Sekisui Kaseihin Kogyo Kabushiki Kaisha

Hideo Shibata

Masaru Takada

Tsutomu Isaka

Takayuki Inoue

Shuhei Doi

Tokitaro Suzuki

Mikio Fukumura

Katsutoshi Ochi

Hisao Ogawa

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.

Method for forming container

A method for producing cross-linked polyethylene resin foams which comprises mixing a polyolefin resin, a blowing agent and, optionally, a surface active agent containing hydroxyl groups or an acid amide compound under pressure, said polyolefin resin containing a cross-linkable ethylene polymer having on the side chains thereof silyl groups which effect cross-linking upon contact with water; extruding the mixture into a low pressure zone where the extrudate is allowed to expand; and bringing the expanded extrudate into contact with a silanol condensing catalyst so that the expanded extrudate is cross-linked on contact with water.

Production of foam

Growing community of inventors

Nara, Japan

Hideo Shibata