Aluminium coil surfaces must stay flawless from factory to final use. Small scratches or dirt can ruin the finish. Consequently, manufacturers use a PE (polyethylene) protective film to guard surfaces during handling, storage, and shipping.
What the PE film does
PE film acts as a temporary shield. It blocks scratches, dust, and contact marks. In addition, it reduces the chance of oxidation by limiting air and moisture contact. Therefore, buyers receive coils ready for forming, coating, or installation without extra cleaning.
Film types and quick guidance
You will find several film options. Choose them by finish and handling needs. For example:
- Standard PE (30–50 µm) for general protection.
- Heavy PE (60–80 µm) for polished or mirror finishes.
- PET or PVC when higher heat tolerance or stiffness is necessary.
Use kraft interleaving when you stack heavy coils to prevent metal-to-metal contact.
How we apply the film — simple steps
First, we clean and degrease the coil surface. Next, we run the coil through lamination machines. We prefer hot lamination for consistent bonding. However, for sensitive finishes, we use cold glue lamination.
Then, we test adhesion and rewind the coil.
Finally, we wrap the coil with a moisture barrier and secure it for transport.
Key technical points to control
Control these specs closely to avoid problems: peel strength, film thickness, clarity, and temperature stability. Aim for peel strength in the 5–10 N per 25 mm range. This range keeps the film secure yet removable by hand. Also, keep films clear so inspectors can read lot numbers without peeling. Finally, ensure the film meets RoHS and REACH if you export to the EU.
Quality checks we run
We perform simple but crucial tests. First, visual checks after lamination to find any bubbles or defects. Then, random peel tests across the coil width to confirm adhesion. We also inspect for residue after peeling. If we see issues, we correct the process and retest. We document every batch and attach photos on request.
Packing and shipping tips that reduce claims
Pack coils on sturdy cores and use desiccants inside outer wraps. Secure coils on wooden pallets to prevent shifting during sea freight. Label each coil with handling notes and peel direction. Doing these steps reduces damage during transloading and long storage.
Why buyers prefer Minh Dung Holdings
At Minh Dung Holdings, we apply PE film in-house with strict controls. Therefore, our coils arrive clean and ready for use. Moreover, we provide adhesion reports and sample photos on request. In short, we reduce rework and disputes. As a result, customers save time and cost.
📩 Email: kinhdoanh@nhomminhdung.vn
☎️ Hotline/WhatsApp: (84) 37.348.6719 – Kevin Nguyen
