JP2017024786A - Gusset bag with spout - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gusset bag with a spout which can ensure stable self-standing property regardless of the residual amount of a content, can easily discharge the content completely regardless of the residual amount, and prevents a portion obstructing usage from jumping out to the outside when using the gusset bag with the spout.SOLUTION: A gusset bag with a spout comprises a bag body formed of a film material and a spout fitted to the bag body. The bag body has a cylindrical body. The cylindrical body comprises a pair of flat surface parts facing each other and a pair of side surface parts bonded between side edge parts of the pair of flat surface parts. Folding lines for forming side surface gussets, which enable the side surface parts to be folded into the bag body, are formed on the side surface parts. The dimension of the pair of side surface parts in a height direction is formed shorter than the pair of flat surface parts, and a bonded part bonded to upper end edges of the side surface parts is formed in one of the pair of flat surface parts. An inclined edge part is formed in one of both ends of an upper part of the bag body in a width direction. The spout is fitted to the inclined edge part.SELECTED DRAWING: Figure 1

Description

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

  2. Description of the Related Art Conventionally, there is known a gusset bag with a spout in which a spout (spout) is attached to an upper edge portion of a bag having a gusset on the side. As an example, Patent Document 1 (Japanese Patent Laid-Open No. 2013-233987) discloses a spouted gusset bag as described below.

  The spouted gusset bag described in Patent Document 1 is composed of a bag body made of a film material and a spout attached to the bag body. The bag body has a cylinder and a lower edge of the cylinder. The cylinder is composed of a rectangular bottom surface bonded by thermal fusion, and the cylindrical body includes a pair of opposed flat surfaces and a pair of side surfaces bonded by thermal fusion between side edges of the pair of planar surfaces. An inclined edge is formed on one of the two upper corners of the bag body, and the spout is attached to the inclined edge.

  According to such a spouted gusset bag, stable independence can be ensured regardless of the remaining amount of the content, and the content can be easily poured out to the end regardless of the remaining amount.

JP2013-233987A

  However, when forming an inclined edge on a bag having a gusset on the side, a portion having a thickness corresponding to four films by a pair of flat portions and a bent side portion and two films by only a pair of flat portions As in the case of the thickness of the thickness, a thickness difference occurs. If a spout is attached to the inclined edge having a thickness difference, the contact pressure of the hot plate is not uniform due to the thickness difference, and the liquid-tightness is impaired by the insufficient fusion state between the bag and the spout. As a result, the contents may be leaked. Therefore, in order to prevent this, the gusset bag with a spout described in Patent Document 1 forms an open portion by further folding the side edge portion in order to eliminate at least the thickness disparity of the portion to which the spout is attached. By forming the opening portion, the portion to which the spout at the inclined edge portion is attached becomes the thickness of two films by only a pair of flat portions, the thickness disparity is eliminated, and the spout can be easily attached. However, since such an opening portion is formed by folding the upper portion of the side surface portion in a state where the side surface portion is fused to the flat surface portion, there is a problem that the manufacturing process becomes complicated and it is difficult to suppress the manufacturing cost. In addition, since the opening portion is formed by folding the side surface portion, the inside becomes a pocket shape, the contents enter the pocket-shaped opening portion, and it becomes difficult to pour out the entire content. There was also a problem. Furthermore, when the contents were filled, the upper part of the bag body was bent due to the weight of the spout, and there was also a problem that the posture when standing independently became worse especially when the remaining amount of the contents was less than half. .

  Moreover, according to the spouted gusset bag described in Patent Document 1, since the opening portion is folded back to the inside of the side surface portion, when the bag body is filled with the contents, the opening portion is opened by opening the side surface portion. There was a problem that it jumped out of the main body and not only had a bad appearance, but also hindered use when handling the gusset bag.

  Accordingly, an object of the present invention is to ensure stable independence regardless of the remaining amount of the contents, and with a spout capable of easily pouring the contents to the end regardless of the remaining amount. An object of the present invention is to provide a gusset bag with a spout that can easily provide a gusset bag and that prevents a portion that hinders use when handling the gusset bag with a spout from jumping out.

  The present invention has been made to achieve the above object, and is characterized by the following.

  A spouted gusset bag according to the present invention includes a bag body made of a film material and a spout attached to the bag body. The bag body has a cylindrical body, and the cylindrical bodies are a pair of opposed ones. And a pair of side surfaces bonded between side edge portions of the pair of plane portions, and the pair of side surface portions is formed to have a shorter dimension in the height direction than the pair of plane portions. In addition, a bonding portion that seals a region including the upper end edge of the side surface portion is formed on one of the pair of flat surface portions, and one of the both ends in the width direction of the upper portion of the bag body is inclined. An edge is formed, and the spout is attached to the inclined edge.

  Moreover, the spouted gusset bag which concerns on this invention WHEREIN: It is suitable when the said bonding part is formed over the width direction of the said plane part so that the upper end edge of a pair of said side part may be bonded together.

  Moreover, in the gusset bag with a spout according to the present invention, it is preferable that the one flat surface portion is formed with an inclined bonding portion extending obliquely from the inner side of the upper end edge of the side surface portion toward the side edge portion. .

  In the gusset bag with a spout according to the present invention, it is preferable that the bag body includes a bottom surface portion bonded to a lower edge portion of the cylindrical body.

  According to the present invention, the pair of side surface portions are formed to have a shorter dimension in the height direction than the pair of flat surface portions, and one of the pair of flat surface portions includes the upper edge of the side surface portion. Since it has a bonding part that seals the area, in addition to being able to maintain airtightness as a container and to prevent the contents from flowing out from the upper edge of the side surface part, the rigidity of the bag body by the bonding part As it improves, stable independence can be ensured regardless of the remaining amount of the contents, the contents can be easily poured out to the end regardless of the remaining amount, and the spouted gusset bag Parts that hinder use during handling do not pop out.

  Moreover, since the bonding part is formed in series over the width direction of the plane part so that the upper end edges of the pair of side parts are bonded together, the bonding work is simplified by bonding the pair of side parts simultaneously. Can be

  In addition, the upper corner of the bag body is cut obliquely to form an inclined edge on the bag body, and a spout is attached to this inclined edge, so that the remaining amount of the contents can be removed without greatly tilting the bag body. It can be easily poured out to the end regardless.

The perspective view which shows the gusset bag with a spout which concerns on this invention. The front view which shows the gusset bag with a spout which concerns on this invention. The front view which shows a spout. The figure which shows how to attach a spout. The front view which shows the state which formed the inclined edge part in the cylinder. The perspective view which shows the modification of the gusset bag with a spout which concerns on this invention.

  Next, one embodiment of the spouted gusset bag 10 according to the embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing a spouted gusset bag according to the present invention, FIG. 2 is a front view showing a spouted gusset bag according to the present invention, and FIG. 3 is a front view showing a spout. FIG. 4 is a view showing how to attach the spout, FIG. 5 is a front view showing a state in which an inclined edge portion is formed on the cylinder, and FIG. 6 is a modification of the gusset bag with a spout according to the present invention. FIG.

  As shown in FIG. 1, a gusset bag 10 according to the present embodiment includes a bag body 1 made of a film material such as polyester, and a spout 2 attached to the bag body 1 to communicate the inside and outside of the bag body 1. Has been. The spout 2 is sandwiched between a pair of flat portions 5 described later and attached to the bag body 1 by heat fusion.

  The bag body 1 is configured in a bag shape by bonding the lower edge portion of the cylindrical body 3 by heat sealing. An inclined edge portion 1a is formed on one of both ends in the width direction of the upper portion of the bag body 1 by cutting an upper corner portion of the flat portion 5 described later. In addition, it is preferable that the inclination edge part 1a is formed in the range whose angle | corner with a side edge part is 120-150 degrees.

  The cylindrical body 3 is formed of a pair of opposing flat surface portions 5 and a pair of side surface portions 6 bonded to each other between the side edges of the pair of flat surface portions 5 by thermal fusion. A heat fusion portion between the flat surface portion 5 and the side surface portion 6 is indicated by a long side fusion portion (W1) in FIG. Moreover, the opening part 1c which fills the contents is formed in the upper end of the bag main body 1, and this opening part 1c is obstruct | occluded by heat sealing | fusion after filling the contents. In addition, when not forming the opening part 1c, it is also possible to fill with the content from the front-end | tip of the spout 2. FIG.

  The flat surface portion 5 has a vertically long rectangular shape, and an inclined edge portion 1a is formed on the upper edge portion by obliquely cutting one of both ends in the width direction. On the side surface portion 6, a folding line (L 1) extending in the vertical direction is formed at the central portion in the thickness direction of the bag body 1. Side gussets are formed on both sides of the bag body 1 by allowing the side surface part 6 to be folded inside the bag body 1 according to the fold line (L1).

  The side surface portion 6 is formed to have a length dimension shorter than that of the flat surface portion 5, and when the side surface portion 6 is heat-sealed to the flat surface portion 5 so as to match the lower end of the flat surface portion 5, the upper portion of the flat surface portion 5 becomes the side surface portion. 6 is formed so as to form a superposed part 1b without 6 interposed.

  Further, the upper end edge of the side surface portion 6 is bonded to one inner surface of the flat surface portion 5 by a bonding portion (W3) extending along the width direction of the flat surface portion 5. The bonding portion (W3) is bonded to one inner surface of the flat surface portion 5 so as to seal the region including the upper end edge of the side surface portion 6, and is formed over the width direction of the flat surface portion 5, thereby forming a pair of The upper edge of the side parts 6 and 6 is bonded together. As described above, since the upper edge of the side surface portion 6 is bonded to the inner surface of the one flat surface portion 5, a part of the side surface portion 6 does not jump out of the bag body 1, and the gusset bag with spout is handled. Sites that prevent use are not formed. Moreover, since a pocket-shaped opening part is not formed by forming the bonding part (W3) in this way, the contents cannot enter the inside of the opening part and the entire contents cannot be poured out. Never become. Moreover, the bonding part (W3) seals the region including the upper end edge of the side surface part 6 and bonds the upper edge of the pair of side surface parts 6 and 6 in series by forming it over the width direction of the flat surface part 5. Therefore, the bonding operation can be simplified by bonding the pair of side surface portions 6 and 6 at the same time.

  Further, one flat surface portion 5 is bonded to the side surface portion 6 by thermal fusion with an inclined bonding portion (W4) extending inclinedly from the inner side of the upper end edge of the side surface portion 6 toward the side edge portion. This inclination bonding part (W4) is formed in each of both the side surface parts 6. FIG. When the contents are poured out, the contents are guided to the spout 2 along the inclined bonding portion (W4), so that the entire amount of the contents can be poured out smoothly.

  As shown in FIG. 3, the spout 2 is composed of a pipe-shaped spout body 7 formed with a spout 7a and a cap 8, and is attached to the inclined edge 1a of the bag body 1 at a right angle as shown in FIG. It has been. The spout body 7 is formed with an attachment portion 9, flange portions 10 a, 10 b, 10 c and a cap male screw portion 7 c that are heat-sealed to the bag body 1. A long hole 7b is formed in the lower part of the spout body 7, so that the contents can be poured out even when the bag body 1 is crushed. In addition, the long hole 7b does not largely incline the bag body 1 due to a synergistic effect with the effect of attaching the spout 2 to the inclined edge 1a of the bag body 1 when the content with a small remaining amount is poured out. Also, it has a function that can easily and surely dispense the contents to the end.

  As shown in FIG. 4, the spout 2 is sandwiched between a pair of flat portions 5 and attached to the bag body 1 by heat fusion. The heat fusion part of the spout 2 is the attachment part 9 (refer FIG. 3). Since the upper end edge of the side surface portion 6 (side gusset) is bonded to the inner surface of one flat surface portion 5 by the bonding portion W3, and the upper portion of the flat surface portion 5 is formed with the overlapping portion 1b, the spout 2 is attached. The portion 9 is in direct contact with the pair of flat portions 5, and when the spout 2 is attached, it becomes the thickness of two films by only the pair of flat portions 5, so there is no difference in thickness, and the heat plate is used. The contact pressure becomes uniform, there is no possibility that liquid tightness is impaired, and the spout 2 can be easily attached.

  Next, an example of the manufacturing method of the spouted gusset bag 10 according to the present embodiment will be described.

  First, a pair of side surface parts 6 and 6 are arrange | positioned in one plane part 5, and a sealing tape is heat-seal | fused in one plane part 5, and the bonding part (W3) is formed. Next, the other flat surface portion 5 is overlapped with the one flat surface portion 5, and as shown in FIG. 5, the pair of side surface portions 6 and the pair of flat surface portions 5 folded along the fold line (L1) are respectively connected. Are arranged with the lower end edges thereof aligned, and one end on the long side of the side surface portion 6 and one end on the long side of the flat surface portion 5 are bonded together by thermal fusion to form the long side fusion portion (W1). . Next, the lower end edge of the flat surface portion 5 and the side surface portion 6 are bonded to each other by heat fusion to form the lower edge adhesion portion (W2) to form a bag shape. Thereafter, one corner of the upper edge is cut obliquely to form an inclined edge 1a, and then a spout 2 is inserted into the inclined edge 1a as shown in FIG. 4 to heat-bond the inclined edge 1a. By doing so, the bag body 1 can be manufactured.

  Next, a method for bonding the upper portion of the bag body 1 will be described. The bonding portion (W3) is formed by bonding the upper end edge of the side surface portion 6 to the inner surface of one flat surface portion 5 using a bonding means such as a seal tape. Moreover, the plane part 5 and the side part 6 are bonded together by thermal fusion by the inclination bonding part (W4) which inclines and extends toward the side edge part from the inner side of the upper end edge of the side part 6 as needed. Thereafter, as described above, one edge of the flat portion 5 in the width direction is cut obliquely to form the inclined edge 1a. Finally, as described above, the spout 2 is attached to the inclined edge 1a, and after the contents are filled in the bag body 1, heat sealing is performed so as to close the opening 1c formed at the upper edge of the flat portion 5. Thus, the spouted gusset bag 10 is formed.

  The sealing tape may be made of any material as long as it is selected from materials that can be heat-sealed at least on both sides. For example, a single-layer film made of the same material as the heat-sealing layer described later, The intermediate layer may include polyester or polyamide, and both surfaces may be formed of a multilayer film made of the same material as the heat-sealing layer. Furthermore, the width of the sealing tape is preferably 15 to 50 mm, and the thickness of the sealing tape is preferably 20 to 150 μm. Further, the intermediate layer is not limited to one layer, and two or more layers may be provided as necessary, or a metal foil or a barrier film described later may be provided as the intermediate layer.

  Next, the structure and material of the bag body 1 will be described.

  The bag body 1 is made of a film material as described above, and it is sufficient that at least the base material layer and the heat fusion layer are laminated and the innermost layer is the heat fusion layer.

  The base material layer is preferably a film having excellent printability and further having pinhole resistance, impact resistance and the like. Examples of the material for the base material layer include polyester such as polyethylene terephthalate, polypropylene, polyamide, ethylene vinyl alcohol copolymer, and the like, and these biaxially stretched films and uniaxially stretched films are preferable. Moreover, in order to give these films a barrier property against oxygen and water vapor, a vapor deposition film obtained by vapor-depositing a metal such as aluminum or magnesium or a metal oxide such as silicon oxide or aluminum oxide, polyvinylidene chloride or ethylene vinyl. A film having a resin thin film layer such as an alcohol copolymer (hereinafter also referred to as “barrier film”) may be used. The base material layer may be a single body of the film or a laminate. The thickness of the base material layer is preferably 6 to 50 μm, and more preferably 9 to 30 μm.

  The heat sealing layer is a heat sealable layer. Examples of the material of the heat-sealing layer include polyolefins such as high-density polyethylene, low-density polyethylene, linear low-density polyethylene, and polypropylene. These unstretched films and multilayer films obtained by co-extruding these polyolefins in combination. Etc. are preferred. The thickness of the heat sealing layer is preferably 10 to 200 μm, and more preferably 20 to 150 μm.

  The film material may have an intermediate layer between the base material layer and the heat-sealing layer as necessary.

  Examples of the intermediate layer include a film having functionality such as oxygen barrier property, water vapor barrier property, impact resistance, and linear tearing property. Examples of the material for the intermediate layer include a metal foil such as aluminum, the above-described barrier film, and various functional films. Two intermediate layers may be provided as necessary. The thickness of the intermediate layer is preferably 6 to 50 μm, and more preferably 9 to 30 μm.

  A film material comprising a base material layer, a heat-sealing layer, and an intermediate layer used as necessary is laminated by a known method such as a dry laminating method using an adhesive or an extrusion laminating method using a heat-adhesive resin. Can be manufactured.

  In addition, it is preferable that the spout 2 mentioned above is the same material as the said heat-fusion layer.

  Furthermore, although the spouted gusset bag 10 according to the present embodiment has been described with respect to the case where the bag body is formed by heat-sealing the lower end edges of the flat portion 5 to each other, as shown in FIG. The bag body may be formed by bonding the bottom surface portion 4 to the lower end edge of the bag by heat fusion.

  In this case, the bottom surface portion 4 has a rectangular shape, the length dimension is equal to the width dimension of the flat surface portion 5, and the width dimension of the bottom surface portion 4 is equal to the width dimension of the side surface portion 6. The bottom surface portion 4 is bonded to the inner surface of the lower edge portion of the flat surface portion 5 and the side surface portion 6 forming the cylindrical body 3 ′ by thermal fusion. The bottom surface portion 4 can be folded into, for example, a ship shape to obtain a spouted gusset bag 10 ′ in which a bottom surface gusset is formed on the bottom portion of the bag body 1 ′.

1: Bag body 1a: Inclined edge portion 1b: Superposed portion 2: Spout 3: Cylindrical body 4: Bottom surface portion 5: Flat surface portion 6: Side surface portion 7: Spout main body 7a: Spout 7b: Long hole 7c: Male screw portion 8: Cap 9: Mounting portion 10a, 10b, 10c: Flange portion

Claims (4)

It is composed of a bag body made of a film material, and a spout attached to the bag body,
The bag body has a cylindrical body,
The cylindrical body is composed of a pair of opposed flat portions and a pair of side portions bonded between side edges of the pair of flat portions,
The pair of side surface portions are formed to have a shorter dimension in the height direction than the pair of flat surface portions, and one of the pair of flat surface portions includes a region including an upper edge of the side surface portion. A sealing part to be sealed is formed,
A gusset bag with a spout, wherein an inclined edge portion is formed on one of both ends in the width direction of the upper portion of the bag body, and the spout is attached to the inclined edge portion.   2. The spouted gusset bag according to claim 1, wherein the bonding portion is formed across the width direction of the planar portion so that the upper end edges of the pair of side surface portions are bonded together in series.   3. The spouted gusset according to claim 1, wherein the one flat portion is formed with an inclined bonding portion extending inclined from the inner side of the upper end edge of the side surface portion toward the side edge portion. bag.   The spout-equipped gusset bag according to any one of claims 1 to 3, wherein the bag body includes a bottom surface portion bonded to a lower edge portion of the cylindrical body.

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