JP2005225508A - Pouch container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pouch container having a side gusset part that can be used as a surface for effective design display, and is superior in stable self-supporting. <P>SOLUTION: The pouch container comprises a container body 10 and a spout 20 attached to the container body 10. The container body 10 has a bag shape, which is formed of a pair of front/back outer package sheets 11, 11 and a pair of left/right gusset sheets 12a, 12b that are folded inward at both sides of the outer package sheets 11, 11 to form left/right gusset parts, respectively. According to the package body 10, a folding extent La of the gusset sheet 12a is larger than a folding extent Lb of the gusset sheet 12b, and the outer package sheets 11, 11, which are heat sealed together, at the gusset sheet 12a folded to a greater extent and the upper side of the side edges of the gusset sheets 12a, 12b are sloped toward the spout 20 so that a folding extent on the upper side is smaller than that on the lower side at the gusset sheet 12a folded to the greater extent. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a pouch container filled with a liquid beverage such as a soft drink, a liquid such as a food, a medicine, or a detergent, or a viscous material.

  In recent years, as a container for filling a liquid beverage such as a soft drink, for example, as shown in FIGS. 5A to 5C, the gusset sheet 51b is folded inward from both sides of a pair of front and back exterior sheets 51a, A side gusset type container main body 51 formed in a bag shape by heat-sealing the peripheral portion of the gusset sheet 51b to the exterior sheet 51a and heat-sealing the upper edge portion and the lower edge portion of the exterior sheet 51a to each other. In addition, a pouch container 50 equipped with a spout 52 capable of opening and closing a mouth portion serving as a mouthpiece or a spout by a mouth cap such as a screw cap has been used.

  In such a pouch container 50, as shown in FIG. 6A, a pair of front and back exterior sheets 51a are formed in a substantially rectangular shape, and a pair of left and right gusset sheets that are folded between the pair of front and back exterior sheets 51a. 51b is also generally formed in a substantially rectangular shape, and the left and right gusset sheets 51b are set to have the same width, that is, the folding amount L. In addition, like the pouch container 50A shown in FIG. 5B, there is a case where the lower end corner portion where the exterior sheet 51a and the gusset sheet 51b are heat-sealed is cut off.

Japanese Patent Laid-Open No. 10-72044

  By the way, the width of the side gusset part in such a side gusset type pouch container is determined by the amount of folding of the gusset sheet, but the amount of folding of the gusset sheet depends on the width of the exterior sheet and the width of the spout to be inserted. As described above, in the pouch container 50 in which the left and right gusset sheets 51b are set to have the same width as described above, the width of the side gusset portion cannot be increased freely, and between the exterior sheets 51a. Since the upper edge portions of the gusset sheet 51b folded into each other are fixed to each other, the upper side of the side gusset portion is difficult to open, and the upper side of the side gusset portion is difficult to see as the amount of folding of the gusset sheet 51b increases. There is a tendency to become.

  Therefore, in the pouch container 50 as described above, the side gusset portion cannot be used as an effective display surface, and the two surfaces of the front side and the back side formed by the exterior sheet 51a are mainly used as display surfaces for the design. I use it.

  In addition, in such a side gusset type pouch container, the self-supporting stability can be improved by increasing the width of the side gusset portion. However, as described above, the side gusset portion There is also a problem that it is difficult to ensure sufficient self-supporting stability in the pouch container 50 that cannot be increased freely.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a pouch container that can use a side gusset portion as an effective display surface for design and has excellent self-standing stability.

  In order to solve the above problems, the invention according to claim 1 has a pair of front and back exterior sheets, and a pair of left and right gusset sheets that are folded inward from both sides of both exterior sheets to form a gusset portion, In the pouch container formed in a bag shape, the peripheral edge portion of the gusset sheet is heat sealed to the exterior sheet and the upper edge portion and the lower edge portion of the exterior sheet are heat sealed to each other. The folding amount of the gusset sheet is larger than the folding amount of the other gusset sheet, and the folding amount on the upper side of the gusset sheet having a large folding amount is smaller than the folding amount on the lower side, A side edge of the exterior sheet and the gusset sheet that are heat-sealed to each other on the gusset sheet side having a large folding amount is inclined. There is provided an inner container.

  The pair of front and back exterior sheets and the pair of left and right gusset sheets referred to here are not limited to those that are separated and independent, for example, one gusset sheet and the other exterior The exterior sheet and the gusset sheet are preliminarily arranged like one sheet in which the sheet and the other gusset sheet are successively arranged, or one sheet in which the gusset sheets are respectively arranged on both side edges of the one exterior sheet. Also included are those formed by heat-sealing one continuous sheet in a folded state and then punching into a predetermined shape.

  As described above, in the pouch container of the invention according to claim 1, since the folding amount of any one of the gusset sheets is larger than the folding amount of the other gusset sheet, the folding amounts of the left and right gusset sheets are Compared to conventional pouch containers that are set the same, the width of one side gusset portion can be increased without increasing the internal volume and width of the exterior sheet, and the upper part of the gusset sheet that has a large amount of folding Side gusset part because the side edges of the exterior sheet and the gusset sheet are heat-sealed on the gusset sheet side where the folding amount is large so that the folding amount on the side is smaller than the folding amount on the lower side The upper side of the side gusset is easy to open, and along with this, the upper side of the side gusset is easier to see. It is possible to use as a Do display surface.

  Further, in this pouch container, as described above, the width of one side gusset part is made larger than the width of the side gusset part in the conventional pouch container in which the folding amounts of the left and right gusset sheets are set to be the same. Therefore, it is possible to improve the self-supporting stability.

  Hereinafter, embodiments will be described with reference to the drawings. As shown in FIGS. 1 and 2, this pouch container 1 includes a sealant made of a heat-adhesive resin such as polyethylene or polypropylene on the inner surface side of a base sheet such as a polyester film in which a gas barrier sheet such as aluminum foil is laminated. It is comprised from the container main body 10 formed in the bag shape with the flexible sheet in which the layer was laminated | stacked, and the spout 20 formed with the thermoadhesive resin attached to this container main body 10. FIG.

  2 (a) to 2 (c), the container body 10 is formed from the above-described flexible sheet, and is formed from the front and back pair of exterior sheets 11, 11 and both sides of the exterior sheets 11, 11. It comprises a pair of left and right gusset sheets 12a, 12b that are folded to form left and right gusset portions. As shown in FIG. 3, the inner peripheral edges of the folded gusset sheets 12a, 12b are exterior sheets 11, 11 In addition, the upper and lower edges of the inner surfaces of the exterior sheets 11 and 11 are heat-sealed to form a bag shape. Note that the shaded display portion in FIG. 3 indicates the heat seal portion of the container body 10.

  The folding amount La of one gusset sheet 12a is set to 1.3 to 3.0 times the folding amount Lb of the other gusset sheet 12b, and both folded between the pair of front and back exterior sheets 11, 11. The spout 20 is disposed at the approximate center between the gusset sheets 12a and 12b.

  Further, the outer sheet 11, 11 is formed with a narrow upper end side, but considering the workability when inserting the spout 20 into the container body 10 formed in a bag shape, the outer sheet 11, 11, at least heat seal portions of 15 mm sheets are secured on both sides of the heat-sealed spout 20, and the folding amount on the upper side of the gusset sheets 12 a and 12 b is the folding amount on the lower side. The side edges of the exterior sheets 11 and 11 and the gusset sheets 12a and 12b heat-sealed to each other have inclined portions Sa and Sb whose upper sides are inclined to the spout 20 side so as to be smaller.

  The side edges of the heat-sealed exterior sheets 11 and 11 and the gusset sheets 12a and 12b have vertical portions Va and Vb below the respective inclined portions Sa and Sb. In consideration of positioning the container body 10 by guiding the vertical parts Va and Vb when the spout 20 is inserted into the container body 10 in the bag process, the vertical parts Va and Vb are arranged on the exterior sheet 11 (gusset The length is set to 1/3 or more of the total length (total height) of the sheet 12a).

  In particular, the inclined portion Sa of the side edge on the gusset sheet 12a side where the folding amount is large is set to 60 to 80 degrees, and the upper side of the gusset sheet 12a is easily spread. The reason why the inclination angle θ of the inclined portion Sa is set to 60 to 80 degrees is that when the inclination angle θ of the inclined portion Sa is less than 60 degrees, the appearance deteriorates, and the inclination angle θ of the inclined portion Sa exceeds 80 degrees. This is because the upper side of the gusset sheet 12a is difficult to spread.

  In addition, the lower side of the exterior sheets 11 and 11 (below the one-dot chain line in FIG. 3), which becomes the bottom surface of the container body 10 when the contents are filled, are mutually heat-sealed as shown in FIG. Lines extending to the folding edges of the left and right gusset sheets 12a and 12b at an angle θ1 of 45 degrees from the lower ends Xa and Xb of the inner edge of the heat seal portion at the side edges of the sheets 11 and 11 and the gusset sheets 12a and 12b Heat seal portions are formed below the lines such that the lines connecting the intersections Ya and Yb with the folding edges of the two are the inner edges, and a predetermined seal width is secured along the inner edges. As described above, the outer shapes of the exterior sheets 11 and 11 and the gusset sheets 12a and 12b are determined.

  As shown in FIG. 3, the spout 20 is made of polyethylene, polypropylene, or the like, and is opened and closed by a fixing portion 21 attached to the bag-like container body 10 and a screw cap 22 provided on the fixing portion 21. A mouth part that can be a mouthpiece or a pouring mouth and a lead-out part 23 having a cross-shaped cross section for sucking up the contents filled in the container body 10 provided at the lower part of the fixing part 21. In the state where the lead-out portion 23 is inserted into the container main body 10, the side surface of the fixing portion 21 is heat-sealed to the upper edge portion of the container main body 10 (the exterior sheets 11 and 11).

  As described above, in this pouch container 1, since the folding amount of one gusset sheet 12a is larger than the folding amount of the other gusset sheet 12b, the folding amounts of the left and right gusset sheets are set to be the same. The width of the side gusset portion formed by one of the gusset sheets 12a can be increased without increasing the internal capacity and the width of the exterior sheets 11 and 11, as compared with the conventional pouch container, and the amount of folding is increased. The upper side of the side edges of the exterior sheets 11 and 11 and the gusset sheet 12a that are heat-sealed on the gusset sheet 12a side so that the folding amount on the upper side of the large gusset sheet 12a is smaller than the folding amount on the lower side. The upper side of the wide side gusset part is easy to open. Since the upper side of the root section is easy to see, not only the outer sheet 11 and 11 parts, it is possible to use a side gusset portions formed by the large gusset sheet 12a is folded weight as an effective display surface of the design.

  Further, unlike the conventional pouch container in which the amount of folding of the right and left gusset sheets is set to be the same, the container body 10 has a characteristic “rice ball shape” when the contents are filled. Therefore, it has the discrimination power with respect to the same kind of pouch container, and can attain differentiation from other products.

  Further, as described above, the pouch container 1 has a side gusset portion formed by the gusset sheet 12a that is wider than the case where the folding amounts of the left and right gusset sheets are set to be the same. The effect that the property can be improved is also obtained.

  In the above-described embodiment, the side edge on the side of the gusset sheet 12b with a small folding amount is also inclined on the upper side toward the spout 20 side, but is not limited thereto, and is not necessarily limited to the inclined portion Sb. There is no need to provide.

  In the above-described embodiment, the left and right gussets are at an angle θ1 of 45 degrees from the lower ends Xa and Xb of the inner edges of the heat-sealed portions at the side edges of the exterior sheets 11 and 11 and the gusset sheets 12a and 12b that are heat-sealed with each other. The heat seal portion is formed below the lines such that the lines extending to the folding edges of the sheets 12a and 12b and the lines connecting the intersections Ya and Yb of the folding edges of the lines are the inner edges. However, the present invention is not limited to this. For example, as in the pouch container 1A shown in FIG. 4, the angle θ1 of the line extending from the lower end Xa serving as the inner edge of the heat seal portion to the folding edge of the gusset sheet 12a is set to 45 degrees. It is also possible to set the following (in this case, θ1 = 30 degrees). In this case, a two-dot chain line shown in FIG. When the lower side of the point Xc intersecting the inner edge of the heat seal portion at the side edge of 12a and the lower end Xb of the inner edge of the heat seal portion at the side edge of the gusset sheet 12b is filled with the contents, the container body 10 is the bottom surface.

  In the above-described embodiment, the pouch container 1 in which the spout 20 is attached to the bag-shaped container body 10 has been described. However, the present invention is not limited to this, and the present invention is applied to a pouch container without a spout. It goes without saying that it can be done.

It is a perspective view showing one embodiment of a pouch container concerning this invention. (A) is a front view showing the same pouch container, (b) is one side view showing the same pouch container, and (c) is the other side view showing the same pouch container. It is a front view which shows the state which folded the pouch container same as the above. It is a front view which shows the state which folded the pouch container which is other embodiment. (A) is a perspective view which shows the conventional pouch container, (b) is a front view which shows a pouch container same as the above, (c) is a side view which shows a pouch container same as the above. (A) is a front view which shows the state which folded the pouch container same as the above, (b) is a front view which shows the modification of the pouch container shown to (a).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 1A pouch container 10 Container main body 11 Exterior sheet 12a, 12b Gusset sheet 20 Spout 21 Fixing part 22 Screw cap 23 Derivation part Sa, Sb Inclination part Va, Vb Vertical part

Claims (1)

A pair of front and back exterior sheets, and a pair of left and right gusset sheets that are folded inward from both sides of both exterior sheets to form a gusset portion,
In the pouch container formed in a bag shape, the peripheral edge portion of the gusset sheet is heat sealed to the exterior sheet and the upper edge portion and the lower edge portion of the exterior sheet are mutually heat sealed,
The folding amount of one of the gusset sheets is larger than the folding amount of the other gusset sheet,
The gusset sheet has a large folding amount, and the gusset sheet has a large folding amount so that the folding amount on the upper side of the gusset sheet is smaller than the folding amount on the lower side. A pouch container having a side edge inclined.

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