(2) Technical requirements
③ The paper surface is delicate
When printing paper cups, it is required to control the surface roughness of the printing surface of the base paper or the surface to be printed after PE coating to meet the printing requirements of the paper cup surface.
④ High whiteness
On the premise of not using fluorescent agent, the base paper has equivalent paper whiteness CTP to ensure clear and bright printing patterns.
⑤ High security
Paper cups belong to food packaging materials and must meet the hygiene standards. Paper cup base paper and paper cup paper should be regularly sent to the local national health and epidemic prevention system for hygiene safety testing to ensure the safety of users.