Patent ID: 8551282
Filing Date: 2013-10-08
Classification: B32B,F23C,Y10T

Abstract:
1. A heating system for hot coupling or laminating at least two PVC films or PVC thin sheets that are dragged by at least one moving support, said heating system comprising at least a heater group comprising at least: a burner fed with a combustive agent and a fuel, and a chamber delimited by a radiating internal face and a non-radiating external face, wherein said burner comprises at least one combustion head generating an aeriform flow at temperature of combustion fumes that is directed towards said chamber and heats its radiating internal face and wherein said radiating internal face faces said at least one moving support so that a heating volume is defined between said radiating internal face and said at least one moving support through which said at least two films or thin sheets pass and are heated up to their hot coupling temperature by the heat released by said radiating internal face, wherein said chamber is an airtight chamber, wherein said combustion fumes are confined to said airtight chamber until ventilated so as to prevent said combustion fumes from entering the heating volume and the environment where said system is operated, further comprising at least a connecting pipe connecting said heater group to a forced combustion fumes suction plant that, through said at least one connecting pipe, ventilates said combustion fumes and puts said airtight chamber under depression so to maintain the flames ignited.