Glossy finish fiber reinforced molded product and processes of c

Details Glossy finish fiber reinforced molded product and processes of c Glossy finish fiber reinforced molded product and processes of c

1990-10-31

1992-03-24

Cannon, James C.

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

With reshaping or surface embossing of formed article

1563082, 264122, 264294, 264320, 428409, B29C 5102, B32B 3120, B32B 3300

Patent

active

050986244

ABSTRACT:
Fiber reinforced thermoplastic molded products, sheets, and the like, having a glossy surface are produced by intimately blending discrete reinforcing fibers (e.g. fiberglass) and thermoplastic fibers (e.g. polypropylene or polycarbonate) into a web. The web is heated to the melting point of the thermoplastic fibers while applying pressure, to eliminate air and press the web into a consolidated structure. Breakage of the reinforcing fibers is minimized by limiting the thickness of the web and limiting the pressure so as to produce a consolidated structure with minimal fiber breakage and a Notched Izod of at least one. Layered consolidated structures, some without reinforcing fibers, may be heated and pressed together to form a final structure having a thickness greater than the individual structures. The great majority of the fibers are provided so that the fibers of each type are within the range of about 0.5-5 inches. A sheet capable of replacing an automotive metal panel (that is having sufficiently high gloss, rigidity and impact characteristics) is provided, the sheet having Notched Izod of at least about two and preferably at least about five. Products with Notched Izods of up to eight or nine may be achieved.

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WO 88/09406 Dec. 1988.

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