关键词: 饮用水瓶盖, 专用树脂, 生产工艺, 性能指标

Abstract: Resin HDPE5603JP specially used for drinking water bottle cap is made from ethylene as the raw material, 1-butene as the comonomer and hydrogen as molecular weight regulator by means of slurry process. In the paper, the process route and production process of the product were introduced, and the analysis of comparison with similar products abroad was conducted. The processing test made by the company and the application showed that the mechanical and sanitary performances of the resin products could meet the national standards. All the indicators are up to the design requirements and meet the special requirements of the users for the smell and machinability of the product. The cap can replace similar foreign products and fill the domestic gap in the field.