Stainless steel cup is good
Stainless steel cups have always been regarded as the best in the insulation cups. They are durable and have good insulation effect. Many people choose stainless steel vacuum flasks when purchasing insulation cups. The stainless steel vacuum flask is made of double-layer stainless steel inside and outside. The inner casing and the outer casing are combined by welding technology, and the air in the interlayer of the inner liner and the outer casing is extracted by vacuum technology to achieve the effect of vacuum insulation. In fact, the vacuum flask, the length of the holding time depends on the structure of the cup and the thickness of the cup material.
In general, the thinner the cup material, the longer the holding time. However, the cup body is easy to be damaged and deformed, which affects the service life; the outer layer of the vacuum cup liner and the metal plating and copper plating can also increase the degree of heat preservation; the large-capacity, small-diameter vacuum cup has a longer holding time, and the opposite is small capacity. The large-diameter vacuum flask has a short holding time; the service life of the vacuum cup also depends on the cleaning and vacuuming time of the inner layer of the cup, and the most important is the structure of the vacuum furnace.
Single furnace type overall vacuum brazing furnace. The cycle time of vacuuming of the furnace is long, and if the manufacturer wants to improve the production efficiency and shorten the vacuuming time, the life of the cup will be affected. The life of the cup is only about 8 years. There is a vacuum cup exhausting station and its advantages: the vacuum cup produced by the vacuum exhausting station with tail exhaust, the heating temperature is about 500 °C when vacuuming, the outer shell of the vacuum cup is not easy to be deformed, but the copper tube welding is easy to touch. Leakage, special protection in the processing of semi-finished products.
In addition, a large class is vacuum brazing furnace type, which is roughly divided into three types. I did not expect it. The vacuum insulation cup that we usually use is no different from the general insulation cup in terms of appearance, and the vacuum insulation cup is used in the production process. Generally, the insulation cup is much more complicated and the technical difficulty is much higher. Therefore, vacuum insulated cups are at least twice as expensive as regular insulated cups.
1. After adding water to the cup, tighten the stopper and the lid in a clockwise direction. Place the cup on the tabletop and drain it without water. The screwing of the lid and the cup should be flexible without gaps. Look at the seal is not good.
2. See if the vacuum insulation of the cup is good. Pour the boiling water into the cup and screw the bottle stopper or cup cover clockwise for 2-3 minutes. Then touch the outer surface of the cup body by hand. If the cup body has obvious warmth. , indicating that the product has lost the vacuum and can not achieve good insulation effect.
3, identify the quality of plastic parts: food-grade new plastic is characterized by small odor, bright surface, no burrs, long service life and not easy to aging. Ordinary plastics or recycled plastics are characterized by large odor, dark color, many burrs, and easy aging of plastics.
4. The heavier the cup, the better. The depth of the inner liner of the vacuum flask is basically the same as the height of the outer casing. The difference between the capacity and the nominal value is consistent with the nominal value. Some poor quality mugs add sand and cement to the cup to make up for the missing weight.
With the continuous improvement of people's living standards, the thermos cup is widely used in our daily life. Here are some tips on how to buy a thermos cup. I hope to help everyone! In addition, you need to remind everyone that Before use, please clean the inside of the product and preheat it for 1~2 minutes with hot water to increase the internal temperature of the cup to improve the insulation effect.
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