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Trime - Lavorazione Lamiere
 
Trime - Lavorazione Lamiere
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  PAINTING
There are two types of sheet metal painting: liquid painting and powder painting.

Painting with spray liquid paint products offers a wide range of plant design solutions, determined by the number of possible cycles, the characteristics of the paint (single component or two components, etc.)

Preparation depends on the type of material and on the state of the surface to be painted. There are a series of application cycles (base coat and/or final transparent protective coat).
 


Anti-corrosion aspects or aesthetic finishes are taken into consideration based on the cost involved.
Generally, solvent paint products require simpler treatment cycles to water-soluble products but users should abide by hard and fast rules as regards the consequences of inhaling the solvent.

Powder painting is an excellent solution for different industrial products and is used more and more due to the total absence of solvent emission, the total recovery of overspray and for its facility of application.

Powder painting is carried out in specific plants which are equipped with an application booth with electrostatic pistols, and a suspended conveyor belt where the parts can be hung.

Powder painting is effected by polymerization: the pigmented powder is sprayed onto the product and clings on electro-statically. It is then fused in the polymer oven at 180°for 20 minutes.

Once the powder has melted, the product is cooled and is ready for a final check. All of this occurs in a continuous cycle.

Powder painting (commonly called plastification) is excellent in terms of finish and of mechanical capacity.
At an industrial level, this process is used undisputedly: from a quality point of view, it can be applied easily, and from an ecological point of view, it doesn’t harm either operators or the environment.

More and more industries choose to use powder painting as it gives better results, in terms of a high aesthetic quality, and permits greater thicknesses of paint to be applied, in comparison with liquid paint, which means better resistance to external atmospheric elements.

Dyes can be achieved with all desired colour tones.

On a world-scale, it is evident that the percentage of powder paint use has completely overturned that of liquid paint, going from 15% to liquid paint’s 85%, to 75% at the present time, and this figure is certain to increase in favour of powder paints.
 
 
 

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