METHOD FOR PRODUCING RELEASE FILM AND FIBER-REINFORCED PLASTIC

PROBLEM TO BE SOLVED: To provide a release film which is excellent in releasability and heat resistance and is capable of producing a fiber-reinforced plastic with high productivity and handleability even if a prepreg is pressure molded at a high temperature in a state of being interposed between th...

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Bibliographische Detailangaben
Hauptverfasser:	NISHIMURA KYO, ONOMICHI HIROSHI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a release film which is excellent in releasability and heat resistance and is capable of producing a fiber-reinforced plastic with high productivity and handleability even if a prepreg is pressure molded at a high temperature in a state of being interposed between the prepreg and a press surface.SOLUTION: A release layer of a release film is formed by a Calkylated melamine-formaldehyde resin and the centerline average roughness Ra of the surface is adjusted to be 0.012 to 2 μm. The release film further contains a base material layer and the release layer may be formed on at least one surface of the base material layer. The release layer has an average thickness of 0.2 to 5 μm and the base material layer may have an average thickness of 12 to 75 μm. The release film may be a release film for molding a fiber-reinforced plastic by hot-pressing a prepreg in a state of being interposed between the prepreg and a press surface.