食品包装袋在选择冷冻时要注意什么？

来源：http://www.sztensun.com/ 日期：2024-01-11

耐冲击性：冷冻食品在运输，装卸和货架放置过程中很容易受到外力的破坏。当包装袋的抗冲击性差时，很容易折断袋子并打开袋子，这不仅影响包装产品的外观，包装袋的抗冲击性可以通过摆锤的抗冲击性测试来测量。

Impact resistance: Frozen food is easily damaged by external forces during transportation, loading and unloading, and shelf placement. When the impact resistance of the packaging bag is poor, it is easy to break the bag and open it, which not only affects the appearance of the packaged product, but also the impact resistance of the packaging bag can be measured through the impact resistance test of the pendulum.

热合强度：如果包装袋的热合强度不够或虚封，轻微的冲击会导致密封破裂；如果热封温度过高，则容易造成热封层的破坏，并且容易使密封线的材料强度降低。一旦受到强烈的振动或冲击，就容易引起袋子破裂和大面积的烂袋现象，这使得无法有效保护内部包装食品。

Heat sealing strength: If the heat sealing strength of the packaging bag is insufficient or not sealed properly, a slight impact can cause the seal to break; If the heat sealing temperature is too high, it is easy to cause damage to the heat sealing layer and reduce the strength of the sealing line material. Once subjected to strong vibration or impact, it is easy to cause bag breakage and large areas of rotten bags, which makes it difficult to effectively protect the internal packaging of food.

层间剥离的张力和强度：如果包装袋之间的剥离强度小且拉力不够，则包装袋的机械性能较差，容易造成包装袋分层，无法达到应有的承重作用，导致降低了包装袋的保护性能，大大缩短了内部食品的货架寿命。

Tension and strength of interlayer peeling: If the peeling strength between packaging bags is small and insufficient, the mechanical performance of the packaging bags is poor, which can easily cause layering of the packaging bags and fail to achieve the expected load-bearing effect, resulting in a decrease in the protective performance of the packaging bags and greatly shortening the shelf life of internal food.

耐穿刺性：冷冻食品通常在冷冻后变硬，特别是鱼类和肉类产品，含有骨头和坚硬的物体，在产品被挤压后的运输和堆放过程中很容易刺破包装袋，使包装袋的密封性受损，因此冷冻食品包装袋的抗穿刺性要求很高。

Durability to puncture: Frozen food usually hardens after freezing, especially fish and meat products, which contain bones and hard objects. During transportation and stacking after the product is compressed, it is easy to puncture the packaging bag, causing damage to the sealing of the packaging bag. Therefore, the puncture resistance of frozen food packaging bags is very high.

是耐压力：在运输和装卸过程中，振动，掉落或撞击会损坏运输包装，甚内部销售包装。因此，应在冷冻食品包装上进行相关的振动或跌落测试。选择能够保护冷冻食品质量，体现其商品价值，使综合包装成本合理的包装材料。

It is pressure resistant: during transportation and loading and unloading, vibration, dropping or impact can damage the transportation packaging, and even the internal sales packaging. Therefore, relevant vibration or drop tests should be conducted on frozen food packaging. Choose packaging materials that can protect the quality of frozen food, reflect its product value, and make the overall packaging cost reasonable.

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