Aluminum Furniture

Aluminum Furniture 1. Name: Powder Coating 2. More adhesive than the oxides 3. All-weather and UV-stabilized

Aluminum Furniture

Name: Powder Coating

It presents a surface to the powder which favours adhesion more than the oxides that form very readily on aluminium surfaces, andIt reduces the incidence of under film corrosion, which may occur at holidays in the coating.

          The powder is applied with an electrostatic spray gun to a part that is at earth (or  

          ground) potential.

          Before the powder is sent to the gun it is fluidised:

to separate the individual grains of powder and so improve the electrostatic charge that can be applied to the powder andso that the powder flows more easily to the gun.

Because the powder particles are electrostatically charged, the powder wraps 

around to the back of the part as it passes by towards the air offtake system. The powder will remain attached to the part as long as some of the electrostatic charge

remains on the powder. To obtain the final solid, tough, abrasion resistant coating the 

powder coated items are placed in an oven and heated to temperatures that range from

160 to 210 degrees C (depending on the powder)

Under the influence of heat a thermosetting powder goes through 4 stages to full cure.

MELT, FLOW, GEL, CURE

The final coating is continuous and will vary from high gloss to flat matt depending on the

design of the powder by the supplier.

Aluminum Furniture