A process utilizes electron beam generated ionizing radiation or low energy electron irradiation to effect cure of polymerizable stain compositions applied to wood planking. The electron beam ionization process generates sufficient energy to break bonds and generate new cross-links within the polymeric stain composition thus bonding the stain strongly within the pores and surface of the wood planks further creating a durable treatment. The electron beam ionization process simplifies the curing process by eliminating or reducing the need for expensive photoinitiators. Pre-stained wood planking is suitable for exterior decking materials and building panels requiring a combination of color affected and durable finishes, thereby eliminating the need for field installation of pretreatments, stains, coatings and the like. These electron beam cured wood planks take on an assortment of appearances including clear, natural, translucent, and solid hues.

A piece of natural wood can be immersed in a first solution at a first temperature less than 100? C. and then immersed in a second solution at a second temperature greater than 100? C. so as to form a piece of partially-delignified wood. In some embodiments, the first and second solutions can be the same solution, and the immersion at the second temperature can be heating the solution from the first temperature to the second temperature. The immersion in the first and second solutions can be effective to remove 45-90% of lignin from the piece of natural wood and to destroy a structure of the ray cells in the piece of natural wood while retaining cell walls of the other cells. The partially-delignified wood can then be dried. After drying, the partially-delignified wood can be clastic along its tangential direction but inelastic along its radial and longitudinal directions.

A woodworking bridge has two base walls or components that enable the bridge to span an abutment or joint between two work pieces. A top surface enables a clamp to engage the bridge to permit the clamp to apply a clamping force to a first work piece and a second work piece on both sides of the joint and prevent the clamp from contacting the joint. This allows any adhesive that oozes from the joint to be cleaned without curing in the top surface and/or the bottom surface of the two work pieces. The work pieces may then be stained without any cured adhesive in the pores of the work pieces where stain is applied.

A woodworking bridge has two base walls or components that enable the bridge to span an abutment or joint between two work pieces. A top surface enables a clamp to engage the bridge to permit the clamp to apply a clamping force to a first work piece and a second work piece on both sides of the joint and prevent the clamp from contacting the joint. This allows any adhesive that oozes from the joint to be cleaned without curing in the top surface and/or the bottom surface of the two work pieces. The work pieces may then be stained without any cured adhesive in the pores of the work pieces where stain is applied.

A method of manufacturing a building panel with a decorative surface layer, a core and a balancing and/or protective layer, wherein the method includes applying a first layer of a first powder based mix, including wood fibers and a thermosetting binder, on a core; applying a liquid substance on the first powder based mix; drying the first powder based mix; turning the core with the dried first powder based mix such that the first powder based mix points downwards; applying a second layer on the upper part of the core; and curing the first and second layers by providing heat and pressure, wherein the first layer forms the balancing and/or protective layer and the second layer forms the decorative surface layer in the building panel.

The invention relates to a method, comprising illuminating an area of a wood fibre web by directing ultraviolet light to an area of the web by an ultraviolet light source, capturing an image of at least part of the illuminated area by an imaging device comprising a colour filter, transmitting image data of the captured image to an image data processing device, and analysing if the captured image comprises a fluorescent liquid stain emitting fluorescent light passed through the colour filter. The invention further relates to a machine vision system and a computer program product for detecting fluorescent liquid stains from a wood fibre web.

The invention relates to a method, comprising illuminating an area of a wood fibre web by directing ultraviolet light to an area of the web by an ultraviolet light source, capturing an image of at least part of the illuminated area by an imaging device comprising a colour filter, transmitting image data of the captured image to an image data processing device, and analysing if the captured image comprises a fluorescent liquid stain emitting fluorescent light passed through the colour filter. The invention further relates to a machine vision system and a computer program product for detecting fluorescent liquid stains from a wood fibre web.

A composition for treating cellulosic materials is provided. The composition comprises a dispersion of micronized additives. The dispersion comprises additive particles with diameters in the range of 0.001 to 25 microns. Also provided is a method for the application of the additive-containing composition to wood, as well as wood products which have been treated with the composition.

A composition for treating cellulosic materials is provided. The composition comprises a dispersion of micronized additives. The dispersion comprises additive particles with diameters in the range of 0.001 to 25 microns. Also provided is a method for the application of the additive-containing composition to wood, as well as wood products which have been treated with the composition.

The present disclosure relates to a wood article and a process for preparing the wood article. In particular, the present disclosure relates to a wood article comprising a wood substrate comprising acidic substances and having at least one major surface; a sealing coating applied on the major surface of the wood substrate; and a Michael Addition curing coating applied on the sealing coating, wherein the sealing coating is formed by a sealing agent comprising one or more chosen from an aqueous latex of polyurethane acrylics polymer, an aqueous latex of carboxyl functional self-crosslinkable acrylics polymer, an aqueous latex of cationic acrylics polymer, an aqueous latex of polyvinyl acetate and a two-component polyurethane coating system; and wherein the Michael Addition curing coating is formed from a two-component curable coating composition.