JPS59115262A - Manufacture of double vessel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a so-called bank-in-box, a double container consisting of an outer body and an inner bag.

Conventionally, methods for manufacturing double containers include, for example, expanding the outer body and gluing the inner bag, or expanding the inner bag in advance and inserting and pasting it into the outer body. .

However, when using such conventional methods, the manufacturing process is complicated, making it difficult to mass-produce lines, resulting in extremely low production efficiency and problems with the adhesion between the outer body and the inner bag. Ta. In particular, it is extremely difficult to completely insert and attach the inner bag to small diameter, long and narrow round bodies, which are in high demand, and it also causes serious problems in terms of productivity and adhesion between the outer body and the inner bag. .

Therefore, the present inventor has devised a new manufacturing method that eliminates the drawbacks of the conventional method and can provide double-sided containers with a simple process and excellent adhesion and productivity between the outer body and inner bag of various shapes. tJ
As a result of various researches aimed at emitting f1, the present invention has been completely completed.

That is, in the present invention, a flat inner bag is bent into an S-shape and inserted into the outer body, both sides of the inner bag are adhered to the inner wall of the outer body, and then air is injected into the inner bag. This is a method for manufacturing a double-layered container, characterized in that the inner bag is expanded and brought into close contact with the inner wall of the outer body.

The present invention will be further explained below with reference to drawings showing one embodiment thereof.

1 is the outer body, and its shape may be any circular body, square body, conical body, gourd body, etc., and its material may be plastic, courtesy, metal, or various laminated materials, but it does not matter; However, one with a rigidity of 1 is preferable. Visit,
This outer body 1 may or may not have a bottom or a lid.

Reference numeral 2 denotes a flat inner bag formed by crushing a bag body into a flat shape, and the shape and size of the inner bag correspond to the shape and size of the outer body 1. The inner bag 2 may be a sealed type (with an injection port 1 or an open type), and its material may be plastic sheet or film, paper, metal foil, or various laminated materials, but it may be flexible. It is preferable to have one.

In order to carry out the present invention, the flat inner bag 2 is inserted into the outer body 1 as described above, and at this time, the flat inner bag 2 is bent into a total 8-shape before being inserted. Next, both sides 2a of the insertion inner bag 20 are adhered to the inner wall of the zbi outer body 1.

This bonding method may be heat sealing, gluing, adhesive tape, etc., and the bonding location may also be
, 2d spot glue method, or 2 ar 2 b all 2 b line glue method. After 4 degrees, if air is forcibly injected into the flat inner bag 2 inserted into the outer body 111M and the flat inner bag 2 is fully expanded, the inner bag 2 will come into close contact with the inner wall of the outer body 1. A double container is obtained.

As mentioned above, according to the uninvented method, the process is extremely simple,
It is possible to manufacture a double-layered container with excellent adhesion to the inner bag with an outer body of any shape including a nine-body body, and it is also easy to mass-produce the same. This container has an extremely wide range of uses, including storing liquids and solids such as frozen foods and industrial products, as a container for instant foods, etc. Of course, since it is a double container, if it is sealed 7c, it goes without saying that deformation will not occur due to reduced pressure such as temperature drop in the same part of the container.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view of the outer body, Fig. 2 is a perspective view of the flat inner bag, Fig. 3 is a perspective view showing the inserted state, and Fig. 4 is a perspective view of the flat inner bag. The plan view after air injection is shown. 1-----One outer body 2----One flat inner bag 2a r
2b -- Above the side of the inner bag Applicant: Tokai Metals Co., Ltd. "・-1 Ne 9 Hi! 21 Step Procedure Amendment (Voluntary) 6. January 24, 1980 1 Case Table 7J (1988) Patent Application No. 224374 2 Name of the invention Method for manufacturing double-layered containers 3 Relationship to the case of a person who wears sleeves El ball Address of origin 4,'1 Tomiya-cho, Kanayō-ku, Yokohama, Tokai Kinzoku Co., Ltd. Representative Kenji Okawara Department 4 Agent's amendment Contents of drawings to be corrected Figures 2 and 4 will be corrected as shown in the attached drawings.

Claims (1)

[Claims] Insert the flat inner bag into the outer body by bending it into an S shape,
A method for manufacturing a double-layered container, characterized in that both sides of the inner bag are adhered to the inner wall of the outer body, and then air is injected into the inner bag to expand and bring the inner bag into close contact with the inner wall of the outer body.