Pultruded fiber-reinforced plastic and related apparatus and met

Details Pultruded fiber-reinforced plastic and related apparatus and met Pultruded fiber-reinforced plastic and related apparatus and met

1994-08-25

1999-02-09

Weisberger, Richard

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428330, 428331, 428332, 428333, 428334, 428337, 522908, 433 20, B32B 100

Patent

active

058691782

ABSTRACT:
Disclosed are profiles of fiber-reinforced polymeric plastic and a pultrusion apparatus and method for the manufacture thereof. The apparatus is preferably vertically disposed. As one or more fibers is fed into the apparatus, each fiber is spread and wetted with monomer resin in a bundle spreader, formed in a die, and then subjected in a curing chamber to a source of radiation which initiates polymerization of the monomer, resulting in a fiber-reinforced polymeric plastic exiting from the pultrusion apparatus. Suitably, the radiation is ultraviolet, the monomer resin is methacrylate resin, and the fiber is quartz. The resultant profile is long and thin like a structural steel wire, but typically will have only 1/4 the weight thereof while having a strength comparable thereto. Thus, the profile is useful as an orthodontic wire as a replacement instead of structural steel wires used as orthodontic wires. Several profiles can also be aggregated and the aggregate used to make, for instance, artificial limbs or other structural products.

REFERENCES:
patent: 4462946 (1984-07-01), Goldsworthy
patent: 4717341 (1988-01-01), Goldberg et al.
patent: 4894012 (1990-01-01), Goldberg et al.
Advanced Polymer Composites, Bor Z. Jang pp. 64 & 65.
Jancar et al., "Thermoplastic Fibre-Reinforced Composites for Dentistry", vol. 4, Journal of Materials Science: Materials in Medicine, pp. 562-568 (Dec., 1993).
Patel et al., "The Effect of Thermoforming on the Properties of Fiber-Reinforced Composite Wires", vol. 3, Journal of Applied Biomaterials, pp. 177-182 (1992).
Goldberg et al., "The Use of Continuous Fiber Reinforcement in Dentistry", vol. 8, Dental Materials, pp. 197-202 (May, 1992).

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