Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1992-09-17
1994-12-20
Ryan, Patrick J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428212, 4284735, 428901, B32B 900
Patent
active
053744691
ABSTRACT:
A flexible printed substrate imparted with an adhesive property for loading on an external substrate, a double printed substrate having formed on both surfaces thereof a metal layer or a wiring circuit, and a multilayer substrate having a multilayer structure are disclosed. The flexible printed substrate comprises an insulating resin layer comprising a low-linear expansion polyimide resin layer and a thermoplastic polyimide resin layer, and a metal layer or a wiring circuit formed on the low-linear expansion polyimide resin layer of the insulating resin layer, wherein a mixed region of the polyimide resin components is formed in the interface between the low-linear expansion polyimide resin layer and the thermoplastic polyimide resin layer.
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Printed Circuits Handbook, Coombs ed., 1988 pp. 7.1-7.2.
Higashi Kazumi
Hino Atsushi
Kaneto Masayuki
Maeda Masako
Mochizuki Amane
Jewik Patrick R.
Nitto Denko Corporation
Ryan Patrick J.
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