Abstract: A process for the production of thick synthetic resin sheets having a multicolor pattern, involves processing heated thermoplastic chips into a coherent sheet by means of a pair of rolls profiled to a depth of about 0.1-0.5 mm which effect partially differing densification.

Abstract: A process for the continuous manufacture of sheeting from thermoplastic synthetic resins includes the steps of applying thermoplastic synthetic resin, in the form of particles, such as shreds, crumbs, cuttings, pieces, chips, or the like, continuously as a sheet-like layer of raw material to a moving support; passing the raw material layer through a heating zone to thereby preheat the material layer to a temperature approximately in the range from 100.degree. to 140.degree. C.; pressing the preheated material layer continuously over its full area during travel through a treatment zone so that, in a first phase, the raw material layer is compacted and welded under the effect of a pressure of from about 10 to 60 kp/cm.sup.2 and at the same time the material layer is heated to a temperature in the range from about 160.degree. to 220.degree.