Chemical Pre-treatment

Coils and sheets are degreased and chromium-free chemically converted on both sides before coating.

Top Side

Product top side is prepainted with a powder polyester paint. Powder paint is TGIC free. On customer request other liquid paint systems are available: polyamide, polyester, polyurethane, PVdF (polyvinylidenfluoride). A wide range of colours is available; on specific requests new colours can be designed.

Typical thickness: 55 [µm] (min. 45 [µm])
Typical gloss: (acc. to ECCA T2)

Reverse Side

Customers can request that the reverse side is protected by a backing coat polyester (semi transparent) suitable for adhesive bonding with most glues and foams.
typical thickness: 4 [µm]

brilliance level:

• 30 [gloss units] (coupled with top sides < 40 units)
• 80 [gloss units] (coupled with top sides ≥ 40 units)

Colour Tolerances

Measures on colour (DE values, CIELAB system (acc. to ECCA T3 and ISO 7724:1984)) is referred to Novelis master colour
This method can’t be used for transparent and metallic colours, special effects and for embossed surfaces.

Coating Hardness [ECCA T 4]

Hardness: ≥ pencil H

Protective film

The protective film (transparent or Black & White) is applied to the coated aluminium coils and sheets especially used in the production of façades.
The protective film must be removed at the latest 6 (six) months after delivery and is for external application (UV resistant).

• chemical composition: polyethylene
• typical thickness: 50/80 [µm]
• adhesive: acrylic/rubber glue