Process method for manufacturing hard wood by high-frequency warming and solidifying

A process method and high-frequency technology, which is applied in the field of man-made panels, can solve the problems of increasing atmospheric carbon content in boiler exhaust, large mold usage, and high cost of use, so as to achieve environmental protection, product quality improvement, and improvement The effect of capacity

Inactive Publication Date: 2010-07-14
李茂林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the practice of implementing my ZL200710058564.0 invention patent and applying the technology of wood recombination to manufacture high-strength anti-corrosion glulam, it was found that the defects of the cold-pressing and heat-curing process are: the time for heating and curing is long, the energy consumption is high, and the amount of mold used There are many major damages, and the investment in building high-temperature kilns and purchasing molds is high, and the cost of use is high. At the same time, there is also the problem that boiler exhaust smoke increases the carbon content in the atmosphere.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for manufacturing hard wood using high-frequency heating and curing, characterized in that the specific implementation steps are as follows:

[0018] The product specification implemented is: 2460×128×198mm, the blank specification is: 2500×130×200mm, the density of the product after pressing is 0.9, the raw material used is a kind of amorpha branch in the shrub, and the adhesive used is E 0 Grade urea-formaldehyde resin, its cured content is 50%,

[0019] (1) Decompression preparation of pressed materials: Amorpha fruticosa branches are rolled with a roller compactor, and the branches of Amorpha fruticosa are sent into the roller compactor in turn, and the round shape of Amorpha fruticosa is rolled The branch becomes a long and flat wooden thread, and its outer skin is separated from its main branch, and the long and flat wooden thread after peeling is used as a pressing material for subsequent use;

[0020] (2) Drying of standby materials: Drying the elongat...

Embodiment 2

[0026] A method for manufacturing hard wood using high-frequency heating and curing, characterized in that the specific implementation steps are as follows:

[0027] The implemented product specification is: 2460×128×198mm, the blank specification is: 2500×130×200mm, the density of the product after pressing is 1.1, the raw material used is poplar among fast-growing species, and the adhesive used is water-soluble phenolic resin. Its cured product content is 48%,

[0028] (1) Preparation of pressed materials: use a wood rotary cutter to cut the 2500mm long poplar raw material into a wood veneer with a thickness of 1mm, then cut the wood veneer into a 1mm wood strip with a wire cutter. Reserve as pressed material;

[0029] (2) Drying of spare materials: the elongated wood strips made of poplar wood should be dried before dipping. The drying equipment used is a mesh belt dryer. The temperature is 90°C, the wind speed is 5m / s, the mesh belt travel speed is 6m / min, the drying tim...

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Abstract

The invention relates to a process method for manufacturing a hard wood by high-frequency warming and solidifying. The method comprises the following steps of: (1) defibering a wood raw material to prepare a stripped pressed material, (2) drying the pressed material, (3) gumming the dried pressed material by respectively using the urea resin or the phenolic resin, (4) drying the gummed material used by the phenolic resin till the moisture content is between 18% and 22%, (5) assembling and pressing after weighting the materials, and pressing the materials in a special module under a pressure of 550 to 650 kg / cm<2>, (6) warming and solidifying the pressed materials under a temperature ranged from 100 DEG C to 105 DEG C or from140 DEG C to 145 DEG C by using a wood high-frequency warming device so as to glue into an integrated section bar, and (7) sawing the de-molded section bar so as to form a standard product. The method of the invention shortens the warming and solidifying time, promotes the capacity, decreases the investment and the use cost, lowers the smoke discharging and is beneficial to protect environment.

Description

technical field [0001] The invention relates to the field of man-made panels, in particular to a process for producing hard wood by high-frequency heating and curing. Background technique [0002] At present, in order to solve the serious shortage of hard natural wood in the field of artificial board manufacturing, the technology of wood recombination has been applied to make recombined (bamboo) wood with specifications ≥ 2000×100×160mm. A new high-quality material that can replace hard natural wood is provided. The manufacture of this hard (bamboo) wood mainly adopts the process method of cold pressing and heat curing. [0003] In the practice of implementing my ZL200710058564.0 invention patent and applying the technology of wood recombination to manufacture high-strength anti-corrosion glulam, it was found that the defects of the cold-pressing and heat-curing process are: the time for heating and curing is long, the energy consumption is high, and the amount of mold used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27M1/08
Inventor 李茂林
Owner 李茂林
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