SPECIFYING ARCHITECTURAL ALUMINIUM POWDER COATING
SPECIFYING ARCHITECTURAL ALUMINIUM POWDER COATING
Chris Mansfield, Chair of QUALICOAT UK & Ireland, highlights the key factors that specifiers need to consider when choosing architectural powder coating.
Source:
AkzoNobel Powder Coatings | Matt Bronze
To specify powder-coated products with confidence, it’s important to understand the basic process. There are two steps to powder coating: the cleaning and pretreatment of the aluminium, and the powder coating itself.
Pretreatment prepares the aluminium surface to ensure a strong bond and protect against corrosion. The process typically includes cleaning and an etch stage to remove contaminants and a subsequent passivation or conversion coating to ‘seal’ the surface of the aluminium, which also provides a ‘key’ for the adherence of the coating.