100 results about "Wood industry" patented technology

This invention is directed to a method of preparing a natural resin by liquefying wood, bark, forest residues, wood industry residues, or other biomass using rapid destructive distillation (fast pyrolysis). Fast pyrolysis produces both vapors and char from biomass, and following removal of the char from the product vapors, a liquid pitch product is recovered and processed by distillation, evaporation, or a combination thereof, in order to obtain a natural resin which may be in either liquid or solid form. The natural resin comprises a total phenolic content from about 30% to about 80% (w/w), and is a highly-reactive ligninic compound that has been found to be suitable for use within resin formulations without requiring any further extraction or fractionation procedures. Resins comprising up to 60% natural resin have been prepared and tested in board production and found to exhibit similar properties associated with commercially available resins. The natural resin may substitute for phenol, or for both phenol and formaldehyde within phenol-containing resins. Similarly, the natural resin can replace a substantial part of the components within urea-containing resins.

The invention discloses a reactive polyurethane hot-melt adhesive for edge sealing in wood industry, which is prepared from the following raw materials in percentage by weight: 10-30% of crystalline polyester polyol, 10-30% of amorphous polyester polyol, 8-15% of high-molecular-weight thermoplastic resin, 10-25% of diisocyanate, 1-8% of plasticizer, 10-30% of inorganic filler, 0.05-0.5% of antioxidant and 0.05-0.5% of ultraviolet absorbent. In addition, the invention also discloses a preparation method of the reactive polyurethane hot-melt adhesive. The adhesive disclosed by the invention has the advantages of extremely high drying speed, excellent initial bonding strength and final strength, high heat resistance, high storage stability, excellent environment friendliness, simple preparation technique, low cost and the like. The invention can well satisfy the requirements for edge sealing in wood industry, and is beneficial to industrialization of edge sealing production in wood industry.

The invention discloses an environmental protection adhesive for timber industry, prepared of a formula comprising: PVA 5-10wt%, silica solution 10-20wt%, glycol 0.2-0.35wt%, polyacrylamide 0.03-0.05wt%, mildew- proof germicide 0-0.1wt%, fillings 10-12wt%, and water the rest. It does not use aldehyde-containing, hydroxybenzene-containing and organic volatile-containing matters as raw materials to form a formula, and the used raw materials have wide sources but no poisonous matters, and besides, these components can excellently cooperate with one another, therefore it has excellent performances of three-aldehyde glue and radically solves a series of problems caused by formaldehyde and organic volatile release.

The invention discloses a resin adhesive free from formaldehyde release as well as a preparation method and an application thereof. The resin adhesive free from formaldehyde release is a urea-glyoxal resin adhesive, and is prepared from urea and glyoxal at a mol ratio of 1:(1-2) through stepwise synthesis. The preparation method comprises the following steps of: raw material preparation, primary synthesis and secondary synthesis, and specifically comprises step of weighing raw materials, dividing glyoxal into two parts, adding urea to the first part of glyoxal and reacting to obtain glyoxal-urea resin oligomer, adding the second part of glyoxal to the oligomer and reacting, and cooling and treating to obtain a target object. The application is the application of the resin adhesive free from formaldehyde release in artificial board production in wood industry, clothing manufacturing and paper-making production. The resin adhesive free from formaldehyde release is stable in structure, free from formaldehyde release and excellent in performance, and is applicable to production of artificial board, in particular of plywood and chipboard, as well as to clothing manufacturing, paper making and other fields.

The invention relates to a new process of utilizing single-board/plastic film composite for manufacturing formaldehyde-free bending glued furniture parts. A plastic film serves as bonding material, a wooden single board serves as a basic unit, rolling hole processing is performed on a single board gluing face, tree type, thickness and specification of the single board are selected according to product usage, and a blank can be assembled, the board blank is placed in a special die to heat and press in high frequency, the board blank is bent, glued and formed, the plastic film is solidified after being cooled, and formaldehyde-free bending glued furniture parts are obtained. The process is simple and low in producing cost; the products are free of pollution and recyclable during manufacture, processing and usage, and has the advantages of environment protection, energy efficiency and efficiency, an environment friendly, safe and healthy consumption concept of the wood industry and the furniture industry can be met, and the process has extensive application value.

The invention relates to wood industry automation technology, and provides an intelligent detection method for wood optimizing cut-off saw based on deep learning. The method comprises the following steps: automatically identifying defects and wood grades through the algorithms of image processing and deep learning to determine the actual location of defects and wood grades; and determining a finalcut-off list according to the calculation principle, and transmitting the list to an action actuator to cut the wood. The invention can complete the task of removal of wood defects and classificationof grades in the optimizing cut-off saw without manual participation, which completely realizes unattended operation, and has high degree of automation and strong fault tolerance, so that the efficiency of wood processing and the automation level of the industry can be improved.

The invention discloses a manufacturing method for an environment-friendly energy-saving fireproof antimagnetic and antistatic floor. The method comprises the steps that fire retardants, wood fibers, carbon fibers, urea-formaldehyde glue, waterproofing agent of paraffin, chemical addition agents and the like are adopted, and an environment-friendly energy-saving fireproof anti-magnetic-radiation and antistatic density board is formed at a time through high temperature and high pressure after preparation of the fire retardants, fiber glue mixing and layered pavement. The method has the advantages that 1, the mechanical property is improved; 2, the good fireproof performance is achieved and meets the standard of the level B or the level C of GB8264; 3, the anti-electromagnetic, anti-radiation, antistatic and electric conduction functions are achieved; 4, the formaldehyde emission is lower than the national standard; 5, sufficient reuse of three-remains waste wood of forests and industrial waste-grade carbon fibers is achieved, the waste material is changed into the things of value, a large number of forest resources are saved, the cost is reduced, and the environment is protected effectively.

The invention discloses a method of treating eucalyptus urophylla to extract squalene by a complex enzyme method. The method comprises the following steps: (1), preparing materials; (2), carrying out complex enzyme treatment; (3), extracting; (4), carrying out molecular distillation; and (5), collecting squalene. The method disclosed by the invention has the advantages that usage amount of a solvent can be reduced, extracting and separating steps are simpler and industrial production needs are satisfied; and meanwhile, an industry chain of the wood industry and papermaking-pulping can be prolonged, and economic value of the eucalyptus urophylla is improved.

A cloth bag dust removal box for wood industry according to the present invention belongs to the field of dust removal, and includes a box body and a dust removal bag. The chamber, the left chamber and the lower part of the right chamber are fixed with horizontal plates, and the horizontal plates are evenly distributed with circular sockets, and the circular cages with bottom openings are inserted and installed on the circular sockets. The cages are covered with dust-removing cloth bags, and the bottoms of the left chamber and the right chamber are provided with branches connected to the main pipe, and switching paddles are provided at the triangular connection between the branch road and the main pipe. A cloth bag dedusting box for wood industry of the present invention has the characteristics of simple structure, reasonable design, convenient use, can replace the cloth bag in the process of use, does not affect the continuity of dust removal work, etc., and divides the dedusting box into two separate Each chamber works alternately, and the dust bag in the other chamber can be removed for cleaning while one chamber is working.

The invention discloses a water glue powder for the wood industry, and a production method for the water glue powder. The water glue powder can completely replace glue and a filling material which are used in a plywood production process. The water glue powder is a solid powder, and can be directly used after being uniformly mixed with water of which the weight is twice of that of the water glue powder, without adding other filling materials; the water glue powder is low in manufacturing cost, environment-friendly, long in shelf life and easy to transport, and is prepared from the following components in parts by weight: 8-20 parts of polyvinyl acetate, 20-30 parts of starch, 0.01-0.05 part of an antioxidant, 2-5 parts of stearic acid, 5 parts of melamine, 10 parts of polyvinyl alcohol, 15-25 parts of oxidized starch, 0.5 part of borax and 7-15 parts of attapulgite.

The invention discloses a wood industry plate drying device, and relates to the technical field of wood industry processing. The device comprises a drying box, wherein a drying mechanism and a plate placing mechanism are arranged in the drying box, and a circulation drying mechanism is arranged outside the drying box; the plate placing mechanism comprises fixed side plates fixedly arranged on thetwo sides of the interior of the drying box, and a placement rack is arranged between the two fixed side plates; sliding side plates are fixedly connected to the two sides of the placement rack, and the end parts of the sliding side plates are fixedly connected with an end plate; and the drying mechanism comprises an air return pipe and a hot air pipe arranged in the drying box, and the end part of the hot air pipe is fixedly provided with an air exhaust head. According to the drying device, the wood industry board can be conveniently moved into the drying box through arranging the plate placing mechanism, the plate can be dried through arranging the drying mechanism, and wet hot air in the drying box can be dried through arranging the drying device, so that cyclic utilization of the hotair is achieved, and the energy saving performance is high.

The invention discloses a manufacturing method for an environment-friendly energy-saving fireproof anti-electromagnetic radiation composite door. The method comprises the steps that fire retardants, wood fibers, carbon fibers, urea-formaldehyde glue, waterproofing agent of paraffin, chemical addition agents and the like are adopted, and an environment-friendly energy-saving fireproof anti-electromagnetic radiation antistatic density board is formed at a time through high temperature and high pressure after preparation of the fire retardants, fiber glue mixing and layered pavement. The method has the beneficial effects that 1, the mechanical property is improved; 2, the good fireproof performance is achieved and meets the standard of the level B or the level C of GB8264; 3, the anti-electromagnetic radiation antistatic and electric conduction functions are achieved; 4, the formaldehyde emission is lower than the national standard; 5, sufficient reuse of three-remains waste wood of forests and industrial waste-grade carbon fibers is achieved, the waste material is changed into the things of value, a large number of forest resources are saved, the cost is reduced, and the environment is protected effectively.

The invention discloses a wood furniture drying device based on a ground source heat pump system, which includes a device host, a circulation pump, an isolation board, a compressor, an evaporator, a drying chamber, a heating area, a hot air channel, a drying area, and a spray paint Furniture, air outlet duct, exhaust chimney, air purifier, condenser, intake fan, outer wall of drying room, closed door guide rail, closed door, lock hole, closed door sealing strip, closed door handle, closed door outer lock, fan Shell, fan shaft and fan blades, the interior of the main unit of the equipment is divided into two chambers by a partition plate, a circulation pump and a compressor are respectively installed in the two chambers, and the circulation pump and compressor are connected through a sealed pipeline , the output end of the compressor is connected to the evaporator. The present invention adopts the ground source heat pump system to heat the air to dry the painted furniture, which is more energy-saving, and the present invention purifies the anti-corrosion paint on the painted furniture and the harmful components volatilized in the air, which is more environmentally friendly.

The invention discloses an efficient wood industry board drying device. The efficient wood industry board drying device comprises a top-opened drying box, the top of the drying box is rotationally connected with a box cover matched with the opening of the drying box through hinges, the two opposite inner side walls of the drying box are rotationally connected with connecting plates through rotating shafts, the bottom ends of the side walls, close to each other, of the two connecting plates are jointly and fixedly connected with a first mesh plate, the top ends of the side walls, close to eachother, of the two connecting plates are jointly and fixedly connected with a limiting plate, a row of square holes which are uniformly distributed are formed in the top of the limiting plate, a row ofgrooves corresponding to the row of square holes are formed in the top of the first mesh plate, limiting mechanisms corresponding to the limiting plate are arranged at the tops of the two connectingplates, and a first straight gear fixedly sleeves the outer side wall of one rotating shaft. According to the efficient wood industry board drying device, a wood industry board needing to be dried isrotated by 360 degrees so that the wood industry board can be more comprehensively dried by hot air, and then the drying efficiency of the wood industry board is greatly improved.

The invention provides a high-temperature cured type esterification modified cassava starch adhesive and a preparation method thereof and belongs to the technical field of adhesive preparation. At present, raw materials of adhesives generally used in the wood industry are non-renewable. The high-temperature cured type esterification modified cassava starch adhesive is mainly prepared from, by weight, 80-100 parts of modified cassava starch adhesive, 7-12 parts of isocyanate, 0.5-1.5 parts of antioxygen, 0.5-2 parts of flame retardant, 0.02-0.2 part of light stabilizer and 0.5-1 part of ultraviolet light absorber, wherein the modified cassava starch adhesive comprises cassava starch, polyvinyl alcohol, sodium dodecyl sulfate and dodecenyl succinic anhydride. The high-temperature cured type esterification modified cassava starch adhesive is moderate in viscosity, stable in storing and slow in layering. The preparation process is simple and easy to operate. The consumed time is short. The high-temperature cured type esterification modified cassava starch adhesive is excellent in water resistant performance and bonding strength, and industrial production is likely to be realized.

The invention discloses a high-yield citrus limon planting method and relates to the technical field of citrus limon planting. The high-yield citrus limon planting method comprises the specific steps of planting land selection and land preparation, planting and complementary planting, orchard management and disease and pest control. By means of the high-yield citrus limon planting method, the survival rate is high; citrus limon has the beneficial effects of being great in adaptability and high in yield; economic output of a citrus limon orchard is high; it is helpful to promote citrus limon industrialization development of China; the fruit self-sufficiency rate of China can be increased; and the method is a strategic measure for cultivating and expanding the citrus limon wood industry and guaranteeing lemon supply of China.