Process of making a fiber-reinforced plastic sheet having a grad

Details Process of making a fiber-reinforced plastic sheet having a grad Process of making a fiber-reinforced plastic sheet having a grad

1990-04-27

1992-04-28

Davis, Jenna L.

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Stratified or layered articles

19302, 19305, 28282, 83913, 156 622, 156 624, 156296, 264112, 264116, 264122, 264128, 428170, 428171, 428218, 428297, 428298, D04H 116, D01G 2500, D01D 1102, B27N 300

Patent

active

051086786

ABSTRACT:
This invention relates to a fiber reinforced plastic sheet having a gradient layer structure wherein the number of reinforcing fibers continuously varies and a process for producing the same by spreading a mixture of the fibers different in the number of filaments over the traveling zone of a conveyor and then pressing it while it contains a resin. The fiber reinforced plastic sheet of the invention is excellent in smooth appearance, fluidity during molding to an article, fiber filling ability into a complex form portion of an article and mechanical strength and can be produced inexpensively.

REFERENCES:
patent: 3760458 (1973-09-01), Pitt
patent: 4714647 (1987-12-01), Shipp, Jr. et al.

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