Small wood integrated shaving thin-wood manufacture method and leveling drying device thereof

A manufacturing method and technology of small-diameter wood, which is applied in the manufacture of thin wood chips, impregnated wood, and tool manufacturing. It can solve the problems of easy deformation and warping, restrictions on the use range of plantation wood, and large growth stress, so as to reduce cutting. The effect of reducing resistance, saving heat energy consumption, and simplifying the process

Inactive Publication Date: 2009-04-29
BEIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a fundamental difference between plantation wood and natural forest wood. Plantation wood generally has small diameter grades, high inclusions, and larger microfibril angles than natural forest wood. Most of the sawn boards have pith cores. Or close to the pith center, the growth stress is large, easy to deform and warp, the material is relatively soft, etc., and cannot be directly used as high-grade materials such as furniture and interior decoration, which restricts the use range of plantation wood and affects its economic value
In particular, small-diameter wood, tending wood, low-quality wood, or short wood produced during harvesting and processing have not been efficiently utilized for a long time, and there have been no successful reports of using them to make sliced ​​veneer

Method used

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  • Small wood integrated shaving thin-wood manufacture method and leveling drying device thereof
  • Small wood integrated shaving thin-wood manufacture method and leveling drying device thereof
  • Small wood integrated shaving thin-wood manufacture method and leveling drying device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1: Continuous high-temperature ironing, leveling and drying machine dedicated to the present invention

[0044] Referring to Figure 2, this continuous high-temperature ironing and leveling dryer includes a frame (omitted from the figure), an oil medium heating and circulation device 1, a pressure and gap adjustment device 2, a front rolling table 3, and a rear rolling table 4, A long annular upper steel belt 7 and a lower steel belt 8 driven by the tension roller 5 and the driving roller 6 are arranged up and down between the front rolling table and the rear rolling table. Two upper hot plates 9 arranged in front and back are arranged on the top of the lower part of the upper steel belt, and two lower hot plates 10 arranged in front and rear are arranged under the upper part of the lower steel belt; There are heating pipes 11 respectively, and several rolling rollers 12 protruding from the surfaces of the upper and lower hot plates are embedded in the lower part...

Embodiment 2—4

[0047] Embodiment 2-4: the preparation of composite reagent used in the present invention

[0048] The weight ratio (unit: kilogram) of each embodiment raw material is shown in Table 1.

[0049] The preparation method is: (taking Example 3 as an example, the preparation method is basically the same as Example 3 except that the raw material consumption is different in other embodiments)

[0050] After adding 15 kilograms of ammonium sulfite, 5 kilograms of ammonium bisulfite and 5 kilograms of urea to 175 kilograms of water, adjust the pH to 8 with ammonia water.

[0051] Table 1

[0052] Example 2 3 4 Ammonium sulfite 13 15 16 Ammonium bisulfite 4 5 6 Urea 6 5 4 water

Embodiment 5—7

[0053] Embodiment 5-7: the preparation of the moisture-curable adhesive used in the present invention

[0054] The weight ratio (unit: kilogram) of each embodiment raw material is shown in Table 2.

[0055] The preparation method is: (taking Example 6 as an example, the preparation method is basically the same as Example 6 except that the raw material consumption is different in other embodiments)

[0056] (1) 388.2 kilograms of polyethylene glycol 600 were heated and melted at a temperature of 55°C, and then 30.2 kilograms of triethylene glycol (n=150) and 10.9 kilograms of ethylene glycol (n=62) were added and mixed Stir evenly to obtain a polyethylene glycol mixture;

[0057] (2) the vitriol oil of 4.5 kilograms is added in the butanone of 495 kilograms, must add the butanone solution of vitriol oil;

[0058] (3) drop the polyethylene glycol mixed solution into the reactor, first drop into 80% of the methyl ethyl ketone solution that is added with concentrated sulfuric ac...

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PUM

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Abstract

The invention relates to a manufacturing method of small-diameter wood glulam slicing veneers and a leveling drying device. Small-diameter wood, tended wood, inferior wood or cordwood produced in the cutting and manufacturing process, and the like which are not easily efficiently used are softened by a composite agent by being infused with pressure, and then after flitches are integrated by finger joining and obliquely slotting the wood with a moisture-curable type adhesive, the flitches are sliced into wet veneers, and the wet veneers are then sent to a special continuous high-temperature ironing leveling dryer to be leveled and dried into sliced veneers in the clamping of upper and lower steel belts. The invention integrates a series of special technologies and transforms small-diameter wood which is not easily used into sliced veneers which meet requirements of various technical specifications with very wide application ranges. Low-grade wood is fully used, which improves the added value of products and comprehensive utilization efficiency of forest resources. The invention has the advantages of simple and reasonable technique method, low equipment cost, good product quality, broad development prospects and the like. Significant social and economic benefits can be produced after the implementation.

Description

technical field [0001] The invention relates to the improvement of a method and equipment for manufacturing veneer, in particular to a manufacturing method for slicing veneer with small-diameter wood lamellae and a leveling and drying equipment thereof, belonging to the field of wood processing. Background technique [0002] The flake-like material produced by slicing and processing is called "natural veneer" using logs of large-diameter high-quality precious tree species as raw materials. After the fast-growing large-diameter logs are peeled or sliced ​​into veneers, after certain processing, they are glued into wooden squares, and then sliced ​​into veneers of various colors and textures, which are called "artificial veneers". [0003] Since the 1960s, research on artificial veneer has begun abroad. By the mid-1980s, my country also used a large number of plywood with artificial veneer veneer purchased from Japan, Hong Kong and other places for interior decoration, and man...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27L5/00B27K3/08B27K3/52B27L5/08
Inventor 刘彦龙刘学艳唐朝发王举伟
Owner BEIHUA UNIV
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