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Preparation method of waterproof weather-proof outdoor plywood

A plywood and weather-resistant technology, applied in the jointing of wooden veneers, manufacturing tools, wood treatment, etc., can solve the problems of veneer bearing capacity reduction, plywood cracking, veneer damage, etc., to reduce damage, increase strength and The effect of water resistance and high usability

Inactive Publication Date: 2019-11-22
含山县金中环装饰材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Plywood is one of the commonly used materials for furniture. It is one of the three major wood-based panels. It can also be used in airplanes, ships, trains, automobiles, buildings, and packing boxes. If it is used outdoors, plywood needs to be weather-resistant and waterproof. To avoid cracking of plywood after being exposed to water, the plywood used outdoors is currently classified as Class I plywood, which focuses attention and research hotspots on the adhesive. The main purpose is to make the adhesive weather-resistant and water-resistant, so the plywood will be Weather resistance and water resistance. However, the changing weather outside not only affects the adhesive, but also damages the veneer, reducing the endurance of the veneer. Even if the adhesive is strong, the veneer itself is damaged. If it is damaged, the plywood will also lose its function, so it is necessary to strengthen the strength and durability of the veneer itself

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for preparing waterproof and weather-resistant plywood for outdoor use, comprising the following steps:

[0019] (1) Veneer preparation: Cut the wood into 2m-long wood sections, and perform rotary cutting on the wood so that the thickness of the veneer is 0.4~0.6mm to obtain the veneer;

[0020] (2) Soaking: Put the veneer in the soaking solution and soak it at 2°C for 6 hours, so that the soaking solution can fully immerse the veneer, increase the strength and water resistance of the veneer, and delay the damage to the veneer caused by external climate changes, take it out, Drain the water to soak the veneer; for the soaking solution, Lithium Carbonate is added into an acetic acid solution with a volume fraction of 6%, stirred until completely dissolved, so that the mass percent concentration of Lithium Retard is 2.3%;

[0021] (3) Fumigation: Stack the soaked veneers with a gap of 3~6cm between the plates, first raise the temperature to 120°C at a rate of 2.3...

Embodiment 2

[0026] A method for preparing waterproof and weather-resistant plywood for outdoor use, comprising the following steps:

[0027] (1) Veneer preparation: Cut the wood into 2m-long wood sections, and perform rotary cutting on the wood so that the thickness of the veneer is 0.4~0.6mm to obtain the veneer;

[0028] (2) Soaking: Put the veneer in the soaking solution and soak it at 4°C for 7 hours, so that the soaking solution can fully immerse the veneer, increase the strength and water resistance of the veneer, and delay the damage to the veneer caused by external climate changes, take it out, Drain the water to soak the veneer; for the soaking solution, Lithium Carbonate is added into an acetic acid solution with a volume fraction of 7%, stirred until completely dissolved, so that the mass percent concentration of Lithium Retard is 2.4%;

[0029] (3) Fumigation: Stack the soaked veneers with a gap of 3-6cm between the plates, first raise the temperature to 125°C at a rate of 2.5...

Embodiment 3

[0034] A method for preparing waterproof and weather-resistant plywood for outdoor use, comprising the following steps:

[0035] (1) Veneer preparation: Cut the wood into 2m-long wood sections, and perform rotary cutting on the wood so that the thickness of the veneer is 0.4~0.6mm to obtain the veneer;

[0036](2) Soaking: Put the veneer in the soaking solution and soak it at 6°C for 8 hours, so that the soaking solution can fully immerse the veneer, increase the strength and water resistance of the veneer, and delay the damage to the veneer caused by external climate changes, take it out, Drain the water to soak the veneer; for the soaking solution, Lithium Carbonate is added into an acetic acid solution with a volume fraction of 8%, stirred until completely dissolved, so that the mass percent concentration of Lithium Retard is 2.5%;

[0037] (3) Fumigation: Stack the soaked veneers with a gap of 3-6cm between the plates. First, heat up to 130°C at a rate of 2.7°C / min and kee...

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Abstract

The invention mainly relates to the technical field of artificial board processing, and discloses a preparation method of waterproof weather-proof outdoor plywood, which comprises the following steps:veneer preparation, soaking, fumigation, gluing and hot pressing. According to the preparation method, the plywood has high strength, high waterproof weather-proof performance, no deformation duringhigh-temperature boiling, the service life which is prolonged by 2.5 times than that of traditional I-type plywoods, and high practicability. A veneer is soaked in a soaking solution after rotary cutting, the soak solution is a lithium carbonate solution, lithium carbonate permeates into the veneer, the strength and the aging resistance of the veneer are improved, and damage to the veneer caused by external climate changes is delayed.

Description

technical field [0001] The invention mainly relates to the technical field of wood-based panel processing, in particular to a preparation method of waterproof and weather-resistant outdoor plywood. Background technique [0002] Plywood is one of the commonly used materials for furniture. It is one of the three major wood-based panels. It can also be used in airplanes, ships, trains, automobiles, buildings, and packing boxes. If it is used outdoors, plywood needs to be weather-resistant and waterproof. To avoid cracking of plywood after being exposed to water, the plywood used outdoors is currently classified as Class I plywood, which focuses attention and research hotspots on the adhesive. The main purpose is to make the adhesive weather-resistant and water-resistant, so the plywood will be Weather resistance and water resistance. However, the changing weather outside not only affects the adhesive, but also damages the veneer, reducing the endurance of the veneer. Even if th...

Claims

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Application Information

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IPC IPC(8): B27K3/02B27K3/52B27K5/00B27K3/20B27D1/08
CPCB27D1/08B27K3/02B27K3/20B27K3/52B27K5/0085B27K2240/00B27K2240/70
Inventor 郭坤
Owner 含山县金中环装饰材料有限公司
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