CORONA DISCHARGE TREATMENT PROCESS FOR IMPROVING THE SURFACE ADHERENCE OF A POLYOLEFIN MOLDED PRODUCT

摘要

THE INVENTION CONCERNS A CORONA DISCHARGE PROCESS FOR IMPROVING THE SURFACE ADHERENCE OF A POLYOLEFIN MOLDED PRODUCT IN THE PROCESS ACCORDING TO THE INVENTION CORONA DISCHARGE IS APPLIED ON SAID SURFACE 6 IN CONTINUOUS MOVEMENT BETWEEN A DISCHARGE ELECTRODE 3 AND ANOTHER ELECTRODE OPPOSED TO IT, BY PROJECTING A JET OF A GASEOUS MATTER OTHER THAN THE AIR ITSELF ON THE PART OF THE SAME SURFACE TO WHICH THE APPLICATION IS APPLIED. CORONA DISCHARGE TO ACHIEVE THE FOLLOWING RELATIONSHIP BETWEEN THE NUMBER OF CARBON ATOMS, NITROGEN ATOMS AND OXYGEN ATOMS PRESENT IN 100 A OF THIS SURFACE: BR/ (CF DRAWING IN BOPI) IN WHICH C, N AND O ARE RESPECTIVELY THE NUMBER OF ATOMS OF CARBON, NITROGEN AND OXYGEN IN 100A OF THIS SURFACE BEFORE THE APPLICATION AND C, N AND O ARE RESPECTIVELY THE NUMBER OF ATOMS OF CARBON, NITROGEN AND OXYGEN IN 100 A OF THIS SURFACE AFTER APPLICATION, THE NUMBER OF CARBON ATOMS ALWAYS IS EQUAL TO 100. / P