JP3103211B2 - Packaging unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging unit for filling a liquid, a semi-liquid, or the like, and a three-dimensional hexahedron by opening a flat folded unit. The present invention relates to an improvement of a packaging unit disclosed in JP-A-1-279070.

[0002]

2. Description of the Related Art In the case of a packaging unit disclosed in Japanese Patent Application Laid-Open No. 1-279070, a filling opening is formed in a part of a hexahedron, a filling member is attached thereto, and the packaging unit is opened to form a hexahedron. After that, the filling material is injected into the inside through the injection member or is discharged from the inside.

[0003]

However, in the case of the above-mentioned packaging unit, since the filling member is assumed to be a liquid, when the paint is filled, for example, the filling member is used to separate the container from here into another container. There is the inconvenience of having to transfer paint and use it.

[0004] It is an object of the present invention to provide a packaging unit which does not have to transfer the filling every time.

[0005]

The configuration of the packaging unit according to the present invention is as follows.

[0006] A core for forming a hexahedron is inserted between the inner bag and the outer bag, the inner bag and the outer bag are sealed, and the whole is folded flat to release the hexahedron. In a packaging unit capable of forming a sealed container comprising the above, a core body is cut off in an arbitrary U- shape on one surface of a hexahedron to form an opening groove, and heat sealing is performed between the inner bag body and the outer bag body in this opening groove. A packaging unit with a large-diameter opening.

[0007]

In order to open the packaging unit greatly, insert a cutter into the heat seal portion inside the large-diameter opening and cut along the heat seal to cut into the size of the pre-formed large-diameter opening. Can be opened. For example, paint or commercial jam, margarine, etc. can be used directly from this cut.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, 1 is a packaging unit, 2 is an injecting member, and 3 is a large-diameter opening.
As shown in FIGS. 2 and 3, an opening groove 5 is formed by cutting a core body (corrugated cardboard) 4 forming a packaging unit into a U shape, and an outer bag body 6 and an inner bag body 7 are formed in the opening groove 5. The heat seal 8 is used.
By cutting the portion with the cutter 9, the inside 10 of the large-diameter opening 3 can be opened as shown in FIG. In the case of the embodiment, filling in the packaging unit 1 is performed by the injection member 2. The shape of the large-diameter opening 3 is arbitrary, such as a circle or a triangle. If necessary, large-diameter openings 3 may be formed on two surfaces.

As described above, according to the present invention, a large-diameter opening which can be easily opened by a cutter is formed in a packaging unit, and this large-diameter opening can be used depending on the use of the filling material. This is convenient because it is not necessary to transfer to another container as in the conventional case.

[Brief description of the drawings]

FIG. 1 is a perspective view of a packaging unit embodying the present invention.

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

FIG. 3 is a sectional view taken along line BB ';

FIG. 4 is an explanatory view of a situation where a large-diameter opening is opened.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Packaging unit 2 Injection member 3 Large-diameter opening part 4 Core body 5 Opening groove 6 Exterior bag body 7 Interior bag body 8 Heat seal 9 Cutter

Claims (1)

(57) [Claims] 1. Inserting a core for forming a hexahedron between the inner bag and the outer bag, sealing the inner bag and the outer bag, and opening the whole folded flat. In a packaging unit capable of forming a sealed container composed of a hexahedron, an opening groove is formed by cutting off a core in an arbitrary U- shape on one surface of a hexahedron, and an inner bag body and an outer bag body are formed in the opening groove. A packaging unit in which a large-diameter opening is formed by heat sealing the space.