CONE PAPER FOR SPEAKER

摘要

The vibration plate for a speaker is prepared by (a) coating the paper matrix with the polymeric viscoelastic material based terpolymer film composed of ethylene, ethylene acrylate and maleic anhydride, and (b) coating the surface of the polymeric viscoelastic material layer with ceramics or inorganic-organic composites containing the inorganic filler such as metallic powder, carbon, graphite, mica and a coloring agent etc. by sol-gel method.