Hot drink paper cups are usually coated with inner film or coated with inner film. When in use, they will be matched with paper cup covers and plastic cup covers so as to facilitate customers to hold the cups without scalding.
 

Cold drink paper cups are usually double coated, with a small amount of inner coated.  Ice cubes are usually added to cold drinks. Even if ice is removed, the drinks themselves will have a lower temperature than the outside, which will form condensation on the outer side of the paper cup. A single coated paper cup will cause the paper of the cup to become soft due to excessive water absorption, thus affecting the customer experience.Therefore, most cold drink paper cups will consider the use of double film.

The outer side of the paper cup is covered with film and condensed, and matched with appropriate paper cup patterns, so that the viewing effect is better. Please refer to the cola cups of several major western fast foods in China.