Abstract: A composite material for producing an acoustic membrane, wherein the composite material comprises a silicone layer comprising an at least partially uncured silicone rubber and a support layer, wherein the support layer is adjacent to the silicone layer, as well as a method of preparing such a composite material and a process for producing an acoustic membrane from such a composite material.

Abstract: Acoustic membrane (100) comprising at least three layers with a first outer layer (101) and a second outer layer (102), wherein the first and the second outer layer (101, 102) are formed by a thermoplastic elastomer, wherein the thermoplastic elastomer forming the first outer layer and the thermoplastic elastomer forming the second outer layer are independently from each other selected from the group consisting of polyester elastomers, co-polyester elastomers, styrene block copolymers, elastic co-polyamides, thermoplastic silicones, and elastomeric polyolefins, preferably co-polyester elastomers.

Abstract: The invention relates to a method for producing a film for a loudspeaker diaphragm or a microphone diaphragm from a thermoplastic elastomer and is characterized in that a thermoplastic elastomer is shaped to a film by extrusion.