Patent ID: 7597924
Filing Date: 2009-10-06
Classification: A61L,B05D,B29C,B29K,B29L,C08J

Abstract:
1. A method for modifying an ePTFE surface, comprising: providing an ePTFE material in a chamber suitable for plasma treatment; providing a continuous low energy plasma discharge onto the ePTFE material; applying high voltage pulses of short duration to form a high energy ion flux from the plasma discharge to generate ions which form free radials on the surface of the ePTEE material; dosing the ions onto the ePTFE material at about 10 carburizing the ePTFE material to a depth of about 30 nm to about 500 nm to define a modified ePTFE surface without destroying the node and fibril structure of the ePTFE material below the modified ePTFE surface.