Method for producing a molded foam article with an integral skin

Details Method for producing a molded foam article with an integral skin Method for producing a molded foam article with an integral skin

1995-01-24

1997-09-09

Kuhns, Allan R.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 466, 264126, 264155, 264161, 264510, 264536, B29C 4406, B29C 4418

Patent

active

056652852

ABSTRACT:
A molded foam article with an integral skin is produced by blow-molding a parison in a cavity of a metal mold to form a hollow member, filling the hollow member with pre-expanded thermoplastic resin besides before cooling and solidification of the hollow member, and heating the pre-expanded beads to cause the beads to expand further and fuse together. A filler for the pre-expanded thermoplastic resin beads is provided with a cutter for making a hole in the hollow member before introducing the resin beads into the hollow member.

REFERENCES:
patent: 4070429 (1978-01-01), Uhlig
patent: 4323411 (1982-04-01), Uhlig
patent: 4546899 (1985-10-01), Williams
patent: 5100607 (1992-03-01), Robbins, III
patent: 5104472 (1992-04-01), Kasugai et al.
patent: 5366674 (1994-11-01), Hattori et al.

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