Patent ID: 8426510

Claim:
A polyethylene melt spinning composition comprising an intimate blend of: I) a polyethylene portion comprising: a) about 50 to about 90 percent by weight of an ultra-high molecular weight polyethylene (UHMWPE) having an intrinsic viscosity of from about 6 to about 15 dl/g; and b) about 10 to about 50 percent by weight of a high density polyethylene (HDPE) having an intrinsic viscosity of from about 0.75 to about 3 dl/g, and II) about 0.1 to about 1 percent by weight of a material comprising quasi-spherical particles having a weight average particle size of from about 0.05 to about 10 micrometers and a Mohs' hardness of at least about 4, said particles comprising at least 50 percent by weight of inorganic non-metallic materials; wherein the polyethylene portion of said blend has an intrinsic viscosity of from about 2.4 to about 5 dl/g and a ratio of weight average to number average molecular weight of at least about 7, with all said intrinsic viscosities being measured in decalin at 135° C. by ASTM D1601-99.