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Medium-temperature heat treatment method for floor wood

A technology of warm heat treatment and wood, which is applied in the direction of wood drying, lighting and heating equipment, heating to dry solid materials, etc., and can solve the problems such as the moisture content should not be too low, rib grain, etc.

Inactive Publication Date: 2021-05-28
DALIAN SHENGYU TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems existing in the prior art, the present invention provides a method for warm-heating of floor wood, which not only needs to solve the problem of rib pattern caused by moisture absorption or moisture drainage of solid wood composite floor, but also guarantees the moisture in the wood. The moisture content should not be too low to prevent the wood from drying out or losing its original elasticity and fragrance

Method used

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  • Medium-temperature heat treatment method for floor wood
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  • Medium-temperature heat treatment method for floor wood

Examples

Experimental program
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Effect test

Embodiment 1

[0020] combine Figure 1 to Figure 3 , a method for moderate heat treatment of floor wood, comprising the following steps:

[0021] (1) Wood wool is placed on the pallet, dried in an infrared drying kiln for 10 days;

[0022] (2) Preheat the vacuum drying kiln at 55°C for 6 hours, evacuate, keep the pressure in the kiln at 20KPa, put the wood into the vacuum drying kiln; use the gradient heating method to dry, and after the moisture content of the wood reaches 30%, heat up to 58°C; when the wood moisture content reaches 20%, raise the temperature to 65°C; when the wood moisture content reaches 17%, the temperature rises to 72°C; when the wood moisture content reaches 14%, maintain the temperature at 75°C; After reaching 12%, the temperature is maintained at 77°C for 12 hours; finally, the temperature is maintained at 78°C for 24 hours;

[0023] (3) Gradient cooling is carried out at a rate of 2 °C / h. When the temperature is lowered to 40 °C, after leaving the kiln, it is kep...

Embodiment 2

[0027] The floor made of the medium-temperature heat-treated wood processed by the method in Example 1 and the ordinary wood without medium-temperature heat treatment is respectively in the environment where the relative air humidity is 0, 30%, 60% and 90%. After being treated for 120 hours at a temperature of 30°C, the change of moisture content in the wood was detected; the detection results are shown in Table 1.

[0028] Table 1 Variation of wood moisture content

[0029]

[0030] It can be seen from the above table that the water absorption rate of untreated wood is higher than that of wood treated at medium temperature, and it is easy to absorb moisture and roll up, and ribs appear.

Embodiment 3

[0032] The floor made of the middle-temperature heat-treated wood processed by the method in Example 1 and the common wood without the middle-temperature heat treatment is respectively in the environment where the relative air humidity is 0, 30%, 60% and 90%. After being treated at a temperature of 30° C. for 120 hours, the change of the floor width was detected, and the results are shown in Table 2.

[0033] Table 2 Floor Width Variations

[0034]

[0035] It can be seen from the above table that after the floor has been treated at medium temperature, when the air humidity is 60% (common humidity in summer), the change in width of the floor is very small by 1.55mm, and it will not cause the rib pattern problem of moisture absorption and moisture discharge .

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Abstract

The invention discloses a medium-temperature heat treatment method for floor wood, and belongs to the field of drying of wood boards and wood. According to the method, a vacuum and microwave drying kiln is adopted for medium-temperature heat treatment, so that the water content of the treated wood is between the water content of carbonized wood and the water content of common wood; and according to the wood treated through the method provided by the invention, the high moisture absorption rate of the common wood can be restrained, and the problem that carbonized wood is prone to cracking and inelastic after being extremely dried can be solved. The wood treated by the method is purely natural, purely green and pollution-free. In the whole treated process, the wood only makes contact with water vapor and hot air, and no chemical reagent is added, so that the natural essence of the wood is kept. Meanwhile, the wood has good environmental stability and corrosion resistance and is not easily influenced by the surrounding environment.

Description

technical field [0001] The invention relates to the field of drying plank wood, in particular to a method for mesothermal treatment of floor wood. Background technique [0002] The world today is facing environmental protection and ecological problems brought about by the dwindling forest resources. my country's forest resources are scarce, and the current per capita forest area is only one-sixth of the world's level, and the comprehensive utilization rate of wood is only half of that of developed countries. At the same time, with the rapid development of my country's economy and the improvement of people's living standards and living conditions, people's demand for wooden furniture, decorative materials and other wooden products and even wooden buildings has increased year by year. Therefore, rational use of limited timber resources is a severe task facing our country. [0003] Solid wood flooring is a ground decoration material formed by drying and processing natural woo...

Claims

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Application Information

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IPC IPC(8): F26B3/30F26B5/04F26B3/347
CPCF26B3/30F26B5/04F26B3/347F26B2210/16
Inventor 韩雨
Owner DALIAN SHENGYU TECH DEV CO LTD
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