Four Ways To Identify The Pros And Cons Of A Vacuum Cup
May 24, 2021
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 cup cover 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 to 3 minutes, touch the surface and bottom of the cup with your hands. If you find the cup There is obvious warming of 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 cup lid and the cup mouth is flexible and whether there is a gap.
The environmental protection of plastic parts is also a concern. It can be distinguished 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 a big smell, dark color, many burrs, and plastics are easy to age and break.
