Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – Autogenously or by activation of dry coated particles
Patent
1995-06-06
1999-09-21
Timm, Catherine
Plastic and nonmetallic article shaping or treating: processes
Forming articles by uniting randomly associated particles
Autogenously or by activation of dry coated particles
2642888, B29C 4700, C08J 900, G09B 206, G09B 224
Patent
active
059550163
ABSTRACT:
A method of forming a vascular prosthetic structure, including steps of: mixing polytetrafluoroethylene resin with graphite powder to create a mixture; compacting the mixture to form a preform; extruding the preform to form an extrudate, expanding the extrudate to form an expanded structure having a plurality of irregularly spaced nodes interconnected by fibrils; and sintering the expanded structure to form the vascular prosthetic structure.
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