1.PET- Polyethylene Terephthalate： A kind of packaging film with more comprehensive properties.Its transparency is good, shiny;With good air tightness, aroma and moisture-proof, widely used in candy, biscuit and other food packaging.

2.PP-- Polypropylene：PP film is polypropylene film, by propylene polymerization and made of a thermoplastic resin.Usually thicker, tougher, high tensile strength, can be used for greenhouse film, load-bearing packaging bags, etc.

3.PA-- polyamide (polyamide, abbreviated PA domestic known as NY) also known as nylon.Bidirectional tensile nylon film has high puncture resistance strength, impact strength, friction strength, bending strength, and has good gas barrier, but its poor heat sealing, when used with good heat sealing substrate film composite products, mainly used for food packaging. (PE film shrink wrapping machine)

O(Oriented): Production Process (Stretch) C (CAST) Casting Extrusion Process (Not Stretch)

OPP (BOPP) -- Stretch Polypropylene CPP-- Unstretched Polypropylene

Al -- VM-- aluminum plating, aluminum foil, a process VMCPP film aluminum plating

PE- Polyethylene (polyethylene) low density LLDPE and high density HDPE (Cling film packaging machine)

Packaging film. According to the material structure is divided into two layers, three layers, four layers, five layers and so on.

Two layers : PET/PE,PET/CPP,OPP/CPP,OPP/PE,NY/CPP.NY/PE,PET/VMCPP,OPP/VMCPP.

Three layers : PET/NY/PE, PET/NY/CPP,PET/AL/PE, PET/AL/CPP,OPP/AL/PE. PET/VMCPP/PE, OPP/VMPET/PE.

Four layers : PET/AL/NY/PE, NY/AL/NY/PE.