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Manufacturing method for full-automatic rapid formaldehyde-free adding and pressing veneer veneer plywood

A manufacturing method and technology of plywood, applied in the jointing of wooden veneers, other plywood/plywood utensils, manufacturing tools, etc., can solve the problems of excessive formaldehyde emission, poor process continuity, and low work efficiency of plywood, and achieve increased The effect of contact area, improving efficiency and saving glue

Active Publication Date: 2022-08-02
崇左广林迪芬新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When the existing plywood is prepared, formaldehyde-containing adhesives are used, so that the formaldehyde emission of the prepared plywood exceeds the standard, which is harmful to human health. At the same time, in the preparation process, the degree of automation is low, requiring a large number of human resources, and the process continuity is poor. The efficiency is low, and the glued strength of the plywood is easy to bulge

Method used

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  • Manufacturing method for full-automatic rapid formaldehyde-free adding and pressing veneer veneer plywood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A fully automatic and fast formaldehyde-free addition and lamination manufacturing method of veneer veneer plywood, comprising the following steps:

[0034] S1. The aldehyde-free added plywood substrate is prepared by continuous hot pressing on the main line, and then maintained for 5 days. After the stress of the aldehyde-free added plywood substrate is released, one-time double-sided sanding and two sets of single-sided sanding are used for fixed-thickness sanding;

[0035] S2. Stack the above-mentioned aldehyde-free added plywood base material and use it as a gluing material, use veneer as a veneer material, and then use a sizing roller to apply isocyanate on the surface of the veneer material, and then paste it on the gluing material in turn. On the material, a veneer blank is formed, wherein the veneer can be any one of mahogany, sapele, ash, birch and beech, and the thickness of the veneer is 0.2mm, the moisture content is 8%, and the density is >0.65 Kg / m 3 ;

...

Embodiment 2

[0042] A fully automatic and fast formaldehyde-free manufacturing method for adding and pressing veneer veneer plywood, comprising the following steps:

[0043] S1. The aldehyde-free added plywood substrate is prepared by continuous hot pressing of the main line, and then maintained for 6 days. After the stress of the aldehyde-free added plywood substrate is released, one-time double-sided sand and two sets of single-sided sanding are used for fixed-thickness sanding;

[0044] S2. Stack the above-mentioned aldehyde-free added plywood base material and use it as a gluing material, use veneer as a veneer material, and then use a sizing roller to apply isocyanate on the surface of the veneer material, and then paste it on the gluing material in turn. On the material, a veneer blank is formed, wherein the veneer can be any one of mahogany, sapele, ash, birch and beech, and the thickness of the veneer is 0.4mm, the moisture content is 10%, and the density is >0.65 Kg / m 3 ;

[004...

Embodiment 3

[0051] A fully automatic and fast formaldehyde-free manufacturing method for adding and pressing veneer veneer plywood, comprising the following steps:

[0052] S1. Prepare the aldehyde-free plywood substrate by continuous hot pressing on the main line, and then keep it for 7 days. After the stress of the aldehyde-free plywood substrate is released, use one double-sided sand and two sets of single-sided sanding for fixed thickness sanding;

[0053] S2. Stack the above-mentioned aldehyde-free added plywood base material and use it as a gluing material, use veneer as a veneer material, and then use a sizing roller to apply isocyanate on the surface of the veneer material, and then paste it on the gluing material in turn. On the material, a veneer blank is formed, wherein the veneer can be any one of mahogany, sapele, ash, birch and beech, and the thickness of the veneer is 0.6mm, the moisture content is 12%, and the density is >0.65 Kg / m 3 ;

[0054] S3. The above-mentioned ve...

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Abstract

The invention discloses a manufacturing method for full-automatic rapid formaldehyde-free adding and pressing veneer veneer plywood, and belongs to the technical field of plate preparation. According to the manufacturing method disclosed by the invention, a full-automatic equipment process technology is adopted and is continuously matched with a veneer veneering process of the main line base material; 40-layer automatic plate feeding and discharging hot pressing and high-temperature rapid curing type pressing pasting are achieved, and the characteristics of high quality, high efficiency and high stability are achieved; the formaldehyde-free addition of the veneer veneer plywood is thoroughly realized by using the formaldehyde-free adhesive while the industrial production can be implemented in the manufacturing mode, the production efficiency is greatly improved and the product quality is ensured, so that the national environmental protection standard is met.

Description

technical field [0001] The invention belongs to the technical field of sheet metal preparation, and in particular relates to a method for manufacturing a fully automatic and rapid aldehyde-free addition and pressing veneer veneer plywood. Background technique [0002] With the continuous development of society, the wood industry has also developed rapidly. As an important wood product in the wood industry, plywood is closely related to people's lives, and its development has always been concerned by people. It is cut into veneer or sliced ​​into veneer from wood, and then glued with adhesive to form a plate-like material, and the fiber directions of adjacent layers of veneer are glued perpendicular to each other. [0003] In view of the serious impact of formaldehyde on human health, the state has made strict regulations on the amount of formaldehyde released from plywood products. GB18580-2001 mandatory standard, since July 1, 2002, the market has stopped selling products ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27D1/04B27D1/06B27D1/08B27D5/00B27G11/00C09J175/04B65G35/00
CPCB27D1/04B27D1/06B27D1/08B27D1/083B27D5/006B27G11/00C09J175/04B65G35/00
Inventor 潘礼成李骜黄强
Owner 崇左广林迪芬新材料科技有限公司
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