James R. Olson,Jiunn-Yow Chen,Dean Dinsmore,Jeffrey Wallace
申请号：
US15974247
公开号：
US20180250003A1
申请日:
2018.05.08
申请国别(地区):
US
年份:
2018
代理人:
摘要：
A method for making an expanded, and optionally multi-component and/or colored PTFE monofilament is disclosed. The method includes forming a first paste by mixing a PTFE powder with a hydrocarbon solvent； forming an extrusion preform by pressing the first paste into a form； curing the extrusion preform by exposing the extrusion preform to a first temperature for a first time duration； forming a green monofilament by extruding the first paste through a die； expanding the green monofilament by exposing the green monofilament to a second temperature for a second time duration, the second time duration occurring after the first time duration； stretching the green monofilament substantially along a longitudinal axis of the green monofilament, the stretching the green monofilament occurring after the expanding the green monofilament； and sintering the green monofilament after the stretching the green monofilament.
