Process for processing a conductive damper for use in speaker

A process for producing a conductive damper for use in a speaker, in the process a workpiece of the conductive damper in which knitted tinsel wires are integrated with a sheet-shaped workpiece is set between top and bottom molds, on a surface of each of which molds a plurality of corrugations are formed concentrically, then the workpiece of the conductive damper is pressed by the top and bottom molds so as to be molded in a damper-shape, the process comprising:

• a first step for setting the workpiece of the conductive damper on the bottom mold;
• a second step for moving the top mold in a direction toward the bottom mold so as to mold one corrugation or a plurality of corrugations at an inner part of the workpiece of the conductive damper;
• and
• a third step for further moving the top mold in the direction toward the bottom mold so as to mold one corrugation or a plurality of corrugations at an outer part of the workpiece of the conductive damper,
• wherein the third step is repeatedly performed so that the workpiece of the conductive damper is molded in the damper-shape.