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Correcting and hot pressing drying method of warping wood

A drying method and technology for wood, applied in the direction of wood drying, wood compression, drying of solid materials, etc., to achieve the effect of improving utilization rate, improving utilization rate, and simple principle

Active Publication Date: 2017-06-23
江门健威家具装饰有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art, and to provide a hot-press drying method suitable for restoring straightness of large-format warped plates, which can overcome the defects of drying deformation, reduce processing difficulty, and improve plate utilization.

Method used

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Examples

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Effect test

Embodiment 1

[0027] The invention discloses a warped wood rectification and hot-press drying method, which can overcome the deformation of the wood during drying, restore the straightness of the wood, reduce processing difficulty and improve the production efficiency of the wood.

[0028] In this embodiment, the method provided by the present invention is used to rectify a piece of birch with a dimension of 400mm×400mm×25mm to restore straightness. The maximum warpage of the birch is 0.74%, and the maximum warpage height is 2.9mm. The specific operation Proceed as follows:

[0029] (1) Pre-drying stage: put the warped board into the drying equipment with the parameters of "60°C temperature and 50% humidity", dry for 5 days, and adjust its moisture content to 10%;

[0030](2) Wood correction stage: A. Control the temperature of the low-temperature template of the hot press at 130°C, the temperature of the high-temperature template of the hot press at 150°C, and the pressure at 0.2Pa; B. Put...

Embodiment 2

[0035] The invention discloses a warped wood rectification and hot-press drying method, which can overcome the deformation of the wood during drying, restore the straightness of the wood, reduce processing difficulty and improve the production efficiency of the wood.

[0036] In this embodiment, a piece of hedgehog red sandalwood with a dimension of 500mm×450mm×25mm is used to correct a piece of hedgehog red sandalwood with a size of 500mm×450mm×25mm to make it straight again. The maximum warpage of the hedgehog rosewood is 0.57%, and the maximum warpage height is 2.85mm. The specific operation steps are as follows:

[0037] (1) Pre-drying stage: put the warped board into the drying equipment with the parameters of "temperature 50°C, humidity 55%" and dry for 3 days, and adjust its moisture content to 20%;

[0038] (2) Wood correction stage: A. Control the temperature of the low-temperature template of the hot press at 140°C, the temperature of the high-temperature template of...

Embodiment 3

[0043] The invention discloses a warped wood rectification and hot-press drying method, which can overcome the deformation of the wood during drying, restore the straightness of the wood, reduce processing difficulty and improve the production efficiency of the wood.

[0044] This embodiment adopts the method provided by the present invention to rectify a piece of Guyi pine wood whose size is 500mm×500mm×25mm to restore straightness. The maximum warping degree of this Guyu pine wood is 0.50%, and the maximum warping height is 2mm , the specific operation steps are as follows:

[0045] (1) Pre-drying stage: Put the warped board into the drying equipment with the parameters of "temperature 55°C, humidity 50%" and dry it for 4 days, and adjust its moisture content to 15%;

[0046] (2) Timber correction stage: A. Control the temperature of the low-temperature formwork of the hot press at 135°C, the temperature of the high-temperature formwork of the hot press at 160°C, and control...

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Abstract

The invention discloses a correcting and hot pressing drying method of warping wood. The method specifically comprises following steps: firstly, the water containing rate of the wood is adjusted to range from 10% to 20%, and therefore the shrinkage difference of the inner surface and the outer surface of the wood is controlled; the wood is put into a low-temperature mold plate pressing machine and a high-temperature mold plate pressing machine which have a certain temperature difference to be subject to correcting treatment; the straightened wood is put into a hot pressing machine to be subject to drying and size shaping; the wood is put into a pressing machine to be subject to cooling, and the wood is cooled to 20 to 50 DEG C at the cooling speed of 10 DEG C to 20 DEG C / min; finally, the wood is put in the environment with the temperature ranging from 50 DEG C to 60 DEG C and the relative humidity ranging from 60 % to 80 % to be subject to water containing rate modulation treatment, the final water containing rate of the wood is controlled to range from 6% to 10 %, and finally, the wood recovered to be straight is obtained. The correcting and hot pressing drying method has the beneficial effects of being simple in principle, convenient to operate, capable of effectively overcoming deformation generated in the drying process, high in success rate and high in production efficiency, reducing the machining difficulty, easily achieving batched industrial production and the like.

Description

technical field [0001] The invention relates to the field of wood drying, in particular to a hot-press drying method for correcting deformation of solid wood boards during drying. Background technique [0002] As we all know, solid wood boards are durable and have natural textures, which are the best choice for decoration. However, during the drying process of wood, the moisture content of each layer in the thickness is often unevenly distributed. At the same time, the diameter and chord direction of wood shrinkage vary greatly, which can easily lead to problems such as warping and cracking of wood and affect the processing and utilization of wood. And existing solid wood board also can be out of shape after making, and this has also limited the utilization and the development of solid wood board greatly. [0003] In order to solve the warping caused by the large internal stress and deformation of the solid wood board, the Chinese patent with the publication number CN105965...

Claims

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Application Information

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IPC IPC(8): B27M1/02F26B9/04F26B25/22
CPCB27M1/02F26B9/04F26B25/22F26B2210/16
Inventor 涂登云赵湘玉宋杰胡传双周桥芳
Owner 江门健威家具装饰有限公司
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