Now, there are many kinds of frozen food in the market, because the freezing demand for each frozen food is also different, so now there are all kinds of frozen food packaging bags
on the market, and the common frozen food packaging is Which material structures are selected? The following will be explained by my editor who has worked in the food packaging industry for 10 years. 1. PET/PE This composite material structure is relatively common in frozen food packaging, with good moisture resistance, cold resistance, and low temperature heat sealing performance, and the cost is relatively low. 2. The composite materials such as BOPP/PE and BOPP/CPP have high moisture-proof, cold-resistant and low-temperature heat-sealing tensile strength, and the cost is relatively economical. Among them, the appearance and feel of the packaging bag of BOPP/PE structure are better than that of PET/PE structure, which can improve the product quality. 3. Composite materials such as PET/VMPET/CPE and BOPP/VMPET/CPE have fine surface printing due to the presence of aluminized layers, but the low-temperature heat sealing performance is slightly poor and the cost is high, so the usage rate is relatively low. 4. The packaging of composite material structures such as NY/PE, PET/NY/LLDPE, PET/NY/AL/PE, and NY/PE is resistant to freezing and impact. Due to the existence of the NY layer, its puncture resistance is very good. However, the cost is relatively high, and it is generally used for packaging angular or heavier products. In addition, there is also a simple PE bag, which is generally used as an outer packaging bag for vegetables and simple frozen food. In addition to packaging bags, some frozen foods need to use plastic trays. The most commonly used tray material is PP. Food-grade PP is hygienic and can be used at a low temperature of -30 °C. There are also PET and other materials. As a general transport packaging, corrugated boxes are also the preferred products for frozen food transport packaging due to their shock resistance, compression resistance and cost advantages.
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