Effect of Glue Spreads on the Structural Properties of Laminated Veneer Lumber from Spindleless Rotary Veneers Recovered from Short Rotation <i>Hevea</i> Plantation Logs

Unproductive young rubber trees (15 years old) with smaller diameters (15 to 18 cm) compared to conventional rubber logs, harvested at the age of 25 years old, were selected for the production of laminated panels. Spindleless rotary veneer peeling was applied to logs from short-rotation rubber fores...

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Autores principales:	Pui San Khoo, Kit Ling Chin, Chuan Li Lee, Paik San H’ng, Mohd Sahfani Hafizuddin
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	laminated veneer lumber small-diameter <i>Hevea</i> log spindleless rotary veneers glue spread rate structural properties Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/0d1bd812aaee4e1584de867b45545e75
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spelling	oai:doaj.org-article:0d1bd812aaee4e1584de867b45545e752021-11-11T18:47:41ZEffect of Glue Spreads on the Structural Properties of Laminated Veneer Lumber from Spindleless Rotary Veneers Recovered from Short Rotation <i>Hevea</i> Plantation Logs10.3390/polym132137992073-4360https://doaj.org/article/0d1bd812aaee4e1584de867b45545e752021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/21/3799https://doaj.org/toc/2073-4360Unproductive young rubber trees (15 years old) with smaller diameters (15 to 18 cm) compared to conventional rubber logs, harvested at the age of 25 years old, were selected for the production of laminated panels. Spindleless rotary veneer peeling was applied to logs from short-rotation rubber forest plantations to produce veneers for structural purposes. This raises questions about the utilization of these small-diameter logs with respect to its effect on the quality of veneer and laminated panels produced. This study examines the effect of the glue spread rates on the physical and mechanical properties of rubberwood laminated veneer lumber (LVL). Analysis of variance shows that the application of a 280 g/m<sup>2</sup> glue spread rate significantly improved the density, water absorption and dimensional stability of rubberwood LVL. The mechanical properties of rubberwood LVL produced with a 200 g/m<sup>2</sup> glue spread rate met the minimum requirement for the 2.1E-3100F stress class; 91.05 MPa for the modulus of rupture in the flatwise direction and 50.23 MPa for compressive strength parallel to the longitudinal axis. The modulus of elasticity in the flatwise direction of 11,189.55 MPa reached the minimum requirement for the 1.5E-2250F stress class.Pui San KhooKit Ling ChinChuan Li LeePaik San H’ngMohd Sahfani HafizuddinMDPI AGarticlelaminated veneer lumbersmall-diameter <i>Hevea</i> logspindleless rotary veneersglue spread ratestructural propertiesOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3799, p 3799 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	laminated veneer lumber small-diameter <i>Hevea</i> log spindleless rotary veneers glue spread rate structural properties Organic chemistry QD241-441
spellingShingle	laminated veneer lumber small-diameter <i>Hevea</i> log spindleless rotary veneers glue spread rate structural properties Organic chemistry QD241-441 Pui San Khoo Kit Ling Chin Chuan Li Lee Paik San H’ng Mohd Sahfani Hafizuddin Effect of Glue Spreads on the Structural Properties of Laminated Veneer Lumber from Spindleless Rotary Veneers Recovered from Short Rotation <i>Hevea</i> Plantation Logs
description	Unproductive young rubber trees (15 years old) with smaller diameters (15 to 18 cm) compared to conventional rubber logs, harvested at the age of 25 years old, were selected for the production of laminated panels. Spindleless rotary veneer peeling was applied to logs from short-rotation rubber forest plantations to produce veneers for structural purposes. This raises questions about the utilization of these small-diameter logs with respect to its effect on the quality of veneer and laminated panels produced. This study examines the effect of the glue spread rates on the physical and mechanical properties of rubberwood laminated veneer lumber (LVL). Analysis of variance shows that the application of a 280 g/m<sup>2</sup> glue spread rate significantly improved the density, water absorption and dimensional stability of rubberwood LVL. The mechanical properties of rubberwood LVL produced with a 200 g/m<sup>2</sup> glue spread rate met the minimum requirement for the 2.1E-3100F stress class; 91.05 MPa for the modulus of rupture in the flatwise direction and 50.23 MPa for compressive strength parallel to the longitudinal axis. The modulus of elasticity in the flatwise direction of 11,189.55 MPa reached the minimum requirement for the 1.5E-2250F stress class.
format	article
author	Pui San Khoo Kit Ling Chin Chuan Li Lee Paik San H’ng Mohd Sahfani Hafizuddin
author_facet	Pui San Khoo Kit Ling Chin Chuan Li Lee Paik San H’ng Mohd Sahfani Hafizuddin
author_sort	Pui San Khoo
title	Effect of Glue Spreads on the Structural Properties of Laminated Veneer Lumber from Spindleless Rotary Veneers Recovered from Short Rotation <i>Hevea</i> Plantation Logs
title_short	Effect of Glue Spreads on the Structural Properties of Laminated Veneer Lumber from Spindleless Rotary Veneers Recovered from Short Rotation <i>Hevea</i> Plantation Logs
title_full	Effect of Glue Spreads on the Structural Properties of Laminated Veneer Lumber from Spindleless Rotary Veneers Recovered from Short Rotation <i>Hevea</i> Plantation Logs
title_fullStr	Effect of Glue Spreads on the Structural Properties of Laminated Veneer Lumber from Spindleless Rotary Veneers Recovered from Short Rotation <i>Hevea</i> Plantation Logs
title_full_unstemmed	Effect of Glue Spreads on the Structural Properties of Laminated Veneer Lumber from Spindleless Rotary Veneers Recovered from Short Rotation <i>Hevea</i> Plantation Logs
title_sort	effect of glue spreads on the structural properties of laminated veneer lumber from spindleless rotary veneers recovered from short rotation <i>hevea</i> plantation logs
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/0d1bd812aaee4e1584de867b45545e75
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Effect of Glue Spreads on the Structural Properties of Laminated Veneer Lumber from Spindleless Rotary Veneers Recovered from Short Rotation <i>Hevea</i> Plantation Logs

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