Four ways to identify the pros and cons of thermos cups
The quality of thermos cups on the market varies, how should ordinary consumers identify them? Industry insiders suggest that we should focus on the thermal insulation performance of the liner structure, the degree of sealing between the lid and the bottle body, and whether the material releases harmful substances, etc., which can be identified through four methods.
This is the main technical index of the thermos cup. After filling with boiling water, tighten the bottle stopper or cup cover clockwise. After 2 to 3 minutes, touch the outer surface and lower part of the cup body with your hands. If the body and the upper part of the cup body have obvious warming phenomenon, it means that the inner liner has lost the vacuum degree and cannot achieve a good heat preservation effect.
Trick 2 to identify the sealing performance Fill a glass of water and invert it for four or five minutes, screw the lid tightly, place the cup flat on the table, or shake it a few times, if there is no leakage, it means the sealing performance is good; See if the lid and the mouth of the cup are screwed together flexibly and if there is a gap.
The environmental protection of the three accessories is also a matter of concern. It can be identified by smell. 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 plastic or recycled plastic has a strong smell, dark color, many burrs, and the plastic is easy to age and break.
