INCOMBUSIBLE SOUNDPROOFING MATERIAL AND SOUNDPROOFING USING THE SAME INCOMBUSIBLE SOUNDPROOFING MATERIAL

摘要

PURPOSE:To naturally prevent the subject soundproofing material itself from catching fire even by the action of flames on an occasion of a fire and also to prevent collapse thereof satisfactorily in that case. CONSTITUTION:A glass cloth having 40g/m<2> surface density, a mineral fiber mat having 550g/m<2> surface density and a glass cloth having 40g/m<2> surface density are placed on a mold in layers in order, and then subjected to compression molding at 120 deg.C and 3kg/cm<2> for 50sec to be united into one body, thus obtaining the objective soundproofing material.