Patent ID: 6299727
Filing Date: 2001-10-09
Classification: B32B,C04B,D21H,E04B,Y02W,Y10T

Abstract:
An incombustible sound-absorbing electric radiation-absorbing ceiling panel having a thickness of from 1 mm to 30 mm obtained by subjecting a water-dispersed slurry of a mixture of from 67 to 92 wt-5 of a rock wool, from 0.5 to 8 wt-% of a beaten pulp, from 2 to 13 wt-% of a binder made of an organic resin, from 0.15 to 1 wt-% of a flocculating agent, from 0.5 to 10 wt-% of a natural mineral fiber and from 0.02 to 1 wt-% of carbon, said carbon being in the form carbon fibers having a fiber length of from 1 mm to 30 mm to wet paper making.