The quality of insulated cups on the market varies greatly. How can ordinary consumers distinguish between them? Industry insiders suggest focusing on the insulation performance of the inner liner, the seal between the lid and the body, and whether the materials release harmful substances.
Trick 1: Insulation Performance Assessment
This is a key technical indicator of an insulated cup. After filling it with boiling water, tighten the stopper or lid clockwise. After 2-3 minutes, touch the outside and bottom of the cup. If the cup body and upper part feel noticeably warm, it means the inner liner has lost its vacuum and cannot achieve good insulation.
Trick 2: Sealing Performance Assessment
Fill the cup with water, invert it for four or five minutes, tighten the lid, and place the cup flat on a table or shake it vigorously. If there is no leakage, the sealing performance is good. Also, check if the lid screws on smoothly and if there are any gaps.
Trick 1: Sealing Performance Assessment
Tip 3: Identifying the Environmental Friendliness of Accessories. The environmental friendliness of plastic accessories is also an important issue. You can identify it by smell. If the cup is made of food-grade plastic, it will have little odor, a shiny surface, no burrs, and a long service life that is not prone to aging. Ordinary plastic or recycled plastic will have a strong odor, a dull color, many burrs, and will age and break easily.