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  Vacuum packaging bags are damaged during production, transportation and storage, which is a common quality problem in flexible packaging factories. This article simply analyzes the causes of vacuum packaging bags damage and finds out countermeasures.
There are two main reasons for the damage of vacuum packaging bags:
1. It is the design of food vacuum packaging.
If the net content or volume of the content exceeds the tolerance range of the flexible packaging material used, there will be problems of bag breakage and cracking when a slight external force is applied during transportation or sales and circulation. It is generally used as a heat sealing layer for vacuum packaging bags, and the material thickness should not be less than 50μm thick;
2. It is the quality of food vacuum packaging materials.
The quality problems of packaging materials lead to sealing cracking problems in the finished packaging, which are generally concentrated in the following aspects:
2.1 It is the physical and mechanical properties of food packaging - such as tensile strength and elongation at break, puncture resistance, pendulum impact resistance, peel strength, etc., can comprehensively judge the toughness, puncture resistance, impact resistance of the packaging bag Whether the physical and mechanical properties such as sex meet the requirements of packaging, storage stacking and transportation. (Related to the content, the size of the packaging bag, the transportation route and the packaging form)
2.2 It is the sealing of the food packaging- such as the burst pressure test, you can determine the location of the broken bag and the location of weak mechanical strength. For example, the heat seal strength test can determine whether the heat seal strength meets the requirements of the food content, and determine the location of the poor heat seal and the uniformity of the heat seal effect. For example, the damage of chicken claw vacuum packaging is because when the chicken claw is cut, the bones of some broken claws are sharply cut, and when boiled, the skin shrinks, so the bones are exposed, which is easy during transportation. Pierce the bag. Therefore, the puncture resistance of the packaging bag should be considered as the key point of the vacuum packaging material combination.
 The leak and seal strength tester can not only detect the maximum bursting force of the vacuum packaging bag, but also test the bursting time of the packaging bag by setting the applied pressure. The stacking structure can be designed according to the test data to further adjust the parameters of the heat sealing process to improve the effect of packaging, or to analyze the presence of the vacuum packaging pouch according to the position of the structural problems of the flexible bag ruptured
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