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AssigneesL'Air Liquide, Societe Anonyme A' Directolre et Conseil de Surveillance pour l'Etude Et. l'Exploitation des Procedes Georges Claude, SOFTAL Electronic Erik Blumentfeld GmbH Co
InventorsPanayotis Cocolios, Francois Coeuret, Franck Forster, Jean-Louis Gelot, Bernd Martens, Eckhard Prinz, Geraldine Rames-Langlade, Alain Villermet
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The invention concerns a method for the surface treatment of polymeric substrates whereby the substrate is subjected to a dielectric barrier electrical discharge, in a gaseous mixture comprising a carrier gas, and a reducing and/or oxidising gas, at a pressure substantially equal to atmospheric pressure. The invention is characterised in that it comprises the following implementing conditions: when the mixture comprises an oxidising gas, the oxidising gas content in the mixture ranges between 50 to 2000 ppm by volume; when the mixture comprises a reducing gas, the reducing gas content in the mixture ranges between 50 to 30000 ppm by volume.
A method for surface treatment of polymer substrates, in which the substrate is subjected to an electrical discharge with dielectric barrier, in a treatment gas mixture containing a carrier gas and a reducing gas and/or an oxidizing gas, at a pressure approximately equal to atmospheric pressure, characterized by the use of the following arrangements:
The surface treatment method as claimed in one of the preceding claims, characterized in that the polymer is a polyolefin, a vinyl polymer, a polystyrene, a polyester, a polyamide or a polycarbonate.
The surface treatment method as claimed in one of the preceding claims, characterized in that said carrier gas is an inert gas.
Dependencies are inferred from the claim text.