| 摘要 |
<p>Electric coils, particularly concentric coils for electric machines, are impregnated with solvent-free synthetic resins, e.g. unsaturated polyester resins or epoy or polyurethane resins, which harden on addition of catalysts. The coils are dipped in the resin and hardener with their supports and are rotated horizontally during the setting process.</p> |
