7.5 mm, and the height H of the auxiliary pouring member 40 is 2.6 mm. This was attached to a pouch bag (the same as in FIG. 1), and the time required for discharging 300 ml of water was measured in the same manner as in the example. The time required for discharging the entire amount was 35.2 seconds.

  The thickness T1 (0.90 mm) of the projecting amount H1 (2.0 mm) of the support portion 32 of the pouring auxiliary member 30 in the embodiment is 0.45 times. On the other hand, the thickness T1 (1.6 mm) of the protrusion amount H1 (2.0 mm) of the support portion 42 of the pouring assistant 40 of the comparative example is 0.8 times. Considering that the protrusion amount H1 of the support portion 32 is not increased, the thickness T1 of the support portion 32 is reduced, that is, 0.8 times or less of the protrusion amount H1, and 0.5 times or less considering a significant time reduction. By doing so, it was possible to shorten the time required for taking out the contents.

1 Pouch bag with spout (packing bag with spout)
10 Pouch bag body (packaging bag body)
11 Surface film
12 Back film
13 Bottom film
20 Outlet
26, 27A, 27B Injection passage
30 Pouring aid
31 Mounting surface
32 Support

Claims (4)

A spouting auxiliary member fixed and used in the spouting passage of a spouting portion provided with an elongated spouting passage communicating with an internal space of the packaging bag formed at a part of an edge of the packaging bag,
A mounting surface portion to be mounted on the packaging bag, two support portions projecting in the same direction from both ends in the width direction of the mounting surface portion, and slightly protruding laterally from both longitudinal sides of the mounting surface portion. With two flanges,
The thickness of the support portion is 0.5 times or less the protrusion amount of the support portion,
Width W1 of the mounting surface is above 0.8 times the width W of the dispensing auxiliary member,
The whole of the two support parts is inclined so as to approach each other,
Has mechanical strength that does not deform when fixed in the above-mentioned pouring passage,
Pouring aid. The width of the mounting surface is greater than the protrusion of the support,
The pouring auxiliary member according to claim 1. All edges of the support and all edges of the mounting surface are convexly curved,
The pouring auxiliary member according to claim 1 or 2. A packaging bag body that includes a front film and a back film and forms an internal space between the front film and the back film, and an elongated discharge passage that is formed by the front film and the back film and communicates with the internal space. A pouring port, and a pouring auxiliary member fixed in the pouring passage,
The above-mentioned pouring auxiliary member is
A mounting surface portion, two support portions projecting in the same direction from both ends in the width direction of the mounting surface portion and extending in the longitudinal direction of the pouring passage, and laterally extending from both longitudinal sides of the mounting surface portion. With two slightly projecting flanges
The thickness of the support portion is 0.5 times or less the protrusion amount of the support portion,
Width W1 of the mounting surface is above 0.8 times the width W of the dispensing auxiliary member,
The whole of the two support portions is inclined so as to approach each other in a state where the two support portions are not fixed in the pouring passage,
Has mechanical strength that does not deform when fixed in the above-mentioned discharge passage;
Packaging bag with spout.

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