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What problems are prone to occur in frozen food packaging?

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1. The impact resistance of the bag is poor. It is easy to be damaged by external forces during transportation, loading and unloading and shelf placement. It is very easy to break and open the bag, which not only affects the appearance of the packaged products, but also cannot play the due role of the packaging itself
2. The smoothness of the packaging bag itself is not good. In the production process, the opening is poor and the production efficiency is low. At the same time, the utilization rate of the packaging bag will be reduced and the cost will be wasted
3. Insufficient heat sealing strength and high heat sealing temperature of the packaging bag cause damage to the heat sealing layer, reduce the protective performance of the packaging bag, greatly shorten the shelf life of the contents, and make the contents fail to reach the corresponding shelf life
4. The peeling strength between the layers of the packaging bag is small, the tensile breaking force is not enough, and the mechanical properties of the packaging bag are poor, resulting in the stratification of the packaging bag, the packaging bag can not achieve the due load-bearing function, and can not play an effective role in protecting the contents
5. The cold resistance of frozen food can not meet the requirements. Under the condition of low temperature, it can not maintain the original performance of the material. The packaging material is brittle, which reduces the mechanical strength of the packaging material, resulting in the rupture and cracking of the packaging bag, and can not meet the protection of the contents
6. The function of the easy tear opening of the packaging bag can not be effectively brought into play. The tear strength is too large, which makes the packaging bag difficult to open, and the tear strength is too small, which reduces the mechanical properties of the packaging bag. Therefore, it is necessary to meet the humanized design of the easy tear opening of the packaging bag and complete the protection of the product at the same time
7. The puncture performance of the packaging bag is generally hard after freezing, especially fish and meat products, which contain bones and hard objects. The extrusion of products during transportation and stacking is easy to puncture the packaging bag and damage the sealing of the packaging bag. Therefore, frozen food has high requirements for the puncture of the packaging bag.


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