Thermal insulation products are divided into glass vacuum thermal insulation containers and stainless steel vacuum thermal insulation containers from the material. The former commonly includes thermos, thermal insulation lunch box, glass liner thermal insulation Cup, etc., and the latter is mainly stainless steel thermal insulation Cup. Regardless of small mouth, large mouth, portable and desktop seat, the purchase methods are similar, and the specific products are slightly flexible according to the specific situation. The selection of stainless steel thermos cup and glass thermos bottle is briefly introduced.

The following identification methods can be used for stainless steel thermos cup:

(1) Simple identification method of thermal insulation performance: pour boiled water into the thermal insulation cup and tighten the bottle stopper or cup cover clockwise for 2-3 minutes. Touch the outer surface of the cup body with your hand. If the cup (pot) body has obvious warming phenomenon, especially the lower part of the cup body is hot, it indicates that the product has lost vacuum and can not achieve good thermal insulation effect, but the lower part of the thermal insulation cup is always cool. Misunderstanding: some people use their ears to determine whether there is a Zizi sound to determine their thermal insulation performance. Their ears can't tell whether there is a vacuum.

(2) Sealing performance identification method: after adding water to the cup (pot), tighten the cork or cap clockwise, and place the cup (pot) flat on the table without water seepage; The screw in and screw out of the cup (pot) cover and the cup mouth shall be flexible without gap. Fill a glass of water and turn it upside down for four or five minutes, or toss it hard to verify whether there is water leakage.

(3) Plastic parts identification method: food grade new plastic features: small smell, bright surface, no burr, long service life and not easy to aging. Characteristics of ordinary plastics or recycled plastics: strong smell, gray color, many burrs, easy aging and fracture of plastics. This will not only affect the service life, but also affect the sanitation of drinking water.

(4) Simple identification method of capacity: the depth of the inner tank is basically consistent with the height of the shell (difference of 16-18mm). The capacity is consistent with the nominal value. In order to cut corners and make up for the weight of missing materials, some domestic brands add sand and cement blocks to the cup (pot). Myth: a heavy cup (pot) is not necessarily good.

(5) Simple identification method of stainless steel materials: there are many specifications of stainless steel materials, of which 18 / 8 means that the stainless steel material contains 18% chromium and 8% nickel. The materials that meet this standard meet the national food level standards. They are green environmental protection products with rust prevention and corrosion resistance. The color of ordinary stainless steel cup (pot) is white or dark. If it is soaked in 1% salt water for 24 hours, rust spots will occur, and some elements contained in it exceed the standard, which will directly endanger human health.

(6) Cup appearance identification method. I. check whether the inner and outer tank surfaces are polished evenly and uniformly, and whether there are bruises and scratches; Second, see whether the mouth welding is smooth and consistent, which is related to the feeling of comfort when drinking water; III. check whether the internal seal is tight and whether the plug and cup body match; Look at the mouth of the cup. The rounder the better.

(7) Check the label and other accessories of the cup. Check whether the product name, capacity, caliber, manufacturer name and address, adopted standard number, use method and precautions in use are indicated. A manufacturer who attaches importance to quality will strictly follow the requirements of relevant national standards and express its product performance.

When selecting products, customers should also pay attention not only to the appearance, but also to whether their instructions are thermal insulation products. Now some products are novel and generous in appearance, which are very similar to thermal insulation products, but they have no thermal insulation performance. If there is a "wonderful Cup", with a grass green cup body, exquisite modeling, smooth lines and comfortable hand feeling, the product does not deceive consumers, because its instructions clearly indicate that it can "warm hands in winter and not hot in summer". Consumers can only blame their own eyes.

When purchasing glass thermos, we can also use the following identification methods:See that the silver coating of the insulation container is uniform and does not fall off. Unscrew the base and the vacuum suction port below is intact.

Precautions for use of thermos cups (pots and bottles):
The thermos cup shall not hold fruit juice, milk, green tea or carbonated drinks for a long time. It shall be thoroughly washed with neutral detergent when used for the first time.

Avoid collision and impact during use to avoid damaging the cup body or plastic, resulting in insulation failure or water leakage. Tighten the screw plug with appropriate force and do not rotate too hard to avoid screw failure. When drinking coffee, tea or drinks often, the inner tank will change color, which is a normal phenomenon. It can be removed by dipping a toothbrush in toothpaste.