Posted: 29 October 2018
People remark on the eye-catching finishes and facades as new structures have emerged during the Christchurch rebuild. ENI has been involved in some of them, such as the Margaret Mahy Playground and the street-scapes in Evolution Square.
Powder coating is one of the secrets.
"Since the rebuild, all the fancy facades on the new buildings, in all the great colours - they're all powder coated," says Dave Fletcher, ENI's Business Development Manager. "Durability is the key feature. It's highly resistant to chemical contamination and is an anti-graffiti substance."
What exactly is powder coating? It's a dry finishing process that protects not only tough and hardy machinery, but buildings and household items as well. It's been around since the 1960s, but in recent years technological advances have made it even more durable - way more so than liquid paint coatings.
Construction companies typically specify powder coatings for a high-quality, durable finish. What this does is ensure:
- Maximised production
- Improved efficiencies
- Simplified environmental compliance
- Excellent performance properties.
Powder coating has both protective and decorative finishes, and there's an almost limitless range of colours available. Pretty much any shade you can find in a paint shop can be done in powder coating.
Powder coating vs. other coatings
A big plus is that powder coatings are environmentally friendly. They contain no solvents and release little or no amount of Volatile Organic Compounds (VOC) into the atmosphere, meaning your business saves by not having to invest in costly pollution control equipment.
Powder coatings also:
- Produce much thicker coatings than conventional liquid coatings like paint
- Have fewer appearance differences between horizontally and vertically coated surfaces
- Allow for a wide range of speciality effects that aren't possible with other coatings. "It keeps its gloss," Dave explains. "It's highly resistant to UV."
The ENI approach
Our approach is based on the individuality of each client's needs. We use only pure powder (not recycled powder) for the best quality finish. Depending on the material to be coated, we can draw on the most appropriate treatment method and so create the conditions for best adhesion and corrosion protection. And we're a certified applicator of Dulux Duralloy and Duratec applications.
The powder coating process
Step 1: "First, the material - the metal - gets de-ionised," Dave explains. "That's like sanding something down before you paint it. It's called pre-treatment. It also removes any contaminants."
Step 2: "Then it goes into a spray booth - think of what you might have seen at a panel-beaters," says Dave. "That applies the powder to the metal."
Step 3: "Then it's into the oven," Dave continues. "That's around 250 degrees, and it'll bake in there for about 25 minutes."
ENI boasts one of the largest powder coating facilities in Christchurch. With both top and bottom ovens, we can handle really heavy metal. And we can run the ovens 24/7. “If someone just walks in off the street and wants powder coating done and nothing else, we can do that,” says Dave. “They don’t have to be a client that’s got a whole project with us.”
What it comes down to is superior durability. “If you want something to last,” says Dave, “get it powder coated.”
Blog categories: Powder Coating