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Extruding dyeing method of thin wood plate

A dyeing method and technology for wood, applied in wood treatment, wood processing equipment, wood treatment details, etc., can solve the problems of large amount of waste water, high energy consumption of thermal diffusion dyeing, and unsuitable for environmental protection requirements.

Inactive Publication Date: 2006-08-16
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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Problems solved by technology

The thermal diffusion dyeing method has high energy consumption, large amount of waste water, and long dyeing time, etc., which is not suitable for today's environmental protection requirements; the decompression and pressure dyeing method requires a high-pressure container and a complete set of vacuum pressure devices, and the dyeing cycle is long, the cost is high, and the production efficiency is low.
The above problems have hindered the development of wood dyeing, and there is an urgent need to develop wood dyeing methods and technologies with high efficiency, low energy consumption and environmental protection requirements

Method used

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  • Extruding dyeing method of thin wood plate

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Embodiment Construction

[0019] The invention discloses a wood veneer extrusion dyeing method, which combines figure 1 as shown in

[0020] The specific operation process is described as follows:

[0021] (1) Preparation of dyeing solution: prepare a suitable wood dyeing solution according to the target color, the coloring agent includes chemical coloring agent or chemical dyestuff, and auxiliary agent corresponding to the coloring agent, and the concentration of the solution is 0.0001% to 5%. The concentration depends on the species of wood to be dyed, the depth of dyeing, the type of dye and other factors. For example, for poplar veneer coloring, dye coloring, use acid dyes, direct dyes, reactive dyes, etc., and use corresponding penetrating agents and color fixing agents as auxiliary agents; when chemical coloring, use pyrogallic acid, catechol etc. as a chromogenic agent, and ferric chloride is used as an auxiliary agent, and the concentration is preferably 0.1% to 0.5%. The dyeing solution can...

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Abstract

A method for dyeing thin wood board by extrusion includes such steps as immersing a thin wood board in dyeing liquid, and extruding by passing it through the gap between a pair of rollers while removing the air and water from wood and absorbing the dye in the wood by negative pressure.

Description

technical field [0001] The invention belongs to the technical field of wood processing, and specifically relates to a wood veneer extrusion dyeing method. technical background [0002] Wood overall staining usually adopts thermal diffusion method and decompression-compression method. The thermal diffusion method is to immerse the veneer in the dyeing solution and heat it to a certain temperature, and use the thermal movement of the dye molecules to penetrate and diffuse into the wood to realize the dyeing of the veneer, which is suitable for veneer dyeing below 2mm; the decompression-pressure method is to use Negative pressure makes the dye solution enter the pores of the wood, and then pressurizes to make the dye solution continue to penetrate and diffuse into the wood to achieve the purpose of overall dyeing, which is suitable for dyeing thicker planks. The thermal diffusion method has high energy consumption, large amount of waste water, and long dyeing time, which is no...

Claims

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Application Information

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IPC IPC(8): B27K5/02
Inventor 王金林李春生刘龙王志同周玉成曲芳陈勇平阎昊鹏郭洪武赵戈
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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