Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber
Patent
1999-03-16
2000-10-31
Weisberger, Richard
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Rod, strand, filament or fiber
428389, 428391, 428392, B05D 302
Patent
active
061399566
ABSTRACT:
Depositing a thermoplastic resin powder in between the individual fibers of a reinforcing continuous fiber bundle and subsequently applying a solution of a binder resin dissolved in a solvent to the resulting reinforcing continuous fiber bundle, the thermoplastic resin powder is fixed in between the individual fibers via the binder resin which concurrently works to bind the individual fibers together. Then, the solvent of the binder resin is substantially removed from the resulting reinforcing continues fiber bundle within a temperature zone not above the melting point or flow point of the thermoplastic resin powder. In the molding material produced by the method, the individual fibers of the reinforcing continuous fiber bundle, the individual fibers and the thermoplastic resin powder, and the individual thermoplastic resin powders are independently fixed together, all in a pin-point fashion via the binder resin, so the molding material substantially does not contain the solvent of the binder resin. The molding material of the present invention is non-adhesive with draping properties, good handleability, excellent lay-up workability and outstanding moldability, in which the dissociation of the thermoplastic resin powder is prevented. Those molded from the molding material of the present invention have great composite properties and excellent appearance.
REFERENCES:
patent: 3862287 (1975-01-01), Davis
patent: 4614678 (1986-09-01), Ganga
patent: 5026410 (1991-06-01), Pollet et al.
Journal of Thermoplastic Composite Materials, vol. 3, Oct. 1990 pp. 325-354.
38th International SAMPE Symp., Holty et al, Variables Affecting the Physical Properties of Consolidated Flexible Power-Coated Towpregs. May 10-13, 1993.
Endoh Yoshihiro
Iizuka Yoshio
Toho Rayon Co. Ltd.
Weisberger Richard
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