| 摘要 |
<p>A method for producing a laminated soft-magnetic sheet is provided by laminating thin soft-magnetic sheets produced by an application method. A change in sheet thickness can be suppressed and variations in the magnetic permeability are small. The method for manufacturing a laminated soft-magnetic sheet includes the step (A) of obtaining curable soft-magnetic sheets, each of the curable soft-magnetic sheets being produced by applying to a release base a soft-magnetic composition prepared by mixing at least a flat soft-magnetic powder, an acrylic rubber having a glycidyl group, an epoxy resin, a latent curing agent for the epoxy resin, and a solvent, drying the applied soft-magnetic composition at a temperature T1 at which curing reaction of the soft-magnetic composition does not substantially take place, and removing the release base; the step (B) of obtaining a laminate of the curable soft-magnetic sheets by laminating at least two of the curable soft-magnetic sheets; the step (C) of compressing the obtained laminate at a temperature T2 at which the curing reaction does not substantially take place, using a laminator for applying a linear pressure thereon while the linear pressure is sequentially changed from a linear pressure P1, to a linear pressure P2, and to a linear pressure P3 (wherein P1<P2<P3); and the step (D) of obtaining a laminated soft-magnetic sheet by compressing the compressed laminate at a temperature T3 at which the curing reaction takes place, using a press for applying surface pressure thereon to final cure the laminate.</p> |
