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Five-layer plywood and manufacturing method thereof

A technology for plywood and glue, which is applied in the directions of wood layered products, chemical instruments and methods, adhesives, etc., can solve the problems that the bonding strength needs to be improved and the cost of raw materials with formaldehyde content is high, and the preparation process and preparation equipment are simple, feasible and improved. Effects of performance and market competitiveness, good water resistance and antibacterial properties

Active Publication Date: 2016-06-08
LINYI SHANDA WOOD IND 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

[0019] A five-layer plywood, which has a layered structure, is respectively a panel, a three-layer middle board and a bottom board from top to bottom, and is formed by hot pressing an adhesive between each board layer; the adhesive is prepared according to the following process Obtained: step 1) weighing raw materials, step 2) crushing, step 3) ball milling and stirring, step 4) heating and stirring, step 5) preparing adhesive;

[0020] Specifically, it is prepared according to the following process:

[0021] Step 1) Weigh raw materials: Weigh 1 part of ammonia water, 2 parts of sodium lauryl sulfate, 2 parts of silicon carbide, 2 parts of zinc stearate, 3 parts of bean root, 4 parts of montmorillonite, lithium 4 parts of base bentonite, 5 parts of nano silicon dioxide, 5 parts of peanut shell, 20 parts of starch ether, 30 parts of polyvinyl alcohol, 45 parts of methyl acrylate, 70 parts of ethyl acrylate, 600 parts of distilled water;

[0022] Step 2) Pulverization: Mix the ...

Embodiment 2

[0027] A five-layer plywood, which has a layered structure, is respectively a panel, a three-layer middle board and a bottom board from top to bottom, and is formed by hot pressing an adhesive between each board layer; the adhesive is prepared according to the following process Obtained: step 1) weighing raw materials, step 2) crushing, step 3) ball milling and stirring, step 4) heating and stirring, step 5) preparing adhesive;

[0028] Specifically, it is prepared according to the following process:

[0029] Step 1) Weigh raw materials: Weigh 2 parts of ammonia water, 3 parts of sodium lauryl sulfate, 3 parts of silicon carbide, 3 parts of zinc stearate, 5 parts of bean root, 6 parts of montmorillonite, lithium 6 parts of base bentonite, 7 parts of nano-silica, 7 parts of peanut shells, 30 parts of starch ether, 40 parts of polyvinyl alcohol, 70 parts of methyl acrylate, 110 parts of ethyl acrylate, and 900 parts of distilled water;

[0030] Step 2) Pulverization: Mix the pe...

Embodiment 3

[0035] The performance parameter test of adhesive of the present invention:

[0036] 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:

[0037] Table 1

[0038] performance parameters parameter standard Embodiment 1 of the present invention Specific gravity, g / ml 1.05-1.3 1.14 Formaldehyde emission, mg / L 0.5（E0） ＜0.02 Bonding strength, Mpa ＞0.5 1.69 stability, days ＞30 100 Plate opening time, h ＞4h 10h

[0039] 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 decorative boards and discloses five-layer plywood. The five-layer plywood is of a layered structure and comprises a face board, three layers of middle boards and a bottom board from top to bottom. The boards are formed by hot pressing through adhesives. The five-layer plywood is characterized in that the adhesives are prepared according to the following process comprising the first step of weighing raw materials, the second step of smashing, the third step of ball-mill mixing, the fourth step of heating mixing, and the fifth step of preparation of the adhesives. The five-layer plywood is of the five-layer-board structure, the stable and environment-friendly adhesives are used among the boards, environmental protection is achieved, pollution is avoided, and the market prospects are good.

Description

technical field [0001] The invention belongs to the field of decorative boards, and in particular relates to a five-layer 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 sides of the center lay...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27D1/04B27D1/08B32B21/04B32B7/12C09J151/02C09J11/08C09J11/06C09J11/04
CPCB27D1/04B27D1/08B32B7/12B32B21/042B32B2307/7145C09J11/04C09J11/06C09J11/08C09J151/02C08L29/04C08K13/02C08K3/36C08K3/346C08K3/34C08K5/098
Inventor 王召龙王国桢
Owner LINYI SHANDA WOOD IND CO LTD
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