MODE OF FLAT MATERIAL TREATMENT BY HIGH-FREQUENCY HEATING AND APPARATUS FOR CARRYING OUT THIS MODE

摘要

DD--95458 A Treating laminar material e.g. synthetic leather, using HF energy, in which superimposed sheets of the same or different thermoplastic are lightly pressed by an edge of an HF welding/cutting tool against an electrode, the power is switched on to weld at this pressure, then the power is switched off and higher pressure applied to cut the welded sheets.