Because different products have different requirements on packaging materials, it is necessary to make material selection according to product characteristics, including: whether it is easy to deteriorate, factors that cause deterioration (light, water or oxygen, etc.), product form, product surface hardness, storage Conditions, sterilization temperature, etc. A good vacuum bag does not have to have many functions, but depends on whether it is suitable for the product. The following small series introduces you to the material requirements of the vacuum packaging bag.
1. Products with regular shape or soft surface: For products with regular shape or soft surface, such as sausage products, soy products, etc., it is not necessary to require high mechanical strength of the material, only need to consider the barrier properties of the material and the sterilization temperature. influences. Therefore, for such products, bags of OPA/PE structure are generally used. If high temperature sterilization (above 100 ° C) is required, an OPA/CPP structure or a high temperature resistant PE may be used as the heat seal layer.
2, high surface hardness products: such as bone products, due to the high surface hardness and hard protrusions, easy to puncture the bag during vacuuming and transportation, so the packaging of such products need to have a good For puncture resistance and cushioning properties, vacuum bags of PET/PA/PE or OPET/OPA/CPP are available. If the weight of the product is below 500g, try the OPA/OPA/PE structure bag, which has good product adaptability and better vacuuming effect without changing the shape of the product.