Method of manufacturing a substrate for a floor panel

A method for manufacturing a single- or multi-layered substrate, which is suitable for a floor panel, wherein, for forming a substrate layer, thermoplastic material is strewn onto a transport device, and the strewn thermoplastic material is consolidated under an influence of pressure and/or heat in a press device, wherein the thermoplastic material to be strewn comprises micronized material;

• wherein the micronized material comprises 12 phr or less than 12 phr of plasticizer;
• wherein the strewn thermoplastic material is foamed and to this aim the thermoplastic material to be strewn comprises the micronized material and a blowing agent;
• wherein the thermoplastic material to be strewn is a mixture of at least the micronized material and a dryblend material with the blowing agent;
• wherein the dryblend material shows one or more of the following characteristics:
• the dryblend material comprises PVC with a K (Fikentscher) value of maximum 60;
• the dryblend material comprises a vinyl chloride-vinyl acetate, which has a K (Fikentscher) value of maximum 60 or maximum 58;
• the dryblend material comprises E-PVC.