Reinforced dielectric sheet

Details Reinforced dielectric sheet Reinforced dielectric sheet

1988-05-05

1989-08-15

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including sheet or component perpendicular to plane of web...

428195, 4283193, 428413, 428422, 428901, 174 36, 174117F, B32B 700

Patent

active

048573817

ABSTRACT:
A reinforced porous dielectric sheet of expanded polytetrafluoroethylene is provided wherein solid plastic reinforcement elements in the form of circular columns or wall-like partitions extending through the dielectric sheet from one surface to the other are distributed within the sheet. The reinforced sheet is useful as a substrate for printed circuit boards. The reinforcement elements are preferably of a tetrafluoroethylene/ethylene copolymer or an epoxy resin.

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patent: 4514450 (1985-04-01), Nowobilski et al.
patent: 4518737 (1985-05-01), Traut
patent: 4591659 (1986-05-01), Leibowitz
patent: 4639693 (1987-01-01), Suzuki et al.
patent: 4640866 (1987-02-01), Suzuki
patent: 4680220 (1987-07-01), Johnson

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