How powder paint is made

Powder paint has already bypassed liquid by the popularity among manufacturers. In addition to its beautiful decorative effect, it has a number of properties that protect the product from negative effects.

The powder paint market is growing and developing every year. New amazing colors and textures are added.

In this article we will talk about what and how powder paint is made and what results in such a variety of effects.

Powder paint: composition

Powder paint has a huge variety of components. The film-forming agents and the air environment are required.

The selection of the constituents of the powder directly affects many characteristics of the paint. For example, the density of powder paint depends on the density of resins, fillers, and pigments. The norm is a figure of 200 to 800 kg / sq.m. The lower the density, the easier it will be to spray paint. Therefore, paint manufacturers always keep a close eye on this indicator.

The paints may be epoxy, polyester and polyethylene.

In the composition of the powder must be:

• Primides. These are the hardeners that are responsible for the stability of the paint.
• Isocinaurate triglycerides. These substances are required for the powder to melt well.
• Barium sulfates. They are used as a filler mass of powder.
• TR-88 filling agents. They are responsible for the fluidity of the paint and the smoothness of the coating.
• Benzoins. These substances are required to prevent air bubbles from forming on the coating.

In order to obtain matte, special matte hardeners are added to the powder.

Up to 50% of the paint composition is pigments, special fillers and additives. They are different in different paints. It is with their help that the powder gets color and special effect.

The raw material used to make the powder paint affects the product’s operating temperature. Usually the paint melts at 180 °C to 200 °C for 10-30 minutes.

It is very important that all paint components are of good quality, otherwise the final coating will be uneven and defective. In addition, poor quality powder may not settle at all on the surface. Responsible paint manufacturers always have laboratories that control the quality of raw materials and do not allow bad products to get into the powder.

Technology of production of powder paint

And now more about how powder paint is made. Like liquid paints, powders must meet a variety of technological standards and requirements.

Powder paints are made in several stages.

Initially, the quality of the raw materials that came into production is checked. Each laboratory employee is responsible for its specific component. This is to prevent substandard products from getting into the powder.

After that, according to the recipe, each component of the future paint is weighed in the dosing machine. This data is necessarily recorded.

Suspended components are mixed with special mixers. To keep the powder from overheating, they are equipped with cooling systems.

Then the future paint is sent to the extruder, where the components are melted and mixed.

The molten powder passes through the rollers, turning into a strip up to 1.5 millimeters thick. Then this tape should freeze. The solidified workpiece is cut into plates and then ground into a shredder in powder. It is equipped with a special filter that traps too large particles and sends them back for grinding.

The crushed mixture passes a fine filter. It removes powder dust.

Thus, in the end remains exclusively usable powder, which is sent to buyers.