Polyurethane foam structure

摘要

Polyurethanes (PU) with surface recesses, especially PU foam, obtained by introducing a PU foam system into a mold or cavity, the surface of which is treated with substances (I) which influence the foam-forming process in such a way that depressions are formed in the surface of the foam around these substances. An Independent claim is also included for a process for the production of PU foam with surface indentations by pretreating the mould surface or the outer layer of the foam-production cavity with (I) as defined above.