How to use vacuum packaging bags?

Vacuum packaging bags can serve as moisture and oxygen barriers, effectively extending the shelf life of packaged items. They are widely used in industries such as food, medicine, and electronics. Of course, in order for vacuum packaging bags to play their due role, it is also necessary to master the correct usage methods. So, how to use vacuum packaging bags?

1. The impact of ambient temperature on the storage effect of vacuum packaging.

The gas moisture in the air is permeable to packaging materials, and the permeability coefficient is closely related to temperature. Generally, the higher the temperature, the greater the permeability coefficient, and the more severe the penetration of packaging materials.

So for food packaged in vacuum bags, it is best to store it at low temperatures. If stored at high temperatures, it will seriously affect the permeability of the packaging bag and cause the food to spoil. Generally, vacuum packaged food should be stored at temperatures below 10 ℃.

2. Quality issues in the vacuum packaging process

Firstly, when vacuum packaging is heat sealed, it is important to ensure that the sealing area does not have any residue such as oil, protein, food, etc., to ensure that the seal can be fully heat sealed.

Furthermore, vacuum packaging bags should evacuate the gas, especially for fresh meat and amorphous food vacuum packaging, to prevent residual gas from causing food inside the vacuum packaging bag to spoil.

3. Foods that are not suitable for vacuum packaging

Products that are not suitable for vacuum packaging are fragile foods. If these foods have edges and corners, they can easily puncture and penetrate the packaging bag. So, it's better not to use vacuum packaging for this type of food, use other packaging instead.