3563results about "Wood treatment details" patented technology

Wood preservative compositions are disclosed. Treatment of lumber, plywood, and other wood products with a novel composition comprising the boron source composition, a melamine binder resin, and a urea casein activator resin protects lumber, plywood, and other wood products from attack by termites, fungi, fire and flame. The preservative can be formed by combining a source of boron such as boric acid and the water-soluble salts thereof, a melamine binder resin, and a urea casein resin. A wood preservative is characterized by a weight ratio of the urea casing activator resin to the melamine binder resin ranging from about 1:20 to 1:4 and a weight ratio of the boron source composition to the melamine binder resin ranging from about 1.3:1 to 9.6:1.

Compositions and methods in which dry-committed fibers are substantially homogeneously dispersed throughout a fibrous composition. The fibrous composition is characterized as having sufficient yield stress and viscosity such that the shearing forces from the mixing apparatus are effectively transferred down to the fiber level. This is accomplished by means of an appropriate thickening agent, e.g, gelatinized starch. The dry-committed fibers are exemplified by flash dry fibers or fibrous sheets that have been cut or torn into fragments less than 2 cm across. Providing fibers that have been dry-committed greatly reduces the time that it takes to obtain substantially homogeneous dispersion of the fibers throughout the fibrous composition. This, in turn, reduces the risk of mixture spoilage and mechanical or chemical damage to the solid components within the fibrous composition.

The use of high aspect fillers in the production of simulated stone, masonry and brick textured products such as cladding, siding, panels, or other building and construction materials. High aspect fillers increase the dimensional stability, rigidity, thermal and sound insulation. The high aspect fillers may be included into a matrix polymer with or without chemical bonding. The disclosed invention is not limited to products in the building or construction industries and may be applied in the manufacture of a wide variety of products in other industries.

The invention relates to a preparation method of heat-treatment charred wood. It aims at providing the charred wood with short treatment cycle, small wood strength loss, industrialized and high maneuverability. It contains stages of preparing, preheating, heating, insulation and cooling. In the heating stage, heat the medium in the stove to 95-105 C degree with the speed of 10-18 C degree /h. Then, heat the materials to 120-130 C degree with the speed of 3-8/ C degree h for high temperature drying and reduce the inner moisture content of the woods to nearly 0. Finally, heat them to 185-220 C degree with the speed of 12-20 C degree /h. The intermittent steam-jet method is adopted to complete steam-jet treatment during the heating.

A process for treating wood comprising applying to the surface of the wood a boron based preservative which reacts with moisture within the wood to form a boron compound and alcohol and subjecting the wood with the applied preservative to a substantially moisture-free and enclosed environment for a period sufficient for the applied preservative to be absorbed into the wood and to produce the boron compound on reaction with the moisture in the wood and for the alcohol by-product of the reaction to be adsorbed within the wood structure.

A carbonization process for increasing the quality of wood by continuous gradient heating method includes such steps as heating to 120-140 deg.C, eating to 160-240 deg.C, spraying atomized water for slowly cooling to 100 deg.C, filling the saturated steam at 100 deg.C to return the water content back to 4-6%, and cooling to 15-30 deg.C.

A method for producing the plywood with the wood plys whose one surface is coated by resin includes such steps as sawing log short, boiling in water, removing bark, spinning cutting, cutting fly, drying, ageing, coating resin on one surface of each ply, ageing, laminating, pre-pressing, trimming, hot pressing, trimming, sawing edge, sticking a paper immersed in resin, and classifying.

This invention is directed to an extrudable compound, an extrusion method using a polymer, a cellulosic fiber, and at least one lubricant selected from the group consisting of ethoxylated esters of hydantoins, ethoxylated esters of sorbitol and sorbitan, and ethylene bisamides made from fatty acids containing 6-10 carbons and composites manufactured through such processes which simulate conventional wood products. Another embodiment of the invention is directed to a composition containing polymer, a cellulosic fiber from an agricultural waste product and a lubricant containing a mixture of an alkylene bisamide derived from a C10-C18 is fatty acid and an alkaline earth salt of a fatty acid.

The production process of bamboo fibre viscose pulp includes the following main steps: pre-alkalizing, secondary cooking, plate (belt) type washing and bleaching, and is characterized by mixing insoluble bamboo pulp undergo the process of modification treatment to produce soluble viscose bamboo pulp. As compared with cotton pulp production process it can reduce discharge of waste water by 35%, and is approaching to or superior to cotton pulp in quality.

The invention discloses a method for producing a flame-retardant veneer plywood, which comprises the following steps: placing wood veneers into a flame retardant aqueous solution to perform dipping treatment, applying the mixed adhesive to the upper surfaces and the lower surfaces of the veneers after the veneers are dried, assembling the veneers into a plate blank according to the principle that odd layers are crossed and symmetrical with even layers, and then performing the processes of cold pressing, hot pressing, cutting edge, sanding, surface treating and the like to obtain the flame-retardant veneer plywood product the thickness of which is between 2.7 and 20 millimeters. The flame retardant in the method is a mixture of low ammonium polyphosphate, ammonium phosphate, ammonium pyrophosphate, urea phosphate, boric acid and pentaerythritol, and the mixed adhesive is a uniform mixture of wood adhesive, filler, and a curing agent. The flame-retardant decorative veneer plywood prepared by the method has the advantages of excellent flame-retardant and fireproof performance, environmental prevention performance, and good mechanical properties.

Provided is a method for coloring and, optionally, preserving wood and wood products. The method comprises application of pigment dispersions, and optionally biocide dispersions, to wood such that the wood is impregnated. A composition for coloring and, optionally, preserving wood is disclosed, comprising dispersions of micronized pigment and, optionally, micronized biocide.

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 invention provides a method for processing fire retarding wood with microwave. The method comprises the following steps: heating and processing wood through microwave; subjecting to vacuum pressure treatment; soaking the wood in flame retardant solution with mass ratio being 5-50% and under the atmospheric pressure of 0.1-10MPa for 3-720 minutes; subjecting to vacuum pressure treatment; and heating and treating through microwave to obtain the fire retarding wood. Since heat is not conducted from the outer part of the wood, but in the wood through the interaction between the microwave alternative electric field and water molecules, so as to quickly raise the whole temperature of the wood and improve the permeability of the heat, and meanwhile, kill bristletails and ova in the wood, improve the distribution state of flame retardant in the wood, and enable the flame retardant not to be segregated in-situ along with the migration of the solution, thus basically solving the problems with the traditional method that the flame retardant is present in large amounts on the surface of the wood and serious segregation occurs to the flame retardant when the fire retarding wood is treated. In addition to microwave heating, no additional heat energy is consumed. The fire retarding wood can be directly used as architectural decorative materials.

The invention discloses a method for producing a high-emulation 3D wood floor and the high-emulation 3D wood floor. The method comprises the following steps of: processing the surface of a base material to form a convex-concave three-dimensional surface; transferring wood grain on a rubber covered roller by using a steel roller with the wood grain, printing the wood grain on a substrate for 2 to 3 times by using the rubber covered roller, and coating finish on the substrate surface for 1 to 2 times; and printing the wood grain on the substrate for 2 to 3 times; and finally, coating finish on the substrate surface for 2 to 5 times. The wood floor produced by the method has high-emulation 3D wood grain layering and visual effects; the wood grain is clear and very vivid; and the produced floor voids repeated wood grain and has a good footfeel and the smooth and soft surface.

This invention relates to a leach-resistant borate preservative for lignocellulosic-based products, providing resistance against insect and fungal attack for use in exterior and ground contact applications. The preservative compositions of this invention may be provided as a high strength liquid concentrate, suitable for transportation, storage and easy on-site dilution, or as a ready-to-use treatment solution. These wood preservative compositions include a borate preservative component and a co-biocidal metal fixative such as copper or zinc. The preservative compositions also contain volatile organic acid, free ammonia and ammonium salts to aid dissolution. Methods for the application of these preservative compositions to wood are also provided.

The invention discloses an anti-corrosion recombined composite bamboo material and a manufacturing method thereof. The anti-corrosion recombined composite bamboo material is manufactured by utilizing bamboo as a main raw material, the density of the anti-corrosion recombined composite bamboo material is 0.9-1.50g/cm<3> and the water-absorbing thickness expansion ratio in the thickness direction and width direction of the anti-corrosion recombined composite bamboo material is respectively less than 1.5%; the anti-corrosion recombined composite bamboo material achieves a strong anti-corrosion level and has a bacterium damaged degree of zero level. The manufacturing method comprises the following steps: processing raw bamboo into bamboo strips, and then rolling the bamboo strips to obtain defibered bamboo bundles; digesting the defibered bamboo bundles by use of a dilute base solution and water sequentially, drying the bamboo bundles, and performing high-pressure transfusing on the bamboo bundles by use of a mixed aqueous solution of nano zinc oxide and bamboo mildew remover; then performing oxygen-exclusion drying treatment, high-temperature treatment and humidifying treatment; performing gumming, drying, curtain weaving, cold pressing and sizing, thermosetting and cooling equalization treatment, so as to obtain the anti-corrosion recombined composite bamboo material. The anti-corrosion recombined composite bamboo material has the advantages of corrosion resistance, weather resistance, insect prevention and good dimensional stability, and can be used for outdoor decoration.

The invention relates technology of surface treatment of wooden wares, comprising the following steps: drying the wood and blanking according to the requirement, processing and charring; brushing or spraying the archaized color priming paint which is compounded by diluent and mixture of yellow paint, red paint, black paint, and white paint in proper proportion, after drying, repairing the surface of the wood, then spraying the priming paint repeatedly twice or thrice, making it dry naturally; sanding the said wooden wares by fineness abrasive cloth, taking out the paint around 20%; spraying the press polish archaized paint to the surface of the wooden wares. The invention processes simple technology, good effect of imitation antique, convenience production, economy and utility.

Water-soluble organic silicon compounds are prepared by effecting co-hydrolysis of (A) 1-30 parts of an alkyltrialkoxysilane of R1Si(OR2)3 or a partial hydrolyzate thereof, (B) 70-90 parts of an alkoxy-containing siloxane of R3a(OR2)bSiO(4-a-b)/2, and (C) 1-20 parts of an amino-containing alkoxysilane of R4R5NR6-SiR7n(OR2)3-n or a partial hydrolyzate thereof in the presence of an organic or inorganic acid. R1 is a C7-C18 alkyl group, R2 is a C1-C4 alkyl group, R3 is a C1-C6 alkyl group, R4 and R5 are a hydrogen atom, C1-C15 alkyl or aminoalkyl group, R6 is a divalent C1-C18 hydrocarbon group, and R7 is a C1-C4 alkyl group. Letters a and b are 0.75</=a</=1.5, 0.2</=b</=2, and 0.95<a+b<3.4. These water-soluble organic silicon compounds are fully water soluble and shelf stable and can be used as an agent for preventing porous materials from water absorption simply after dilution with water. Porous materials are coated or impregnated with the compounds so that they are given excellent water repellency and water absorption-preventing effect.

A method to produce a building panel comprising a decorative surface layer, a core and a balancing and/or protective layer is disclosed.

The invention relates to a wood microwave vacuum drying and charring device and a drying and charring method thereof. The device comprises one charring tank (box) with a tank door (3), a tank door opener (2) and a charring chamber (1), a vacuum system, and one or more microwave sources (6) generating the microwave, a heat-conducting oil furnace system and a material preparation and feed system. The drying and charring method comprises the following steps: A. rising the temperature inside the tank to 30-50 DEG C, and then to 80-130 DEG C at the rate of 2-8 DEG C/h; B. preserving the temperature for 2-100 hours; C. vacuumizing the tank for 4-100 hours; D. starting a hot recycle pump to control the oil furnace temperature, the oil flow rate and the pressure inside the tank for 4-100 hours: E. turning off the microwave source and a heat source, opening an intake and exhaust valve (39) to discharge the pressure inside the tank to 0 and lower the temperature to 70-130 DEG C, and then closing the intake and exhaust valve (39); and F. starting a vacuum pump (22) to lower the temperature inside of the tank by air circulation and removing the wood from the tank when the temperature decreases to 30-70 DEG C. The device and the method help char the wood evenly, shorten the production cycle by 60% compared with the conventional method, and lower the energy consumption by 70%, thus greatly reducing the production cost.

The invention relates to a bamboo bending molding method and relative shaping mould. Said method comprises: heating and softening the raw bamboo or bamboo plate to be arranged into special molding mould to be bended and dried to attain needed bamboo product. Wherein, said heating softening process utilizes poaching or smoke while the heating temperature is not less than 90Deg. C for 20-40mins; said drying process is processed in oven or a sealed heating space, while the drying temperature is 45-64Deg. C until the water content of bamboo product is under 10%; said molding mould can be formed by upper and lower modules which can be arranged into compressor, while at least one molding groove for containing bamboo plate is between the upper and lower modules; or it can be formed by arranging several positioning protruded posts on one judging surface to form a bended molding clamping groove of one module. The invention has simple process, high quality, larger strength, and high producing efficiency.

The invention discloses a flame-retardant decorative veneer, which is formed by compounding flame-retardant veneer plywood taken as a base board and barks of natural rare trees. A flame-retardant veneer plywood is produced through a method as follows: placing wood veneers in a flame retardant solution to perform dipping treatment; applying mixed adhesive to the upper surfaces and the lower surfaces of the veneers after the veneers are dried; assembling the veneers into a plate blank after the adhesive is applied, and then performing the processes of cold pressing, hot pressing, cutting edge, sanding, surface treating and the like to obtain the flame-retardant veneer plywood product. A flame retardant is a mixture of low ammonium polyphosphate, ammonium phosphate, ammonium pyrophosphate, urea phosphate, boric acid, and pentaerythritol, and the mixed adhesive is a mixture of wood adhesive, inorganic filler, and a curing agent. The flame-retardant decorative veneer prepared by the method has the advantages of excellent flame-retardant and fireproof performance, environmental protection performance, mechanical properties, and decoration function.

A phosphate and ammonia free composition for treating an object (i.e., lumber, plywood and other wood products) is described. The treating solution may be applied to the object by dipping, soaking, brushing, spraying, etc., however, vacuum and/or pressure techniques may be used to impregnate the object according to the method of this invention, including both the empty-cell process and the full-cell process. The composition achieves fire retardant qualities without object degradation when the treated object is subjected to heat and humidity over time. The composition of this invention includes nitrogen in a predetermined ratio to boron.

The invention discloses a strengthening and flame retardant integrated modified processing method for artificial forest wood and modified artificial forest wood prepared thereby. The method adopts a low molecular weight water-solubility melamine modifying urea-formaldehyde resin solution to compound a flame retardant for dipping the artificial forest wood, comprising the following steps: firstly preparing the melamine modifying urea-formaldehyde resin solution; adding borate to the resin solution for preparing a compound modifier for dipping; then dipping the soft artificial forest wood to ensure that the wood fully absorbs the modifier; and finally drying the dipped wood to obtain the strengthened and flame-retardant processed wood. Because the resin is solidified in the wood, the strengthened and flame-retardant processed wood prepared in the method has the advantages of weight increment and enhanced physical properties including density, size stability, rigidity, strength and the like; meanwhile, because the flame retardant contained in the resin can be uniformly distributed and fixed in the wood, and has strong loss resistance, the processed wood has favorable flame resistance.The processed wood can be extensively applied to the industries of architecture, furniture, interior decoration and the like.

The invention discloses a wood grain board made of bamboo and manufacturing method, the wood grain board made of bamboo includes a faceplate made by bonding and pressing the bamboo pieces arrangement, the bamboo pieces are arranged with inclination less than 90 degrees to the board plane, the inclination is adjusted and set based on the grain of required boards. The bamboo boards made by the invention technique project, because the faceplate is pressed by form of inclined arrangement of the bamboo, so the grain of faceplate has solid wood grain of top grade; because the core plate and base plate use interlaced in length and breadth arrangement form of bamboo mat, bamboo curtain, bamboo filament and piece plate, the multiple indexes of shear strength, bending intensity and elastic modulus for long and cross grain of the whole boards are better.

A method for applying a barrier to structures to prevent the infiltration of pest species (unwanted organisms) uses a (e.g., coating) composition formed from a polyurethane (e.g., film-forming) polymer system and a pellet comprising a pesticide incorporated into a sorbent and dispersed in the polyurethane polymer system. The composition protects the structure by application either to the structure or to a pathway that leads to the structure. Advantageous polymer systems include polyurethanes rich in urea linkages and predominating in aliphatic and alicyclic backbones.

The invention relates to a method for processing wood, in particular to a method for producing a recombined decorative veneer by using a dye with bright color to simulate cloth marks and the veneer manufactured by the method. In order to achieve the aim, the invention adopts a method for manufacturing the recombined decorative veneer simulating cloth marks, which comprises the processes of veneer bleaching, veneer dyeing, veneer drying, veneer digging and repairing, veneer combination, veneer sizing, veneer gluing, veneer maintenance, and veneer slicing. The method adopts the dye with the bright color to dye the veneer with the bright color, and adopts the veneer with high contrast grade to combine according to designed patterns; and the produced recombined decorative veneer has clear lines similar to wall cloth. Compared with other recombined decorative veneers, the color is brighter, the lines are clear, and the patterns mainly adopt a wall cloth series.

The invention discloses a bamboo softening and modifying technology. The bamboo softening and modifying technology comprises the following steps: (1) cleaning bamboo, cutting into segments, and putting the segments into an industrial microwave oven for microwave treatment; (2) putting the bamboo segments after the microwave treatment into a mould-proof and mothproof liquid, soaking for 3-5 minutes, taking out, and draining off; and (3) baking the bamboo segments treated in the step (2) at 35-45 DEG C for 20-30 hours, then heating to 60-70 DEG C, drying for 50-60 hours, finally cooling to 50-60 DEG C and keeping the temperature for 5-10 hours. According to the technology, the bamboo is prevented from being treated by a chemical agent; the bamboo softening and modifying technology is short in treatment time, is low in production cost, and is relatively environmentally friendly; the modified bamboo is good in mould-proof and mothproof properties, is relatively soft and tough, and is difficult to crack and deform.

The invention provides a wood ultra-high temperature heat treatment method for improving wood dimensional stability and durability. The heating-up process of the treatment method includes: the first heating-up stage, using only water vapor as isolating oxygen protect media; the subsequent second heating-up stage, introducing nitrogen and using the mixture gas of nitrogen and water vapor as isolating oxygen protect media to reject degradation of wood main component cellulose then prevent the decline of wood strength. The products treated by the invention have good dimensional stability and durability, while strength decline is small; Moreover, the needed processing time of the treatment method is short, production efficiency is high and cost is low.

The invention relates to a method for processing wood, which belongs to the technical field of heat treatment of wood. The method comprises the steps of sequentially carrying out decompressing, preheating, high-temperature pressurizing and humidifying on wood placed into a container. Because the higher equilibrium water content is maintained in the process of processing the wood by the method, the manufactured wood overcomes the dry defects of cracking, shrinkage, and the like. The manufactured wood has reinforced size stability, strength and bending strength; the cracking generation proportion, the hygroscopicity and the water absorption performance of the wood are greatly reduced; and the weather and corrosion resistance of the wood is improved. The wood manufactured by the method reaches the standard of carbonized wood SB/T 10508-2008. The superheated steam with large specific heat and heat transfer coefficient is used as a heat transfer medium by the method and has small medium transfer resistance, short processing time and less heat loss; and the method saves energy sources and has low wood processing cost.