Flexibles gedrucktes Substrat

A flexible printed substrate is constituted of metallic foil and provided thereon a polyimide layer which is produced by forming a film of a polyamic acid varnish on the metallic foil, followed by imidating. The polyimide layer has a linear expansion coefficient of 10x10 to 30x 10 (1/K) and a soften...

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Bibliographische Detailangaben
Hauptverfasser:	KUDO, NORIAKI, NAGASHIMA, MINORU
Format:	Patent
Sprache:	ger
Schlagworte:	CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CHEMISTRY COMPOSITIONS BASED THEREON ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PRINTED CIRCUITS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING
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Beschreibung
Zusammenfassung:	A flexible printed substrate is constituted of metallic foil and provided thereon a polyimide layer which is produced by forming a film of a polyamic acid varnish on the metallic foil, followed by imidating. The polyimide layer has a linear expansion coefficient of 10x10 to 30x 10 (1/K) and a softening point not more than the imidation temperature.