Types of Spray Paint Booths and Their Benefits
Spray paint booths were once all about car shops, but several modern applications have since emerged. This technology has now truly offered great benefits to different manufacturing industries that make everything, from the tiniest circuit boards and even the most massive equipment.
Besides being an efficient finishing method, spray paint booths also provide a safe environment for workers, being compliant with the OSHA (Occupational Safety and Health Administration), NEC (National Electrical Code) and other security groups.
Types of Spray Booths
As with everything else in the manufacturing business, there is a spray paint booth created for your particular needs. There are models made for plastic, automobiles, furniture and more.
Here are the main types of spray booths you will find nowadays:
These models have a rear exhaust, a ceiling and two sidewalls. Air flows right through the front and leaves from the exhaust at the back. Open booths are typically used for woodwork and for furniture finishes. These booths are also found in auto manufacturing and repair facilities.
This type of spray booth is enclosed, and exhausts as much air as it draws in. In colder environments, temperature control and air purity are maintained with the use of an air makeup system or heater. This is a usual method of manufacturing and refinishing electronics and motor vehicles, where the quality of the finish is heavily influenced by the cleanliness of the environment.
In non-pressurized booths, air is drawn from and expelled into the building with the use of filters. Sometimes, a heater air makeup unit is required. A lot of industries, such as fiberglass, auto manufacturing and metalwork, use non-pressurized booths.
Paint Booth Configurations
The airflow configurations of pressurized and non-pressurized paint booths can vary widely, and each one comes with its own advantages and setbacks.
Cross flow booths have air moving from the front to the back and side to side.
In downdraft booths, air comes from the ceiling going down to the floor. You will find several styles with this configuration, with the “pit” style (the exhaust system includes an excavated pit and tunnel) being the most common.
Semi-downdraft booths have air flowing from the top of the ceiling going to the rear, while in side downdraft booths, it comes in through the ceiling and then travels to the exhaust filters installed on the two sidewalls.
Each booth is suitable for certain applications, depending on airflow needs and other requirements. When finish quality is vital, for example, the best options are side downdraft and downdraft booths.
If cost is an issue, semi-downdraft and cross draft are preferable. Lastly, if space is at a premium, the best option is often the cross draft model.