High-performance wood restructuring laminated wood and manufacturing method thereof

A manufacturing method and high-performance technology, applied in the field of wood processing, can solve the problems of complicated processing technology, damaged wood structure, and reduced product performance, and achieve the effect of good decorative performance, strong wood feeling and product quality improvement.

Inactive Publication Date: 2009-11-18
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because these products need to crush or grind the skin, the original wooden structure of the skin is destroyed, so the finished products are mostly low-value-added products with high energy consumption, low strength and low performance, and the product structure is loose And the texture is soft, and the recovery of its woody feeling depends on another secondary processing and decoration treatment.
Not only the perfor

Method used

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  • High-performance wood restructuring laminated wood and manufacturing method thereof
  • High-performance wood restructuring laminated wood and manufacturing method thereof
  • High-performance wood restructuring laminated wood and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0050] First select the residue in the sawing process of Chinese fir wood - fir bark as a raw material, and saw it into side strips with a width of 5-20mm and a length of 10-50cm. Then, the fir edge strips with bark are rolled and loosened to separate the bark from the wood edge strips, and put into a drying oven to dry the edge strips to a moisture content of 6%-12%. The third step is to immerse the dried wood edge strips in the modified phenolic resin glue with a solid content of 20%. %the following. The fourth step is to evenly spread the dipped and dried wood edge strips in a concave groove to form a slab, and then push the blank into a mold placed on a hot press for hot pressing, and press according to the following hot pressing process parameters : Hot-pressing temperature 120-160°C; hot-pressing pressure 2-7MPa (adjusted according to the density of the product); hot-pressing time, 1-3 minutes per mm plate thickness, that is, 1-3min / mm, to form a square material. After...

Embodiment 2

[0052] Select the discarded broken veneers produced in the production of plywood, remove the broken veneers with a length less than 5cm, and cut the veneer strips with a length greater than 50cm and a width greater than 20mm into side strips with a width of 5-20mm and a length of 10-50cm. Then, according to the production conditions of Example 1, the selected edge strips are dipped, dried, paved, hot-pressed and finished to form a finished board and square material. If the density is 0.8g / cm 3 1. For a plate with a thickness of 20mm, the elastic modulus is 24730MPa, the static bending strength is 121MPa, and the boiling internal bonding strength is 0.35MPa.

Embodiment 3

[0054] The sawed slats produced in the production of finger-jointed integrated boards are selected without other treatment, and the finished boards and squares are formed by dipping, drying, paving, hot pressing and post-finishing directly according to the production conditions of Example 1 . If the density is 1.0g / cm 3 1. A plate with a thickness of 25mm has an elastic modulus of 28650MPa and a static bending strength of 167MPa.

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Abstract

The invention discloses a high-performance wood restructuring laminated wood and a manufacturing method thereof. Massive remainders, namely wood slabs, produced in wood processing are taken as raw materials to manufacture high-density high-strength laminated boards and squared timbers used for structure and decoration by wood restructuring technology; wherein the waste remainders of the wood processing are sawed, discongested and peeled and dried to form edgings with certain specifications; then the edgings are levelly paved in multilayer, and heat pressing and post treatment are carried out to manufacture laminated boards and squared timbers. The processing technological processes are as follows: sawing the remainders, namely the wood slabs of the wood processing to be edgings with certain width and length, discongesting and peeling, and drying to certain moisture content; carrying out gumming and secondary drying on the dried edgings, then paving the edgings in a concave groove to form blanks; then pushing the blanks in the concave groove to a die on a thermocompressor for heat pressing, forming blank flat squared timbers, and then trimming and sanding to manufacture the finished product.

Description

technical field [0001] The invention belongs to the technical field of wood processing, and in particular relates to a product and its manufacturing technology which utilizes the waste residues of wood processing (mainly solid wood, such as the processing of logs, boards, etc.) to turn them into high-performance solid wood through recombination technology . Background technique [0002] The wood processing industry is one of the pillar industries of my country's national economy. Sawn timber products in the wood processing industry are widely used in my country, and its application fields involve construction, furniture, packaging, transportation, machinery manufacturing and other aspects. At the same time, however, a large amount of residual waste - wood shavings - is produced in wood processing. In the past, these residues were mostly used for processing fiberboard, particleboard and other products. However, because these products need to crush or grind the skin, the or...

Claims

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Application Information

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IPC IPC(8): B27N3/02B27N1/00B27N1/02B27N3/08B27N3/14B27N3/18B27L1/00
Inventor 王正任一萍高黎郭文静常亮范留芬徐正东
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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