Fluororesin film of high mechanical strength

A fluororesin film, which has a dielectric constant of at most 5, and which has a tensile break strength of at least 40 MPa in each of MD direction and TD direction; a fluororesin film, wherein the ratio of the tensile break strength in each of MD and TD directions after stretching to the tensile br...

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Bibliographische Detailangaben
Hauptverfasser:	JITSUGIRI, YUKIO, HIGUCHI, YOSHIAKI
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CHEMISTRY COMPOSITIONS BASED THEREON ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERAL PROCESSES OF COMPOUNDING GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PRINTED CIRCUITS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS 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:	A fluororesin film, which has a dielectric constant of at most 5, and which has a tensile break strength of at least 40 MPa in each of MD direction and TD direction; a fluororesin film, wherein the ratio of the tensile break strength in each of MD and TD directions after stretching to the tensile break strength in each of MD and TD directions before stretching, is at least 1.5; and a fluororesin film, which has a tensile modulus of at least 3,000 MPa in each of MD and TD directions. The above-mentioned fluororesin films are obtained by using a method of biaxially stretching laminates of corresponding raw fabric films and readily stretchable films.