MANUFACTURE OF WOUND CORE

PURPOSE:To contrive the simplification of a manufacturing process and the reduction of a manufacturing cost by rewinding a required length tape like magnetic core material to a product shape after the insulating treatment of the material in a required shape winding. CONSTITUTION:A tape like magnetic core material 1 of such as an amorphous magnetic alloy thin plate is wound is a circular shape within only a required length. The tape like magnetic core material 1 is put in a dipping bath 4 filled with a liquid insulating material 3, the insulating material 3 is infiltrated in the whole of the tape like magnetic core material 1 and especially, between the layers and an insulating layer 5 is formed in these regions. In this case, there are closely adhered regions and minute gap regions of mutual contact adjacent layers between the layers due to the recession and the projection of outer surface unevenness based on the structure of the amorphous alloy thin plate itself and the rewinding process for a product is carried out.