PC or PP for plastic cups?
PC polycarbonate, one of the most common plastics, is non-toxic, especially for bottles and space cups, and is controversial because it contains bisphenol A. In theory, as long as the bisphenol A one hundred percent was converted into plastic structure during the manufacture of PC, the product was completely free of bisphenol A and became less threatening to health. However, if a small amount of bisphenol A is not converted into a plastic structure of PC, it may be released into food or drink, threatening the health and safety of users, especially adolescents.
PP is the abbreviation of polypropylene, it has good heat resistance, products at temperatures above 100 DEG C for sterilization, without external conditions, 150 degrees is not deformation, is the most common use of plastic microwave oven. But a careful investigation will find on the market PC material products more often than PP material products sell expensive, customers often ran the more expensive the better quality "concept to choose, in fact, the price difference is because the market price is much higher than the 1 tons of PC 1 tons PP price. The relative ratio of the two materials will find that PP's wear resistance is somewhat worse than PC, so in the production of transparent cups, PC is generally used as material, and PC products are more beautiful than PP products. But from a safety point of view, the processing temperature of PP plastics is 180~240 degrees centigrade, so boiling water doesn't break it down, so PP is safer than PC.
Is it dangerous to put boiling water in a PC cup?
The bottom number is 7. The glass is made of polycarbonate, or PC. A general PC plastic cup can withstand the temperature of -30-140 degrees Celsius, but this is the physical properties of the material, but it is said that the material will not crack and melt when used at this temperature. But when we from the perspective of food safety will be found, with higher temperature, the residual bisphenol A PC will release more and faster. So the reason for the existence of PC health threat because it is in high temperature release of bisphenol A, bisphenol A that makes people "dreaded" exactly is where sacred? Bisphenol A (BPA) is often used in industrial synthesis of PC and epoxy resin materials. In modern industry, bisphenol A can be said to be ubiquitous, from mineral water bottles, medical devices to food packaging inside, have its shadow. Each year, the world produces nearly 27 million tons of bisphenol A plastics. Although it is very useful in industry, it is not harmful to humans. According to the study, bisphenol A can lead to endocrine disorders, and may even lead to obesity caused by cancer and metabolic disorders. The European Union believes that bisphenol A bottles will induce precocious puberty, and from March 2, 2011 onwards, the production of chemicals containing bisphenol A baby bottles. Therefore, under the conditions permit, it is best not to use PC material cup hot water, not to put in microwave oven heating.