Stampable sheet made of fiber-reinforced thermoplastic resin and

Details Stampable sheet made of fiber-reinforced thermoplastic resin and Stampable sheet made of fiber-reinforced thermoplastic resin and

1993-07-09

1996-07-30

Withers, James D.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428294, 428299, 428300, 428301, B32B 1500, B32B 506, B32B 522, D04H 302

Patent

active

055409865

ABSTRACT:
The invention relates to a stampable sheet made of fiber-reinforced thermoplastic resin whose reinforcement is a glass fiber mat in which a non-oriented fiber layer and a unidirectional fiber layer are mechanically intertwined with each other. In the stampable sheet made of the fiber-reinforced thermoplastic resin according to the invention, a content of the glass long-fiber bundles forming the unidirectional fiber layer, in the glass fiber mat is 20 wt % to 80 wt %, and the glass fiber mat, in which a significant amount of glass long-fiber bundles among the glass long-fiber bundles forming the unidirectional fiber layer or a significant amount of glass long-fibers in the glass long-fiber bundles forming the unidirectional fiber layer is substantially under a relaxation condition, is used in an amount of 20 wt %.about.55 wt %. A molded article comprising at least one stampable sheet is also part of the invention.

REFERENCES:
patent: 3664909 (1972-05-01), Ackley
patent: 4277531 (1981-07-01), Picone
patent: 4291084 (1981-09-01), Segal
patent: 4335176 (1982-06-01), Baumann
patent: 4692375 (1987-09-01), Neubauer et al.
patent: 4749613 (1988-06-01), Yamada et al.
patent: 4892772 (1990-01-01), Su
patent: 4916010 (1990-04-01), Yamana et al.

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