The hottest polycarbonate milk bottle has caused c

2022-08-24
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Polycarbonate milk bottles cause cancer controversy again

recently, researchers from an environmental protection organization in the United States found that all of these milk bottles contain the chemical "bisphenol a", which may cause cancer, after analyzing some kinds of products in five popular plastic milk bottles of local Avent, Dr Browns, Playtex, Evenflo and Gerber. At present, these brands of milk bottles are sold in many large shopping malls in Beijing. So, what is bisphenol A? Can bisphenol a really cause cancer? Are there many disputes among all parties? What is the final conclusion of this matter, such as the impact absorption energy, impact toughness, the rotation angle of the pendulum and the printing of the experimental report? AVENT SA, one of the baby bottle manufacturers found to contain the carcinogen bisphenol A, responded to the incident after a mother contacted the company and issued a statement on the company's website. They believe that polycarbonate has been used in the manufacturing of baby bottles for 30 years. Research has proved that this material is very safe. Bisphenol A, which is referred to in the "consumption report", was released after the bottle was soaked in boiling water for 30 minutes, but the release of this substance was not found in normal use. This matter has also caused a strong debate in American academia. At present, there is no report that the sales of these products in the U.S. market is affected by the fact that the price of the alternating experimental box is generally more than 20% higher than that of the constant experimental box. As the local attention to the milk bottle incident in the United States then spread to China, such products have also attracted the attention of Chinese consumers

controversial milk bottles are sold in Beijing market, and plastic milk bottles account for 60% of the whole market.

in the infant supplies area of Beijing shuang'an shopping mall, we found the shelf of the "new Anyi" brand. The products of this brand not only include baby bottles and pacifiers, but also dozens of plastic products such as lunch boxes specially for baby food. The salesperson of the brand confirmed to that he had not received any notice from the relevant departments to take the product off the shelves. A salesperson said that there are many kinds of milk bottles in major shopping malls. The price ranges from more than ten yuan to hundreds of yuan. Among these products, the number of feeding bottles reached about 60% according to the force measurement range of the experimental machine. In particular, the packaging of expensive plastic milk bottles will make it clear that bengiyat regards them as key challenges and opportunities, indicating "high temperature resistance, safe use below 120 degrees Celsius", "steam sterilization allowed", "not easy to damage" and other words

bisphenol A is an irreplaceable raw material at present. Are many products containing bisphenol A

plastic milk bottles really toxic? Liushansheng, deputy director of the National Center for quality supervision and inspection of plastic products, told senior engineer that bisphenol A (BPA) is one of the most widely used industrial compounds in the world. Plastic products in our daily life are made of polymer materials, which are polymerized from low molecular materials and monomers. Bisphenol A is a monomer, which is used to polymerize polycarbonate, epoxy resin and other polymer materials. It is a key material for manufacturing hard and transparent polycarbonate plastics, including baby bottles, water bottles, other food and beverage containers. Bisphenol A cannot be replaced in the manufacturing process of these materials, just like making wooden furniture. If you don't use wood, it can't be called wooden furniture at all

polycarbonate (PC) polymerized from bisphenol A, which is often referred to as resin, is colorless, transparent, durable, lightweight and outstanding impact resistance. At present, it is very useful in the manufacture of baby bottles and other goods, otherwise the bottle would not have these characteristics

reprinted from: Beijing Science and technology

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