7679results 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.

A process for treating a wood substrate with a water-based formulation containing a wax in order to confer water repellency to the substrate comprising the steps of:(a) placing the substrate in a treatment vessel and reducing the pressure in the vessel to remove air in the pores of the substrate;(b) contacting the substrate in the vessel, while reduced pressure is present in the vessel, with the formulation to allow the formulation to flow into said pores, said contacting being carried out at a temperature at or above that required to cause the wax to change into a molten state;(c) applying a positive pressure to the vessel to force the formulation into said pores; and(d) releasing the pressure in the vessel and removing the resultant wood substrate from the vessel.

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.

The invention discloses technology for producing compressed and carbonized poplar three-layer solid wood composite floor fully through utilization of a fast-growing material of poplar. A poplar sheet obtained by a special densification process is used as a surface layer; a common poplar core veneer is used as a core layer; a poplar veneer is used as a bottom layer to manufacture three-layer solid wood composite floor; each performance reaches the requirement of national standard GB/T 18103-2000 on the solid wood composite floor; the technology totally adopts the fast-growing material of the poplar as a raw material, does not add any chemical reagent in the special densification process of the poplar sheet, and does not cause any pollution to environment; after the poplar sheet is subjected to compaction treatment, the density and the hard sense of the wood are strengthened; the late high-temperature carbonization treatment solves the problem of rebounding after the poplar is compressed, changes luster of the wood, and strengthens high grade; and the technology is simple and feasible and has low manufacturing cost.

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.

Provided is a composition which can color and preserve wood. The composition comprises both micronized pigments and inorganic and/or organic biocides, which may be present as a dispersion, emulsion or in solution also provided is a one step method for the coloring and preservation of wood.

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.

A composite material is produced from carpet waste and a binding agent, in intimate association, and may also include wood fiber or chips and/or other additives. A method of manufacturing a composite material includes shredding carpet waste, coating the carpet waste with a binding agent, and subjecting the shredded, coated carpet waste to elevated heat and pressure. As an additional step, the composite material may be actively cooled to prevent deformation of the material.

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 a method for treating wood at high temperature and with hot water, comprising following steps: (1) putting wood in high temperature furnace; increasing temperature at furnace to 120-150 Deg. C and keeping temperature; (2) increasing temperature to 180-240 Deg .C when the water content of wood reduced to lower than 5%; keeping temperature and the time is 0.5-3 hours according to wood thickness per cm; (3) reducing temperature at furnace, treating wood with steam or hot water when temperature is reduced below 100 Deg. C to reduce wood water content to 7-10%; (4) reducing temperature continuously and getting wood out of furnace when the temperature inside wood is reduced to about 40 Deg. C; (5) balancing at atmosphere for more than 15 days. The invention can increase size stability, rotproofness and weather ability of wood, and the wood can be applied in environment with large change in humidity and temperature.

The invention provides a wood softener, wherein components included in the wood softener and the weight percentage of each component are as follows: 10-80% glycerol, 0.2-3% anionic penetrating agent, and rest being water. The invention also provides a preparation method of the wood softener, wherein the following process is adopted: proportionally and evenly mixing glycerol with anionic penetrating agent and water, and stirring the mixture using a stirrer at 25-40 DEG C and at a speed ranging from 50-200 r/min for 1-3 min. The invention further provides a method for performing softening treatment on the wood, comprising the following steps of: adding the prepared softener to a container; putting small wood pieces in the softener; and heating to a range of 70-100 DEG C and keeping the temperature for 3-10 h. The invention additionally provides a method for processing wood slices, comprising the following steps of: adding the prepared softener to the container; heating to a range of 70-100 DEG C and keeping the temperature for 3-10 h; and then putting the softened wood pieces into mixed solution of absolute ethyl alcohol and anhydrous glycerol, and oscillating for 0.5-5 hours, thereby forming the wood pieces into wood slices. The wood slice is processed by the wood softener, which is used for identifying the type of wood.

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 discloses a method for densifying wood and densified wood manufactured by the same. The method comprises: sealing the cross section of wood by using a hydrophobic material, wherein the water content of the wood is less than 12 weight percent; coating softener on the surface and/or shallow layer of the sealed wood; and performing the hot pressing of the wood of which the cross section is sealed and which is coated with the softener at a temperature above the boiling point of the softener to densify the wood. The method for densifying wood can compress the wood to different extent according to needs. The method is simple and easy to operate, requires short time and simple equipment and makes product cost low. The densified wood manufactured by the method of the invention is greatly improved in surface density, hardness and wear resistance.

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.

The invention relates to a rattan treatment agent for wickerwork, which comprises mustard, salvia officinalis, fruit of cubeb litsea tree, allspice, rod chilli, monkshood, folium artemisiae argyi, fructus evodiae, clove and remote lemongrass Herb. The rattan treatment agent provided by the invention is prepared by adopting pure traditional Chinese medicines, the rattan is treated by adopting a soaking mode, the process is simple and good in effect, juice decocted by the treatment agent can be repeatedly utilized, the insect-resistant and anti-mould effect of the treated rattan can be over 10 years, and the rattan treatment agent has faint scent and does not have a side effect on the skin and body.