Patent ID: 7945069
Filing Date: 2011-05-17
Classification: H04R

Abstract:
1. A loudspeaker cone comprising: a thermoplastic base material; and a filler distributed in the thermoplastic base material, where the filler comprises a phyllosilicate nanostructure material distributed in the thermoplastic base material, the phyllosilicate nanostructure material having a sheet structure that is less than about 10 the thermoplastic base material and the phyllosilicate nanostructure material forming a high flow composition having a weight percentage of phyllosilicate nanostructure material between about 4 weight percent and about 20weight percent and a viscosity shear rate ratio of 3 or greater for use in injection molding of thin walled loudspeaker cones, where the predetermined weight percentage is adjustable between about 4weight percent and about 20 weight percent to adjust a high frequency end of a pass band frequency response range in a loudspeaker in which the loudspeaker cones is to be installed and operated while maintaining the viscosity shear rate ratio of 3 or greater.