2020-05-26
Powder spraying is to use powder spraying equipment (electrostatic spraying machine) to spray powder coating onto the surface of the workpiece. Under the action of static electricity, the powder will be uniformly adsorbed on the surface of the workpiece to form a powder coating; Baking, leveling and curing, and the final coatings with different effects (different types of powder coating effects) Under the same effect of spray paint.
The coating is made of special resin, pigment and filler, curing agent and other auxiliary agents, mixed in a certain proportion, and then prepared by hot extrusion molding, crushing and sieving and other processes. They are storage stable at room temperature. After electrostatic spraying, friction spraying (thermosetting method) or fluidized bed dip coating (thermoplastic method), they are heated, baked, melted and solidified to form a flat and bright permanent coating to achieve decoration And the purpose of anti-corrosion.
Its characteristics are:
1. The product is non-toxic, free of solvents and volatile and toxic substances, so it has no pollution problems such as poisoning, fire, and "three wastes" discharge, which fully meets the requirements of the National Environmental Protection Law.
2. The utilization rate of raw materials is high. The powder produced by some well-known brand powder suppliers can be recycled for oversprayed powder. The highest utilization rate can even reach more than 99%.
3. After pre-treatment of the object to be coated, one-time construction, without primer, you can get a coating film of sufficient thickness, easy to achieve automated operation, high production efficiency, and reduce costs.
4. The coating is dense, the adhesion, impact strength and toughness are good, the corner coverage is high, and it has excellent chemical resistance and electrical insulation performance.
5. Storage and transportation of powder coatings are safe and convenient.
Compared with the traditional paint process, the advantages of powder coating are:
1. High efficiency: Because it is a one-time film formation, it can increase productivity by 30-40% 2. Energy saving: reduce energy consumption by about 30%
3. Less pollution: no organic solvent volatilization (excluding toluene, xylene and other harmful gases in paints and coatings).
4. High coating utilization rate: up to 95% or more, and the powder can be used many times after recycling.
5. Good coating film performance: the thickness of one-time film formation can reach 50-80μm, and its comprehensive indicators such as adhesion and corrosion resistance are better than the paint process.
6. High yield: Before uncuring, it can be re-sprayed twice. There are many types of powder coating process, common are electrostatic spraying and plastic dipping.
Powder coating is a new type of solvent-free 100% solid powder coating. It has the characteristics of no solvent, no pollution, saving energy and resources, reducing labor intensity and high mechanical strength of the coating film.
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浙公網(wǎng)安備33020602000705號
浙公網(wǎng)安備33020602000705號
