Patent ID: 9260801
Filing Date: 2016-02-16
CPC Classification: A61L,D01F,D10B,Y02P,Y10T

Claim Text:
1. A process for removal of residual spin solvent from a gel spun ultrahigh molecular weight polyethylene (UHMwPE) filament comprising the steps of: (a) providing a gel spun UHMwPE filament having an effective diameter of above 16 μm and a residual spin solvent content of between 100 and 2000 ppm, (b) winding the gel spun UHMwPE filament provided by step (a) around a frame so that the filament is taut around the frame at a tension of more than 0.15 g/dtex, and subsequently (c) placing the frame with the filament wound taut therearound according to step (b) in an autoclave and removing residual spin solvent from the filament by subjecting the filament taut to super critical CO