85results about "Wood heating" patented technology

The utility model relates to a progressive striking type high-frequency compaction assembly line. The progressive striking type high-frequency compaction assembly line comprises operation equipment and a bearing component, the operation equipment comprises a preheating part, a high-frequency hot-pressing part and a water-cooling cold-pressing wood striking part; the high-frequency hot-pressing part comprises a plurality of high-frequency hot-pressing machines, a moving roller way of each high-frequency hot-pressing machine extends from an internal hot-pressing station to inlets and outlets in the two sides to be exposed, and the adjacent exposed moving roller ways are in butt joint; the water-cooling cold-pressing wood striking part comprises a plurality of water-cooling cold-pressing machines, a movable roller way of each water-cooling cold-pressing machine extends and is exposed towards inlets and outlets in the two sides from an internal pressing station, and the adjacent exposed movable roller ways are in butt joint; the bearing component is a tray which is arranged below the wood board and used for bearing the wood board. According to the production line, the high-frequency hot-pressing part, the water-cooling cold-pressing wood striking part and the bearing component are used, on the premise that the thickness of a wood board is allowed to rebound, the technical problems that in the prior art, due to the fact that an upper pressing plate and a lower pressing plate are needed for clamping and pressure maintaining, operation is complex, and process step adjustment is limited in the production line circulation process are solved, and the rebound problem is solved.

A method of treating a cellulose-based material, for example wood and engineered wood is provided, wherein the process involves the following steps: selecting and placing the cellulose-based material in a treatment chamber; impregnating the cellulose-based material with an impregnating agent consisting of an aqueous solution comprising a fluid suitable for esterification; facilitating a hydrolysis process whereby the impregnating agent reacts resulting in the formation of esters and polyesters inside the cellulosed-based material.

A method for forming an engineered veneer block includes stacking a plurality of laminate layers. The method also includes spreading a bonding agent between each layer of the plurality of laminate layers. The bonding agent includes an adhesive. The adhesive consists essentially of one or more no added formaldehyde adhesives. The method also includes slicing an engineered veneer from the engineered veneer block. The engineered veneer has a thickness in the range of 0.1 millimeters to 0.5 millimeters.

The invention relates to the technical field of bamboo processing and modification treatment, and discloses a method for improving high-permeability bamboo modification, which comprises the following steps: preparing a mixed aqueous solution of 9.25-37 mmol / L of alkali compound and 9.3-27.8 mmol / L of persulfate, and dipping bamboo at normal temperature for 3-6 hours; the soaked bamboo wood is heated and activated, and the activation mode is selected from one of 60-80 DEG C constant-temperature water bath treatment, 300-550 W microwave radiation treatment or 100-400 W ultrasonic radiation treatment; and after the activated bamboo wood is cleaned to be neutral, freeze drying is conducted at the temperature ranging from-50 DEG C to-70 DEG C. According to the method, free radicals generated by alkali liquor swelling and synergistic thermal activation of persulfate are utilized, bamboo blocking pore extracts are oxidized and degraded, a fluid conduction path is dredged, the permeability and porosity of the bamboo are improved, the original mechanical strength of the bamboo is kept, and the technical problems that traditional modified liquid medicine is difficult to permeate, and a skeleton is damaged due to strong base treatment are solved.

Provided is a method for producing colored wood, the method including: a step of impregnating a block of wood with an organic acid aqueous solution containing an organic acid; and a step of performing steam treatment at high temperature and high pressure on the block of wood in a wet state of being impregnated with the organic acid aqueous solution while keeping the block of wood in the wet state. In the steam treatment, the temperature is 110° C. or more and 160° C. or less and the pressure is a saturated steam pressure at the temperature.

This invention relates to the field of wood processing technology, and provides a novel method for preparing slicing from the decay and softening of extra-hardwood. The method includes the following steps: immersing a wood sample in a water-filled container, first applying a vacuum, then depressurizing and maintaining the pressure for a period of time to allow liquid water to penetrate the wood cell cavities; heating the immersed sample and applying a vacuum again to cause the liquid water to boil and vaporize; extracting the sample after the bursting treatment with cold and hot water sequentially to remove extractives from the wood and reduce its decay resistance; adjusting the moisture content; treating the sample with brown rot fungi to cause decay and softening on the axial surface of the sample; soaking the sample in water and then freezing it until it is solid, followed by slicing. This invention can successfully produce slicings of extra-hardwood, providing a strong theoretical foundation and technical means for studying the structure of extra-hardwood, predicting its physical and mechanical properties, and improving its high-value-added processing and utilization.

The invention discloses a production method of flexible high-strength large-breadth thin bamboo strips. The production method comprises the following steps: [1] manufacturing rough planed bamboo strips; (2) carbonizing the bamboo canes; (3) drying the bamboo canes; (4) bamboo board manufacturing; (5) humidifying the bamboo board; the wet laminated bamboo board is directly placed on a slicing machine, the board is fixed through a vacuum adsorption device and sliced, the included angle between the rear angle and the wedge angle of a slicing tool and the horizontal plane of the bamboo board ranges from 15 degrees to 25 degrees, the included angle between the cutting edge of the slicing tool and the slicing feeding direction is the cutting edge inclination angle ranging from 30 degrees to 55 degrees, and micro thin bamboos with the thickness ranging from 0.08 mm to 0.5 mm are obtained through slicing; and (7) drying and laminating are conducted, specifically, the micro thin bamboo is manually leveled and fed into a drying machine, the hot air drying temperature ranges from 70 DEG C to 120 DEG C, the hot air speed ranges from 6 m / s to 8 m / s, the micro thin bamboo is dried till the water content is lower than 12%, then the micro thin bamboo enters a laminating machine, the micro thin bamboo and a polymer film are compounded at the temperature ranging from 70 DEG C to 190 DEG C, or the micro thin bamboo and paper are glued, and the large-breadth micro thin bamboo material is prepared. The finished product rate of sliced thin bamboos is increased, and the application field of bamboos is greatly expanded.

Disclosed is a process for the production of coloured acetylated wood. Herein wood is subjected to a wood acetylation treatment and a wood colouring treatment. The wood colouring treatment comprises subjecting the wood to impregnation with a liquid comprising a colouring agent so as to provide impregnated wood, and subjecting the impregnated wood to a drying process to remove liquid from the impregnated wood by evaporation.

The present invention discloses a method for producing a modified wooden material. Specifically disclosed is a method for producing a modified wooden material, said method comprising: 1) a step for causing permeation, into a wooden material, of a 5-hydroxymethylfurfural (5-HMF) resinification solution containing 5-HMF and an inorganic salt for promoting polymerization of the 5-HMF; and 2) a step for polymerizing the 5-HMF of the permeated 5-HMF resinification solution in the wooden material by means of heating.

This relates to a high-frequency consolidation flow line that sequentially lays down wood. [Solution] The operating equipment includes a preheating section, a high-frequency hot crimping section, and a water-cooled cold crimping wood laying section. The high-frequency hot crimping section includes several high-frequency hot crimping machines, the moving roller tables of each high-frequency hot crimping machine extend from the internal hot crimping work station toward the entrances on both sides and are exposed to the outside, with adjacent externally exposed moving roller tables butting against each other. The water-cooled cold crimping wood laying section includes several water-cooled cold crimping machines, the moving roller tables of each water-cooled cold crimping machine extend from the internal crimping work station toward the entrances on both sides and are exposed to the outside, with adjacent externally exposed moving roller tables butting against each other. The support members are trays placed beneath the wood boards to support them. The flow line is used for the support members by the high-frequency hot crimping section and the water-cooled cold crimping wood laying section, allowing for springback of the wood board thickness.

The invention discloses a plate splicing machine with an automatic vertical splicing function, and relates to the technical field of plate splicing machines, the plate splicing machine comprises a machine body, a conveying assembly is arranged on the left side of the machine body, a glue wrapping device is slidably mounted above the conveying assembly, a clamping device is arranged below the glue wrapping device, and an electric push rod fixedly penetrates through the upper portion of the machine body; an electric push rod is arranged on the machine body, a leveling device is arranged at the output end of the electric push rod, a material taking assembly is arranged below the machine body, a groove is formed in the inner wall of the machine body, a sliding plate is installed in the groove in a sliding mode, a switch is fixedly arranged at the bottom of the groove, and a heating fan is arranged below the material taking assembly. And the situation that follow-up machining cannot be smoothly conducted due to the fact that the wood plates deviate in the transportation process and collide with the machine body shell is avoided, the leveling device plays a role in leveling the wood plates, the situation that the warping parts of the wood plates affect splicing of the wood plates is prevented, and the splicing quality of the wood plates is improved.

The invention relates to the field of plywood hot pressing, in particular to an atomization mechanism for a plywood hot press, which comprises a hot press main body, a plurality of hot pressing plates are arranged in the hot press main body, and the atomization mechanism is arranged on one side of the hot press main body. The atomization mechanism comprises an atomization platform, a material pushing mechanism, an atomization mechanism body, a damp clearing mechanism and an adjusting mechanism. According to the scheme, the atomization platform is arranged before the plywood entering the hot pressing plate in the early stage enters, superfine atomization spraying is conducted on the surface of the plywood, the moisture evaporation problem caused by the high temperature of the hot pressing plate before the plywood enters the hot pressing machine can be compensated, the situation that the bonding strength is reduced due to premature drying of a glue layer is effectively avoided, and the hot pressing quality stability is remarkably improved; the material pushing mechanism can sequentially push the plywood into the atomization area and the hot pressing plate from the atomization platform according to the set rhythm, and the plywood can be automatically centered and positioned before entering the atomization area by matching with the adjusting mechanism, so that the plywood obtains consistent and uniform pre-wetting conditions before being fed into the hot pressing machine.

The application discloses a kind of wood surface photochromic coating and its preparation method, preparation method includes the following steps: preparation chitosan solution and transition metal oxide solution, wood is placed in the container with chitosan solution, the top and bottom of container are placed anode and cathode in parallel, direct current electric field is applied in the direction perpendicular to the surface to be loaded of substrate, after drying, wood is placed in the container with transition metal oxide solution, the top and bottom of container are placed cathode and anode in parallel, direct current electric field is applied in the direction perpendicular to the surface to be loaded of substrate, with the first chitosan and the first transition metal oxide solution of loading as a cycle, repeat cycle loading 5~10 times, obtain the wood substrate with photochromic coating, the application can quickly complete on the surface of wood substrate photochromic coating, sample is irradiated by ultraviolet light for about 15min, discoloration phenomenon is remarkable, color is basically restored after 24h shading.

Provided is a method for producing compressed wood, including: an impregnation step of pressure-impregnating a block of wood having a thickness of 3 mm or more with an organic acid aqueous solution containing an organic acid; a drying step of drying the wood, in a wet state, which has been impregnated with the organic acid aqueous solution; a compression step of compressing the wood, which has been dried, while heating to 140 °C or more; and a heating step of heating the wood, which has been compressed, without compression.

The application discloses a kind of damp-proof antibacterial high-density fiber board and preparation method thereof, belong to technical field.The damp-proof antibacterial high-density fiber board includes the following components by weight parts: 30-50 parts modified wood fiber, 20-25 parts adhesive, 10-15 parts nano calcium carbonate, 2-5 parts sodium silicate;The raw material of the application is simple, and the operation process is simple, and the operating condition is easy to control;The damp-proof antibacterial high-density fiber board prepared by the application is stable in nature, and has good damp-proof effect, antibacterial effect, strong practicality, strong adaptability, and is suitable for large-scale production and application.

The invention discloses bamboo bending forming equipment based on a thermal-mechanical coupling principle. Comprising a working table, a feeding station, a preheating station and a heating, bending and shaping station are sequentially arranged on the table top of the working table in the direction from feeding to discharging, a pushing mechanism, a preheating mechanism and a heating and shaping mechanism are correspondingly arranged, and a continuous machining assembly line is formed. The pushing mechanism can adaptively clamp and push bamboo materials with different diameters; the preheating mechanism is used for uniformly preheating the to-be-bent part of the bamboo so as to soften fibers and reduce the brittleness; and the heating and shaping mechanism is used for carrying out segmented heating and synchronous bending on the preheated part and carrying out rapid cooling and shaping by sprinkling water. The cracking risk is reduced through preheating, efficient, high-precision and automatic bending forming of bamboo wood is achieved through the heat-force synchronous effect and instant cooling shaping, the problems that in a traditional technology, the forming quality is poor, labor is relied on, and the product consistency is low are solved, and the method is particularly suitable for batch production of complex bent bamboo components in the field of buildings and furniture.

The plant material may be infiltrated with a solution having a stabilizer and / or a stabilizer precursor. The stabilizers and / or precursors may be absorbed within amorphous and / or hemicellulosic regions of the cell wall of the plant material. After permeation, the amorphous cellulose and / or hemicellulose may be cross-linked with the stabilizer. The stabilizer precursor may include a nucleophilic agent and an electrophilic agent, and the stabilizer may include a reaction product of a nucleophilic agent and an electrophilic agent. Each of the stabilizer and / or the precursor may have a molecular weight of less than or equal to 500 g / mol during permeation. After cross-linking, the stabilizer may impart higher water stability to the plant material, in particular, to limit swelling of the plant material regardless of the duration of exposure to water and / or the amount of water absorbed by the plant material.

The present invention relates to thermal or thermo-mechanical treatment of hygroscopic materials to adjust material properties. The present invention relates to an apparatus for modifying hygroscopic materials. The modification apparatus comprises a modification unit (202) and a fluid container (204) coupled to at least one fluid opening (203) via a control valve (205). The modification apparatus is configured to heat the hygroscopic material in the modification unit (202) to extract water from the hygroscopic material and to direct the fluid from the fluid container through the at least one fluid opening (203) into the modification unit (202) in response to opening of the control valve (205). The modification apparatus further comprises a treatment agent (207) that is added to the fluid, such that the treatment agent is absorbed into the hygroscopic material and modifies it. The treatment agent (207) comprises at least one of the following components: preservatives, dyes, pigments, fragrances, deodorants, insecticides, impregnation components, or flame retardants.

The present invention relates to a heating element for a wood drying device, and a wood drying device, comprising: a corrugated metal plate interposed between upper and lower stacked wood pieces and having alternating peaks and valleys; a heating cable which generates heat when power is applied; and a plurality of heat transfer pipes which are tightly bonded to the corrugated metal plate between the peaks and valleys of the corrugated metal plate to reinforce the strength of the corrugated metal plate, and into which the heating cable is sequentially inserted to transfer heat generated from the heating cable to the corrugated metal plate. The present invention is capable of uniformly transferring heat to the entire wood piece with a very simple structure, greatly improving the efficiency of heat transfer from the heating cable to the corrugated metal plate, greatly extending the service life of the heating element, and greatly improving the convenience of stacking wood pieces for drying wood.

This invention relates to a method for preparing dimensionally stable smart indicator labels using wood with retained lignin. It addresses the technical problems of existing blending methods for preparing smart indicator films, such as high cost and difficulty in identifying color changes due to humidity and transparency variations. The method involves: mixing epichlorohydrin, triethylamine, and ethanol to obtain a reaction solution; soaking poplar veneer in an alkaline solution to swell it before adding it to the reaction solution to obtain quaternized poplar veneer; then immersing the quaternized poplar veneer in a dye solution to adsorb bromothymol blue, followed by soaking in deionized water until neutral, and freeze-drying to obtain the smart indicator label. This label is highly sensitive to acetic acid gas, exhibiting a clear color change. When indicating milk freshness, the label changes from blue to green when °T is near the critical value specified by the national standard, providing a quick and accurate indication of milk freshness. This invention's smart indicator label can be used in the field of food testing.

The present application relates to a kind of progressive wood type high frequency compaction assembly line, including operating equipment and bearing component.The operating equipment includes preheating unit, high-frequency hot pressing unit and water-cooled cold pressing wood unit;High-frequency hot pressing unit includes several high-frequency hot presses, and the moving roller of each high-frequency hot press extends from the inside hot pressing station to the import and export of both sides and is exposed, and the adjacent exposed moving roller is butt joint;Water-cooled cold pressing wood unit includes several water-cooled cold presses, and the moving roller of each water-cooled cold press extends from the inside pressing station to the import and export of both sides and is exposed, and the adjacent exposed moving roller is butt joint;Bearing component is the tray that is placed under the wood board and supports wood board.The assembly line is used by high-frequency hot pressing unit and water-cooled cold pressing wood unit, bearing component, changes the technical problem that prior art needs to press plate clamping pressure retention in the process of production line circulation due to up and down, under the premise of allowing wood board thickness rebound, and process step adjustment is limited, and solve rebound problem.

The present application relates to the technical field of wood processing, in particular to a drying method for inhibiting large-section wood cracking. The present application adopts heating softening treatment, modification treatment, modification recovery treatment and drying treatment on sawn timber in sequence to obtain dried wood. If cracks are found during the drying treatment, the modification recovery treatment is continued and the drying treatment is performed again. The drying method of the present application can inhibit both surface cracking and internal cracking of wood, has fewer treatment procedures, low treatment cost, and maintains the mechanical strength of large-section wood containing pith. In the present application, residual stress elimination treatment can be performed on the dried wood to release the residual stress, thereby providing a theoretical basis for obtaining high-quality wood.

The invention belongs to the technical field of building auxiliary materials, and relates to a processing method of a longan wood solid wood composite floor, which comprises the following steps: screening 30-60-year-old longan wood log, and pretreating the longan wood log into square timber; the moisture content of the square timber is controlled to be 6-12% through a special gradient process of pre-drying, low-temperature balance drying and high-temperature shaping drying; slicing the square timber into 4-6mm veneers, sorting and repairing the veneers, and splicing the veneers into a whole surface board through finger joint extension and tooth joint widening; and gluing, hot-pressing and compounding with a multi-layer solid wood base material, and carrying out mortise and tenon joint processing, water-based coating and inspection to obtain a finished product. According to the method, waste wood of longan fruit trees is used as a raw material, resource utilization of waste is achieved, large cutting equipment is not needed in the splicing process, and sizing is carried out through precise control of three-stage drying and assistance of self-developed longan shell biomass glue. The problems that longan wood is high in hardness and water is difficult to release are solved, the wear resistance of the prepared longan wood composite floor is larger than or equal to 600 revolutions, the prepared longan wood composite floor is free of delamination after being soaked for 24 hours, stability and attractiveness are both considered, the environment-friendly trend is met, and large-scale production is facilitated.

The present application relates to the technical field of green building materials, in particular to a kind of layerboard pin joint wood and its preparation method.Layerboard pin joint wood is made of two or more than two layerboards stacked and connected by memory recovery wood pin, and the layerboard and memory recovery wood pin use the same tree species wood or tree species wood with similar physical and mechanical properties.Layerboard pin joint wood is prepared by memory recovery wood pin made by low-temperature hydrothermal compression wood, including preheating, pressure application, preliminary shaping, deformation fixation and wood pin preparation steps, which can solve the problem of inconsistent deformation coordination between wood pin and layerboard in long-term use of layerboard pin joint wood, and ensure the bearing performance and long-term safe application of layerboard pin joint wood.

The invention discloses pretreatment equipment for efficiently mixing biological enzyme and wood chips, and relates to the technical field of biomass pretreatment, a steam box is of a hollow box type structure, and the bottom end of the steam box is in through connection with a spiral conveying pipe; the quantifying box is of a hollow cylinder structure with a lower opening, the quantifying box is fixed to the supporting base through a supporting plate, and the steam box is located on the left side of the supporting base; the quantifying plate is slidably arranged on the supporting base through a protection assembly, the quantifying plate and the quantifying box are arranged in a matched and abutting mode, and a plurality of quantifying grooves are formed in the quantifying plate at equal intervals in a penetrating mode; the mixing box is fixed to the supporting base and located on the right side of the quantifying box, and the quantifying plate is movably inserted into the mixing box; the mixing assembly is arranged in the mixing box and abuts against the quantitative plate in a matched mode. And through cooperation of the quantifying box and the quantifying plate, quantitative wood chips enter the mixing box, and the quantitative wood chips make contact with the biological enzyme, so that the mixing efficiency is improved.

The invention relates to a preparation method of a transparent wood packaging film, in particular to a preparation method of a full-bio-based transparent wood film with a full-green process. The technical problems that existing transparent wood is poor in biodegradability, poor in waterproofness, complex in manufacturing process, toxic in reagent and poor in barrier property are solved. The method comprises the steps that after wood is bleached, pores of the wood are filled with a mixed solution of citric acid and sodium carboxymethyl cellulose through vacuum impregnation, and a uniform and compact structure is constructed; the transparency of the transparent wood film is 18%-30%, the haze is 65%-85%, the strength reaches 74-80 MPa, the water vapor transmission rate is (3.5-4.5) * 10 <-10 > g m <-1 > s <-1 > Pa <-1 >, and the transparent wood film has good water resistance and dimensional stability, is biodegradable and can be used in the field of food packaging.

The invention relates to the technical field of bamboo wood, and discloses a modified bamboo wood and a preparation method and application thereof.The preparation method of the modified bamboo wood comprises the following steps that 1, tetraethoxysilane, a silane coupling agent and absolute ethyl alcohol are mixed and then adjusted to be acidic, and a silicon precursor solution is obtained; (2) bamboo wood is soaked in the silicon precursor solution, taken out and dried, and mineralized bamboo wood is obtained; and (3) the mineralized bamboo wood is subjected to densification treatment, and the modified bamboo wood is obtained. The bamboo is mineralized and densified, so that the rigidity and density of the bamboo are improved, the vibration response is reduced, the vibration is effectively inhibited, and when the bamboo is applied to musical instruments, sound box equipment and the like, the sound transmission loss can be more effectively reduced, and the acoustic stability is improved.

The invention provides a method of producing a piece of delignified wood having a porous structure, said method comprising: chemically treating a piece of natural wood to remove at least 90% of lignin from the natural wood while substantially retaining cellulose-based lumina of the natural wood, thereby producing a piece of delignified wood; after the removing, drying the piece of delignified wood by freeze drying or critical point drying, such that the cellulose-based lumina remain open or unobstructed in a cross-sectional view; and after the drying, further chemically treating the piece of delignified wood to be hydrophobic or resistant to weather or salt water, or forming or depositing a coating on exterior surfaces of the delignified wood. The unique microstructure and composition of the delignified wood can provide advantageous thermal insulation properties, among other advantages described herein.

The present disclosure provides a method of drying and dyeing wood, the method comprising feeding a green wood having a varying moisture content into an oven and drying the green wood in the oven. The residence time of the biomass in the oven and the temperature of the oven are selected according to a time and temperature profile based on the pre-drying moisture content of the biomass to produce dry surface wood having a moisture content of about 15% or less at the dry surface. The method further includes conveying the dried surface wood to a dyeing chamber and directly dyeing all sides of the dried surface wood after the drying. A system for carrying out the method and a dyed wood product produced according to the method are also contemplated.

The invention relates to the technical field of wood processing, in particular to an arc-shaped plate radian adjusting assembly and hot-pressing shaping equipment and method. The equipment aims at solving the problems that in the prior art, stress release is uneven due to temperature drop in the thermoplastic transfer process of wood, and axial sliding of a plate is caused by reverse shear force during strong bending. The equipment comprises a working base station, an assembly box body and a door plate, a bottom heating cavity box with a plurality of electric heating rods I and a mold mechanism with a plurality of electric heating rods II are arranged in the box body, and the electric heating rods are connected with a temperature controller to control the heating temperature; the conveying mechanism comprises a bearing roller, a power transmission roller, a driving motor and an adjusting assembly. According to the equipment, a high-elastic-state temperature window of wood can be maintained at a bending contact point, feeding slippage is prevented through hard mechanical locking, and the equipment is suitable for machining of arc-shaped plates.