Profile wrapping is a high-speed process that bonds a decorative surface seamlessly around profiles for doors, windows and furniture. Success depends on the match between adhesive, film, profile and machine.
Material combinations
| Profile | Wrap | Recommended system |
|---|---|---|
| MDF | Paper foil | EVA hot melt |
| MDF | PVC / PP film | PUR hot melt + primer |
| PVC window profile | Decor film | Wash primer + PUR |
| Aluminium | PVC / acrylic film | Solvent primer + PUR |
| Solid wood | Veneer | PVAc or EVA hot melt |
Why primer matters
The back of PVC and PP films has low surface energy. If the film is not factory-primed, apply a solvent-based primer. On PVC window profiles, extrusion residues must be removed with a wash primer for lasting adhesion.
Process settings
- Adhesive temperature: usually 120–140 °C for PUR; too hot can distort the film.
- Coat weight: 50–80 g/m² on MDF and 40–60 g/m² on PVC is a good starting point.
- Film preheating: keeps the film flexible so it follows corners.
- Pressure rollers: set in sequence to the profile geometry; abrupt angles lift the film.
Common problems
- Lifting at corners: too little pressure, cold adhesive or over-tensioned film.
- Bubbles: moisture or dust in the MDF; clean and dry the profile.
- Edge opening: missing primer or incompatible adhesive.
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