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When milk is served with plastic bag, people tend to tear off the corner of the bag and drink the milk directly. However, the surface of the bag could be easily contaminated by germs, which means it is not safe and health to have direct contact with the surface of the bag when we are drinking the milk.
In the design of EZ-Drink Milkbag, there is a second bag layer inside the package, which provides a clean part for people to drink the milk.
Qingdao University of Sci. & Tech.
Jiangbo Liu Yanna Zhang Yapeng Zhang Zheng Wang