Process of making PTFE fibers

Details Process of making PTFE fibers Process of making PTFE fibers

1996-05-21

1997-11-11

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Autogenously or by activation of dry coated particles

2642108, 26421114, 26421115, 26421117, 264235, D01D 1002, D01F 612

Patent

active

056860331

ABSTRACT:
The present invention provides high strength fiber of polytetrafluoroethylene (PTFE) having a strength of at least 0.5 GPa, which is manufactured by forming a monofilament of PTFE group polymer by paste extrusion, free end annealing the monofilament, and subsequently drawing the annealed monofilament to form the fiber, wherein PTFE molecular chains are oriented in a direction parallel to an axial direction of the fiber.

REFERENCES:
patent: 2776465 (1957-01-01), Smith
patent: 2953428 (1960-09-01), Hunt et al.
patent: 4064214 (1977-12-01), Fitzgerald
patent: 5061561 (1991-10-01), Katayama
patent: 5167890 (1992-12-01), Sasshofer et al.

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