Why vacuum packaging bags leak
Vacuum packaging bags are widely used in many industries, but air leakage problems occasionally plague users. The vacuum bag leakage mainly occurs after the vacuuming is completed. If the leakage is not obvious at that time and is not easy to be found, then the leakage in the later period will have a significant impact on the quality of the product itself. Today, we will mainly talk about the causes of air leakage in vacuum packaging bags and the corresponding strategies.
1. The reasons for the leakage of vacuum packaging bags are:
The material of the packaging bag has poor puncture resistance. In the process of product processing and production, if the product contains sharp or hard substances, and the puncture resistance of the material cannot meet the requirements during vacuuming, it is easy to cause puncture and air leakage.
Solution:The material is changed according to the product performance, and the puncture resistance test is carried out several times under specific scenes.
2. The reasons for air leakage at the sealing of vacuum packaging bags are:
1. There are too many filling materials and the bag size is small. After heat sealing, too much filling material will cause the seal to rupture and leak when vacuuming.
Solution:Increase the size of the vacuum packaging bag or reduce the filling material.
2. The packaging bag material used has poor heat sealing adhesion. The process time between vacuuming and heat sealing is not long, and the adhesion of heat sealing is poor, which may cause the seal to break and leak during vacuuming.
Solution:Adjust the heat seal blade temperature, heat seal pressure, and cooling temperature according to the material to obtain the best heat seal adhesion, or consult the supplier how to obtain the best heat seal adhesion.
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