POROUS SOUND ABSORBING MATERIAL AND METHOD OF MANUFACTURING THE MATERIAL

摘要

A method of surely manufacturing a porous sound absorbing material having low weight and excellent heat resistance enough to be used for the exhaust nozzle of a jet engine, high sound absorbing effect on the noise in wide band from the jet engine, and stable performance without a variation in porosity, comprising the step of forming a frame of the aggregate (5) having pores (6).