Preparation method for novel plywood material

A new type of board technology, applied in wood treatment, impregnated wood, wood impregnation, etc., can solve the problems of reducing the bonding force between adhesives and boards, reducing the bonding strength, and easy to generate air bubbles, so as to reduce VOC release and improve gluing Intensity, organic enhancement effect

Inactive Publication Date: 2019-01-18
温州月煌科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, water-based polyurethane has poor heat resistance, and it is easy to hydrolyze when the temperature rises, reducing the bonding strength. At the same time, it is sensitive to water, and it is easy to generate air bubbles, which reduces the bonding force between the adhesive and the board, resulting in edge warping.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A preparation method for a novel plywood, comprising the steps of:

[0032] (1) the original bamboo is cut into bamboo slices, the bamboo slices are flattened, after removing the bamboo green and bamboo yellow, put into 10% sodium bicarbonate solution and cook, the cooking temperature is 80 degrees Celsius, and the cooking time is after 5 hours, Continue to cook with clean water for 1 hour, take it out and let it dry naturally for 5 hours;

[0033] (2) the bamboo chip after step (1) steaming is put into vacuum box, injects liquefied ammonia with 0.5 kilogram / cubic meter in the liquid reservoir below the vacuum box, is warming up to 60 degrees Celsius, heat preservation and heating 30 minutes;

[0034] (3) After stacking the bamboo slices treated in step (2) and naturally air-drying and aging for 5 days, put them into the preservative solution for soaking, turn on the ultraviolet light at the same time, soak at a temperature of 40 degrees Celsius, soak for 30 minutes, re...

Embodiment 2

[0047] A preparation method for a novel plywood, comprising the steps of:

[0048] (1) the original bamboo is cut into bamboo slices, the bamboo slices are flattened, after removing the green and yellow bamboo, put into 10% sodium bicarbonate solution and cook, the cooking temperature is 100 degrees Celsius, and the cooking time is after 8 hours, Continue to cook with clean water for 2 hours, take it out and let it dry naturally for 8 hours;

[0049] (2) put the bamboo chips after step (1) cooking into the vacuum box, inject liquid ammonia with 0.65 kg / cubic meter in the liquid reservoir below the vacuum box, be warming up to 80 degrees Celsius, and heat preservation and heating for 50 minutes;

[0050] (3) After stacking the bamboo slices treated in step (2) and naturally air-drying and aging for 7 days, put them into the preservative solution for soaking, turn on the ultraviolet light at the same time, soak at 45 degrees Celsius, soak for 50 minutes, remove and drain the exc...

Embodiment 3

[0063] A preparation method for a novel plywood, comprising the steps of:

[0064] (1) the original bamboo is cut into bamboo slices, the bamboo slices are flattened, after removing the green and yellow bamboo, put into 10% sodium bicarbonate solution and cook, the cooking temperature is 90 degrees Celsius, and the cooking time is after 7 hours, Continue to cook with clean water for 1.5 hours, take it out and let it dry naturally for 7 hours;

[0065] (2) the bamboo chip after step (1) steaming is put into vacuum box, injects liquefied ammonia with 0.58 kilogram / cubic meter in the liquid reservoir below vacuum box, is warming up to 70 degrees centigrade, heat preservation and heating 38 minutes;

[0066] (3) After stacking the bamboo chips treated in step (2) and naturally air-drying and aging for 7 days, put them into the preservative solution for soaking, and turn on the ultraviolet light at the same time, soaking at a temperature of 43 degrees Celsius and soaking time of 38...

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PUM

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Abstract

The invention discloses a novel preparation method for a plywood material, and relates to the field of plywood materials. The method comprises the steps of cooking of bamboo pieces, anti-corrosion treatment of bamboo pieces, drying of bamboo pieces and hot press molding for the plywood material, polyvinyl chloride is a high polymer material with thermoplasticity and is heated to the temperature above the melting point to be in a molten state, when the temperature is decreased to below the melting point, polyvinyl chloride is in a hard state, and certain mechanical strength is achieved; when being fully fused and flowing, polyvinyl chloride can uniformly permeates into the bamboo pieces, after hot pressing, good glue strength and good adhesive performance are achieved, and the mechanical performance of polyvinyl chloride is improved. Polyvinyl chloride film replaces a traditional adhesive, not only are the mechanical performance and good glue strength of the plywood material improved, but also VOC releasing of the plywood material can be effectively reduced, and the harm to the environment is reduced.

Description

technical field [0001] The invention relates to the field of boards, in particular to a preparation method of a novel glued board. Background technique [0002] Plywood is one of the commonly used materials for furniture, and it is one of the three major boards of wood-based panels. It can also provide aircraft, ships, trains, automobiles, buildings and packing boxes as useful materials. A group of veneers are formed by gluing each other vertically according to the wood grain direction of adjacent layers. Usually, the surface board and inner layer board are arranged symmetrically on both sides of the center layer and the board core. The commonly used types of plywood are three-ply board and five-ply board. Wait. Plywood can improve wood utilization and is a major way to save wood. Sliced ​​bamboo is a new type of high-grade veneer decoration material that maintains the unique texture of bamboo, has a fresh and natural and simple and elegant texture, and has performance sim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27J1/00B27K9/00B27K3/02B27K3/52B27K5/04B27D1/08
CPCB27D1/08B27J1/00B27K3/02B27K3/52B27K5/04B27K9/002
Inventor 刘东升
Owner 温州月煌科技有限公司
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