Method for producing a fiber-reinforced thermoplastic resin foam

Details Method for producing a fiber-reinforced thermoplastic resin foam Method for producing a fiber-reinforced thermoplastic resin foam

1996-12-09

2000-03-28

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 466, 264 468, 264 469, 264 54, 264257, 264514, 264571, 264572, B29C 4424

Patent

active

060427655

ABSTRACT:
A method of the invention can produce a fiber-reinforced thermoplastic resin foamed product having less unevenness in a thickness of a surface layer and excellent mechanical strength. In the method, a fiber-reinforced thermoplastic resin sheet is continuously shaped into a hollow member, and a foaming resin composition containing a thermoplastic resin and a foaming agent is supplied into an interior of the obtained hollow member. The foaming agent is foamed so that the hollow member is shaped into a desired form by the foaming pressure.

REFERENCES:
patent: 3399094 (1968-08-01), Skoggard et al.
patent: 3655470 (1972-04-01), Takeshima et al.
patent: 4025375 (1977-05-01), Leasure
patent: 4097319 (1978-06-01), Shimokawa et al.
patent: 4240850 (1980-12-01), Arntz
patent: 4940629 (1990-07-01), Weber et al.
patent: 5374383 (1994-12-01), Brambach
Patent Abstracts of Japan, vol. 017 No. 191(M-1396) Apr. 14, 1993.

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