You may want to look into electrostatic painting of your components, if you're not doing it already. I used to paint file cabinets in office buildings at night and they would be ready to use the next morning. Electrostatic painting reduces particulates in the air to almost nill, saving money in material and it would also reduce your filtering requirements. I used to use a Ransburgh machine, that was back in the mid 80's, I'm sure the technology is better today. This doesn't really answer your booth question, but if you were to incorporate electrostatic painting, I think it would greatly reduce how complicated your booth has to be. Hope this helps.

GA from me.

Recently I had been doing some research on this aspect for our product.

I agree with #1.

There is a technology called HVLP (High Volume Low Pressure Electrostatic Painting - In this the transfer coefficient is upto 90% (that is the % of paint that will go to target)

Compare that the Airless - max 60%, usually 40-50% or Air assisted spray (20-30%)

The saving in paint itself will be worth the extra cost o the equipment (and the extra cost is not too extra as I found from tha catalogues)

Many thanks to kramarat and sb.

We intend to use electrostatic guns.

Now the main problem is booth itself:

1. Paint booth layout (keeping in mind possibility to use one worker or two);

2. Minimal energy consumption for ventilation at fulfillment the requirements of working conditions and environment protection. I mean a possibility to use 1 ventilator for half of filter width when only one painter is working and to use 2 ventilators and full filer width if both painters are working;

3. We would like to have some place in the paint booth for preliminary drying of products;

4. And last, but no least is a possibility to upgrade the paint booth into pressure type adding 2 intake filters and ventilators.

What type of oven for drying shall be used: electric, gas for direct heating or gas with heat exchanger (we use solvent based paints)?

May be anybody knows about a producer, which manufactures such things?

Best regards

Why do you need ovens? There are solvent based paints that dry on their own in 5 minutes. As far as the booth itself goes, I just googled paint booths and there are lots of sites for the automotive painting industry on the web. I'm sure if you contacted some of those booth manufactures, they could come up with something that would meet your needs.

We work for very special customers and types of paints are strictly determined; time of drying may be up to 24 hr.

If that's the case, you could possibly run into problems going electrostatic. You cannot use conventional coatings for electrostatic painting, it has to be formulated to carry a positive static charge. That said, before looking into electrostatic equipment, you're going to have to get in touch with companies that make electrostatic coatings and see if they have a product that meets or exceeds the spec's for your current material. If such a product is available, the best way to present it to your special customer is to pass some of your savings on to them. As far as the spray booth is concerned, I think your going to have to get a rep from the industry on site to help tailor a system that meets your needs. Hope everything works out.

Is it possible to go for thermosetting powder coatings? that may be more friendly than the liquid dispensers and also more friendly to electrostatics and the oven?