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Treatment method for wood surface defects

A technology for wood surface and defect treatment, applied in wood processing appliances, irregular removal devices, manufacturing tools, etc., can solve the problems of hard patching, easy formation of black spots, falling off, etc., and achieve the effect of good gluing effect.

Inactive Publication Date: 2012-08-15
GUANGDONG YIHUA TIMBER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The repair blocks formed by these two methods are very hard, and sometimes they will fall off. The surface is often uneven and black spots are easy to form. Foaming during the instant curing adhesive treatment will also form pinholes on the repair block. These Insufficient will cause inconvenience to the subsequent processing and affect the appearance of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] This embodiment is the processing method to the surface crack defect of birch, and the steps are as follows:

[0016] (1) Sand and polish the surface with an abrasive belt, and then use compressed air to clean the dust on the board surface. If there is oil stain, use alcohol and other solvents to clean it;

[0017] (2) Spray and wet the surface with 50% ethanol;

[0018] (3) Divide the treated birch into two parts, marked as A and B respectively, and then use two different coating methods for treatment:

[0019] A. First apply a layer of isocyanate glue, the amount of glue is 3.88mg / cm 2 , and then brush a layer of 50% ethanol, the surface dry time is 1.8 hours.

[0020] B. First apply a layer of water-based paint, the coating amount is 2.52mg / cm 2 , and then brush a layer of 50% ethanol, the surface dry time is 6 minutes.

[0021] (3) Leave it for more than 12 hours to make it completely dry, sand the surface slightly, and then paint normally with UV.

[0022] The...

Embodiment 2

[0024] This embodiment is the processing method to defects such as larger worm eyes or dead joints or live joints and cracks on the longan wood, and the steps are as follows:

[0025] (1) Dig out the loose knots on the wood surface, then sand and polish the surface with an abrasive belt, and then use compressed air to clean the dust on the board surface. If there is oil stain, use alcohol and other solvents to clean it;

[0026] (2) Use water-based paint to spray and moisten the joint eyes;

[0027] (3) Prepare the putty, the component ratio of the putty is water-based paint: longan wood powder: isocyanate glue = 10:4.5:1;

[0028] (4) Use a putty knife to scrape the joints with the prepared putty so that the surface of the putty is slightly higher than the surface of the wood;

[0029] (5) After surface drying at 10°C~45°C for 2~3 hours, place it until the putty is completely dry, lightly sand the surface to make the putty surface flush with the wood surface, and then apply ...

Embodiment 3

[0032] This embodiment is to the processing method of defects such as less insect eye and crack of mahogany wood, and steps are as follows:

[0033] (1) Use an abrasive belt to sand and polish the surface, use an ear suction ball to blow off the dust in the insect eyes, and if there is oil, use alcohol or other solvents to clean it;

[0034] (2) Use water-based paint to spray and moisten the joint eyes;

[0035] (3) Prepare the putty. The composition ratio of the putty is water-based paint: titanium dioxide: light calcium carbonate: color essence = 10:1:23:0.5;

[0036] (4) Use a putty knife to scrape the joints with the prepared putty so that the surface of the putty is slightly higher than the surface of the wood;

[0037] (5) After surface drying at 10°C~45°C for 2~3 hours, place it until the putty is completely dry, lightly sand the surface to make the putty surface flush with the wood surface, and then apply UV paint normally.

[0038] After multiple ratio tests and per...

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PUM

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Abstract

The invention provides a treatment method for wood surface defects. The treatment method comprises the following steps: (1) cleaning up wood surface defect parts; (2) spraying or wetting the peripheries of the defect parts by using alcohol, an acrylic paint or an adhesive; (3) coating the defect parts by directly using the acrylic paint / the isocyanate adhesive or firstly filling in repairing putty and then coating by using the acrylic paint / the isocyanate adhesive; (4) carrying out indoor natural surface drying for over 3 hours or after baking for 20-120 minutes at the temperature of 30-80 DEG C for complete curing, carrying out light sand treatment on the surface for painting to enable the adhesive or paint to evenly penetrate into the defects so as to achieve a better bonding effect, and ensure that the defect parts cannot crack again in the using process of a repaired wood board, and the acrylic paint and the isocyanate adhesive do not have volatility, thus not polluting the environment and being environmentally-friendly.

Description

technical field [0001] The invention relates to a method for treating wood defects, in particular to a method for treating wood surface defects. Background technique [0002] Defects such as dead knots, cracks, insect holes and resin leakage in wood seriously affect the appearance quality and performance of wood products. If these defective parts are cut off, it will cause a waste of wood resources. In order to improve the comprehensive utilization rate of wood resources, wood product manufacturers often adopt repairing methods, and the repaired wood can continue to be put into production. At present, for relatively large dead joints, wormholes and resin leaks, etc., enterprises often use the method of digging and repairing. Chinese patent CN200810162383.7 "Method for digging and repairing defects of timber squares and panels", CN201020694986.4 "A fast timber Technologies such as "grooving machine" and CN00210501.2 "grooving machine" are designed for digging and repairing, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27G1/00
Inventor 刘壮青孙宏南刘青贵
Owner GUANGDONG YIHUA TIMBER IND
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