Various mixtures of raw rubber are delivered in coils.
Rubber is provided with bearing foil; then it is cut into strips of required dimensions.
The strips are then inserted into vulcanisation jigs.
Production of loudspeaker rings with the help of rubber vulcanisation takes place in 33 injection moulding machines at a temperature of up to 200 degrees centigrade.
100% visual check, together with complex measurement and testing in a two-shift operation, guarantees top quality.