Combined lumber and fabrication technique thereof

A manufacturing process and wood square technology, which is applied in the field of encrypted modified wood and its manufacturing process, can solve the problems of insufficient glue strength, low hardness, and seldom used, etc., and achieve the effect of increasing added value

Inactive Publication Date: 2010-08-04
SINO FOREST CHINA INVESTMENTS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because this method glue does not really cure the bonding strength of the product, the hardness is very low, and its bonding strength cannot reach the level of Type III plywood, and the density is only 0.4g / cm 3 Below, it cannot be used as board square material and hard surface material over 2 mm
[0004] Another way to increase the density of wood is to impregnate and encrypt the wood chips, and then combine them directly into plywood after drying. Although this method can improve the hardness of the board, it cannot produce imitation natural texture and has no decoration, so it is rarely used.

Method used

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  • Combined lumber and fabrication technique thereof
  • Combined lumber and fabrication technique thereof
  • Combined lumber and fabrication technique thereof

Examples

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example 1

[0048] Example 1: use Guangdong artificial fast-growing eucalyptus, its density is 0.5g / cm 3 , using this process to rotary cut wood chips with a thickness of 1.2 mm, a width of 360 mm, and a length of 2500 mm, put the wood chips into a pressurized dyeing tank, and then suck in the pre-heated dyeing solution by vacuum, heat and start the cycle to make the solution uniform, at 105 ° C , pressure 0.4Mp, hold for 60 minutes to stop dyeing, cool down and relieve pressure, take it out, use a drum dryer to dry to a moisture content below 12%, and then apply phenolic resin glue on one side, the glue amount is 160 grams per square meter, and then place it on the Assemble the billets on the double-arc mold, and use wood chips of different colors to produce color patterns. In this example, two sheets of natural color and one red, two sheets of natural color and one blue, and two sheets of natural color and one green. Each sheet must be aligned on one side and combined into When the heig...

example 2

[0049] Example 2: Its density is 0.45g / cm with artificial fast-growing lotus 3 , using this process to rotary cut wood chips with a thickness of 0.8mm, a width of 360mm, and a length of 2500mm, put the wood chips into a pressurized dyeing tank, keep the pressure at 103°C and 0.3Mp, and stop dyeing after 60 minutes, take it out after cooling down and releasing the pressure, and use a drum to dry Machine dried until the moisture content is below 12%, then put it into a pressure tank for encryption. In this example, phenolic resin is used as the encryption agent. The tank press equipment adopts a pressure tank with the function of flexing the solvent. Keep Mp for 90 minutes to release the pressure and take it out. When the wood chip is taken out after impregnation, use the tubular discharge hole 6 compressed air to blow off the surface glue on both sides of the wood chip. Figure 4 In the process, the surface glue blown out flows back into the tank or tank to reduce waste and fac...

example 3

[0050] Example 3: with artificial fast-growing forest poplar, its density is 0.3g / cm 3 , using this process to rotary cut wood chips with a thickness of 1.5mm, a width of 360mm, and a length of 2500mm, put the wood chips into a pressurized dyeing tank, keep the pressure at 101°C and the pressure of 0.35Mp, and stop dyeing after 60 minutes, take it out after cooling down and releasing the pressure, and use a drum to dry Machine dried to less than 12% moisture content and put into pressure tank for encryption. In this example, phenolic resin is used as the encryption agent. The tank press equipment adopts a pressure tank with the function of flexing the solvent. (Similar to the dyeing pressure vessel) first vacuumize and then inhale for encryption Then pressurize to 0.8Mp and keep it for 60 minutes to release the pressure and take it out. After the impregnation is finished, use the tubular row of compressed air to blow off the surface glue on both sides of the wood chips (such as...

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Abstract

The invention discloses a combined lumber and a fabrication technique thereof. The invention needs to solve the technical problem on how to enhance the density and hardness of the lumber and bring imitative natural wood grains to the lumber. The manufacturing method of combined lumber: slicing, dyeing, drying, assembly, pressing and hot precuring; the lumber is longitudinally cut into two parts which are respectively placed on both sides of another lumber, multi-colored filling wood sheets are filled in concave-convex joints and glued, and the lumbers are pressed, so that the combined lumber is obtained. Compared with the prior art, the invention has the following advantages that: the multi-colored, diversified hard lumber or wood sheet with the density of 0.7g/cm<3> to more than 1.0g/cm<3> has imitative natural wood grains or unique colorful grains, and can be applied to furniture, door frames, staircases and square columns, and the sliced or sawed sheet can be combined with other base materials, such as cabinet panels, tabletops, drawers, floorboards and the line, in order to increase the additional value.

Description

technical field [0001] The invention relates to a wood and a wood processing technology, in particular to an encrypted modified wood and a manufacturing technology thereof. Background technique [0002] At present, the world's forest area is about 3.86 billion hectares, of which coniferous forest accounts for 1 / 3 of the total area, and broad-leaved forest accounts for 2 / 3 of the total area. With the continuous increase of the world population, forest resources are decreasing day by day. Reduced by 11.3 million hectares. Due to the decreasing forest coverage and the scarcity of high-quality wood, it is difficult to meet people's needs. In addition to restricting natural forest logging, artificially plant fast-growing forests and replace natural forests with them. Light, low density, poor texture, and insufficient hardness are greatly restricted in the application of furniture and ground materials, so that artificially planted tree species basically stay in low-value-added app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27D1/00B27M1/08
Inventor 车炳雷
Owner SINO FOREST CHINA INVESTMENTS LTD
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