加工类别：各种可以粉碎的干湿料物，三聚氰胺，聚乙烯醇，化工原料、石膏粉、皮类、粮食类、塑料类。
Processing category: Various dry and wet materials that could be crushed, including chemical raw materials, gesso powders, hulls, grains, and plastics.
本文论述了用机械发泡法制备聚乙烯醇缩甲醛泡沫塑料的工艺及其影响因素。
The preparation technology and its effect factors for polyvinyl formal foam plastic by way of mechanical foaming method were studied.
使用1,1,1,2 -四氟乙烷和醇作为发泡剂的挤塑乙烯基芳族泡沫塑料。
Extruded vinyl aromatic foam with 1, 1, 1, 2 - tetrafluoroethane and alcohol as blowing agent.
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