Multicomponent polyurethane element mfr. - by first supplying part of the polyurethane mixt. to which is added additives, and then supplying the rest

摘要

Multi-component plastics elements are produced, esp. from polyurethane, by adding to part of the polyurethane mixt. the intended additives and following with the addition of the residual part of the polyurethane mixt. Floating of additives, such as particulare plastics waste, glass (fibres) or carminative agents, to the surface of the reacted polyurethane mixt. is prevented. Homogeneous mixing of components is possible.