该产品是日本株式会社有沢制作所新近开发的。市场上的玻璃布层压板的玻璃含量一般在70％以下,最大为75％,而该层压板的玻璃含量在85～87％(体积比为72.8～76％),所使用的树脂为环氧树脂,BT树脂等等。通常的层压板使用的玻璃布为经纬纱交织的平纹布,由于纱的粗细及产量的关系使 This product is newly developed by Nihon Keizai Co., Ltd. The glass cloth laminate on the market generally has a glass content of less than 70% and a maximum of 75%, and the laminate has a glass content of 85 to 87% (volume ratio of 72.8 to 76%). The resin used is epoxy Resin, BT resin and so on. A typical glass cloth used for laminates is a plain weave interwoven with warp and weft yarns. Due to the relationship between the thickness of the yarns and the yield,