Original title: Plastic lunch boxes also have a shelf life? Microwave heating should choose ceramic or glass utensils

Beijing, March 24 news according to the voice of China "Global Chinese broadcast network" reported that now more and more people are used to using plastic lunch boxes to bring meals to the company, the unit to eat with microwave oven heat. But do you know that the plastic products used in this microwave oven also have a "shelf life"?

The packaging box of our commonly used plastic fresh-keeping box is generally marked with the date of production, but it is rare to see a shelf life. Jiangsu Provincial Quality Inspection Institute engineer Mr. Xiang said, did not write does not mean no. We often feel that the plastic lunch box is difficult to wash after eating, or there is a dyeing situation after a period of time, that is to remind you: do not wash, it should be changed.

For plastic products have shelf life, many people have never heard of it. It is not only the Chinese people who have not heard of it. In foreign countries, such a statement is also rarely heard of. According to Lu, who lives in the United States, the plastic used in microwave ovens in the United States must be labeled with a certified label. When people see the label, they can use it with no warranty.

Yuan Lu: Plastic products in the United States are generally certified by the US FDA, that is, the Food and Drug Administration, which will put their registration marks on most of the products. For example, "microwave safe" means plastic products that can be used in microwave ovens, and "BPA" means that plastic products do not contain bisphenol A, a toxic substance that is often contained in plastic products. Consumers are more assured to buy plastic products, because they are more assured of the certification of the United States Food and Drug Administration, because its certification system is actually very rigorous, for example, it is affixed with a microwave oven safe use mark, which means that it is specific to the product, Based on the specific product may be in contact with the proportion of food, frequency and will be likely to heat a very precise test, and then according to the calculation of a value that may be harmful to human health, will issue a "microwave safe" mark. And the tests they do are based on the premise that the plastic product will last a lifetime, that is, there is no such thing as a plastic product that is safe to use for three years and is not safe after three years. Lu added that if the expiration date really mattered, American manufacturers would have indicated it on their products.

Yuan Lu: U.S. law requires more disclosure, even for things that are obvious, like hot water or slippery ground, that people might already know. If it's a plastic product with an expiration date, I think the business has to make that kind of disclosure. It's rare to see a plastic product with an expiration date here in the United States.

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