MONOAXIAL VERSTRECKTER FORMKÖRPER AUS POLYTETRAFLUORÄTHYLEN
For the production of a monoaxially stretched shaped article of polytetrafluoroethylene (PTFE), a pasty composition containing PTFE powder is worked continuously into a moulding, which is passed over a plurality of rollers or rolls, is heated and stretched, the moulding being heated before applying...
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Main Authors | , , , |
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Format | Patent |
Language | German |
Published |
15.07.1995
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Edition | 6 |
Subjects | |
Online Access | Get full text |
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Summary: | For the production of a monoaxially stretched shaped article of polytetrafluoroethylene (PTFE), a pasty composition containing PTFE powder is worked continuously into a moulding, which is passed over a plurality of rollers or rolls, is heated and stretched, the moulding being heated before applying the stretching tension to a temperature of between 327 and 450 DEG C, preferably between 350 and 390 DEG C, is thereby sintered and then stretched.
This process allows the production of a monoaxially stretched shaped article of polytetrafluoroethylene (PTFE) having strength values in the direction of stretching of at least 500 N/mm , preferably at least 700 N/mm , and a density of between 1.80 and 2.30 g/cm . |
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Bibliography: | Application Number: AT19900890096T |