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A method for producing formaldehyde-free technological veneer for veneer solid wood multi-layer board assembly

A technical veneer and production method technology, which is applied in the jointing of wooden veneers, wood heating, wood treatment, etc., can solve the problems of environmental protection, high formaldehyde content, large glue consumption, etc., and achieve good pressing effect and flexibility Good performance and less sizing effect

Active Publication Date: 2022-04-26
小森新材料科技有限公司
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  • 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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  • A method for producing formaldehyde-free technological veneer for veneer solid wood multi-layer board assembly
  • A method for producing formaldehyde-free technological veneer for veneer solid wood multi-layer board assembly
  • A method for producing formaldehyde-free technological veneer for veneer solid wood multi-layer board assembly

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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; afte...

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 present invention relates to a kind of formaldehyde-free technology veneer production method that is used for veneer assembly of multi-layer solid wood board, which comprises the following steps in sequence: (1) drying and repairing the wet veneer of economical fast-growing wood; (2) After treatment, wet veneer of economical fast-growing wood is assembled and coated with formaldehyde-free glue and cold-pressed into a slab; (3) The slab is kept under pressure and heated by high-frequency microwave; (4) Primary curing; (5) Secondary curing ; (6) Milling and deburring, sliced ​​into formaldehyde-free technology veneer. This invention overcomes the shortcomings of the existing small-diameter wood and thin-diameter wood that can only be used to make particleboards, consumes a large amount of glue, and is not environmentally friendly. It cooperates with the optimal type of formaldehyde-free glue, the optimal amount of glue, and the optimized embryonic production process. , realized the use of small-diameter wood and small-diameter wood to produce formaldehyde-free technology veneer with good performance. The 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. occur.

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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Patent Type & Authority Patents(China)
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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