JP2005067630A - Pouch container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pouch container, which securely prevents the deformation of the container, such as the folding of a spout or the like, at low cost. <P>SOLUTION: The pouch container comprises a container body 10, which is a bag-shaped flexible sheet consisting of a base material layer and a sealant layer, made of a thermal adhesive resin, formed on the inner surface of the base layer, and has the spout for pouring out a content. The container also includes an adhesive sheet 20 glued to the spout of the container body 10. The container body 10 is composed of a pair of front/back outer packaging sheets 11 and a gusset sheet 12, which is folded inward from the lower ends of both outer packaging sheets 11 to form a bottom gusset. The adhesive sheet 20 consists of a sheet base material 21 made of a plastic film, and an adhesive layer formed on the back of the sheet base material 21. A plurality of ribs 21a, which project on the surface side and extend toward the spout, are formed on the sheet base material 21. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a pouch container filled with a liquid commodity such as a shampoo or a detergent, and more particularly to a pouch container having a spout part.

  Liquid products such as shampoos and detergents were sold in the state of being filled in bottle containers, but in recent years, liquid products such as shampoos have been filled into simple pouch containers in order to effectively use bottle containers. Liquid products for refilling are sold.

  Therefore, the consumer first purchases the liquid product filled in the bottle container or the like. However, if the liquid product is used up, the consumer does not purchase a new liquid product filled in the bottle container or the like. Instead, a liquid product for refill, which is the same product filled in a simple pouch container, is purchased, and only the liquid product is refilled into an empty bottle container or the like.

  An example of such a pouch container filled with liquid goods for refilling is as shown in FIG. In this pouch container 50, as shown in the figure, the gusset sheet 52 is folded inward from the lower ends of the pair of front and back exterior sheets 51, 51, and the peripheral edge of the gusset sheet 52 is heat-sealed to the exterior sheets 51, 51. In addition, the outer peripheral sheets 51, 51 that do not overlap with the gusset sheet 52 are formed into a bag shape by heat-sealing each other, and the upper and lower corner portions are heat-sealed front and back. A protruding spout portion 50A is formed by the pair of exterior sheets 51, 51.

  Accordingly, a person who has purchased a liquid product filled in such a pouch container 50 opens the spout portion 50A by cutting off the tip of the spout portion 50A, and the opened spout portion 50A is bottled. The liquid commodity filled in the pouch container 50 is transferred to the bottle container by being inserted into the mouth of the container.

  By the way, in such a pouch container 50, since the contents must be able to be smoothly poured out in a stable state, the outer sheet 51 forming the spout 50A is embossed. Thus, by forming a plurality of reinforcing ribs 53 extending in the content pouring direction up to the spout portion 50A, deformation such as breakage of the spout portion 50A at the time of pouring the content is prevented. Yes.

JP 7-2260 A Japanese Patent Laid-Open No. 11-11498

  However, since the thickness of the exterior sheet 51 forming the pouch container 50 is not so large, a sufficient reinforcing effect can be obtained only by forming the plurality of reinforcing ribs 53 in the spout portion 50A. In addition, there is a problem that deformation such as breakage of the spout 50A that occurs when the contents are poured out cannot be reliably prevented.

  On the other hand, in order to improve the shape retention of the spout 50A, a pouch container may be formed using a strong exterior sheet. However, a strong exterior sheet is generally thick and the amount of resin used. In many cases, the material cost increases, and therefore, when a pouch container is manufactured using a stiff exterior sheet, there is a problem that the product cost of the pouch container 50 itself increases.

  Accordingly, an object of the present invention is to provide a pouch container that can reliably prevent deformation such as breakage of a spout portion at low cost.

  In order to solve the above-mentioned problem, the invention according to claim 1 is the pouch container having a spout part formed in a bag shape by a flexible sheet, and the outer surface of the spout part formed by the flexible sheet. The present invention provides a pouch container in which an adhesive sheet in which a rib extending toward the content outlet is formed is attached.

  In order to solve the above-mentioned problem, the invention according to claim 2 is a pouch container having a spout portion formed in a bag shape by a flexible sheet, wherein an adhesive region and a non-adhesive region are alternately arranged in a heat shrink direction. The heat-shrinkable adhesive sheet formed on is adhered to the outer surface of the spout portion formed by the flexible sheet so that the heat-shrink direction is substantially perpendicular to the content pour direction. The present invention provides a pouch container that is heat-shrinked in a state.

  As described above, the pouch container of the invention according to claim 1 is attached to the outer surface of the spout portion formed of the flexible sheet with the adhesive sheet formed with the ribs extending toward the spout of the contents. Therefore, compared to the conventional pouch container in which reinforcing ribs are directly formed on the flexible sheet forming the spout, the shape retention of the spout is improved and the contents are poured out. The breakage of the spout can be reliably prevented.

  In addition, in this pouch container, by sticking an adhesive sheet to the spout portion, the shape retaining property of the spout portion is partially enhanced, so in order to increase the shape retaining property of the spout portion, Compared with the case where the pouch container is formed using a thick, thick flexible sheet, a pouch container having an equivalent function can be manufactured at a low cost.

  The pouch container of the invention according to claim 2 is a heat-shrinkable adhesive sheet in which adhesive regions and non-adhesive regions are alternately formed in the heat-shrink direction, and the heat-shrink direction is the content dispensing direction. Since it is heat-shrinked in a state of being adhered to the outer surface of the spout portion formed by the flexible sheet so as to be substantially orthogonal to the adhesive sheet, it is not adhered to the adhesive sheet when the adhesive sheet is thermally contracted The non-adhesive portion of the flexible sheet is bent into a wrinkle shape, and a rib extending in the content dispensing direction is formed.

  Therefore, in this pouch container, not only is the rib extending in the direction of dispensing the contents formed on the flexible sheet forming the spout part, but also the adhesive sheet is attached to the spout part, Compared to a conventional pouch container in which a reinforcing sheet is simply formed on the flexible sheet forming the spout, the shape retention of the spout is improved, and the spout when the contents are poured out The breakage of the part can be reliably prevented.

  Moreover, in this pouch container, since a rib can be formed in the spout part simply by sticking a heat-shrinkable adhesive sheet to the spout part and heat-shrinking the adhesive sheet, the pouch container is made into a bag. At this time, there is an advantage that the ribs can be easily formed by heat-pressing the flexible sheet itself as compared with the case where the reinforcing ribs are formed in the spout portion.

  Moreover, in this pouch container, since the adhesive sheet is adhered to the spout part, the shape retaining property of the spout part is partially enhanced, as in the pouch container of the invention according to claim 1. In order to improve the shape retaining property of the spout portion, a pouch container having an equivalent function can be manufactured at a lower cost compared to the case where the pouch container is formed of a thick flexible sheet with a waist.

  Hereinafter, embodiments will be described with reference to the drawings. As shown in FIG. 1, this pouch container 1 is formed into a bag shape by a flexible sheet in which a sealant layer made of a thermoadhesive resin such as polyethylene or polypropylene is laminated on the inner surface side of a base material layer made of polyethylene terephthalate or polyamide. The container main body 10 which has the spout part of the content formed in this, and the adhesive sheet 20 affixed on the spout part of this container main body 10 are comprised.

  As shown in the figure, the container body 10 is formed of the above-described flexible sheet and is folded inward from the lower ends of the pair of front and back exterior sheets 11 and 11 and both exterior sheets 11 and 11 to form a bottom gusset portion. The outer peripheral edge of the folded gusset sheet 12 is heat-sealed to the inner surface of the outer sheet 11, 11, and the outer sheet 11, 11 that does not overlap the gusset sheet 12 is formed. The peripheral portions are heat-sealed to form a bag shape. Note that the shaded display portion in FIG. 1 indicates the heat seal portion of the container body 10.

  Further, as shown in the figure, a notch portion 12a is formed at the lower end portion of the joint edge side of the gusset sheet 12 in a folded state, and a pair of front and back exterior sheets are provided via the notch portion 12a. 11, 11 are mutually point-sealed (heat sealed). Thus, the notch part 12a was formed in the gusset sheet 12 in order to provide stable independence by fixing the lower ends of both side edges of the pair of front and back exterior sheets 11 and 11 to each other.

  The container main body 10 has one upper corner portion serving as a spout portion, and the container main body 10 is opened by cutting the spout portion (upper corner portion) at a position indicated by a two-dot chain line in FIG. A spout is formed in the container body 10.

  As shown in FIG. 2, the pressure-sensitive adhesive sheet 20 includes a sheet base 21 having a thickness of 50 to 100 μm (in this case, 60 μm) made of a plastic film such as a polyethylene terephthalate film or a polypropylene film, and a back surface of the sheet base 21. It is composed of an adhesive layer 22 made of an adhesive such as acrylic, rubber, urethane, etc., laminated on the side, except for the excision region in the upper corner portion of the container body 10 that is excised when opening, It has a shape and a size that cover the spout portion of the container body 10.

  As shown in FIGS. 1 and 2, a plurality of ribs 21 a having a width of 1 mm and a height of 0.3 to 0.5 mm extending toward the spout are formed on the sheet base 21. As shown in FIG. 3, the rib 21a fits into a mold D1 having a groove g having a width of 1 to 2 mm and a depth of 0.3 to 0.5 mm, and the groove g of the mold D1. The sheet base 21 is sandwiched between the forming die D2 having the protruding strips p with a width of 0.88 to 1.88 mm and a height of 0.24 to 0.44 mm.

  As described above, the pouch container 1 has the pressure-sensitive adhesive sheet 20 on which the ribs 21 a extending toward the content outlet are formed on the outer surface of the outlet portion formed by the exterior sheet 11. Therefore, compared to conventional pouch containers in which reinforcing ribs are formed directly on the exterior sheet forming the spout, the shape retention of the spout is improved, and the content is poured when the contents are poured out. The breakage of the exit portion can be reliably prevented.

  Moreover, in this pouch container 1, since the shape retention property of a spout part is partially improved by sticking the adhesive sheet 20 to a spout part, in order to improve the shape retention property of a spout part. In addition, a pouch container having an equivalent function can be manufactured at a lower cost than when a pouch container is formed using a thick, thick exterior sheet.

  4 to 6 show other embodiments. Since this pouch container 2 also has basically the same configuration as that of the above-described pouch container 1, the same components are denoted by the same reference numerals, description thereof is omitted, and the adhesive sheet is a different component. 30 will be described in detail.

  As shown in FIGS. 5A and 5B, the pressure-sensitive adhesive sheet 30 has a rectangular thickness formed of a heat-shrinkable film stretched in the short direction made of a polyester resin, a polystyrene resin, or the like. The sheet base 31 is 40 to 80 μm (in this case, 50 μm), and the pressure-sensitive adhesive layer 32 is made of an acrylic, rubber-based, or urethane-based pressure-sensitive adhesive laminated on the back side of the sheet base 31. In other words, the heat shrink direction of the sheet base material 31 is substantially perpendicular to the content dispensing direction, so that the short side is along the opening line of the spout port indicated by the two-dot chain line in FIG. Thus, the sheet | seat base material 31 is heat-shrinked in the state stuck on the spout part formed with the exterior sheet | seat 11. As shown in FIG. In addition, the heat-shrinkable film which forms the sheet | seat base material 31 is set to 30% or more, for example, when the heat-shrinkable film is immersed in 80 degreeC warm water for 10 second.

  In addition, the adhesive layer 32 is not formed on the entire back surface of the sheet base material 31, and as shown in FIGS. 5A and 5B, for example, an adhesive region having a width of 1 to 2 mm, and, for example, A non-adhesive region having a width of 1 to 2 mm is intermittently formed with a predetermined interval (for example, 1 to 2 mm) so that the non-adhesive regions are alternately formed in the heat shrink direction of the sheet base material 31. As shown to 6 (a), in the state stuck on the outer surface of the spout part formed with the exterior sheet 11, only the part in which the adhesion layer 32 is formed forms the spout part. It will be fixed to the exterior sheet 11.

  Therefore, when the sheet base material 31 is heated in a state where the adhesive sheet 30 is adhered to the outer surface of the spout portion as shown in FIG. The part which is not fixed to the exterior sheet 11 in 31 is thermally contracted, and accordingly, the non-attached part of the exterior sheet 11 to which the sheet base material 31 is not attached is bent into a wrinkle shape, and is shown in FIG. As described above, a large number of ribs 11a extending in the content pouring direction are formed.

  As described above, in this pouch container 2, not only the rib 11a extending in the content pouring direction is formed on the exterior sheet 11 forming the pouring port portion, but also the adhesive sheet 30 is formed at the pouring port portion. Because it is affixed, the shape of the spout is improved compared to conventional pouch containers that simply form reinforcing ribs on the exterior sheet that forms the spout. It is possible to reliably prevent the breakage of the spout portion at the time of pouring.

  Moreover, in this pouch container 2, since the rib 11a can be formed in a spout part only by sticking the adhesive sheet 30 which has heat-shrinkability to a spout part, and heat-shrinking this, a pouch container is used. When making a bag, the outer sheet itself forming the spout portion is heated and pressed, so that the rib can be easily formed as compared with the case where the reinforcing rib is formed in the spout portion. Similarly to the pouch container 1 described above, by sticking the adhesive sheet 30 to the spout part, the shape retaining property of the spout part is partially enhanced, so the shape retaining property of the spout part is enhanced. For this reason, there is an advantage that a pouch container having the same function can be manufactured at a low cost as compared with the case where the pouch container is formed using a thick and thick exterior sheet.

  In this pouch container 2, the pressure-sensitive adhesive sheet 30 is constituted by a sheet base material having a flat surface. However, the present invention is not limited to this, and for example, the pressure-sensitive adhesive layer 32 in the sheet base material 31 is not formed. It is also possible to form ribs in advance in the non-adhesive region, and by adopting such a configuration, the shape retention of the spout portion can be further improved.

  Moreover, in embodiment mentioned above, although the adhesive sheets 20 and 30 by which the adhesive layers 22 and 32 were laminated | stacked on the back surface side of the sheet | seat base materials 21 and 31 are stuck to a spout part, it is limited to this. Instead of the adhesive layers 22 and 32, a heat-sensitive adhesive layer such as hot melt may be laminated on the back side of the sheet base materials 21 and 31. However, when the sheet substrate is formed of a heat-adhesive film, it is desirable to laminate an adhesive layer.

  Moreover, in embodiment mentioned above, although the flat adhesive sheets 20 and 30 are stuck to the spout part, it is not limited to this, The adhesive sheet itself is shape | molded by the solid shape which opens a spout. If this is the case, the contents can be poured out further.

  In the above-described embodiment, the bottom gusset type pouch container having self-supporting properties has been described. However, the present invention is not limited to this, and a flat bag type can be used as long as it has a spout portion formed by an exterior sheet. Needless to say, the present invention can also be applied to various pouch containers such as the side gusset type.

It is a front view showing one embodiment of a pouch container concerning this invention. It is sectional drawing which shows the spout part in a pouch container same as the above. It is explanatory drawing for demonstrating the manufacturing method of the adhesive sheet used for the pouch container same as the above. It is a front view which shows the pouch container which is other embodiment. (A) is a back view which shows the adhesive sheet currently used for the pouch container same as the above, (b) is sectional drawing which shows an adhesive sheet same as the above. (A) is sectional drawing which shows the state which stuck the adhesive sheet same as the above to the spout part of a container main body, (b) is sectional drawing which shows the state which heat-shrinked the adhesive sheet stuck to the spout part. is there. It is a front view which shows the conventional pouch container.

Explanation of symbols

1, 2 Pouch container 10 Container body 11 Exterior sheet 11a Rib 12 Gusset sheet 12a Notch 20, 30 Adhesive sheet (adhesive sheet)
21, 31 Sheet base material 21a Rib 22, 32 Adhesive layer

Claims (2)

In a pouch container having a spout portion formed in a bag shape by a flexible sheet,
A pouch container, wherein an adhesive sheet formed with ribs extending toward the content outlet is attached to an outer surface of the outlet portion formed by the flexible sheet. In a pouch container having a spout portion formed in a bag shape by a flexible sheet,
A heat-shrinkable adhesive sheet in which adhesive regions and non-adhesive regions are alternately formed in the heat-shrink direction is formed by the flexible sheet so that the heat-shrink direction is substantially perpendicular to the content dispensing direction. A pouch container that is heat-shrinked in a state of being adhered to the outer surface of the spout port.

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