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Manufacturing method of environmentally-friendly three-ply board

A production method and technology of plywood, which is applied in the field of wood processing, can solve the problem of large formaldehyde release from plywood, achieve low peel strength, improve thermal stability, and improve overall performance

Inactive Publication Date: 2018-08-24
广西艾尚嘉家居有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for making environmentally friendly plywood to solve the problem that existing plywood releases a large amount of formaldehyde

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for making environmentally friendly plywood, comprising the following steps:

[0028] (1) Drying of the veneer: drying the veneer so that the moisture content of the veneer is 10%; the veneer includes a core board, a front board and a back board.

[0029] (2) Embryo grouping treatment: Coat the front and back of the core board treated in step (1) with a special adhesive, and stick the front board and the back board to the center board respectively. The front and back of the core board to obtain the blank. The weight of applying the special adhesive per square meter of the core board is 240g. The special adhesive is prepared from the following raw materials in parts by weight: 60 parts of phenolic glue, 30 parts of soybean protein glue, 30 parts of polyvinyl alcohol, 6 parts of starch, 2 parts of borax, 8 parts of sodium hydroxide and 30 parts of talcum powder . Wherein, the preparation method of described phenolic glue comprises the steps:

[0030] A1. Prep...

Embodiment 2

[0039] A method for making environmentally friendly plywood, comprising the following steps:

[0040] (1) Drying of the veneer: drying the veneer so that the moisture content of the veneer is 5%; the veneer includes a core board, a front board and a back board.

[0041] (2) Embryo grouping treatment: Coat the front and back of the core board treated in step (1) with a special adhesive, and stick the front board and the back board to the center board respectively. The front and back of the core board to obtain the blank. The weight of applying the special adhesive per square meter of the core board is 180g. The special adhesive is prepared from the following raw materials in parts by weight: 50 parts of phenolic glue, 20 parts of soybean protein glue, 20 parts of polyvinyl alcohol, 4 parts of starch, 1 part of borax, 5 parts of sodium hydroxide and 20 parts of talcum powder . Wherein, the preparation method of described phenolic glue comprises the steps:

[0042] A1. Prepar...

Embodiment 3

[0051] A method for making environmentally friendly plywood, comprising the following steps:

[0052] (1) Drying of the veneer: drying the veneer so that the moisture content of the veneer is 8%; the veneer includes a core board, a front board and a back board.

[0053] (2) Embryo grouping treatment: Coat the front and back of the core board treated in step (1) with a special adhesive, and stick the front board and the back board to the center board respectively. The front and back of the core board to obtain the blank. The weight of applying the special adhesive per square meter of the core board is 210g. The special adhesive is prepared from the following raw materials in parts by weight: 55 parts of phenolic glue, 25 parts of soybean protein glue, 25 parts of polyvinyl alcohol, 5 parts of starch, 1.5 parts of borax, 6.5 parts of sodium hydroxide and 25 parts of talcum powder . Wherein, the preparation method of described phenolic glue comprises the steps:

[0054] A1. P...

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PUM

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Abstract

The invention discloses a manufacturing method of an environmentally-friendly three-ply board, and belongs to the technical field of wood processing. The method comprises the following steps of singleboard drying, blank forming processing, thermal pressing, cold pressing, edge cutting and polishing, wherein a single board comprises a middle core board, a front surface board and a rear surface board; during blank forming processing, the front surface and the rear surface of the middle core board are coated with special adhesive, and the front surface board and the rear surface board are correspondingly adhered to the front surface and the rear surface of the middle core board so as to obtain a board blank; the special adhesive is prepared through the following raw materials including, byweight, 50-60 parts of phenol glue, 20-30 parts of casein-soybean glue, 20-30 parts of polyvinyl alcohol, 4-6 parts of starch, 1-2 parts of borax, 5-8 parts of sodium hydroxide, and 20-30 parts of talcum powder. With the adoption of the method, the problem that an existing three-ply board releases a large amount of formaldehyde can be solved.

Description

technical field [0001] The invention belongs to the technical field of wood processing, and in particular relates to a manufacturing method of an environmentally friendly plywood. Background technique [0002] Plywood is a plywood made by gluing three layers of veneer together in different grain directions, which requires adhesives to be applied during the manufacturing process. Plywood is widely used in daily life because of its excellent properties such as uniform structure, small expansion and contraction, small vertical and horizontal strength difference, and not easy to crack, and its demand is increasing day by day. In the traditional plywood production method, the added adhesive contains a large amount of formaldehyde, so the furniture made of plywood will release a large amount of formaldehyde. In addition to causing diseases of the human respiratory tract and nervous system, formaldehyde can even induce the occurrence of various cancers, seriously affecting people'...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27D1/08C09J161/10C09J189/00C09J103/02C09J129/04C09J11/04
CPCB27D1/08C08K2003/387C08L2205/035C09J11/04C09J161/06C08L89/00C08L29/04C08L3/02C08K3/38C08K3/34
Inventor 杨静
Owner 广西艾尚嘉家居有限公司
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