The air valve film is made from PE.
It is designed by our company which already take the market share by more than 80% in China for its excellent stability. It is the mainly composed part of the air column bag.
The function of it is injecting the air from it to the air column bag and preventing the air coming out.
The dimension can be customized.
Normally the thickness ranges from 30 to 43 um.
The universal distance between each printing
valve graphic can be 2, 2.5 3,and 4cm.