ETHYLENE-TETRAFLUOROETHYLENE COPOLYMER FILM AND METHOD FOR PRODUCING SAME

To provide an ETFE film (3) which is unlikely to wrinkle when stretched and retracted, and a method for producing the same. It is an ethylene- tetrafluoroethylene copolymer film characterized in that the crystallinity obtained by the formula (1) from the peak area S20 in the vicinity of 2?=20?, the...

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Bibliographische Detailangaben
Hauptverfasser:	KASAI Wataru, KAWAHARA Kengo
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 MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS 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:	To provide an ETFE film (3) which is unlikely to wrinkle when stretched and retracted, and a method for producing the same. It is an ethylene- tetrafluoroethylene copolymer film characterized in that the crystallinity obtained by the formula (1) from the peak area S20 in the vicinity of 2?=20?, the peak area S19 in the vicinity of 2?=19? and the peak area S17 in the vicinity of 2?=17? in the diffraction intensity curve obtained by the X-ray diffraction method, is from 55 to 70%, and the proportion of the quasi-crystal layer obtained by the formula (2) is from 10 to 20%: crystallinity (%)=(S19+S2)/(S17+S19+S20)x100 (1) proportion of quasi-crystal layer (%)=S20/(S17+S19++S20)x100 (2).