To maintain the fixed sound insulating performance and mechanical performance of a sound insulation-vibration control material formed of a natural rubber as a main material for a residence floor, and moreover to sharply reduce its manufacturing cost.
A compound mainly composed of a natural rubber; a rubber component including nonbutylene rubber system reclaimed rubber, nonbutylene rubber system powder rubber, and nonbutylene system synthetic rubber as an optional component; an olefin system resin; and inorganic filler is melted and kneaded at a temperature above the fusing temperature of the rubber and olefin system resin to make the olefin resin invade into the structure of rubber molecule for forming a kneaded material kept in a polymer alloy state, and it is previously formed into a sheet-shape and then formed into a shape where a surface density is more than 4.8 kg/m2 and thickness is more than 4 mm, and a drawing process is carried out on one or both faces according to a wish.
KAWAKAMI TORU
HASEGAWA YASUYUKI
FUJIWARA GIICHI
DAIKEN TRADE & INDUSTRY
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