Novel porous PTFE membranes are described possessing a unique combination of high strength, low flow resistance, and small pore size. Additionally, unique constructions with superior filtration and venting properties incorporating porous PTFE membranes are described....http://www.google.es/patents/US7306729?utm_source=gb-gplus-sharePatente US7306729 - Porous PTFE materials and articles produced therefrom
Porous PTFE materials and articles produced therefrom
