Try not to use disposable paper cups for boiling water. In order to prevent water penetration, the inner wall of the paper cup is coated with a thin layer of wax. If the water temperature exceeds 40℃, this layer of wax will melt. Therefore, do not fill the paper cup with water above 40℃. The paper cups produced by regular manufacturers use food-grade wax to coat the inner wall of the paper cup. Therefore, even if the water temperature is too high, the wax on the inner wall of the paper cup will dissolve, and there is no safety problem. However, some illegal processing plants use low-cost industrial paraffin to coat the inner wall of paper cups. The industrial paraffin contains harmful substances such as benzene and polycyclic aromatic hydrocarbons, which can damage the human nervous system and hematopoietic system. Therefore, you must choose paper cups produced by regular manufacturers when buying.
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