Process for manufacturing dry degreased veneer by one-step low-temperature dewatering and degreasing

A low-temperature dehydration and thin wood board technology, which is applied in the manufacture of tools, wood processing equipment, wood treatment, etc., can solve the problems of large weather influence, large floor area, and high wood board loss, and achieve low cost, save processing space, and high efficiency Effect

Inactive Publication Date: 2013-03-06
陈智存 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that during the drying process of veneer boards, there are disadvantages such as large floor area, large influence by weather, large amount of labor, and high board loss. High-quality veneer processing technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1: one-time low-temperature dehydration and degreasing to make dry degreasing veneer process, comprising the following steps: a. using wet veneer as raw material, directly feeding the raw material into the extraction tank, sealing the extraction tank, and evacuating to -0.09MPa Take out the air in the extraction tank; b. Inject methyl ether into the extraction tank for soaking and extraction, the weight ratio of methyl ether to wet veneer is 1~1.2:1, the extraction temperature is 30~50 degrees, after soaking for 20~40 minutes After the extraction, the methyl ether is pumped out of the extraction tank; c. After repeating step b for 2 to 4 times, the methyl ether in the extraction tank is removed by vacuum, and finally the raw materials are taken out of the extraction tank to obtain dehydrated, degreased and dried thin film board.

[0011] Advantages: 1. The wet veneer is directly loaded into the extraction tank, under the extraction of methyl ether solvent, th...

Embodiment 2

[0012] Embodiment 2: One-time low-temperature dehydration and degreasing to make dry degreasing veneer technology, a. Get wet veneer 1Kg, directly transport in the extraction tank, then the extraction tank is closed, vacuumize to -0.09MPa to extract the air in the extraction tank Drop; b. Inject methyl ether into the extraction tank for soaking and extraction, the weight ratio of methyl ether to wood board is 1:1, the extraction temperature is 50 degrees, after soaking for 20 to 30 minutes, the extract is pumped out of the extraction tank, c. Inject 1Kg of methyl ether into the extraction tank again for 20-30 minutes of soaking and extraction. The extraction temperature is 50 degrees. After repeating step b 3 times, the methyl ether in the extraction tank is removed by vacuum, and finally the dehydrated and degreased wet thin The planks are discharged from the extraction tank to obtain dehydrated and degreased dry veneers.

Embodiment 3

[0013] Example 3: One-time low-temperature dehydration and degreasing process to prepare dry degreasing veneer, the weight ratio of methyl ether to wet veneer is 1.1:1, the extraction temperature is 38 degrees, and after soaking for 30-35 minutes. Other steps are with embodiment 2.

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PUM

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Abstract

A process for manufacturing a dry degreased veneer by one-step low-temperature dewatering and degreasing includes the steps of a, directly conveying a wet veneer into an extraction tank, closing the extraction tank and performing vacuuming to -0.09 Mpa to extract air in the extraction tank; b, injecting dimethyl ether into the extraction tank for soaking and extracting, and extracting dimethyl ether out of the extraction tank after soaking and extracting for 20-40 minutes, wherein weight ratio of dimethyl ether to the wet veneer is 1-1.2:1 and extraction temperature is 30-50 DEG C; and c, repeating the step b for two to four times, extracting dimethyl ether in the extraction tank in vacuum, and finally taking out the wet veneer from the extraction tank to obtain a dewatered degreased dry veneer. The process for manufacturing the dry degreased veneer is simple, quick, high in efficiency, low in cost and free of pollutants in production process and has promising development prospect.

Description

technical field [0001] The invention belongs to a process of dehydrating and degreasing a wet veneer used for making plywood raw materials in a one-time low-temperature state to obtain a dry degreasing veneer. Background technique [0002] The veneer is a kind of material that uses round wood as raw material, which is made by rotary cutting and drying, and is used to make multi-ply wood. There are disadvantages such as large quantity and high loss of planks. Contents of the invention [0003] The technical problem to be solved by the present invention is that during the drying process of veneer boards, there are disadvantages such as large floor area, large influence by weather, large amount of labor, and high board loss. High-quality veneer processing technology. [0004] In order to solve the above-mentioned technical problems, the following technical solutions are adopted: the dry degreasing veneer process is obtained by one-time low-temperature dehydration and degrea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K5/04
Inventor 朱新亮
Owner 陈智存
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