How to choose a cup to look good? How to choose a cup

1. glass: If you want to ask which glass is healthier to drink water, you think that glass must be on the list. As we all know, glass is extracted from sand and will not produce harmful substances when fired at high temperature. The chemical composition of glass is relatively stable, but it will burn off some impurities at high temperature. The glass surface is smooth and easy to clean, and bacteria and dirt are not easy to breed on the glass wall. But glass is fragile, not resistant to falling, and the most taboo is hot and cold. I remember pouring a pot of boiling water into a glass in winter and it cracked, and some of it burned directly to the bottom of the glass. Moreover, the thermal conductivity of glass is better, and hot water will burn when poured in. Later, there was a double glass, which also had a certain thermal insulation effect. Some also put plastic protective shells on the outside to enhance the fall resistance. Now the firing technology of glass is very mature and can be made into various shapes. Starbucks' cat claw cup was once very popular with people.

2. Stainless steel thermos cup: Now stainless steel water cups are very popular, mainly because of their good fall resistance and convenient carrying. The stainless steel cup has a multi-layer structure with a vacuum in the middle, which has a very good heat preservation effect. Put a glass of iced boiled water in summer, and it will be chilled in a few hours. Now is the intelligent world, and the thermos cup also has the function of displaying temperature.

However, you should also pay attention to drinking water with stainless steel thermos. Common cup materials are 304 steel and 3 16 steel. 304 stainless steel is widely used in industry, furniture decoration industry and food and medical industry. It is a common material for thermos cups. This kind of thermos cup is completely safe, healthy and safe to drink, but it can't be used to drink drinks containing acid and alkali substances such as milk or strong tea, which is easy to corrode the inner container. 3 16 stainless steel is mainly used in food industry, watch accessories, pharmaceutical industry and surgical instruments. It is based on 304 stainless steel with a certain amount of molybdenum added, so it is more acid and alkali resistant and corrosion resistant. Although the acid and alkali corrosion resistance of 3 16 stainless steel is enhanced, it is not recommended to drink cola sprite, because carbonic acid will react with stainless steel cups. If you want to drink a cold and happy fat house water on a hot day, don't choose a stainless steel thermos.

4. Ceramic Cup: A cup of tea is a very classic ceramic cup. The main component of ceramic cups is clay, which will form a layer of glaze on the surface after high temperature calcination. In general, there are no harmful substances in this glaze, so ordinary ceramic cups are as harmless as glasses, and drinking water with them will not do any harm to the body. Moreover, ceramics are divided into food-grade and non-food-grade ceramics, which are used to make tableware and water cups. The requirements of food-grade ceramics are more stringent, and the firing temperature can reach 1200 degrees, and many impurities and harmful substances are burned in the process. But when buying ceramic cups or other ceramic products, you will find some patterns on the inner wall or surface of the cups. The raw materials of these patterns are pigments. These pigments are divided into underglaze colors and underglaze colors.

5. The underglaze cup is painted first and then calcined at high temperature. At this time, the pigment already exists under the glaze. Under normal circumstances, harmful substances in pigments will not penetrate out. Therefore, underglaze ceramic cups are also relatively healthy and environmentally friendly cups. Overglaze color is painted on glaze and then fired. The harmful substances in this cup pigment are easy to seep out and endanger people's health. Therefore, ceramic cups should be the true colors of ceramics, not the colorful ones.

6. Zisha Cup: Zisha Cup is a cup made of purple sand mud. It has the advantages of compact structure, high strength, good air permeability, difficult smell of tea, and difficult deterioration of tea. Therefore, the purple sand cup is most suitable for making tea. The purple sand cup is made of purple sand mud, and various minerals and trace elements in the purple sand mud have health care effects on human body. Therefore, making tea with purple sand cups often has a health care effect on the human body. Moreover, purple sand pottery is resistant to burning, and the cup is not easy to burst in warm fire in winter. This is also the reason why people who like drinking tea at all times and at all times especially like drinking tea in purple sand cups. However, the relative price of purple sand cups is relatively high and needs proper maintenance.

7. Enamel Cup: The most fashionable cup is the enamel cylinder. In the past, the washbasin, rice bowl, cup and ladle in the water tank were all enamel. Enamel cup is an inorganic glass glaze coated and burned on the surface of metal substrate. The enamel coating on the metal surface can prevent the metal from rusting, so that when the metal is heated, it will not form an oxide layer on the surface, and it can resist the corrosion of various liquids. Enamel products are not only safe and non-toxic, easy to wash and clean, but also can be widely used as tableware and washing utensils in daily life, and under certain conditions, they have excellent properties such as high hardness, high temperature resistance, wear resistance and insulation for metal blanks. However, the enamel on the outside of the enamel cup is easy to fall off due to knocking. Once the protection of enamel is lost, the metal inside will rust easily.

8. Plastic cups: Plastic plasticity can be made into cups of various shapes and colorful. However, there is a great controversy about plastic cups. The controversial content is that plastic cups are not safe enough and are not suitable for cleaning. There are many kinds of plastic cups, and we often see and use three kinds in our lives, namely, PC plastic material, PP plastic material and the recently emerging tritan plastic material. As for the material of plastic products, you can see that the numbers on the take-away box are very knowledgeable, so don't use them indiscriminately. )

9. Plastic cups made of 9.PC are one of the most common cups, which are mostly used to make baby bottles and space cups. But they are controversial because of bisphenol A, which is very harmful to human body. Long-term intake of bisphenol A can also cause cancer, and bisphenol A is more harmful to infants. PP material is the only plastic material that can be heated by microwave oven! Of course, there are many cups made of pp plastic, but except for bisphenol A, they seem to be inferior to PC plastic in transparency, toughness and other properties, and although pp material does not contain bisphenol A, it does not mean that pp material is absolutely safe, and the unknown pp material will even be more harmful than PC material. In recent years, cups made of tritan are very popular. Tritan is relatively safe and does not contain bisphenol A or any other bisphenol. Designated materials listed as baby products in Europe and America. If you want to ask which material is the safest for plastic cups, there is only tritan plastic material at present. In addition to the material problem, plastic cups are not easy to clean. It must not be cleaned with steel balls and other items, which is easy to leave scratches and breed bacteria. When there are scratches or cracks, you should consider replacing the cup.

10, paper cups: disposable paper cups are convenient to carry and use, and low in price, and are common drinking tools in public places. It uses recycled polyethylene, but it will crack during reprocessing and produce many harmful compounds, which are easier to migrate into water during use. Don't drink water from paper cups for a long time. It is better to have a special cup.

1 1, tea-leaking insulation: At present, all glass stainless steel thermos cups are equipped with tea-leaking insulation or tea insulation, which can separate the tea leaves, and it is not necessary to spit out the tea leaves when making tea, but it is a problem to clean up the tea-leaking insulation. Stainless steel tea leakage will still be corroded after long-term contact with strong tea, so pay more attention to cleaning.