Whether it is FDM, SLA, DLP, MJF, SLS or any other printing process, fine particles are emitted during the additive manufacturing process. Studies conducted by the Georgia Institute of Technology and Fraunhofer WKI have shown that more than 200 types of Volatile Organic Compounds (VOCs) and Ultra Fine Particles (UFPs) can be emitted during the printing of standard polymers such as PLA, PETG or ABS. These fine particles or VOCs can cause unpleasant odors and potentially harm health in the absence of proper ventilation.
In order to prevent the risks linked to the particles emitted and to protect the users and operators of 3D printers, the company specialized in air extraction BOFA has developed an adapted protection solution. The PrintPRO is a range of air purification systems, specially designed for 3D printing. Marketed in France and Europe by the French distributor Atome3D, this range aims to ensure a healthy working environment.
The characteristics of BOFA extractors
The range developed by BOFA includes 4 machines suitable for all types of 3D printers and includes the PrintPRO 1, 2, 3 and 4, sold respectively at a price of €390, €649.90, €729.90 and €1,490.90 without tax. The main differences between these machines are the extraction power, the volume and the filtration level.
All extractors in the range have two levels of filtration. The first is a Hepa filter that filters 99.97% of particles as small as 0.3 microns and removes harmful particles; the second is an activated carbon filter that captures odors, gases and nanoparticles.
BOFA’s PrintoPRO system purifies the air with interchangeable filters
In order to filter optimally, the activated carbon needs to capture the air long enough to purify it. In order to ensure sufficient air circulation time, BOFA has developed a labyrinth-like network system to slow down the air flow in the activated carbon filter. In order to ensure long-lasting filtration, BOFA has equipped the PrintPRO extractors with sensors that monitor the efficiency and service life of the filters. Unlike the PrintPRO 1, the PrintPRO 2, 3 and 4 models have a pre-filter that removes 95% of 1 micron particles and 80% of 0.2 micron particles. This pre-filter extends the life of the HEPA and chemical filters.
PrintPRO extractors can be used to filter air and exhaust it into the workroom or outside, but also to recirculate air within a print enclosure. Recirculation can be used to prevent temperature variation in a closed printing environment. Since some materials require a stable and high temperature, this system allows to filter and purify the air in the printing chamber of the machine while maintaining the temperature of the environment.
Among the accessories delivered with the extractors, we find a suction hose and an exhalation hose. In order to easily adapt to all types of machines in diffusion or recirculation, 3D models are also available for download. To learn more about the BOFA PrintPRO range of extractors, please visit the website of the French reseller Atome3D.
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