公开(公告)号：WO2015031591A1

公开(公告)日：2015-03-05

申请号：PCT/US2014/053118

申请日：2014-08-28

Applicant: TELEFLEX MEDICAL INCORPORATED

Inventor： OLSON, James R. ,  CHEN, Jiunn-yow ,  DINSMORE, Dean ,  WALLACE, Jeffrey

IPC: D01F6/12

CPC classification number: A61B17/06166 ,  A61B90/92 ,  A61B2017/00964 ,  A61L17/04 ,  B29C35/10 ,  B29C47/0014 ,  B29C47/0016 ,  B29C47/0038 ,  B29C47/0057 ,  B29C47/06 ,  B29C47/062 ,  B29C47/064 ,  B29C47/8805 ,  B29C47/94 ,  B29K2027/18 ,  B29K2105/007 ,  B29K2105/246 ,  B29K2105/251 ,  B29K2223/0683 ,  B29L2031/753 ,  C08L27/18 ,  D01D5/247 ,  D01D10/02 ,  D01F6/12 ,  D01F8/10

Abstract: 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.

Abstract translation: 公开了一种用于制造扩展的，可选择的多组分和/或着色的PTFE单丝的方法。 该方法包括通过将PTFE粉末与烃溶剂混合形成第一浆料; 通过将第一糊料压制成形式来形成挤出预成型体; 通过将挤出预制件暴露于第一温度持续第一时间来固化挤出预制件; 通过将第一浆料挤出通过模头形成绿色单丝; 通过将绿色单丝暴露于第二温度持续第二时间来扩展绿色单丝，第二持续时间在第一持续时间之后发生; 基本上沿着绿色单丝的纵轴拉伸绿色单丝，拉伸绿色单丝膨胀后发生的绿色单丝; 并在拉伸绿色单丝之后烧结绿色单丝。