1.苯乙烯共聚物 NAS许多包装涉及美学——采用可爱的和有吸引力方面的材料。例如:Avon 喜欢使用的苯乙烯甲基丙烯酸甲酯,是由 Richardson 公司用 NAS 商标名供应的一种共聚物。Avon 化装品包装部门的购买代理商 Fr-ank Delauro 说:“我们规定我们的大多数乳白色和硬质玻璃瓶盖采用 NAS,因为只有苯乙烯共聚物提供良好的产品抗力而不具有内 1. Styrene Copolymer NAS Many packagings involve aesthetics - using both adorable and attractive materials. For example: Styrene methyl methacrylate, which Avon prefers to use, is a copolymer supplied by Richardson under the NAS brand name. Fr-ank Delauro, purchasing agent at Avon Cosmetics Packaging, said: "We specify that most of our milky and rigid glass caps use NAS because only styrenic copolymers provide good product resistance without inner