During production, thermally modified wood is processed using the same machining operations as unmodified wood. Machining always accompanied with creation of dust particles. The smaller they become, more hazardous are. Employees are exposed to a greater health hazard when because considerable amount fine produced under processing conditions than in case International Agency for Research on Cancer (IARC) states that causes cancer nasal cavity and paranasal sinuses nasopharynx. Wood also...

The influence of beech bark concentrations as filler in urea-formaldehyde (UF) adhesives was investigated relative to the composite forming process and selected properties final 5-layer plywood. Beech used lower wood processing waste production decrease formaldehyde emissions. A combination UF filled with different adhesive used. Three bark, 15 wt.%, 20 25 wt.% were experiment. Urea-formaldehyde technical flour a reference sample. effect studied via its temperature profile during pressing,...

Different types of sanders are used in every furniture factory and carpentry plant. The wood dust generated during sanding is considered to be one the main health safety hazards. Based on many studies, whole inhaled fraction particles less than 100 μm harmful health. Thus, it important know specific particle size fractions dust. This study compared granulometric compositions dusts selected species (beech oak) determined statistical significance individual factors (type sander, species, grain...

The aim of this paper was to determine the particle size composition wood dust emission from CNC milling natural and medium-density fiberboard (MDF) evaluate associated occupational exposure risks. is focused on some most commonly used materials in woodworking furniture industry, i.e., solid (beech, oak, spruce) composite (MDF panels). In addition influence machined material, effect technical-technological parameters, namely, feed speed depth cut distribution, also investigated. selected...

The effects of wear on the performance sanding belts were determined for European beech (Fagus sylvatica L.) and English oak (Quercus robur).These measurements are presented as a function defined time 480 min manual belt machine.Sanding pressure piece surface (6600, 10400, 14700, 18600 Pa), direction (cutting speed vector with reference to wood fibers equal 0°, 60° 90°), hydrothermal treatment, from various manufacturers variables.The was monitored by means specific removal rate (g/cm 2...

This paper aimed to define the density fluctuations of thermally modified wood. was achieved by granular analysis wood dust. The dust acquired sanding completed using a narrow belt sander. samples were taken from spruce, oak, and meranti types that at temperatures 160 °C, 180 200 220 °C. results showed shares ≤ 0.08 mm particles how their share related temperature treatment; residue curves manifested stratification in individual sieves density. densities statistically analysed, statistical...

The article presents results of the granulometric composition chip particles when sanding wood (beech) and wood-based materials (particleboard semi-hardboard) using different types sanders – wide belt sander, narrow hand sander. On basis carried out sieve analyses, proportion produced particles, which can be marked as dust with particle size ≤ 80 μm, is high at interval from 89.21% - 96.29 %. highest percentage was reached disk At end we point to possible technical safety measures additional...

Abstract Airborne wood dust poses health and safety risks in the construction furniture industry. The study verified whether thermal modification affects share of fine particles (< 10 μm) generated during spruce, oak, meranti sanding. experimental research involved nine material variants, including three species states: untreated, thermally modified at 160 °C, 220 °C). To collect least 200 g each sample, a belt sander with P80 sandpaper speed m/s was used, along collector. collected then...

The aim of this research was to investigate the effects various temperatures thermal treatment red meranti (Shorea accuminata) wood on mass concentration and size distribution dust produced by a hand-held belt sander. experiment conducted during sanding in natural state using specimens that were heat-treated via ThermoWood® technology at 160 °C, 180 200 220 °C. An analysis variance used measure significance effects. Average values inhalable respirable fractions determined optical gravimetric...

A verification experiment was performed to monitor the impact of technical, technological, material, and tool factors on roughness milled surface (average Ra) during plane milling thermally treated spruce wood. The technological parameters were: four heat treatment temperatures (160 °C, 180 200 220 °C; one sample kept in its natural state), three feed rates (6 m·min-1, 10 15 m·min-1), cutting speeds (20 m·s-1, 40 60 m·s-1), rake angles (15°, 20°, 30°), types used blades (HSS 18% W with...

The relationship between the conditions of use filter bags made non-woven fabric and separation efficiency wood dust generated in a furniture factory was experimentally determined pulse-jet filtration using pilot-scale baghouse as waste during processing composites. experiments were carried out, we describe results experiment consisting assembling one type bag two extraction installations operating under different same factory. working assumed time intervals then tested for their stand...

The article describes the process of forming wood dust filtration resistance generated during furniture production using honeycomb board technology in a filtering installation operating industrial conditions. influence service life filter fabric on values conditions for one and type was analyzed. For this purpose, bags made material were used an at four different times. results compared to those previously obtained same factory but with bag type. analysis based changes flow clean dust-laden...

The quality of milled surface medium-density fibreboards (MDF) and the effect wrong milling direction during process automatic in real conditions practice (production machine, production tool, material) are presented paper. Moreover, double vs. single bladed cutter on final with simultaneous changes individual parameters feed rate, thickness removed layer, cutting was investigated. MDF separated using strategy “one per pass“ required (climb or conventional) thick strips off (4 mm to 16+ mm)...

In order to ensure acceptable level of risk associated with exposure airborne dust they should have been mainly technical and organisation measures at workplaces enhanced occurance dust. Local exhaust ventilation (LEV) belongs principal engineering control for prevention spreading. The aim the study was assess efficiency LEV system used mechanical workshop controlling respirable fraction during stainless steel grinding activities. Dust effectiveness assessed by determining personal levels...

The article deas with evaluation of the selected parts a life cycle timber formwork on wooden basis, notably in field manufacturing and usage. Experimental research focused mainly assessing possibilities energy savings process through shortening technological moulding. By optimalisation moulding period, it is possible to achieve considerable savings. Based upon experiments, we created an experimental model order determine optimum time. Withing usage, evaluated particular materials regard...

The aim of this paper is the issue a sustainable manufacturing process in context woodworking by sanding, as one most important technological operations before its final treatment, focusing on selected pillar process, waste management. first step experiment was to optimize pressures sanding means surface. optimal pressure 1.04 N·cm−2 chosen. second level obtain wear curves abrasive with grain size 80 (evaluated wood removal) and dependence direction (along perpendicular fibres 60° fibres)...

The influence of high doses beta radiation on the changes in structure and selected properties (mechanical thermal) polymers were proved.Using for polybutylene terephthalate (PBT) its mechanical ultra nanohardness has not been studied detail so far.The specimens made by injection moulding technology irradiated (0, 33, 66 99 kGy).The microstructure micromechanical surface layer evaluated using FTIR, WAXS instrumented test.The results measurements showed considerable increase (indentation...

Design and comparison of a suitable separation technique during the machining process in CNC center. The paper deals with issue chip extraction from milling aimed to compare particle size distribution dust generated natural wood (beech, oak, spruce) MDF on 5-axis was evaluated using sieve analysis samples total weight captured dust. results showed that processing is mainly characterized by formation coarse fractions (2 mm - 1 sieves), while associated fine below 100 μm. Another objectives...

The primary goal of this Special Issue, “Advances in Wood Processing Technology”, was to showcase cutting-edge research and development the field wood-based materials [...]