JPS6139224B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a Goebelt seal-type liquid container formed with the aluminum laminated side of a blank plate on the inside of the container, in which the Goebelt push seal portion has a leakage prevention mechanism for the liquid contained therein. In order to achieve this purpose, a synthetic resin tape adhered along the side edge of the welded part of the folded welded piece is extended beyond the upper end surface and welded to the inside of the first folded piece. This is what I did.

Conventionally, in this type of liquid container, a level difference occurs at the upper end surface of the welded part between the first folded piece and the folded welded piece, so that the container is not completely sealed when sealed with a Gebelt seal.
There was a risk that the liquid content would leak from this part during transportation or long-term storage of the product filled with the liquid content.

The present invention has been made in view of the above-mentioned points, and is made by extending a synthetic resin tape that adheres along the side edge of the welded part of the folded welded piece beyond the upper end surface of the welded piece. The step is filled in at the upper end surface of the welded portion between the folded piece and the folded welded piece.

Embodiments of the present invention will be described below with reference to the drawings.

The material B constituting the Goebeltseal type liquid container A is made by laminating a paper layer 1 and an aluminum layer 2, and the outer surface is coated or laminated with three synthetic resins such as polyethylene.
A blank plate C obtained by punching out this material B consists of folded pieces a, b, c, and d and a folded and welded piece e.

And the aluminum layer 2 of this blank board C
A synthetic resin tape f such as polyethylene is adhered to the side edge of the folded welded piece e, and this synthetic resin tape f protrudes 8 beyond the upper end surface of the folded welded piece e. There is.

In the blank board C, 4 is a folding line, 5 is a spout, 6
and 7 are welded parts.

As shown in Fig. 3, the folded pieces a of the blank board C,
B, c, and d are folded into a square tube along the folding line 4 with the aluminum layer 2 side facing inside, and the welded piece e is welded to the inside of the first folded piece d. At this time, since the synthetic resin tape f protrudes 8 from the upper end surface of the folded welding piece e, this protrusion 8 allows the synthetic resin tape f to be welded to the first folded piece d as shown in FIG. The step 9 at the welded part with the piece e is filled.

In this state, as shown in Fig. 3, fold the welded parts 6, 6 of the second folding piece c and the fourth folding piece a inward along the folding line 4, and fold the welded parts 6, 6 of the second folding piece c and the fourth folding piece a inward to cover this part. When the welded parts 7, 7 of the 1st folding piece b and the 1st folding piece d are folded along the folding line 4 and pressed and welded in the shape of a Gebelt push seal as shown in Fig. 6, a step is formed as shown in Fig. 6. The part 9 is completely filled in, and there is no gap from which the liquid content may leak.

In the present invention, a synthetic resin tape is adhered along the side edge of a folded welded piece of a blank plate forming a Goebeltsutseal type liquid container, and this tape is made to protrude from the upper end surface of the folded welded piece. The step at the end face of the welded part between the folded piece and the first folded welded piece can be effectively filled, and when welded in a Gebelt-tup seal shape, leakage of the content liquid from this part is completely prevented. In addition, it is possible to further strengthen the welding in this portion.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a cross-sectional view of the material constituting the Goebelt-Pseal type liquid container, FIG. 2 is a partial plan view of a blank plate punched from the material, and FIG. 3 is a partial plan view of a blank plate punched from the material. 4 is a cross-sectional view taken along line X-X in FIG. 3, FIG. 5 is a partial plan view of the sealed portion, and FIG. 6 is a cross-section of the sealed portion. It is a diagram. A...Gebelt-tup seal type liquid container, B...
...Material, C...Blank board, a, b, c, d...
Folded piece, e... Folded welded piece, f... Synthetic resin tape, 1... Paper layer, 2... Aluminum layer, 3...
synthetic resin layer, 4... folding line, 5... spout, 6,
7...Welded part, 8...Protrusion part, 9...Step.

Claims (1)

[Claims] 1. In a Gebert-Zupsheel liquid container formed of a blank plate with aluminum laminated on the inner surface of the container and coated or laminated with synthetic resin on top, the first fold is when the blank plate is folded into a square tube. A synthetic resin tape welded along the side edge of the folding welded piece attached to the fourth folding piece that goes inside the tatami piece is made to protrude from its upper end surface, and the first folding piece is attached to the tatami piece. By filling the difference in the upper end surface of the welded part between the folded welded piece and the folded welded piece, when the tops of the first folded piece and the third folded piece are top-sealed from both sides, leakage of the liquid content is prevented. A Gebert-Tup seal type liquid container characterized by the elimination of gaps.