1、形状规则或表面柔软的产品：对于形状规则或者表面柔软的产品，如肉肠类产品、豆制品等，不必要求材料的机械强度高，只需要考虑材料的阻隔性和温度对材料的影响。

1. Products with regular shapes or soft surfaces: For products with regular shapes or soft surfaces, such as sausages, soy products, etc., it is not necessary to require high mechanical strength of the material, but only to consider the barrier properties of the material and the impact of sterilization temperature on the material.

故而，对这样的产品，一般采用OPA/PE 结构的包装袋。如果需要高温(100℃以上)，可采用OPA/CPP结构，或者采用耐高温的PE 作为热封层。

Therefore, for such products, OPA/PE structured packaging bags are generally used. If high-temperature sterilization (above 100 ℃) is required, OPA/CPP structure can be used, or high-temperature resistant PE can be used as the heat sealing layer.

2、表面硬度高的产品：诸如带骨肉制品这类产品，由于表面硬度高而且有坚硬的突起，容易在抽真空和运输过程中刺破包装袋，因此这类产品的包装袋需要具有很好的耐穿刺性和缓冲性能，可选择PET/PA/PE 或者OPET/OPA/CPP材质的真空袋。

2. Products with high surface hardness: Products such as bony meat products have high surface hardness and hard protrusions, which can easily puncture the packaging bag during vacuum pumping and transportation. Therefore, the packaging bag of these products needs to have good puncture resistance and cushioning performance. Vacuum bags made of PET/PA/PE or OPET/OPA/CPP materials can be selected.

如果产品重量在500g以下，可以尝试采用OPA/OPA/PE结构的包装袋，这种袋具有很好的产品适应性，抽真空效果更佳，同时不会改变产品的形状。

If the product weight is below 500g, you can try using packaging bags with OPA/OPA/PE structure. This type of bag has good product adaptability, better vacuum effect, and will not change the shape of the product.

3、易变质的产品：低温肉制品等容易变质并需要低温的产品对包装袋的强度要求不高，但却要求其具有的阻隔性，因此可以选择纯粹的共挤膜，如PA/PE/EVOH/PA/PE 结构的薄膜，也可以采用干复方式，如PA/PE薄膜，还可以采用K 涂层材料。高温产品则可以采用PVDC收缩袋或者干复袋。

3. Products that are prone to spoilage: Low temperature meat products and other products that are prone to spoilage and require low-temperature sterilization do not have high requirements for the strength of packaging bags, but they require excellent barrier properties. Therefore, pure co extruded films can be chosen, such as PA/PE/EVOH/PA/PE structure films, dry compound formulas can also be used, such as PA/PE films, and K coating materials can also be used. High temperature products can use PVDC shrink bags or dry composite bags.

4、更高档的产品：七层共挤包装，其更优的阻隔性能，能同时满足1、2、3所叙产品的需求，它的使用使得你的产品更显档次，大大延长内容物的保质期。

4. More high-end and high-quality products: Seven layer co extrusion packaging, with superior barrier performance, can simultaneously meet the needs of products mentioned in 1, 2, and 3. Its use makes your product more upscale and greatly extends the shelf life of the content.

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