A sheet or pad of sound deadening material comprising(a) a polymeric component free of bitumen or asphalt suchas a natural or synthetic rubber, PVC, chlorinatedpolyethylene or ethylene vinyl acetate copolymer; (b) afiller such as calcium carbonate, barytes, talc,magnesium carbonate or silica; (c) a compatibilisingagent such as ricinoleic acid; and a tackifier such aspine rosin. Formulations may include a flame retardant, apolar additive, a polymer anti-oxidant, a heat stabilizerfor PVC and a lubricant. Methods for forming such sheetsor pads and for applying such sheets or pads to a metalpanel are also provided.
展开▼
