B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 47/02 (2006.01) B05D 1/26 (2006.01) B29C 47/04 (2006.01) B29C 59/10 (2006.01) C08J 3/28 (2006.01) B29C 47/00 (2006.01)
Patent
CA 2084913
Abstract The invention describes a device and a process for producing extrusion-coated laminates. The extrusion device contains an extruder nozzle with nozzle lip, a cooling roller and a contact roller, wherein the cooling roller and the contact roller form a roller gap and the extruder nozzle is directed towards the roller gap. A melt of thermoplastic plastics, which enters the roller gap while forming a coating film and is joined to a substrate film in the roller gap, emerges from the nozzle lip. A device for improving the adhesion of the coating film to the substrate is thus disposed in the region between the extruder nozzle and the roller gap at a slight distance from the film. The device is a corona treatment station which has a discharge electrode at high voltage and an electrically earthed counter-electrode or a corona treatment station without a counter-electrode.
Alusuisse Technology & Management Ltd.
Softal Electronic Gmbh
Swabey Ogilvy Renault
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