Expanded PTFE Articles and Method of Making Same
Unique PTFE structures comprising islands of PTFE attached to an underlying expanded polytetrafluoroethylene (ePTFE) structure and to methods of making such structures is disclosed. The ePTFE material may or may not have been exposed to amorphous locking temperatures. These unique structures exhibit islands of PTFE attached to and raised above the expanded PTFE structures.
1 . An article comprising:
a first PTFE material having a microstructure characterized by nodes interconnected by fibrils, and
islands of a second PTFE material on the surface of the first PTFE material,
wherein said article is in the form of a fishing line.
2 . The article of claim 1 , wherein said fishing line has a fishing line fray score of less than 100.
3 . The article of claim 1 wherein said fishing line comprises a monofilament fiber.
4 . The article of claim 1 wherein said fishing line comprises a multifilament fiber.
5 . The article of claim 1 , wherein said fishing line comprises twisted fiber.
6 . The article of claim 1 , wherein said fishing line has a density of at least 1.9 g/cc.
7 . A fishing line comprising PTFE having a fishing line fray score of less than 50.