What is Powder Coating ?

What is Powder Coating ?

Powder coating is a type of coating that is applied as a free-flowing, dry powder. 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. The coating is typically applied electrostatically and is then cured under heat to allow it to flow and form a “skin”. 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. Powder coating is mainly used for coating of metals, such as household appliances, steel fence, aluminium extrusions, drum hardware, and automobile and bicycle parts.

How Powder Coating Works
Powder coatings are based on polymer resin systems, combined with curatives, pigments, levelling agents, flow modifiers, and other additives.  These ingredients are melt mixed, cooled, and ground into a uniform powder similar to baking flour.  A process called electrostatic spray deposition (ESD) is typically used to achieve the application of the powder coating to a metal substrate.  This application method uses a spray gun, which applies an electrostatic charge to the powder particles, which are then attracted to the grounded part.  After application of the powder coating, the parts enter a curing oven where, with the addition of heat, the coating chemically reacts to produce long molecular chains, resulting in high cross-link density. These molecular chains are very resistant to breakdown.  This type of application is the most common method of applying powders.  Powder coatings can also be applied to non-metallic substrates such as plastics and medium density fiberboard (MDF).



Sometimes a powder coating is applied during a fluidized bed application.  Preheated parts are dipped in a hopper of fluidizing powder and the coating melts, and flows out on the part.  Post cure may be needed depending on the mass and temperature of the part and the type of powder used.  No matter which application process is utilized, powder coatings are easy to use, environmentally friendly, cost effective, and tough!

 
Some of the advantages powder coating has over the conventional liquid paint technology are:
  • Near zero emission of volatile organic compounds (which may be harmful & toxic).
  • Comparatively thicker coatings without running or sagging.
  • Overspray is recycled, thus minimizing the waste of powder to almost zero.
  • Produces less hazardous waste.
  • There is no need to maintain viscosity balance.
  • Rejection of material to be coated is highly minimized because damaged coating can be blown off and re-coated.
Durability of Powder Coating
Powder coating is a high-quality finish found on thousands of products you come in contact with each day.  Powder coating protects the roughest, toughest machinery as well as the household items you depend on daily.  It provides a more durable finish than liquid paints can offer, while still providing an attractive finish.  Powder coated products are more resistant to diminished coating quality as a result of impact, moisture, chemicals, utraviolet light, and other extreme weather conditions. In turn, this reduces the risk of scratches, chipping, abrasions, corrosion, fading, and other wear issues.
It’s tough. It looks great. And it lasts a long, long time.  In addition to being durable, powder coating is an attractive choice due to environmental advantages.

Please do write to us and our team will visit your premises for the product demonstration.
For further details, p
lease do visit  : 
www.a-1fenceproducts.com 
A-1 Fence Products Company Pvt. Ltd.
21, Raju Industrial Estate,
Dahisar ( East ),
Mumbai – 401 104. INDIA
Tel. : +91 22 2897 7540 / 7252

contact detail

A-1 Fence Products Company Pvt. Ltd.
21, Raju Industrial Estate,
Penkar Pada Road,
Near Dahisar Check Naka, Mira,
Dist. Thane, Mumbai- 401 104.

Phone. 91-22-2897 7540/2897 7252.
Fax. 91-22-2848 5014
Mail. sales@a1fenceproducts.com

About us

A-1 fence products is a manufacturer of high quality steel fencing with core competency in customized fencing solutions.

Read More