In the summer, the use of crisper boxes is high. With the increasing awareness of food safety, in addition to paying attention to its price, style and size, materials and heat resistance have become an important factor in the purchase of crisper. It is understood that the material of the crisper on the market is mainly plastic and glass. What is the recent market performance of the two? How to avoid safety hazards when heating in a microwave oven?
    Recently, the reporter conducted an interview on this. The reporter visited a large supermarket in Li Wei and found that on the franchise shelves of the fresh-keeping box, the various styles and brand fresh-keeping boxes of plastic materials only accounted for one-third, which was significantly less than in previous years. A salesperson at the supermarket told reporters that "the recently accumulated plastic storage boxes are now in the discount zone and are no longer sold in counters."
“The price of plastic crisper has actually been much lower than in previous years. The plastic box of the big brand like 'Luokou’ has been reduced to two or three dollars, not to mention other unnamed brands. "A supermarket staff near the wiki square told reporters, "In the past, of course, plastic storage boxes were the most popular, but the situation has changed. Some consumers are worried that plastics may produce chemistry after heating at high temperatures. substance."
“Price is no longer the main consideration for customers to buy crisper. Now customers are more likely to accept glass storage boxes and ceramic storage boxes,” said a sales manager at a shopping mall in Ocean Plaza. The reporter saw at the scene that a glass storage box with a capacity of 1 liter is priced at 60-80 yuan, and such a price can buy a six-piece plastic crisper; and a 660-ml glass crisper is priced at 48 yuan, almost three times the price of similar plastic crisper. However, the reporter stopped to observe for half an hour and found that 8 of the 8 customers who came to buy the crisper had chosen the glass crisper.
Heating to see "qualification": plastic selection "5" glass selection heat-resistant type
Jiangsu Yujia Plastic Industry Co., Ltd. learned that the crisper is heated in the microwave oven, the plastic is not necessarily harmful, and the glass is not necessarily safe.
"Some plastic crispers are mainly made of PP or PE materials. If the temperature exceeds their heat resistance limit, there is a danger of releasing plasticizers. But it cannot be said that plastics 'into the furnace' will definitely cause food safety hazards. A staff member of the Qingdao Quality Supervision Bureau told reporters that in general, plastic products have seven plastic types of logo codes, such as "No. 1 plastic for mineral water bottles; No. 2 plastics for food packaging bags, etc." The main component of No. 5 plastic is polypropylene, and the heat-resistant temperature can reach 130 ° C, which is the only one that can be heated into the microwave oven."
According to the staff member, customers can check whether there is a triangular “5” mark at the bottom of the plastic storage box to determine whether they have the “qualification” of “into the furnace”. Brand, avoid using long-term heating of plastic lunch boxes when using."
At the same time, the entry of glass into the microwave oven does not mean that it is foolproof. If you do not pay attention to the nuances of different glass materials, blindly put into the microwave oven, there will be no small security risks.
"The glassware used in our daily life is made of ordinary glass, tempered glass, and heat-resistant glass. Ordinary glassware can only be used as a general container. Tempered glass is mainly used as building materials and home decoration, and requires high temperature. Heating must use heat-resistant glass.” A staff member of the Qingdao Consumer Protection Committee introduced that some glass crispers appearing on the market now have the words “tempered heat-resistant glass” and “heat-resistant tempered glass”. It sounds like heat and tempering is one thing, in fact it is misleading consumers."
The staff member said that according to the warning issued by China Consumers Association that "tempered glassware has a high safety factor of self-explosion risk heat-resistant glassware," many consumers do not understand the difference between tempered glass and heat-resistant glass, and mistakenly tempered glass. The container was used for cooking purposes, causing the wounding of tempered glassware after it burst."
It is impossible for ordinary consumers to see the difference between “tempering” and “heat-resistant” glass from the appearance, but there are still unclear signs on the market. At present, China Daily Glass Enterprise Association has formulated relevant management methods, and specific implementation work is being carried out one after another.