Solid state drawing a filled polymer composition to a stable...

Details Solid state drawing a filled polymer composition to a stable... Solid state drawing a filled polymer composition to a stable...

B - Operations, Transporting

29

C

B29C 55/30 (2006.01)

Patent

CA 2669461

Draw a polymer composition by providing a polymer composition containing an orientable polymer having a softening temperature and a filler; conditioning the temperature of the polymer composition at or below its softening temperature; and drawing the polymer composition at a draw rate of at least 127 centimeters per minute in order to achieve an oriented filled polymer composition demonstrating a stable extent of cavitation with draw rate.

L'invention concerne un procédé d'étirage d'une composition polymère qui consiste à obtenir une composition polymère contenant un polymère orientable ayant une certaine température de ramollissement et une charge, porter la composition polymère à une température égale ou inférieure à sa température de ramollissement, et étirer la composition polymère à une vitesse d'étirage d'au moins 127 centimètres par minute afin d'obtenir une composition polymère chargée orientée présentant une valeur stable de la cavitation avec la vitesse d'étirage.

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