Patent ID: 11850774

Abstract:
The disclosure relates to a method for producing an extruded sheet, which includes: a) providing calcium carbonate (CaCO3) powder; b) providing polyvinyl chloride (PVC) powder; c) providing additives as stabilisers; e) heating the mixture until the PVC softens to form a kneadable mass and the CaCO3 at least partially bonds to the PVC; f) cooling the mass; g) conveying the mass to an extruder; h) melting and extruding the mass by means of an extruder and moulding into a sheet by means of a slotted nozzle; i) pressing the still-warm sheet to a desired final thickness by means of at least two calendar rolls; and j) at least one layer of a pigmented lacquer is applied to the upper side; and k) an additional lacquer is applied to the pigmented lacquer to increase the scratch resistance.