JP6889994B2 - Packaging bag with spout - Google Patents

Description

The present invention relates to a packaging bag with a spout.

Conventionally, a packaging bag provided with a spout is widely used, for example, in a packaging bag (pouch) for accommodating refillable contents in order to facilitate pouring of the contents. Such a packaging bag is manufactured by performing various processes while intermittently or continuously transporting a base material such as a resin film. However, in the conventional packaging bag, since the spout is made of a base material, the shape of the spout is not stable only by maintaining the flow path, and the refilling work is not easy.

Therefore, for example, Patent Documents 1 to 3 disclose a pouch with a spout. By using a molded product for the spout, the shape of the spout becomes stable, and by inserting it into the bottle side, refilling work can be easily performed.

Japanese Patent No. 4828413 Japanese Patent No. 4397616 Japanese Patent No. 3142681

However, since the spout has threads, it can only be used for bottles having an injection port with a diameter larger than the spout diameter. On the other hand, a configuration using a straw without threads as the spout has been proposed, but in this configuration, the flow path of the spout is not formed by the straw, but flows between the film-like substrates. Since it was used as an auxiliary member for forming a path, the contents also flowed out from around the straw (between the straw and the base material). There is a seal portion of the base material around the straw, which causes a problem that it interferes with inserting the injection port of the packaging bag into the injection port of the bottle.

The present invention has been made in view of the above-mentioned problems of the prior art, and it is possible to increase the types of refillable bottles and improve the efficiency of the refilling work by making better use of the shape of the flow path forming member. One of the purposes is to provide a packaging bag with a spout.

The packaging bag with a spout according to one aspect of the present invention is a packaging bag with a spout having a flow path forming member at the spout, and is provided around a pair of films to be overlapped with each other and the pair of films. The first sealing portion, the accommodating portion formed in the unsealed portion of the pair of films and accommodating the contents, the flow path forming member arranged between the pair of films, and the pair of films. An opening auxiliary line formed and extending so as to intersect in the length direction of the flow path forming member, and the pair of opening auxiliary lines provided in a ring shape in a part of the length direction of the flow path forming member in the circumferential direction. A second sealing portion for the film is provided, and a plurality of the second sealing portions are provided in the length direction of the flow path forming member.

The packaging bag with a spout according to one aspect of the present invention may be configured to be provided with a point seal for adhering one of the pair of films to the flow path forming member.

In the packaging bag with a spout according to one aspect of the present invention, the second seal portion may be formed so as to intersect the point seal provided along the length direction of the flow path forming member. Good.

The packaging bag with a spout according to one aspect of the present invention may have a structure in which the tips of the flow path forming members are exposed from the pair of films after opening.

In the packaging bag with a spout according to one aspect of the present invention, the opening auxiliary line may be formed so as to cross over the flow path forming member excluding the second seal portion.

In the packaging bag with a spout according to one aspect of the present invention, the spout may be provided so as to face diagonally upward from the accommodating portion.

The packaging bag with a spout according to one aspect of the present invention may be configured to include a sealant layer containing a biomass-derived polyolefin in the film.

The present invention can provide a packaging bag with a spout that can increase the types of refillable bottles by making better use of the shape of the straw and improve the efficiency of the refilling work.

The plan view which shows the structure of the packaging bag with a spout. The figure which shows the structure near the pouring outlet of a packaging bag in an enlarged manner. FIG. 2 is a cross-sectional view taken along the line AA in FIG. The plan view which shows the packaging bag after opening. A flowchart for explaining a method of manufacturing a packaging bag with a spout. The figure which shows the structure of the bag making machine for continuously manufacturing a packaging bag with a spout. (A) and (b) are diagrams for explaining the point sealing process. The perspective view which shows the mold used in the flow path forming member sealing process. The figure which shows the relationship between the pressing part of a die and a flow path forming member. (A) and (b) are diagrams for explaining the flow path forming member sealing process. The figure for demonstrating the flow path forming member sealing process. The figure for demonstrating the flow path forming member sealing process. The figure which shows an example of how to use a packaging bag.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each drawing used in the following description, the scale of each member is appropriately changed in order to make each member recognizable.

[Packaging bag]
FIG. 1 is a plan view showing the configuration of the packaging bag 5 with a spout in the present embodiment. FIG. 2 is an enlarged view showing the configuration of the packaging bag 5 in the vicinity of the spout.
As shown in FIG. 1, the packaging bag 5 of the present embodiment has two body film (films) 2 and 2 having the same planar shape and a bottom portion folded in half around a folding line 3a. It is a standing pouch composed of a film 3.

As shown in FIG. 1, the bottom film 3 is folded so that the folding line 3a faces inward and is interposed between the lower portions of the pair of body films 2 and 2. The pair of body films 2 and 2 and the bottom film 3 are overlapped with each other, and the peripheral edges of the body films 2 and 2 are heat-sealed to be integrally formed except for the filling port 13. Specifically, in the packaging bag 5, the side end sealing portions 5b and 5b formed by sealing the left and right side ends, and the lower side and the bottom film 3 of the body film 2 and 2 face each other. It has a bottom sealing portion 5a formed by sealing the lower end edges of the facing surfaces with each other. In FIG. 1, hatching is added to clearly indicate the range of the seal portion.

The filling port 13 located on the upper end side of the body films 2 and 2 is open for filling the contents, and the contents can be filled in the accommodating portion 1a of the packaging bag 5 through the filling port 13. It is possible. After the contents are filled in the accommodating portion 1a formed in the first unsealed portion (unsealed portion) 15A, the filling port 13 is closed by sealing in the same manner as the other portions. To. The first unsealed portion 15A is a portion in which the body film 2 and 2 are separably overlapped with each other without being sealed (bonded or joined). After the contents are filled in the accommodating portion 1a, the bottom film 3 is pushed downward by the weight of the contents, so that the bottom area is increased and the packaging bag 5 can stand.

As shown in FIG. 1, between the upper corner portion of the packaging bag 5, that is, the upper side 14a and the side side 14b, a second unsealed portion 15B serving as a flow path for the spout 14 is provided from the accommodating portion 1a to the packaging bag. It is provided so as to face diagonally upward of 5.

The side seal portions (first seal portions) 15a and 15b partition both side portions of the flow path when the tip portion of the spout 14 is removed to open the flow path, and one side seal portion is provided. The flow path forming member 4 arranged in the second unsealed portion 15B between the 15a and the other side sealing portion 15b serves as the flow path of the spout 14. Examples of the flow path forming member 4 include a cylindrical straw and the like. The tip of the second unsealed portion 15B is closed by the sealing sealed portion (first sealed portion) 15c.

Such a flow path forming member 4 is arranged so that its length direction is along the flow path direction C shown in FIG. 1, and is partially formed on at least one body film 2 by the point seal 19 shown in FIG. It is heat-welded and fixed.

The flow path forming member 4 of the present embodiment is further fixed to the body film 2 and 2 by two second seal portions 25 and 25. The second seal portions 25, 25 are formed in at least a part of the length direction of the flow path forming member 4 along the circumferential direction thereof.
Each of the second sealed portions 25, 25 is formed by the pair of body film 2 and 2 being in close contact with the outer peripheral surface of the flow path forming member 4 without a gap, so that the first unsealed portion 15A and the second unsealed portion 15A are formed. The portion 15B is in a state of communicating with the flow path forming member 4. The region of the flow path forming member 4 other than the areas where the second seal portions 25 and 25 are formed is not adhered to the body film 2 and 2. The tip 4a of the flow path forming member 4 is exposed in the second unsealed portion 15B and is not adhered to the body film 2 and 2. The widths and arrangement intervals of the second seal portions 25, 25 are appropriately set.

The spout 14 is provided with an opening auxiliary line 9 formed so as to cross the flow path forming member 4 serving as a flow path and the second unsealed portion 15B in order to facilitate opening. The opening auxiliary line 9 is formed inside the flow path forming member 4 in the length direction so that the tip 4a of the flow path forming member 4 is exposed from the body films 2 and 2 at the time of opening.

Further, the spout 14 is further provided with a tab 16a formed by a cutout line 17a on one end side of the opening auxiliary line 9 and a tab 16b formed by a cutout line 17b on the other end side of the opening auxiliary line 9. Has been done. When tab 16a and tab 16b are not distinguished in the following description, they may be simply referred to as tab 16.

The opening auxiliary line 9 intersects and extends in the length direction of the flow path forming member 4. The opening auxiliary line 9 is formed so as to cross the flow path forming member 4 in the region other than the second seal portions 25 and 25 in the radial direction, and the opening auxiliary line 9 is formed so as to cross the cutout line 17a on one side and the cutout line 17a on the other side. By connecting to the wire 17b, the tab 16 can be separated at the time of opening (FIG. 4). The opening auxiliary line 9 is provided on each of the two body films 2 and 2 including the spout 14.

Such an opening auxiliary line 9 is composed of a half-cut line. The half-cut line has a structure in which a part of the body film 2 in the thickness direction is continuously cut in the length direction. Since the body film 2 is connected at least in a part in the thickness direction, the contents do not leak through the half-cut line before opening. The range in which the opening auxiliary line 9 is formed in the thickness direction of the body film 2 is not particularly limited, but it is preferable that the cut portion is not exposed inside or outside (one or both) of the body film 2. Laser processing can be mentioned as a method of forming a half-cut line inside the body film 2. Examples of a method for forming a half-cut line on the surface of the body film 2 include laser machining and a cutting tool.

The dimensions of the packaging bag 5 are not particularly limited, but the suitable range for the refill container is that the height (length in the Y direction) of the packaging bag 5 is about 100 to 500 mm and the width of the packaging bag 5 (both sides). The maximum width between the ends: the length in the X direction) is about 70 to 300 mm, and the filling amount of the contents is about 100 to 5000 cm ³ . The content is not particularly limited, and examples thereof include a liquid substance, a solid such as a powder or a granule, a viscous substance, a liquid, or a mixture thereof.

As the film used as the body film 2 and the bottom film 3, a film made of, for example, biaxially stretched polypropylene, biaxially stretched polyamide, biaxially stretched polyester, etc. is used as a base film 29, and these are used. A laminate 20 (FIG. 6) in which a polyolefin-based resin such as low-density polyethylene, linear low-density polyethylene, ethylene-vinyl acetate copolymer, or polypropylene is laminated as a sealant film 18 is used on the base film 29 of the above.

As an example, in the sealant film 18, the inner sealant layer 18A (FIG. 6) inside the packaging bag 5, the intermediate sealant layer, and the base material side sealant layer which is a layer in contact with the base material film are laminated in this order. It can be a laminated film having a three-layer structure. Of the three layers, the inner sealant layer 18A can also contain a polyolefin-based resin derived from biomass. For example, the inner sealant layer 18A can contain 50% or more and 100% or less of a polyolefin-based resin derived from biomass.

The base film 29 may be a single layer or a laminate, and may be a polyethylene terephthalate (PET) resin film, a polyamide (PA) resin film, a polyethylene naphthalate (PEN) resin film, a polyacrylonitrile (PAN) resin film, or a polycarbonate (PC). A resin film, a polyimide (PI) resin film, or the like can be used. Further, a vapor deposition layer, a metal leaf, a printing layer, and a functional layer can be included.

Examples of the method for producing the laminated body 20 include a dry laminating method, an extrusion laminating method, and a coextrusion method. An adhesive, an anchoring agent, or the like can be provided between the base film 29 and the sealant film 18 in order to improve the adhesive strength. In this case, a plurality of base films may be laminated in order to increase the strength of the packaging bag 5. Alternatively, in order to enhance the barrier property of gas and ultraviolet rays, a metal foil such as an aluminum foil, a metal vapor deposition layer, an inorganic vapor deposition layer such as ceramic, an ethylene-vinyl alcohol copolymer film, or the like may be laminated.

(Structure near the spout)
Next, the structure near the spout of the packaging bag 5 will be described in detail. In the following description, FIGS. 1 and 2 will be referred to as appropriate. FIG. 3 is a cross-sectional view taken along the line AA in FIG. FIG. 4 is a plan view showing the packaging bag 5 after opening.

As shown in FIGS. 1 and 2, in the present embodiment, the ring-shaped second seal portion is closer to the end portion 4b on the first unsealed portion 15A side than the central portion in the length direction of the flow path forming member 4. Two 25, 25 are provided at predetermined intervals in the length direction of the flow path forming member 4, and the tips 4a side of the second sealed portions 25, 25 are exposed in the second unsealed portion 15B. It has become.

At the locations where the second seal portions 25, 25 are formed, as shown in FIG. 3, the body film 2 and 2 are in close contact with each other in the circumferential direction of the flow path forming member 4, respectively, and the flow path forming member 4 There is no gap between the outer peripheral surface of the body and the body films 2 and 2.
The number of the second seal portions 25 is not limited to two, and three or more may be provided.

As shown in FIG. 2, the opening auxiliary line 9 of the present embodiment is provided so that a predetermined length of the flow path forming member 4 is exposed from the pair of body films 2 and 2 after opening (FIG. 4). The position is set. Specifically, the position of the opening auxiliary line 9 is set so as to be located within a range of 20% or more and 50% or less from the tip 4a of the flow path forming member 4 in the length direction of the flow path forming member 4. As a result, of the total length of the flow path forming member 4, the length of 20% or more and 50% or less from the tip 4a is exposed from the body films 2 and 2 after opening (FIG. 4).

[Manufacturing method of packaging bag with spout]
Next, a method for manufacturing a packaging bag with a spout according to the present invention will be described.
FIG. 5 is a flowchart for explaining a method of manufacturing the packaging bag 5 with a spout according to the present embodiment. FIG. 6 is a diagram showing a configuration of a bag making machine 10 for continuously manufacturing a packaging bag 5 with a spout. 7 (a) and 7 (b) are diagrams for explaining the point sealing step S4. FIG. 8 is a perspective view showing a mold used in the flow path forming member sealing step S5. FIG. 9 is a diagram showing the relationship between the pressing portion of the mold and the flow path forming member. 10 (a) and 10 (b) are views for explaining the flow path forming member sealing step S5. FIG. 11 is a diagram for explaining the flow path forming member sealing step S5. FIG. 12 is a diagram for explaining the flow path forming member sealing step S5.

As shown in FIG. 5, the manufacturing method of the packaging bag 5 with a spout of the present embodiment includes a recess forming step S1, a laminated body compounding step S2, a flow path forming member supply step S3, a point sealing step S4, and a flow path forming. The member sealing step S5, the vertical / horizontal sealing step S6, and the separation step S7 are mainly carried out. In this embodiment, the flow path forming member sealing step S5 will be described in detail.

(1) Recess forming step S1
First, recesses 24, 24 for arranging the flow path forming members 4, 4 are formed in the laminated body 20 unwound from the feeding roll 21. Specifically, the preheating portion 49a in the recess forming means 49 preheats the arrangement region of the flow path forming member 4 at predetermined intervals along the transport direction of the laminated body 20, and the recess forming portion 49b forms the laminated body 20. A pair of recesses 24 are formed. Since the bag making machine 10 of the present embodiment has two chamfers, two recesses 24 are formed in the width direction. When the recess forming means 49 is not provided, the recess forming step S1 can be omitted.

(2) Laminated compound leaf forming step S2
In the laminated body biplane step S2, the laminated body 20 is cut at the center in the width direction by the cutter 42a of the laminated body biplane forming means 42 in the bag making machine 10 shown in FIG. .. After that, the body films 2 and 2 are conveyed so as to be separated from each other in the vertical direction with the inner sealant layers 18A side facing each other.

(3) Flow path forming member supply step S3
Next, as shown in FIG. 6, the flow path forming member 4 is supplied to a predetermined position on the inner sealant layer 18A of the one body film 2 conveyed downward (FIG. 7A). Specifically, the flow path forming member supplied from the flow path forming member standby portion 54 in the flow path forming member supply means 44 to the flow path forming member conveying means 52 one by one via the flow path forming member supply valve 58. 4 is sucked and held by the installation portion 53, and moved onto the body film 2 to be arranged. Here, as shown in FIG. 7A, it is preferable to form the recess 24 in the region of the body film 2 where the flow path forming member 4 is arranged.

(4) Point sealing process S4
Next, a part of the flow path forming member 4 is heat-welded to the body film 2 by the point seal portion 55 and temporarily fixed (FIG. 7 (b)).

(5) Flow path forming member sealing step S5
Next, as shown in FIG. 6, the other body film 2 is superposed on one body film 2 on which the flow path forming member 4 is arranged, and each body film 2 is superposed by the bottom base material inserting means 22. , 2 The bottom film 3 is inserted between the both side ends in the width direction and conveyed, and the desired regions of the body films 2 and 2 and the bottom film 3 are sequentially sealed.

First, the flow path forming member sealing means 56 forms the second sealing portions 25, 25 by sealing the portion of the pair of body film 2 and 2 overlapped with the flow path forming member 4 interposed therebetween. The flow path forming member 4 is fixed to the body films 2 and 2.

Here, this step will be described in detail.
In this step, since the bag making machine 10 has two chamfers, a mold 30 capable of simultaneously forming the second seal portions 25 and 25 on each of the two flow path forming members 4 is used (FIG. 8). The mold 30 is composed of a fixed mold 30A and a movable mold 30B having the same shape and being arranged so as to face each other.

As shown in FIG. 8, the fixed mold 30A and the movable mold 30B are common to a pair of second recesses 34 formed relative to each other in the length direction (Y direction) and the pair of second recesses 34. It has a first recess 33 and two pressing portions 31 provided between the second recesses 34, 34 and the first recess 33, respectively.

The two pressing portions 31, 31 corresponding to one flow path forming member 4 are provided at a slight interval, and the pressing surfaces 31a, 31a are substantially half so as to follow the outer peripheral surface of the flow path forming member 4. It is curved in a circle. For example, as shown in FIG. 9, the radius of curvature r2 of the pressing surfaces 31a and 31a of the pressing portion 31 is set to be smaller than the radius of curvature r1 of the flow path forming member 4, so that the molds 30A and 30B are respectively set. The pressing surfaces 31a and 31a of the pressing portion 31 come into contact with the outer peripheral surface of the flow path forming member 4 via the body film 2 and 2 without a gap.

The fixed mold 30A and the movable mold 30B are installed on the production line of the bag making machine 10 in a state where the length direction coincides with the width direction of the body film 2.

In this step, as shown in FIGS. 10A and 10B, the body films 2 and 2 superposed by the fixed mold 30A and the movable mold 30B via the flow path forming member 4 are vertically oriented. It is sandwiched and pressed to form two second seal portions 25, 25 for the body film 2, 2 around the flow path forming member 4. As described above, the fixed mold 30A and the movable mold 30B have pressing surfaces 31a and 31a having a radius of curvature r2 smaller than the radius of curvature r1 of the outer peripheral surface of the flow path forming member 4, respectively. As shown in FIG. 10B, the pressing portions 31 and 31 press the flow path forming member 4 so as to push it inward in the radial direction over the entire circumferential direction of the predetermined seal portion. It will be. As a result, the portions of the flow path forming member 4 on which the second seal portions 25, 25 are formed are formed so as to be slightly recessed inward in the radial direction from the outer peripheral surface. As shown in FIG. 11, in the portion where the second seal portions 25, 25 of the flow path forming member 4 are formed, the body film 2 and 2 are in close contact with the entire outer peripheral surface of the flow path forming member 4 without any gap. ..

Further, when a predetermined portion of the flow path forming member 4 is pressed inward in the radial direction by the pressing portions 31 and 31, the region between the pressed portions of the flow path forming member 4 may be bent outward in the radial direction and deformed. .. In this way, the region between the second seal portions 25, 25 may be slightly deformed in a convex shape.

Here, the shape of the connecting portion 30b in which the facing surface 30a and the pressing surface 31a of the fixed mold 30A and the movable mold 30B are connected is changed so that the molds 30A and 30B form the body film 2 when the second seal portion 25 is formed. , 2 is preferably shaped so as not to damage the body film 2 when in contact with the body film 2. For example, the connecting portion 30b may be provided with a curved surface or an inclination. As a result, it is possible to prevent a problem that the body film 2 and 2 are torn by the connecting portion 30b and a hole is formed during pressing.

(6) Vertical and horizontal sealing process S6
Subsequently, the vertical sealing means 45 vertically seals the laminated portions of the body films 2 and 2 and the bottom film 3 along the conveying direction. Specifically, the area to be vertically sealed along the transport direction is heated by a heater (not shown) and then cooled by a cooling portion (not shown), so that the bottom seal portion 5a of the packaging bag 5 of the body films 2 and 2 is cooled. Heat seal the area to be.

Further, the horizontal sealing means 46 performs horizontal sealing along the width direction of the body films 2 and 2. Specifically, both sides of the body films 2 and 2 are heated by a heater (not shown) and then cooled by a cooling unit (not shown) to perform horizontal sealing along the width direction of the body films 2 and 2. The regions to be the side end seal portions 5b and 5b of the above are heat-sealed. In this way, the first unsealed portion 15A, which is the accommodating portion 1a shown in FIG. 1, is obtained.

At the time of each sealing operation, the buffer means 41 and 41 are used for the body films 2 and 2 and the bottom film 3 which are continuously fed from the laminated body biplane forming means 42 and the bottom base material inserting means 22 and are superposed on each other. A variable amount of buffer is formed, and the buffer is intermittently conveyed at predetermined intervals by the intermittent driving means 43 and 48.

(7) Separation step S7
Next, as shown in FIG. 6, the central portion of the heat-sealed body films 2 and 2 in the width direction is cut in half by the cutter 47a, and the separation line along the width direction of the body films 2 and 2 (not shown). It is separated into two packaging bags 5 and 5 by cutting according to.
In this way, a plurality of packaging bags 5 with spouts are manufactured.

As described above, in the present embodiment, the body film 2 and 2 are brought into close contact with each other around the flow path forming member 4 to form the second seal portion 25. Further, by providing the second seal portions 25 and 25 in duplicate, it is possible to prevent the contents from flowing out from the gap between the flow path forming member 4 and the body film 2 and 2, and the flow path is formed. It is configured to be poured out from the spout 14 through the flow path formed in the member 4. In this way, the width of the side seal portions 15a and 15b formed around the flow path forming member 4 can be narrowed by the second seal portion 25 utilizing the shape of the flow path forming member 4 having a cylindrical shape. it can.

Further, in the present embodiment, the tip 4a of the flow path forming member 4 is exposed from the body films 2 and 2 after opening. Therefore, for example, as shown in FIG. 13, even when the injection port 64 on the bottle 60 side is small, the side seal portions 15a and 15b do not get in the way, and the injection port 14 (flow path) of the packaging bag 5 is not obstructed. It is easy to use because the tip 4a side of the forming member 4) can be easily inserted. Further, the flow path of the spout 14 is formed by the flow path forming member 4 exposed for the first time after opening, rather than the structure in which the flow path of the spout 14 is formed by the body films 2 and 2 exposed before opening. The spout 14 is cleaner.

In this way, a part of the flow path forming member 4 is exposed from the body films 2 and 2, and the second sealing portions 25 and 25 that cut off the flow path on the outer periphery of the flow path forming member 4 are provided twice. The injection port 64 of the packaging bag 5 (the tip 4a side of the flow path forming member 4) can be inserted into the injection port 64 of the bottle 60, which is only slightly larger than the outer diameter of the flow path forming member 4.

Further, by forming the second seal portions 25 and 25 so as to intersect the point seals 19 provided along the length direction of the flow path forming member 4, the body films 2 and 2 of the flow path forming member 4 are formed. The seal strength against the seal is further increased, and film peeling due to deterioration of the seal portion can be suppressed for a long period of time.

Further, in the configuration in which a plurality of second seal portions 25, 25 are provided as in the present invention, even if the sealant film 18 is a biomass-derived sealant film, it can be suitably used. When the sealant film 18 (inner sealant layer 18A) constituting the body film 2 contains a polyolefin-based resin derived from biomass and is not provided with a plurality of second seal portions 25, the contents are contained when poured into the bottle 60. May leak.

That is, when a plurality of second sealing portions 25 and 25 are not provided as in the present embodiment and there is only one second sealing portion 25, the polyethylene derived from biomass has a stronger sealing strength than the polyolefin derived from petroleum. Since some of them have weak adhesiveness, the second seal portion 25 is peeled off due to the weak adhesiveness of the second seal portion 25, and the contents are not discharged only from the flow path forming member 4 at the time of pouring. It may be discharged from between the part film 2 and the flow path forming member 4 and leak without being poured into the bottle 60.

On the other hand, in the case of a packaging bag provided with the flow path forming member 4 as in the present embodiment, even if the packaging bag 5 is made using a sealant film containing a biomass-derived polyolefin resin, the second seal is provided. Since the portions 25 and 25 are doubled, the sealant film and the flow path forming member 4 are strongly adhered to each other, and the contents do not leak when poured into the bottle 60.

Although the preferred embodiments according to the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above examples.

For example, in the portion between the second seal portions 25, 25 provided at predetermined intervals from each other, a part of the flow path forming member 4 is bent by pressing by the dies 30A and 30B, and slightly protrudes outward in the radial direction. It may have a shaped shape.

Further, if the body film 2 and 2 are in close contact with each other in the second seal portions 25 and 25 in the circumferential direction of the flow path forming member 4, the flow path is formed in the portion between the second seal portions 25 and 25. There may be a slight gap between the member 4 and the body films 2 and 2.

1a ... Accommodating part, 2 ... Body film (film), 4 ... Flow path forming member, 4a ... Tip, 5 ... Packaging bag, 9 ... Opening auxiliary line, 14 ... Pouring outlet, 15A ... First unsealed part (not yet) Seal part), 19 ... Point seal, 25 ... Second seal part

Claims (5)

A packaging bag with a spout having a flow path forming member at the spout.
A pair of films that are layered on top of each other
A first seal portion provided around the pair of films and
An accommodating portion formed in the unsealed portion of the pair of films and accommodating the contents,
With the flow path forming member arranged between the pair of films,
An opening auxiliary line formed on the pair of films and extending so as to intersect in the length direction of the flow path forming member,
A second sealing portion for the pair of films provided in a ring shape along the circumferential direction in a part of the flow path forming member in the length direction is provided.
A plurality of the second seal portions are provided in the length direction of the flow path forming member .
A point seal for adhering one of the pair of films to the flow path forming member is provided.
The second seal portion is formed so as to intersect the point seal provided along the length direction of the flow path forming member.
Packaging bag with spout. The structure is such that the tips of the flow path forming members are exposed from the pair of films after opening.
The packaging bag with a spout according to claim 1. The opening auxiliary line is formed so as to cross over the flow path forming member excluding the second seal portion.
The packaging bag with a spout according to claim 1 or 2. The spout is provided so as to face diagonally upward from the accommodating portion.
The packaging bag with a spout according to any one of claims 1 to 3. The film contains a sealant layer containing biomass-derived polyolefin.
The packaging bag with a spout according to any one of claims 1 to 4.

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