MANUFACTURING METHOD FOR ACOUSTIC FOAM

摘要

The present invention relates to a manufacturing method for acoustic foam, more specifically to a manufacturing method for acoustic foam including resin foam containing opened and closed cells, which is characterized by including a step of physically blowing up the closed cells by applying impact to one or both sides of the acoustic foam in a contact or non-contact manner. The manufacturing method according to the present invention may improve shock absorption, mechanical strength, workability, heat insulation, and noise blocking/dispersion of the acoustic foam.