Membrane for electroacoustic converter systems

Details Membrane for electroacoustic converter systems Membrane for electroacoustic converter systems

H - Electricity

04

R

349/72

H04R 7/00 (2006.01) G10K 13/00 (2006.01) H04R 7/10 (2006.01) H04R 9/06 (2006.01)

Patent

CA 1050156

Abstract of the Disclosure A membrane for an electroacoustic converter system comprises a multi-layer body at least one layer of which is viscoelastic and has a low retractile elasticity. This layer has an almost constant maximum damping factor over a temperature range of more than 10°C. The body has at least one layer of foil having a modulus of elasticity of more than 10,000 kg/cm2. The viscoelastic material may be a graft-type polymer and the foil may be a poly- ester, polycarbonate or polyvinylfluoride film. This provision of the foil layer increases the temperature range in which maximum dampening is exhibited without detracting from the mechanical strength of the membrane.

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