ANALYSIS OF NOISE LEVEL AT MDF AND PARTICLEBOARD PROCESSING WITH DIFFERENT FEEDING SPEED

摘要

The wood processing employees are exposed to work hazards starting from various accidents at work, to the risks of contaminations by wood dusts, acoustic pollution, chemical agents etc. The noise pollution is an environmental contaminant, which is known as a real threat to people’s health and quality of life.This study consists in analyzing of noise levels during the processing of wood base panels such as MDF and Particleboard with two different feeding speeds and two different thickness of material.MDF is processed in spindle moulder and circular saw, particleboard material is processed only in circular saw, which are available in woodworking facility of the Faculty of Forest Sciences of Tirana. The measurement method of noise levels are those approved by WHO (World Health Organization) and used by the PHI – Public Health Institute of Albania. All measurements are done using the Sound Level Metter EXTECH 40 7764 RS-232/Data logger equipment.The Spindle moulder machine results in higher levels of noise, exceeding considerably the permissive noise level of 85 dB. The level of noise resulting from circular saw machine by processing MDF is much smaller than the noise level resulting from circular saw machines during operation of particleboard samples.In general, by increasing the feeding rate from V1 to V2 increases the noise level, for all the work regimes carried out.