TAKING THE GUESSWORK OUT OF POWDER COATING 

AKZO NOBEL APPROVED APPLICATOR FOR THE INTERPON PZ 770 SYSTEM - ANTI CORROSIVE POWDERS - MARINE ENVIRONMENT POWDERS ISO 12944 C5-M - ANTI BACTERIAL POWDERS - ARCHITECTURAL POWDERS - INDUSTRIAL POWDERS - RAL COLOURS - BS 381C COLOURS - SPECIAL COLOURS

Interpon PZ770 v Hot Dip Galvanising

The elimination of galvanizing gives a more aesthetic appearance. Because of the inherent problems with galvanizing, i.e. the need to grind inclusions and drips in the galvanizing, problems with over galvanizing on welded areas, wire marks where galvanized parts have been hung, and most importantly, out gassing and pin holing in the powder coating.

The result using Interpon PZ770 is a perfect visual coating, with a high performance paint system that can be applied to mild steel fabrications where visual appearance and performance is paramount.

Another major benefit to customers is that parts that should be galvanized but can not be due to their construction i.e. box section (filling with zinc), and thin metal (warping), can now be powder coated for external use.

If the coating is to be used in an environment where harsh physical damage can occur, i.e. supermarket trolley bays, galvanizing would have to be used as the protective layer. 

The PZ system is an all powder answer to corrosion protection. The PZ 770 system is an epoxy powder primer rich in zinc, the top coat is an Interpon D36 or D525 offered in a wide range of colours and 3 gloss levels.

 If a highly corrosive environment is of concern (marine environment), an intermediate coat of Interpon BPP 330 powder can be applied between the PZ770 Primer and Topcoat to give an effective marine finish.  

As you can see in the photos above Hot Dip Galvanising has runs, drips and inclusions which have to be removed prior to painting. This then exposes the bare metal substrate and the galvanising protection is lost.

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