Monoaxially stretch shaped article of...

Details Monoaxially stretch shaped article of... Monoaxially stretch shaped article of...

B - Operations, Transporting

29

C

18/1043

B29C 55/00 (2006.01) B29C 55/06 (2006.01) C08J 5/18 (2006.01) D01F 6/12 (2006.01)

Patent

CA 2013122

ABSTRACT OF THE DISCLOSURE: To produce a monoaxially stretched shaped article of polytetrafluoroethylene (PTFE), a pasty mass containing PTFE powder is continuously shaped to a shaped body, which is fed over a plurality of rollers or rolls, heated and stretched. The shaped body is heated to a temperature of between 327 and 450°C prior to stretching strain, it is sintered simultaneously and is then stretched. This process allows for the production of a monoaxially stretched shaped article of PTFE which has strength values in the stretching direction of at least 500 N/mm2 and a density of between 1.80 and 2.30 g/cm3.

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