| 摘要 |
PURPOSE:To obtain the insulated coil of simple manufacturing operation having superior mechanical, electrical and thermal characteristics by a method wherein after a polyamide paper being made to contain a synthetic resin dispersion liquid is wound around a coil conductor, formation is performed by heating with pressure. CONSTITUTION:The synthetic resin like polyester resin, epoxyester resin, polyester imide resin or polyester amide imide resin, etc., is pulverized by a jet mill, etc., to form the particle having the average diameter of 100mum or less, for example, and thus obtained powder is made to disperse uniformly in water containing an anionic or a cationic surface active agent, and thus obtained dispersion liquid is made to be contained in a glass fiber. After the coil conductor is wound around with the polyamide paper made by mixing thus obtained wet paper type glass fiber, it is inserted in a metal mold to form by heating with pressure. Accordingly the insulated coil having superior electrical, mechanical and thermal characteristics can be obtained. |
