PET and VMPET are common layers in flexible packaging, but they serve different purposes. PET is often used as an outer printing layer because it offers good clarity, strength, and print appearance. VMPET is metallized PET, which adds a metallic appearance and improves light and barrier performance.
PET / PE is often used for products that do not require strong light or oxygen protection. PET / VMPET / PE is more suitable for coffee, snacks, powders, and dry food that benefit from better barrier protection.
VMPET is not the same as aluminum foil. Aluminum foil generally provides higher barrier performance, while VMPET is often chosen when a balance between cost, appearance, and barrier is needed.
For high-barrier applications, compare PET / VMPET / PE with PET / AL / PE based on product shelf life, oxygen sensitivity, and budget.
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What is PET in flexible packaging?
PET is commonly used as an outer layer for printing, strength, and dimensional stability.
What is VMPET packaging?
VMPET is metallized PET. It provides a metallic appearance and better light and barrier performance than plain PET.
Is VMPET the same as aluminum foil?
No. VMPET is metallized PET, while aluminum foil generally provides higher barrier performance.
Which is better for coffee packaging?
PET / VMPET / PE or PET / AL / PE are both common. The better option depends on shelf life, aroma protection, and cost.
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