Markets, Products and Technology in the 21st Century – A Canadian Solid Wood Products Perspective

1990 ◽  
Vol 66 (6) ◽  
pp. 567-571 ◽  
Author(s):  
Albert T. Schuler ◽  
Jamie K. Meil
Keyword(s):  
Multinational Corporations ◽  
Solid Wood ◽  
Wood Products ◽  
Wood Protection ◽  
Technology Products ◽  
Engineered Wood Products ◽  
The Future ◽  
Product Technology ◽  
Wood Products Industry ◽  
Conversion Technologies

This paper explores trends in the future development of the Canadian wood products industry in relation to technology, products and markets. Our analysis suggests that the wood products industry of the future may be characterized by: smaller economic units; vertical and horizontal integration to better utilize the resource and add value; market diversification; large multinational corporations; shift from commodities to engineered wood products; resource neutral conversion and product technology; shift from structural to semistructural applications and a move to more environmentally acceptable products and conversion technologies such as biocontrol for wood protection and preservation and energy-self sufficient mills. Key words: Markets, solid wood products industry, technology, competitive position.

Surface and Subsurface Quality Evaluation of Engineered Wood Products by Ultrasonic Means

2014 ◽  
pp. 182-220
Author(s):  
Frank C. Beall ◽  
Henrique Reis
Keyword(s):  
Product Development ◽  
Material Properties ◽  
Rapid Evolution ◽  
Solid Wood ◽  
Wood Products ◽  
Assessment And Evaluation ◽  
Engineered Wood Products ◽  
Engineered Wood ◽  
History Of ◽  
Ultrasonic Techniques

The use of ultrasonic techniques to evaluate the properties of engineered wood-based materials is discussed with respect to research to date and the use of more advanced techniques. The latter is critical because of the rapid evolution from solid wood to reconstituted structural materials. In addition, although considerable research has been done, there have been few introductions into manufacturing. This chapter traces the history of the use and latest developments of ultrasonics in several key areas, particularly the measurement of adhesive curing and quality in composites and laminates, and detection of flaws in solid wood materials. The techniques reviewed apply to product development, material properties, process control, product quality assessment, and evaluation of products in service.

scholarly journals The effect of time and site on incidence and spread of pruning-related decay in plantation-grown Eucalyptus nitens

2005 ◽  
Vol 35 (3) ◽  
pp. 495-502 ◽  
Author(s):  
Karen M Barry ◽  
Malcolm F Hall ◽  
Caroline L Mohammed
Keyword(s):  
Quantitative Information ◽  
Solid Wood ◽  
Fungal Species ◽  
Wood Products ◽  
Eucalyptus Nitens ◽  
Ongoing Research ◽  
Yield And Quality ◽  
Eucalypt Plantations ◽  
The Future ◽  
Over Time

Quantitative information on stem decay in eucalypt plantations grown for solid wood products, with consideration of the effect of site, pruning, and spread of decay with time, is required for the prediction of harvest yield and quality. A trial at three Eucalyptus nitens (Dean & Maiden) Maiden plantations in Tasmania revealed that the effect of time on the number and size of decay columns was substantially greater than the effect of site or of whether trees were pruned or not. Length of decay columns was 3.4-fold greater on average for the trees assessed 5.5 years after pruning than at 1 year. All decay columns in pruned trees were restricted to the knotty core, and the amount of decay-free clearwood increased over time. A controlled wounding trial showed that decay in sapwood was not significantly different in length with site but was mainly determined by the fungal species used. Ongoing research to monitor the spread of decay in pruned plantation-grown E. nitens will be important to enable prediction of the future impact of decay on harvest yields of solid wood products.

scholarly journals Modelling of Elevated Temperature Performance of Adhesives Used in Cross Laminated Timber: An Application of ANSYS Mechanical 2020 R1 Structural Analysis Software

2020 ◽  
Vol 3 (1) ◽  
pp. 46
Author(s):  
Ivan Moses Okuni ◽  
Tracy Ellen Bradford
Keyword(s):  
Thermal Properties ◽  
Adhesive Layer ◽  
Solid Wood ◽  
Wood Products ◽  
Structural Performance ◽  
Timber Species ◽  
Cross Laminated Timber ◽  
Steady State Model ◽  
Engineered Wood Products ◽  
Composite Solid

There is difficulty in accurately modelling adhesive influence in structural performance of cross laminated timber (CLT), due to a lack of available knowledge on the heat performance of adhesives. Therefore, the main aim of this research was to evaluate the thermal and mechanical properties of adhesives used in production of engineered wood products like CLT. The properties of the timber species and the adhesive types used in the simulation were derived from published literature and handbooks. ANSYS mechanical 2020 R1 was employed because it has a provision for inserting the thermal condition and the temperature of the system set to the required one for analysis. The simulations were conducted for temperatures 20, 100, 140, 180, 220, and 260 °C, within which Zelinka et al. conducted their experiments, which have been the basis for the current study. The main findings were, the adhesive layer had little influence on the thermal properties of CLT composite (solid wood had the same thermal properties as CLT), but had a significant effect on the structural properties of CLT composite, the stresses and strains of the simulated wood species reduced with increase in temperature, the adhesives strengths at room temperature were greater than for solid wood at the same temperature and finally, the stresses and strains of the simulated wood adhesives reduced with increase in temperature. It is also important to note that computations for temperature distribution from the char layer were lower than computed using heat transfer equation, and the simulated values from steady state model. All in all, the objectives of this research were met and more research in thermal structural modelling using ANSYS should be conducted in the future.

Use of LA-ICP-MS for determination of elemental concentrations of boron in preservative treated solid wood and engineered wood panels

Holzforschung ◽  
2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Robert B. Currie ◽  
Bobby Kanji ◽  
Alexander Bruce ◽  
Robert G. Schmidt
Keyword(s):  
Inductively Coupled Plasma ◽  
Solid Wood ◽  
Wood Products ◽  
Inductively Coupled ◽  
Elemental Boron ◽  
Icp Ms ◽  
Engineered Wood Products ◽  
Engineered Wood ◽  
Plasma Mass Spectrometry

AbstractThis study has been completed to review the applicability and benefits of using laser-ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) as an analytical tool for analysis of preservative concentration and penetration across boron treated solid wood and engineered wood products. LA-ICP-MS is shown to be effective at evaluating the penetration while simultaneously measuring the elemental boron concentration profile continuously across a sample.

Resources and restructuring in the international solid wood products industry

Geoforum ◽  
1990 ◽  
Vol 21 (3) ◽  
pp. 289-302 ◽  
Author(s):  
Julie Graham ◽  
Kevin St. Martin
Keyword(s):  
Solid Wood ◽  
Wood Products ◽  
Wood Products Industry

CLT – material for the measure of the future

2021 ◽  
Vol 114 ◽  
pp. 76-85
Author(s):  
Sławomir Krzosek ◽  
Teresa Kłosińska
Keyword(s):  
Construction Industry ◽  
Physical And Mechanical Properties ◽  
Wood Products ◽  
Physical Parameters ◽  
Wood Panel ◽  
Number Of Layers ◽  
Engineered Wood Products ◽  
The Future ◽  
New Material ◽  
Short Time

CLT – material for the measure of the future. CLT (cross laminated timber, X-Lam) is one type of engineered wood products. The first idea of CLT was presented in the seventies of the last century in Austria. Over the following years, the concept of cross-gluing wood was intensively developer in Europa, USA, Canada and China. Based on the literature data, this work presents history, structure, production process ,selected mechanical and physical parameters and applications of CLT. CLT is a wood panel product made from gluing together layers of solid-sawn lumber. The number of wooden layers is unpaired, most often 3, 5 or 7. Each layer consists of closely spaced and parallel boards. Adjacent layers are perpendicular to each other. The physical and mechanical properties of this product depend on many factors, e.g. number of layers and their thickness, the width and thickness of the boards in the layer, class of lumber, species of wood. Despite the fact that CLT is rather new material often used, especially in construction industry (both single-storey and multi-storey buildings). The short time of project implementation and their ecological character indicate that CLT is the material of the future in construction industry.

Einsatzmöglichkeiten von Holzwerkstoffen im Bauwesen | Possibilities of the use of wood-based materials in construction

2003 ◽  
Vol 154 (12) ◽  
pp. 472-479
Author(s):  
Peter Niemz
Keyword(s):  
Solid Wood ◽  
Wood Products ◽  
New Developments ◽  
Laminated Veneer Lumber ◽  
General Overview ◽  
Thermally Processed ◽  
Engineered Wood Products ◽  
Engineered Wood ◽  
Fibre Products ◽  
Parallel Strand Lumber

Wood-based materials and wood products are becoming increasingly important in construction. Engineered wood products, especially, are being used as a substitute for solid wood. The use of thermally processed solid wood is also increasing. Following a general overview of materials (materials based on solid wood, or laminated, veneer and fibre products)we describe their composition and most important characteristics. Emphasis is given to new developments as, for example, laminated strand lumber (LSL), laminated veneer lumber (LVL) and parallel strand lumber (parallam). We conclude with an overview of the possibilities for the use of woodbased materials in construction.

The global wood market, wood resource productivity and price trends: an examination with special attention to China

2011 ◽  
Vol 38 (1) ◽  
pp. 53-63 ◽  
Author(s):  
JUDITH AJANI
Keyword(s):  
Forest Policy ◽  
Solid Wood ◽  
Wood Products ◽  
Tree Planting ◽  
Natural Forests ◽  
Recycled Paper ◽  
Wood Panels ◽  
Sawn Timber ◽  
Wood Products Industry ◽  
Wood Consumption

SUMMARYGlobal wood consumption trends are reviewed in the context of framing a coherent forest policy in the era of climate change. Over the period 1980 to 2007, global wood consumption has been essentially stagnant, increasing by only 0.4% per year. In contrast over the same period, global consumption of wood products increased steadily, paper by an average 3.2% per annum and solid wood products (sawn timber and wood panels) by 0.8% per annum. Wood saving explains these significantly different growth trajectories in unprocessed wood and processed wood products. Wood saving strategies include recycling paper (in particular), investing in higher yielding pulp technologies, substituting reconstituted wood panels for sawn timber and plywood and growing high pulp-yielding trees in a plantation regime. China's rapidly growing wood products industry has lifted wood saving to a new high. Consistent with the theory of induced innovation, China has so far avoided triggering a global wood shortage and associated wood price increases through a progression of strategies: successful pre-emptive price negotiations, increased use of recycled paper, adoption of high-yielding pulp technologies, substitution of reconstituted wood panels for sawn timber and tree planting substituting for natural forest supply. If China's current wood saving strategies were emulated worldwide, through increased use of recycled paper in particular, and to a lesser extent, substitution of reconstituted wood panels for sawn timber and plywood, the already low growth in global wood consumption would flatten further and perhaps start to decline. These economic realities in the wood products industry align positively with the interlinked imperatives of biodiversity conservation and carbon storage in natural forests, if wood-saving is converted to forest-saving.

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