With the rapid development of the economy, disposable paper cups, as a kind of life necessities, have become an indispensable daily necessities for families, restaurants, offices and other places. Its changeable shape, bright color and the characteristic of not afraid of wrestling are loved by many people. At present, the paper cups sold in the market are generally made of single-layer paper in the structural design. Generally, the strength of the paper cups is low. After the hot water is filled, the cup body is easy to deform, and the poor heat insulation effect is not antiskid. The following editor introduces the function of the double-layer paper cup.