Paper cup raw materials

Inferior paper cups use recycled polyethylene, which will produce cracking changes during reprocessing and produce many harmful compounds, which are more likely to migrate into water during use. Professor Zhang Qinfa, an expert in food packaging materials at the School of Food Science of South China Agricultural University, once pointed out that in order to achieve water-proof effect in the production of paper cups, a polyethylene water-proof film will be coated on the inner wall. Polyethylene is the safest chemical substance in food processing.

However, if the selected material is not good or the processing technology is not enough, the polyethylene may be oxidized to a carbonyl compound during the process of hot-melting or applying to the paper cup. Carbonyl compounds are not easily volatile at room temperature, but when hot water is poured into paper cups, they may volatilize, so people will smell strange. From a general theoretical analysis, long-term intake of this organic compound must be harmful to the human body.