PC-marked bisphenol A at the bottom of the cup, which can be precipitated at high temperatures. Excessive intake is harmful to the body. PP cups should be selected for plastic cups; experts say that they should be selected according to their use.
Southeast Network September 9 (Straits Daily reporter Gao Xin) In recent days, a question entitled "Pick plastic cups, do not select the bottom of the cup with a PC logo!" Microblogging attracted users hot discussion. The microblogging said that buying plastic cups should be printed with the PP logo, the PC logo plastic cup contains bisphenol A, can be precipitated at high temperatures, there is a similar role of hormones, excessive intake will interfere with hormone function, even when severely excessive May cause cancer. Experts said that if it is only used at room temperature, the choice of PC or PP material is not much different, but the PC material plastic cup is best not to install high temperature water.
Fuzhou Market: Two Materials Half Cups
Yesterday, the reporter went to Fuzhou Yonghui, Wal-Mart, Carrefour and several other supermarkets. The reporter found that various supermarkets sell plastic cups of various styles, priced from a few yuan to tens of yuan. The reporter carefully examined the bottom of these plastic cups and found that nearly half of the cups were made of PC and the other half was PP.
The reporter asked, what is the difference between plastic cups of different materials? Several supermarket sales staff have stated that these cups are drop-resistant and easy to carry and are in compliance with relevant standards and can be purchased with ease. As for the difference between the two, they said it was not clear.
The reporter then went to the Licheng Ancient Street Commodity Wholesale Market and discovered that the wholesale plastic cup here is also a PC and PP material that “evenly divides the world”. Most shopkeepers said that the difference between the two materials is not clear, only one wholesale shop owner told reporters, "At high temperatures, plastic cups of PC material may have harmful substances dissolved into the water."
Experts: The best selection of high temperature water PP material
Professor Zhang Zhang of Material Science and Engineering of Fujian University of Technology told the reporter that PC is an abbreviation for Polycarbonate and PP is a Polypropylene Resin. Both of these materials are widely used in the manufacturing process of plastic cups and other items. "Because of the high temperature resistance, wear resistance, and impact resistance of PC materials, this material is widely used in products including kettles and plastic cups."
In response to the saying that "PC cup made of PC material will precipitate bisphenol A at high temperature," Professor Zhang agreed. He explained that when choosing a plastic cup, it is best to use the product clearly and distinguish between normal temperature and high temperature. If it is used at room temperature, choose PC material or PP material cup is not a big problem, but PC material plastic cup is best not to install high temperature water. “Although the PC has better mechanical properties, it is suspected that unsafe substances will precipitate at high temperatures. The PP material is non-toxic plastic and its properties are stable even at high temperatures.”
