METHOD FOR PRODUCING FLEXIBLE TO SEMI-RIGID,INTEGRAL SKIN POLYURETHANE FOAMS

摘要

The invention relates to a method for producing soft to medium-hard polyurethane moulded bodies having thickened border areas of a given hardnes s and a markedly softer core, which bodies are called structural foams, in whi ch physical foaming agents from the C6-hydrocarbon series are used.