JP2013212851A - Packaging bag with spout - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag with a spout, having superior productivity, and also having an improved pouring property for content.SOLUTION: A packaging bag with a spout is provided in which a pouring auxiliary member is attached to an inner surface side of a laminated film, the pouring auxiliary member being positioned inside the spout formed as a spout part above the packaging bag is opened, and from which content is poured out from the spout via the pouring auxiliary member 20 after opening, the pouring auxiliary member 20 is comprised of a gutter-shaped elastic member having an open part 21 in a longitudinal direction, and a protrusion piece 23 directed laterally from both sides of a bottom part 22 as a part opposed to the open part 21 is provided in the longitudinal direction, and is attached to the laminated film 1 at least on a surface on a side opposed to the open part 21 of the protrusion piece 23. The pouring auxiliary member 20 has elasticity and thus an opening property and a shape holding property of a pouring path are maintained, the pouring property for content can be improved, and the bag can be conveyed in a stable attitude by bringing the protrusion piece of the pouring auxiliary member into contact with a roller during manufacturing, thus improving the productivity.

Description

  The present invention belongs to the technical field of packaging bags for storing and selling contents having fluidity such as liquid beverages, and more specifically, a spout provided with an opening means at one end of a packaging bag made of a laminated film is provided. Type of packaging bag with a spout.

  Conventionally, as this type of packaging bag with a spout, a bag having a narrow spout provided with an opening means at one end of the bag is often used. And recently, a groove-like depression for forming a flow path is provided in the laminated film constituting the spout, and a cylindrical small tube made of plastic or the like is provided in the depression by a spot welding or the like. There is also known one that is fixed and prevents the channel from being secured and crushed by this small tube.

JP-A-5-132069

  Since the above-mentioned packaging bag with a spout needs to be provided with a groove-like depression in the laminated film in advance before fixing the small tube, the number of manufacturing steps increases and the manufacturing apparatus becomes complicated. There was a problem that the productivity was reduced due to suppression. In addition, since the small tube is made of a hard material and has a cylindrical shape, the front and back surfaces of the packaging bag to which the small tube is fixed are configured when the sealing position of the mold (seal mold) in the manufacturing process of the packaging bag is shifted. There were inconveniences in production such as the laminated film was strained due to tension or loosened to cause wrinkles.

  The present invention has been made in view of the problems as described above, and the object of the present invention is to provide a packaging bag with a spout that has good productivity and improves the pourability of contents. It is to provide.

  In order to achieve the above object, the packaging bag with spout according to the present invention is provided with a spout portion having an opening means on the top of the packaging bag made of a laminated film, and the spout portion is formed by opening the spout portion. A pouring auxiliary member is attached to the inner surface side of the laminated film located inside the outlet, and is a packaging bag with a pouring port for pouring the contents from the pouring port through the pouring auxiliary member after opening, The extraction assisting member is made of a hook-shaped elastic member having an open portion in the longitudinal direction, and protruding pieces directed in the lateral direction from both sides of the bottom portion which is a portion facing the open portion are provided in the longitudinal direction. It is attached to the laminated film at least on the surface facing the open portion of the protruding piece.

  And in the packaging bag with a pouring outlet of the above-mentioned composition, it is preferred to make the bottom part of a pouring auxiliary member into a thin part.

  According to the present invention, since the dispensing auxiliary member has an open portion in the longitudinal direction, when the dispensing auxiliary member is attached to the inner surface of the laminated film constituting the front and back of the packaging bag, the dispensing auxiliary member is elastically deformed. Thus, the tensile force and external force applied to the laminated film can be reduced, and the laminated film can be prevented from being damaged or wrinkled. Moreover, since the extraction | pouring auxiliary member has elasticity, the opening property and shape retention property of the extraction | pouring path | route are maintained, and the extraction | pouring property of the contents can be improved.

  In addition, the pouring auxiliary member only needs to be attached between the laminated films constituting the pouring port, and it is not necessary to form a depression in the laminated film, so that the manufacturing apparatus can be simplified and the production speed can be increased, thereby increasing productivity. Can be improved. In the manufacturing process, the long extraction auxiliary member is unwound from the winding, and the extracted extraction auxiliary member is cut into a predetermined length on the roller and then attached to the outlet portion of the packaging bag. However, since the protruding auxiliary member is provided with a protruding piece extending in the longitudinal direction from both sides of the bottom portion, and the protruding piece is attached to the laminated film, the protruding piece of the discharging auxiliary member is By making it contact with a roller, it can convey on a roller, maintaining a fixed attitude | position, and productivity can be improved also from this viewpoint.

  And by making the bottom part of the extraction | pouring auxiliary member into a thin part, the extraction | pouring auxiliary member becomes easy to elastically deform, and generation | occurrence | production of the damage of a laminated film at the time of attachment and generation | occurrence | production of a wrinkle can be reduced.

It is a top view which shows an example of the packaging bag with a spout which concerns on this invention. It is explanatory drawing which shows the state which pours out the contents from the opened spout. It is A-A 'sectional view taken on the line of the spout in the packaging bag with a spout of FIG. It is a perspective view of an extraction auxiliary member. It is explanatory drawing which shows the state which conveys the extraction assistance member on a roller. It is explanatory drawing which shows the sticking area | region of the extraction assistance member with respect to a laminated | multilayer film. It is explanatory drawing which shows the process of the latter half which attaches the extraction assistance member. It is explanatory drawing which shows another example of the latter half which attaches the extraction assistance member. It is a top view for demonstrating a dimension with the same figure as FIG. It is a side view for demonstrating the dimension of the extraction assistance member. It is a top view which shows another example of the packaging bag with a spout which concerns on this invention.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

[Packaging bag body]
₁ is a so-called standing pouch made of a laminated film. For example, cosmetics such as skin lotion and emulsion, or foodstuffs such as juice, soy sauce, vinegar and oil (or pharmaceuticals and so on). It may be used to contain fluid contents such as liquids including industrial products).

This spout-equipped packaging bag A ₁ is manufactured by combining a bottom film 2 folded in two between two wall film 1 forming the trunk. That is, the bottom portion of the gusset type in which the bottom film 2 is folded in half is provided with a semicircular cutout 2a in the vicinity of the lower ends on both sides, and is folded between the two wall film 1 forming the body portion. The bottom film 2 is sandwiched and heat sealed with a bottom seal portion 3 having a boat bottom shape, and heat sealed with a trunk seal portion 4 along the left and right end edges to produce a bag.

A spout portion 10 is formed at the corner portion of one side and the upper side of the spout-equipped packaging bag A ₁ and faces the diagonally upward direction and is heat-sealed. That is, the notch portions 11 and 12 are provided on both sides of the upper side and the left side, and the spout seal portion 13 (portion indicated by oblique lines) is provided in the vicinity thereof, so that the spout portion 10 is formed in a protruding state. Further, near the tip of the spout 10, an opening means is provided with a half-cut line portion 14 and a notch 15 located at one end thereof, and the spout seal part is located on the tip side of the opening means. The knob 13 is formed by 13. In addition, although the part which does not provide the spout part 10 in the upper part of the bag is heat-sealed by the upper seal part 5, since this part is a filling port for the contents, it is an unsealed opening before filling the contents. Heat sealing after filling the contents.

  As for the half-cut line portion 14, as shown in the drawing, in addition to 3 to 7 parallel half-cut line groups, from one end side of the half-cut line group toward the other end side, It is preferable to provide an oblique half-cut line that obliquely intersects the parallel half-cut line group (see JP-A 2006-1601). By forming such a half-cut line part 14, the spout part 10 can be opened easily.

  As the laminated film used for the main body of the packaging bag with a spout of the present invention, a laminated film in which a sealant layer is laminated on a base film layer mainly composed of plastic is used. Depending on usage conditions such as the presence or absence of heat treatment after filling, or required performance such as water vapor and other gas barrier properties, light shielding properties, various mechanical strengths, the above-mentioned base film layer and sealant layer 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 layers can be used. The base film layer, water vapor and other gas barrier layers, the light shielding layer, the strength improving layer, the sealant layer, etc. may each be formed as a single layer, or may be formed by laminating a plurality of layers. .

  As the base film layer, in addition to polyester biaxially stretched films such as polyethylene terephthalate (PET) and polyethylene naphthalate, polyamide biaxially stretched films such as nylon 6, nylon 66 and MXD6 (polymetaxylylene adipamide) A biaxially stretched polypropylene film or the like can be preferably used. And these can also 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 (AL), silica, alumina, It is possible to use a biaxially stretched nylon film (ONy 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 such as aluminum or a PVDC coating layer. it can. 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 strength improving layer, any one of the base films may be additionally laminated as appropriate, and a biaxially stretched high-density polyethylene film or the like may also be laminated 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.

  As the sealant layer, 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 Etc. can be used.

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

In order to pour the contents from the filled packaging bag A ₁ with a spout, the wall film 1 constituting the spout 10 is broken along the half-cut line portion 14 starting from the notch 15, and the spout 10, the upper side of the half cut line portion 14 is cut off to open the spout 10a, and the contents are poured out from the spout 10a as shown in FIG.

[Pouring aid]
In order to pour out the contents from the packaging bag A ₁ with a spout of the present invention, the spout portion 10 is opened to form a spout 10 a, which is located inside the spout 10 a and is positioned on the laminated film 1. A pouring auxiliary member 20 is attached to the inner surface side by means such as heat fusion, and the contents are poured out from the pouring outlet 10a via the pouring auxiliary member 20.

  As shown in FIGS. 3 and 4, the dispensing auxiliary member 20 is made of a hook-like elastic member having an open portion 21 in the longitudinal direction, and is laterally viewed from both sides of the bottom portion 22 that is a portion facing the open portion 21. A projecting piece 23 that is horizontal and has at least a flat bottom surface is provided in the longitudinal direction, and the bottom portion 22 is formed thin as shown in the figure. And as shown in FIG. 3, it is attached to the laminated | multilayer film 1 with the surface of the side facing the open part 21 of the bottom part 22, and the surface of the side facing the open part 21 of each protrusion piece 23. As shown in FIG. In consideration of the attachment strength, it is only necessary that the projection film 23 is attached to the laminated film 1 on the surface facing the open portion 21.

  The size of each part of the pouring auxiliary member 20 having the shape shown in FIGS. 3 and 4 is such that the width of the spout 10a including the seal part of the packaging bag body is about 17 mm (a width suitable for a plastic bottle having a diameter of 17 mm). In some cases, the distance l from one projecting piece 23 to the other projecting piece 23 is 7.5 to 8.0 mm, the thickness o of the thickest part is 0.7 to 1.2 mm, and the bottom part 22 The thickness p of the thin portion is 0.3 to 0.5 mm, the protruding length q of the protruding piece is about 0.8 to 1.2 mm, the thickness r of the protruding piece 23 is 0.3 to 0.5 mm, and the open portion 21. Can be set to 2 to 6 mm (see FIG. 11 for each part of the extraction assisting member 20).

  Although the pouring auxiliary member used for the packaging bag with the pouring port of the present invention has elasticity, the elasticity is determined by the material and thickness, and is appropriately designed so as to be lower than the rigidity of the laminated film. This is because if the elasticity of the dispensing auxiliary member is higher than the rigidity of the laminated film, the laminated film is damaged and may be torn in some cases.

  As a material for the dispensing auxiliary member, resins such as low density polyethylene, medium density polyethylene, and polypropylene can be used. In particular, it is preferable to use low density polyethylene, linear low density polyethylene, or a blend resin of low density polyethylene and linear low density polyethylene.

[Attaching the pouring auxiliary member]
An example of a method for attaching the dispensing auxiliary member 20 shown in FIG. 4 between the front and back laminated films 1 as shown in FIG. 3 will be described below.

  The dispensing auxiliary member 20 is supplied in a state in which a long one is wound. Then, after being sequentially fed out from the winding, as shown in FIG. 5, it is conveyed in the length direction so as to pass between the rollers R, and is sequentially cut into the attachment size of FIG. 4 during the conveyance. At this time, since the pouring auxiliary member 20 is provided with protruding pieces 23 extending in the longitudinal direction from both sides of the bottom portion 22, the protruding piece 23 is kept in contact with the roller R to maintain a certain posture. The roller R can be conveyed as it is.

And the pouring auxiliary member 20 cut | disconnected by the attachment size is one side which comprises the surface of the side which opposes the open part 21 of the bottom part 22, and the surface which opposes the open part 21 of each protrusion piece 23, and comprises a packaging bag. 1 is attached to the predetermined position of the laminated film 1, and then the laminated film 1 with the pouring auxiliary member 20 and the other laminated film 1 are used, and further, the bottom film 2 is used and the spout shown in FIG. the packaging bag a ₁ is the bag-making. The dispensing auxiliary member 20 may be heat-sealed as a whole, but here, the diagonal line in the sticking region F (corresponding to the portion surrounded by the one-dot chain line in FIG. 1) in FIG. I go in the department. Of course, when it is desired to increase the mounting strength, the whole may be heat-sealed.

  After attaching the surface on the side facing the open portion 21 of the bottom portion 22 of the dispensing auxiliary member 20 and the surface on the side facing the open portion 21 of each protruding piece 23 to one of the front and back laminated films 1, FIG. As shown, the other side of the laminated film 1 on the front and back is overlaid from above the dispensing auxiliary member 20, and the front and back films 1 are sandwiched between the flat lower mold 30 and the upper mold 40 and heat sealed. The spout seal portion 13 indicated by the hatched portion 1 is formed. At this time, since the dispensing auxiliary member 20 has the open portion 21 in the longitudinal direction, the tensile force or external force applied to the laminated film 1 due to elastic deformation of the dispensing auxiliary member 20 can be reduced. Damage and flaws can be prevented. Moreover, the extraction | pouring auxiliary member 20 can be attached in the state elastically deformed so that the diameter may become small, and by this, the force which tries to spread always works after attachment, and the openability and shape retention of the extraction | pouring path | route Sex will be maintained. Thereby, as shown in FIG. 3, the extraction | pouring auxiliary member 20 can be attached between the laminated films 1 of the front and back which comprise a packaging bag.

  In order to reinforce the adhesive strength of the dispensing auxiliary member 20, between the step of attaching the dispensing auxiliary member 20 to a predetermined position of one laminated film 1 constituting the packaging bag and the step of FIG. As shown in FIG. 8, instead of the mounting process shown, a lower mold 50 and an upper mold 60 each having a concave portion with an arc-shaped cross section on the opposing surface are used, and a pouring aid is provided between the laminated films 1 on the front and back sides. What is necessary is just to heat-seal in the state which pressed the member 20. FIG. In this case, the temperatures of the lower mold 50 and the upper mold 60 are both set to about 170 to 220 ° C. Thereby, the both sides of the opening part 21 are adhere | attached on the other laminated | multilayer film 1 of the extraction assistance member 20. As shown in FIG.

  The method of attaching the dispensing auxiliary member to the laminated film is not particularly limited, but because the adhesiveness is stable even under high productivity and high temperature and high humidity, the method by heat sealing as described above is used. It is preferable to attach. In that case, a material that can be heat-sealed with the sealant layer of the laminated film is adopted as the dispensing auxiliary member.

<Example 1>
PET (12 μm) / ONy (15 μm) / L·LDPE (130 μm) was used as the laminated film constituting the packaging bag body. And the surface on the side facing the open part 21 of the bottom portion 22 of the pouring auxiliary member 20 and the surface on the side facing the open part 21 of each protruding piece 23 are attached to one of the front and back laminated films 1, and FIG. As shown, the other side of the laminated film 1 on the front and back is overlapped from above the dispensing auxiliary member 20, and the laminated film 1 on the front and back is sandwiched between the flat lower mold 30 and the upper mold 40 and heat sealed. Note after forming the outlet seal portion 13 to form a bottom seal portion 3 and the body seal section 4, to produce a spout-equipped packaging bag a ₁ shown in FIG. Note that FIG. 9 is used to describe the dimensions of each part in the packaging bag body, and FIG. 9 is the same as FIG. 1, and corresponding parts are denoted by the same reference numerals.

  The size of the packaging bag body is a vertically long shape with a length a of 195 mm and a width b of 110 mm, the height c of the gusset-type bottom film 2 is 30 mm, the minimum height d of the bottom seal portion 3 is 5 mm, and the body seal The width e of the portion 4 is 5 mm, and the spout portion 10 is located at the upper left corner portion separated by a distance f of 71.2 mm from the right side and a distance g of 148 mm from the bottom side.

  The spout portion 10 is provided with a half cut line portion 14 composed of five half cut lines and two half cut lines extending obliquely in three of the half cut lines. A spout seal portion 13 having a knob portion bulged further toward the distal end is formed.

  Of the spout seal portion 13, the seal portion inside the half cut line portion 14 forms a nozzle having a width h of 17.8 mm, and the seal width i on the notch portion 12 side on the left side. Is 3.0 mm, and the seal width j on the side of the notch 11 on the upper side where the notch 15 is formed is 3.8 mm.

  The dispensing auxiliary member 20 has a length k of 25.0 mm, a distance l from one protruding piece 23 to the other protruding piece 23 is 7.6 mm, and other sizes will be described with reference to FIG. The height m is 5.1 mm, the maximum lateral dimension n in the lateral direction of the bowl-like body is 5.7 mm, the thickness o of the thickest part is 1.2 mm, and the thickness p of the thin part of the bottom part 22 is 0. .48 mm, the protruding length q of the protruding piece 23 is 1.0 mm, the thickness r of the protruding piece 23 is 0.42 mm, and the interval s between the open portions 21 is 2.6 mm.

In this packaging bag A ₁ with a spout, the laminated film was not damaged or wrinkled. And the thing filled with lotion as a content is produced, The place of the half cut 14 is fractured | ruptured from the notch 15 in the spout part 10, the spout 10a is formed, and the content is put into the plastic bottle whose diameter is 18mm. When poured, the opening auxiliary member 20 maintained the opening property and shape retention of the discharging path, and the contents could be smoothly discharged.

<Example 2>
PET (12 μm) / AL (7 μm) / ONy (15 μm) / L·LDPE (130 μm) was used as the laminated film constituting the packaging bag body. And the surface on the side facing the open part 21 of the bottom portion 22 of the pouring auxiliary member 20 and the surface on the side facing the open part 21 of each protruding piece 23 are attached to one of the front and back laminated films 1, and FIG. As shown, the other side of the laminated film 1 on the front and back is overlapped from above the dispensing auxiliary member 20, and the laminated film 1 on the front and back is sandwiched between the flat lower mold 30 and the upper mold 40 and heat sealed. Note after forming the outlet seal portion 13 to form a bottom seal portion 3 and the body seal section 4, to produce a spout-equipped packaging bag a ₂ shown in FIG. 11. Note that FIG. 11 is substantially the same as FIG. 9, and corresponding portions are denoted by the same reference numerals.

  The size of the packaging bag body is a vertically long shape having a vertical length of 180 mm and a horizontal width of 110 mm, the height c of the bottom film 2 in the gusset form is 30 mm, the minimum height d of the bottom seal portion 3 is 5 mm, and the body seal The width e of the part 4 is 5 mm, and the spout part 10 is located at the upper left corner part separated by a distance f of 71.2 mm from the right side and a distance g of 133 mm from the bottom side.

  And, out of the spout seal part 13 in which the knob part is bulged on the tip side, the seal part inside the half cut line part 14 forms a nozzle having a width h of 16.8 mm. The seal width i on the left side cutout 12 side and the seal width j on the upper cutout 11 side are both 2.9 mm. Since a space for providing a notch is not sufficient for a width of 2.9 mm, the seal part on the side of the notch 11 on the upper side is shaped to slightly swell inward at the half-cut line part 14 where the notch 15 is provided. Further, the half-cut line portion 14 is not provided with an oblique half-cut line as in the first embodiment, and in consideration of the pouring property of the contents, both ends of the pouring path of the spout portion 10 as shown in the figure. The pattern is curved in the direction opposite to the pouring direction from the center to the center.

In this packaging bag A ₂ with a spout, similarly to the packaging bag A ₁ with a spout of Example 1, the laminated film was not damaged or wrinkled. And the thing filled with lotion as a content is produced, The place of the half cut 14 is fractured | ruptured from the notch 15 in the spout part 10, the spout 10a is formed, and the content is put into the plastic bottle whose diameter is 17mm. When poured, as with the packaging bag A ₁ with a spout of Example 1, the opening assisting member 20 and the shape retaining property are maintained by the spout auxiliary member 20, and the contents can be smoothly poured out. It was.

  As mentioned above, although the form for implementing this invention has been demonstrated in detail, the packaging bag with a spout by this invention is not limited to said form at all, and various in the range which does not deviate from the meaning of this invention. Of course, it is possible to make changes.

  For example, the packaging bag with a spout of the present invention may be a known flat pouch such as a three-side seal bag or a four-side seal bag in addition to the above-described standing pouch. The upper end right side, upper end left side, or upper end center may be used, and the shape of the spout portion is not limited.

A ₁ , A ₂ Outlet packaging bag 1 Wall film 2 Bottom film 2a Notch 3 Bottom seal 4 Body seal 5 Upper seal 10 Outlet 10a Outlet 11, 12 Notch 13 Outlet seal 14 Half Cut line part 15 Notch 20 Pouring auxiliary member 21 Open part 22 Bottom part 23 Projection piece 30 Lower mold 40 Upper mold 50 Lower mold 60 Upper mold

Claims (2)

  A spout part having an opening means is provided in the upper part of the packaging bag made of a laminated film, and a spout auxiliary member is attached to the inner surface side of the laminated film located inside the spout formed by opening the spout part. It is a packaging bag with a spout that pours out the contents from the spout via a spout assisting member after opening, and the spout assisting member has a bowl-like elastic member having an open portion in the longitudinal direction Projecting pieces extending in the longitudinal direction from both sides of the bottom portion, which is a portion facing the open portion, are attached to the laminated film at least on the surface facing the open portion of the projecting piece. A packaging bag with a spout, characterized by   The packaging bag with a spout according to claim 1, wherein the bottom portion of the pouring auxiliary member is a thin portion.

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