The Right Humidity Measurement in Paint Spray Booths

1. The Right Humidity Measurement in Paint Spray Booths

2. Spray painting existed since 1800’s. It was developed to consume time process when compared to brush painting. • Spray painting is the easiest method to paint in a shorter period of time using spray gun. • The right method to follow is the paint is mixed together with a water or solvent. • Depending on the requirements, the booth is filled with filtered air to avoid the dust particles and exhaust air system to clear the fumes of evaporating solvents that is used in the paint spraying process. About Spray Painting

3. Humidity and Temperature Control System The best conditions to follow while paint inside paint booths are 65 to 75%rh and 20 to 24°C.

4. If in order to reach desired values then either you have to dry or humidify the air. In temperature section the air might need to be heated or cooled depends on outside temperature.

5. Humidity Control System For a spray painting chamber where the air being forced via a duct to spray painting is totally humidified by the combination of water from pressurized water and air sources respectively. Humidity control system comprises of,

6. Nozzle For atomizing the water, mixing water and air directly supply the air into the duct to form humidified air, so that it have relative humidity level

7. Valve For limiting the flow of water from pressurized water source

8. Motor Opening and closing the valve at predetermined rate

9. Based on this method the valve is opened or closed is not less than 1 hour between completely closed or opened positions. Then the motor has an output shaft that rotates not more than one revolution per minute. The water is atomized to produce water particles less than 200 microns.

10. Auto Refinish Situation Paint booth should be a minimum of 55° for all automotive paint. But all automotive paint companies takes time to recoat, cure and flash etc. on 70° and 50% relative humidity. Basic rule have to follow is for every 15° above 70° the coating cures fast. If this rule is below 70° the coating will take twice as long to cure, simply it’s vice versa.

11. Facts The above information is true when it is up to 55° because the catalyst becomes quiescent and it doesn’t crosslink. Since most of the countries are much warmer than 70° at-least few years. Basically, paint companies have variety of reducer and catalyst to compensate for rapid increase in the cure when applying coatings.

12. Why Temperature Control Is Important? Spraying the products takes 30 minutes at 70° to flash before coated with next step; a shop can reduce the time about just 15 minutes provided if the shop has the ability to increase the temperature to 85°.

13. Temperature Settings In Industrial Applications Right temperature for each paint job will be a more intricate process. Average temperature cures paint between 65° and 70° F. You have to carefully look these points What type of coating you are using? Type differs from one paint manufacturer to another Next, what you are painting? Size of the object will affect long duration it takes to dry and setting up the suitable temperature to dry

14. About Our Company We have 30 years of experience in paint booth spray systems with a dedicated professional and well-trained team with advanced technology equipment solutions to make sure that spray booths meet all the requirements that industry, automotive and commercial customer needs throughout the UK.

15. Address: Haltec ltd Burntwood Business Park Burntwood, Staffordshire WS7 3FU Website: www.haltecltd.com Call: 01543 673 408 Keep in Touch

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