The hottest plastic food packaging is harmful to c

The raw material of plastic products is polycarbonate, which contains different concentrations of heavy metals. The state has strict regulations on which are industrial grade and which can be used for food packaging

Dong Jinshi said that the polycarbonate produced is undoubtedly industrial grade, with a high content of harmful substances. It is illegal to use it to make food containers such as milk bottles. In addition, there is a substance called bisphenol A in toxic milk bottles in the territory of the people's Republic of China, which is much higher than qualified products. It is mainly used to increase transparency (a lot of buttons are used). Studies in the United States have pointed out that bisphenol A may cause abnormal development of children's reproductive system and brain

in addition, the safety and hygiene requirements of raw materials are low, which is likely to mix with other industrial plastics and even medical waste in the production process, causing bacterial pollution. Dong Jinshi also said that the test found that the low molecular compounds in the toxic milk bottle would dissolve even at room temperature of 20 ℃, causing damage to children's respiratory tract, lungs and other organs. In order to reduce costs, talc powder, calcium carbonate and other materials will be added to the waste in the processing process, which contain a lot of heavy metals such as lead and cadmium. Babies use such milk to time the loading time. If they drink milk in a bottle for a long time, it will have a great impact on intellectual development. Three ways to distinguish milk is that the displacement of the rod assembly moves in a linear relationship with the load. Bottle quality Dong Jinshi said that the materials of milk bottles mainly include glass and plastic, and plastic milk bottles now account for the majority in the market. Specifically speaking of the selection of plastic milk bottles, he proposed three identification criteria. One "smell". Safe and qualified milk bottles should not have any pungent smell. If there is, it must be unqualified products. Second, "look". Mr. Dong said that qualified milk bottles should have uniform luster and regular texture on plastic. Inferior milk bottles not only contain impurities in the plastic, but also have uneven gloss. Finally, we should distinguish the quality of the bottle and "touch". High quality milk bottles feel smooth and hard. Poor quality milk bottles feel sticky and astringent, and they will sink when pinched. By stopping the three-layer screening of the oil pump motor, we can identify the quality of the milk bottle, avoid using inferior milk bottles, and protect the child's body from harm