{"id":17782,"date":"2023-11-05T00:00:00","date_gmt":"2023-11-05T06:00:00","guid":{"rendered":"https:\/\/support.epiloglaser.com\/staging\/laser-machine\/fusion-pro\/getting-started\/how-much-combustible-gas-is-released-from-laser-engraving\/"},"modified":"2025-04-01T13:33:18","modified_gmt":"2025-04-01T19:33:18","slug":"how-much-combustible-gas-is-released-from-laser-engraving","status":"publish","type":"post","link":"https:\/\/support.epiloglaser.com\/staging\/laser-machine\/fibermark\/faq\/how-much-combustible-gas-is-released-from-laser-engraving\/","title":{"rendered":"How Much Combustible Gas is Released From Laser Engraving"},"content":{"rendered":"

Combustible gas release from laser engraving is extremely minuscule. When materials are engraved with a laser, they emit combustion products. These consist largely of simple carbon smoke and debris. Gases are also produced; typical combustion gas products for some common engraving materials are shown below.<\/p>\n

The values are provided in parts per million in the air drawn off the engraving area, except for CO2, expressed in percent.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
Material<\/strong><\/td>\nHCN<\/strong><\/td>\nNO2<\/sub><\/strong><\/td>\nCO<\/strong><\/td>\nCO2<\/sub><\/strong><\/td>\nHOCH<\/strong><\/td>\nCoCl2<\/sub><\/strong><\/td>\nStyrene<\/strong><\/td>\n<\/tr>\n
Marble<\/td>\n—<\/td>\n—<\/td>\n25<\/td>\n0.25%<\/td>\n—<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n
Stained Wood<\/td>\n45<\/td>\n>30<\/td>\n>500<\/td>\n0.3%<\/td>\n—<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n
Pressboard<\/td>\n>60<\/td>\n—<\/td>\n>50<\/td>\n0.5%<\/td>\n>5<\/td>\n—<\/td>\n12<\/td>\n<\/tr>\n
Engraver’s Plastic<\/td>\n—<\/td>\n—<\/td>\n25<\/td>\n—<\/td>\n>5<\/td>\n—<\/td>\n5<\/td>\n<\/tr>\n
Engraver’s Plastic w\/Foil<\/td>\n—<\/td>\n—<\/td>\n>5<\/td>\n—<\/td>\n3<\/td>\n0.1<\/td>\n>25<\/td>\n<\/tr>\n
Lexan Polycarbonate<\/td>\n—<\/td>\n—<\/td>\n>50<\/td>\n—<\/td>\n2<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n
Lucite Acrylic<\/td>\n—<\/td>\n—<\/td>\n5<\/td>\n—<\/td>\n>5<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n
Oil-Dyed Cowhide<\/td>\n>60<\/td>\n—<\/td>\n>500<\/td>\n0.25%<\/td>\n—<\/td>\n—<\/td>\n20<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

The total volume of engraving products produced (solids and combustible gas together) may be determined by multiplying the engraved area by its depth. The weight may then be calculated by multiplying the volume by the density of the material engraved.<\/p>\n

Example Emissions:<\/strong><\/h3>\n

Particulates: <\/strong><\/span><\/p>\n

Premise: Engraving a wood plaque.<\/p>\n

Dimensions: 5″ x 7″ x 5\/8″ = 21.88 in3<\/sup><\/p>\n

Weight: 0.83 lb<\/p>\n

Density: 0.83lb\/21.88 in3<\/sup> = 0.038 lb\/in3<\/sup><\/p>\n

Engraved Volume (estimate) = 4″ x 6″ x 0.020″ => 0.35 in3<\/sup><\/p>\n

Particulate Volume = Engraved Volume = 0.35 in3<\/sup><\/p>\n

Particulate Weight = (0.038 lb\/in3 <\/sup>)(0.35 in3<\/sup>) = 0.013 lb<\/p>\n

Then, assuming 6240 plaques\/year; 0.01 lb\/plaque, total effluvient weight is (6240)(0.013) = 81 lb.\/year = 0.041 tons\/year.<\/p>\n

Gases:<\/strong><\/span><\/p>\n

Premises: Wood Plaques. Air exhaust at 76 CFM. Engraving 5 days\/week, 52 weeks\/year, 8 hours\/day.<\/p>\n

Total Time = 5 x 52 x 8 x 60 = 124,800 minutes<\/p>\n

Total Gas Effluent (Air + Combustion Products) = (124,800 min)(76 ft3<\/span><\/sup>\/min) = 9,484,800 ft3<\/sup><\/p>\n

Then,<\/p>\n

    \n
  • NO2<\/sub> @ 30 ppm => (9.484800)(30) = 284.5 ft3<\/span><\/sup>\/year<\/li>\n
  • CO @ 500 ppm => (9.484800)(500) = 4742.4 ft3<\/span><\/sup>\/year<\/li>\n
  • CO2 <\/sub>@ 500 ppm => (9,484,800)(.003) = 28,454.4 ft3<\/span><\/sup>\/year<\/li>\n
  • Others @ 60 ppm => (9.484800)(60) = 569.1 ft3<\/span><\/sup>\/year<\/li>\n<\/ul>\n

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