We often use paper cups to greet our guests in our lives. But do you know that paper cups have a shelf life?
 Recently, a 7-year-old girl from Jiaxing, Zhejiang province, has had symptoms such as inflammation of her throat, coughing, red eyes, etc. because she uses expired disposable paper cups to drink water. Everyone can't help wondering whether food, medicine, etc. have a shelf life. Does a disposable cup have a shelf life?

The production date and shelf life are now printed on disposable cups sold in general supermarkets. The shelf life of different paper cups is also different. Some paper cups have a shelf life of up to 5 years. The quality of disposable cups on the market is uneven, and most households are not properly preserved, making the cup vulnerable to mildew and mildew, causing the growth of bacteria and fungi. This time, if used, it will cause some harm to the human body, it is easy to cause respiratory tract Diseases, etc. When consumers drink water on weekdays, it is best to use household cups and use disposable cups. When going out to play, try to bring a portable kettle, not only to drink water, peace of mind, but also environmentally friendly.

How to buy a qualified paper cup?

one look. First of all, to see whether the information marked on the package is complete, whether the production license number and the QS logo are marked. Secondly, the printed pattern on the outside of a good paper cup has a clear outline, uniform color, and no obvious stain. The cups of the qualified cups shall not have a printed pattern within 15 mm from the cup body and 10 mm from the cup body. Third, pay attention to the production date and shelf life.

Two pressures. Gently squeeze on both sides of the paper cup to roughly know the quality of the cup. Generally high-quality paper cups can hold water for 72 hours without leakage, and poor quality half-hours will seep.

Three smells. Smell paper cups have no pungent odors, especially the taste of the ink or moldy smell, do not generally buy odors.