High-strength, high-modulus, polymeric implants are produced from highly oriented monofilaments and/or films by solvent welding technique. This avoids loss of orientation, as well as thermal and oxidative degradation, which is the common case with the state of art techniques, namely melt extrusion,...http://www.google.co.uk/patents/US5728336?utm_source=gb-gplus-sharePatent US5728336 - High-strength, high-modulus, compound-filament or compound-film implant and method for producing it 
