초록 ▼

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 va

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.

대표청구항 ▼

[ That which I claim is:] [1.] An elongate fiber reinforced thermoplastic composite comprising a multiplicity of filamentary fibers, each extending longitudinally of the composite, and a thermoplastic resin matrix impregnating and surrounding said filamentary fibers, said composite having alternatin

[ That which I claim is:] [1.] An elongate fiber reinforced thermoplastic composite comprising a multiplicity of filamentary fibers, each extending longitudinally of the composite, and a thermoplastic resin matrix impregnating and surrounding said filamentary fibers, said composite having alternating lobes and valleys on its surface defining a fluted cross section, said lobes and valleys extending helically along the longitudinal axis of the composite.