JP2022040952A - Package - Google Patents

Abstract

To prevent wrinkle generation or large deformation of a box body, even in a state where the box body housing a soft packaging container in which a fluid is filled is stood.SOLUTION: A package comprises a box body 10 and a soft packaging container 20. The box body 10 is in a flat shape. The soft packaging container 20 is housed in the box body 10, and has continuous internal spaces. The soft packaging container 20 includes: a front side sheet 100 having a first face 101; a rear side sheet 110 having a second face 111 facing the first face 101; and an intermediate sheet 130 extended in the shape of a flat surface and sandwiched between the front side sheet 100 and the rear side sheet 110. The intermediate sheet 130 is partially welded with the front side sheet 100, and partially welded with the rear side sheet 110. In the state that the soft packaging container 20 expands, the intermediate sheet 130 specifies a maximum interval L2 between the front side sheet 100 and the rear side sheet 110.SELECTED DRAWING: Figure 1

Description

The present invention relates to a package.

Japanese Patent Application Laid-Open No. 2000-272670 (Patent Document 1) discloses a structure of an airtight bag body that maintains a flat shape. In the airtight bag body that maintains the flat shape described in Patent Document 1, a separate piece is interposed between the facing bag walls, and both sides of the separate piece are fused to the inner surface of the bag wall to fuse both bags. A partition wall that restrains the wall is formed.

Japanese Unexamined Patent Publication No. 2000-272670

In a state where the box body containing the airtight bag body filled with the fluid is erected, the lower part of the airtight bag body may be greatly deformed from the inside by the fluid gathering and expanding.

The present invention has been made to solve the above-mentioned problems, and even when the box body containing the flexible packaging material container filled with the fluid is erected, the box body may be wrinkled or the box may be wrinkled. It is an object of the present invention to provide a package capable of suppressing a large deformation of the body.

The packaging body based on the present invention includes a box body and a flexible packaging material container. The box body has a flat shape. The flexible packaging material container is housed in a box and has a continuous internal space. The flexible packaging material container is an intermediate between a front side sheet having a first surface, a back side sheet having a second surface facing the first surface, and a flat surface extending between the front side sheet and the back side sheet. Including the sheet. The intermediate sheet is partially welded to the front side sheet and partially welded to the back side sheet. In the inflated state of the flexible packaging material container, the intermediate sheet defines the maximum distance between the front side sheet and the back side sheet.

In one embodiment of the invention, the flexible packaging material container further comprises a spout that is partially disposed between the ends of each of the front and back sheets and is joined to each of the front and back sheets. Be prepared. The flexible packaging material container is fixed to the box body on the side opposite to the side where the spout is located.

In one embodiment of the invention, the intermediate sheet is alternately welded to each of the first and second surfaces. In the inflated state of the flexible packaging material container, the intermediate sheet is located in a zigzag shape between the front side sheet and the back side sheet.

In one embodiment of the present invention, the portions of the intermediate sheet that are alternately welded to each of the first surface and the second surface extend in the extending direction. Both ends of the intermediate sheet in the extending direction are welded to each of the front side sheet and the back side sheet, and are welded to each of the first surface and the second surface alternately. There is a gap in the current direction.

According to the present invention, it is possible to prevent the box body from being wrinkled or significantly deformed even when the box body containing the flexible packaging material container filled with the fluid is erected.

It is a perspective view which shows the structure of the package which concerns on one Embodiment of this invention. It is a perspective view which shows the structure of the box body provided in the package body which concerns on one Embodiment of this invention. It is a front view which shows the structure of the flexible packaging material container provided in the package which concerns on one Embodiment of this invention. It is an exploded perspective view which shows the structure of the flexible packaging material container provided in the package which concerns on one Embodiment of this invention. FIG. 3 is a cross-sectional view of the flexible packaging material container of FIG. 3 as viewed from the direction of the arrow along the VV line. FIG. 3 is a cross-sectional view of the flexible packaging material container of FIG. 3 as viewed from the direction of the arrow along the VI-VI line. It is a flowchart which shows the manufacturing method of the flexible packaging material container provided in the package which concerns on one Embodiment of this invention. It is a front view which shows the manufacturing method of the flexible packaging material container provided in the package which concerns on one Embodiment of this invention. It is a top view which shows the manufacturing method of the flexible packaging material container provided in the package which concerns on one Embodiment of this invention. It is a perspective view which shows the state which the intermediate sheet is sandwiched in the plate-shaped member in the manufacturing method of the flexible packaging material container provided in the package which concerns on one Embodiment of this invention. 9 is a cross-sectional view of the state before welding the first surface and the intermediate sheet in the method for manufacturing a flexible packaging material container of FIG. 9 as viewed from the direction of the arrow along the XI-XI line. 9 is a cross-sectional view of the state before welding the second surface and the intermediate sheet in the method for manufacturing a flexible packaging material container of FIG. 9 as viewed from the direction of the arrow along the line XII-XII. FIG. 11 is a cross-sectional view showing a modified example of the state before welding the first surface and the intermediate sheet in the method for manufacturing a flexible packaging material container of FIG. 11. It is a front view which shows the flexible packaging material container provided in the package which concerns on 1st modification of 1st Embodiment of this invention. It is a front view which shows the flexible packaging material container provided in the package which concerns on the 2nd modification of 1st Embodiment of this invention.

Hereinafter, the package according to the embodiment of the present invention will be described with reference to the drawings. In the following description of the embodiment, the same or corresponding parts in the drawings are designated by the same reference numerals, and the description thereof will not be repeated. In the drawings, the width direction of the package is the X-axis direction, the depth direction of the package is the Y-axis direction, and the height direction of the package is the Z-axis direction.

FIG. 1 is a perspective view showing a configuration of a package according to an embodiment of the present invention. FIG. 2 is a perspective view showing the configuration of a box body included in the package body according to the embodiment of the present invention. FIG. 3 is a front view showing the configuration of a flexible packaging material container included in the packaging body according to the embodiment of the present invention. FIG. 4 is an exploded perspective view showing a configuration of a flexible packaging material container included in a package according to an embodiment of the present invention. Note that FIG. 4 shows the state after the constituent members of the flexible packaging material container 20 are welded in an exploded manner.

As shown in FIGS. 1 to 4, the package 1 according to the embodiment of the present invention includes a box body 10 and a flexible packaging material container 20. In the present embodiment, the box body 10 and the soft packaging material container 20 having a substantially rectangular shape when viewed from the front will be described as an example, but from the front of each of the box body 10 and the soft packaging material container 20. The shape seen is not limited to a substantially rectangular shape, and may be a polygon such as an octagon.

As shown in FIGS. 1 and 2, the box body 10 includes a main surface portion 11, a spout insertion portion 14, and a fixing portion 140. The box body 10 has a flat shape whose dimensions in the X-axis direction are smaller than those in the Y-axis direction and the Z-axis direction. The material of the box body 10 is, for example, cardboard. The material of the box body 10 is not limited to cardboard, but may be a resin material or the like.

The dimensions of the box 10 are, for example, 25 mm or more and 30 mm or less in the X-axis direction, 130 mm or more and 220 mm or less in the Y-axis direction, and 200 mm or more and 300 mm or less in the Z-axis direction. In the case of these dimensions, it is easy to put it in the post of the house at the time of delivery to each house, and the independence in the Z-axis direction is also preferable. The dimensions of the box 10 are not limited to these, and may be, for example, 25 mm or more and 60 mm or less in the X-axis direction, 120 mm or more and 250 mm or less in the Y-axis direction, and 200 mm or more and 400 mm or less in the Z-axis direction. good.

The main surface portion 11 is composed of a first main surface portion 11A and a second main surface portion 11B facing each other. The pair of main surface portions 11 are located so as to sandwich the soft packaging material container 20 in the X-axis direction with an inner width L1.

The first main surface portion 11A is provided with an opening portion 12 and an insertion portion 13. After the flexible packaging material container 20 is inserted into the box body 10 with the insertion portion 13 not inserted into the opening portion 12, the insertion portion 13 is inserted into the opening portion 12 to insert the insertion portion 13 into the inside of the box body 10. The flexible packaging material container 20 is housed in the container.

As shown in FIG. 2, the spout insertion portion 14 is provided on one side of the box body 10 in the Y-axis direction on one side in the Z-axis direction. A plurality of insertion assisting notches 14c are provided around the spout insertion portion 14 in the radial direction.

The fixing portion 140 is arranged on the inner surface of the box body 10 on the other side in the Y-axis direction on the other side in the Z-axis direction. The fixing portion 140 may be located on the other side of the center of the box body 10 in the Y-axis direction. The flexible packaging material container 20 is fixed to the box body 10 at the fixing portion 140. The method of fixing the box body 10 and the flexible packaging material container 20 is preferably fixed with a hot melt adhesive. The method of fixing the box body 10 and the flexible packaging material container 20 is not limited to fixing with a hot melt adhesive. For example, the flexible packaging material container 20 may be fixed to the box body 10 by forming a through hole in the flexible packaging material container 20, providing a protrusion inside the box body 10, and engaging the protrusion with the through hole.

As shown in FIGS. 3 and 4, the flexible packaging material container 20 includes a front side sheet 100, a back side sheet 110, a spout 120, and an intermediate sheet 130. As shown in FIG. 1, in the flexible packaging material container 20, a portion other than the tip end side of the spout 120 is housed in the box body 10.

Like the box body 10, the flexible packaging material container 20 has a flat shape in which the dimensions in the X-axis direction are smaller than the dimensions in the Y-axis direction and the Z-axis direction. The flexible packaging material container 20 is filled with a fluid (not shown).

As shown in FIGS. 3 and 4, the front side sheet 100 is a sheet extending on a YZ plane. The front side sheet 100 is arranged on one side of the flexible packaging material container 20 in the X-axis direction. The front side sheet 100 has a substantially rectangular shape, and one corner portion in the Y-axis direction and one side in the Z-axis direction is cut off. The front side sheet 100 has a first surface 101 on the other side in the X-axis direction.

The back sheet 110 is a sheet extending on a YZ plane. The back sheet 110 is arranged on the other side of the flexible packaging material container 20 in the X-axis direction. The back side sheet 110 has a substantially rectangular shape so as to correspond to the front side sheet 100, and one corner portion in the Y-axis direction and one side in the Z-axis direction is cut off. The back side sheet 110 has a second surface 111 facing the first surface 101 on one side in the X-axis direction.

Each of the front side sheet 100 and the back side sheet 110 is preferably composed of a multi-layer sheet including a base film layer and a sealant layer. In each of the front side sheet 100 and the back side sheet 110 in the present embodiment, a sealant layer is provided on the outermost surfaces of at least the first surface 101 and the second surface 111. When high gas barrier property or light-shielding property is required, it is preferable to provide a gas barrier layer or light-shielding layer corresponding to the required characteristics between the base film layer and the sealant layer.

Specific examples of the base film layer include polyester such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN) or polybutylene terephthalate (PBT), polyolefin such as polyethylene (PE) or polypropylene (PP), or nylon. Examples thereof include single-layer or multi-layer stretched or unstretched films composed of polyamide such as -6 or nylon-66. In particular, a biaxially stretched PET film or a biaxially stretched polyamide film is preferable as the base film layer.

Specific examples of the sealant layer include low density polyethylene (LDPE), linear low density polyethylene (LLDPE), ethylene-propylene copolymer (EP), unstretched polypropylene (CPP), ethylene-olefin copolymer, and ethylene. Examples include single-layer or multi-layer films or extruded resin layers composed of -acrylic acid copolymer (EAA), polyethylene-methacrylic acid copolymer (EMAA) and ethylene-vinyl acetate copolymer (EVA). Be done.

Specific examples of the gas barrier layer include a metal thin film such as aluminum, a resin film such as vinylidene chloride (PVDC) or ethylene-vinyl alcohol copolymer (EVOH), or an inorganic oxide such as aluminum, aluminum oxide or silica. Synthetic resin film made of aluminum can be mentioned.

The base film layer, the sealant layer and the gas barrier layer described above are laminated by, for example, dry lamination with an adhesive or heat lamination in which a heat-adhesive layer is sandwiched between each layer and bonded by heat.

In addition, each of the front side sheet 100 and the back side sheet 110 is not limited to the above-mentioned layer structure, and may include a colored film or a print layer for displaying a trade name, a design, and the like.

The front side sheet 100 and the back side sheet 110 are welded to each other at the first welded portions 141 located at both ends in the Z-axis direction. Specifically, the first surface 101 and the second surface 111 are welded to each other at the first welded portion 141.

As shown in FIGS. 3 and 4, the spout 120 includes a tubular portion 121 and a lid portion 122. By attaching the lid portion 122 to the cylinder portion 121 in a detachable manner, the fluid in the flexible packaging material container 20 can be poured out from the spout 120 without removing the flexible packaging material container 20 from the box body 10.

The spout 120 is provided on one side of the box body 10 in the Z-axis direction on one side in the Y-axis direction. As shown in FIGS. 1 to 3, the tubular portion 121 of the spout 120 has a flange portion having a diameter larger than that of the spout insertion portion 14. When the spout 120 is inserted from the inside of the box body 10, the plurality of insertion auxiliary cut portions 14c are curved toward the outside of the box body 10, so that the diameter of the spout insertion portion 14 is expanded. As a result, the lid portion 122 side of the spout 120 can be inserted into the spout insertion portion 14.

As shown in FIGS. 1 to 4, the flexible packaging material container 20 is fixed to the box body 10 by the fixing portion 140 on the side opposite to the side where the spout 120 is located. This makes it possible to prevent the flexible packaging material container 20 from moving inside the box body 10 when the package body 1 is tilted to eject the fluid from the spout 120.

A part of the spout 120 is arranged between the ends of the front side sheet 100 and the back side sheet 110, and is joined to each of the front side sheet 100 and the back side sheet 110. Specifically, the tubular portion 121 is welded to the front side sheet 100 and the back side sheet 110 in the spout welding portion 145. The tubular portion 121 is formed of, for example, a polyethylene-based resin and is welded by heat sealing. The spout 120 may be arranged not only at the corner portion of the flexible packaging material container 20 but also at the center of the end face portion on one side in the Z-axis direction, for example. The position of the spout insertion portion 14 is appropriately changed according to the position of the spout 120.

The intermediate sheet 130 is a rectangular sheet extending in a plane. The intermediate sheet 130 is sandwiched between the front side sheet 100 and the back side sheet 110. The intermediate sheet 130 has substantially the same dimensions as the front side sheet 100 and the back side sheet 110 in the Y-axis direction, and has dimensions shorter than the front side sheet 100 and the back side sheet 110 on one side and the other side in the Z-axis direction. .. In FIG. 3, both ends of the intermediate sheet 130 in the Z-axis direction are shown by dotted lines.

The intermediate sheet 130 may be a sealant layer in which both sides of the intermediate sheet 130 can be welded to each of the front side sheet 100 and the back side sheet 110, and may be composed of a single-layer film of the sealant layer. The thickness of the intermediate sheet 130 is preferably thinner than each of the front side sheet 100 and the back side sheet 110 because it is difficult to directly receive an impact from the outside.

The intermediate sheet 130 is partially welded to the front side sheet 100 and partially welded to the back side sheet 110. Specifically, both ends of the intermediate sheet 130 in the Y-axis direction are welded to each of the front side sheet 100 and the back side sheet 110 at the second welding portions 142 located at both ends in the Y-axis direction. The first surface 101 and one surface of the intermediate sheet 130 in the X-axis direction are welded to each other, and the second surface 111 and the other surface of the intermediate sheet 130 in the X-axis direction are welded to each other. As a result, in the second welded portion 142, the three layers of the front side sheet 100, the back side sheet 110 and the intermediate sheet 130 are integrally laminated.

The intermediate sheet 130 is alternately welded to each of the first surface 101 and the second surface 111. In the intermediate sheet 130, the portions alternately welded to each of the first surface 101 and the second surface 111 extend in the extending direction (Y-axis direction). Specifically, the first surface 101 and the intermediate sheet 130 are welded at the first surface side welding portion 143. The second surface 111 and the intermediate sheet 130 are welded at the second surface side welding portion 144. Each of the first surface side welding portion 143 and the second surface side welding portion 144 is alternately arranged with a gap in the Z-axis direction and extends in the Y-axis direction.

As shown in FIG. 3, a gap is provided in the extending direction (Y-axis direction) between each of the first surface 101 and the second surface 111 and the portion to be welded alternately. Specifically, each of the end portion 143e of the first surface side welding portion 143 and the end portion 144e of the second surface side welding portion 144 in the Y-axis direction is provided with a gap between the end portion 144e and the second welding portion 142. ing.

The intermediate sheet 130 has a plurality of holes 131h. In the present embodiment, the plurality of holes 131h have a round hole shape. The plurality of hole portions 131h are arranged between the first surface side welding portion 143 and the second surface side welding portion 144. The shape of the plurality of holes 131h is not limited to a round shape, and may be a polygonal shape or an elliptical shape.

Each of the front side sheet 100, the back side sheet 110, and the intermediate sheet 130 in the present embodiment is fixed by a heat seal, but the heat seal is not limited to thermocompression bonding by a heat seal bar, and is an ultrasonic seal or an impulse seal. In addition to the heat seal, bonding with an adhesive may be used.

FIG. 5 is a cross-sectional view of the flexible packaging material container of FIG. 3 as viewed from the direction of the arrow along the VV line. FIG. 6 is a cross-sectional view of the flexible packaging material container of FIG. 3 as viewed from the direction of the arrow along the VI-VI line. In addition, in FIG. 5 and FIG. 6, in order to facilitate understanding of the present invention, only the end face of each cross section in the inflated state of the flexible packaging material container 20 is shown.

As shown in FIGS. 5 and 6, the flexible packaging material container 20 has a continuous internal space. Specifically, the internal space of the flexible packaging material container 20 is composed of a first surface side space 150, a second surface side space 151, and an end side space 152. As shown in FIGS. 3 and 5, the first surface side space 150 and the second surface side space 151 have a Z axis between the first surface side welding portion 143 and the second surface side welding portion 144 through the hole portion 131h. It is continuous in the direction.

As shown in FIGS. 3 and 6, the front side sheet 100, the back side sheet 110 and the intermediate sheet 130 are not welded between each of the end portions 143e and the end portion 144e and the second welded portion 142. As a result, the end side space 152 is continuous in the Z-axis direction. Further, the end side space 152 is continuous with each of the first surface side space 150 and the second surface side space 151.

As described above, the first surface side space 150, the second surface side space 151, and the end side space 152 are continuous, so that the first surface side welding portion 143 and the second surface side welding portion 144 are provided. Even in this state, the fluid in the soft packaging material container 20 can flow smoothly inside the soft packaging material container 20.

As shown in FIG. 5, in the intermediate sheet 130, the intermediate sheet 130 is positioned in a zigzag shape between the front side sheet 100 and the back side sheet 110 in a state where the flexible packaging material container 20 is inflated. The intermediate sheet 130 is alternately welded to the front side sheet 100 and the back side sheet 110 at regular intervals.

Specifically, in the intermediate sheet 130, the distance L3, the distance L4, and the distance L5 between the first surface side welding portion 143 and the second surface side welding portion 144 adjacent to each other have the same dimensions. The distance L6 between the first surface side welded portions 143 in the front side sheet 100 has the same dimensions as the sum of the distances L3 and the distance L4. The distance L7 between the second surface side welded portions 144 in the back side sheet 110 has the same dimension as the sum of the distance L4 and the distance L5. That is, the distance L6 between the adjacent first surface side welded portions 143 on the front side sheet 100 and the distance L7 between the adjacent second surface side welded portions 144 on the back side sheet 110 are the same dimensions. Due to this dimensional relationship, the three layers of the front side sheet 100, the back side sheet 110, and the intermediate sheet 130 can be laminated and arranged in a plane in a state before the flexible packaging material container 20 is inflated.

By shortening the distance L6 and the distance L7, the expansion allowances of the front side sheet 100 and the back side sheet 110 in the X-axis direction when the flexible packaging material container 20 is inflated are reduced, so that the front side sheet 100 and the back side in the X-axis direction are reduced. The maximum distance L2 from the sheet 110 becomes shorter. On the contrary, by increasing the distance L6 and the distance L7, the expansion capacity of the front side sheet 100 and the back side sheet 110 in the X-axis direction when the flexible packaging material container 20 is inflated increases, so that the front side sheet in the X-axis direction is increased. The maximum distance L2 between 100 and the back sheet 110 becomes long.

By varying the distance L6 between the first surface side welded portions 143 and the distance L7 between the second surface side welded portions 144 in this way, the maximum distance L2 between the front side sheet 100 and the back side sheet 110 in the X-axis direction can be obtained. Can be adjusted. Specifically, in the first surface side welding portion 143 and the second surface side welding portion 144, the welding portion located first from one end in the Z axis direction of the intermediate sheet 130 and the Z axis of the intermediate sheet 130. The maximum spacing L2 can be adjusted by the remaining first surface side welded portion 143 and second surface side welded portion 144 excluding the welded portion located first from the other end in the direction. Since both ends of the flexible packaging material container 20 in the Z-axis direction are located on the peripheral edge of the box body 10 having high deformation resistance, swelling is suppressed.

The intermediate sheet 130 defines a maximum distance L2 between the front side sheet 100 and the back side sheet 110 in a state where the flexible packaging material container 20 is inflated. In one embodiment of the present invention, the intermediate sheet 130 defines the maximum distance L2 to be twice or less the inner width L1 of the box body 10 in the X-axis direction in which the front side sheet 100 and the back side sheet 110 are lined up. .. The maximum interval L2 is preferably 1.5 times or less, more preferably 1.2 times or less, and particularly preferably 1.0 times or more and 1.2 times or less the inner width L1. By defining the maximum interval L2 with respect to the inner width L1 in this way, even if the box body 10 swells a little due to the swelling of the flexible packaging material container 20, there is no discomfort in the appearance of the box body 10, and further. Since the bulge can be easily pushed back without damaging the box body 10, there is no problem in use.

When the box body 10 is slightly inflated due to the swelling of the flexible packaging material container 20, for example, in the box body 10 having a dimension of 25 mm or more and 30 mm or less in the X-axis direction, the X-axis direction of the central portion of the box body 10 on the YZ plane. The size of the above may be 1.4 times or less before swelling, more preferably 1.3 times or less, still more preferably 1.2 times or less. The dimension of the central portion of the box body 10 on the YZ plane in the X-axis direction is adjusted by the maximum distance L2 of the flexible packaging material container 20.

The dimensions of the intermediate sheet 130 and the positions of the first surface side welded portion 143 and the second surface side welded portion 144 in the Z-axis direction are the maximum intervals even when the top and bottom of the flexible packaging material container 20 are reversed. It is preferable that L2 is set so as to be twice or less the inner width L1 of the box body 10.

Hereinafter, a method for manufacturing the package 1 according to the embodiment of the present invention will be described. FIG. 7 is a flowchart showing a method of manufacturing a flexible packaging material container included in a package according to an embodiment of the present invention. FIG. 8 is a front view showing a method of manufacturing a flexible packaging material container included in a package according to an embodiment of the present invention. FIG. 9 is a top view showing a method for manufacturing a flexible packaging material container included in a package according to an embodiment of the present invention. In FIG. 8, the upper side of the front side sheet 100 is the upper part, and the lower side of the back side sheet 110 is the lower part. Further, in FIGS. 8 and 9, the direction of the arrow in which the process progresses is defined as the traveling direction. In FIG. 9, manufacturing equipment other than the plate-shaped member is not shown.

As shown in FIG. 7, regarding the method for manufacturing a package according to an embodiment of the present invention, first, a hole 131h is provided in the intermediate sheet 130 (step S1). Specifically, as shown in FIGS. 8 and 9, the intermediate sheet 130 has a punch 50 arranged at the upper portion and a die 51 arranged at the lower portion. The punch 50 penetrates the intermediate sheet 130 and is inserted into the hole of the die 51, so that the hole 131h is formed in the intermediate sheet 130. The piece of the intermediate sheet 130 when the hole 131h is formed passes through the inside of the die 51 and is discharged downward.

Next, as shown in FIG. 7, the front side sheet 100, the intermediate sheet 130, and the back side sheet 110 are overlapped and conveyed (step S2). Specifically, as shown in FIGS. 8 and 9, the front side sheet 100, the intermediate sheet 130, and the back side sheet 110 are stacked and conveyed in this order from above. The intermediate sheet 130 is arranged substantially in the center of the front side sheet 100 and the back side sheet 110 when viewed from above.

Next, as shown in FIG. 7, the intermediate sheet 130 is sandwiched between the plate-shaped members (step S3). FIG. 10 is a perspective view showing a state in which an intermediate sheet is sandwiched between plate-shaped members in the method for manufacturing a flexible packaging material container included in a package according to an embodiment of the present invention. As shown in FIGS. 8 to 10, the plate-shaped member is composed of a first plate-shaped member 60 and a second plate-shaped member 61.

Each of the first plate-shaped member 60 and the second plate-shaped member 61 extends outward from the front side sheet 100 and the back side sheet 110 in the horizontal direction orthogonal to the traveling direction, and the first support portion 60s and the second support portion. It has 61s. The first support portion 60s and the second support portion 61s are fixed to a base (not shown).

The first plate-shaped member 60 has a plurality of first tip portions 60t extending in the traveling direction from the first support portion 60s. The second plate-shaped member 61 has a plurality of second tip portions 61t extending in the traveling direction from the second support portion 61s. The first tip portion 60t and the second tip portion 61t are arranged side by side alternately in a horizontal direction orthogonal to the traveling direction.

The intermediate sheet 130 is arranged above the first tip portion 60t and below the second tip portion 61t. That is, the intermediate sheet 130 is arranged in a zigzag shape in the vertical direction with respect to the first tip portion 60t and the second tip portion 61t in the horizontal direction orthogonal to the traveling direction. The front side sheet 100 and the back side sheet 110 are arranged so as to sandwich the intermediate sheet 130, the first tip portion 60t, and the second tip portion 61t between each other from the vertical direction.

Next, as shown in FIG. 7, the first surface 101 and the intermediate sheet 130 are joined (step S4). FIG. 11 is a cross-sectional view of the state before welding the first surface and the intermediate sheet in the method for manufacturing the flexible packaging material container of FIG. 9 as viewed from the direction of the arrow along the XI-XI line. As shown in FIGS. 8 and 11, the first sealing machine 70 is arranged on the upper part of the front side sheet 100, and the first cradle 71 is arranged on the lower part of the back side sheet 110. The first sealing machine 70 has a contact portion 70c that comes into contact with the front side sheet 100.

As shown in FIGS. 9 and 11, in step S4, the heated contact portion 70c moves downward, and the contact portion 70c and the first cradle 71 make the front side sheet 100, the back side sheet 110, and the intermediate sheet 130. , The first plate-shaped member 60 and the second plate-shaped member 61 are sandwiched, and the first surface 101 and the intermediate sheet 130 are heat-welded to form the first surface side welded portion 143. At this time, since the first tip portion 60t is interposed between the back side sheet 110 and the intermediate sheet 130, the back side sheet 110 is not welded to the intermediate sheet 130.

Next, as shown in FIG. 7, the second surface 111 and the intermediate sheet 130 are joined (step S5). FIG. 12 is a cross-sectional view of the state before welding the second surface and the intermediate sheet in the method for manufacturing the flexible packaging material container of FIG. 9 as viewed from the direction of the arrow along the line XII-XII. As shown in FIGS. 8 and 12, the second sealing machine 72 is arranged at the lower part of the back side sheet 110, and the second pedestal 73 is arranged at the upper part of the front side sheet 100. The second sealing machine 72 has a contact portion 72c that comes into contact with the back side sheet 110.

As shown in FIGS. 9 and 12, in step S5, the heated contact portion 72c moves upward, and the front side sheet 100, the back side sheet 110, and the intermediate sheet 130 are formed by the contact portion 72c and the second cradle 73. , The first plate-shaped member 60 and the second plate-shaped member 61 are sandwiched, and the second surface 111 and the intermediate sheet 130 are heat-welded to form the second surface side welded portion 144. At this time, since the second tip portion 61t is interposed between the front side sheet 100 and the intermediate sheet 130, the front side sheet 100 is not welded to the intermediate sheet 130. The intermediate sheet 130 is in a state of not being sandwiched between the first plate-shaped member 60 and the second plate-shaped member 61 by advancing in the traveling direction after the second surface side welding portion 144 is formed.

FIG. 13 is a cross-sectional view showing a modified example of the state before the first surface and the intermediate sheet are welded in the method for manufacturing the flexible packaging material container of FIG. As shown in FIG. 13, the first tip portion 60t and the second tip portion 61t are arranged in a zigzag shape in the horizontal direction orthogonal to the traveling direction with respect to the intermediate sheet 130. By arranging the first tip portion 60t and the second tip portion 61t in this way, the intermediate sheet 130 can be inserted between the first plate-shaped member 60 and the second plate-shaped member 61 while being held flat. can.

Next, as shown in FIG. 7, the front side sheet 100 and the back side sheet 110 are joined (step S6). Specifically, as shown in FIG. 8, a pair of third sealing machines 80 and a pair of fourth sealing machines 81 are arranged at the upper part of the front side sheet 100 and the lower part of the back side sheet 110. The pair of third sealing machines 80 has a contact portion 80c that comes into contact with the front side sheet 100 and the back side sheet 110. The pair of fourth sealing machines 81 has a contact portion 81c that comes into contact with the front side sheet 100 and the back side sheet 110.

As shown in FIG. 9, a pair of third sealing machines 80 sandwiches the front side sheet 100, the back side sheet 110, and the intermediate sheet 130 between the heated contact portions 80c, so that they are heated and pressed in a direction orthogonal to the traveling direction. An extending first welded portion 141 and a second welded portion 142 are formed. After the front side sheet 100, the back side sheet 110 and the intermediate sheet 130 are conveyed in the traveling direction, a pair of fourth sealing machines 81 sandwich the front side sheet 100 and the back side sheet 110 with the heated contact portion 81c to heat and press the front side sheet 100 and the back side sheet 110. The first welded portion 141 extending in parallel with the traveling direction is formed.

Next, as shown in FIG. 7, the front side sheet 100, the intermediate sheet 130, and the back side sheet 110 are cut (step S7). Specifically, as shown in FIG. 8, the cutting machine 90 is arranged on the upper part of the front side sheet 100, and the third cradle 91 is arranged on the lower part of the back side sheet 110. The cutting machine 90 has a blade portion 90b.

As shown in FIGS. 8 and 9, the blade portion 90b moves downward and cuts the front side sheet 100, the intermediate sheet 130, and the back side sheet 110 by the blade portion 90b.

Although the spout welding step and the fluid filling step are not shown in FIGS. 7 to 9, in the case of manufacturing including these steps, for example, these steps are performed after the cutting step (step S7). It will be provided. When the fluid is sealed from one end of the flexible packaging material container 20, a part of the upper side of the first welded portion 141 is in an unwelded state, and after the fluid is filled, the unwelded portion is welded and sealed. ..

In the package according to the embodiment of the present invention, the intermediate sheet 130 partially welded to the front side sheet 100 and the back side sheet 110 is provided, and the front side sheet 100 and the back side are provided in a state where the flexible packaging material container 20 is inflated. By defining the maximum distance L2 from the sheet 110, even when the box body 10 containing the flexible packaging material container 20 filled with the fluid is erected, the box body is greatly deformed by the expansion of the soft packaging material container 20. Can be suppressed. The maximum interval L2 is preferably 2 times or less, more preferably 1.5 times or less, further preferably 1.2 times or less, and particularly preferably 1.0 times or more and 1.2 times or less of the inner width L1. Further, in the intermediate sheet 130, the maximum interval L2 may be defined as the inner width L1 or less of the box body 10.

In the package according to the embodiment of the present invention, the flexible packaging material container 20 is fixed to the box body 10 by the fixing portion 140 on the side opposite to the side where the spout 120 provided in the flexible packaging material container 20 is located. As a result, the soft packaging material container 20 is suppressed from moving in the box body 10, so that the box body 10 containing the soft packaging material container 20 can be tilted and the fluid can be stably poured out. .. Further, by fixing both ends of the flexible packaging material container 20 by the fixing portion 140 on the opposite side to the spout 120, it is possible to suppress the expansion of the central portion of the flexible packaging material container 20.

In the package according to the embodiment of the present invention, the intermediate sheet 130 is welded alternately to each of the first surface 101 and the second surface 111, and the intermediate sheet 130 is in a state where the flexible packaging material container 20 is inflated. By locating in a zigzag shape between the front side sheet 100 and the back side sheet 110, the capacity of the soft packaging material container 20 can be increased while maintaining the maximum distance L2 of the soft packaging material container 20 so that the box body 10 does not deform. Can be secured.

In the package according to the embodiment of the present invention, the intermediate sheet 130 is alternately welded to the front side sheet 100 and the back side sheet 110 at regular intervals to make the expansion of the flexible packaging material container 20 uniform. Therefore, it is possible to suppress the local expansion of the flexible packaging material container 20 and suppress the deformation of the box body 10.

Hereinafter, the flexible packaging material container provided in the package according to the modified example of the embodiment of the present invention will be described. The flexible packaging material container 20a provided in the package according to the modified example of the embodiment of the present invention has only the configuration of the intermediate sheet 130, the first surface side welded portion 143 and the second surface side welded portion 144 according to the embodiment of the present invention. Since it is different from the package 1 according to the embodiment of the present invention, the description of the same configuration as that of the package 1 according to the embodiment of the present invention will not be repeated.

FIG. 14 is a front view showing a flexible packaging material container included in the packaging body according to the first modification of the embodiment of the present invention. As shown in FIG. 14, the intermediate sheet 130 of the flexible packaging material container 20a provided in the package according to the first modification of the first embodiment of the present invention has a plurality of cut portions 131c. Specifically, the cut portion 131c has a substantially U-shape and is partially cut from the intermediate sheet 130. The fluid filled in the soft packaging material container 20a can pass through the notch 131c and move inside the soft packaging material container 20.

In the packaging body according to the first modification of the first embodiment of the present invention, by providing the notch 131c in the intermediate sheet 130, no scrap is generated when forming the notch 131c, so that the soft packaging material is used. It is possible to prevent the above-mentioned pieces from being mixed in the container 20a.

FIG. 15 is a front view showing a flexible packaging material container provided in a package according to a second modification of the embodiment of the present invention. As shown in FIG. 15, each of the first surface side welded portion 143 and the second surface side welded portion 144 of the flexible packaging material container 20b provided in the package according to the second modification of the second embodiment of the present invention The flexible packaging material container 20b is formed with a gap at the center in the Y-axis direction. The fluid filled in the flexible packaging material container 20b can pass through the gap at the center of each of the first surface side welding portion 143 and the second surface side welding portion 144 in the Y-axis direction.

In the package according to the second modification of the embodiment of the present invention, a gap is provided at the center of each of the first surface side welded portion 143 and the second surface side welded portion 144 in the Y-axis direction. Compared with the case where there is no such gap, the fluid inside the flexible packaging material container 20b can be easily passed in the Z-axis direction.

It should be noted that the above-described embodiment disclosed this time is an example in all respects and does not serve as a basis for a limited interpretation. Therefore, the technical scope of the present disclosure is not construed solely by the embodiments described above. It also includes all changes within the meaning and scope of the claims. In the description of the above-described embodiment, the configurations that can be combined may be combined with each other.

1 Package, 10 Box, 11 Main Surface, 11A 1st Main Surface, 11B 2nd Main Surface, 12 Opening, 13 Insertion, 14 Spout Insert, 14c Insertion Auxiliary Cut, 20, 20a, 20b Soft packaging material container, 50 punch, 51 die, 60 1st plate-shaped member, 60s 1st support part, 60t 1st tip part, 61 2nd plate-shaped member, 61s 2nd support part, 61t 2nd tip part, 70 1st seal machine, 70c, 72c, 80c, 81c contact part, 71 1st cradle, 72 2nd seal machine, 73 2nd cradle, 80 3rd seal machine, 81 4th seal machine, 90 cutting machine, 90b Blade part, 91 3rd cradle, 100 front side sheet, 101 1st side, 110 back side sheet, 111 2nd side, 120 spout, 121 cylinder part, 122 lid part, 130 intermediate sheet, 131c notch part, 131h hole part , 140 Fixed part, 141 1st welding part, 142 2nd welding part, 143 1st surface side welding part, 143e, 144e end part, 144 2nd surface side welding part, 145 spout welding part, 150 1st surface side space , 151 Second surface side space, 152 End side space, L1 inner width, L2 maximum spacing, L3, L4, L5, L6, L7 distance.

Claims (4)

A box with a flat shape and
A flexible packaging material container housed in the box body and having a continuous internal space is provided.
The flexible packaging material container is
A front sheet with a first surface and
A back sheet having a second surface facing the first surface, and
Includes an intermediate sheet that extends in a plane and is sandwiched between the front side sheet and the back side sheet.
The intermediate sheet is partially welded to the front side sheet and partially welded to the back side sheet.
A package in which the intermediate sheet defines the maximum distance between the front side sheet and the back side sheet in a state where the flexible packaging material container is inflated. The flexible packaging material container further comprises a spout that is partially disposed between the ends of each of the front and back sheets and is joined to each of the front and back sheets.
The package according to claim 1, wherein the flexible packaging material container is fixed to the box body on the side opposite to the side where the spout is located. The intermediate sheet is alternately welded to each of the first surface and the second surface.
The package according to claim 1 or 2, wherein the intermediate sheet is located in a zigzag shape between the front side sheet and the back side sheet in a state where the flexible packaging material container is inflated. In the intermediate sheet, the portions alternately welded to each of the first surface and the second surface extend in the extending direction.
Both ends of the intermediate sheet in the extending direction are welded to each of the front side sheet and the back side sheet, and are alternately welded to each of the first surface and the second surface. The package according to claim 3, wherein a gap is provided between the two in the extending direction.

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