Views: 39 Author: Site Editor Publish Time: 2019-07-23 Origin: Site
How to Select the Best vacuum cup？
There are many types of vacuum cups. There are three ways to spread heat: radiation, convection, and transmission. The silver cup in the vacuum cup reflects the radiation of hot water. The vacuum of the cup and the cup can block the transfer of heat, and the bottle that does not transfer heat can prevent heat convection. The vacuaum cup also applies the principle of magnetized water, which is to add magnets to the bottom of the bottle and the cap to make the water magnetized.
Therefore, the vacuum cups are respectively stainless steel vacuum cup, glass vacuum cup, purple sand insulation cup, ceramic vacuum cup, plastic vacuum cup and so on.
Also, there are some tips when choosing a vacuum cup.
The first thing to look at is the appearance of the cup. See if the surface of the liner and the outer bladder are uniformly polished, and whether there are bruises or scratches.
Second, see if the mouth welding is smooth and consistent, which is related to whether the feeling of drinking water is comfortable.
Third, look at the quality of plastic parts. Not only will it affect the service life, but also affect the sanitation of drinking water.
Fourth, see if the internal seal is tight. Whether the screw plug and the cup fit properly. Whether it is free to screw in and out, whether it is leaking. Fill the glass with water for 4 or 5 minutes or use a few taps to verify that it is leaking.
There are several ways to do this:
1. Vacuum heat preservation performance simple identification method: pour boiling water into the heat preservation 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, the product has been lost and a good insulation effect cannot be achieved.
2.Sealing performance identification method: after adding water to the cup, screw the bottle stopper and the lid in a clockwise direction, put the cup flat on the table, should be no water leakage; the cup lid and the cup mouth should be flexible without gap .
3.Plastic parts identification method: The new food grade plastic has the characteristics of small smell and bright surface. And it is burr- free and more durable. Ordinary plastic or recycled plastic is characterized by strong smells and dark color. Both the ordinary plastic and recycled plastic have many colors. What’s more, they have more burrs.
4.Capacity simple identification method: the depth of the liner is basically the same as the height of the outer casing, (the difference of 16-18MM) capacity and the nominal value. Some poor quality mugs add sand and cement to the cup to make up for the missing weight. Myth: The weight of the cup (pot) is not necessarily good.
5. Stainless steel material simple identification method: stainless steel material specifications, 18/8 means that the stainless steel material composition contains 18% chromium, containing 8% nickel, meets this standard of materials, in line with national food-grade standards are green products, products Anti-rust and corrosion resistance. Ordinary stainless steel cup body color is whitish and dark, if placed in a concentration of 1% salt water for 24 hours, it will produce rust spots, and some of its elements exceed the standard, directly endangering human health.