Properties of products
Regularly for refrigerated at 0℃ to -18℃. The product with high requirements needs to be refrigerated at -30℃ to -40℃, and the packaging can still keep the strength and the integrality due to the good cold resistance. Therefore choosing the BOPP to be the outer wrapper, the CPE to be the inner which is changed into the freeze-tolerant one.
Structure
BOPA/CPE