JP5899618B2 - Packaging bag with spout and method for manufacturing a packaging bag with spout - Google Patents

Description

  A spout auxiliary member provided on the inner surface of the laminated film is provided inside the spout formed by opening the spout portion at one end of a packaging bag made of a laminated film. And, more particularly, the pouring auxiliary member has a bowl-like shape having an open portion in the longitudinal direction. The present invention relates to a packaging bag with a spout made of an elastic member and capable of easily pouring the contents.

  Conventionally, in a packaging bag with a spout formed of a laminated film, in which a fluid content such as a liquid beverage is hermetically packaged, for example, the content having a narrow width is poured into one end of a packaging bag provided with an opening means. An outlet is provided, and the laminated film constituting the spout is provided with a groove-like recess for forming a flow path of contents, and a cylindrical small tube made of plastic or the like is provided in the recess by spot welding or the like There is one that can secure the flow path and prevent crushing (for example, Patent Document 1).

JP-A-5-132069

However, in such a packaging bag with a spout, since the grooved depression as described above is provided in the laminated film, the number of manufacturing processes is increased and the manufacturing apparatus becomes complicated when the packaging bag is manufactured. There was a problem that the speed was suppressed and productivity was poor. In addition, since the small tube has a cylindrical shape made of a hard material, when the sealing position of the molding die (seal mold) in the manufacturing process of the packaging bag is shifted, the lamination constituting the front and back surfaces of the packaging bag to which the small tube is fixed There were manufacturing inconveniences such as the film was damaged by tension or loosened to cause wrinkles.
Accordingly, an object of the present invention is to provide a dispensing bag with a spout by providing a spout assisting member that improves the opening and shape retention of the spout and facilitates the pouring of the contents. It is an object of the present invention to provide a packaging bag with a spout and a manufacturing method of a packaging bag with a spout with improved productivity.

For this reason, the invention according to claim 1 is provided with a spout portion provided with an opening means at one end of a packaging bag made of a laminated film, and inside the spout formed by opening the spout portion, In the packaging bag with a spout provided with a spout auxiliary member attached to the inner surface of the laminated film, and the contents of the packaging bag are poured out from the spout through the spout auxiliary member, the spout auxiliary member consists gutter-shaped elastic member having an open portion in the long side direction, wherein the direction of the force spacing widens the opening portion is attached to the laminated film in a working state.

  The invention according to claim 2 is the packaging bag with a spout according to claim 1, wherein the pouring auxiliary member is formed with a thin portion in the longitudinal direction of the portion facing the open portion. And

  According to a third aspect of the present invention, in the packaging bag with a spout according to the first aspect, the pouring auxiliary member has a two-layer structure including at least an inner layer portion and an outer layer portion, and the inner layer The material constituting the part has a higher melting point than the material constituting the outer layer part.

  According to a fourth aspect of the present invention, in the packaging bag with a spout according to the first aspect, a protrusion projecting outward is provided on the outer peripheral edge of the spout auxiliary member. Features.

According to a fifth aspect of the present invention, in the packaging bag with a spout according to the first and fourth aspects, the protrusion extends along a tangent to the outer peripheral edge of the spout assisting member from a portion facing the open portion. It is a plate-shaped member provided uniformly toward both sides.
The invention described in claim 6 is provided with a spout portion provided with an opening means at one end of a packaging bag made of a laminated film, and the laminated film is formed inside the spout formed by opening the spout portion. A method of manufacturing a packaging bag with a spout, comprising a pour-out auxiliary member attached to the inner surface of the pouch, and pours out the contents of the packaging bag from the pour-out through the pour-out auxiliary member. A step of preparing a laminated film and a pouring auxiliary member made of a hook-shaped elastic member having an open portion in the longitudinal direction, which is previously formed into a three-dimensional shape, and a depression corresponding to the pouring auxiliary member in the laminated film The step of welding the laminated film on either the front side or the back side of the portion facing the open portion of the extraction auxiliary member without forming the gap, the interval between the open portions is narrower than the state before the attachment So that the front side and the back side A step of welding the serial laminated film, characterized in that it comprises a.

According to the first aspect of the present invention, a spout portion having an opening means is provided at one end of a packaging bag made of a laminated film, and the spout portion formed by opening the spout portion is laminated on the inside. comprising a pouring auxiliary member attached to the inner surface of the film, note the note packaging bag with an outlet for pouring the contents of the packaging bag via the spout auxiliary member from the outlet, dispensing assisting member, the long side direction It consists of a bowl-shaped elastic member with an open part, and is attached to the laminated film in a state where the force of the direction in which the distance between the open parts spreads, so that it is attached to the inner surface of the laminated film constituting the front and back surfaces of the packaging bag When the extraction assisting member is attached, the extraction assisting member is elastically deformed so that the tensile force and external force applied to the laminated film can be reduced, so that damage to the laminated film and generation of wrinkles can be prevented.

  In addition, since the pouring auxiliary member is elastically deformed and attached to the packaging bag so that the outer diameter becomes smaller than the state before being attached, the outward force always acts, Openness and shape retention can be stably maintained over time, and the content dispensing property can be improved. Furthermore, it is only necessary to attach the pouring auxiliary member between the laminated films constituting the spout, and it is not necessary to form a depression or the like in the laminated film, thereby reducing the number of manufacturing steps and simplifying the manufacturing apparatus. The production speed can be increased and the productivity can be improved.

  According to the invention described in claim 2, since the extraction assisting member is formed with a thin portion in the longitudinal direction of the portion facing the open portion, the elastic deformation of the extraction assisting member can be easily performed. .

  According to the invention described in claim 3, the dispensing auxiliary member has a two-layer structure including at least the inner layer portion and the outer layer portion, and the material constituting the inner layer portion is the material constituting the outer layer portion. Since the melting point is higher, the inner layer part is less likely to melt when the extraction assisting member is heat sealed to the packaging bag, so that the outlet is less likely to be blocked, and the opening and shape retention of the outlet are improved. Can do.

  According to the fourth aspect of the present invention, the outer peripheral edge of the extraction assisting member is provided with a protruding portion that protrudes outward. When cutting out the extraction assisting member prepared in the form of a winding to the required length on the roller, the extraction assisting member maintains a stable posture on the roller by bringing the protrusion into contact with the roller surface. The dispensing auxiliary member can be transported with the opening portions aligned in a certain direction. For this reason, the production speed of the packaging bag with the spout can be further increased as a result of being able to quickly cut the spout auxiliary member at a predetermined length without reducing the transport speed of the pour auxiliary member on the roller. The production efficiency of the packaging bag with a spout can be improved.

According to the fifth aspect of the present invention, the protrusion is a plate-like member that is provided uniformly from the portion facing the open portion toward both sides along the tangent line of the outer peripheral edge of the extraction assisting member. By increasing the contact area of the part with the roller surface, the extraction assisting member can be more stably supported on the roller. In addition, when the dispensing auxiliary member is temporarily attached to the inner surface of the laminated film constituting the packaging bag, the plate-like member is flat, so that the dispensing auxiliary member can be easily attached to the laminated film.
According to the invention described in claim 6, a spout portion provided with an opening means is provided at one end portion of a packaging bag made of a laminated film, and the inside of the spout formed by opening the spout portion is laminated. A method for producing a packaging bag with a spout, comprising a pour-out auxiliary member attached to the inner surface of the film, and pours out the contents of the packaging bag from the pour-out through the pour-out auxiliary member. A step of preparing a film and a pouring auxiliary member made of a bowl-shaped elastic member having an open portion in the longitudinal direction, which is previously formed into a three-dimensional shape, forming a depression corresponding to the pouring auxiliary member in the laminated film The process of welding the laminated film on either the front side or the back side, the part facing the opening part of the pouring auxiliary member, the front side and the back side so that the gap between the opening parts is narrower than the state before mounting. A process for welding laminated films Runode, with step excellent unnecessary for productivity to form the recess in the laminated film, it is possible to prevent occurrence of damage or wrinkling of the laminate film.

It is the whole side view which showed the packaging bag with a spout which shows an example of this invention. It is an enlarged side view near a spout. It is explanatory drawing which shows the extraction of the contents from the opened spout. It is an enlarged plan view of a spout. It is the front view (a) and perspective view (b) of the extraction assistance member. It is a plane sectional view when an extraction auxiliary member consists of two layers. It is a plane schematic diagram of the shaping | molding process which attaches a extraction assistance member to the inner surface of one side of a packaging bag. It is the top view schematic diagram (a) of the shaping | molding process which attaches a extraction assistance member to the inner surface of a packaging bag other side, and the completion figure (b) which finished shaping | molding. The top view (a) of the pouring auxiliary member showing the bending of the pouring auxiliary member accompanying the tension of the laminated film by the sealing position of the seal type, and the plane of the pouring auxiliary member returned to its original shape by elasticity FIG. It is the top view which illustrated the extraction auxiliary member of other shape. It is an enlarged side view near the spout showing another example of attachment of the auxiliary member. A cross-sectional side view (a) of a pouring auxiliary member having a narrow protrusion made of a plate member, a cross-sectional side view (b) of a pouring auxiliary member having a wide protrusion, and a protrusion provided in one direction. It is a section side view (c) of a pouring auxiliary member provided. Cross-sectional side view (a) of a pouring auxiliary member having a narrow protrusion that does not reach the pouring outlet seal portion heat-sealed to the laminated film and a pouring auxiliary member having a wide protrusion reaching the pouring outlet seal portion It is a cross-sectional side view (b). Cross-sectional side view (a) of the extraction assisting member provided with two protrusions made of a cylindrical member between the rollers at a position opposed to the opening part, and a protrusion made of a thin plate member provided at the position facing the opening part. Cross-sectional side view (b) of the extraction auxiliary member, cross-sectional side view (c) of the extraction auxiliary member provided with three protrusions made of a cylindrical member, and two protrusions made of a cylindrical member provided near the open portion It is a section side view (d) of an extraction auxiliary member.

The best mode for carrying out the present invention will be described below with reference to the drawings. FIG.
Is an overall side view showing a packaging bag with a spout showing an example of the present invention, FIG. 2 is an enlarged side view of the vicinity of the spout, FIG. 3 is an explanatory view showing the dispensing of contents from the opened spout, FIG. FIG. 3 is an enlarged plan view of a spout.

  The packaging bag 1 with a spout of the present invention is a liquid such as cosmetics such as lotion, milky lotion, or foodstuffs such as juice, soy sauce, vinegar, oil (or may be pharmaceuticals or industrial products). 1 is a well-known standing pouch (not limited) shown in FIG. 1, which contains a fluid content such as a main body (packaging bag) 2 and a spout 3.

  And this packaging bag 1 with a spout is the bottom part of the main body 2 between the lower parts of the front and back side films (laminate films) 4, 4 ′, and the bottom film is folded back to the bottom film folding part 5. A semicircular bottom film cutout 7a, 7b is provided in the vicinity of the lower ends of both sides of the bottom film which is formed in the form having an inserted gusset part 6 and folded inside, and the gusset part 6 is formed from both sides. It is formed by heat-sealing with a bottom-shaped bottom seal portion 7 that is concave in a curved line toward the center, and the body portion of the main body 2 is the edge on both sides of the front and rear wall films (laminated films) 4, 4 ′ The portion is formed by heat sealing with the side seal portions 8a and 8b.

  Further, at one corner (upper left corner in the example) of the upper part of the main body 2, a narrow spout having a tapered shape formed by heat-sealing the outer periphery with a spout seal portion 9 and facing upward obliquely outward. The part 3 has notches 10a and 10b projecting on both sides thereof.

  Further, as shown in FIG. 2, the opening position at the tip end side of the spout 3 is a notch at the end of the half cut line 11 as the opening means and the upper side (which may be the lower side or the upper and lower sides). 12 can be provided. In addition, although the part which does not provide the spout part 3 in the upper part of the main body 2 is heat-sealed by the upper seal part 13, since this part is used for the filling port of the contents, it is not yet filled before the contents are filled. It is used as an opening of the seal, and heat sealing is performed after filling the contents.

  Therefore, when the contents are poured out from the packaging bag with a spout 1 of the present invention, the wall surface films (laminated films) 4 and 4 constituting the spout portion 3 along the half-cut line 11 starting from the notch 12. ′ Is broken, the laminated films 4 and 4 ′ above the half-cut line 11 in the spout portion 3 are cut off, the spout 3 a is opened, and the contents are poured from the spout 3 a as shown in FIG. 3. Let it come out.

  The packaging bag with a spout of the present invention may be a well-known flat pouch in addition to the above-described standing pouch, and the spout portion may be positioned at the right side of the upper end of the main body, the left side of the upper end, or the upper end. It may be provided at the center of the part, and the shape of the spout part is not limited.

  As the laminated films 4 and 4 ′ used in the packaging bag 1 with a spout of the present invention, a laminated film obtained by laminating a sealant layer on a base film layer mainly composed of plastic is used. The above-mentioned base film according to the required conditions such as contents, usage conditions such as presence / absence of heat treatment after filling the contents, water vapor and other gas barrier properties, light shielding properties, various mechanical strengths, etc. A laminated film having a structure in which a water vapor or other gas barrier layer, a light shielding layer, a strength improving layer, or the like is laminated between the layer and the sealant layer can be used. The above-mentioned base film layer, water vapor or other gas barrier layer, light shielding layer, strength improving layer, sealant layer, etc. may be formed as a single layer, but may be formed by laminating a plurality of layers. May be.

  The base film layer includes a biaxially stretched film of polyester such as polyethylene terephthalate and polyethylene naphthalate, a biaxially stretched film of polyamide such as nylon 6, nylon 66, MXD6 (polymetaxylylene adipamide), and A biaxially stretched polypropylene film or the like can be preferably used. And these may be used independently and can also be laminated | stacked and used combining several.

  Gas barrier layers include saponified ethylene / vinyl acetate copolymer (EVOH), polyvinylidene chloride (PVDC), polyacrylonitrile (PAN), aluminum foil, silica, alumina, aluminum, etc. A biaxially stretched nylon film (ON film), a biaxially stretched polyethylene terephthalate film (PET film), a biaxially stretched polypropylene film (OPP film) or the like provided with a vapor deposition layer or a PVDC coating layer can be used. And among these, since the film provided with the aluminum foil or the aluminum vapor deposition layer is opaque, it can also serve as a light shielding layer.

As the above-described strength improving layer, any of the above-mentioned base films may be additionally laminated as appropriate, and a biaxially stretched high-density polyethylene film or the like may be laminated also as a moisture-proof layer. A known dry lamination method or extrusion lamination method (sandwich lamination method) can be used for laminating the base film layer, the gas barrier layer, the light shielding layer, and the strength improving layer.

  Further, the sealant layer includes low density polyethylene (LDPE), linear low density polyethylene (L / LDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE), ethylene-α olefin copolymer, ethylene -Vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, ethylene-acrylic acid ester copolymer, ethylene-methacrylic acid ester copolymer, ionomer, polypropylene or its copolymer Coalescence etc. can be used.

The sealant layer can be laminated by forming the above resin into a film and laminating by a dry lamination method or extrusion lamination method, or by extruding and laminating the above resin. However, in the case where the content easily penetrates into the sealant layer, it is preferable to laminate by the dry lamination method.

Next, the specific configuration of the dispensing auxiliary member at the spout, which is a feature of the present invention, will be described. FIG. 5 is a front view (a) and a perspective view (b) of the extraction assisting member, and FIG. 6 is a plan sectional view when the extraction assisting member has two layers. As shown in FIG. 2 and FIG. 4, on the inner surface of the laminated film 4, 4 ′ inside the spout 3 a and slightly below the half-cut line 11 toward the inner side of the main body 2, The member 14 is attached by thermoforming or the like. As described above, the extraction assisting member 14 is attached to the inner side of the outlet 3a so that the position of the upper end portion of the extraction assisting member 14 does not overlap the position of the half-cut line 11.

  As shown in FIGS. 5 to 6, the dispensing auxiliary member 14 is made of an elastic member having an open portion 14 a (gap) in the longitudinal direction and having a generally bowl shape (substantially C-shaped in cross section). In addition, the extraction assisting member 14 is attached to the laminated film 4 from a portion facing the opening portion 14a. At that time, a pulling force acts on the laminated film 4 toward the opening portion 14a of the dispensing auxiliary member 14. . Since the extraction auxiliary member 14 has an open portion 14a and is an elastic body, the extraction auxiliary member 14 is elastically deformed to be smaller than the outer diameter in the state before being attached, and the tensile force applied to the laminated film 4 can be reduced. Since external force can be reduced, damage to the laminated film 4 and generation of wrinkles can be prevented. The same applies to the laminated film 4 ′. If the dispensing auxiliary member 14 has a shape that does not have an open portion 14a such as a cylindrical body, the outer diameter cannot be reduced even if elastically deformed (the circumference of the outer periphery cannot be shortened). The tensile force and external force applied to the films 4 and 4 'cannot be reduced. Moreover, since the pouring auxiliary member 14 is attached so that the outer diameter is smaller than the state before being attached, an outward force always acts, and the opening property and the shape retaining property of the pouring route of the contents at the pouring port are improved. It can be stably maintained over time, and the contents can be poured out. The central cavity including the open portion 14a of the extraction auxiliary member 14 serves as a fluid flow path (shaded portion in FIG. 4) for extracting the contents. The central cavity including the open portion 14a of the extraction auxiliary member 14 serves as a fluid flow path (shaded portion in FIG. 4) for extracting the contents. And in this manufacturing process, this extraction auxiliary member 14 pulls and conveys what was produced in a long winding shape along these rollers R as shown in FIG. It is cut into a required length on the roller R and attached to the packaging bag 1 with a spout.

  FIG. 10 is a plan view illustrating another shape of the extraction assisting member. As shown in FIG. 10, when the thin portion 14b is provided in the longitudinal direction of the portion facing the opening portion 14a of the extraction assisting members 14 ′, 14 ″, 14 ″ ″, the thin portion 14b is the center. The thick wall portions 14d on both sides are easily elastically deformed left and right, and the tensile force and external force applied to the laminated films 4 and 4 'can be further reduced. FIGS. 10A and 10B show a shape in which a part of a substantially circular shape is missing, and FIG. 10C shows a shape in which a part of a substantially elliptical shape is missing. 10 (a) to 10 (c) are attached to the laminated films 4 and 4 ', the chipped area becomes less than half of the entire area due to elastic deformation, and the opening of the content extraction path at the spout Performance, shape retention, and discharge of contents can be further improved. In addition, in the extraction | pouring auxiliary member 14 'of Fig.10 (a), since the chipped area becomes less than half of the whole area by elastic deformation in the state attached to the laminated films 4 and 4', the spout 3a (circulation) The opening area of the route) can be widened, and, for example, the content having a high viscosity is excellent in the pouring property. Moreover, when the extraction | pouring auxiliary | assistance member 14 '' '' is made into a substantially elliptical shape like FIG.10 (c), it will become easy to arrange when the packaging bag 1 with an outlet is aligned. The thin portion 14b may have a concave or substantially flat outer surface. When the outer surface of the thin portion 14 b is flattened, the extraction assisting members 14 to 14 ″ ″ can be reliably attached to the inner surface of the laminated film 4.

  In addition, as an example of the size of the pouring auxiliary members 14 to 14 ″, for example, the width (including the heat seal portion) of the laminated films 4 and 4 ′ constituting the pouring port 3a of the packaging bag 1 with the pouring port is about. In the case of 11 mm, the width a in the cross section of the extraction assisting members 14 to 14 ″ ″ is about 4 mm, the thickness b of the thick portion 14 d is about 0.6 to 0.7 mm, and the thickness c of the thin portion 14 b is 0.3 mm to 0.4 mm. This corresponds to the mouth of the refill container having an inner diameter of 11 mm, and the width of the spout portion 3a is the width of the spout auxiliary member a (4 mm) + the width of the spout seal portion 9 (3 mm) + the spout. It is determined by the width of the seal portion 9 (3 mm) + the width of the notch (1 mm). Therefore, when the width of the spout seal 9 is 3 mm and the width of the notch is 1 mm, the width a of the dispensing auxiliary member 14 is about 8 mm and the mouth of the refill container when the inner diameter of the mouth of the refill container is 15 mm. When the inner diameter is 23 mm, the width a of the extraction assisting member 14 can be about 16 mm. The extraction assisting member 14 of the present application is optimal for the packaging bag 1 with an outlet having a small diameter such that the width of the outlet 3a is 11 to 23 mm. In the small-diameter packaging bag 1 with a spout, when the spout auxiliary member 14 does not have an open portion 14a such as a cylindrical body, the radius of curvature is small, and a tensile force or an external force is applied to the laminated films 4 and 4 '. The laminated films 4 and 4 ′ are easily damaged, and the pour-out assisting member 14 is convex when the pour-out seal portion is heat-sealed in a shape in which a ridge is provided on at least one end of the film. Since the strip melts, the opening and shape retention of the spout 3a cannot be obtained.

  Although this extraction | pouring auxiliary member 14-14 '' '' has elasticity, the elasticity here refers to the elasticity lower than the rigidity of lamination films 4 and 4 '. If the elasticity of the dispensing auxiliary member 14 is higher than the rigidity of the laminated films 4 and 4 ′, the laminated films 4 and 4 ′ are damaged and may be torn in some cases. The elasticity of the dispensing auxiliary member 14 is determined by the material and thickness, and can be appropriately designed to be lower than the rigidity of the laminated films 4 and 4 ′. Moreover, although the attachment method of the extraction | pouring auxiliary member 14 is not specifically limited, Since adhesiveness is stable under productivity and high temperature and high humidity, it is preferable to attach by heat seal. In that case, the pouring auxiliary member 14 is made of a material that can be heat-sealed with the sealant layer of the laminated films 4 and 4 ′, and can be made of, for example, medium density polyethylene, low density polyethylene, polypropylene, or the like. From the viewpoint of moldability, it is preferable that the material of the extraction assisting member 14 is the same material as the sealant layer of the laminated films 4 and 4 ′.

Further, in the extraction assisting member 14 having the shape of FIG. 10B, the width a in the cross section is about 4 mm, the thickness b of the thick portion 14d is about 0.6 mm to 0.7 mm, and the thickness c of the thin portion 14b. Is about 0.3 mm to 0.4 mm, the interval between the open portions 14a is about 1.0 mm, the width of the open portions 14a is about 1.0 mm, the material is low density polyethylene with a density of 0.915, and the thin portion 14b is on the top surface. When the compressive force was measured by covering the 10 cm × 10 cm plate and the dispensing auxiliary member 14 started to deform, the compressive force was 15 kgf (0.15 kgf / cm ² ).

  Further, the extraction assisting member 14 (may be 14 ′ to 14 ″ ′) may have a two-layer structure including at least an inner layer portion 14i and an outer layer portion 14o as shown in FIG. In this case, the material constituting the outer layer portion 14o is, for example, low density polyethylene having a density of about 0.915 and a melting point of about 100 degrees, and the material constituting the inner layer portion 14i is, for example, a density of about 0.930 and a melting point of 130 degrees. The front and back high density polyethylene.

  By adopting such a configuration, the material of the inner layer portion 14i has a higher melting point than the material of the outer layer portion 14o, so when the heat extraction seal member 14 is heat sealed to the inner surface of the laminated films 4, 4 ′, Since the inner layer portion 14i is difficult to melt, the spout 3a is less likely to be blocked, and the openability and shape retention of the spout 3a can be improved. Further, in the extraction assisting members 14 ′ to 14 ″ ″ as shown in FIGS. 10A to 10C described above, the outer peripheral portion where the thin portion 14b is located has a flat shape (contact with a roller R described later). Since it has a horizontal surface that is horizontal to the surface), when temporarily attaching the extraction assisting members 14 ′ to 14 ″ ″ to the inner surface of the laminated film 4, use flat upper and lower seal bars (not shown), The lower seal bar is positioned on the lower surface of the laminated film 4, and the upper seal bar is pressed from the opening portion 14 a against the portion facing the opening portion 14 a of the extraction assisting members 14 ′ to 14 ″ ″. The outer peripheral part of the part facing 14a can be stably attached to the inner surface of the laminated film 4. Note that the length to be temporarily attached is not more than 2/3 of the total length of the extraction assisting members 14 ′ to 14 ″ ″.

Here, the pouring auxiliary member 14 is heat-sealed and attached to the inner surface of the laminated films 4 and 4 '.
The method to be described is explained. FIG. 7 is a schematic plan view of the molding process for attaching the extraction assisting member to the inner side of the packaging bag. FIG. 8 is a schematic plan view of the molding process for attaching the extraction auxiliary member to the inner side of the other side of the packaging bag. FIG. 9 is a completed drawing (b), and FIG. 9 is a plan view of the pouring auxiliary member showing the deflection of the pouring auxiliary member due to the tension of the laminated film depending on the sealing position of the seal mold, and the pouring assist by elasticity FIG. 10 is a plan view of the dispensing auxiliary member in which the member has returned to its original shape, and FIG. It is a top view (b) of the extraction assistance member which the extraction assistance member returned to the original shape by a) and elasticity.

  First, as shown in FIG. 7, a convex mold is formed on the inner side surface of the laminated film 4 on the front side (or back side) constituting the spout 3a from the open portion 14a toward the inner side of the pouring auxiliary member 14. The opening portion 14a of the pouring auxiliary member 14 into which 15a has been inserted is opposed to the open portion 14a (thin wall portion 14b in the case of the pouring auxiliary member of FIG. 10) by the molding die 15a, and the opening portion 14a is opposed to the open portion 14a (see FIG. The outer surface of the laminated film 4 on which the thin portion 14b) is positioned is fitted into the concave portion of the concave molding die 15b by pressing the molding die 15a. And the peripheral surface of the pouring auxiliary member 14 are welded by hot press molding.

  At this time, as described above, if the dispensing auxiliary member 14 has the thin portion 14b whose outer surface is flat, the flat portion of the outer surface is flat on the inner surface of the laminated films 4 and 4 'by thermoforming. Therefore, the dispensing auxiliary member 14 can be reliably welded and fixed to the inner surface of the laminated films 4 and 4 ′. Since the molding dies 15a and 15b are well-known techniques, their detailed description is omitted.

  Next, as shown in FIG. 8A, the opening portion 14a side of the pouring auxiliary member 14 is brought into contact with the inner side surface of the laminated film 4 'on the back side (or the front side) constituting the spout 3a, and these openings are opened. The outer surface of the laminated film 4 ′ on which the portion 14 a side is located is fitted into the recess of the concave molding die 15 c, and a predetermined length on the inner surface of the laminated film 4 ′ and the opening portion 14 a side of the dispensing auxiliary member 14 The peripheral surface is welded by hot press molding. And as shown in FIG.8 (b), since the outer diameter of the extraction assistance member 14 becomes smaller than the state before being attached, the space | interval of the open part 14a is also narrower than the state before being attached. The open portion 14a may be closed when attached, but if the open portion 14a is present even in the attached state, the opening area of the spout 3a can be increased and the amount of pouring can be increased. For example, it is effective when the contents are made of high viscosity.

  As described above, the casting auxiliary member 14 is molded and sealed on the inner side surfaces of the laminated films 4 and 4 ′ and then cooled, and as described above, the outlet 3 is heat-sealed with the outlet sealing portion 9 and the outlet is attached. A packaging bag 1 is formed.

  Here, for example, as shown in FIG. 9, when the heat sealing position by the molding dies 15b and 15c of the laminated films 4 and 4 ′ having the pouring auxiliary member 14 fixed to the inner surface is shifted, the sealing is performed. Following the pulling of the laminated films 4 and 4 ′ with the displacement, the pouring auxiliary member 14 elastically deforms the thick parts on both sides centering on the thin part 14 b to the left and right, so that the laminated films 4 and 4. 'Responds. Therefore, excessive tension is not applied to the laminated films 4 and 4 ′, and breakage of the laminated films 4 and 4 ′ can be prevented.

  In addition, since heat sealing can be performed with molding dies 15b 'and 15c' (not shown) having shapes different from the above, various shapes can be accommodated by the single dispensing auxiliary member 14.

  In addition, the shape of the extraction | pouring auxiliary member 14 is not limited to the shape mentioned above.

Furthermore, the mounting direction of the pouring auxiliary member 14 to the pouring port 3a is not limited to the above. FIG. 11 is an enlarged side view of the vicinity of the spout showing another example of attachment of the auxiliary member.

  In this case, as shown in FIG. 11, the pouring assisting member 14 opens the opening portion 14a in the direction of the heat-sealed welded portion of the laminated films 4 and 4 ′ constituting the pouring port 3a (in the example, the right direction). However, the pouring auxiliary member 14 may be welded to the inner side surfaces of the laminated films 4 and 4 ′ by hot press molding in the same manner as described above.

  By adopting such a configuration, the central hollow portion of the pouring auxiliary member 14 is outside the pouring auxiliary member 14 through the open portion 14a, up to the heat-sealed welded portion of the laminated films 4 and 4 ′. Therefore, the distribution area of the contents can be increased, and the pouring property can be further improved.

  As described above in detail, the packaging bag with spout 1 of this example has a spout portion 3 provided with an opening means (half-cut line 11 and notch 12) at one end of the packaging bag made of the laminated films 4 and 4 '. The inside of the spout 3a formed by opening the spout 3 is provided with a spout auxiliary member 14 attached to the inner surface of the laminated films 4 and 4 '. The contents of the packaging bag are poured out via 14, and the dispensing auxiliary member 14 is made of a bowl-shaped elastic member having an open portion 14 a in the longitudinal direction.

  Next, as described above, in the manufacturing process, the extraction assisting member 14 is formed in a long winding shape between rollers R as shown in FIG. And is cut to a required length on the roller R.

  In the following description, the manufacture of the packaging bag 1 with a spout is made quicker and easier.

  FIG. 12 is a cross-sectional side view (a) of a pouring auxiliary member having a narrow protrusion made of a plate-like member, a cross-sectional side view (b) of a pouring auxiliary member having a wide protrusion, and provided in one direction. FIG. 13 is a cross-sectional side view of a dispensing auxiliary member having a protrusion, and FIG. 13 is a cross-sectional side view of a dispensing auxiliary member having a narrow protrusion that does not reach the spout sealing portion, heat-sealed to the laminated film. It is a cross-sectional side view (b) of the extraction assistance member provided with the wide protrusion which reaches a) and a spout seal part.

  For example, the above-described extraction assisting member has the shape shown in FIG. 10B described above, and is provided with a protruding portion that protrudes outwardly on the outer peripheral edge thereof.

  In this case, for example, as shown in FIG. 12 (a), the tangent L shown in the figure from the portion (thin portion 14b) facing the opening 14a to the outer peripheral edge o of the extraction auxiliary member 16 as the extraction auxiliary member 16. A protrusion w1 made of a plate-like member having a protrusion width f and a thickness e is attached over the length direction (conveyance direction) of the dispensing auxiliary member 16 substantially uniformly toward the left and right sides. And this protrusion w1 can make each right-and-left protrusion width f about 1.0 mm, and thickness e about 0.2-0.3 mm. Further, in this case, the width a of the extraction assisting member 16 is about 4.0 mm, the thickness b of the thick portion 14d is about 0.6 mm to 0.7 mm, and the thickness c of the thin portion 14b is 0.3 mm to 0.4 mm. It can be. It should be noted that the width g of the pouring auxiliary member 16 main body is about 4.6 mm, and the length d obtained by adding the left and right protruding widths f and the portion facing the open portion 14a (the length of the thin portion 14b) is about 5.0 mm. can do. Thus, since the protrusion w1 is provided so as to protrude evenly with respect to the main body of the extraction auxiliary member 16, the extraction auxiliary member 16 can be stably conveyed on a roller R shown in FIG. it can.

  The protrusions w1 (including w2 to w7 described later) may be made of the same material as the above-described extraction assisting member 16 (including 16 ′ to 16 ″ described later), and these protrusions The manufacturing method thereof is not limited, for example, integrally molding with the dispensing auxiliary member, or separately molding them together in a later step.

  Moreover, as shown in FIG.12 (b), it can also be set as the extraction assistance member 16 'provided with w2 which has the thickness e which extended each protrusion width f on either side rather than the protrusion part w1 mentioned above.

  The left and right protrusion widths f of the protrusions w1 and w2 are wide in the case shown in FIG. 12 (b) until both ends reach the spout seal 9 (over the spout seal 9) In the case of the narrowness shown in FIG. 12 (a), the dispensing auxiliary member is placed in the same direction (posture) on the roller R as shown in FIG. It is sufficient that the width can be stably supported so that it can be maintained (if it is too short, the dispensing auxiliary member cannot be stably supported). Moreover, in the extraction | pouring auxiliary member 16 ', since each right-and-left protrusion width f of the protrusion w2 is longer than each right-and-left protrusion width f of the protrusion w1 of the extraction auxiliary member 16, it can enlarge a contact area with the roller R. Further, it is more stable than the extraction assisting member 16.

  Further, if the thickness e is too thin, it is not possible to stably support the dispensing auxiliary member, and if the thickness e is too thick, when heat-sealing to the inner surface of the laminated films 4 and 4 ′ constituting the spout 3 a, In addition to hindering heat sealability, there is a possibility that elastic deformation of the extraction assisting member may be hindered when the thickness is thicker than the thick portion 14d of the extraction assisting member. It is preferable that e is less than 30 μm to a thickness b of the thick portion 14d of the extraction assisting member.

  Further, as shown in FIG. 12 (c), from the portion (thin wall portion 14b) facing the opening 14a to the tangent L shown in the figure at the outer peripheral edge o of the dispensing auxiliary member 16 A protrusion w3 having left and right protrusion widths f and thickness e made of a plate-shaped member toward one of the left and right sides along the side may be attached over the length direction of the dispensing auxiliary member 16. . In this case as well, the protrusion width f of the protrusion w3 has a width from the position where the tip reaches the spout seal 9 to the time when the discharge auxiliary member 16 ″ can be stably supported on the roller R. It is supposed to be.

  And by making into the extraction auxiliary | assistance member 16,16 ', 16' 'provided with such protrusions w1, w2, w3, in the manufacturing process of the packaging bag 1 with an outlet, it is produced in a long winding shape. When cutting out the extraction assisting members 16, 16 ′, 16 ′ that have been made to the required length on the roller R, the protrusions w <b> 1, w <b> 2, w <b> 3 are brought into contact with the roller R surface, so that the roller R It does not shift in any outer peripheral direction (left and right side with respect to the conveying direction) above, and the dispensing auxiliary members 16, 16 ′, 16 ″ maintain a stable posture on the roller R, and the opening 16a is in a certain direction. The extraction assisting members 16, 16 ′, 16 ″ can be conveyed in a uniform manner.

  In particular, since the protrusions w1, w2, and w3 are plate-like members provided in a portion facing the open portion 14a, the contact area of the protrusions w1, w2, and w3 with the roller R surface is increased. The output auxiliary members 16, 16 ', 16' can be supported more stably on the roller R. Moreover, since the contact area with the roller R increases further when the part (thin wall part 14b) which opposes the open part 14a is also flat like this example, it can support stably.

  Therefore, the dispensing auxiliary members 16, 16 ′, 16 ″ are quickly cut to a predetermined length without reducing the conveying speed of the dispensing auxiliary members 16, 16 ′, 16 ″ on the roller R. As a result, the production speed of the extraction assisting members 16, 16 ′, 16 ″ and the packaging bag 1 with the spout increases, and the production efficiency of the packaging bag 1 with the spout can be improved.

  In addition, when heat-sealing the pouring auxiliary member provided with the protrusion using the above-described molding dies 15a, 15b, and 15c on the inner surface of the laminated films 4 and 4 ′ constituting the pouring port 3a, for example, In the case of the extraction assisting member 16 having the protrusion w1 having a protrusion width f that has a short protrusion width f and does not reach the spout seal portion 9, the protrusion w1 is discharged as shown in FIG. 13 (a). Heat sealing is performed between the outer peripheral surface of the extraction auxiliary member 16 and the inner surface of the laminated film 4 along the outer peripheral edge o of the auxiliary member 16 up to the middle portion of the outer peripheral edge o.

  Further, for example, in the case of the extraction assisting member 16 ′ having a protrusion w 2 having a long protrusion width f and a protrusion width f reaching the spout seal 9, as shown in FIG. 13B, the protrusion w 2. However, while being heat-sealed between the outer peripheral surface of the extraction auxiliary member 16 and the inner side surface of the laminated film 4 along the outer peripheral edge o of the extraction auxiliary member 16, the tip of the protrusion w2 is injected. Heat sealing is performed between the inner surfaces of the laminated films 4 and 4 ′ in the middle of the exit seal portion 9.

  Further, in the extraction assisting members 16 to 16 ″ as shown in FIGS. 12 to 13 described above, the portion facing the opening 14a and the bottom of the protrusions w1 to w3 are flat (the contact surface of the roller R). As described above, the upper and lower sealing bars (not shown) are used as the pouring auxiliary members 16 to 16 ″, and the lower sealing bar is positioned on the lower surface of the laminated film 4. The upper seal bar is pressed against the bottom of the protrusions w1 to w3 including the portion facing the opening 14a of the extraction assisting members 16 to 16 ″ from the opening 14a, and the portion facing the opening 14a When temporarily attaching the bottoms of the protrusions w1 to w3 including the inner side surface of the laminated film 4 to the inner side surface of the laminated film 4 by pressing both flat portions, the dispensing auxiliary members 16 to 16 ″ are more stable. To attach to Can do.

  Then, as described above, during the heat sealing of the pouring auxiliary members 16 to 16 ″ to the laminated films 4 and 4 ′ using the molding dies 15b and 15c, the pouring auxiliary members 16 to 16 ″ are elastic bodies. Therefore, both open portions 14a follow the pressing of the molding die 15c via the laminated film 4 'and elastically deform in the direction approaching each other (so that the outer diameter becomes small), thereby opening the open portion 14a. Is substantially closed and the discharge assisting members 16 to 16 ″ on the open portion 14 a side are sealed, and the protrusions w 1 to w 2 that are elastic bodies follow the molding die 15 b through the laminated film 4. Seal molded. For this reason, damage and generation | occurrence | production of a flaw can be prevented by reducing the tensile force and external force which are applied to laminated film 4, 4 '.

  Further, the protrusions of the application assisting member of the present application can have a shape and an attachment position as illustrated in FIG. FIG. 14 is a cross-sectional side view (a) of a dispensing auxiliary member provided with two protrusions made of a columnar member between the rollers at positions opposite to the opening part, and the protrusions made of a plate member facing the opening part. Cross-sectional side view (b) of the pouring auxiliary member provided at the position, cross-sectional side view (c) of the pouring auxiliary member provided with three protrusions made of the cylindrical member, and the protrusion made of the cylindrical member in the vicinity of the open portion It is a cross-sectional side view (d) of the extraction assistance member provided with two.

  In this case, for example, as illustrated in (a), columnar protrusions w4 are formed on the outer peripheral edge portions o at both ends located at the portion (thin wall portion 14b) facing the opening portion 14a of the dispensing auxiliary member 17a. It may be provided over the length direction of the extraction assisting member 17a, and the extraction assisting member 17a may be stably placed on the surface of the roller R via the protrusion w4.

  Further, as illustrated in (b), a plate-like protrusion w5 is poured vertically outwardly from the outer peripheral edge o of the portion (thin wall portion 14b) facing the open portion 14a of the dispensing auxiliary member 17b. It can also be provided over the length direction of the output assisting member 17b. In this case, for example, the regulating member 18 may be provided at a predetermined position inside the roller R, and even if the extraction assisting member 17b tries to shift, the protrusion w5 comes into contact with the regulating member and the shifting of the dispensing assisting member 17b. In order to prevent this, it is possible to keep the conveying posture of the dispensing auxiliary member 17b constant between the rollers R.

  Further, as illustrated in (c), columnar protrusions w6 are provided at predetermined positions on the outer peripheral edge o of the thick portion 14d of the extraction assisting member 17c at a plurality of positions, and the length direction of the extraction assisting member 17c. Or cylindrical protrusions w7 on both outer peripheral edges o in the vicinity of the opening 14a of the extraction assisting member 17d as shown in FIG. 4D in the length direction of the extraction assisting member 17d. In the same manner as described above, it is possible to stably place the extraction assisting members 17c and 17d via the projections w6 or the projections w7 and to keep the delivery posture of the extraction assisting members 17c and 17d constant. it can.

  In addition, these protrusions w4 to w7 are the same as the material and molding method of the protrusions w1 to w3 described above, and the size of the protrusions 17a to 17d does not hinder the heat sealability. The posture can be kept constant and can be appropriately adjusted to a size that can be stably supported, and the size and shape are not limited.

  Therefore, by using the extraction assisting members 17a to 17d provided with such protrusions w4 to w7, in the manufacturing process of the packaging bag 1 with an outlet, the extraction assisting prepared in a long winding shape is used. When cutting the members 17a to 17d to the required length on the roller R, the pouring auxiliary members 17a to 17d are in a stable posture on the roller R by bringing the protrusions w4 to w7 into contact with the roller R surface. , And the discharge assisting members 17a to 17d can be transported with the opening portion 14a aligned in a certain direction, so that it is possible to dispense without reducing the transport speed of the dispensing assisting members 17a to 17d on the roller R. As a result that the auxiliary members 17a to 17d can be quickly cut to a predetermined length, the production speed of the extraction auxiliary members 17a to 17d and the packaging bag 1 with a spout increases, and the production efficiency of the packaging bag 1 with a spout increases. Can do.

  In addition, the present invention may be a flat pouch in addition to the above-described standing pouch, in which the fluid content is hermetically packaged and the content is poured out from the spout, and the position and shape of the spout portion are also limited. Not applicable, it can be applied to any packaging bag having a spout portion.

DESCRIPTION OF SYMBOLS 1 Packing bag with spout 2 Main body 3 Spout part 3a Spout 4,4 'Laminated film 11 Half cut wire 14,16 Outlet auxiliary member 14a Open part 14b Thin part 14c Straight part 14d Thick part w1-w7 Projection

Claims (6)

At one end of the packaging bag made of a laminated film, a spout portion provided with an opening means is provided,
Inside the spout formed by opening the spout portion, a spout auxiliary member attached to the inner surface of the laminated film is provided,
In a packaging bag with a spout that pours out the contents of the packaging bag from the spout through the spout auxiliary member,
The pouring auxiliary member is made of a gutter-shaped elastic member having an open portion in the long side direction,
A packaging bag with a spout, which is attached to the laminated film in a state in which a force in a direction in which the interval between the open portions is widened .   2. The packaging bag with a spout according to claim 1, wherein the pouring auxiliary member is formed with a thin wall portion in a longitudinal direction of a portion facing the open portion.   The dispensing auxiliary member has a two-layer structure including at least an inner layer portion and an outer layer portion, and the material constituting the inner layer portion has a higher melting point than the material constituting the outer layer portion. The packaging bag with a spout according to claim 1.   The packaging bag with a spout according to claim 1, wherein a protrusion projecting outward is provided on an outer peripheral edge of the pouring auxiliary member.   The said protrusion is a plate-shaped member equally provided toward the both sides along the tangent of the said extraction auxiliary | assistant member outer peripheral part from the part which opposes the said open part, It is characterized by the above-mentioned. A packaging bag with a spout as described in 1. A pour-out part provided with an opening means is provided at one end of a packaging bag made of a laminated film, and a pour-out aid attached to the inner surface of the laminated film is formed inside the spout formed by opening the pour-out part. A manufacturing method of a packaging bag with a spout, which comprises a member, and pours out the contents of the packaging bag from the spout through the spout auxiliary member,
A step of preparing a laminated film on the front side and the back side, and a pouring auxiliary member made of a bowl-shaped elastic member having an open portion in the longitudinal direction, which is previously formed into a three-dimensional shape,
The step of welding the laminated film on either the front side or the back side, the portion facing the open portion of the dispensing auxiliary member without forming a depression corresponding to the dispensing auxiliary member in the laminated film,
The manufacturing method of the packaging bag with a spout characterized by including the process of welding the said laminated | multilayer film of a front side and a back side so that the space | interval of the said open part may become narrower than the state before attaching.

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