Comparative Adhesive Strengths for Different Aluminum Profile Types

During the production of protective films for door and window profiles, adhesives, which are elastic polymers, are applied to create a tight bond with surfaces. These adhesives can penetrate grooves and increase the contact area. Pressure-sensitive adhesives (PSAs) gain strength with incredible peeling speed and depend on proper surface wetting for optimal adhesion.

The base film for profile protection is produced through blowing, casting, and rolling, followed by corona treatment and coating with liquid adhesives. The drying stage ensures the film’s readiness for application.

Different surface treatments require specific adhesive strengths. For example:

• Frosted aluminum profiles: Require the highest adhesive strength, around 500g, due to their delicate surface and aesthetic needs.
• Polished aluminum profiles: Generally need 180g of adhesive strength.
• Electrophoretic coating profiles Need the lowest adhesive strength, about 100g, as they effectively resist environmental exposure.
• Powder-coated aluminum profiles: With superior corrosion resistance, they need a moderate adhesive strength of approximately 250g.

Each adhesive and production technique suits specific surface and performance requirements.