DEVELOPMENT OF A FOAMING TECHNOLOGY TO PRODUCE POLYURETHANE MOLDED FOAM PARTS USING C02 AS BLOWING AGENT

摘要

The existing technologies to foam polyurethane (PU) in a discontinuous molding process show all several disadvantages regarding to the achievable foam properties. At the Institute of Plastics Processing (IKV) a physical foaming process has been developed that allows to foam PU molded parts using C02 as a blowing agent. Two different methods which enable a controlled dissolving process of CO2 out of the reaction mixture and con-sequently a homogenous cell structure have been investigated.