05874032 is referenced by 21 patents and cites 11 patents.

An improved method is provided for extruding ePTFE tube (12) for use in medical applications. A tube (12) of PTFE is extruded, preferably in an extrusion process, using counter-rotated die components (22, 26). The die component (16) is maintained at a constant temperature during processing. The resulting green tube (12) has enhanced fibrous state formation in a direction perpendicular to the direction of extrusion. The PTFE green tube (12) is then subjected to secondary operations such as stretching and expansion to yield medical product. The ePTFE tube (12) structure is defined by nodes interconnected by elongate fibrils. Both the nodes and fibrils are substantially randomly tilted with respect to the longitudinal axis of the tube (12). This particular structure yields a tube (12) which exhibits a high degree of radial tear strength useful in medical applications.

Title
Method for manufacturing expanded polytetrafluoroethylene products
Application Number
209543
Publication Number
5874032
Application Date
April 15, 1996
Publication Date
February 23, 1999
Inventor
Edward J Dormier
Rockaway
NJ, US
David J Lentz
Randolph
NJ, US
Nick Popadiuk
Hillsborough
NJ, US
Richard J Zdrahala
Montville
NJ, US
Agent
Hoffmann & Baron
Assignee
Meadox Medicals
NJ, US
IPC
B29C 47/24
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