Flame-proof flexible printed circuit board

Details Flame-proof flexible printed circuit board Flame-proof flexible printed circuit board

1978-08-28

1982-01-19

Smith, John D.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

174 685, 427 40, 427 96, 428458, 428461, 428463, 428901, 428921, H05K 100

Patent

active

043117490

ABSTRACT:
A flexible printed circuit board having excellent flame proofness and a very little danger of causing a fire can be produced by subjecting a substrate or an insulating film consisting of a flexible resin film to surface treatment to provide a surface tension of 36 dyne/cm or more and then forming a resin film containing a flame retardant on the treated surface of said substrate or insulating film.

REFERENCES:
patent: 3534147 (1970-10-01), Bratton et al.
patent: 4027063 (1977-05-01), Fujiwara et al.
patent: 4054720 (1977-10-01), Tomita et al.
patent: 4136225 (1979-01-01), Feit
patent: 4140831 (1979-02-01), Miller

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