What technology can be used to make composite film bags?

The main film substrates are: outer printable film BOPA BOPET BOPP inner heat sealable film CPP PE! And * * * squeeze film! These materials are compounded into a composite film with glue as required! Common structures are: PA/PE or PA/CPP PET/PE or PET/CPP also has three or four layers. In order to improve the texture properties of materials, the basic characteristics of PET/PA/PEPEPEET/Al/CPPPPA/Al/PA0/Al/CPP are as follows: PE is suitable for low-temperature use and CPP is suitable for high-temperature cooking, so PA is to increase physical strength and puncture resistance. Pets, increase mechanical strength! Boring! Then according to the demand, combination, various properties, there are also transparent, in order to increase the barrier performance, use water-resistant PVA high barrier coating! -I don't know how you are, or leave a message!