PRODUCING POLYURETHANE FOAM

摘要

A method of producing polyurethane foam slab by allowing a urethane foam stock solution in a tank (21) to expand in a reduced pressure. The flatness of the top of the polyurethane foam is secured by providing a lifting jig (22) or a plate within the tank (21), or by rotating the tank (21). An apparatus for carrying out the method is also provided.