Thermal laminating film is a laminate that bonds to paper and other materials through heating, used to protect documents, photos, and printed materials. It is commonly used in a variety of applications, including office, educational, packaging, and video production. So, how is a roll of high-quality thermal lamination film produced?
1. Raw Material Preparation
Thermal lamination film consists of two parts:
Backing material: Typically PET or BOPP film, offering excellent transparency and strength
Hot-melt adhesive layer: Primarily EVA hot-melt adhesive, used to bond to the paper after heating
2. Hot-melt adhesive coating
On a dedicated coating machine, melted EVA adhesive is evenly applied to one side of the film, with a thickness ranging from a few microns to tens of microns.
3. Drying and Cooling
After coating, the film enters a drying tunnel to ensure stable adhesive adhesion. It then passes over cooling rollers to cool down before being wound into a large roll.
4. Winding and Slitting
The coated mother roll is slit into various widths and lengths, such as:
A3/A4/A5 sizes
200m/500m/1000m rolls
Customized core sizes (1"/3") are also available to meet the needs of different laminating machines.
5. Packaging and Inspection
Each roll undergoes quality inspections for appearance, thickness, adhesion, and heat sealing performance before shipment. Approved rolls are dust-proof packaged and shipped.