Patent ID: 7867607

Claim:
A polyolefin fiber comprising: no more than 5 wt % of hydrophilic additive; no more than 3 wt % of titanium dioxide (TiO2); and no more than 1 wt % of spin finish provided over a surface thereof, wherein the spin finish comprises: (i) 70 to 85 wt % of one or more non-ionic surfactants selected from the group consisting of polyethylene polypropylene glycol monobutyl ether, polyoxyethylene sorbitan trioleate, and polyoxyethylene ester oleate; (ii) 5 to 15 wt % of anion antistatic agents including polyoxyethylene alkyl phosphate which contains an alkyl group having 8 to 18 carbon atoms and of which phosphate is one or more selected from the group consisting of a sodium salt, a potassium salt, a triethylamine salt, and a monoethylamine salt; and (iii) 5 to 15 wt % of one or more non-silicon antifoaming agents selected from the group consisting of polyoxyalkylene glycol, poly (oxyethylene, oxypropylene) alkyl ether, poly (oxyethylene, oxypropylene) glycol copolymer, and polyoxyalkylene triol.