| 摘要 |
PURPOSE:To prevent a magnetic shield and an eddy current generation by integrating a metal foil through a resin-impregnated base material with a dustlike iron and/or iron alloy coupling board. CONSTITUTION:A metal foil is arranged integrally through a resin impregnated base material with a dustlike iron, iron alloy coupling board. The dustlike iron, iron alloy coupling board uses adding and mixing binder of thermoplastic resin or the like having 0.1-10wt.% of powderlike, particular, acicular iron, molybdenum permalloy iron powder, iron Al-Si alloy powder having 1-90microns of particle size, and pressure molding it in a plate shape having 0.1-10mm of thickness. The base material is obtained by impregnating a base material of woven cloth made of inorganic, organic synthetic or natural fiber with phenol resin. cresol resin, etc. A metal foil made solely of 0.018-0.07mm thick copper, aluminium, iron, Ni, zinc or their alloy, composite material, etc., is laminated integrally with a dustlike iron, iron alloy coupling plate through the resin- impregnated base material by pressing, rolls, double belts, etc. |
