Flexible Packaging Structure Explained breaks down the layers and materials used in modern flexible packaging.
Common flexible packaging structures include PET / PE, PET / VMPET / PE, PET / AL / PE, kraft paper / VMPET / PE, and recyclable MDOPE / PE.
PET provides clarity and printability, VMPET provides barrier, AL provides superior barrier, PE provides sealing, and MDOPE provides recyclability.
Size selection should start with the actual product. Coffee beans, powder, candy, snacks, pet treats, frozen food, and liquid products can have different volume requirements even at the same weight.
If the product needs stronger oxygen, light, aroma, or moisture protection, a high-barrier material should be considered.
Artwork should be created after the pouch size and dieline are confirmed to avoid layout mistakes and production delays.
Recommended packaging path
Start with the related calculator or packaging tool, compare your product with the related product page, and then request a free custom dieline before final artwork.
Need help with your packaging?
Send your product type, filling weight, material requirement, size target, and quantity. We can help with size recommendation, material structure, dieline, and quote support.
Request Free DielineCommon keywords covered
flexible packaging structure, packaging layers, material composition
FAQ
What do the letters mean in packaging structures?
PET=clarity, VMPET=metallized barrier, AL=aluminum foil barrier, PE=sealing layer, MDOPE=recyclable barrier.
Why are multiple layers used?
Multiple layers provide different functions: clarity, barrier, sealing, and protection. Each layer serves a specific purpose.
How many layers do I need?
It depends on your product requirements. Simple products may need 2-3 layers, while sensitive products may need 4-5 layers.
Can I customize the structure?
Yes. Custom structures are available to meet specific barrier and functional requirements.
Next step
Confirm your packaging size, material, and dieline before creating final artwork. This helps reduce printing mistakes, wrong panel layout, poor shelf appearance, and production delays.