JP2019014484A - Gusset container - Google Patents

Abstract

To provide a gusset container 100 and its manufacturing method, which is excellent in standing stability, high volume efficiency during transportation and with low installation cost.SOLUTION: A gusset container has two outer films 110 bonded together at its upper side border 111a and has side borders of the outer film 110 and a gusset film 120 bonded at its lower side border 111b. The gusset film 120 has a widening part 122 which becomes wider as it goes from its upper end to a downward direction. A bottom surface 124 is formed by folding the gusset films 120 inside at a predetermined location.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a gusset container configured three-dimensionally using a film-shaped packaging substrate. The gusset container of the present invention is particularly suitable when applied to a container filled with fluid contents (food, medicine, etc.) such as liquid or jelly.

  Conventionally, a gusset container configured three-dimensionally using a film-shaped packaging substrate is known as a container for filling a fluid content.

  In the gusset container, the width (depth of the container) of the gusset portion provided on the side surface is widened to enable self-supporting.

  For example, the following Patent Documents 1 to 4 are known as documents disclosing the structure of the gusset container.

  The packaging container of patent document 1 enables self-supporting by folding a gusset part inward and expanding the blade | wing part formed in the lower end part by the folding. When filling the packaging container with the contents, the upper left and right ends are sandwiched between claws, and the gap between the claws is narrowed and air is sealed from above the open end. , Its open end is open.

  The packaging container of patent document 2 is provided with the gusset part over the whole side surface. A container that can stand on its own from one sheet is formed by continuously widening the width of the front portion from the bottom surface side to the upper end portion and continuously reducing the width of the side surface portion from the bottom surface side to the upper end portion. I'm assembling.

  The packaging container of patent document 3 is provided with the gusset part over the whole side surface. And the bottom view is formed by folding the lower end part of an exterior sheet inside.

  The packaging container of patent document 4 is provided with the gusset part over the whole side surface. And the bottom view is formed by folding the lower end part of a gusset part inside.

JP 9-30536 A JP-A-11-222246 JP2002-145287 JP2014-189319

  However, the gusset containers described in Patent Documents 1-4 have a drawback that the self-supporting stability is insufficient. In particular, the gusset containers of Patent Documents 1 and 2 are not suitable for a self-supporting gusset container because the bottom surface tends to bulge in a convex shape when the contents of the fluid are filled.

  In addition, in the gusset containers of Patent Documents 1 and 2, since the gusset portion is formed by folding the gusset portion inward, it is difficult to form the gusset portion sufficiently wide. In addition to not being able to ensure stable independence, there is a drawback in that volumetric efficiency during transportation is poor.

  Further, since the gusset container of Patent Document 2-4 is provided with a gusset portion over the entire side surface, when filling the contents, the upper left and right ends cannot be sandwiched by the gripper for the standing pouch. There is a disadvantage that the introduction cost is high because a filling machine dedicated to the gusset container is required.

  An object of the present invention is to provide a gusset container that is excellent in self-supporting stability, has a high volumetric efficiency during transportation, and is inexpensive to introduce, and a method for manufacturing the same.

  In view of the above problems, the gusset container according to the invention of claim 1 is a gusset container having a pair of exterior films that form the front and back surfaces and a pair of gusset films that form part of both side surfaces, The pair of exterior films are sealed at the upper side edges extending from the upper ends of the pair of exterior films to the side edges of the exterior films and at the lower side edges below the upper side edges. A side edge portion of the exterior film and a side edge portion of the gusset film are sealed, and the pair of gusset films has a widened portion that widens downward from an upper end thereof, and the pair of gusset films are defined as predetermined. A bottom surface portion is formed by folding inward at the position.

  In addition to the configuration of claim 1, the invention of claim 2 is such that, in the vicinity of the center of the lower edge portion of the exterior film, the lower edges of the exterior film are sealed, and other than near the center, The lower edge portion of the exterior film is sealed with the pair of gusset films.

  In addition to the structure of claim 2, the invention of claim 3 is formed by folding the pair of gusset films into the inside of the bottom surface of the portion where the lower edges of the exterior film are directly sealed. A notch portion is provided for facilitating.

  According to a fourth aspect of the invention, in addition to the configuration of the third aspect, the cut portion is substantially semicircular.

  According to a fifth aspect of the present invention, in addition to the configuration according to any of the second to fourth aspects, the bottom edge portion of the exterior film and the pair of gusset films are sealed from the bottom surface portion in the front-back direction. It has the blade | wing part extended outside, It is characterized by the above-mentioned.

  A manufacturing method of a gusset container according to the invention of claim 6 is the manufacturing method of the gusset container according to any one of claims 1 to 4, wherein the pair of gusset films are respectively bent and the pair of gusset films is The first step of sandwiching the pair of exterior films while being inclined so as to approach each other on the lower side, and sealing the side edges at the top of the pair of exterior films, and the pair of exterior films and A second step of sealing an outer edge portion of a portion where the pair of gusset films overlap, and a third step of cutting off a portion of the pair of gusset films protruding outward from the outer edges of the pair of exterior films. It is characterized by that.

  In addition to the structure of claim 6, the invention of claim 7 includes a fourth step of folding the pair of gusset films inward at a predetermined position, and a housing portion formed of the exterior film and the gusset film. And a fifth step of filling the contents.

  The invention according to claim 8 is characterized in that, in addition to the configuration according to claim 6 or 7, the method further includes a step of cutting out a portion of the pair of exterior films that protrudes outward from the outer edges of the pair of gusset films. To do.

  According to the first aspect of the present invention, the gusset portion is formed by providing a gusset film having a shape that widens from the upper side to the lower side on both side portions of the gusset container, and the bottom portion is formed by folding these gusset films inward. did. Therefore, according to the first aspect of the present invention, the side surface on which the gusset portion is formed is not folded into the right and left and recessed inward, but can be expanded sufficiently to the left and right. Independence when placed can be improved and sufficient volumetric efficiency can be secured.

  According to the invention of claim 1, by providing a portion where the side edges of the exterior film are sealed to each other at the top of both side edges, the top is flat and the bottom is three-dimensional. Since the gusset container is formed, the contents of the gusset container can be filled in a state where the vicinity of the upper ends of these side edges are sandwiched by a gripper or the like. Therefore, according to the first aspect of the present invention, since a normal filling machine for a standing pouch can be used, the introduction cost is low.

  According to the invention of claim 2, it becomes easy to fold the gusset film inward, and sufficiently stable self-supporting property can be obtained.

  According to the invention of claim 3, it becomes easier to fold the gusset film inward by providing the cut portion.

  According to the invention of claim 4, by making the cut portion into a substantially semicircular shape, the cut portion can be hardly broken by external stress.

  According to the invention of claim 5, the self-supporting stability can be further improved by providing the blade portion.

  According to invention of Claim 6, the gusset container of this invention can be manufactured only by a simple process.

  According to the seventh aspect of the present invention, the gusset container manufactured in the fifth aspect can be filled with the contents by only a simple process.

  According to invention of Claim 8, the external appearance of a gusset container can be prepared by excising the part which protruded the outer side from the outer edge of the gusset film of the exterior film.

It is the schematic of the external appearance of the gusset container which concerns on Embodiment 1 of this invention, (a) is the perspective view seen from the plane side, (b) is the perspective view seen from the bottom face side. It is sectional drawing which looked at the horizontal cross section along the AA line of Fig.1 (a) from the top. It is the schematic of the external appearance of the gusset container which concerns on the same Embodiment 1, (a) is a front view, (b) is a side view, (c) is a bottom view. (A)-(c) is a conceptual diagram for demonstrating the manufacturing process of the gusset container which concerns on the same Embodiment 1. FIG. (A)-(d) is a conceptual diagram for demonstrating the manufacturing process of the gusset container which concerns on the same Embodiment 1. FIG. It is the schematic of the external appearance of the gusset container which concerns on Embodiment 2 of this invention, (a) is the perspective view seen from the plane side, (b) is the perspective view seen from the bottom face side. It is the schematic of the external appearance of the gusset container which concerns on the same Embodiment 2, (a) is a front view, (b) is a side view, (c) is a bottom view. (A), (b) is a conceptual diagram for demonstrating the manufacturing process of the gusset container which concerns on the same Embodiment 2. FIG.

Embodiment 1 of the Invention
Embodiment 1 of the present invention will be described below with reference to FIGS.

  As shown in FIGS. 1 to 3, the gusset container 100 according to the first embodiment is formed into a substantially rectangular bag shape when viewed from the front using a pair of exterior films 110 and a pair of gusset films 120. ing.

  The pair of exterior films 110 are used for forming the front surface 101 and the back surface (not shown) of the gusset container 100.

  Of the side edge portions 111 of the exterior film 110, the upper side edge portions 111a (that is, portions extending from the upper end of the exterior film 110 to a predetermined length) are sealed to each other by, for example, heat sealing. The length of the upper side edge 111a is arbitrary, and may be determined according to the overall dimensions of the gusset container 100, the size of the gripper that holds the gusset container 100 in the step of filling the contents (described later), and the like. For example, it is about 40-50 mm.

  On the other hand, among the side edge portions 111 of the exterior film 110, the lower side edge portion 111b (that is, from the lower end of the upper side edge portion 111a to the lower end of the side edge portion 111 of the side edge portion 111 of the exterior film 110). The portion) is sealed with the corresponding side edge 121 of the gusset film 120 by, for example, heat sealing.

  The side surface 102 formed by the pair of gusset films 120 includes a widened portion 122 and a uniform width portion 123.

  The widened portion 122 has a shape in which the side edge portion 121a widens downward from the upper end portion (vertex portion) (see FIG. 3B).

  In addition, the equal width portion 123 is formed below the wide width portion 122 so as to be continuous with the wide width portion 122. The equal width portion 123 is formed in a shape such that the side edge portions 121b on both sides are substantially the same distance (see FIG. 3B).

  In this equal width portion 123, the side edge portion 121 of the gusset container 100 (that is, the side edge portion 121a of the wide width portion 122 and the side edge portion 121b of the equal width portion 123) is sealed to the lower side edge portion 111b of the exterior film 110. In this state, a part of the lower portion of the equal width portion 123 is folded inward. The folded portion constitutes the bottom surface portion 124 of the gusset container 100 (details will be described later).

  The upper edge 112 of the gusset container 100 is sealed after filling the gusset container with contents (described later).

  In addition, when sealing the side edge 121 of the gusset film 120 to the lower side edge 111b of the exterior film 110, the exterior films 110 are directly sealed with each other at the central portion 111e of the lower edge, It is desirable to form, for example, a semicircular cut portion 125 (see FIGS. 4 and 5) substantially at the center of the directly sealed portion. Thereby, the gusset film 120 can be easily folded inward (details will be described later).

  The dimension of each part of the gusset container 100 is arbitrary. Moreover, although the formation material of the exterior film 110 and the gusset film 120 is also arbitrary, the material for retort pouches can be used, for example.

  Next, the manufacturing method of the gusset container 100 is demonstrated using FIG.4 and FIG.5.

  First, the bag body 130 for the gusset container 100 is produced as follows.

  First, the pair of gusset films 120 are sandwiched between the pair of exterior films 110 in a state where the pair of gusset films 120 are bent outward (that is, in a state where the fold line faces inward) (see FIGS. 4A and 4B).

  At this time, these gusset films 120 are arranged so that a part of the upper side and the lower side protrudes from the exterior film 110 in a state where they are inclined so as to approach each other toward the lower side. That is, the gusset film 120 is a part (side edge part 111c) where the above-mentioned upper side edge part 111a is formed in the side edge part 111 of the exterior film 110, the both end parts 111d and the center part 111e of the lower edge part, It arrange | positions so that these exterior films 110 may not be contact | connected.

  Next, the exterior film 110 and the gusset film 120 are sealed (see FIG. 4B).

  In this sealing step, a portion where the side edge portions 111 of the exterior film 110 overlap (that is, the side edge portion 111c) is sealed. Further, at the portion where the exterior film 110 and the gusset film 120 overlap, the outer edge portion 111f of the overlapping portion is sealed.

  Further, in the first embodiment, simultaneously with these seals, the exterior films 110 are also sealed at the central portion 111e of the lower edge portion.

  Then, the shape of the bag body 130 is adjusted by excising the part which protruded from the side edge parts 111c and 111f among the gusset film 120 and the exterior film 110 (refer FIG.4 (c)).

  As shown in FIG. 4C, in the first embodiment, a trapezoidal portion 131 in plan view is formed in the lower portion of the bag body 130. Thereby, the self-supporting stability when the gusset container 100 is completed can be improved.

  Moreover, in this Embodiment 1, the cut | notch part 125 is formed in the center part 111e of a lower edge part in connection with this excision. The shape of the cut portion 125 is arbitrary, and may be a triangle, a quadrangle, a line, or the like, but is preferably a semicircle. This is because by making the cut portion 125 semicircular, the cut portion 125 can hardly be torn by external stress after the gusset container 100 is completed.

  Thus, the bag body 130 for the gusset container 100 is completed.

  Subsequently, the bottom surface portion 124 is assembled as follows.

  First, the part 131 provided with the gusset film 120 of the bag body 130 is opened back and forth (see FIGS. 5A and 5B).

  Then, the opened portion 131 is folded inward at a predetermined position (see FIG. 5C). At this time, in this Embodiment 1, since the notch part 125 is provided, the center part 111e of the lower edge part of the exterior film 110 is easy to bend | fold, Therefore For this reason, the gusset film 120 can be easily folded inward. it can.

  As described above, the assembly of the bottom surface portion 124 of the bag body 130 is completed (see FIG. 5C).

  Subsequently, both side edges are sandwiched by grippers (not shown) with the opening (upper edge) 132 of the bag body 130 facing upward, the opening is widened by air injection, and then the contents are filled. .

  And the product (foodstuffs, pharmaceuticals, etc.) containing the gusset container 100 is completed by sealing the opening part 132 (refer FIG. 1).

  As described above, according to the gusset container 100 according to the first embodiment, the widened portion 122 is formed in the gusset film 120 on both sides, and the bottom portion 124 is formed by folding the lower portion of the gusset film 120 inward. Since it comprised, the gusset part (side surface 102) can fully be expanded to right and left, Therefore Independence when the gusset container 100 is mounted improves, and sufficient volumetric efficiency is securable.

  In addition, since the gusset container 100 is formed so that the upper part is flat and the lower part is a three-dimensional shape by providing a portion where the side edges 111 of the exterior film 110 are sealed (that is, the upper side edge 111a). The gusset container 100 can be filled with the contents while the upper side edge 111a is sandwiched between grippers and the like. As a result, according to the first embodiment, a normal standing pouch filling machine can be used, and the introduction cost is low.

  According to the first embodiment, the lower edge portions of the exterior film 110 are sealed with the central portion 111e of the bottom surface portion 124, and the lower edge portion of the exterior film 110 is sealed with the gusset film 120 except for the central portion 111e. As a result, it becomes easy to fold the gusset film 120 inward, and it becomes easy to obtain sufficiently stable self-supporting properties.

  According to the first embodiment, since the cut portion 125 is provided in the central portion 111e of the bottom surface portion 124, it becomes easier to fold the gusset film 120 inward.

  According to the first embodiment, by making the cut portion 125 substantially semicircular, the cut portion 125 can be made difficult to tear by external stress.

  According to the manufacturing method of the gusset container 100 according to the first embodiment, the pair of gusset films 120 are sandwiched between the pair of exterior films 110 in a state where the pair of gusset films 120 are bent and inclined, and then the upper side edge of the exterior film 110 111a is sealed, and the outer edge portion 111f of the portion where the pair of exterior films 110 and the pair of gusset films 120 overlap is sealed, so that the gusset container 100 before filling the contents is manufactured by only a simple process. can do.

Further, according to the first embodiment, since a normal standing pouch filling machine can be used, the introduction cost is low.
[Embodiment 2 of the Invention]
Next, a second embodiment of the present invention will be described with reference to FIGS. 6-8, the same code | symbol as FIGS. 1-7 shows the structure same as FIGS. 1-8, respectively.

  As can be seen from FIGS. 6 and 7, the gusset container 200 of the second embodiment is different from the first embodiment in the shape of the side surface and the bottom surface.

  In the gusset container 200 of the second embodiment, the side surface 102 formed by a pair of gusset films 120 includes only the widened portion 211 and does not include the equal width portion. That is, in the second embodiment, the widened portion 211 has a shape that reaches the bottom portion 220 of the gusset container 200.

  Further, the gusset container 200 has a blade portion 221 having a substantially triangular plan view extending on the outer side in the front and back direction at the bottom surface portion 220 thereof.

  Next, a method for manufacturing the gusset container 100 will be described.

  First, as in the case of Embodiment 1 (see FIG. 4A), the pair of gusset films 120 are sandwiched between the pair of exterior films 110 in a state of being folded outward.

  At this time, as in the first embodiment, these gusset films 120 are arranged such that a part of the upper side or the lower side protrudes from the exterior film 110 in a state where the gusset films 120 are inclined so as to approach each other downward. The

  However, the manufacturing process of the second embodiment is different from the first embodiment in that the gusset film 120 is disposed so as to be in contact with the exterior film 110 over the entire lower edge portion 215 except for the central portion 214 (FIG. 8). (See (a)).

  Next, the exterior film 110 and the gusset film 120 are sealed. Also in the second embodiment, as in the first embodiment, the portion 212 where the side edges of the exterior film 110 overlap each other is sealed by heat sealing or the like. Moreover, in the part where the exterior film 110 and the gusset film 120 overlap, the outer edge part 213 of this overlapping part is sealed (refer Fig.8 (a)).

  In addition, in the same manner as in the first embodiment, the exterior films 110 are sealed at the central portion 214 of the lower edge portion simultaneously with these seals.

  Then, the shape of the bag body 230 is adjusted by cutting out the part which protruded from the side edge part 212 among the gusset film 120 and the exterior film 110 (refer FIG.8 (b)).

  At this time, in the same manner as in the first embodiment, the cut portion 125 is formed in the central portion 214 of the lower edge portion in conjunction with the resection.

  Next, as in the first embodiment (see FIG. 5), the bottom portion 220 of the bag body 230 is assembled. In the second embodiment, when the gusset film 120 is sandwiched between the exterior films 110, the gusset films 120 are disposed so as to be in contact with the exterior film 110 in the entire region of the lower edge portion 215 excluding the central portion 214 (FIG. 8). (See (a)), when assembling the bottom surface portion 220, the lower corner portion 216 of the bag body 230 becomes the blade portion 221 as it is (see FIG. 8B).

  Thereafter, in the same manner as in the first embodiment, the bag 230 is filled with the contents, whereby the product containing the gusset container 200 is completed (see FIG. 1).

  According to the second embodiment, the same effect as in the first embodiment can be obtained.

  In addition, according to the second embodiment, since the blade portion 221 extending outward in the front-back direction of the bottom surface portion 220 is provided, the self-supporting stability of the gusset container 200 is more improved than that of the gusset container 100 according to the first embodiment. It can be further increased.

  In addition, although Embodiment 1 and 2 demonstrated above demonstrated taking the case of applying to the container of the type opened by cutting off an upper part as an example, it is also possible to apply to the container with a spout.

100, 200 Gusset container 110 Exterior film 111 Side edge 112 Upper edge 120 Gusset film 122, 211 Widened part 123 Equal width part 124 Bottom part 125 Cut part 130, 230 Bag body 220 Bottom part 221 Blade part

Claims (8)

A gusset container having a pair of exterior films forming front and back surfaces and a pair of gusset films forming part of both side surface portions,
The pair of exterior films are sealed at the upper side edges extending from the upper ends of the pair of exterior films to the side edges of the exterior films and at the lower side edges below the upper side edges. The side edge of the exterior film and the side edge of the gusset film are sealed,
The pair of gusset films has a widened portion that widens downward from the upper end thereof,
The bottom part is formed by folding the pair of gusset films inward at a predetermined position.
Gusset container characterized by that.   The lower edges of the exterior film are sealed near the center of the lower edge of the exterior film, and the lower edge of the exterior film is sealed with the pair of gusset films except near the center. The gusset container according to claim 1, wherein the gusset container is provided.   A cut portion for facilitating folding of the pair of gusset films to the inside is provided at the approximate center of the bottom portion of the portion where the lower edges of the exterior film are directly sealed. The gusset container according to claim 2.   The gusset container according to claim 3, wherein the cut portion is substantially semicircular.   5. The blade according to claim 2, further comprising a blade portion extending outward from the bottom surface portion in the front and back direction by a portion where the lower edge portion of the exterior film and the pair of gusset films are sealed. Gusset container as described. A method for manufacturing a gusseted container according to any one of claims 1 to 5,
A first step of bending the pair of gusset films and sandwiching the pair of gusset films between the pair of exterior films in a state where the pair of gusset films are inclined so as to approach each other toward the lower side,
A second step of sealing the side edge portions at the top of the pair of exterior films and sealing an outer edge portion of a portion where the pair of exterior films and the pair of gusset films overlap;
A third step of cutting out the portion of the pair of gusset films that protrudes outward from the outer edges of the pair of exterior films;
The manufacturing method of a gusset container characterized by including this. A fourth step of folding the pair of gusset films inward at a predetermined position;
A fifth step of filling the contents formed in the housing formed of the exterior film and the gusset film;
The gusset container manufacturing method according to claim 6, further comprising:   The method for manufacturing a gusset container according to claim 6 or 7, further comprising a step of cutting out a portion of the pair of exterior films that protrudes outward from an outer edge of the pair of gusset films.

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