Fluoropolymer working

Details Fluoropolymer working Fluoropolymer working

B - Operations, Transporting

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B29C 67/04 (2006.01) B29C 55/00 (2006.01) B29C 67/20 (2006.01) C08J 5/18 (2006.01) C08J 9/24 (2006.01) H01B 3/44 (2006.01) H01B 19/02 (2006.01)

Patent

CA 1316312

64506-219 FLUOROPOLYMER WORKING ABSTRACT OF THE DISCLOSURE A method of making porous, elongated objects such as ribbon, foil, solid or hollow sections, from a fluoropolymer powder or from a polymer blend which includes such fluoropolymer and a lubricant, is compressed or compacted, and paste extruded, is continued by passing the extruded object continuously through a furnace for drying the same, thereby removing the lubricant; and concurrently sintering the product at an elevated temperature above the crystallite melting temperature (342 degrees centigrade) of the fluoropolymer, while simultaneously and concurrently stretching the product longitudinally, laterally, or both, preferably in the range of 100 to 1000% stretch rate.

530184

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