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Identification Method Of Vacuum Vacuum Flask
Sep 30, 2017

Evaluation of the heat preservation of the gallbladder in one of the main technical indexes of the Thermos flask, fill with boiling water, clockwise to tighten the cork or cup cover, after 2-3 minutes to touch the surface of the cup body and the lower part, if found that the cup body and the body has a clear warm phenomenon, then the inner bile has lost the vacuum, can not achieve good thermal insulation effect.

Recruit two to identify the sealing performance fill a glass of water inverted four, five minutes, the lid to tighten, the cup flat on the table, or a few hard to jilt, such as no leakage phenomenon, the sealing performance is good, but also to see if the cup lid and cup mouth of the rotation is flexible, whether there is a gap.