Hitachi Zosen Corporation

Settsu Corporation

Eiji Koyanagi

Koichi Yoshida

Seiichi Yonekawa

Shigeru Miyawaki

Masatoshi Tohbo

Katsuhiro Yamaji

Hidetoshi Hirata

Kiyohisa Ueda

Masahiro Takeda

The invention provides an apparatus for compressively molding cushioning material using a quadrangular cylindrical molding box having an end side closed by a receiver mold, whereas the other end of said molding box receives supply of dry raw material consisting of fiberized paper or pulp by a volume corresponding to several times the actual volume of a molded body. A compressive mold inserted from the other end of the molding box is shifted to one-end side of the molding box to compress supplied raw material between a receiver mold. Simultaneously, a core member is retreated to a predetermined position of said one-end side in association with the shifting movement of the compressive mold. As a result, the core portion having thin thickness and the interior of the core member can securely be compressed and molded with even density.

Method and apparatus for compressively molding cushioning material made

Growing community of inventors

Osaka, Japan

Eiji Koyanagi