Whether you are still agonizing over how to choose the type of coating for the cup, you will be able to make a decision easily after reading the following content. Single coated paper cup refers to a layer of coated film inside the paper cup to isolate the contact between the paper cup and the liquid, which can improve the water resistance of the cup and avoid liquid leakage. Single-coated paper cups are usually used to hold hot drinks. Double coated paper cup refers to the inside and outside of the paper cup each has a layer of coating. When the temperature of the liquid in the cup is low, the wall of the cup comes into contact with the temperature of the air, and small droplets of water are formed on the surface. If the water stays for a long time, the cup will become soft and cannot be used normally. The coating inside and outside the cup to improve the water resistance of the cup wall is the principle of the double coating paper cup. Therefore, double coated paper cups are usually used to hold cold drinks.