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Powder coating

Powder coating

Powder lacquer or powder coating is an electrostatic paint process that uses compressed air to apply negatively charged powder to a positively charged product. This allows the powder to temporarily adhere to the product, after which it is placed in a muffling furnace. The properties of a powder coating process are that, after the powder (1-120 pm) has been applied, it melted at a high temperature - usually above 50 degrees Celsius - so that it adheres to the substrate. Because of the electrostatic principle (voltage difference between the powder and the product), the powder sticks to the product. Charging the powder particles can be done either by creating a force field or by creating friction in the gun.

Advantages

The advantage of powder coating is that almost no solvents are released during this lacquering process. This means that the powder coating process is very environmentally friendly. In combination with pre-treatments such as hot-dip galvanising or CDP, powder coating offers extremely durable protection against corrosion and weather conditions. The powders used normally have a polyester, epoxy, polyethylene or hybrid (combination of polyester and epoxy) base.

Environment en Quality requirements

The muffle furnace process is carried out in accordance with VMRG quality requirements and guidelines from 1993 and the relevant Gualicoat regulations. (the VMRG is the Association of the sector for Metal Window Frames and Facades)

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