Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1989-08-24
1991-01-15
Ryan, Patrick J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428413, 428414, 428418, 428457, 428463, 428901, 361397, 361398, B32B 900
Patent
active
049852949
ABSTRACT:
Composite films for use in printed wiring boards are comprised of an insulating layer and a copper foil laminated thereover, the insulating layer being made up predominantly of a selected epoxy resin and a selected acrylonitrile-butadiene rubber, whereby voidlessness, thickness uniformity and insulation adjustment are enhanced. Also disclosed is a method of producing a printed wiring board using the film by a subtractive process.
REFERENCES:
patent: 4152477 (1979-05-01), Haruta et al.
patent: 4212912 (1980-07-01), Wartusch et al.
patent: 4353954 (1982-10-01), Yamaoka et al.
patent: 4444848 (1984-04-01), Shanefield et al.
patent: 4837086 (1989-06-01), Takahashi et al.
Wakamatsu Hiroyuki
Watanabe Hideo
Yamazaki Hajime
Ryan Patrick J.
The Yokohama Rubber Co. Ltd.
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