Title:
テトラフルオロエチレンコアシェルコポリマーから形成された高密度物品、及びその製造方法
Document Type and Number:
Japanese Patent JP6445700
Kind Code:
B2
Abstract:
A dense article that includes a dense TFE copolymer film is provided. The dense TFE copolymer film includes a first endotherm between about 50° C. and about 300° C., a second endotherm between about 320° C. and about 350° C., and a third endotherm between about 350° C. and about 400° C. To form the dense article, a core shell TFE copolymer is formed into a pellet, ram extruded into a tape, dried into a dried preform, and then stretched into a dense TFE copolymer film that exhibits improved physical and mechanical properties. The dense TFE copolymer film is produced directly from the dried preform at a deformation temperature less than about 335° C. and without increasing the porosity of the dried preform, as would conventionally be done in expansion processes. The dense TFE copolymer films have a methane permeability less than about 20 μg*micron/cm2/min. The dense articles have a void volume less than about 20%.
More Like This:
Inventors:
Lawrence A. Ford
Michael E. Kennedy
Shaoff on Run
Todd S. Sailor
Gregory Jay Schaffer
Michael E. Kennedy
Shaoff on Run
Todd S. Sailor
Gregory Jay Schaffer
Application Number:
JP2017533296A
Publication Date:
December 26, 2018
Filing Date:
December 03, 2015
Export Citation:
Assignee:
W.L. GORE & ASSOCIATES, INCORPORATED
W.L. GORE & ASSOCIATES, GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
W.L. GORE & ASSOCIATES, GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
International Classes:
C08F214/26; B32B27/30; C08F259/08; C08J5/18
Domestic Patent References:
| JP2012520920A | ||||
| JP2010540749A | ||||
| JP8505094A | ||||
| JP2127509A | ||||
| JP2011183814A |
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Masatoshi Takahashi
Satoshi Deno
Naori Kota
Naohisa Akashi
Takashi Ishida
Tetsuji Koga
Masatoshi Takahashi
Satoshi Deno
Naori Kota
Naohisa Akashi