Insulating materials based on mica - Part 3: Specifications for individual materials - Sheet 5: Glass-backed mica paper with an epoxy resin binder for post-impregnation (VPI)
基于云母的绝缘材料 - 第3部分:各种材料的规格 - 第5页:用于后浸渍的环氧树脂粘合剂的玻璃背景云母纸(vpi)
This part of IEC 60371 gives requirements for electrical insulating materials made by combining mica paper with glass fabric and bonding them together with a small amount of epoxy resin.