JPH08207963A - Bag-in-box type storage container - Google Patents

Abstract

PURPOSE: To provide a bag-in-box type storage container of which the internal bag can be easily built up into a specified polygonal box shape, and also, of which the handling is simple when the internal bag is stored in an external box. CONSTITUTION: On a flat bag form internal bag C, ribs 8, 8 which form the central lines in the height direction respectively on two surfaces, which are confronted to each other, of a body part 6 when being stood and formed, are formed. Then, the top and bottom ends of the rib 8 are respectively made a peak 9a being folded up in a ridge so that the internal bag C may correspond with a rectangular parallelopiped form external box B, and a folded up in a ridge part 9 which becomes an edge to connect two corners 9b, 9b on the top and bottom of the body part 6 is formed. Then, the flat bag form internal bag C is erected according to respective folded up in a ridge part 9 and built up into a rectangular parallelopiped form. Then, the built up internal bag C is stored in the external box B and stuck to the external box B to manufacture a bag-in-box type storage container A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is to easily store an inner bag in the form of a polygonal box when the inner bag folded in a flat bag shape is erected and stored in the outer box. The present invention relates to a bag-in-box type storage container capable of performing.

[0002]

2. Description of the Related Art Conventional polygonal box type bag-in-box type storage containers are generally
Only one rib portion serving as the center line is formed along the height direction on one surface of the body portion of the inner bag.
Therefore, when manufacturing a polygonal box-type bag-in-box type storage container, it is difficult to stand up the inner bag and assemble it into a regular polygonal box type corresponding to the shape of the outer box. Also, when assembling the inner bag into a polygonal box type and storing it in the outer box,
The upright state of the inner bag was unstable, and handling during manufacturing was inconvenient.

The present invention has been made in view of the above circumstances. Not only can the inner bag be easily assembled into a regular polygonal box type, but also the inner bag can be easily handled when stored in the outer box. An object of the present invention is to provide a bag-in-box type storage container.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a polygonal box-shaped outer box, a polygonal bottom portion and a top surface portion and a polygonal tubular shape from a state of being folded into a flat bag shape. A bag-in-box type storage container having an inner bag that is upright-formed in a polygonal box shape having a body part and is stored in the outer box, wherein the inner bag is a flat bag shape. In the folded state, the mountain folds are formed on the respective side portions of the protruding piece that vertically protrudes from the body portion when the state is raised from the state to the polygonal box shape. And a bag-in-box type storage container.

Further, in the bag-in-box type storage container having the outer box and the inner bag as described above, the inner bag may be used in place of the mountain fold portion or together with the mountain fold portion in the height direction of its body portion. Provided is a bag-in-box type storage container characterized in that at least two rib portions are formed along the above. Here, it is more preferable that the ribs form the center lines of at least two surfaces of the body portion of the inner bag facing each other.

[0006]

According to the present invention, the bag-in-box type storage container of the polygonal box type has the inner bag in the folded state, and the projection protruding vertically from the body portion when the inner bag is erected. Since the mountain folds are formed on each side of the piece, when manufacturing the bag-in-box type storage container, the inner bag folded in a flat bag shape is folded along the line of the mountain folds. As a result, it becomes easy to assemble the inner bag into a fixed shape corresponding to the shape of the polygonal box-shaped outer box, and the shape of the inner bag after assembly is stable. Will be easy to handle.

Further, by forming at least two rib portions along the height direction of the body portion of the inner bag,
When the inner bag is stored in the outer box, the upright state of the inner bag is stable, and the assembled inner bag is easy to handle. In particular, if these ribs form a center line along the height direction of at least two surfaces of the body that face each other, the standing state of the inner bag is more stable.

In the bag-in-box type storage container of the present invention, the inner bag which has been erected in a fixed shape as described above is stored in the outer box, and a part or all of these are adhered with a paste material or the like. It is formed by In such a bag-in-box type storage container, if the material of the inner bag is a water-resistant polymer compound such as polyethylene terephthalate (PET) and the material of the outer box is a paper material such as paperboard, the contents are Even if it is a liquid, the contents do not leak due to the inner bag, and the inner bag can retain and protect the shape of the outer bag, so that it is particularly suitable as a container for liquid.

[0009]

The present invention will be described below based on the embodiments shown in the drawings, but the present invention is not limited to the following embodiments.

FIG. 1 shows a bag-in-box type storage container according to an embodiment of the present invention. The storage container A is a rectangular parallelepiped bag-in-box type container composed of a rectangular parallelepiped outer box B and an inner bag C stored in the outer box B. Is provided with an inlet part 1 and a cap 2 fitted to the inlet part 1.

The outer box B of this embodiment is constructed by assembling paperboard into a rectangular parallelepiped shape and glued on it, and a rectangular outer box top surface portion 3 is provided with an injection hole 4 through which an injection port 1 is projected. ing. The material of the outer box B is not particularly limited, and a material used as an outer box of a normal bag-in-box type storage container can be used. Examples of such a material include white paperboard, yellow balls and chips. Examples thereof include paperboards such as balls and colored balls; coated papers, impregnated processed papers, processed papers such as laminated processed papers.

The inner bag C of this embodiment is, as shown in FIG.
The inlet part 1 is integrally attached to the central part of one short side which becomes the top surface part 7 of the inner bag C when it is upright-molded, and four rounds are sealed except that the inlet part 1 is opened. As shown in FIGS. 3 and 4, from a state of being folded into a flat rectangular bag, a rectangular parallelepiped shape having a rectangular bottom portion 5, a rectangular tubular body portion 6 and a rectangular top surface portion 7 is formed. It is what is done. Further, the inner bag C in the flat state has rib portions 8 formed on both side portions in the width direction in FIG. The method of forming the rib portion 8 is not particularly limited, but a method of heat sealing is preferable. Further, the ribs 8 and 8 formed here are not limited to two, and may be center lines along the length (height) direction on both surfaces of the flat inner bag C, for example. Further, two rib portions 8 and 8 may be formed respectively. When only two ribs 8 are formed, the position where the ribs 8 are formed is not limited to the side portions on both sides in the width direction of the flat inner bag C. For example, as described above, both sides of the flat inner bag C may be formed. You may form so that it may become a centerline along a length direction. However, in any case, these rib portions 8 are two surfaces of the body portion 6 facing each other when the inner bag C is assembled in a polygonal box shape (a rectangular parallelepiped shape in this embodiment). It is effective to stabilize the standing state of the inner bag C by forming at least one pair of rib portions 8 and 8 that face each other so as to form a center line along the length (height) direction of the inner bag C. is there.

On both surfaces of the flat inner bag C, four mountain folds 9 are formed corresponding to the shape of the outer box B, with the corners as vertices and heading toward the center points of the respective surfaces. When the inner bag C in the flat state is erected into a rectangular parallelepiped shape as described above, the mountain fold portion 9 has the upper and lower end portions of the rib portion 8 as mountain fold vertices 9a as shown in FIG. Forming a side portion connecting the two corners 9b, 9b on the upper side or the lower side, and projecting to the upper side and the lower side of the body portion 6 in a triangular shape to form projecting pieces 9c, 9c. The method for forming the mountain fold portion 9 is
Although not particularly limited, it is preferable to pressurize (heat press if necessary) the portion where the mountain fold portion 9 is to be formed to make a crease.

The material of the inner bag C of this embodiment is not particularly limited as long as it can be adhered to the outer box B and has excellent water resistance, and it is used for an inner bag of a normal bag-in-box. Examples of such materials include cellophane, polyethylene, polypropylene, polystyrene, polyvinyl chloride, polyvinylidene chloride, PET, polyvinyl alcohol, polycarbonate, polyamide, ethylene vinyl acetate copolymer, ethylene acetic acid. Examples thereof include vinyl alcohol copolymers and synthetic resins such as ionomers. Among them, PET is particularly preferably used. These materials may be used alone or in combination of two or more.

In the storage container A of this embodiment, the inner bag C is erected according to the mountain folds 9 so that the triangular projecting pieces 9c, 9c are formed.
Project above and below the body 6 and then fold 9
d and 9d are folded back to the body portion 6 side to be assembled into a rectangular parallelepiped shape corresponding to the outer box B, and the inner bag C is previously coated with an adhesive at several places inside the inner bag B. It is obtained by accommodating the injection port portion 1 of C so as to protrude from the injection hole 4. For example, after injecting a liquid such as liquor from the injection port portion 1, the cap 2 is closed to store the liquid, It is used for storage and transportation.

The storage container A of the present embodiment having the above structure
According to this, since the flat bag-shaped inner bag C is erected according to the mountain fold portion 9 formed corresponding to the shape of the outer box B and assembled in a rectangular parallelepiped shape, the inner bag C can be easily assembled and molded. Further, rib portions 8 and 8 are formed on both side portions in the width direction of the flat bag-shaped inner bag C, and these rib portions 8 and 8 act as core bones to keep the inner bag C in an upright state. Since the inner bag C is stabilized, the inner bag C can be easily handled when the inner bag C is stored in the outer box B. Further, since the inner bag C of the storage container A is formed of a synthetic resin or the like having excellent water resistance, the liquid content does not leak and is particularly useful as a storage container for liquid.

[0017]

The bag-in-box type storage container of the present invention has a flat bag-shaped inner bag on which mountain folds are formed, and when manufacturing the storage container, the flat bag-shaped inner bag is formed into a polygonal box type. Since it becomes easy to assemble it in a fixed shape corresponding to the outer box and store it in the outer box, not only can the dimensional accuracy of the bag-in-box type storage container be improved, but also the work efficiency in manufacturing thereof can be improved. it can.

Further, by forming at least two ribs in the flat bag-shaped inner bag, it is possible to improve the work efficiency in manufacturing the bag-in-box type storage container, and particularly, in the inner bag. By forming rib portions forming respective center lines of at least two surfaces of the body portion facing each other,
More effective.

[Brief description of drawings]

FIG. 1 is a perspective view of a bag-in-box type storage container of this embodiment.

FIG. 2 is a plan view of the inner bag of the storage container in a flat state.

FIG. 3 is a side view of the inner bag in a standing state.

FIG. 4 is a perspective view showing a state where the inner bag is assembled.

[Explanation of reference symbols] A bag-in-box type storage container B outer box C inner bag 5 bottom part 6 body part 7 top surface part 8 rib part 9 mountain fold part

Claims (4)

[Claims] 1. A polygonal box-shaped outer box and a polygonal box-shaped state provided with a polygonal bottom portion and a top surface portion and a polygonal tubular body portion from a state of being folded in a flat bag shape. A bag-in-box type storage container having an inner bag that is molded and stored in the outer box, wherein the inner bag is a polygonal box type from the state when folded in a flat bag shape. A bag-in-box type storage container, characterized in that a mountain fold portion is formed at each side portion of a protruding piece that vertically protrudes from a body portion when the body is erected. 2. A polygonal box-shaped outer box and a polygonal box-shaped state provided with a polygonal bottom portion and a top surface portion and a polygonal tubular body portion from a state of being folded into a flat bag shape. A bag-in-box type storage container having an inner bag that is molded and housed in the outer box, wherein the inner bag has at least two ribs formed along the height direction of its body. A bag-in-box type storage container characterized by being formed. 3. The bag-in-box type storage container according to claim 1, wherein the inner bag further has at least two rib portions formed along the height direction of the body portion. 4. The bag-in-box type storage container according to claim 2, wherein the rib portion forms a center line of each of at least two surfaces of the body portion of the inner bag facing each other.