Imitation stone slabs comprising polyurethane foam filled with natural or synthetic powdered stone

摘要

The invention relates to a method for producing tiles (100) or shaped parts (200) consisting of polyurethane plastic foam. According to the invention, natural and/or artificial rock meal with a particle sieve size between 1.0 and 250 mu m is added to said polyurethane plastic foam. The constituents are reacted and caused to foam in a heatable mould, a temperature between 20 DEG C and 80 DEG C being maintained during this process. Through foaming, the mixture is exposed to a pressure between 2 MPa and 14 MPa in the mould until it reaches a density of between 80 kg/m<3> and 2000 kg/m<3>.