PRODUCTION OF SOUNDPROOFING MATERIAL COMPOSED OF INORGANIC FIBER

摘要

PURPOSE:To readily obtain the subject product free from a sharp edge part by molding an inorganic fiber fleece having an uncured thermosetting resin made to adhere thereto using a specified method, subsequently dies cutting the molded material and using one mold for both molding and trimming. CONSTITUTION:An inorganic fiber fleece having an uncured thermosetting resin made to adhere thereto is initially compression molded into a soundproofing material shape at a heated state using a mold equipped with a force-cutting blade at 150-250 deg.C and 0.2-20kg/cm<2> for 30-300 sec in general so that a thin-walled part may be left at the outer periphery part of the soundproofing material shape. The resultant molded material is then subjected to dies cutting into a soundproofing material shape at the thin-walled part. In addition, the thickness of the thin-walled part is preferably 0.2-1mm and the cutting pressure in dies cutting is preferably 5-250kg/cm.