What is Powder Coating?
This type of coating system is the method of applying a uniform tough coating over a substrate. These coatings can be described as “solid paint”, which can be melted to form a continuous film over the substrate. The main difference between a conventional liquid paint and a powder coating is that, the powder coating does not require a solvent to keep the binder and filler parts in a liquid suspension form.
Why use this method of coating?
Powder coating systems are extremely cost efficient. They rely on an electrical charge in both the work-piece and the paint material to ensure uniform deposition and minimal overspray and material losses, prior to heat curing. Powder coating offers durability and good corrosion resistance with exceptional levels of appearance and finish.
The main difference between a conventional liquid paint and a powder coating is that, the powder coating does not require a solvent to keep the binder and filler parts in a liquid suspension form.
How does the Powder Coating System work?
Powder coating is the technique of applying dry paint to a part. The final cured coating is the same as a 2-pack wet paint. In normal wet painting such as house paints, the solids are in suspension in a liquid carrier, which must evaporate before the solid paint coating is produced.In Powder Coating, the powder may be a thermoplastic or a thermoset polymer. It is usually used to create a hard finish that is tougher than conventional paint.
What is this type of coating used for?
These are just a few examples of where you might find powder coating systems being used:
- "White Goods"
- Aluminium extrusions
- Bicycle frames
- Wheels
- Automotive components
What are the advantages of using Powder Coating instead of other coating treatments?
1. Powder coatings emit near zero volatile organic compounds (VOC).
2. Powder coatings can produce much thicker coatings than conventional liquid coatings without running or sagging.
3. Powder coated items generally have fewer appearance differences between horizontally coated surfaces and vertically coated surfaces than liquid coated items.
4. The wide range of specialty effects are easily accomplished using powder coatings that would be impossible to achieve with other coating processes.
Key Properties of Powder Coating
- Appearance
- Range of Colours
- Durability
- Corrosion Protection