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Production method of aldehyde-free technical wood veneer used for veneer solid wood multilayer board assembly

A technical veneer and production method technology, which is applied in the jointing of wooden veneers, wood treatment, wood heating, etc., can solve the problems of non-compliance with environmental protection, large glue consumption, and high formaldehyde content.

Active Publication Date: 2020-10-27
小森新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the disadvantages that the existing small-diameter wood and thin-diameter wood can only be used to make particle boards, and the amount of glue used is large, resulting in high formaldehyde content and not meeting the requirements of environmental protection, the present invention provides a solid wood multi-layer board assembly for veneering. The formaldehyde-free technical veneer production method of the billet, through the cooperation of the preferred type of formaldehyde-free glue, the preferred sizing amount and the optimized billet production process (including the preferred splicing method, and the use of cold pressing process and pressure holding process), has realized The purpose of using small-diameter wood and small-diameter wood to produce formaldehyde-free technology veneer with good performance. The produced formaldehyde-free technology veneer not only has low content of harmful substances, is green and environmentally friendly, but also can effectively reduce problems such as fried squares, burrs, and cracks during the production process. happened

Method used

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  • Production method of aldehyde-free technical wood veneer used for veneer solid wood multilayer board assembly
  • Production method of aldehyde-free technical wood veneer used for veneer solid wood multilayer board assembly
  • Production method of aldehyde-free technical wood veneer used for veneer solid wood multilayer board assembly

Examples

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Effect test

Embodiment 1

[0047] A kind of formaldehyde-free technological veneer production method that is used for veneer solid wood multi-layer board assembly according to the present invention, it comprises the following steps carried out in sequence:

[0048] (1) drying the wet veneer of economical fast-growing wood to a moisture content of 6%, and then repairing the wet veneer of economical fast-growing wood;

[0049] (2) Under the environment of ≥ 5°C, arrange and splice the wet veneers of the economical fast-growing wood after the treatment in step (1) into single-layer veneers with all horizontal grains, and assemble the single-layer veneers with horizontal grains The blanks are stacked, and the lines of all single-layer veneers are extended in the same direction. During the stacking process, formaldehyde-free glue is applied between the adjacent two-layer single-layer veneers stacked up and down. Each adjacent two-layer single-layer The amount of glue applied between the veneers is 260g; after ...

Embodiment 2

[0059] A kind of formaldehyde-free technological veneer production method that is used for veneer solid wood multi-layer board assembly according to the present invention, it comprises the following steps carried out in sequence:

[0060] (1) drying the wet veneer of the economical fast-growing timber to a moisture content of 4%, and then repairing the wet veneer of the economical fast-growing timber;

[0061] (2) Under the environment of ≥ 5°C, arrange and splice the wet veneers of the economical fast-growing wood after the treatment in step (1) into single-layer veneers with all horizontal grains, and assemble the single-layer veneers with horizontal grains The blanks are stacked, and the lines of all single-layer veneers are extended in the same direction. During the stacking process, formaldehyde-free glue is applied between the adjacent two-layer single-layer veneers stacked up and down. Each adjacent two-layer single-layer The amount of glue applied between the veneers i...

Embodiment 3

[0071] A kind of formaldehyde-free technological veneer production method that is used for veneer solid wood multi-layer board assembly according to the present invention, it comprises the following steps carried out in sequence:

[0072] (1) drying the wet veneer of the economical fast-growing timber to a moisture content of 8%, and then repairing the wet veneer of the economical fast-growing timber;

[0073] (2) Under the environment of ≥ 5°C, arrange and splice the wet veneers of the economical fast-growing wood after the treatment in step (1) into single-layer veneers with all horizontal grains, and assemble the single-layer veneers with horizontal grains The blanks are stacked, and the lines of all single-layer veneers are extended in the same direction. During the stacking process, formaldehyde-free glue is applied between the adjacent two-layer single-layer veneers stacked up and down. Each adjacent two-layer single-layer The amount of glue applied between the veneers i...

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Abstract

The invention relates to a production method of an aldehyde-free technical wood veneer used for a veneer solid wood multilayer board assembly. The production method sequentially comprises the steps of(1) drying and repairing an economical fast-growing wood wet veneer; (2) assembling the processed economical fast-growing wood wet veneer, coating aldehyde-free glue, and carrying out cold pressing to form a board blank; (3) carrying out pressure maintaining and high-frequency microwave heating on the board blank; (4) carrying out primary maintenance; (5) carrying out secondary maintenance; and (6) milling the board blank to remove burrs, and planing and cutting the board blank into the aldehyde-free technical wood veneer. According to the production method, the defects that existing small-diameter wood and thin-diameter wood can only be used for manufacturing shaving boards, and the use amount of glue is large, so that the shaving boards are not environmentally friendly are overcome; through the cooperation of the aldehyde-free glue of the optimized type, the optimized glue amount and the optimized assembly production process, the aldehyde-free technical wood veneer with good performance can be produced by using the small-diameter wood and the thin-diameter wood; and not only is the aldehyde-free technical wood veneer low in harmful substance content and environmentally friendly,but also the problems of breakage, burrs, cracks and the like in the production process can be effectively reduced.

Description

technical field [0001] The invention relates to a method for producing a formaldehyde-free technical veneer for the assembly of veneer solid wood multi-layer boards, and is particularly applicable to the production field of technical veneer using small-diameter economical fast-growing wood veneer as a raw material. Background technique [0002] Economical fast-growing timber such as poplar, fir, eucalyptus, etc., can be used as billet materials, and technological veneers are produced through a new technological veneer billet assembly process. The diameter range of the small-diameter wood of conventional economic fast-growing timber is 20-28cm, and the diameter range of thin-diameter wood is below 18cm. After crushing, add a lot of glue to make particleboard. The economical fast-growing timber with smaller diameter and larger diameter is used in the production of technical wood, and formaldehyde glue is mostly used, and the glue consumption is large, resulting in high formal...

Claims

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Application Information

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IPC IPC(8): B27D1/04B27D1/08B27K5/00
CPCB27D1/08B27D1/04B27K5/001B27K5/0085
Inventor 洪杰施连军常庆华陈昌主郑春李莉
Owner 小森新材料科技有限公司
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