Raw Materials For Disposable Soup Cups

Inferior paper cups use recycled polyethylene, which will undergo cracking changes during reprocessing, resulting in many harmful compounds, which are more likely to migrate to water during use. Professor Zhang Qinfa, an expert in food packaging materials from the School of Food Science of South China Agricultural University, once pointed out that in order to achieve the water barrier effect in the production of paper cups, a layer of polyethylene water barrier film will be coated on the inner wall. Polyethylene is the safest chemical in food processing. However, if the selected material is not good or the processing technology is not good enough, the polyethylene may be oxidized to carbonyl compounds during the process of hot melting or applying to paper cups. Carbonyl compounds are not easily volatile at room temperature, but may volatilize when hot water is poured into the paper cup, so people will smell strange. From a general theoretical analysis, long-term intake of this organic compound must be harmful to the human body.