Plastic food packaging bags do great harm to health

    Use plastic food packaging to pack food for direct consumption. It is better not to use colored plastic bags. There are two reasons: firstly, the pigments used for dyeing plastic bags have strong permeability and volatility, and are easy to exude when oil is heated; if organic dyes are used, they will also contain aromatic hydrocarbons. Secondly, many non-ferrous plastic bags are made of recycled plastics. Because of the large amount of impurities in recycled plastics, manufacturers have to add pigments to cover them up.

    How to detect non-toxic sensory organs in plastic bags: non-toxic plastic bags are milky white, translucent, or colorless transparent, flexible, feel lubricated, and waxy on the surface; toxic plastic bags are opaque or yellowish in color, and feel sticky.

    Water detection method: placing plastic bags in water and pressing them into the water bottom, the proportion of non-toxic plastic bags is small and can float out of the water surface. The proportion of toxic plastic bags is large and sinks.

    Shake detection method: Hold one end of plastic bag by hand and shake hard. Those who make clear and crisp sound are non-toxic; those whose voice is stuffy are poisonous.

    Fire detection method: non-toxic polyethylene plastic bags are flammable, the flame is blue, the upper end is yellow, when burning, it drips like candle tears, has paraffin odor, less smoke; toxic polyvinyl chloride plastic bags are non-flammable, extinguish immediately after fire, the flame is yellow, the bottom is green, softening can draw wire, and have the irritating smell of hydrochloric acid.