塑料包装虽然迄今还存在某些缺陷,但它在材料的选择、加工和装潢工艺、设计等范围内具有的许多优良性能,使它在盥洗用品和化妆品的包装方面不断开拓使用。这些用途包括薄膜、容器,以及刷子、盒子、盖子等。材料选择仍然主要是经济实用的四种,即:聚苯乙烯,聚乙烯(低、中、高密度),聚氯乙烯和聚丙烯(均聚物和共聚物)以及适应所选用途的其它材料。后者包括锦纶和乙缩醛(主要如按钮式喷雾器阀的 Although some of the shortcomings of plastic packaging have so far been found, plastic packaging has many excellent properties in the selection, processing and decorating processes of materials, design, etc., making it a pioneer in the packaging of toiletries and cosmetics. These uses include films, containers, and brushes, boxes, lids and the like. The choice of materials is still primarily four economical and practical, namely: polystyrene, polyethylene (low, medium and high density), polyvinyl chloride and polypropylene (homopolymers and copolymers) and other materials to suit the selected use . The latter includes nylon and acetal (mainly such as the button-type sprayer valve