Loading patent…
AssigneeOLBRICH GmbH
InventorsDirk ROBELING, Andre JOSTEN, Frans TE WELSCHER, Matthias HOLLSTEGGE
Estimating the term…
A method for manufacturing of a multilayer PVC semi-finished product, in particular a multilayer PVC synthetic leather or a multilayer PVC foam sheet, the method comprising the steps of: a. Coating a coated or uncoated carrier web with a PVC plastisol, whereby a carrier web coated with an ungelled plastisol layer is obtained; thereafter b. Gelling the ungelled plastisol layer, whereby a carrier web coated with a gelled plastisol layer is obtained; and thereafter c. Cooling the carrier web coated with the gelled plastisol layer; characterized in that the coating comprises coating the carrier web with at least two PVC plastisols one above the other, simultaneously or in immediate succession. A corresponding apparatus is further described.
A method for manufacturing a multilayer PVC semi-finished product (100), in particular a multilayer PVC synthetic leather or a multilayer PVC foam sheet, said method comprising:
An apparatus, preferably transfer coating apparatus, for the production of a multilayer PVC semi-finished product, in particular a multilayer PVC synthetic leather or a multilayer PVC foam film, the apparatus comprising at least one process stage sequence with a coating unit for coating a coated or uncoated carrier web with a PVC plastisol, a gelling unit adjoining the coating unit for gelling the PVC plastisol, and a cooling unit adjoining the gelling unit for cooling the carrier web coated with the gelled PVC plastisol, wherein the coating unit is configured for simultaneous or directly successive coating of the carrier web with at least two PVC plastisols one above the other. The apparatus according to claim 11, which has a multilayer slot nozzle (6) with at least two fluidically separated individual slots (5) for the simultaneous or directly successive coating of the carrier web (1) with at least two PVC plastisols (2, 3) one above the other.
The apparatus according to claim 12, wherein at least one of the individual slots has an adjustable slot width, preferably the slot widths of both individual slots being adjustable independently of each other.
The apparatus according to claim 12, wherein the slot width is between 50 and 1000 μm, preferably between 50 and 700 μm, and more preferably between 200 and 500 μm.
Dependencies are inferred from the claim text.