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A method for strengthening the surface of poplar board

A board and surface technology, applied in the field of poplar board surface strengthening, can solve problems such as waste and uncontrollable compression, and achieve the effects of saving resources, high dimensional stability, and high yield.

Inactive Publication Date: 2017-01-11
NORTHWEST A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There is an existing technology for compressing and strengthening wood, but its compression compresses the entire thickness of the board, and it is uncontrollable to compress only the surface layer of 2-3mm. For general-purpose boards, the overall compression is a great waste

Method used

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  • A method for strengthening the surface of poplar board

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Embodiment 1

[0029] A method for strengthening the surface of a poplar board, specifically comprising the following steps: (1) board preparation; (2) planing the surface; (3) softening the surface; (4) compressing the surface; (5) stabilizing treatment. Firstly, the poplar logs are sawed into boards of a certain thickness according to the needs, and the surface layer is softened after planing. The softened boards are quickly loaded into a press for surface compression. The compression-molded boards are ready after stabilization. Can.

[0030] In above-mentioned steps, softening treatment step is:

[0031] (1a) Saw poplar plank, thickness 30mm, select the plank (preferably string-cut wood) and dry to 15% moisture content, double-sided planing with fixed thickness, planed board thickness is 22mm (finished board thickness 18mm). Then cut the length and width of the plate according to the width of the hot press, and remove defects (knots, insect eyes, decay, etc.) at the same time.

[0032] ...

Embodiment 2

[0043] A method for strengthening the surface of a poplar board, specifically comprising the following steps: (1) board preparation; (2) planing the surface; (3) softening the surface; (4) compressing the surface; (5) stabilizing treatment. Firstly, the poplar logs are sawed into boards of a certain thickness according to the needs, and the surface layer is softened after planing. The softened boards are quickly loaded into a press for surface compression. The compression-molded boards are ready after stabilization. Can.

[0044] In above-mentioned steps, softening treatment step is:

[0045] (1a) Saw poplar boards with a thickness of 25mm, select the boards and dry them to a moisture content of 20%, and plan on both sides with a fixed thickness. The thickness of the planed boards is 19mm (the thickness of the finished board is 15mm). Then cut the length and width of the plate according to the width of the hot press, and remove defects (knots, insect eyes, decay, etc.) at the...

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Abstract

The invention relates to a poplar sheet material surface layer reinforcement method and belongs to the technical field of sheet material reinforcement. The poplar sheet material surface layer reinforcement method comprises the following steps of 1, sheet material preparation, 2, surface polishing, 3, surface layer softening, 4, surface layer compression and 5, stabilization treatment. Raw poplar is divided into sheet materials having a certain thickness by sawing, the sheet materials are subjected to surface polishing, the sheet materials subjected to surface polishing are subjected to softening treatment, the softened sheet materials are fast put into a compressor, the sheet materials are subjected to surface layer compression, and the compression-molded sheet materials are subjected to stabilization treatment. The poplar sheet material surface layer reinforcement method has the advantages that 1, only a surface layer having the thickness of 2-3mm is compressed, a sheet material yield is high, and resources are saved, 2, optimal properties are obtained in shortest time by a lowest cost, and 3, the poplar sheet material surface layer reinforcement method opens a novel approach for poplar value-added application and high-efficiency utilization.

Description

technical field [0001] The invention relates to a method for strengthening the surface layer of a poplar board, which belongs to the technical field of board strengthening. Background technique [0002] Poplar is the most widely planted plantation tree species in my country, with fast growth, high output and short harvesting cycle. However, poplar wood in plantation is soft, low in hardness and poor in dimensional stability, so it cannot be directly used as flooring, furniture structural parts or important In some cases, it is difficult to increase the added value of the product. Studies have shown that the physical and mechanical properties of wood are positively correlated with the density of wood. During the use of wooden boards, the main force is bending and shearing stress, and the maximum stress generally occurs at the surface of the wood. [0003] This technology compresses and strengthens the surface layer of 2-3 mm of fast-growing industrial forest poplar boards, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27M1/08B27M1/02B27K5/00B27K5/06
Inventor 杨庆雷亚芳肖建平邱增处郭惠萍刘建理
Owner NORTHWEST A & F UNIV
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