Method for forming container

Details Method for forming container Method for forming container

1989-05-18

1990-02-13

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156285, 156292, 156344, 264549, 264550, 206204, 2065243, B32B 3116

Patent

active

049003852

ABSTRACT:
Disclosed herein is an improved method for forming a double wall container by laminating a thermoplastic resin sheet for a container main body and a breathable thermoplastic resin sheet or film for an inner body with a low-melting adhesive, heating the laminate sheet at a forming temperature, and forming the heated laminate sheet by using a male and female molds arranged with a certain space, characterized in that the container main body and the breathable inner body are separated with a prescribed distance from each other by vacuum suction through the female mold or by air pressure through the male mold. On account of the double wall structure, the container prevents the content from becoming sticky and deteriorated and keeps the content fresh.

REFERENCES:
patent: 3549446 (1970-12-01), Bennett et al.
patent: 3752065 (1973-08-01), Reiter
patent: 3935358 (1976-01-01), Wyeth et al.
patent: 4443507 (1984-04-01), Yamada et al.

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