Process for producing fiber reinforced foam having a random orie

Details Process for producing fiber reinforced foam having a random orie Process for producing fiber reinforced foam having a random orie

1996-06-12

1998-01-13

Weisberger, Richard

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 51, B29D 700

Patent

active

057075719

ABSTRACT:
A fiber reinforced, thermoplastic foam is produced by dispersing fibers of controlled dimensions and blowing agent in molten thermoplastic and extruding the mixture with high back pressures. As the blowing agent expands, the fibers become randomly oriented and a fine cellular structure is formed in the plastic which freezes the fibers in a random spatial orientation. The resulting reinforced foam may be used as formed or compacted to collapse the foam and then shaped.

REFERENCES:
patent: 3474050 (1969-10-01), Chappelear et al.
patent: 4828897 (1989-05-01), Staneluis et al.
patent: 4940629 (1990-07-01), Weber et al.
patent: 5200261 (1993-04-01), Taguchi et al.
Kenrich Petrochemicals, Inc., partial product brochure, pp. 8, 10, 12, 14, 16, 18, 20, 22, add: 29 and add: 41 (undated).

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