Description
PET/AL/PE Laminated Film is a three-layer flexible packaging material consisting of PET, aluminum foil and PE. Each layer performs a specific function within the structure: PET provides strength and a printable outer surface, aluminum foil provides high barrier protection, and PE provides the inner heat-sealing layer.
This combination is widely considered for packaging applications where ordinary plastic film does not provide sufficient protection against light, moisture or gases. The film can be supplied in roll form for further conversion into packaging bags, pouches and other flexible packaging products.
What Is PET/AL/PE Laminated Film?
PET/AL/PE is a three-layer laminated structure:
PET / Aluminum Foil / PE
The three materials have different roles:
- PET: outer support layer with good strength, dimensional stability and printing suitability.
- Aluminum Foil: high-barrier middle layer that helps protect the package contents from light, moisture and gases.
- PE: flexible inner layer that provides heat-sealing performance.
By combining these materials, the laminate can provide a balance between mechanical performance, barrier protection and sealing performance.
PET/AL/PE Three-Layer Structure
| Layer | Material | Main Function |
|---|---|---|
| Outer Layer | PET | Provides strength, dimensional stability and a suitable surface for printing. |
| Barrier Layer | Aluminum Foil | Provides high barrier protection against light, moisture and gases. |
| Inner Layer | PE | Provides flexibility and heat-sealing performance. |
Why Use Aluminum Foil in the Middle Layer?
The aluminum foil layer is the key difference between PET/AL/PE and conventional plastic laminates such as PET/PE or BOPP/PE.
Aluminum foil provides a strong barrier against external factors that can affect packaged products. It can significantly reduce exposure to light, moisture and gases, helping protect sensitive products during storage and transportation.
This makes aluminum foil laminated structures particularly useful when packaging performance requires more than transparency, flexibility and heat sealing.
Key Benefits of PET/AL/PE Laminated Film
| Feature | Benefit |
|---|---|
| High Barrier | The aluminum foil layer provides strong protection against light, moisture and gases. |
| Light Protection | The aluminum layer blocks light, helping protect light-sensitive products. |
| Outer Strength | PET contributes mechanical strength and dimensional stability. |
| Heat Sealing | PE provides the inner heat-sealable surface. |
| Custom Printing | The PET outer layer can be used for customized packaging graphics. |
PET/AL/PE vs. PET/PE
The main difference is the aluminum foil layer. PET/PE is a two-layer plastic laminate, while PET/AL/PE adds an aluminum barrier layer between PET and PE.
| Feature | PET/AL/PE | PET/PE |
|---|---|---|
| Structure | PET / Aluminum Foil / PE | PET / PE |
| Light Barrier | High | Lower than aluminum foil laminate |
| Moisture Barrier | Very high barrier potential | Depends on film grades and structure |
| Gas Barrier | Very high barrier potential | Lower than aluminum foil structure |
| Heat Sealing | PE | PE |
| Typical Selection | Products requiring strong barrier protection | Applications where an aluminum barrier is not required |
Applications of PET/AL/PE Laminated Film
- Food packaging
- Pharmaceutical and healthcare packaging
- Moisture-sensitive products
- Light-sensitive products
- Dry products requiring high barrier protection
- Flexible packaging bags
- High-barrier pouches
- Industrial and specialty packaging
The appropriate structure should be selected according to the packaged product, required shelf life, filling process, sealing conditions and barrier requirements.
Custom PET/AL/PE Laminated Film
| Customization | Available Options |
|---|---|
| Structure | PET / AL / PE |
| Total Thickness | Customized according to application requirements |
| Film Width | Customized according to converting requirements |
| Roll Length | Customized according to order requirements |
| Printing | Custom printing available |
What Information Should You Provide for a Quote?
For a customized PET/AL/PE laminated film quotation, buyers should provide:
- Packaging application
- Required film structure
- Required total thickness
- Film width
- Roll length
- Printing requirements
- Finished bag or pouch dimensions
- Sealing method
- Estimated order quantity
Frequently Asked Questions
What is PET/AL/PE laminated film?
PET/AL/PE is a three-layer laminated film consisting of PET, aluminum foil and PE. PET provides the outer support layer, aluminum foil provides high barrier protection, and PE provides heat sealing.
Is PET/AL/PE a high-barrier packaging film?
Yes. The aluminum foil layer provides strong barrier protection against light, moisture and gases, making the structure suitable for many high-barrier packaging applications.
What does AL mean in PET/AL/PE?
AL refers to aluminum foil, which functions as the central barrier layer in the laminate.
Can PET/AL/PE be printed?
Yes. Custom printing can be provided according to the selected PET film, printing process and packaging artwork.
Is PET/AL/PE heat sealable?
Yes. The PE inner layer provides the heat-sealing surface for suitable bag and pouch manufacturing processes.
Can PET/AL/PE be used for food packaging?
It can be used for suitable food packaging applications where the required material specifications, regulatory requirements and packaging conditions are met.
Request a Quote for PET/AL/PE Laminated Film
If you are sourcing PET/AL/PE laminated film for high-barrier flexible packaging, send ZXCOOL your required structure, thickness, width, roll length, printing requirements and intended application.
Contact ZXCOOL to discuss your PET/AL/PE laminated film requirements and request a customized quotation.
Ji-hoon –
I run a small-to-mid packaging supply company in Gyeonggi-do, and we source films for local food manufacturers—mostly fermented products like kimchi, doenjang (soybean paste), and pickled perilla leaves. We’d been avoiding aluminium foil laminates for years because they were either too expensive or came with long lead times from Japan. Then I came across this PET/AL/PE film from ZXCOOL. Price was surprisingly competitive ($0.89–$2.10/m²), so I ordered a trial roll.
The difference was immediate. Our client who makes vacuum-packed kimchi reported that the product stayed crisp and vibrant for nearly 10 days in summer delivery tests—previously, with metallized films, they’d see discoloration and off-gassing by day 5. The aluminium layer truly blocks out everything: light, moisture, oxygen. That’s critical for products with active fermentation.
One caveat—the aluminium makes the film noticeably stiffer than VMPET alternatives. Our bag-making machine needed a minor adjustment on the forming tube and sealing pressure, but after that, production ran smoothly at full speed. No sealing failures so far.
Honestly, for anyone in Korea’s fermented food, ginseng extract, or even instant coffee pouches, this film is a no-brainer. ZXCOOL also offered custom width and roll length, which was a plus. We’re now in talks for regular monthly shipments.