Three-layer thick-core plywood and manufacturing method thereof

A technology for plywood and core board, which is applied in the direction of wood layered products, chemical instruments and methods, adhesives, etc., can solve the problems of high raw material cost of formaldehyde content, the bonding strength needs to be improved, etc., so as to improve the flame retardant performance and the open time of the board. , The preparation process and preparation equipment are simple and feasible, and the gluing performance and stability are good.

Active Publication Date: 2016-05-25
SHANDONG XUANJIN MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, epoxy resin adhesives and phenolic resin adhesives are mostly used. The above-mentioned adhesives have good stability, but the formaldehyde content and raw material costs are high, and the adhesive strength needs to be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of three-layer thick core plywood, which is respectively a face plate, a core board and a bottom board from top to bottom, and they are formed by hot pressing with adhesive; Pressed;

[0018] The adhesive is prepared according to the following process:

[0019] 1) Weigh 1 part of potassium methyl silicate, 2 parts of sodium lauryl sulfate, 2 parts of zinc stearate, 3 parts of boric acid, 3 parts of montmorillonite, 3 parts of lithium bentonite, and 5 parts of silica gel powder according to parts by weight 5 parts of rice straw, 6 parts of borax, 20 parts of starch ether, 30 parts of polyvinyl alcohol, 50 parts of methyl acrylate, 60 parts of ethyl acrylate, and 500 parts of distilled water;

[0020] 2) Pulverize the rice straw with a pulverizer, and then grind it into a powder with a particle size of 200 mesh;

[0021] 3) Add montmorillonite, lithium-based bentonite and borax to the ball mill in turn, grind to a mixture with a particle size of 200 mesh, then tr...

Embodiment 2

[0026] A kind of three-layer thick core plywood, which is respectively a face plate, a core board and a bottom board from top to bottom, and they are formed by hot pressing with adhesive; It is characterized in that the adhesive is prepared according to the following process:

[0027] 1) Weigh 2 parts of potassium methyl silicate, 3 parts of sodium lauryl sulfate, 3 parts of zinc stearate, 5 parts of boric acid, 5 parts of montmorillonite, 5 parts of lithium-based bentonite, and 7 parts of silica gel powder according to parts by weight. 7 parts of rice straw, 9 parts of borax, 30 parts of starch ether, 40 parts of polyvinyl alcohol, 70 parts of methyl acrylate, 80 parts of ethyl acrylate, and 800 parts of distilled water;

[0028] 2) Pulverize the rice straw with a pulverizer, and then grind it into a powder with a particle size of 200 mesh;

[0029] 3) Add montmorillonite, lithium-based bentonite and borax to the ball mill in turn, grind to a mixture with a particle size of ...

Embodiment 3

[0034] The performance parameter test of adhesive of the present invention:

[0035] With reference to GB / T9846.3-2004 and GB / T14074-2006 standard testing, taking Example 1 as an example, the specific testing results are shown in Table 1:

[0036] Table 1

[0037] performance parameter parameter standard Embodiment 1 of the present invention Specific gravity, g / ml 1.05-1.3 1.13 Formaldehyde emission, mg / L 0.5（E0） ＜0.03 Bonding strength, Mpa ＞0.5 1.67 stability, days ＞30 120 Plate opening time, h ＞4h 8h

[0038] Conclusion: The adhesive prepared by the invention is environmentally friendly and pollution-free, has strong bonding strength, good stability, and long board opening time, and is suitable for plywood processing.

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Abstract

The invention belongs to the field of interior decoration plates and discloses a three-layer thick-core plywood which sequentially comprises a face plate, a core plate and a bottom plate from top to bottom, wherein the panel, the core plate and the bottom plate are hot-pressed by virtue of adhesives; the core plate is formed by hot-pressing three intermediate plates by virtue of adhesives. The plywood is of a three-layer thick-core structure, and the stable environment-friendly adhesives are adopted among the three layers, so that environment pollution is avoided, and the performance and market competitiveness of the plywood are improved.

Description

technical field [0001] The invention belongs to the field of interior decoration boards, and in particular relates to a three-layer thick-core plywood and a manufacturing method thereof. Background technique [0002] Plywood is a three-layer or multi-layer board material made of wood segments that are peeled into veneers or sliced ​​into thin wood, and then glued with adhesives. Usually, odd-numbered layers of veneers are used, and adjacent layers are The fiber directions of the veneers are glued perpendicular to each other. Plywood is one of the commonly used materials for furniture, and it is one of the three major boards of wood-based panels. It can also be used for aircraft, ships, trains, automobiles, buildings and packaging boxes. A group of veneers are usually assembled and glued together according to the direction of the wood grain of adjacent layers perpendicular to each other. Usually, the surface board and inner layer board are symmetrically arranged on both si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J151/02C09J11/08C09J11/06C09J11/04C08F251/00C08F220/14C08F220/18B32B21/13B32B21/14B32B7/12
CPCB32B7/12B32B21/13B32B21/14B32B2307/3065B32B2307/7145B32B2307/7265B32B2479/00C08F251/00C08K2201/014C08L2201/02C09J11/04C09J11/06C09J11/08C09J151/02C08L97/02C08K13/02C08K3/346C08K2003/387C08K5/098C08F220/18
Inventor 朱景振陈亮何晖吴昊朱强
Owner SHANDONG XUANJIN MACHINERY CO LTD
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