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A kind of double-layer straight core plywood and its manufacturing method

A plywood, core-shunting technology, used in adhesives, manufacturing tools, adhesive types, etc., can solve the problems of the need to improve the bonding strength and the high cost of raw materials with formaldehyde content, to improve the flame retardant performance and the opening time of the board, the preparation process And the effect of simple and feasible preparation equipment, improving performance and market competitiveness

Active Publication Date: 2017-09-22
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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  • A kind of double-layer straight core plywood and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A double-layer straight-core plywood, which is composed of a face plate, a core board and a bottom board from top to bottom, which are formed by hot pressing with an adhesive; Pressed, the wood grain direction of the two middle boards is the same; the adhesive is prepared according to the following process:

[0018] 1) Weigh 1 part of potassium methyl silicate, 2 parts of sodium lauryl sulfate, 2 parts of hydroxyethyl cellulose, 3 parts of zinc stearate, 3 parts of boric acid, 3 parts of montmorillonite, lithium 4 parts of base bentonite, 5 parts of silica gel powder, 5 parts of wheat straw, 7 parts of borax, 20 parts of starch ether, 25 parts of polyvinyl alcohol, 50 parts of methyl acrylate, 70 parts of ethyl acrylate, and 600 parts of distilled water;

[0019] 2) Crush the wheat straw with a pulverizer, and then grind it into a powder with a particle size of 200 mesh;

[0020] 3) Add montmorillonite, lithium-based bentonite and borax to the ball mill in turn, grind ...

Embodiment 2

[0025] A double-layer straight-core plywood, which is composed of a face plate, a core board and a bottom board from top to bottom, which are formed by hot pressing with an adhesive; Pressed, the wood grain direction of the two middle boards is the same; the adhesive is prepared according to the following process:

[0026] 1) Weigh 2 parts of potassium methyl silicate, 3 parts of sodium lauryl sulfate, 3 parts of hydroxyethyl cellulose, 5 parts of zinc stearate, 5 parts of boric acid, 5 parts of montmorillonite, lithium 7 parts of base bentonite, 9 parts of silica gel powder, 9 parts of wheat straw, 12 parts of borax, 30 parts of starch ether, 35 parts of polyvinyl alcohol, 80 parts of methyl acrylate, 110 parts of ethyl acrylate, and 1000 parts of distilled water;

[0027] 2) Crush the wheat straw with a pulverizer, and then grind it into a powder with a particle size of 200 mesh;

[0028] 3) Add montmorillonite, lithium-based bentonite and borax to the ball mill in turn, gr...

Embodiment 3

[0033] The performance parameter test of adhesive of the present invention:

[0034] 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:

[0035] Table 1

[0036]

[0037] Conclusion: The adhesive prepared by the invention is environmentally friendly and pollution-free, has strong bonding strength, good stability, long board opening time, and is suitable for plywood processing.

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Abstract

The invention belongs to the field of interior decorating boards, and discloses a double-layer oriented strand laminated plywood. The double-layer oriented strand laminated plywood is respectively composed of a face board, a core board and a bottom board from top to bottom, which are hot-pressed through an adhesive. The core board is formed by carrying out hot pressing on two intermediate boards through an adhesive. The plywood adopts the double-layer oriented strand laminated structure; and the adhesive with stable service performance is used between every two adjacent layers, has the advantages of high adhesive force, environment friendliness and no pollution, and enhances the properties and market competitiveness of the plywood.

Description

technical field [0001] The invention belongs to the field of interior decoration boards, and in particular relates to a double-layer straight-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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J151/02C09J11/04C09J11/06C09J11/08C08F251/00C08F220/14C08F220/18B27D1/04
CPCB27D1/04C08F251/00C08K2201/014C08L2201/02C09J11/04C09J11/06C09J11/08C09J151/02C08L97/02C08K13/02C08K3/346C08K2003/387C08K5/098C08F220/18
Inventor 朱景振陈亮何晖吴昊朱强
Owner SHANDONG XUANJIN MACHINERY CO LTD
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