How to determine whether the sealing of vacuum packaging bags is good?

The sealing of vacuum packaging bags is very important to prevent items from getting damp, deteriorating, or leaking during storage and transportation. Here are some methods shared by Jinde Packaging to determine whether the sealing of vacuum packaging bags is good:
1. Observe the appearance of the bag: If there are wrinkles, cracks, or holes on the surface of the bag, it indicates poor sealing of the bag.
2. Squeeze the bag by hand: If the bag can be easily squeezed, it indicates that there is air inside the bag and the sealing is not good.
3. Using a vacuum packaging machine: Place the bag into the vacuum packaging machine. If the bag can be vacuumed, it indicates that the sealing of the bag is good.
4. Observe the transparency of the bag: If the transparency of the bag is high, it indicates that the air inside the bag has been extracted and the sealing is good.
5. Test the freshness preservation effect of the bag: Place the items inside the bag in the refrigerator for refrigeration or freezing. If the items can remain fresh, it indicates that the bag has good sealing.
 
The above knowledge about vacuum packaging bags is shared by Jinde Packaging. Jinde Packaging has been dedicated to the research and production of vacuum packaging bags for 11 years, providing one-stop services including vacuum packaging bag blowing, design, printing, bag making, and sales. Obtained multiple certifications such as FDA certification, ISO certification, SGS certification, MA product certification, etc; We have the right to import and export vacuum bags, and export packaging bags to countries in Europe, America, Africa, and Southeast Asia. Jinde Packaging can provide customers with design solutions and template free sampling services, focusing on making every bag well. Defective products are guaranteed to be returned and replaced! Hotline: 15902743510