Sheet material especially useful for circuit boards

Details Sheet material especially useful for circuit boards Sheet material especially useful for circuit boards

2005-08-16

2005-08-16

Lam, Cathy F. (Department: 1775)

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

C428S297400, C428S297700, C428S901000, C174S258000, C174S259000

Reexamination Certificate

active

06929848

ABSTRACT:
A sheet comprising thermoplastic polymer (TP) and short high tensile modulus fibers, in which the concentration of TP in the middle of the sheet is higher than at the surface of the sheet, useful for making prepregs with a thermoset resin.

REFERENCES:
patent: 4895752 (1990-01-01), McEwen
patent: 5196259 (1993-03-01), Pierini et al.
patent: 6368698 (2002-04-01), Rokman et al.
patent: 2002/0153111 (2002-10-01), Kamada
patent: WO 88/04165 (1988-06-01), None
Derwent Publication Ltd., JP 53 111369, Nitto Electric Ind., Co. Sep. 28, 1978, Abstract.
Derwent Publication Ltd., JP 08 252372, Toray Ind. Inc., Oct. 3, 1955, Abstract.

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