The difference between a cold cup and a thermos cup

The cold cup is also called the low-temperature cup, but when we buy a cup, we will naturally choose the thermos cup. Few people will buy the cold cup because everyone likes to drink hot water. The thermos cup is a kind of thermos cup. There will be a cup cover, which has better sealing performance and is convenient for drinking water, but it will not cause burns. The thermos cup can store very hot water, but the water temperature will not be so fast.

What is the difference between a cold cup and a thermos cup?

The cold cup is also a kind of thermos cup, but the thermos cup generally has a cup cover (sealed cup body insulation) as a cup, which is convenient for holding water and drinking without scalding. The cold cup is designed to drink directly, of course, in fact they have the same heat preservation effect. But be careful not to put too hot water in the cold cup, because if you are negligent and drink it directly, it will burn you.

The qualities that a good thermos cup should have: the cup body is elegant in shape, smooth in appearance, well-proportioned in pattern printing and color, clear in edges, accurate in color registration, and firm in attachment; It is refined by vacuum pumping technology; the sealing cover is made of “PP” plastic material, which is harmless to heating, and there is no gap after the cup cover and cup body are tightened, and the seal is good.

The heat preservation and cold preservation time of a thermos cup depends on the size ratio of the cup body and mouth: a thermos cup with a large capacity and a small caliber lasts longer; on the contrary, a small capacity and a large caliber takes a shorter time. The heat loss of the thermos cup mainly comes from the heat conduction of the PP sealing cover, the vacuuming process of the inner tank wall (absolute vacuum is impossible), the outer wall of the inner tank is polished, wrapped in aluminum foil, copper-plated, silver-plated, etc.

How to choose a thermos cup

There are many varieties of stainless steel thermos cups on the market, and the prices vary greatly. For some consumers, they do not understand the principle and often spend a lot of money to buy satisfactory products. How can I buy a high-quality vacuum insulation cup?

First look at the appearance of the cup. Check whether the surface polishing of the inner tank and outer tank is uniform, and whether there are bruises and scratches;

Second, check whether the welding of the mouth is smooth and consistent, which is related to whether the feeling when drinking water is comfortable;

Third, look at the poor quality of plastic parts. Not only will it affect the service life, but also affect the sanitation of drinking water;

Fourth, check whether the internal seal is tight. Whether the screw plug and the cup fit properly. Whether it can be screwed in and out freely, and whether there is water leakage. Fill a glass of water and invert it for four or five minutes or shake it vigorously a few times to verify whether there is a water leak. Look at the heat preservation performance, which is the main technical index of the thermos cup. Generally, it is impossible to check according to the standard when purchasing, but you can check it by hand after filling it with hot water. The lower part of the cup body without heat preservation will heat up after two minutes of filling hot water, while the lower part of the cup with heat preservation is always cool.