Human Industry Corporation

Masao Idei

Sadao Kumasaka

Satomi Tada

Osamu Fujii

Koretoshi Katsuki

Ryoji Nagamine

Goro Yoneyama

Kazuo Hashimoto

Yosuke Sato

Tutomu Yamamoto

Kazuo Ibata

A method of producing polyurethane foam slab by allowing a urethane foam stock solution in a tank to expand in a reduced pressure. The flatness of the top of the polyurethane foam is secured by providing a lifting jig or a plate within the tank, or by rotating the tank. An apparatus for carrying out the method is also provided.

Apparatus for producing polyurethane foam

An apparatus for continuously manufacturing polyurethane foam slabs in a batch, which comprises a cylindrical tank for developing polyurethane foam, having an inlet at the side wall thereof for introducing therein polyurethane feed solution; a stirring tank for forming polyurethane foam feed solution, which is mounted on a carriage movably placed in proximity to the cylindrical tank; stirring blades mounted within the stirring tank; a discharge pipe extending from a lower side of the stirring tank to discharge the feed solution through the inlet into the cylindrical tank; pipes for introducing raw materials into the stirring tank; and a pipe for introducing a washing solvent for removing the raw materials. The cylindrical tank is interchangeably connected with the stirring tank through the discharge pipe.

Apparatus for manufacturing polyurethane foam slabs in a batch

Growing community of inventors

Kawagoe, Japan

Masao Idei