Related instructions

Tips-Identification of the thermal insulation of the inner container This is the main technical index of the thermos cup. After filling with boiling water, tighten the bottle stopper or bottle cap clockwise, and touch the outer surface of the cup body and the lower part of the cup body with your hands after 2~3 minutes. If it is found that the cup body and the upper part of the cup body are obviously warm, it means that the inner container has lost its vacuum degree and cannot achieve good heat preservation effect.

Tip 2: Identify the sealing performance. Fill a glass of water for four or five minutes, tighten the lid, put the cup flat on the table, or shake it hard a few times. If there is no leakage, the sealing performance is good. In addition, it depends on whether the rotation of the lid and the mouth of the cup is flexible and whether there is a gap.

The identification of environmental protection of plastic parts is also a noteworthy problem, which can be identified by smell. If the cup is made of food-grade plastic, it has small smell, bright surface, no burr and long service life. Ordinary plastic or recycled plastic has a big smell, dark color and many burrs, and the plastic is easy to age and break.