The state stipulates that disposable paper cups "cannot artificially add fluorescent whitening agents". Disposable paper cups are divided into cold drink cups and hot drink cups according to their uses. Once misused or misused, it will affect the health of the body. The raw material for making the waterproof layer in the disposable paper cup is polyethylene. Inferior paper cups are made of recycled polyethylene, which will produce many substances harmful to the human body during the processing and production process. The paper cup is coated with a polyethylene water-proof film on the inside to achieve the water-proof effect.
The surface of the cold drink paper cup needs to be dipped or waxed to achieve the waterproof effect. After the water temperature exceeds 62 degrees, the stability of the wax is weakened, and the paper cup becomes soft. Among them, substances that may cause cancer will be ingested by the human body along with the water. The surface of the hot drink cup is pasted with a special polyethylene film recognized by the state, which has good heat resistance and is non-toxic.
In addition, there are also specified standards for the thickness and permeability of disposable paper cups. The bottom and sides of the water cup cannot seep water or water, and the paper cannot be too soft.
