A method of making high efficiency, flame resistant polyimide foam insulation particularly suitable for insulating plastic pipes and forming ducts. Typically a sheet of polyimide foam which has been foamed unconstrained is placed between opposed caul plates, squeezed to a thickness less than the original...http://www.google.es/patents/US4874648?utm_source=gb-gplus-sharePatente US4874648 - Method of making flame resistant polyimide foam insulation and the resulting insulation
Method of making flame resistant polyimide foam insulation and the resulting ...
