PREPREG AND ITS APPLICATION

PURPOSE:To prevent formation of micro-voids, enhance the dielectric constant, dielectric loss tangent, insulation resistance, etc., and improve the rate of dimension change by forming a first mixture layer, PTFE layer, and a second mixture layer one over another on a base made from a cloth. CONSTITU...

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Bibliographische Detailangaben
Hauptverfasser:	IWASAKI NAOTO, MOTOGAMI MITSURU, SHIBAGAKI KAZUYOSHI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CABLES CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CONDUCTORS ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY INSULATORS MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS PRINTED CIRCUITS SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES
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Beschreibung
Zusammenfassung:	PURPOSE:To prevent formation of micro-voids, enhance the dielectric constant, dielectric loss tangent, insulation resistance, etc., and improve the rate of dimension change by forming a first mixture layer, PTFE layer, and a second mixture layer one over another on a base made from a cloth. CONSTITUTION:On each side of a base 2 made from a cloth is formed a first mixture layer 3 consisting of PTFE and tetrafluoroethylene-hexafluoropropylene copolymer (FEP) and/or tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA), and thus a prepreg 1 is prepared. Over this first layer 3 is formed a polytetrafluoroethylene (PTFE) layer 4, and further thereover is formed a second hybrid laye 5 consisting of PTFE and FEP and/or PFA. Thereby the high attachment of the base 2 to fluoric resin is ensured to prevent formation of micro- voids, and also the dielectric constant, dielectric loss tangent, insulation resistance, etc., are enhanced and the rate of dimension change is improved.