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Manufacturing method for bamboo three-ply board

A production method and plywood technology, applied in the field of board manufacturing, can solve the problems of low bonding strength of natural adhesives, non-natural adhesives containing formaldehyde, and poor water resistance, so as to achieve weak adhesion, prevent bamboo cracking, and prevent bamboo from cracking. good cracking effect

Active Publication Date: 2018-08-03
贵港市业成木业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention solves the problems in the prior art that natural adhesives have low bonding strength and poor water resistance, and non-natural adhesives contain formaldehyde and are unsafe, and provide a method for making bamboo plywood

Method used

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  • Manufacturing method for bamboo three-ply board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of manufacture method of bamboo plywood comprises the steps:

[0029] (1) heat treatment: the bamboo is placed in the lye and boiled for 30min; the lye is a sodium hydroxide solution with a molar concentration of 1mol / L;

[0030] (2) coating anti-cracking agent: after the bamboo after the poaching is taken out from lye, smear on the surface of bamboo with anti-cracking agent immediately; Described anti-cracking agent coating amount is 80g / m ; Described anti-cracking agent is made of The following raw materials are composed of parts by mass: 20 parts of turpentine, 5 parts of camphor, 2 parts of chitosan, 9 parts of cornstarch, 1 part of ethyl acetate, 7 parts of flavonoids, and 1 part of phenol;

[0031] (3) making bamboo chips;

[0032] (4) drying: the wood is placed in a drier with a relative air humidity of 30%, and the temperature is 30°C, and the wind speed is 20m / s to dry the wood to a moisture content of 15%;

[0033] (5) Repair;

[0034] (6) Glue coati...

Embodiment 2

[0041] A kind of manufacture method of bamboo plywood comprises the steps:

[0042] (1) heat treatment: the bamboo is placed in the lye and boiled for 20min; the lye is potassium hydroxide with a molar concentration of 1mol / L;

[0043] (2) be coated with anti-cracking agent: after the bamboo after the poaching is taken out from lye, be applied to the surface of bamboo with anti-cracking agent immediately; Described anti-cracking agent coating amount is 50g / m ; Described anti-cracking agent is made of The following raw materials are composed of parts by mass: 30 parts of turpentine, 1 part of camphor, 7 parts of chitosan, 2 parts of cornstarch, 5 parts of ethyl acetate, 4 parts of flavonoids, and 7 parts of phenol;

[0044] (3) making bamboo chips;

[0045] (4) Drying: the wood is placed in a drier with a relative air humidity of 26%, and the temperature is 40°C, and the wind speed is 10m / s to dry the wood to a moisture content of 20%;

[0046] (5) Repair;

[0047] (6) Glue ...

Embodiment 3

[0054] A kind of manufacture method of bamboo plywood comprises the steps:

[0055] (1) heat treatment: the bamboo is placed in the lye and boiled for 25min; the lye is a calcium hydroxide solution with a molar concentration of 2mol / L;

[0056] (2) be coated with anti-cracking agent: after the bamboo after the poaching is taken out from lye, be applied to the surface of bamboo with anti-cracking agent immediately; Described anti-cracking agent coating amount is 60g / m ; Described anti-cracking agent is made of The following raw materials are composed of parts by mass: 25 parts of turpentine, 3 parts of camphor, 5 parts of chitosan, 6 parts of cornstarch, 3 parts of ethyl acetate, 5 parts of flavonoids, and 6 parts of phenol;

[0057] (3) making bamboo chips;

[0058] (4) Drying: the wood is placed in a drier with a relative air humidity of 28%, and the temperature is 35°C, and the wind speed is 15m / s to dry the wood to a moisture content of 18%;

[0059] (5) Repair;

[0060]...

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Abstract

The invention discloses a manufacturing method for a bamboo three-ply board. The manufacturing method comprises the steps of heat treatment, anti-cracking agent coating, bamboo chip manufacturing, drying, repairing, gluing, assembling, prepressing, hot pressing, cooling, edge cutting and polishing. The heat treatment process is that a bamboo is put into alkali liquor to be boiled for 20 min-30 min. The anti-cracking agent coating process is that the surface of the bamboo is coated with an anti-cracking agent immediately when the water boiled bamboo is taken out of the alkali liquor. The dryingcondition is that the wood is dried until the water content of the wood is 15%-20%. The gluing process is that the surface of the wood is coated with an adhesive so that a glue layer can be formed. The prepressing process is that the assembled wood is subjected to standing for 10 min-20 min, then, prepressing is carried out for 10 min-20 min at the temperature of 0 DEG C-5 DEG C, and the pressureadopted in prepressing is 0.5 Mpa-1.0 Mpa. The hot pressing process is that the prepressed wood is pressed for 0.5 min-1 min under the pressure of 1.5 Mpa-2 Mpa at the temperature of 100 DEG C-120 DEG C. The bamboo three-ply board manufactured through the method is free of formaldehyde, high in safety, good in adhesiveness and high in quality.

Description

technical field [0001] The invention relates to the technical field of plate manufacturing, in particular to a method for making a bamboo plywood. Background technique [0002] Plywood is made of three layers of veneer made of different materials. Since the adhesive containing formaldehyde is used in the production, the use of plywood to make furniture will release formaldehyde. In addition to causing respiratory and nervous system diseases, such as cough, sore throat, chest tightness, dizziness, nausea, limb weakness, dyspnea, lethargy and other symptoms, formaldehyde can also induce the development of cancers such as nose cancer, throat cancer, skin cancer and leukemia. occur. [0003] Most of the adhesives used in the prior art contain formaldehyde, and the adhesives without formaldehyde can be natural polymers, mainly soybean protein adhesives, etc., but this adhesive has low bonding strength and poor water resistance. shortcoming. Therefore, a formaldehyde-free adhe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27D1/04C09J189/00C09J105/02C09J105/08C09J11/06C09J11/08
CPCB27D1/04C08L2205/025C08L2205/035C09J11/06C09J11/08C09J189/00C08L5/02C08L5/08C08L89/00C08K5/098C08K5/053
Inventor 杨静
Owner 贵港市业成木业有限公司
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