By using property of separating out water at high temperature for polyvinyl alcohol formaldehyde solution, kaolin and light calcium carbonate can be directly added, and technique is simplified.
在制备方法上利用聚乙烯醇缩甲醛溶液高温析水的性质，直接加入高岭土、轻质碳酸钙制胶，简化了工艺。
2
Said cup liner features light weight, low cost and capable of substituting for kaolin to make the liner of the thermal insulation cup.