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Do You Really Know "Vacuum Bottles"?

Views: 20     Author: Echo     Publish Time: 2021-08-10      Origin: Site Inquire

Many people are using vacuum packaging. Maybe because of curiosity or because there are fewer products pressed, they want to unscrew the pump to see. You will see that there is no straw (long tube) on the pump, thinking that the straw is broken or the manufacturer forgot to install the straw. In fact, this is an incorrect operation of the vacuum bottle.

vacuum refillable pump bottles



The airless bottle is a high-end packaging bottle composed of a cap, a pressure head, a cylindrical or ellipsoidal container bottle body, a base and a piston placed at the bottom of the bottle body.

airless bottles


The design principle of the vacuum bottle is to use the contraction force of the spring to prevent air from entering the bottle, resulting in a vacuum state, and to use atmospheric pressure to push the piston at the bottom of the bottle forward.


However, because the spring force and atmospheric pressure cannot give enough force, the piston cannot fit too tightly with the bottle wall, otherwise the piston will not be able to move forward due to excessive resistance; on the contrary, if the piston is to be moved forward easily and the material leakage is prone to occur, Therefore, vacuum bottles have very high professional requirements for the production process.

How do Airless Pump Bottles work

Ningbo Sangu Plastic Industry Co.,ltd is one of the leaders in professional cosmetic packaging designing and manufacturing in China, we mainly produce plastic airless bottles &airless jars for cosmetic packaging and skincare packaging market.

Sangu’s products have passed strict safety certification, from the raw materials to the production process to the final product are in line with various testing standards, and has a number of certification certificates, we make sure that each user can use our products can be assured.


Welcome to inquiry us if have any demands!



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NINGBO SANGU PLASTIC INDUSTRY CO.,LTD

: No.418 Changyuan Road, Yangming Street, Yuyao City, Zhejiang Province, China
: +86 13857834571
: +86 13857834571

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