Use glassware to learn

As Chinese consumers change their eating structure and cooking style, the number of consumers using glassware and cooking utensils is increasing rapidly. It has some problems, and accidental purchases of misused glass bursts happen all the time.

More types of glassware

Glass products have the advantages of transparency, easy cleaning, firmness and corrosion resistance. They are increasingly used as daily necessities and food containers and are favored by consumers. With the advancement of glass manufacturing technology and craftsmanship, the types and applications of glass products are becoming wider and wider. At present, the glassware that consumers often encounter in home life mainly include ordinary glass, tempered glass and heat-resistant glass.
Most consumers know that ordinary glass cannot be used in high-temperature heating (oven, microwave) environments, but many consumers do not understand the difference between tempered glass and heat-resistant glass, and mistakenly use tempered glass containers for cooking, even tempered glass utensils Injury accident after explosion. Tempered glass is an improved product that is tempered and improved on ordinary soda-lime glass to improve mechanical shock resistance, and its thermal shock resistance is limited.
Most of the heat-resistant glass belongs to the borosilicate glass series, including glass-ceramics and other varieties. Due to the different chemical composition, its structure is also different from ordinary glass or tempered glass. Borosilicate glass has a small thermal expansion coefficient, good high temperature resistance, fast cooling and rapid change. It is suitable for kitchen as a food processing container and can be directly used in microwave ovens and ovens. Heat-resistant glass products in the kitchen mainly include heat-resistant tableware, heat-resistant crisper boxes and cooking utensils, which can be divided into open fire and dark fire.

How to choose heat resistant glass

At present, the identification of heat-resistant glass products on the market is not clear. Some operators also intend to confuse the concept and expand the functions of ordinary tempered glass and even ordinary glass, making it extremely easy for consumers to buy and misuse.
Heat-resistant glass products should be marked with corresponding signs, indicating the use temperature, use range, etc. Consumers should pay attention to the above information when purchasing and using. At present, among the heat-resistant glass, borosilicate glass is mostly used, and the heat resistance of glass ceramics is better. The heat-resistant glass product of the invention is obtained by annealing and cooling, and has good thermal stability, high heat-resistant temperature, high production difficulty and high production cost. Consumers who consider the use of nominal heat-resistant glass at low prices are considered to be authentic.
In addition, glass cookware (tableware) production and operation enterprises are also obliged to clarify product materials, use environment and safety precautions. The corresponding electrical appliance manufacturers such as ovens and microwave ovens also need to indicate the specific functional requirements and scope of use of the matching heating container in the instruction manual. Catering businesses should also provide consumers with glassware that meets safety requirements.
Know more about it - the reason for the tempered glass

Tempered glass bleeds easily because, during the manufacturing process, it tends to turn into a nickel sulfide mixture that is invisible to the naked eye. This nickel sulfide can cause the tempered glass to not match the glass under ambient temperature changes. Larger expansion, that is, breaking the balance of many stresses inside the glass, the glass may break, causing the phenomenon of the glass to explode and fly.
Flat tempered glass has strong resistance to mechanical impact, but after the special-shaped utensils such as cookware (tableware) are tempered, due to the complex shape, uneven external force, high self-explosion rate and poor safety. heating. Although it is possible to increase the "homogenization" treatment of tempered glass and reduce the rate of self-explosion, the "homogenization" treatment of tempered glass is currently mainly used in industrial fields, such as automotive glass, building doors and windows, and furniture accessories.
The United States, Japan and some countries in Europe have been using glassware as the main kitchen utensils very early. Problems appear earlier and earlier. To this end, some countries have issued regulations on the production, classification and use of glassware, clarifying what is heat-resistant glass and its key performance parameters.