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Machine pressed plate and processing method thereof

A processing method and board technology, applied in wood processing appliances, pressurized wood treatment, wood treatment, etc., can solve the problem that machine-pressed boards cannot be used normally, poor oxidation resistance and fire resistance, machine-pressed boards fall off and slag, etc. problems, to avoid the contact of wood particles with water, good oxidation resistance and fire resistance, and a wide range of applications

Inactive Publication Date: 2020-04-03
锦屏县寰宇木业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing machine-pressed boards have the following problems. Because they are processed in the way of laying-spraying-pressing, when the machine-pressed boards are located in a humid environment or in contact with water for a long time, the wood in the machine-pressed boards will absorb water. The expansion coefficient of wood after absorbing water is large, so the wood in the machine-pressed board absorbs water and expands, destroying the original bonding structure during the expansion process, resulting in the failure of the machine-pressed board to be used normally. After absorbing water and swelling, the machine-pressed plate in the expanded part will fall off and slag; the existing glue has poor oxidation resistance and fire resistance. In order to solve the above problems, our company has developed a machine-pressed plate and its processing methods

Method used

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  • Machine pressed plate and processing method thereof
  • Machine pressed plate and processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1. A machine-pressed plate, the processing method comprising the following steps:

[0031] A, waste wood is crushed to obtain product a, and the particle size of product a is 3-8mm;

[0032] B, product a is subjected to high-pressure cooking, and the temperature of high-pressure cooking is 150° C. to obtain product b;

[0033] C. Dry product b at a temperature of 120° C. to obtain product c;

[0034] D, the product c and the glue are in a weight ratio of 2:1, heated and stirred, and mixed uniformly to obtain the product d; the glue is made of the following raw materials in the weight component ratio; 20 parts of phenolic resin glue, 10 parts of resorcinol 5 parts of vinyl acetate, 2 parts of ethyl acetate, 5 parts of emulsifier, 7 parts of anti-aging agent, 4 parts of softening oil and 5 parts of flame retardant;

[0035] E. Pour the product d into the mold, lay it flat, and hot press molding. The temperature of hot pressing molding is 80°C to get the finishe...

Embodiment 2

[0036] Example 2. A machine-pressed plate, the processing method comprising the following steps:

[0037] A, waste wood is crushed to obtain product a, and the particle size of product a is 3-8mm;

[0038] B, product a is subjected to autoclaving, and the temperature of autoclaving is 180° C. to obtain product b;

[0039] C. Dry product b at a temperature of 140° C. to obtain product c;

[0040] D, the product c and the glue are in a weight ratio of 3:1, heated and stirred, and mixed uniformly to obtain the product d; the glue is made of the following raw materials in the weight component ratio; 28 parts of phenolic resin glue, 12 parts of resorcinol 13 parts of vinyl acetate, 4 parts of ethyl acetate, 10 parts of emulsifier, 7 parts of anti-aging agent, 6 parts of softening oil and 7 parts of flame retardant;

[0041] E. Pour the product d into the mold, lay it flat, and hot press molding. The temperature of hot pressing molding is 90°C to get a finished product.

Embodiment 3

[0042] Example 3. A machine-pressed plate, the processing method comprising the following steps:

[0043] A, waste wood is crushed to obtain product a, and the particle size of product a is 3-8mm;

[0044] B, product a is subjected to autoclaving, and the temperature of autoclaving is 200° C. to obtain product b;

[0045] C. Dry product b at a temperature of 150° C. to obtain product c;

[0046] D, the c product and the glue are 4:1 by weight, heated and stirred, and mixed uniformly to obtain the d product; the glue is made of the following raw materials in the weight component ratio; 22 parts of phenolic resin glue, 18 parts of resorcinol 5 parts of vinyl acetate, 10 parts of ethyl acetate, 11 parts of emulsifier, 12 parts of anti-aging agent, 7 parts of softening oil and 9 parts of flame retardant;

[0047] E. Pour the product d into the mold, lay it flat, and hot press molding. The temperature of hot pressing molding is 100°C to get the finished product.

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Abstract

The invention discloses a machine pressed plate and a processing method thereof. The surfaces of wood particles of the machine pressed plate are all bonded with glue; the specific processing method comprises the following steps of A, crushing waste wood to obtain a product (a); B, performing high-temperature cooking on the product (a) to obtain a product (b); C, drying the product (b) to obtain aproduct (c); D, heating and stirring the product (c) and the glue, and mixing uniformly to obtain a product (d), wherein the glue is prepared from the following raw materials in parts by weight: 20 to30 parts of phenolic resin glue, 10 to 20 parts of resorcinol, 5 to 15 parts of vinyl acetate, 2 to 10 parts of ethyl acetate, 5 to 15 parts of an emulsifying agent, 7 to 14 parts of an anti-aging agent, 4 to 8 parts of softening oil and 5 to 10 parts of a flame retardant; and E, pouring the product (d) into a mould, tiling, performing hot-pressing and forming to obtain a finished product. The machine pressed plate has the beneficial effects of good water resistance, oxidation resistance and fire resistance, good physical performance, wide application range, long service life, high processingefficiency, low cost and sustainable utilization.

Description

technical field [0001] The invention relates to a machine-pressed plate, in particular to a machine-pressed plate and a processing method thereof. Background technique [0002] Our company is engaged in the processing and sales of machine-pressed boards, and our company's machine-pressed boards are made of crushed waste wood, and the crushed wood is spread on a layer, glue is sprayed on the surface, and a layer of crushed wood is laid flat on the surface. Carry out press molding, repeat tiling-spraying-press bonding molding to the corresponding thickness, and follow-up processing to obtain a machine-pressed sheet. The existing machine-pressed boards have the following problems. Because they are processed in the way of laying-spraying-pressing, when the machine-pressed boards are located in a humid environment or in contact with water for a long time, the wood in the machine-pressed boards will absorb water. The expansion coefficient of wood after absorbing water is large, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N3/02B27N3/10B27N3/18B27N3/20B27N1/02B27L11/00B27K5/00
CPCB27K5/008B27K5/0085B27L11/00B27N1/0209B27N3/002B27N3/02B27N3/10B27N3/18B27N3/203
Inventor 龙章华杨通林詹训才
Owner 锦屏县寰宇木业有限公司
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