Composite material compositions using wasterpaper and method of

Details Composite material compositions using wasterpaper and method of Composite material compositions using wasterpaper and method of

1979-07-05

1981-07-21

Woodberry, Edward M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

264118, 264122, C08L 102

Patent

active

042797900

ABSTRACT:
This invention provides composite material compositions comprising wastepaper, a thermoplastic resin and/or other additive(s), said compositions having higher heat resistance, flame retardancy and mechanical strength and smaller linear shrinkage in molding than the conventional compositions of synthetic resins alone or blended with woodmeal or an inorganic filler. There is also provided a method of producing said compositions comprising a wastepaper crushing step, a step of mixing crushed wastepaper with a thermoplastic resin and/or other additive(s) while drying said wastepaper, a blend melting step, a blend kneading step and a blend granulating step. In an embodiment of this invention, scraps of moldings from the composite material compositions using wastepaper may be mixed with wastepaper, a thermoplastic resin and/or other additive(s) and similarly treated and molded into a new composition.

REFERENCES:
patent: 3230187 (1966-01-01), Oldham
patent: 3718536 (1973-02-01), Downs et al.
patent: 3919141 (1975-11-01), Quattrociocchi
Jetro, May 1980, "Topics," pp. 33-35, New Composite Material from Waste Paper and Plastic.
C.A. 69, (1968), 29923p, Modified Cellulosic Base for Construction Material, Saavedra S.A.

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