People should pay attention to practicality and avoid the following misunderstanding when selecting the insulation cup: The insulation cup is not the more expensive the better. The manufacturing process of the insulation cup is not complicated. The insulation principle is basically the same. The difference may lie in the selection of materials, so it is not the more expensive and the larger the brand, the better the insulation effect of the insulation cup.
Seven points for attention in the purchase of insulation cup：
1.Look at the label or instructions of the cup. Generally, formal manufacturers will write the product model, name, volume, material, production address, manufacturer, standard number, after-sales service, use method, etc. If there is none of these, there is a problem.
2.Identify from the appearance of the thermos cup. Check whether the surface polishing of the inner and outer liner is uniform and whether there are bruises, scratches or burrs; Second, check whether the mouth welding is smooth and consistent, which is related to the feeling of comfort when drinking water; Third, check whether the internal seal is tight and whether the plug and cup body match.
3.Sealing test: first twist off the cup lid to see if it is completely consistent with the cup body, then add boiling water into the cup, and then turn the cup upside down for two to three minutes to see if there is water leakage.
4.Thermal insulation test: because the stainless steel vacuum insulation cup uses vacuum insulation technology, it can prevent heat transfer to the outside under vacuum, thus achieving thermal insulation effect. So to test the heat preservation effect of the stainless steel vacuum insulation cup, just put boiling water into the cup. After two or three minutes, touch each part of the cup to see whether it is hot. If any part is hot, the temperature will be lost from that place. It is normal to have a slight fever at the place like the mouth of the cup.
5.Identification of other plastic parts: The plastic used in the insulation cup should be food-grade. This plastic has small odor, bright surface, no burr, long service life and is not easy to age. The characteristics of ordinary plastic or recycled plastic are large odor, dark color, many burrs, easy aging and fracture of plastic, and odor after a long time. This will not only shorten the life of the cup, but also pose a threat to our health.
6.Capacity detection: because the insulation cup is double-layer, the actual capacity of the insulation cup is different from what we can see. First of all, see if the depth of the inner layer and the height of the outer layer of the insulation cup are not different (generally 18-22mm). Many small factories often start with materials to reduce costs, which may affect the capacity of the cup.
7.Identification of stainless steel used for heat preservation cup material: There are many kinds of stainless steel materials, of which 18/8 means that this stainless steel material contains 18% chromium and 8% nickel. The material meeting this standard is green and healthy product that meets the food-grade standard, and the product is rust-proof and corrosion-resistant. The color of the ordinary stainless steel cup (pot) body is white or dark. If it is soaked in 1% salt water for 24 hours, it will produce rust spots. Some of the elements contained in it exceed the standard and directly endanger human health.
