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Fabrication technique of combined lumber

A kind of manufacturing process, wood square technology, applied in the manufacturing process of encrypted modified wood, can solve the problems of insufficient glue strength, seldom used, unable to produce imitation natural texture, etc., and achieve the effect of increasing added value

Inactive Publication Date: 2013-06-05
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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  • Fabrication technique of combined lumber
  • Fabrication technique of combined lumber
  • Fabrication technique of combined lumber

Examples

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Effect test

example 1

[0048] Example 1: Using Guangdong artificial fast-growing eucalyptus, its density is 0.5g / cm 3 , Using this process to peel into wood chips 1.2mm thick, 360mm wide and 2500mm long, put the wood chips into a pressurized dyeing pot, and then suck the pre-heated dyeing solution by vacuum, heat and start the cycle to make the solution even, at 105℃ ,Pressure 0.4Mp, keep it for 60 minutes to stop dyeing, cool down and take it out, use a drum dryer to dry to moisture content below 12%, then apply phenolic resin glue on one side, the amount of glue is 160 grams per square meter, then place Assemble the blanks on the double-arc mold, and use wood chips of different colors to produce color patterns. In this example, there are two natural colors, one red, two natural colors, one blue, and two natural colors and one green. When the height reaches 200mm, place a 0.3mm copper sheet as the anode, and then press two sheets of natural color, one red, two natural colors, one blue, and two natura...

example 2

[0049] Example 2: The density of artificial fast-growing Nelumbo nucifera is 0.45g / cm 3 , Using this process to peel into wood chips 0.8mm thick, 360mm wide and 2500mm long, put the wood chips into a pressurized dyeing pot, hold at 103℃, pressure 0.3Mp, and hold for 60 minutes to stop dyeing. After cooling down and pressing, take it out and use a roller. The dryer is dried to a moisture content of less than 12% and placed in a pressure tank for encryption. In this example, phenolic resin is used as the encryption agent. The tank pressure equipment uses a pressure tank with the function of flexing solvent. Hold 1.0Mp for 90 minutes to release the pressure and take it out. When the wood chips are taken out after the immersion is completed, use 6 compressed air to blow off the surface glue on both sides of the wood chips. Figure 4 In the process, the blown surface glue will flow back into the tank or tank to reduce waste and facilitate subsequent process operations. The dipped wood...

example 3

[0050] Example 3: Use artificial fast-growing poplar with a density of 0.3g / cm 3 , Using this process to peel into wood chips 1.5mm thick, 360mm wide and 2500mm long, put the wood chips into a pressurized dyeing pot, hold at 101℃, pressure 0.35Mp, and hold for 60 minutes to stop dyeing, cool down and uncompress, take it out, use a roller The dryer is dried to a moisture content of less than 12% and then put into a pressure tank for encryption. In this example, phenolic resin is used as the encryption agent. The tank pressure equipment uses a pressure tank with a flexible solvent function (similar to a dyeing pressure vessel). The encrypting agent is then pressurized to 0.8Mp and held for 60 minutes to remove the pressure. When the wood chips are taken out after the immersion is completed, use the tubular compressed air 6 to blow off the surface glue on both sides of the wood chips (such as Figure 4 (Shown), the blown off surface glue will flow back into the tank or tank to reduc...

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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 processing technology, in particular to a manufacturing technology of encrypted modified wood. Background technique [0002] At present, the world's forest area is about 3.86 billion hectares, of which coniferous forests account for 1 / 3 of the total area, and broad-leaved forests account for 2 / 3 of the total area. As the world population continues to increase, forest resources are declining. A reduction of 11.3 million hectares. Due to the decreasing forest coverage and the scarcity of high-quality wood, it has been difficult to meet people’s needs. In addition to restricting natural forest logging, artificially planted fast-growing forests and replaced natural forests with them. Most of the materials of artificially planted trees Lightness, low density, poor texture, and insufficient hardness. The application of furniture and floor materials is greatly restricted, so that artificially planted tree species basically stay in l...

Claims

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Application Information

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