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Wear-resistant composite wood plate working method

A processing method and technology for solid wood panels, which are used in wood processing appliances, bonding of wooden veneers, plywood presses, etc., which can solve the loss of decorative functions, high processing costs, and poor wear resistance and impact resistance of painted surfaces. problems, to achieve the effect of improving physical stability, smooth surface, and shortening curing time

Inactive Publication Date: 2008-03-05
孙维
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of paint processing, a large amount of harmful organic volatiles will be produced. Not only the investment in the paint line is large, the processing requirements are complicated, resulting in high processing costs, but the wear resistance and impact resistance of the paint-treated surface are relatively poor and easy to wear scratch
For this reason, the current composite solid wood floor is formed by impregnating the melamine resin glue to press the wear-resistant decorative layer, composite solid wood substrate and balance paper to solve the problem of poor wear resistance and impact resistance of the final decorative protective layer of the composite solid wood floor. question
However, in the process of pressing the wear-resistant decorative layer, composite solid wood substrate, and balance paper, the moisture content of the veneer is more than 8%, and the moisture content of the veneer is often high when the slab is subjected to high pressure and high temperature after gluing. If it is above 12%, due to the concentration of moisture, the density, strength and stress of the composite substrate will be uneven, and it will cause warping during the thermal process.
Furthermore, the thickness of each layer of veneer is usually the same. Under high temperature and high pressure, the surface veneer is subjected to high temperature and high pressure for a longer time than other layers of materials, which will also cause uneven shrinkage and deformation of the surface veneer and the veneer below it. , eventually causing the composite solid wood board to warp and lose its decorative function
Due to the above reasons, the pass rate of wear-resistant composite solid wood boards is not high
In addition, the conventional wear-resistant composite solid wood board has a high moisture content, and its health preservation time is long, and the production efficiency is not high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1), making slabs.

[0017] Rotate the softened poplar logs into 2mm veneers, the thickness of the top veneer is 5mm, send the veneers to the dryer for drying treatment, and control the moisture content of the veneers to ≤7%, check the list Cracks in the board, and repair the cracks in the veneer, apply hot pressure glue, stack the seven-layer veneer in a criss-cross direction in the fiber direction to form a blank, pre-press the slab with a pressure of 16MPa at a normal temperature of 25°C, and hold the pressure After 20 minutes, put it into the hot press and apply a pressure of 20 MPa. The temperature is controlled at 130°C, and the pressure is maintained for 15 minutes. After natural cooling, use an 80-mesh abrasive belt to sand the slab to determine the thickness, and then stack the slabs in layers. Curing for 24 hours under the conditions of ventilation, temperature 20°C 5°C and humidity 40%-60%, control the moisture content of the slab below 6%, and then sand the ...

Embodiment 2

[0023] (1), making slabs.

[0024] Rotate the softened Liu’an logs into 2.5mm veneers, the thickness of the top veneer is 6mm, send the veneers into the dryer for drying treatment, and control the moisture content of the veneers at 6%, check the list cracks in the veneer, and repair and cut the cracks in the veneer, apply hot pressing glue, stack the eleven-layer veneer in a criss-cross direction in the fiber direction to form a blank, and preform the slab with a pressure of 18MPa at a normal temperature of 25°C. Press, keep the pressure for 30min, then put it into the hot press to apply a pressure of 22MPa, control the temperature at 125°C, keep the pressure for 15min, after natural cooling, use a 130-mesh abrasive belt to sand the slab to determine the thickness, and then the slab The slabs are stacked and stacked under the conditions of ventilation, temperature 20 ℃ ~ 25 ℃ and humidity 40% ~ 60% for 30 hours, the moisture content of the slab is controlled at 5.5%, and then ...

Embodiment 3

[0030] (1), making slabs.

[0031] Rotate the softened Fraxinus mandshurica logs into 2mm veneers, the thickness of the top veneer is 5mm, send the veneers into the dryer for drying treatment, control the moisture content of the veneers below 7%, check veneer cracks, and repair the veneer cracks, apply hot pressure glue, stack the seven-layer veneer criss-cross in the fiber direction to form a blank, and pre-press the slab with a pressure of 16MPa at a normal temperature of 25°C to ensure Press for 25 minutes, then put it into a hot press and apply a pressure of 18MPa, the temperature is controlled at 130°C, and the pressure is kept for 36 minutes. After natural cooling, use a 150-mesh abrasive belt to sand the slab to determine the thickness, and then stack the slabs. Stack them under the conditions of ventilation, temperature 20°C-25°C, and humidity 40%-60% for 36 hours, control the moisture content of the slab below 6%, and then sand the slab with a 150-mesh abrasive belt. ...

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PUM

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Abstract

The present invention relates to a production method of wear-resistant composite wooden plate. Said production method includes the following several steps: cutting log to obtain single plate, drying, water content of single plate is less than or equal to 7%, the thickness of top layer single plate is greater than that of lower portion single plate, gluing, prepressing at normal temperature by using 12MPa-18MPa, retaining pressure for 15 min-20 min, hot-pressing by using 14MPa-22MPa at 110-130 deg.C, retaining pressure for 3 min-12 min, placing wear-resistant decorative layer, hot-pressing by using 14-20MPa at 160-190 deg.C, retaining pressure for 30s-50s, cooling and cutting so as to obtain the invented finished product.

Description

technical field [0001] The invention relates to a processing method for combining wood veneer and other materials into products. Background technique [0002] As we all know, the multi-layer composite solid wood board is made of three layers of solid wood. The surface layer is made of high-quality hardwood slats, the core layer is cork, and the bottom layer is rotary-cut veneer. The composite solid wood board overcomes the anisotropy and deformation of natural wood. At the same time, it also retains the anisotropic characteristics of natural wood, so it is widely used in construction industries such as home improvement. The current multi-layer composite board is based on multi-layer plywood, and its surface layer is made of high-quality hardwood veneer or sliced ​​veneer, coated with urea-formaldehyde resin glue, and formed by hot pressing. [0003] But both solid wood boards and composite solid wood boards need to use paint as the final decorative protective layer on the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27D1/04B27D3/00
Inventor 孙和根
Owner 孙维
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