In supermarkets and convenience stores, the use of vacuum packaging bags can be said to be everywhere, especially the use of vacuum octahedral sealing bags for food is amazing. Of course, good food vacuum octahedral sealing products can play a role in food storage, and more important is the composite consumer aesthetic. So, how to identify the quality of food vacuum octahedral sealing bags? The manufacturers put forward three suggestions, specifically as follows:
1. Appearance identification of vacuum packaging bag
There is no obvious scratch mark on the appearance of high-quality food vacuum packaging bag, whether there is pinhole leakage, the most important thing is to check whether the seal is qualified.
2. Seal strength identification
Food vacuum octahedral sealing bag to reach the vacuum situation, the inspection of the sealing place is the most important. Detection method: put both hands into the packaging bag, evenly tear in the opposite direction. Tearing means that even if the sealing part is deformed, it will not fall into layers, which is regarded as high sealing strength. Quietly a tear will be broken, as the seal is slightly low. In real life, the vacuum packaging bag of CPE material has higher strength than OPP material.
3. Leakage identification
The primary method of penetrability testing is coloring. Detection method: the colorant was added into the real empty food packaging bag, and then sealed. Put the food vacuum packaging bag horizontally on the filter paper, check whether the filter paper can change color after five or six minutes, and finally check the packaging bag again.
4. Pinhole detection and perforation resistance identification
This method can be used to test the quality of food vacuum octahedral sealing bag to test its endurance, toughness and strength.
Dongguan octagonal bag: LLF
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