Production method capable of preventing rubber tree wood flour from being corroded by moths through physical method

A technology of production method and physical method, applied in the direction of wood treatment, wood heating, wood processing equipment, etc., can solve the problem of long soaking time, etc., to prevent drying, reduce drying cycle and drying cost, omit equipment and anti-corrosion treatment process. Effect

Active Publication Date: 2017-06-30
RUBBER RES INST CHINESE ACADEMY OF TROPICAL AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water immersion method to preserve logs and sawn timber is a traditional anti-moth method in my country, but the immersion time is long. In industry, chemical insect repellents (borides) are generally used for pressure impregnation treatment. Although borides are low-toxic and environmentally friendly, they still belong to Chemical chemicals, as people pay more and more attention to environmental protection, physical and mental health, and home safety, the market needs environmentally friendly and natural rubber wood commodity sawn timber that does not use chemical methods or add chemicals.

Method used

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  • Production method capable of preventing rubber tree wood flour from being corroded by moths through physical method
  • Production method capable of preventing rubber tree wood flour from being corroded by moths through physical method
  • Production method capable of preventing rubber tree wood flour from being corroded by moths through physical method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] 1) Saw small rubber wood logs into small-sized lumber as raw material for glulam finger-jointed boards. The thickness of the board is 2.5cm, the length of the board is 40cm, 50cm, 60cm, 70cm, 80cm, and the width of the board is 4.5cm. 5.5cm, 6.5cm, 7.5cm;

[0069] 2) Stack the plates and counterweight them, and dry them in air;

[0070] 3) Put the wood into a high-temperature hydrothermal treatment kiln, start heating, and pass in steam. When the temperature is below 95°C, keep the dry bulb and wet bulb to heat up synchronously. The air window is slightly opened, so that the excess moisture released by the wood can be naturally dissipated through the gap of the exhaust window. Keep it for 2 days. When the moisture content of the wood is lower than 15%, the temperature is lowered to 80°C, and the humidity balance treatment is completed until the moisture content of the wood is 12%. , the kiln temperature is lower than 45°C, and the kiln is taken out.

[0071] 4) Detect...

Embodiment 2

[0073] 1) Saw rubber wood logs into natural boards and imperial standard lumber as raw materials for the production of solid wood furniture. The thickness of natural boards is 2.5cm, 3.5cm, length 2m, the width of the small head is greater than 10cm, and the thickness of imperial standard lumber is 2.5cm cm, 3.5cm, plate length 1-1.3m, plate width less than 10.5cm;

[0074] 2) Stack the plates and counterweight them, and dry them in air;

[0075] 3) Put the wood into a high-temperature hydrothermal treatment kiln, start heating, and feed steam. When the temperature is below 95°C, keep the dry bulb and wet bulb warming up synchronously. When the temperature of the dry bulb rises to 121°C, keep heating but stop feeding steam The air window is slightly opened, so that the excess moisture released by the wood can be dissipated naturally through the gap of the exhaust window. The moisture content of the wood is reduced to 35%, and the temperature is reduced to 115°C. After the mois...

Embodiment 3

[0078] 1) Saw rubber wood logs into natural boards and imperial standard timbers as raw materials for the production of solid wood furniture. The thickness of natural boards is 4.5cm, 5.5cm, length 2m, the width of the small end is greater than 12cm, and the thickness of imperial standard timbers is 4.5cm. cm, 5.5cm, plate length 1-1.3m, plate width less than 10.5cm;

[0079] 2) Stack the plates and counterweight them, and dry them in air;

[0080] 3) Put the wood into a high-temperature hydrothermal treatment kiln, start heating, and feed steam. When the temperature is below 95°C, keep the dry bulb and wet bulb warming up synchronously. When the temperature of the dry bulb rises to 117°C, keep heating but stop feeding steam The air window is slightly opened, so that the excess moisture released by the wood can be naturally dissipated through the gap of the exhaust window. The moisture content of the wood is reduced to 40%, and the temperature is reduced to 110°C. After the mo...

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Abstract

The invention belongs to the technical field of wood processing, and relates to a production method capable of preventing rubber tree wood flour from being corroded by moths through a physical method. Raw rubber wood is sawed into battens or blanks which are then stacked and subjected to weight adding and air drying, then the battens or blanks are placed in a high-temperature hydro-thermal treatment kiln and heated, steam is led into the kiln, and the wood is heated in the humidity environment that the temperature of dry balls and the temperature of wet balls are increased simultaneously; after the temperature of the dry balls reaches 95-137 DEG C, heating continues but introduction of steam is stopped; the temperature of 95-137 DEG C is maintained for 1-4 days, and after the wood moisture content is lower than 15%, the temperature is lowered to 70-80 DEG C, and humidity-regulating balance treatment is conducted till the wood moisture content is 8-12%; and when the kiln temperature is lower than 45 DEG C, the wood is discharged out of the kiln. According to the production technology capable of preventing the rubber tree wood flour from being corroded by moths through the physical method, rubber is processed through the high-temperature hydro-thermal steam within the specific temperature range, nutrients in the raw rubber wood are degraded, and the moth preventing effect is achieved without chemical preservatives.

Description

technical field [0001] The invention belongs to the technical field of wood processing, and relates to a production method capable of preventing rubber tree timber from being eaten by powder beetles, in particular to a method of using physical methods to perform high-temperature hydrothermal treatment on rubber wood logs and wet sawn timber to produce commercial sawn timber, and to prevent mealy beetle eaters production method. The rubber wood produced by the invention has the characteristics of anti-powder beetle, stable size, no use of any chemical agent, and environmental protection of the board. Background technique [0002] Rubber trees (Hevea brasiliensis) are widely planted in southern my country and Southeast Asia, and more than 10 million cubic meters of rubber trees are produced each year due to regeneration. Rubberwood is a diffuse-porous wood that is easy to process and has a pleasing texture. It is currently widely used to make wood products such as furniture, ...

Claims

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Application Information

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IPC IPC(8): B27K5/00
CPCB27K5/001B27K2240/20
Inventor 韦兆玖李家宁李冠君李彤彤李民李晓文秦韶山蒋汇川陆全济马心梁淑云谢贵水罗微黄华孙
Owner RUBBER RES INST CHINESE ACADEMY OF TROPICAL AGRI SCI
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