Patent ID: 6656401
Filing Date: 2003-12-02
Classification: B05D,B29C,B29L,B32B,D21H

Abstract:
A method for extrusion coating multiple webs in an extruder system containing multiple extrusion stations comprising:feeding a first web and a second web into a first extrusion station in the extruder system, each web having a coating side and an underside, the webs being arranged one with respect to each other to form a temporary composite wherein the respective undersides of the webs face each other and their respective coating sides face outwardly, away from each other; extruding a first polymer coating on the coating side of the first web of the composite at the first extrusion station; feeding the composite to a second extrusion station following extrusion of the first polymer coating thereon; extruding a second polymer coating on the coating side of the second web of the composite at the second extrusion station; and separating the extrusion coated first and second webs of the composite.