Stampable thermoplastic sheet reinforced with multilength fiber

Details Stampable thermoplastic sheet reinforced with multilength fiber Stampable thermoplastic sheet reinforced with multilength fiber

1975-04-01

1977-08-23

McCamish, Marion E.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

156 622, 156244, 264 88, 264108, 264332, 264257, 264258, 264331, 428284, 428288, 428292, 428293, 428294, 428295, 428297, 428298, 428302, 428323, 428409, 428285, B32B 516

Patent

active

040441881

ABSTRACT:
Reinforced thermoplastic polymer composite sheets are formable into smooth, shaped objects in a rapid stamping process in a cool mold when pre-heated outside of the mold. The characterizing constituents of the composite sheet are: (1) thermoplastic resin, (2) relatively short reinforcing fibers, (3) relatively long or continuous glass fiber, and (4) a particulate loading agent. This four-component system, laminated together, produces sheets having excellent formability, mechanical properties, uniformity and in particular surface smoothness not heretofore obtainable, and are simple to fabricate continuously.

REFERENCES:
patent: 3121656 (1964-02-01), Gluck
patent: 3616196 (1971-10-01), Sun
patent: 3684645 (1972-08-01), Temple
patent: 3709773 (1973-01-01), Hall
patent: 3713962 (1973-01-01), Ackley
patent: 3770562 (1973-11-01), Newman

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