Comparison of advantages and disadvantages

1. Simple identification method for heat preservation performance: Pour boiling water into the thermos cup and turn the cork or lid clockwise for 2-3 minutes, and then touch the outer surface of the cup with your hand. If the cup body is obviously warm, it means the product has been If the vacuum is lost, a good heat preservation effect cannot be achieved.

2. Sealing performance identification method: After adding water to the cup, tighten the stopper and lid in a clockwise direction, place the cup flat on the table, and there should be no water leakage; the screwing of the lid and the cup should be flexible and there is no gap .

3. Plastic parts identification method: new food-grade plastics are characterized by low odor, bright surface, no burrs, long service life and not easy to age. Ordinary plastics or recycled plastics are characterized by big smell, dark color, many burrs, and plastics are easy to age and break.

4. Simple capacity identification method: The depth of the inner tank is basically the same as the height of the outer shell, and the capacity (with a difference of 16-18MM) is consistent with the nominal value. Some low-quality vacuum flasks add sand and cement blocks to the cup to make up for the missing weight. Myth: A heavier cup (pot) is not necessarily good.

5. Simple identification method for stainless steel vacuum flask: There are many specifications of stainless steel materials, of which 18/8 means that the composition of this stainless steel material contains 18% chromium and 8% nickel. The material that meets this standard is a green product that meets the national food-grade standard. The product is rust and corrosion resistant. The color of the ordinary stainless steel cup is whitish and dark. If it is immersed in 1% salt water for 24 hours, it will produce rust spots. Some of the elements contained in it exceed the standard, which directly endangers human health.

Four ways to identify the pros and cons of a vacuum flask

The quality of thermos cups on the market varies from good to bad. How should ordinary consumers distinguish it? Industry insiders suggest that attention should be paid to the thermal insulation performance of the inner tank structure, the degree of sealing between the lid and the bottle body, and whether the material releases harmful substances, etc., which can be identified by four methods.

The first step is to identify the insulation of the inner tank. This is the main technical indicator of the vacuum flask. After filling with boiling water, turn the bottle stopper or lid clockwise. After 2-3 minutes, touch the surface and lower part of the cup with your hands. If you find the cup There is obvious warming phenomenon on the body and the upper part of the cup, which means that the inner tank has lost its vacuum degree and cannot achieve a good heat preservation effect.

Trick 2 Identification of sealing performance Fill a glass of water upside down for four or five minutes, tighten the lid, place the cup flat on the table, or shake it a few times. If there is no leakage, it indicates that the sealing performance is good; Check whether the screwing of the lid and the mouth of the cup is flexible and whether there is a gap.

Three tricks to identify the environmental protection of accessories The environmental protection of plastic accessories is also a problem worthy of attention. It can be identified by smelling. If the cup is made of food-grade plastic, the smell is small, the surface is bright, there is no burr, and the service life is long and not easy to age. ; Ordinary plastics or recycled plastics have big smell, dark color, many burrs, and plastics are easy to age and break.

There are many specifications for stainless steel material identification. 18/8 means that the stainless steel material contains 18% chromium and 8% nickel. The material that meets this standard is a green product that meets the national food-grade standard and is anti-rust. And corrosion-resistant. If it is made of ordinary stainless steel cup, the color is white and dark. If it is soaked in 1% salt water for 24 hours, it will produce rust spots. It is said that some of the elements contained in it exceed the standard, which will directly harm the human body. health.