Process 
| Electrostatic spraying Used to reduce overspray and
therefore the material waste. Suitable to obtain very
uniform and regular coatings thicknesses also for
external angles and edges, but not for internal ones,
because of the "Faraday effect."
The substrate is connected to the ground and the
particles are negativly charged through a connection of
the spraying-gun to a generator. The particles are
charged while atomizing or after having been atomized
by the air or airless methods.
The difference of charge leads the particles towards the
substrate to obtain the coating. Very expensive
equipment. Not suitable for all kind of paints.
|
Danish Name | Elektrostatisk sprøjtning |
Category | Surface coatings, Painting
|
Materials | Polyritan paints |
Price notes |
| DKK/part | 100 parts | 1000 | 10000 |
| Small (1cm2) | (0.9) | (0.6) | 0.45 |
| Medium (1m2) | 120 | 100 | 85 |
| Large (10m2) | 750 | 650 | 500 |
|
Price date | 01-11-96
|
Price notes | The values between parenthesis don't have any empirical confirmation, but
are just reasonable theoretical extrapolations. Small parts usually aren't
produced in small runs.
|
Additional
info | For electrostatic painting pricing, the material is not as important as labour
related to pre- and post-treatments. Paint usually is a powder and its cost
depends on its color and quality (35-100 DKK/Kg, 4-5 m2/Kg). |