Cover film for flexible printed circuit board and flexible printed circuit board

According to one aspect of the present disclosure, a cover film for a flexible printed circuit board includes: an adhesive layer; and a protective layer that is layered on a surface of the adhesive layer, wherein a lamination temperature range in which a ratio of a viscosity of the protective layer...

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Bibliographische Detailangaben
Hauptverfasser:	Hitotsumatsu, Takuma, Kashihara, Hideki
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY FILLING PASTES INKS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES PRINTED CIRCUITS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS AS ADHESIVES USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	According to one aspect of the present disclosure, a cover film for a flexible printed circuit board includes: an adhesive layer; and a protective layer that is layered on a surface of the adhesive layer, wherein a lamination temperature range in which a ratio of a viscosity of the protective layer to a viscosity of the adhesive layer is five times or more is present within a temperature range of 50° C. or more and 150° C. or less.