METHOD FOR MODIFYING SURFACE OF FLUORORESIN FILM

PURPOSE: To provide a method for modifying the surface of the fluororesin film to impart excellent adhesiveness to the surface, by applying a high electric voltage to the fluororesin film under specific conditions to generate corona discharge. CONSTITUTION: The method for modifying the surface of th...

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Hauptverfasser:	SUGAWARA YASUHISA, AKUTSU KENSUKE, KAGA MAKOTO, IWATA AKINORI, OTSU TAKAHITO
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	PURPOSE: To provide a method for modifying the surface of the fluororesin film to impart excellent adhesiveness to the surface, by applying a high electric voltage to the fluororesin film under specific conditions to generate corona discharge. CONSTITUTION: The method for modifying the surface of the fluororesin film comprises disposing the film of a fluororesin such as ethylene-tetrafluorethylene copolymer, polyvinyl fluoride, tetrafluoroethylene-perfluoroethylene copolymer, and tetrafluoroethylene-hexafluoropropylene copolymer between a discharge electrode and a counter-electrode, and subsequently applying a high electric voltage having an average electrolytic strength of 40-200KV/cm, a pulse width of 1-50μmS, and a pulse frequency of 10-150pps to generate a corona discharge. Thus, the surface-modified film having a contact angle of