The hole in the thermos is the mouth

- Sep 21, 2019-

The hole in the thermos is the mouth. There is heat conduction at the connection between the bottle mouth inside and outside the glass, and the bottle mouth usually relies on a cork or plastic plug to prevent heat loss. Therefore, the larger the bottle capacity, the smaller the bottle mouth, the higher the insulation efficiency. It is very important to maintain a high vacuum on the lining of the bottle for a long time. If the air in the interlayer is gradually inflated or the sealed air extraction tail is damaged, the vacuum state of the interlayer is destroyed, and the insulation bottle bladder loses its insulation efficiency