Paper cup raw materials of paper cup packaging machine

The paper cup of the paper cup packaging machine uses polyethylene as the raw material of the paper cup packaging machine. The poor quality paper cup of the paper cup packaging machine will produce cracking changes in the reprocessing process, resulting in many harmful compounds, which are easier to migrate to water in use. Professor zhangqinfa, 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 layer of polyethylene water-proof film will be coated on the inner wall. However, if the selected material is not good or the processing technology is not qualified, the polyethylene may be oxidized to carbonyl compounds during the process of hot melting or coating on the paper cup. Carbonyl compounds are not easy to volatilize at room temperature, but they may volatilize when hot water is poured into a paper cup, so people will smell strange smell. From the general theoretical analysis, long-term intake of this compound must be harmful to the human body.

The general raw materials of the paper cups of the paper cup packaging machine are: Food wood pulp paper + food PE film. The paper cup of the paper cup packaging machine is divided into cold drink cup, hot drink cup and yogurt cup according to the purpose. Cold drink cup, as the name suggests, is a paper cup that can hold cold drinks. Cold drinks have a feature that they need to be frozen or refrigerated. The service temperature is 0 ℃ -5 ℃. This determines that the paper cup can be waterproof as a whole. Therefore, the body of the cold drink cup is made of food wood pulp paper + PE film on the inner and outer surfaces. This can prevent wood pulp paper from losing its original stiffness and toughness due to contact with moisture.