① Outer layer: BOPP / Matt BOPP / Pearlized BOPP / PET / PA / Natural Kraft / PLA
The outer layer in general adds elongation strength along with providing a surface to print on.
② Inter layer: PET / AL / VMPET
The inter layer serves to keep the product inside fresh and to protect the product inside against water vapor, oxygen and sunlight, etc.
③ Innermost layer: PE / CPP
The innermost layer mainly provides good sealability.
Material Structure Recommendation
Packing Product | Material Structure | Properties Required |
Tea / Coffee | PET/VMPET/PE PET/AL/PE BOPP/VMPET/PE BOPP/AL/PE | Excellent aroma and light barrier, good sealability |
Nuts | BOPP/CPP BOPP/VMPET/CPP PET/PE | Good moisture barrier, good barrier qualities, good sealability |
Biscuits / Sweets | BOPP/CPP BOPP/VMCPP | Good moisture barrier, high transparency, good sealability |
Dry powder | PET/VMPET/PE PET/AL/PE BOPP/VMPET/PE | Excellent aroma and light barrier, good sealability |
Pet food | PET/PE PET/VMPET/PE | High barrier, good sealability |
Bakery products | BOPP/CPP | High transparency, good moisture barrier, economical |
