SOLID WOOD PROCESSING | Chemical Modification

The aesthetic durability of wooden structures is a major challenge for the use of this material in construction. Wood is used for its technical performances but also for its architectural qualities and its aesthetic perception. The premature aging of the wooden structures is detrimental because these disorders, even if they do not affect the strength of the structures, are mostly irremediable. The surface protection of wood is generally ensured by the use of a finish, whose essential role is to protect wood from climatic aggressions (water, solar radiation, oxygen, ...). The secondary wood processing industry consists of a series of manufacturing and processing activities, each containing a portion of the added value of the product. The application of a finish on a wood-based work is usually the last and most visible step in this value chain.In outdoor use, the protection of the wood surface with transparent finishes is not yet sufficiently durable to be able to compete with materials used in industrial carpentry such as PVC or aluminum. Opaque finishes generally provide more durable protection but they mask the appearance of the wood sought by users.With the aim of positioning wood in this construction sector, research on transparent finishes has focused on the efficiency and improvement of the durability of the protection of the surface appearance of structures. Faced with climatic aggressions, the optimum conservation of a structure is not only linked to the performance of the finish but also to the characteristics of the wood material. In particular, in order to fulfill its protective function, the finish film must be able to follow the dimensional variations of the wood it covers without breaking and without detachment. In addition to the criteria for the effectiveness of finishes in the protection of structures, the environmental impact must be considered with increasing attention. Currently, more than 80% of composite or solid wood products are still protected with solvent-based liquid products, which are an important source of VOC emissions. Does the solution come from photo-polymerizable systems that can be formulated with 100% dry matter either in liquid phase in reactive diluents or powdered?

Download Full-text

Study on the Solid Edge Banding Cracking of Panel Furniture

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.337.418 ◽

2011 ◽

Vol 337 ◽

pp. 418-421

Author(s):

Cheng Min Zhou ◽

Zhi Hui Wu ◽

Dan Dan Ma

Keyword(s):

Solid Wood ◽

Reference Analysis ◽

Wood Processing ◽

The North ◽

Natural Wood ◽

Potential Factors ◽

Wood Grain ◽

Solid Edge ◽

Comprehensive Reference ◽

Made In

With the development of wood processing technology, panel furniture is getting more and more popular, where solid wood is often used for the edge banding to keep the natural wood grain, feel and colour. However, part of the panel furniture, especially that made in the south but sold to the north, has banding cracking issues due to various reasons. In this paper, on the base of comprehensive reference analysis and in-field exploration, the potential factors leading to banding cracking is studied; the influence of wood moisture content and adhesive on the cracking is specially analyzed; and the suggestions on the drying of the solid wood, glueing, manufacturing environment and process are presented. Thus, a new systematic concept to solve edge banding cracking is established, the study on which will be helpful to the development of panel furniture.

Download Full-text

SOLID WOOD PROCESSING | Finishing

Encyclopedia of Forest Sciences ◽

10.1016/b0-12-145160-7/00052-1 ◽

2004 ◽

pp. 1302-1307

Author(s):

W.C. Feist

Keyword(s):

Solid Wood ◽

Wood Processing

Download Full-text

Kiln-drying lumber quality of hybrid poplar clones

Holzforschung ◽

10.1515/hf.2007.011 ◽

2007 ◽

Vol 61 (1) ◽

pp. 65-73 ◽

Cited By ~ 10

Author(s):

Kyu-Young Kang ◽

Slobodan Bradic ◽

Stavros Avramidis ◽

Shawn D. Mansfield

Keyword(s):

Global Climate ◽

Hybrid Poplar ◽

Value Added ◽

Solid Wood ◽

Wood Products ◽

Kiln Drying ◽

Wood Processing ◽

Hybrid Poplars ◽

Short Rotation

Abstract Hybrid poplars are currently used in North America primarily for the production of pulp fibre and in the manufacture of engineered solid wood products. Recently, the deployment of poplars as a short-rotation fibre crop has been of interest to mitigate the increasing amount of plantation-grown short fibre resources (hardwoods) derived from the Southern Hemisphere, as well as in the context of global climate change, both as a means to rapidly sequester carbon and as a feedstock for potential bioenergy production. Knowledge on the utility of hybrid poplars in the value-added secondary wood-processing sector, however, is very limited. To improve this situation, the variation in kiln-drying quality of five hybrid poplar genotypes of similar age, harvested from a common site in British Columbia, Canada, was evaluated for three different kiln-drying schedules. The results clearly demonstrate that the drying schedule has a greater effect on grade recovery and the degree of deformation than the hybrid poplar genotype. Furthermore, it was shown that many of the deformations inherently associated with wood derived from fast-grown trees can be reduced or removed with drying, in particular with an aggressive drying schedule.

Download Full-text