JPH06270960A - Package - Google Patents

Abstract

PURPOSE:To prevent generation of a pinhole in a liquid-tight bag due to fluid pressure which the bag receives repetitively during transportation, by a method wherein a dehedral liquid-tight bag inserted into a hexagonal box which can be folded along folding lines into a flat dehedral body is sealed at its peripheral edge along an inwardly folding line. CONSTITUTION:A tetragonal supporter 1, comprising a front side 2, a rear side 3 and a righthand and a lefthand side 4 and 5 which are folded in the center, is provided inside an outer bag 18 which is formed in a plastic dehedral body and sealed. A liquid-tight bag 15 formed of plastics in a dehedral body is inserted into the supporter 1. In this instance, it is designed that the width of the liquid-tight bag 15 when it is flat is a little larger than that of the supporter 1 when it is flat. The liquid tight bag 15 is sealed at several points by hot melt along an inwardly folding line (a) in the vertical direction and an inwardly folding line (b) in the horizontal direction, so that the bag 15 and the supporter 1 are unified. By this, if content in the bag 15 moves flowingly, as the liquid-tight bag 15 is fixed firmly to the supporter 1, there is no possibility of generation a pinhole due to concentration of stress at one part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses, for example, a cardboard box, which can be formed into a hexahedron box when assembled, as a support for holding a three-dimensional shape. A liquid-tight bag consisting of the above-mentioned support, the support is inserted into an outer bag consisting of a dihedron to seal the outer bag, and the inlet of the inner bag is inserted into the outer bag via the support and the outer bag. The present invention relates to a package which is exposed to the outside and seals the inner bag and the outer bag in a liquid-tight state at the injection port.

[0002]

2. Description of the Related Art A package (packaging unit) is disclosed in Japanese Patent Laid-Open No.
No. 279,070, which is publicly known,
It has the following drawbacks.

[0003]

[Problems to be Solved by the Invention]

a. Usually, the contents are filled in the inner bag leaving a head space, and therefore, during transportation, the contents flow due to vibration, and there is a risk of pinholes being generated in the inner bag due to the repeated flow pressure.

B. If the strength of the inner bag is increased in order to prevent the occurrence of pinholes, the cost becomes high, and the characteristics of the packaging body effective in saving resources and preventing waste pollution are impaired.

An object of the present invention is to propose a packaging body which eliminates the drawbacks described in the above a and b.

[0006]

The structure of the package according to the present invention is as follows.

A vertical inward fold line is formed in the center of the left and right side faces, and it can be folded into a flat dihedron by this fold line, and when assembled, the bottom and mouth of the support which can be formed into a hexahedral box are opened. In this state, the inner bag made of the dihedron is inserted thereinto, the support is inserted in the outer bag made of the dihedron to seal the outer bag, and the inlet of the inner bag is made into the support and Formed when the support is assembled and formed into a box shape in a packaging body that is exposed to the outside of the outer bag via the outer bag and seals the inner bag and the outer bag in a liquid-tight state at the injection port. A package formed by sealing the peripheral edge of an inner bag on the support along the inward folding line of the support.

The support and the inner bag may be sealed along the inward folding line or the entire vicinity of the folding line, or may be sealed at a point. The sealing is performed at least on the bottom side of the support along the inward folding lines of the inner folding lid, on the inner volume of the support along the four vertical corners, and on the mouth side, the inner folding is performed. Seal all or at points along the inward fold line of the lid. As a sealing method, use of hot melt or other methods can be considered.

[0009]

[Function] The package is folded into a flat dihedron at the center of the left and right sides, and when used, the support is opened upright in a box shape to form a hexahedron, and the liquid is filled into the inside through the inlet. , Close the inlet and seal. When pouring out the contents, do so from the inlet. After pouring out all the contents, the outer bag is cut off to take out the support, the support and the inner bag are separated, and the support, the inner bag and the outer bag are separated and treated as waste. .

When the package is repeatedly used,
Since it is inconvenient to keep it open to the cube, the air in the inner bag is evacuated from the inlet, and the support is folded flat for storage or transportation.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a front view of a package according to the present invention which is flatly folded, and a portion drawn by a dotted line is a corrugated cardboard support. As shown in FIG. 2, it is a quadrangle composed of a front surface 2 and a back surface 3 and a left side surface 4 and a right side surface 5 that are folded at the center, and inner folding lids 6 and 7 are provided along the lower edges of the front surface 2 and the rear surface 3 on the bottom side. The left and right side surfaces 4, 5 are formed with triangular outer folding lids 8, 9 along the lower edges.
The inner folding lids 10 and 11 are formed along the upper edges of the front face 2 and the back face 3 on the mouth side, and the left and right side faces 4, 5 are formed.
Triangular outer folding lids 12 and 13 are formed along the upper edge of, and a hole 14 is provided in the center of the inner folding lid 12 on the front surface 2 side.

Reference numeral 15 denotes an inner bag made of a plastic film dihedron inserted inside the support 1, and the lateral width when the inner bag 15 is flat is when the support 1 is flat. It is slightly larger than the inner width and the vertical width is slightly larger than the inner folding lids 6, 7, 10, 11 and the outer folding lids 8, 9, 12, 13. Reference numeral 16 denotes an injection port attached to the inner bag 15 at a position to be accommodated in the hole 14 of the inner folding lid 12 of the support 1,
Is a cap.

Reference numeral 18 denotes an outer bag made of a plastic film dihedron which covers the entire outer surface of the support 1.
The horizontal and vertical widths of 18 are slightly larger than the horizontal and vertical widths of the support 1, and are sealed. The inner bag 15 and the outer bag 18 are in close contact with each other at the injection port 16.

In the figure, a is a vertical inward fold line in the support 1, b is a horizontal inward fold line, and the inner bag 15 is at the vertical inward fold line a and the horizontal inward fold line b. Several points are point-sealed with hot melt.

The above-mentioned package is normally folded flat as shown in FIG. 1, and when used, it becomes a quadrangular hexahedron by pushing both sides inward in FIG.
Further, at the time of this opening, the inner folding lids 6, 7, 10, 11 and the outer folding lids 8, 9, 12, 13 are also folded toward the inside by 90 °, so that the outer folding lids 8, 9, 12, 13 are separated from each other. The ends are overlapped and fastened with tape or the like. The contents are taken in and out through the inlet 16.

[0016]

As described above, according to the present invention, since the inner bag and the support are sealed at the required points, the inner bag is integrated with the support. As a result, even if the contents flow, since the inner bag is firmly fixed by the support, there is no concern that stress concentrates on a part and a pinhole is generated.

[Brief description of drawings]

FIG. 1 is a front view of a state in which a package according to the present invention is flatly folded.

FIG. 2 is a sectional view taken along the line AA ′.

FIG. 3 is a perspective view of an upper portion of a package formed in a quadrangle.

FIG. 4 is a perspective view of a bottom portion of the packaging body formed in a quadrangle, excluding an outer bag.

FIG. 5 is a cross-sectional view of the bottom of the package.

[Explanation of symbols]

 1 Support 2 Front 3 Back 4 Left Side 5 Right Side 6, 7 Inner Folding Lid 8, 9, Outer Folding Lid 10, 11 Inner Folding Lid 12, 13 Outer Folding Lid 14 Hole 15 Inner Bag 16 Inlet 17 Cap 18 Outer Bag

Claims (4)

[Claims] 1. A bottom part and a mouth part of a support which can be formed into a flat dihedron by forming a vertical inner fold line at the center of the left and right side faces and can be formed into a hexahedral box when assembled. Insert the dihedron inner bag into this with the open, and insert the support into the dihedron outer bag to seal the outer bag and support the inlet of the inner bag. A support is assembled into a box-like shape in a package that is exposed to the outside of the outer bag via the body and the outer bag and seals the inner bag and the outer bag in a liquid-tight state at the injection port. A package formed by sealing the peripheral edge of the inner bag along the inward folding line of the support formed at this time. 2. The package according to claim 1, wherein the entire inward folding line is point-sealed along the entire folding line or along the folding line. 3. The sealing is performed at least at the bottom side of the support along the inward folding line of the inner folding lid, and at the inner volume of the support at four longitudinal corners, and at the mouth side. The packing body according to claim 1 or 2, wherein is performed along an inward folding line of the inner folding lid. 4. The package according to claim 1, wherein the sealing is performed by hot melt.