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Improved type fine carpentry wood core plate and making method

A blockboard and core board technology, which is applied to wood processing equipment, flat products, manufacturing tools, etc., can solve the problems of low production efficiency, large dry shrinkage rate, and low utilization rate of raw materials

Inactive Publication Date: 2003-04-16
ZHEJIANG FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. Low yield rate
Small-diameter fir wood and logs are used to make core strips. Due to sawing and planing, the utilization rate of raw materials is low, and the yield rate is less than 45%, which is a serious waste of resources. Especially when using small-diameter timber to directly produce core strips, the yield rate is even lower.
[0006] 2. Use small-diameter wood to directly manufacture core strips. Due to the immature properties of young wood, large dry shrinkage, easy deformation, and low strength, it is difficult to guarantee the dimensional tolerance and shape tolerance of processing, thus affecting the intrinsic quality of the finished blockboard.
[0007] 3. The manufacturing process of the blockboard core board has to go through multiple sawing, planing and other processes. The production process is more complicated and the production efficiency is low.

Method used

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  • Improved type fine carpentry wood core plate and making method
  • Improved type fine carpentry wood core plate and making method
  • Improved type fine carpentry wood core plate and making method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] (1) Raw material preparation

[0015] Peel the freshly cut or undried small-diameter wood, thinned wood, and branch wood. If the raw material is too dry, it needs to undergo pretreatment such as water immersion or steaming to adjust its moisture content to ≥30%;

[0016] (2) Rolling combing and longitudinal separation

[0017] Put the above-mentioned wood section into a rolling roller for proper rolling, so that it is split and preliminarily separated into larger pieces and a network structure that adheres to each other but does not separate. The preliminarily separated net-like structure is then combed with a combing device. The teeth of the combing knife (referred to as comb teeth, the same below) are combed along the grain (or inverted), and the direction of movement of the comb teeth is basically the same as that of the wood fiber. Consistent, use comb teeth to comb the mesh body to force the adhesion part to separate, and at the same time to subdivide the thicker piece...

Embodiment 2

[0038] The new blockboard core board produced by the method described in Example 1 is used as the core layer (3), and ordinary veneers are used as the watch board (1) and the short core board (2). After that, a new type of blockboard can be produced.

[0039] Compared with the ordinary blockboard core board production process, the invention has the advantages of high production efficiency, low energy consumption, high wood utilization rate, low production cost, good quality, and greater social and economic benefits.

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Abstract

A core board of veneered strip-glued board is made up of the small-diameter raw material, thinning out tree, or branch through preparing raw material, rolling, longitudinal separation, transverse cutting, drying, applying glue, spreading and hot pressing. Its advantages are high productivity and utilization rate of wood, low cost and high quality.

Description

1. Technical Field [0001] The invention belongs to the technical field of wood-based panel manufacturing in the wood processing industry. 2. Background technology [0002] The blockboard core board in the existing blockboard manufacturing technology is formed by splicing wooden strips, and the wooden strips are sawn from logs, short side trims, and rotary cut wood cores. Low-density tree species such as coniferous or soft broad-leaved wood are mostly used for wood species. Pine, fir, poplar, paulownia, etc. are commonly used. The same wood species is used for the same blockboard core board. [0003] The manufacture of blockboard core boards is divided into two types: core strip lateral glued and non-glued. After the side-spliced ​​core board is sanded or planed at a fixed thickness, the tolerance is small and the surface flatness is good, which can improve the blockboard. The quality of the core board is not side-to-side. It has strict requirements on the processing accuracy of t...

Claims

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Application Information

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IPC IPC(8): B27D1/06B27N3/14
Inventor 张齐生刘志坤杜春贵张宏楼永生门全胜
Owner ZHEJIANG FORESTRY UNIVERSITY
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