A kind of production method of high temperature heat treatment bamboo bundle

A technology of high temperature heat treatment and production method, which is applied in reed/straw treatment, wood compression, wood processing appliances, etc., can solve the problem of lack of clear moisture content before and after ultra-high temperature heat treatment of wood, impossible to achieve air-dry moisture content, long production cycle, etc. The problem is to improve the anti-deformation and cracking performance, the difference in physical and mechanical properties is small, and the production efficiency is high.

Active Publication Date: 2017-10-27
ZHEJIANG FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method does not specify the moisture content of wood before and after ultra-high temperature heat treatment. After impregnating a plate with a normal thickness of 30 mm, it is impossible to reach the air-dry moisture content in one week of air drying. Air drying is also required before impregnation. long and occupy space

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In the embodiment of the present invention, a kind of production method of high-temperature heat treatment bamboo bundle comprises the following steps:

[0022] (1) Bamboo slices: fresh moso bamboo is cut, divided, and roughly planed to make bamboo slices with a length of 2000mm, a width of 10mm, and a thickness of 5mm, and then dry them naturally;

[0023] (2) Softening treatment: Put the bamboo slices into the softening treatment tank, use vacuum pressurization method, first evacuate the vacuum to -0.08MPa, keep it for 5min, then heat the 50% urea aqueous solution to 50°C and suck it into the treatment tank Add antifungal agent at the same time, use air to pressurize to 0.8MPa, keep for 2 hours, and keep the temperature of the impregnating solution at 40-50°C, after treatment, let it stand naturally until the surface of the bamboo slices is dry;

[0024] (3) Rolling: the bamboo slices are rolled on the rolling machine at a speed of 40r / min, the maximum line pressure i...

Embodiment 2

[0028] In the embodiment of the present invention, a kind of production method of high-temperature heat treatment bamboo bundle comprises the following steps:

[0029] (1) Bamboo slices: Fresh moso bamboo is cut, divided, and roughly planed to make bamboo slices with a length of 2000mm, a width of 12mm, and a thickness of 6mm.

[0030] (2) Softening treatment: Soak the bamboo slices in 25% ammonia water softening treatment pool for 4 hours, add anti-fungal agent at the same time, after treatment, let it stand naturally for 24 hours, until the water content is 30-50%;

[0031](3) Rolling: Put the bamboo slices on the rolling machine with a speed of 30r / min, a maximum line pressure of 35N / mm, and a loosening comb: the tooth thickness is 1.2mm, the tooth spacing is 2mm, and the bamboo beams are combed three times. 12mm, thickness 6mm, and air-dried for 2 days in a natural state, hoisted into the high-temperature heat treatment tank, and closed the tank door;

[0032] (4) Heat tr...

Embodiment 3

[0035] In the embodiment of the present invention, a kind of production method of high-temperature heat treatment bamboo bundle comprises the following steps:

[0036] (1) Bamboo slices: fresh moso bamboo is cut, divided, and roughly planed to make bamboo slices with a length of 2000mm, a width of 12mm, and a thickness of 6mm;

[0037] (2) Rolling: put the bamboo chips on the rolling machine with a speed of 30r / min, a maximum line pressure of 35N / mm, and a decomposing comb: the tooth thickness is 1.2mm, the tooth spacing is 2mm, and the bamboo bundles are decomposed 3 times, and the width of the bamboo bundles after decompression is 12mm , with a thickness of 6mm, and air-dried for 2 days in a natural state, hoisted into the high-temperature heat treatment tank, and closed the tank door;

[0038] (3) Softening treatment: put the bamboo slices into hot water for steaming at a temperature of 60-70°C for 4 hours, and at the same time add anti-corrosion, anti-mildew, and insect-re...

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Abstract

The invention discloses a production method for high-temperature heat treatment of a bamboo bunch. The production method comprises the following steps: (1) preparation of bamboo chips; (2) softening treatment; (3) rolling compaction; (4) a heat treatment process; and (5) cooling and humidifying treatment. The production method is simple in production process, high in production efficiency, short in processing period, free of heat-source equipment cooling, and low in energy consumption and waste; heat transfer oil is adopted as a heat source; compared with high-temperature and high-pressure saturated steam, the heat transfer oil has the advantages that not much waste gas is generated during bamboo bunch preparation, and the production process is environmentally friendly; and meanwhile, when the bamboo bunch is subjected to high-temperature heat treatment in an atmosphere of ammonia gas, the prepared bamboo bunch is uniform is defibering effect, high in permeability and uniform in bamboo color, the difference between physical and mechanical properties is relatively small, and the anti-distortion and anti-cracking properties of reconstituted bamboo timber can be improved.

Description

technical field [0001] The invention relates to the field of bamboo wood processing, in particular to a production method of high-temperature heat-treated bamboo bundles. Background technique [0002] Bamboo reconstituted lumber is a plate or square lumber made of bamboo bundles, which are formed along the grain and glued by hot pressing (or cold pressing). It has excellent texture, beautiful texture and excellent material properties and has been widely used in indoor Demand areas such as exterior flooring, furniture and decoration materials. However, in the production process, due to the high hardness of the bamboo strips, the incomplete release of the bamboo bundles during the forming of the bamboo bundles affects the uniform penetration and distribution of the resin in the bamboo bundles, hinders the gluing of the bamboo bundles, reduces the performance of the product, and has typical defects such as wire jumping and poor water resistance; In addition, in the process of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27J1/00B27K9/00B27M1/02
CPCB27J1/00B27K9/002B27M1/02
Inventor 章卫钢李延军唐荣强
Owner ZHEJIANG FORESTRY UNIVERSITY
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