Laser Fume Extractors

Laser Engraving / Cutting / Marking Fume Extractor

Lasers can engrave, cut or mark by vaporizing the target material with a high-energy light beam. Smoke and gases are generated as a byproduct of this process. These are collectively called laser fumes.  The laser fumes are made up of respirable dust and volatile organic compounds (VOCs). Filtrabox’s three-stage, high-efficiency filter arrangement captures the fumes directly from the source and recirculates purified, clean air back into the work environment, improving indoor air quality.  Simple dust collectors are not enough. You need a comprehensive fume extraction solution for laser fumes. 

Laser Fumes Are Made Up of Two Components: 

1. Respirable dust:

All laser marking, engraving, and cutting systems (C02, fiber, and YAG lasers) unavoidably generate respirable dust (2.5 microns and less in diameter). Given their small diameter, the individual dust particles are invisible to the naked eye, but can usually be seen as smoke when in high concentrations. Respirable dust can penetrate deep into the lungs and increase health risks. However, high-quality, performance-tested HEPA filters can remove respirable dust from the air, therefore making the air safe to breathe. FIltrabox uses high-performance HEPA filters with an impressive tested efficiency of 99.999% @ 0.3 microns.  This means that it removes 99.999% of the most aerodynamically penetrating particles, known to be 0.3 microns, while smaller and larger particles are even more effectively captured, resulting in extremely clean air; free of respirable dust.

Relative Particle Size Table

2. Volatile Organic Compounds / VOCs: 

Volatile Organic Compounds, also known as VOCs, are the gaseous component of the contaminants emitted during the laser vaporization of most materials. Sustained exposure to high concentrations of VOCs is a health risk.  Most VOC molecules will physically bond to the activated carbon’s network of microscopic pores. This is called adsorption.  Some other VOCs require alternative chemical treatments to deactivate them.  Filtrabox’s blend of both high-performance activated carbon adsorption media and potassium permanganate chemical treatment media offers the broadest range of laser VOC protection available. 

Internal Structure of Activated Carbon

Activated carbon is very porous. Three types of pores exist in activated carbon. These pores capture and retain contaminants within them.

  • Micropores: the radius is smaller than 1 nanometer (best for gas molecules).
  • Mesopores: the radius is 1-25 nanometers
  • Macropores: the radius is larger than 25 nanometers

Carbon types with a high proportion of micropores are best for adsorbing gas molecules. We use coconut shell-activated carbon which has the highest micropore content. 

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