公开(公告)号：US20190085107A1

公开(公告)日：2019-03-21

申请号：US16191768

申请日：2018-11-15

Applicant: AGC Inc.

Inventor： Wataru KASAI ,  Kengo Kawahara

IPC: C08F214/26 ,  C08F210/02

Abstract: To provide an ETFE film 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 obtainable by the formula (1) from the peak area S20 in the vicinity of 2θ=20°, the peak area S19 in the vicinity of 2θ=19° and the peak area S17 in the vicinity of 2θ=17° in the diffraction intensity curve obtainable by the X-ray diffraction method, is from 55 to 70%, and the proportion of the quasi-crystal layer obtainable by the formula (2) is from 10 to 20%: Crystallinity (%)=(S19+S20)/(S17+S19+S20)×100  (1) Proportion of quasi-crystal layer (%)=S20/(S17+S19+S20)×100  (2)

公开(公告)号：US10940629B2

公开(公告)日：2021-03-09

申请号：US16191768

申请日：2018-11-15

Applicant: AGC Inc.

Inventor： Wataru Kasai ,  Kengo Kawahara

IPC: B29C48/885 ,  C08J5/18 ,  B29C48/08 ,  B29C48/305 ,  B29C48/88 ,  C08F210/02 ,  C08F214/26 ,  B29K627/18 ,  B29K23/00 ,  B29K27/18 ,  B29L7/00 ,  C08L27/18 ,  C08L23/08 ,  B29C48/00 ,  B29K627/12

Abstract: To provide an ETFE film 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 2θ=20°, the peak area S19 in the vicinity of 2θ=19° and the peak area S17 in the vicinity of 2θ=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)×100  (1) proportion of quasi-crystal layer (%)=S20/(S17+S19++S20)×100  (2).