Air pollution by wood dust in furniture production sites is an important hygiene issue. The dust is created by all types of wood and wood-based material machining, and its concentration in the working zone surrounding the machining stand depends on the effectiveness of the dust exhaust system. In present research, three setups of the dust extraction system for a conventional table sawing machine are considered while machining particleboards. The results showed a high impact of the exhaust system connection setup on the dust concentration in the air surrounding the sawing machine work stand. The use of both main and auxiliary sawdust extraction connectors together ensured the highest clearness of the air, with only 0.5 mg/m3 of dust concentration. Closing the upper hood leads to a concentration five times higher, while disconnecting it results in a ten times higher dust content. The finest dust particles (<1 µm), however, are the most numerous in the case of closing the hood.

Department of Furniture Design Faculty of Wood Technology Poznań University of Life Sciences ul Wojska Polskiego 38 42 60 637 Poznań Poland

Department of Wood Science and Technology Faculty of Forestry and Wood Technology Mendel University in Brno Zemědělská 3 61300 Brno Czech Republic

Department of Woodworking Machines and Fundamentals of Machine Design Faculty of Wood Technology Poznań University of Life Sciences ul Wojska Polskiego 38 42 60 637 Poznań Poland

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