PET / AL / PE
PET: excellent printing & stiffness
AL (Aluminum foil): high oxygen, moisture & light barrier
PE: strong heat sealing
PET / NY / PE
NY (Nylon): puncture & tear resistance
Better flexibility than aluminum
PET / VMPET / PE
Metallized PET replaces aluminum at lower cost
Medium–high barrier
BOPP / VMCPP / CPP
High gloss appearance
Cost-effective metallized option
PET / EVOH / PE
EVOH offers excellent oxygen barrier (eco-friendly option)
PET / NY / RCPP
RCPP offers excellent high temperature barrier
Frequently Asked Questions
3-layer laminated bags are made by bonding three different film layers, giving an ideal balance of barrier performance, strength, cost, and print quality. They are the most widely used structure in food, cannabis, liquid, and chemical packaging.
Are 3-layer laminated bags food-grade?
Yes. When produced with food-grade raw materials and adhesives, 3-layer laminated bags can comply with FDA, EU, and other food-contact standards.
Are 3-layer laminated bags suitable for vacuum packaging?
Yes. PET/NY/PE structures are commonly used for vacuum bags because of their high puncture resistance and excellent seal strength.
Can 3-layer laminated bags be used for liquids?
Yes. Structures like PET/NY/PE or PET/AL/PE are ideal for liquid packaging and can be equipped with spouts or strong heat seals to prevent leakage.
Can 3-layer laminated bags be customized?
Absolutely. Custom options include:
Bag size & shape
Material structure
Zippers, valves, spouts, tear notches
Matt, glossy, or soft-touch finish
How long is the shelf life with 3-layer laminated bags?
Shelf life depends on the structure:
Nylon-based structures: 6–12 months
(Actual shelf life depends on product type and storage conditions.)
Metallized or aluminum layers: 12–24 months