Process for flash-spinning dry polymeric plexifilamentary...

Details Process for flash-spinning dry polymeric plexifilamentary... Process for flash-spinning dry polymeric plexifilamentary...

C - Chemistry, Metallurgy

08

L

18/583, 18/586,

C08L 23/02 (2006.01) D01D 5/11 (2006.01) D01F 6/04 (2006.01)

Patent

CA 1335917

An improved process for flash-spinning plexifilamentary film-fibril strands from fiber-forming polyolefins is provided. A polyolefin is mixed to form a solution of 18 to 33 percent polyolefin by weight of the solution, 42 to 73 percent methylene chloride by weight of the solution and 9 to 25 percent carbon dioxide by weight of the solution. The mixture is then flash-spun into substantially dry plexifilamentary strands.

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