Based on the material of the bottle neck, aluminum foil liners are generally classified into two main types: PET aluminum foil liners and PE aluminum foil liners. These two types differ significantly in structure, heat-seal materials, and compatibility, and understanding these differences helps customers choose and use them more effectively.
1. PET Aluminum Foil Liner
Structure Composition: Cardboard + Aluminum + Polyester heat-seal film
Sealing Material: Polyester (PET)
Suitable Bottle Neck: For heat sealing with PET bottle necks
Function & Use: Provides reliable sealing to prevent leakage
Recommended Storage Conditions: Relative humidity 40%–65%, temperature 0℃–30℃
Total Thickness: 0.6mm ± 0.1mm
2. PE Aluminum Foil Liner
Structure Composition: Cardboard + Polyester + Aluminum + Polyethylene
Sealing Material: Polyethylene (PE)
Suitable Bottle Neck: For heat sealing with PE bottle necks
Function & Use: Offers sealing protection, moisture, and contamination prevention
Recommended Storage Conditions: Relative humidity 40%–65%, temperature 0℃–30℃
Total Thickness: 0.6mm ± 0.1mm
Selection Recommendations
If the bottle neck is made of PET, we recommend using PET aluminum foil liners to ensure optimal heat-sealing compatibility.
If the bottle neck is made of HDPE or LDPE, PE aluminum foil liners are recommended to avoid sealing failure.
For long-term storage, please follow the recommended humidity and temperature range to prevent material deformation or degradation.
Mingda offers professional sealing solutions based on the material of your bottle neck. We support customized services and sample testing to ensure stable and reliable sealing quality.