Abstract
CHANGES IN DIMENSIONAL STABILITY OF PINUS ROXBURGHII SARG. AND MANGIFERA INDICA L. WOODS AFTER RETIFICATION
Heat treatments such as retification are well established as a means of improving durability and stability of non-durable species. In this study Yasir Ullah Bhoru of the Forest Research Institute at Dehradun, India, has investigated the efficacy of various retification regimes on the dimensional stability of Mango wood and Chir Pine.
Yasir Ullah Bhoruyasirbhoru@yahoo.com
Changes in dimensional stability of Pinus roxburghii sarg. and Mangifera indica L. woods after retification. S. Tripathi and Y. U. Bhoru, pp. 179–185
STATUS AND CHALLENGES OF ISO 9001 QUALITY SYSTEM ADOPTION AMONG WOODEN FURNITURE MANUFACTURERS IN MALAYSIA AND VIETNAM
The ISO 9001 quality system ahs been widely adopted as a management tool to boost the performance ofmanufacturing industries. However its adoption is not universal for a variety of reasons. Jegatheswaran Ratnasingam at the University of Putra, Malaysia, surveyed 100 wooden furniture manufacturers to find out the level of adoption of ISO 9001 the difficulties and challenges that manufacturers face. The results show that the need for ISO 9001 is very market specific.
Jegatheswaran Ratnasingamjegaratnasingam@yahoo.com
Status and challenges of ISO 9001 quality system adoption among wooden furniture manufacturers in Malaysia and Vietnam. J. Ratnasingam and F. Ioras, pp. 186–191
EVALUATION OF MECHANICAL PROPERTIES OF LAMINATED STRAND LUMBER AND ORIENTED STRAND LUMBER MADE FROM POPLAR WOOD (POPULUS DELTOIDES) AND PAULOWNIA (PAULOWNIA FORTUNEI) WITH UREA-FORMALDEHYDE ADHESIVE CONTAINING NANOCLAY
In the manufacture of Laminated Strand Lumber and Oriented Strand Lumber, some of the adhesive used does not take part in the bonding of strands because it is absorbed into the wood. By adding nanoclay, the adhesive can be retained where the bonding performance is best. In this study Ali Bayatkashkoli at the University of Zabol, Iran, investigated the effects of adding increasing propertions of nanoclay to the urea formaldehyde adhesive. The addition of 5% or 7·5% nanoclay gives significant improvement to all strength properties.
Ali Bayatkashkoliali.bayatkashkoli@gmail.com
Evaluation of mechanical properties of laminated strand lumber and oriented strand lumber made from Poplar wood (Populus deltoides) and Paulownia (Paulownia fortunei) with urea formaldehyde adhesive containing nanoclay. A. Bayatkashkoli and M. Faegh, pp. 192–195
INDUCING ZONE LINES AND MELANIN FORMATION FOR DECORATIVE PURPOSES ON NORTH AMERICAN WESTERN WOOD SPECIES, WITH AN EMPHASIS ON CONIFERS
This is the second part of a study by Sara Robinson at Oregon State University, into the possibilities of infecting wood with various strains of fungi in order to produce spalting figure that is characterised by bleaching, zone lines and pigmentation. Here she has tested no less than 21 species native to the Pacific Northwest region of the USA. Results suggest that certain species can be effectively treated and increase their value on the spalted wood market.
Sara Robinsonsara.robinson@oregonstate.edu
Inducing zone lines and melanin formation for decorative purposes on North American western wood species, with emphasis on conifers. S. C. Robinson, G. Weber and E. Hinsch, pp. 196–199
CONTACTLESS MOISTURE CONTENT AND DENSITY EVALUATION OF SAWN TIMBER USING MICROWAVE TRANSMISSION
It might be fair to say that the measurement and control of moisture content in wood is one of the most important factors in quality control. The measurement of density is also vital in the determination of strength properties. In this paper, Christain Lux and his team at Holzforschung, Vienna show how they have developed a new microwave non-contact instrument that can determine both density and moisture content with a high degree of accuracy in just one pass.
Christian Luxc.lux@holzforschung.at
Contactless moisture content and density evaluation of sawn timber using microwave transmission. J. K. Denzler, C. Lux and H. Arthaber, pp. 200–206
MEASURING VOC EMISSIONS FROM WOOD-BASED BUILDING PRODUCTS UNDER REAL ROOM CONDITIONS IN AN IDEALISED MODEL ROOMS
Many years ago we lived in draughty houses with strong ventilation encouraged by open fires. With modern heating, doors and wondows, buildings are so airtight that emissions from building products (and indeed furnishings) cause concern over air quality, in particular aldehydes and terpenes. The increased use of wood panels and laminated wood products can influence air quality, In this study Ewa Höllbacher at the Competence Centre of Wood Composites and Wood Chemistry, Linz, Austria constructed two rooms, one of OSB and the other of CLT. Emissions were monitored for 23 weeks with interesting results.
Ewa Höllbachereva.höllbacher@tuwien.ac.at
Measuring VOC emissions from wood-based building products under real room conditions in idealised model rooms. E. Höllbacher, C. Rieder-Gradinger, D. Stratev and E. Srebotnik, pp. 207–211
IMPACT OF THERMAL TREATMENT ON BONDING PERFORMANCE OF UF/PVAC FORMULATIONS
PVA adhesives are well known for use with wood products, mainly in non-structural applications and in furniture. They possess the convenience of being dispersed in water, can set quickly, give flexible joints and are easy to clean up as well as having a long shelf life. Whilst formaldehyde adhesives are cheaper, they can release formaldehyde when hydrolised. Luisa Carvalho and her team at the ESTGV-Instituto Politécnico de Viseu Viseu, PORTUGAL have investigated combining PVAc adhesive with Urea formaldehyde resin for surfacing MDF with wood veneers. Results show that such mixtures can be used for veneering without loss of mechanical properties when compared with pure PVAc.
Luisa Carvalholhcarvalho@demad.estv.ipv.pt;lhora@fe.up.pt;lhcarvalho@estv.ipv.pt
Impact of thermal treatment on bonding performance of UF/PVAc formulations. N. A. Costa, J. Ferra, J. Martins, C. Coelho, J. Pereira, P. Cruz, F. Magalhães and L. Carvalho, pp. 212–216
GREENHOUSE GAS EMISSION FROM THE CONSTRUCTION STAGE OF WOODEN BUILDINGS
Atsushi Takano at Aalto University, Finland carried out a detailed investigation into the emission of greenhouse gases during the construction of multi-storey wooden buildings relative to the other stages such as material production and building usage. Results show that the construction accounts for 20–30% of the initial embodied energy emissions. The study went further to compare different construction systems. It is felt that pre-fabrication is a more efficient method of construction.
Atsushi Takanoatsushi.takano@aalto.fi
Greenhouse gas emission from construction stage of wooden buildings. A. Takano, F. Pittau, A. Hafner, S. Ott, M. Hughes and E. De Angelis, pp. 217–223
HIGH PRESSURE PAPER LAMINATES FROM MIMOSA TANNIN RESIN
Ummi Hani Abdullah at the University of Lorraine, France has investigated the potential for manufacturing high pressure laminates using resin derived from mimosa tannin. There are obvious benefits in developing bio-sourced resins but the research found that shear strength and water absorption properties were improved when laminated to plywood substrates.
Ummi Hani Abdullahummirz@yahoo.com
High pressure paper laminates from mimosa tannin resin. U. H. Abdullah, A. Pizzi and X. Zhou, pp. 224–227
COMPARISON OF THE LINEAR VIBRATION WELDED JOINTS IN THREE DIFFERENT DIRECTIONS OF THE WOOD TAUARI (COURATARI OBLONGIFILIA)
This short technical note describes an investigation into mechanically induced welding of wood joints. Haiyang ZHAMG at the College of Wood Science & Technology, Nanjing, China investigated the performance of welded joints on Tauari wood. Results are mixed but demonstrate potential.
Comparison of linear vibration welded joints in three different directions of wood tauari (Couratari oblongifilia). H. Zhang, A. Pizzi, X. Zhou, X. Lu and G. Janin, pp. 228–232
Haiyang ZHANGzhanghaiyangnjfu@gmail.com
