Patent ID: 8181438

Claim:
A composite fishing line with a net negative buoyancy in water, said fishing line comprising: (a) a first line component consisting essentially of a first yarn of filaments made of ultrahigh molecular weight, high tenacity, polyolefin filaments, and (b) a second line component comprising a second yarn or a monofilament selected from the group consisting of: (A) partially-oriented filament yarns comprising partially oriented (i) poly(trimethylene terephthalate) yarn, (ii) poly(trimethylene terephthalate)/poly(alpha-hydroxy acid) biconstituent filaments, (iii) polyethylene terephthalate, (iv) nylon, (v) polyamides and copolymers of polyamides, or (vi) polyvinylidene fluoride; (B) poly(tetrafluoroethylene); and (C) expanded poly(tetrafluoroethylene), said second line component exhibiting a specific gravity of greater than 1.0, wherein said composite fishing line has been re-drawn by stretching said composite fishing line under tension and heat at conditions sufficient to increase tenacity of the resulting fishing line by at least 10% relative to its tenacity before the stretching.