The microwaveable plastic lunch box is more and more favored by the “fast living” working family. Recently, the plastic lunch boxes widely spread on the Internet will release news of plasticizers, so many netizens and citizens dare not use plastic lunch boxes. The reporter learned that Plastic Products also have a shelf life, and there will be risks when they are used for extended periods. Reporters visited and found that many citizens, including lunch box sales staff, were unaware of this. For the use of plastic lunch boxes, the reporter went to the supermarkets in Gaomi City to learn more.
Different materials, different heat resistance
The reporter visited a number of stores in Gaomi City and saw that there are one or two kinds of microwave plastic lunch boxes sold in the market. Several brands of Plastic Tableware are said to be used for microwave oven heating. The single price is more than 10 yuan to 50 yuan. The use of temperature, use, and some only marked the use of temperature, no instructions for use. Although some of the items are marked with the date of production, they are not marked with a shelf life. Sales staff told reporters that the special plastic lunch boxes for microwave ovens can be heated at will, but they have not heard of the issue of shelf life. The reporter learned that each plastic has its heat-resisting limit. Among the materials for food use, the most heat-resistant material at present is polypropylene (PP) that can withstand 140°C, followed by polyethylene (PE) that can withstand 110°C. Polystyrene (PS) only heats up to 90°C. The reporter saw that the plastic lunch boxes in supermarkets are marked with PP or PE materials. If the temperature exceeds their heat-resisting limit, plasticizers may be released. Therefore, it should be avoided to heat the plastic lunch boxes for a long time with high temperatures. Food can be kept within 3 minutes.
Plastic "lifetime" generally 3 to 5 years
It is understood that plastic products also have a shelf life, expired plastic will be aging, there will be discoloration, embrittlement, such as the use of Plastic Containers found to be yellow or no longer transparent, should be replaced as soon as possible. “Plastic lunch boxes have been used for a long time. There will be irregularities and discoloration within the plastic lunch boxes. This is a sign of the end of the service life.” Mr. Cheng, who specializes in plastic products, told reporters. As for the "lifespan" of plastic lunch boxes, Mr. Zheng said that depending on personal use and cleaning methods, the shelf life of most plastic products is generally three to five years. If used frequently, one to two years will be better. At the same time, it is best to avoid using plastic lunch boxes to reheat hot oil or high sugar foods, because the boiling point of the oil is higher than 100 °C easily exceed the plastic limit of heat, while oil and sugar and plasticizers are organic, similar dissolve.
Capping heating is conducive to the release of toxic substances
According to experts, to avoid the use of abrasive cleaning liquid or cleaning cloth for cleaning, in order to avoid scratching the plastic box, the release of unknown substances. “It is often the case that a plastic lunch box is difficult to wash after use, or if dyeing occurs after a certain period of time.” In this case, coupled with the high temperature of the catalyst, the plasticizer may be released into the food. Some lunch boxes are made of PP, which is a good material. The lid may be made of a little material. Opening the lid can prevent the toxic substances in the lid from being released by heat. At the same time, if the box body also has toxic substances released, the lid heating can let toxic substances released into the air.
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Triple C International (ShenZhen) Co.,Ltd. was established in 2018. It`s a professional foreign trade company engaged in import and export trade, and carries out business operations such as international trade, cooperative production and intermediary trade. The company mainly provides high-quality OEM-product and ODM-product services for customs in Japan, Southeast Asia, Europe and Unite States, and has a professional technical team that provides hundreds of OEM-product services for dozens of customers, and has dozens of excellent suppliers. The company mainly provides sewing products, plastic products, paper products, wooden products, household products and other OEM services, including handbags, gift boxes, Storage Boxes , stationery boxes, kid toys, Paper Boxes , school supplies, office supplies and other products import and export business.
