PU sponge is PU, namely polyurethane. Soft foam is processed through certain process, which is mainly used for decoration such as seat cushion and mattress. Its pyrolytic temperature is generally 255 degrees Celsius, which has good elasticity, pressure has good recovery ability.
PE is the abbreviation of polyethylene, which is a kind of thermoplastic resin produced by ethylene polymerization. PE sponge is rarely used.