Abstract:
The invention relates to a method for heat transferring high resolution digital images that are printed onto a heat transfer sheet with dye-sublimation inks. The dye-sublimated image/design/graphic is impregnated into a natural wood cellulose web material using a rotary heat transfer press. The imaged wood cellulose web material forms a continuous roll of pre-laminate material that can be bonded/laminated to a myriad of substrates and that can be stored easily in roll form, with or without adhesive backing. This is a unique process of formulating an imaged, environmentally sustainable wood cellulose web material. The raw material can be FSC certified from managed renewable forests and after imaging, the wood cellulose web material has no VOC or formaldehyde emissions. The claimed invention preferably uses a polyurethane reactive (PUR) acrylic top coating that provides a high quality and cost effective surface finish to the decorated wood cellulose web material. The PUR system technology provides surface protection with high wear and shock resistance and maintains the depth and quality of the imaged wood cellulose material.
Abstract:
A method for preserving wood by contacting wood with a composition comprising an aqueous polymer dispersion, at least one surfactant, and a wood preservative.
Abstract:
Wood cellulose is treated with a reactive silicate. The reaction is done to cellulose within the wood and may be catalyzed with acid or base catalysts or a carbon silicon halogen combination which produces in situ acid catalysts or a different combination to produce an in situ base catalyst which replaces some of the molecules or atoms within the cellulose structure with silicon, boron or other hydrophobic or anti-degrading agents. Preferably an organic solvent, such as alcohol is used to accelerate the reaction with the water in the wood. Here, the hydroxyl (OH) group on some or all of the cellulose molecules is partially replaced with silicon or an alternative atom or molecule to changes the character of the wood. The process may be modified to insert a preliminary step of adding a reactive agent to be locked into the wood. Manufacturing techniques to enhance the process using ultrasound or other wave generating techniques are also taught.
Abstract:
Wood is modified by treating with an aqueous water repellent [I] and an emulsion water repellent [II]. The aqueous water repellent [I] comprises a product obtained through co-hydrolytic condensation of (A) an organosilicon compound: (R1)a(OR2)bSiO(4−a−b)/2 and (B) an amino-containing alkoxysilane: R3R4NR5—SiR6n(OR2)3-n. The emulsion water repellent [II] is a trialkylsiloxysilicate emulsion water repellent obtained by polymerizing (C) an organodisiloxane: R73Si—O—SiR73 and (D) a tetraalkoxysilane: Si(OR7)4 in an aqueous solution containing (E) a surfactant and (F) water. Two stages of treatment with repellents [I] and [II] can impart water repellency, minimal water absorption and dimensional stability to wood.
Abstract:
Polyurea/polyurethane coatings can be applied in situ to the edges of substrates without the need for adding any additives to increase flowability or moldability. The in situ application utilizes the extremely fast cure time of polyurea/polyurethanes to provide a method for efficiently creating an article with a protected edge coat by spray applying polyurea/polyurethane to wood substrates. The polyurea/polyurethane will adhere solidly to the substrate, and is applied with sufficient thickness to provide resistance to chemical, environmental, or physical stresses perpendicularly and angularly directed at the edge. The method utilizes a spray gun at high temperature and pressure, combining isocyanate and amine components of the polyurea/polyurethane coating at the nozzle and impinging the combined components onto the edge to be treated. The product of this process gives off no volatile organic compounds (VOCs), is odor free, peel resistant, and sterilized.
Abstract:
A wood product is protectively coated while maintaining the appearance of wood without discoloration by applying to the surface of a dry wood member a sealer coating containing a cyclic epoxy and an anhydride and curing the sealer, while reacting, at least a portion of the epoxy with lignin in the wood and at least a portion of the anhydride with cellulose and lignin in the wood, to bind the sealer to the wood, and cross linking cellulose, followed by applying a protective coating over the sealer before the sealer has been cured completely to bind the protective coating to the sealer. The protective coating provides a barrier to UV penetration and increases the durability of the surface.
Abstract:
An anti-skid coating composition for coating various substrates including structural panel board surfaces, comprises a binder made of urea formaldehyde resin, polyvinyl acetate, ammonium chloride and a dispersant. The binder is used in conjunction with an aggregate, such as walnut shells. A method is also provided for coating the substrates to impart slip resistance thereto.
Abstract:
A protective surface coating composition containing polyol, glycoluril, and emulsion polymer can be heat cured to produce cured films on substrates. The coating is particularly useful as wood coatings.
Abstract:
Prepolymerized resins are applied to wooden articles to coat them and impart a tough and abrasive resistant surface which protects the articles from deterioration and delamination due to shock, impact and abrasive forces. The resins are applied by contacting the articles with a prepolymerized resin which has been dissolved in a readily vaporizable solvent to form a resin solution, coating the article with the resin solution, vaporizing the solvent from the resin coating and drying the resin coating. The coated articles find particular utility in high shock and impact uses such as hockey stick blades.
Abstract:
Wood is colored both at its surface and interior by coating silicone treating liquid and heating to a temperature above about 170.degree. C to effect color change. The treating liquid, at the coloring temperature, must be sufficiently heat stable so as to maintain the continuity of the coating and substantially inert to the primary constituents of the wood.