Process for the manufacture of molded parts from fibrous materia

Details Process for the manufacture of molded parts from fibrous materia Process for the manufacture of molded parts from fibrous materia

1985-04-02

1989-05-09

Anderson, Philip

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

264 453, 264 54, 264257, 264DIG18, 4283179, 521 53, 521 54, B32B 502, B32B 520, C08J 524, C08J 940

Patent

active

048289132

ABSTRACT:
A process for the manufacture of molded parts from fibrous material, particularly cellulose-containing fibers. A particulate binder is incorporated into a fiber filling after which the mixture is precompacted into a fiber mat which is subjected to a hot steam treatment and is finally molded into the finished part under pressure and heat. The binder consists of thermoplastic particles into which a blowing agent is incorporated by forming an alloy-like state which is activated prior to final molding of the part, preferably by means of hot steam treatment, and a binder which cross-links when exposed to heat applied to the surface of the particles.

REFERENCES:
patent: 3671377 (1972-06-01), Marra
patent: 3764428 (1973-10-01), Oshima et al.
Whittington's Dictionary of Plastics, by Lloyd R. Whittington, Stamford, Conn., Technomic, .COPYRGT.1968, Preface; p. 9.
Dictionary of Plastics, by J. A. Wordingham and P. Reboul Feltham, Middlesex, England, New NBS Books-Publ. by the Hamlyn Publishing Group, Ltd., .COPYRGT.1968, p. 9.
Hackh's Chemical Dictionary, Fourth Edition, Completely Revised and Edited by Julius Grant, New York, McGraw-Hill, .COPYRGT.1972, pp. 28-29.

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