Plastic acoustic material and methods of manufacturing thereof

摘要

A method of manufacturing plastic acoustic material including transforming plastic precursor material into plastic granules, filling a mold with the granules while forming air pockets between the granules in the mold, heating the mold, thereby at least partially melting the granules in the mold, and cooling the mold, thereby allowing the at least partially melted granules to solidify around the air pockets and thereby forming the plastic acoustic material.