Gökay Nemli, Turgay Akbulut, Emir Zekoviç. (2007). Effects of some sanding factors on the surface roughness of particleboard. Silva Fennica vol. 41 no. 2 article id 302. https://doi.org/10.14214/sf.302

Keywords: particleboard; sanding; surface roughness; power; grit size; feeding speed

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Effects of the grit sizes of the sand belt, feeding speed and the feed power of the heads of the sander on the surface roughness of the particleboard panels were investigated. Two surface roughness parameters, average roughness (R_a) and mean peak-to-valley height (R_z), obtained from board surfaces were used in the analysis. Sanding factors were found to have a significant effect on the surface roughness of the particleboard. Better results were obtained with 40 m/min of feeding speed, 40-60-80-120 of grit sizes, and 67 kW of the feed power of the heads of the sander.

Nemli, Karadeniz Technical University, Faculty of Forestry, Trabzon-Türkiye E-mail: nemli@ktu.edu.tr
Akbulut, Istanbul University, Faculty of Forestry, Istanbul-Türkiye E-mail: ta@nn.tr
Zekoviç, Starwood Forest Product Company, Production Manager, Bursa-Türkiye E-mail: ez@nn.tr

article id 358, category Research article

Turgay Akbulut, Nadir Ayrilmis. (2006). Effect of compression wood on surface roughness and surface absorption of medium density fiberboard. Silva Fennica vol. 40 no. 1 article id 358. https://doi.org/10.14214/sf.358

Keywords: compression wood; medium density fiberboard; surface properties; surface analysis

Abstract | View details | Full text in PDF | Author Info

Compression wood is undoubtedly one of the most important raw material variables in wood based panel manufacturing. This study evaluated effect of compression wood on surface roughness and surface absorption (flow distance) of medium density fiberboards (MDF) manufactured from furnishes of pine (Pinus nigra Arnold var. pallasiana) containing compression wood. Panels were manufactured from two different portions of the furnish, one of the portions having a compression wood/normal wood ratio of 75/25, and the other having a ratio of 10/90. Surface absorption and surface roughness were determined according to (EN 382-1) and (ISO 4287), respectively. It was found that panels made from furnish with a 75/25 ratio had a significantly lower surface absorption value (255.78 mm) than panels made from furnish with a 10/90 ratio (317.95 mm). Surface roughness measurements based on three roughness parameters, average roughness (Ra), mean peak-to-valley height (Rz), and maximum peak-to-valley height (Ry) were considered to evaluate the surface characteristics of the panels and supported the above findings as the panels made from furnish with a 75/25 ratio had slightly rougher surface with average values of 4.15 µm (Ra). From the tests performed, we conclude that increasing of the compression wood portion increased the surface roughness and decreased the surface absorption value.

Akbulut, Istanbul University, Faculty of Forestry, Bahcekoy, TR-34473 Istanbul, Turkey E-mail: ta@nn.tr
Ayrilmis, Istanbul University, Faculty of Forestry, Bahcekoy, TR-34473 Istanbul, Turkey E-mail: nadiray@istanbul.edu.tr

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