Flexible printed circuit board base material

Details Flexible printed circuit board base material Flexible printed circuit board base material

1987-04-13

1988-11-15

Herbert, Thomas J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428422, 4284735, 428901, B32B 1710

Patent

active

047849010

ABSTRACT:
A flexible base material for use in printed circuit boards is provided wherein a sheet of porous, expanded polytetrafluoroethylene is impregnated with a bismaleimide-triazine resin, and the resin is cured therein. The sheet may be laminated to a glass cloth and composites may be produced having a multiplicity of layers of such sheets and glass cloths.

REFERENCES:
patent: 3953566 (1976-04-01), Gore
patent: 4456712 (1984-06-01), Christie et al.
patent: 4526835 (1985-07-01), Takahashi et al.
patent: 4576861 (1986-03-01), Kato
patent: 4634631 (1987-01-01), Gazit et al.
patent: 4640866 (1987-02-01), Suzuki
patent: 4692369 (1987-09-01), Nomi
patent: 4701362 (1987-10-01), Suzuki et al.

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