How to vacuum rice packaging bags without air leakage

There are many 2.5kg rice vacuum packaging bags on the market now. We use vacuum technology to extend the shelf life of rice, and even use it as a selling point. Therefore, we cannot be careless during the vacuum process. Once the rice vacuum bag leaks, it will affect the sales of rice. How can we improve the fault tolerance during production to ensure that each bag of rice can be vacuumed smoothly without air leakage?
1. Material issues
During the vacuum pumping process, if there is a problem with the material combination of the packaging bag, it is easy to be punctured by pointed rice grains. Therefore, we need to choose anti puncture PA+PE as the rice packaging bag material.
2. Packaging bag thickness
Rice vacuum bags need to be load-bearing. Even if anti puncture materials are used, if the thickness is not enough, air leakage may still occur. It is recommended to make the rice vacuum bag thicker when customizing to avoid friction during transportation that may cause air leakage in the rice vacuum bag, thus promoting rice sales.
3. Sealing temperature
Rice vacuum bags belong to the category of packaging bags for laminating, while composite bags are composed of a heat sealing layer, an intermediate layer, and an outer layer. The main function of the heat sealing layer is to increase the adhesion of the two layers of laminating film, which is achieved through heating and pressure. If the temperature is too high or too low, it may cause the bag opening to not be sealed properly, resulting in air leakage!
4. Heat sealing machine
There are single-sided and double-sided heat seals for hot air fans, as well as fully automatic and semi-automatic options. These prices vary, so when choosing a machine, we should choose one that fits our production scale and not be tempted by cheap prices, as the gains outweigh the losses.