A layer of wax in a Single wall paper cup can prevent paper from absorbing water. Paper cups are divided into two types: cold drink cups and hot drink cups. If you often use cold drink cups to pack hot drinks, it will do great harm to people's health. The surface of the cold drink paper cup has been treated by spraying or dipping wax, which is very safe at 0~5℃, but as long as the temperature of water exceeds 62℃, the wax will melt and the paper cup will absorb water and deform.
The content of impurities in melted paraffin wax is high, especially the polycyclic aromatic hydrocarbon organic compounds contained in it are possible carcinogenic substances, which enter the human body with drinks, and a special film will be stuck on the surface of hot drinking paper cups, which is not only heat resistant, but also non-toxic. Therefore, it is recommended that you remember to classify disposable paper cups when purchasing and using them.
In addition, paper cups should be stored in a ventilated, cool, dry and pollution-free space, and the storage period should not exceed 2 years from the production date.
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