Films, layers, tapes, plates and similar structures of metal or plastic materials coated with thin polyfluorocarbon films

摘要

The invention relates to films, layers, tapes, plates and similar structures of metal or plastic materials coated with thin polyfluorocarbon films and being characterized in that no other materials are interposed. The polyfluoro­carbon films are adherent and not porous and have controlled wettability characteristics.;The polyfluorocarbons have the formula (CF₂)_n, wherein x has a value of from 0.3 to 2.0 and are directly obtained on the substrate by plasma polymerisation of gaseous streams of C₂F₆ and H₂, C₂F₆ and C₂F₄, CF₄ and H₂, CF₄ and C₂F₄ or C₂F₄.;The metal substrate can, for example, be Al, Cu, Fe, tin-­coated Fe, Si, noble metals and alloys. The plastic sub­strates can, for example, be polytetrafluoroethylene, poly­propylene, polyethylene, polyphenylene oxide, polycarbonate and neoprene.