With the progress of the times, people’s eating habits have changed, frozen food has gradually become popular among the public, the demand for frozen food packaging bags has continued to increase, and the material requirements for frozen food packaging bags have also continued to increase.
The conditions that packaging materials must meet are:
OPP/LLDPE: The product performance of this structure can achieve moisture-proof, cold-resistant, strong low-temperature heat sealing tensile strength, etc., and the cost is relatively economical;
NY/LLDPE: The packaging performance of this structure can withstand freezing, impact, and puncture. The cost is relatively high, but the product packaging performance is better;
Structures such as PET/LLDPE, PET/NY/LLDPE and PET/VMPET/LLDPE are also used in frozen products, but the usage rate is relatively low.