Fiber reinforced thermoplastic composite with helical fluted sur

Details Fiber reinforced thermoplastic composite with helical fluted sur Fiber reinforced thermoplastic composite with helical fluted sur

1995-09-14

1998-03-10

Weisberger, Richard

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

428357, 428362, 428364, 428369, 428397, 428400, 428401, B32B 300

Patent

active

057259542

ABSTRACT:
There is provided an elongate fiber reinforced thermoplastic composite which comprises a multiplicity of filamentary fibers, each extending longitudinally of the composite and a thermoplastic resin matrix impregnating and surrounding the filamentary fibers. The composite has alternating lobes and valleys on its surface defining a fluted cross section. The lobes and valleys extend helically along the longitudinal axis of the composite. In a preferred form of the invention, the filamentary fibers also extend helically along the longitudinal axis of the composite, and desirably, the helical pitch of the filamentary fibers is substantially the same as that of the lobes and valleys. The helical pitch may suitably range from about 1.5 to about 8 inches and the elongate composite may have a diameter of from 0.125 to 8 inches. The fibers may comprise from about 20 to about 80 percent by weight of the composite. The number of fibers in the elongate composite may be within the range of 2,000 to 70,000,000 filaments.

REFERENCES:
patent: 5176775 (1993-01-01), Montsinger
patent: 5447793 (1995-09-01), Montsinger

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