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A kind of preparation method of multilayer plywood

A plywood and adhesive technology, which is used in the joining of wooden veneers, manufacturing tools, flat products, etc., can solve the problems of aging and cracking of plywood, decrease in glue viscosity, waste of manpower and material resources, etc. The effect of increasing insect resistance and environmental protection performance

Active Publication Date: 2022-02-18
浦北县昌宏木业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the existing plywood is prone to aging and cracking, and the viscosity of the glue decreases, resulting in damage to the floor, which often requires renovation and consumes a lot of manpower and material resources.

Method used

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  • A kind of preparation method of multilayer plywood
  • A kind of preparation method of multilayer plywood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method for multilayer plywood, comprising the following steps:

[0026] (1) After cutting the wood into sawdust, wood particles or shavings, dry it, soak it in the insect repellent liquid for a period of time, take it out and dry it naturally, then immerse it in the insect repellent liquid again, take it out and dry it to obtain the plywood raw material;

[0027] (2) After laying the plywood raw material flat, spray the adhesive, and spread a layer of sound insulation material, which is a thin sheet compacted with mineral wool, spray the adhesive on the surface, and then spread a layer of plywood raw material to pressurize Prepare and form a first-grade plywood, the thickness of the first-grade plywood is 4mm;

[0028] (3) Wire-cut the first-grade plywood in step (2) on both sides of the first-grade plywood. After the adhesive is laid on the plywood raw materials, it is pressurized to form a secondary plywood. The method of spraying the adhesive is first ...

Embodiment 2

[0037] A preparation method for multilayer plywood, comprising the following steps:

[0038] (1) After cutting the wood into sawdust, wood particles or shavings, dry it, soak it in the insect repellent liquid for a period of time, take it out and dry it naturally, then immerse it in the insect repellent liquid again, take it out and dry it to obtain the plywood raw material;

[0039] (2) After laying the plywood raw material flat, spray the adhesive, and spread a layer of sound insulation material, which is a thin sheet compacted with mineral wool, spray the adhesive on the surface, and then spread a layer of plywood raw material to pressurize Prepare and form a first-grade plywood, the thickness of the first-grade plywood is 12mm;

[0040] (3) Wire-cut the first-grade plywood in step (2) on both sides with a metal wire. After cutting out several arc-shaped grooves, the depth of the groove is 1.5mm, and spray on the upper and lower sides of the first-grade plywood. After the ...

Embodiment 3

[0049] A preparation method for multilayer plywood, comprising the following steps:

[0050] (1) After cutting the wood into sawdust, wood particles or shavings, dry it, soak it in the insect repellent liquid for a period of time, take it out and dry it naturally, then immerse it in the insect repellent liquid again, take it out and dry it to obtain the plywood raw material;

[0051] (2) After laying the plywood raw material flat, spray the adhesive, and spread a layer of sound insulation material, which is a thin sheet compacted with mineral wool, spray the adhesive on the surface, and then spread a layer of plywood raw material to pressurize Prepare and form a first-grade plywood, the thickness of the first-grade plywood is 9mm;

[0052] (3) Carry out wire cutting on both sides of the first-grade plywood in step (2), after cutting out several arc-shaped grooves, the depth of the groove is 1mm, and spray glue on the upper and lower sides of the first-grade plywood After the ...

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Abstract

The invention discloses a preparation method of multi-layer plywood, which comprises the following steps: cutting the wood into sawdust, wood granules or shavings, drying it, soaking it in an insect repellent liquid for a period of time, taking it out and drying it naturally, and drying it again. Immerse in insect repellant liquid, take out and dry to get plywood raw material; lay the plywood raw material flat first, spray adhesive, spread a layer of sound insulation material, spray adhesive on the surface, and then spread a layer of plywood raw material, pressurized preparation Forming a first-grade plywood; after cutting a number of arc-shaped grooves on both sides of the first-grade plywood with metal wires, spraying adhesive on the upper and lower sides of the first-grade plywood and laying plywood raw materials, pressurizing to form a second-grade plywood. multi-level plywood; repeat several times to form multi-level plywood, dry it, spray anti-mildew liquid on the synthesized multi-level plywood, and dry to obtain plywood finished product. The plywood preparation method of the invention is simple to operate, and the prepared plywood has no aldehyde, good safety and is convenient for wide popularization.

Description

technical field [0001] The invention relates to the technical field of plate preparation, in particular to a preparation method of multi-layer plywood. Background technique [0002] With the development of society and the gradual improvement of people's living standards, people pay more and more attention to the quality and grade of housing decoration, so more and more people choose to make wooden floors. With less and less wood flooring cut from planks, people's eyes are gradually turning to plywood, which uses scraps to glue together to form boards. When making plywood, you need to use adhesives for bonding. Urea-formaldehyde resin is currently the most widely used adhesive in man-made composite panels, and its main raw materials are formaldehyde and urea. Formaldehyde often remains in urea-formaldehyde resin glue. Formaldehyde is a kind of colorless strong irritating gas, has been identified as carcinogenic and teratogenic shape material by the World Health Organizatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27D1/08B27N3/02B27N3/10B27N3/18B27N3/20B27N1/02C09J197/02C09J11/04C09J11/06C09J11/08
CPCB27D1/08B27N3/002B27N3/02B27N3/10B27N3/18B27N3/20B27N1/0209C09J197/02C09J11/04C09J11/06C09J11/08C08L2205/035C08K2003/2227
Inventor 侯慧
Owner 浦北县昌宏木业有限公司
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