WO2016086657A1

WO2016086657A1 - Method for compacting softwood into hardwood

Info

Publication number: WO2016086657A1
Application number: PCT/CN2015/083202
Authority: WO
Inventors: 王凯
Original assignee: 王凯
Priority date: 2014-12-02
Filing date: 2015-07-02
Publication date: 2016-06-09
Also published as: CN104354200B; JP6321288B2; JP2017533114A; CN104354200A

Abstract

The present invention relates to a method for compacting a softwood into a hardwood, said method comprising the following steps: at a certain temperature, a certain pressure is applied to a softwood, and high-temperature high-pressure treatment is performed; at a certain temperature, a certain pressure is applied to the high-temperature high-pressure treated softwood, and continued pressure treatment is performed; at a certain temperature, reduced-pressure treatment is performed on the continued pressure treated softwood; the preparation method provided by the present invention is simple; by means of the described steps, a softwood can be turned into a hardwood that is a robust material having high strength, high resistance to wear, and high endurance.

Description

Method of applying cork compaction to hardwood

Technical field

The invention relates to a method for preparing hardwood, in particular to a method for applying cork compaction into hardwood.

Background technique

Hard wood is solid but slow to grow, and the wooden structure is fine and compact. Generally, such wood has a large specific gravity. These woods are hard and fine, the color is gorgeous, the patterns are beautiful and delicate, they are the superior materials for furniture and wood products, so the price is very expensive, and the cork is composed of many flat cells arranged by radiation. The cell cavity often contains resin and tannin compounds. The cells are filled with air. The texture is soft, flexible, and light in weight, but the growth cycle is short. The price is lower than the price of hardwood. It is generally used for furniture and wood products. Excipients or core materials are used. The pattern of cork is rough and bold, and it has a feeling of landscape painting. However, due to the wood defects, wood products manufacturers often use cork to produce products such as furniture and wood products. Even if the price of softwood products is low and the pattern is rough and arrogant, it will not be favored by the market. The main reason is that The texture of the wood is soft and soft, and it can only be used as a supporting role for hardwood. The added value is very low, the utilization value is not high, and the economic benefits are not good. Thereby fading out the consumer's vision.

Therefore, it is urgent to develop a processing method for soft wood with soft texture, low strength, low density and low hardness, which is changed into a hard material with high hardness, high wear resistance and high strength.

In view of the above problems, the prior art discloses some wood processing methods, for example, CN1876343 discloses a high temperature hydrothermal treatment method for wood; CN102431067 discloses a pretreatment process for atmospheric pressure superheated steam for improving the dimensional stability of wood; CN102225566 discloses A method for producing high-temperature heat-treated wood, which is to improve the stability, hygroscopicity and corrosion resistance of the wood itself by means of high-temperature steam, etc., which does not substantially change the characteristics of the cork, making it a tough material. Hardwood with high strength and high wear resistance.

Summary of the invention

In order to solve the above technical problems and utilize the full utilization of cork, the present invention has developed a method for applying cork compaction into hardwood, which can fully improve the softness of the softwood, the strength of the soft wood, and the density from the cell structure inside the cork. Low and low hardness defects make it a hard material with high strength, high wear resistance and high strength.

Technical solution

The specific technical solutions of the present invention are as follows:

The invention provides a method for applying softwood compaction into hardwood, the method comprising the following steps:

a. High temperature and high pressure treatment: applying a certain pressure to the cork at a certain temperature for high temperature and high pressure treatment;

b. Continuous pressure treatment: the cork after high temperature and high pressure treatment is applied with a certain pressure at a certain temperature to carry out continuous pressure treatment;

c. High temperature decompression treatment: the cork after the continuous pressure treatment is subjected to a reduced pressure treatment at a certain temperature;

d. Cooling and constant pressure health treatment: The cork after high temperature and pressure reduction treatment is cooled under constant pressure.

The invention adopts high temperature and high pressure treatment on the cork, so that the honeycomb structure in the cork begins to change the flat structure. After high temperature and high pressure treatment, the specific gravity increases from 70 kg/m ³ to 450 kg/m ³ , and the stability and energy thereof The indicators after the test were significantly improved. At the same time, under the observation of high power microscope, it can be clearly seen that the internal cell structure of the wood before and after the high temperature and high pressure treatment has changed dramatically, from the honeycomb structure before treatment to the solid core after treatment. Tissue structure. The invention further applies the continuous pressure treatment to the soft wood treated by high temperature and high pressure, and the tissue structure of the wood cell is subjected to strong pressure, and the cellular state structure of the remaining part of the cork cell and the flat state structure after the high temperature and high pressure treatment are turned into linear strips. The shape of the shape increases the specific gravity of the cork to about 700 kg/m ³ . Further, the corrugated cork is subjected to high-temperature decompression treatment, and the moisture content of the prepared cork is controlled within a range of 5% to 7%, thereby providing anticorrosive performance of the prepared hardwood. Further processing the cork after high-temperature decompression treatment can naturally restore the linear strip state inside the treated cork cells to a flat structure state, and maintain the rich elasticity of the wood.

The preparation method provided by the invention is simple, and the soft wood can be turned into a hard material with high strength, high wear resistance and high strength by the above several steps.

The softwood referred to in the present invention is a softwood material such as pine, fir, eucalyptus, nanmu and eucalyptus.

Further improvement, the cork provided by the invention is pretreated and then subjected to high temperature and high pressure treatment; the cork pretreatment is to process the cork into a sheet, dry, control the moisture content of the sheet, and position the dried sheet. Sanding treatment.

According to a further improvement, the method for applying cork compaction into hardwood provided by the present invention comprises the following steps:

a) Cork pretreatment: processing cork into sheet, drying, controlling the moisture content of the sheet, and drying the sheet for positioning sanding;

b) high temperature and high pressure treatment: applying pre-treated cork at a certain temperature, applying a certain pressure, and performing high temperature and high pressure treatment in a closed space;

c) continuous pressure treatment: the cork after high temperature and high pressure treatment, under a certain temperature, apply a certain pressure, and continue to pressurize in a confined space;

d) high temperature decompression treatment: the cork after the continuous pressure treatment is subjected to a reduced pressure treatment in a closed space at a certain temperature;

e) Cooling and constant-pressure health treatment: The cork after high-temperature decompression treatment is cooled in a confined space under constant pressure.

The method for applying cork compaction into hardwood provided by the present invention is a treatment such as high temperature, high pressure, and continuous pressure in a closed space. In a confined space, it is possible to remove the resin, tannin compounds and impurities in the cork cells by using the moisture in the cork itself without using steam, thereby increasing the specific gravity and hardness of the hardwood. The hardwood has a specific gravity of 800-900 kg/m ³ and a hardness of 9H. Moreover, according to the above preparation process, the cell wall damage degree can be controlled to about 30%, so that no rebound phenomenon occurs during the preparation process.

Further improvement, the pretreated softwood is subjected to steam preheating and pressure treatment, and then subjected to high temperature and high pressure treatment; the method comprises the following steps:

1) Cork pretreatment: processing cork into sheet, drying, controlling the moisture content of the sheet, and drying the sheet for positioning sanding;

2) Steam preheating and pressure treatment: steam entering a space of pre-treated cork for a certain time and temperature;

3) High temperature and high pressure treatment: the cork after steam preheating and pressure treatment is applied with a certain pressure at a certain temperature, and the high temperature and high pressure treatment is carried out under the condition of intermittent or continuous steam introduction, and the time for introducing steam is not more than High temperature and high pressure treatment time;

4) Continuous pressure treatment: the cork after high temperature and high pressure treatment is applied with a certain pressure at a certain temperature, and the continuous pressure treatment is carried out under the condition of intermittent or continuous steam introduction, and the time of steam introduction is not greater than the continuous pressure treatment. time;

5) High-temperature decompression treatment: the cork after the continuous pressure treatment is subjected to a reduced pressure treatment at a certain temperature;

6) Cooling and constant pressure health treatment: The cork after high temperature and pressure reduction treatment is cooled under constant pressure.

In addition, in the method for applying cork compaction to hardwood provided by the present invention, the steps of high temperature, high pressure, and continuous pressure treatment may not be performed in a sealed space, and in order to exclude components such as resins, tannin compounds, and impurities in the cork cells, The invention adopts steam preheating and pressure curing treatment on the cork, and steam is introduced into the high temperature and high pressure and the continuous pressure treatment process. Since the cork observed under the microscope is composed of thousands of dead cells like a honeycomb, the cells are filled with air, forming a closed airbag, which is used to reduce the contraction of the cells and increase the pressure inside the cells. The vigor of the cells, thereby improving the texture of the cork, the present invention is subjected to steam preheating and pressure treatment of the cork; after the steam preheating and curing the cork, the cell shrinkage becomes smaller, and the intracellular pressure rises and the cells shrink. At the same time, it retains the function of the original cells and revives the cells. In the process of high temperature and high pressure treatment, steam is introduced, the purpose of which is to prevent the structural molecules inside the cork from being quickly cracked and broken, but the aerobic type of steam is injected into the inner nest cells of the cork by pressure, and The original air, resin and tannin compounds in the internal structure are evenly discharged. Steam is introduced during the continuous pressure treatment, so that the resin, tannin compound and air inside the cork are discharged 90%, and the high-temperature steam is introduced while pressurizing, so that the cork is wetted while being wetted, and is eliminated. The role of pollutant impurities.

Further improvement, during the high temperature and high pressure treatment, the temperature is 120-150 ° C, the pressure is 15-35 kg / cm ² , and the high temperature and high pressure treatment time is 3-10 min; preferably, during the continuous pressure treatment process, The temperature is 160-190 ° C, the pressure is 15-35 kg/cm ² , the pressing speed is 50-80 mm/min, and the time of the continuous pressure treatment is 4-10 min; preferably, the temperature during the high-temperature decompression treatment, the temperature 150-200 ° C, high temperature decompression treatment time is 2-10min, the pressure is reduced to 5-15 kg / cm ² ; preferably, during the cooling and constant pressure health treatment process, the time of cooling and constant pressure health treatment is 2-7min, the constant pressure is the standard atmospheric pressure, and the temperature is lowered to room temperature.

Further improvement, in the steam preheating pressure treatment process, the temperature of the steam is 120-200 ° C, and the steam is introduced for 2-10 min; preferably, the steam is introduced during the high temperature and high pressure treatment The time is 3-10 min, and the temperature of the steam is 140-170 ° C; preferably, during the continuous pressure treatment, the steam is introduced for 4-10 min, and the steam is introduced at a temperature of 100-150 ° C.

With further improvement, the moisture content of the control sheet is 5%-7%. The method for applying cork compaction into hardwood provided by the present invention is carried out in a confined space, and the moisture content of the sheet needs to be controlled within a range of 5% to 7%. If the water content is too low, the resin in the cork cell cannot be The tannin compound is excluded. If the moisture content is too high, the cork is easily cracked, which affects the quality of the prepared hardwood.

With further improvement, the moisture content of the control sheet is 12%-17%. The method for applying cork compaction into hardwood provided by the present invention is carried out in a non-closed space, and it is required to control the moisture content of the sheet in the range of 12%-17%, and the control is within this range because the preparation process is passed The method of steaming removes the resin and the tannin compound. If the moisture content of the sheet is too low, the cost of preparation is increased. At the same time, the purpose of steaming is to replace the water and steam in the cork with the water content. High is not conducive to the elimination of resins and tannin compounds.

The high temperature and high pressure treatment and the continuous pressure treatment step also include introducing steam of different colors and/or steam of different odors.

The invention can change the surface of the wood into various colors during the process of changing the cork into hardwood by introducing steam with different colors and odors, or the wood can emit various aromas; for example; Special flavors such as rosewood, rosewood and various redwoods.

Beneficial effect

The beneficial effects of the present invention are as follows:

1. After the above-mentioned softwood compaction is changed into a hardwood preparation method, the cork is changed into a hardwood, and the inner cell of the cork can be changed into a linear strip state, so that the treated cork has the characteristics and stability of the hardwood;

2. After the above method of preparing cork compaction into hardwood, the air, resin, tannin compound and other impurities inside the cork can be excluded, so that the treated cork has the tough texture of hardwood;

3. The existing wood products must be painted after processing, otherwise the wood holes on the surface of the wood will be deformed after encountering moisture, and the hardwood obtained after the softwood compaction is changed into the hardwood preparation method, without any brown eyes. And wood holes, so not afraid of boiling and water intrusion;

4. After the softwood compaction is converted into hardwood, the obtained hardwood is boiled at high temperature for 20 minutes, the transverse wetness is zero, the longitudinal wetness is 0.2%, and the hardness reaches 9H. The shrinkage rate can reach 15-30%, and the water content can reach 5-7%;

5. At the same time, when steam is introduced, the hardwood can be changed into a variety of colors, patterns and smells of wood;

6. The method for preparing softwood compacted into hardwood provided by the invention has low cost and no pollution, and the prepared hardwood is resistant to high temperature and water, boiled, hard and wearable, has good surface gloss, and requires no painting, painting and the like when manufacturing wood products. , is a green product.

Embodiments of the invention

Example 1: Method for applying cork compaction to hardwood

The method comprises the following steps:

Example 2: Method of applying cork compaction to hardwood

The method comprises the following steps:

Example 3 Method for applying cork compaction to hardwood

The method comprises the following steps:

a. high temperature and high pressure treatment: the cork is applied at a temperature of 130 ° C, a pressure of 30 kg / cm ² , high temperature and high pressure treatment, high temperature and high pressure treatment time is 5 min;

b. Continuous pressure treatment: the cork after high temperature and high pressure treatment is applied at a temperature of 170 ° C, a pressure of 30 kg / cm ² , a pressurization speed of 65 mm / min, and a continuous pressure treatment, the time of the continuous pressure treatment is 5 min ;

c. High temperature decompression treatment: the cork after continuous pressure treatment is treated at a temperature of 170 ° C for 3 min under reduced pressure to bring the pressure to 10 kg/cm ² ;

d. Cooling and constant pressure health treatment: The cork after high temperature and pressure reduction treatment is cooled under standard atmospheric pressure for 3 minutes to lower the temperature to room temperature.

Example 4 Method for applying cork compaction to hardwood

The method comprises the following steps:

a) Cork pretreatment: the cork is processed into a sheet, dried, and the moisture content of the sheet is controlled to 5%, and the dried sheet is subjected to positioning sanding treatment;

b) high temperature and high pressure treatment: the pretreated cork is applied at a pressure of 30 kg/cm ² at 125 ° C, and subjected to high temperature and high pressure treatment in a closed space, and the time for high temperature and high pressure treatment is 4 min;

c) Continuous pressure treatment: the cork subjected to high temperature and high pressure treatment is subjected to a pressure of 30 kg/cm ² at a temperature of 170 ° C, a pressurization speed of 65 mm/min, and a continuous pressure treatment in a closed space, which requires treatment time. 5 min;

Example 5 Method for applying softwood compaction to hardwood

The method comprises the following steps:

a) Cork pretreatment: the cork is processed into a sheet, dried, and the moisture content of the sheet is controlled to 6%, and the dried sheet is subjected to positioning sanding treatment;

b) high temperature and high pressure treatment: the pretreated cork is applied at a pressure of 25 kg/cm ² at 130 ° C, and subjected to high temperature and high pressure treatment in a closed space, and the time for high temperature and high pressure treatment is 6 min;

c) Continuous pressure treatment: the cork subjected to high temperature and high pressure treatment is subjected to a pressure of 25 kg/cm ² at a temperature of 165 ° C, a pressurization speed of 70 mm/min, and a continuous pressure treatment in a closed space, which requires treatment time. 5 min;

d) high temperature decompression treatment: the cork after continuous pressure treatment is treated at a temperature of 175 ° C for 3 min under reduced pressure to bring the pressure to 7 kg / cm ² ;

Example 6 Method for applying softwood compaction to hardwood

The method comprises the following steps:

b) high temperature and high pressure treatment: the pretreated cork is applied at a pressure of 25 kg/cm ² at 120 ° C, and subjected to high temperature and high pressure treatment in a closed space, and the time of high temperature and high pressure treatment is 6 min;

c) Continuous pressure treatment: the cork subjected to high temperature and high pressure treatment is subjected to a pressure of 25 kg/cm ² at a temperature of 180 ° C, a pressurization speed of 70 mm/min, and a continuous pressure treatment in a closed space, which requires treatment time. 6min;

d) high temperature decompression treatment: the cork after continuous pressure treatment is treated at a temperature of 180 ° C for 5 min under reduced pressure to bring the pressure to 5 kg / cm ² ;

e) Cooling and constant pressure health treatment: The cork after high temperature and pressure reduction treatment is cooled under standard atmospheric pressure for 5 minutes to lower the temperature to room temperature.

Example 7 Method for applying softwood compaction to hardwood

The method comprises the following steps:

a) Cork pretreatment: the cork is processed into a sheet, dried, and the moisture content of the sheet is controlled to 7%, and the dried sheet is subjected to positioning sanding treatment;

b) high temperature and high pressure treatment: the pretreated cork is applied at a pressure of 15 kg/cm ² at 150 ° C, and subjected to high temperature and high pressure treatment in a closed space, and the time for high temperature and high pressure treatment is 10 min;

c) Continuous pressure treatment: the cork subjected to high temperature and high pressure treatment is subjected to a pressure of 35 kg/cm ² at a temperature of 160 ° C, a pressurization speed of 50 mm/min, and a continuous pressure treatment in a closed space, which requires treatment time. 10 min;

d) high temperature decompression treatment: the cork after continuous pressure treatment is treated at a temperature of 150 ° C for 10 min under reduced pressure to bring the pressure to 15 kg / cm ² ;

e) Cooling and constant pressure health treatment: The cork after high temperature and pressure reduction treatment is cooled under standard atmospheric pressure for 7 minutes to lower the temperature to room temperature.

Example 8 Method for applying softwood compaction to hardwood

The method comprises the following steps:

b) high temperature and high pressure treatment: the pretreated softwood is applied at a pressure of 35 kg/cm ² at 135 ° C, and subjected to high temperature and high pressure treatment in a closed space, and the time for high temperature and high pressure treatment is 3 min;

c) Continuous pressure treatment: the cork after high temperature and high pressure treatment is subjected to a pressure of 20 kg/cm ² at a temperature of 175 ° C, a pressurization speed of 75 mm/min, and a continuous pressure treatment in a closed space, which requires treatment time. 5 min;

d) high temperature decompression treatment: the cork after continuous pressure treatment is treated at a temperature of 170 ° C for 3 min under reduced pressure to bring the pressure to 10 kg / cm ² ;

e) cooling and constant pressure health treatment: the cork after high temperature decompression treatment is cooled under standard atmospheric pressure for 3 minutes to lower the temperature to room temperature;

The softwood referred to is fir.

Example 9 Method for applying cork compaction to hardwood

The method comprises the following steps:

1) Cork pretreatment: the cork is processed into a sheet and dried, and the moisture content of the sheet is controlled to be 15%, and the dried sheet is subjected to positioning sanding treatment;

3) High temperature and high pressure treatment: the cork subjected to steam preheating and pressure treatment is applied at a temperature of 125 ° C, a pressure of 30 kg / cm ² is applied, and high temperature and high pressure treatment is carried out under the condition of passing steam, high temperature and high pressure treatment. The time is 4 min, the steaming time is 3 min, and the steaming temperature is 145 ° C;

4) Continuous pressure treatment: the cork subjected to high temperature and high pressure treatment is subjected to a pressure of 20 kg/cm ² at a temperature of 185 ° C, a pressurization speed of 75 mm/min, and a continuous pressure is performed under the condition that steam is intermittently introduced. Treatment, the time of continuous pressure treatment is 5 min, the time of steaming is 4 min, and the temperature of steaming is 120 ° C;

Example 10 Method for applying cork compaction to hardwood

The method comprises the following steps:

1) Cork pretreatment: the cork is processed into a sheet and dried, and the moisture content of the sheet is controlled to be 16%, and the dried sheet is subjected to positioning sanding treatment;

2) Steam preheating and pressure treatment: steam is introduced into the space of the pretreated cork, and the steam is introduced for 4 minutes;

3) High temperature and high pressure treatment: the cork after steam preheating and pressure treatment is applied at a temperature of 140 ° C, a pressure of 20 kg / cm ² is applied, and high temperature and high pressure treatment is carried out under continuous steaming conditions, high temperature and high pressure treatment. The time is 6 min, the steaming time is 6 min, and the steaming temperature is 150 ° C;

4) Continuous pressure treatment: the cork subjected to high temperature and high pressure treatment is subjected to a pressure of 25 kg/cm ² at a temperature of 175 ° C, a pressurization speed of 60 mm/min, and a continuous pressure under continuous steaming conditions. Treatment, the time of continuous pressure treatment is 6min, the time of steaming is 6min, and the temperature of steaming is 130°C;

Example 11 Method for applying softwood compaction to hardwood

The method comprises the following steps:

1) Cork pretreatment: the cork is processed into a sheet and dried, and the moisture content of the sheet is controlled to be 13%, and the dried sheet is subjected to positioning sanding treatment;

2) Steam preheating and pressure treatment: steam is introduced into the space of the pretreated cork, and the steam is introduced for 5 minutes;

3) High temperature and high pressure treatment: the cork subjected to steam preheating and pressure treatment is applied at a temperature of 130 ° C, a pressure of 15 kg / cm ² is applied, and high temperature and high pressure treatment is carried out under continuous steaming conditions, high temperature and high pressure treatment. The time is 5 min, the steaming time is 5 min, and the steaming temperature is 160 ° C;

4) Continuous pressure treatment: the cork subjected to high temperature and high pressure treatment is subjected to a pressure of 20 kg/cm ² at a temperature of 180 ° C, a pressurization speed of 70 mm/min, and a continuous pressure under continuous steaming conditions. Treatment, the time of the continuous pressure treatment is 7 min, the time of steam introduction is 7 min, and the temperature of steam introduction is 140 ° C;

5) High-temperature decompression treatment: the cork after continuous pressure treatment is treated under reduced pressure for 4 min at a temperature of 160 ° C to make the pressure reach 8 kg/cm ² ;

Example 12 Method for applying cork compaction to hardwood

The method comprises the following steps:

1) Cork pretreatment: the cork is processed into a plate and dried, and the moisture content of the plate is controlled to be 12%, and the dried plate is subjected to positioning sanding treatment;

2) Steam preheating and pressure treatment: steam is introduced into the space of the pretreated cork to 150 ° C, and the steaming time is 6 min;

3) High temperature and high pressure treatment: the cork after steam preheating and pressure treatment is applied at a temperature of 125 ° C, a pressure of 20 kg / cm ² is applied, and high temperature and high pressure treatment is carried out under continuous steaming conditions, high temperature and high pressure treatment. The time is 7 minutes, and the time of steaming is not greater than the time of high temperature and high pressure treatment;

4) Continuous pressure treatment: the cork subjected to high temperature and high pressure treatment is subjected to a pressure of 15 kg/cm ² at a temperature of 190 ° C, a pressurization speed of 80 mm/min, and a continuous pressure under continuous steaming conditions. The treatment, the time of the continuous pressure treatment is 4 minutes, and the time of steaming is not greater than the time of the continuous pressure treatment;

5) High-temperature decompression treatment: the cork after continuous pressure treatment is treated under reduced pressure for 7 min at a temperature of 160 ° C to bring the pressure to 7 kg/cm ² ;

6) Cooling and constant pressure health treatment: The cork after high temperature and pressure reduction treatment is cooled under standard atmospheric pressure for 2 minutes to lower the temperature to room temperature.

Example 13 Method for applying cork compaction to hardwood

The method comprises the following steps:

1) Cork pretreatment: the cork is processed into a sheet and dried, and the moisture content of the sheet is controlled to be 17%, and the dried sheet is subjected to positioning sanding treatment;

2) Steam preheating and pressure treatment: steaming at 200 ° C into the space of the pretreated cork, the steaming time is 2 min;

3) High temperature and high pressure treatment: the cork after steam preheating and pressure treatment is applied at a temperature of 150 ° C, a pressure of 35 kg / cm ² is applied, and high temperature and high pressure treatment is carried out under continuous steaming conditions, high temperature and high pressure treatment. The time is 4 min, the steaming time is 4 min, and the steaming temperature is 170 ° C;

4) Continuous pressure treatment: the cork subjected to high temperature and high pressure treatment is subjected to a pressure of 20 kg/cm ² at a temperature of 175 ° C, a pressurization speed of 60 mm/min, and a continuous pressure under continuous steaming conditions. Treatment, the time of the continuous pressure treatment is 7 min, the time of steam introduction is 7 min, and the temperature of steam introduction is 150 ° C;

5) High-temperature decompression treatment: the cork after continuous pressure treatment is treated under reduced pressure at a temperature of 200 ° C for 2 min to bring the pressure to 9 kg / cm ² ;

Example 14 Method for applying softwood compaction to hardwood

The method comprises the following steps:

1) Cork pretreatment: the cork is processed into a sheet and dried, and the moisture content of the sheet is controlled to be 14%, and the dried sheet is subjected to positioning sanding treatment;

2) steam preheating and pressure treatment: 160 ° C steam is introduced into the space of the pretreated cork, and the steaming time is 10 min;

3) High temperature and high pressure treatment: the cork subjected to steam preheating and pressure treatment is applied at a temperature of 135 ° C, a pressure of 25 kg / cm ² is applied, and high temperature and high pressure treatment is carried out under continuous steaming conditions, high temperature and high pressure treatment. The time is 3 min, the steaming time is 3 min, and the steaming temperature is 150 ° C;

4) Continuous pressure treatment: the cork subjected to high temperature and high pressure treatment is subjected to a pressure of 25 kg/cm ² at a temperature of 160 ° C, a pressurization speed of 80 mm/min, and a continuous pressure under continuous steaming conditions. Treatment, the time of continuous pressure treatment is 5 min, the time of steam introduction is 5 min, and the temperature of steam introduction is 100 ° C;

5) High-temperature decompression treatment: the cork after continuous pressure treatment is treated under reduced pressure at 190 ° C for 4 min to bring the pressure to 6 kg / cm ² ;

6) Cooling and constant-pressure health treatment: The cork after high-temperature decompression treatment is cooled under standard atmospheric pressure for 4 minutes to lower the temperature to room temperature.

Example 15 Method for applying cork compaction to hardwood

The method comprises the following steps:

2) Steam preheating and pressure treatment: steam is introduced into the space of the pretreated cork, and the steam is introduced for 3 minutes;

3) High temperature and high pressure treatment: the cork after steam preheating and pressure treatment is applied at a temperature of 130 ° C, a pressure of 30 kg / cm ² is applied, and high temperature and high pressure treatment is carried out under continuous steaming conditions, high temperature and high pressure treatment. The time is 10 min, the steaming time is 10 min, and the steaming temperature is 140 ° C;

4) Continuous pressure treatment: the cork subjected to high temperature and high pressure treatment is subjected to a pressure of 30 kg/cm ² at a temperature of 165 ° C, a pressurization speed of 65 mm/min, and a continuous pressure under continuous steaming conditions. Treatment, the time of the continuous pressure treatment is 10 min, the time of steam introduction is 10 min, and the temperature of steam introduction is 120 ° C;

5) High-temperature decompression treatment: the cork after continuous pressure treatment is treated under reduced pressure at a temperature of 175 ° C for 3 min to bring the pressure to 10 kg / cm ² ;

6) Cooling and constant pressure health treatment: the cork after high temperature decompression treatment is cooled under standard atmospheric pressure for 3 minutes to lower the temperature to room temperature;

The softwood referred to is fir.

Experimental Example 1 Investigation of various parameters of high temperature and high pressure treatment

The time of high temperature and high pressure treatment was designed to be 0 min, 2 min, 3 min, 6 min, 10 min and 12 min, 6 levels, and the remaining steps were prepared according to the method of Example 8, and the prepared hardwood specific gravity, resin content, tannin compound content and honeycomb were prepared. The state organization structure content was investigated, and the results of the investigation are shown in Table 1.

The temperature of high temperature and high pressure treatment was designed to be 10 levels of 110 ° C, 120 ° C, 135 ° C, 150 ° C and 160 ° C, and the remaining steps were prepared according to the method of Example 8, and the prepared hardwood specific gravity, resin content, and tannin compound were prepared. The content of the content and the state of the honeycomb structure were investigated. The results are shown in Table 1.

The pressure of the high temperature and high pressure treatment was designed to be 10 kg/cm ² , 15 kg/cm ² , 25 kg/cm ² , 35 kg/cm ² and 45 kg/cm ² , 5 levels, and the remaining steps were as follows according to the method of Example 8. Preparation, the prepared hardwood specific gravity, resin content, tannin compound content and cellular state structure content were investigated, the results of the investigation are shown in Table 1;

表1 高温高压处理各参数的考察结果 Table 1 High temperature and high pressure treatment

考察指标 Survey indicator		硬木比重（ kg/m Hardwood specific gravity (kg/m ³³ ） )	树脂含量（ % ） Resin content (%)	单宁化合物含量（ % ） Tannin compound content (%)	蜂窝状态组织结构含量（ % ） Cellular state structure content (%)
时间（ min ） Time ( min )	0 0	70 70	2.51 2.51	11.5 11.5	98 98
	2 2	360 360	1.88 1.88	9.2 9.2	87 87
	3 3	400 400	1.66 1.66	7.9 7.9	71 71
	6 6	423 423	1.31 1.31	6.1 6.1	63 63
	10 10	450 450	0.85 0.85	3.9 3.9	53 53
	12 12	455 455	0.83 0.83	3.8 3.8	51 51
温度（ ℃ ） Temperature ( °C )	110 110	340 340	1.94 1.94	9.8 9.8	83 83
	120 120	415 415	1.65 1.65	7.7 7.7	72 72
	135 135	433 433	1.24 1.24	5.8 5.8	62 62
	150 150	460 460	0.86 0.86	4.0 4.0	50 50
	160 160	462 462	0.85 0.85	4.0 4.0	50 50
压力（kg/cm²）Pressure (kg/cm ² )	10 10	356 356	2.01 2.01	10.2 10.2	85 85
	15 15	415 415	1.71 1.71	8.1 8.1	74 74
	25 25	437 437	1.29 1.29	6.0 6.0	65 65
	35 35	472 472	0.84 0.84	3.8 3.8	54 54
	45 45	480 480	0.84 0.84	3.7 3.7	52 52

It can be seen from the table that the time, temperature, and pressure during the high temperature and high pressure treatment have a significant effect on the specific gravity of the hardwood, the resin content, the content of the tannin compound, and the content of the honeycomb structure. Only when the time is controlled within 10 minutes, the temperature is Controlled at 150 ° C, the pressure is controlled at 35 kg / cm ² , the specific gravity of the wood can be increased to about 450 kg / m ³ at low cost and low consumption, and about 65% of the resin and tannin compounds in the cork can be excluded. 50% of the honeycomb structure in the raw material cork becomes a solid core-like structure; when the temperature, pressure and treatment time continue to rise, the input and output are not proportional.

Experimental Example 2 Investigation of various parameters of continuous pressure treatment

The time of the continuous pressure treatment was designed to be 0 min, 3 min, 4 min, 7 min, 10 min and 12 min, 6 levels, and the remaining steps were prepared according to the method of Example 8, and the prepared hardwood specific gravity, resin content, tannin compound content and honeycomb were prepared. The state organization structure content was investigated, and the results of the investigation are shown in Table 2;

The temperature of the continuous pressure treatment was designed to be 150 ° C, 160 ° C, 175 ° C, 190 ° C and 200 ° C, 5 levels, and the remaining steps were prepared according to the method of Example 8, and the prepared hardwood specific gravity, resin content, tannin compound The contents of the content and the state of the honeycomb structure were investigated. The results of the investigation are shown in Table 2;

The pressure of the continuous pressure treatment was designed to be 10 kg/cm ² , 15 kg/cm ² , 25 kg/cm ² , 35 kg/cm ² and 45 kg/cm ² , 5 levels, and the remaining steps were as follows according to the method of Example 8. Preparation, the prepared hardwood specific gravity, resin content, tannin compound content and cellular state structure content were investigated, the results of the investigation are shown in Table 2;

表2续压处理各参数的考察结果 Table 2 Continued Pressure Treatment Results of each parameter

考察指标 Survey indicator		硬木比重（ kg/m Hardwood specific gravity (kg/m ³³ ） )	树脂含量（ % ） Resin content (%)	单宁化合物含量（ % ） Tannin compound content (%)	蜂窝状态组织结构含量（ % ） Cellular state structure content (%)
时间（min） Time (min)	0 0	450 450	0.85 0.85	3.8 3.8	50 50
	3 3	520 520	0.66 0.66	2.4 2.4	45 45
	4 4	600 600	0.41 0.41	1.9 1.9	33 33
	7 7	640 640	0.22 0.22	0.8 0.8	24 twenty four
	10 10	700 700	0.05 0.05	0.08 0.08	13 13
	12 12	710 710	0 0	0 0	11 11
温度（ ℃ ） Temperature ( °C )	150 150	550 550	0.69 0.69	3.1 3.1	44 44
	160 160	620 620	0.45 0.45	2.2 2.2	32 32
	175 175	680 680	0.21 0.21	1.3 1.3	20 20
	190 190	720 720	0.06 0.06	0.1 0.1	9 9
	200 200	725 725	0 0	0 0	8 8
压力（kg/cm²）Pressure (kg/cm ² )	10 10	560 560	0.64 0.64	2.8 2.8	38 38
	15 15	610 610	0.39 0.39	2.1 2.1	29 29
	25 25	660 660	0.15 0.15	1.3 1.3	14 14
	35 35	710 710	0 0	0 0	5 5
	45 45	720 720	0 0	0 0	4 4

It can be seen from the table that the time, temperature and pressure of the continuous pressure treatment have a significant influence on the specific gravity of the hardwood, the resin content, the content of the tannin compound and the content of the honeycomb structure. Only when the time is controlled within 10 minutes, the temperature is controlled at 190. Within °C, the pressure is controlled within the range of 35 kg/cm ² to provide the specific gravity of the hardwood at low cost and low consumption, completely remove the resin and tannin compounds in the hardwood; and can largely honeycomb structure It becomes a linear strip structure; when temperature, pressure and treatment time continue to rise, input and output are not proportional.

Experimental Example 3 Investigation of Various Parameters in High Temperature Decompression Treatment

The time of high temperature decompression treatment was designed to be 0 min, 1 min, 2 min, 5 min, 10 min and 12 min, 6 levels, and the remaining steps were prepared according to the method of Example 8, and the moisture content of the prepared hardwood and the specific gravity of the hardwood were investigated. The results of the investigation are shown in Table 3;

The temperature of the high-temperature decompression treatment was designed to be 5 levels of 140 ° C, 150 ° C, 170 ° C, 200 ° C, and 210 ° C, and the remaining steps were prepared according to the method of Example 8, and the moisture content of the prepared hardwood and the specific gravity of the hardwood. Investigate, the results of the inspection are shown in Table 3;

表3高温减压处理各参数的考察结果 Table 3 Results of investigation of various parameters of high temperature and vacuum treatment

考察指标 Survey indicator	含水率（ % ） Moisture content (%)		硬木比重（ kg/m Hardwood specific gravity (kg/m ³³ ） )
时间（ min ） Time ( min )	0 0	24 twenty four	710 710
	1 1	12 12	780 780
	2 2	7 7	810 810
	5 5	6 6	850 850
	10 10	5 5	900 900
	12 12	5 5	910 910
温度（ ℃ ） Temperature ( °C )	140 140	15 15	730 730
	150 150	7 7	820 820
	170 170	6 6	860 860
	200 200	5 5	910 910
	210 210	5 5	910 910

5 When treated, the moisture content of the prepared hardwood is significantly improved, which results in poor corrosion resistance of the hardwood, and the specific gravity of the hardwood is still about 700 kg/m ³ ; when the high temperature decompression time is less than 3 min or the temperature is lower than 200 ° C The moisture content of hardwood is still high, and the specific gravity of hardwood is increased. With the increase of high temperature decompression time or the increase of temperature, the moisture content of hardwood is significantly reduced, the proportion of hardwood continues to increase; After 10 minutes or the temperature rises to 200 °C, continue to increase the time or temperature, the moisture content of the hardwood does not change, the proportion of hardwood does not change too much, but the preparation cost is increased; only when the high temperature decompression time Controlled at 2-10min, the temperature is controlled within the range of 150-200 °C, in order to obtain hardwood with appropriate moisture content, and the specific gravity of hardwood can reach 800-900 kg/m ³ ; continue to increase time and temperature, income and production It is not proportional.

Experimental Example 4 Investigation of steaming time and steam temperature during high temperature and high pressure treatment

The steaming time during the high temperature and high pressure treatment was designed to be 0 min, 2 min, 3 min, 6 min, 10 min and 12 min, 6 levels, and the remaining steps were prepared according to the method of Example 15 to prepare the resin in the internal structure of the hardwood. The content of tannin compounds was investigated, and the results of the investigation are shown in Table 4;

The temperature of the steam entering during the high temperature and high pressure treatment was designed to be 5 levels of 130 ° C, 140 ° C, 150 ° C, 170 ° C and 180 ° C, and the remaining steps were prepared according to the method of Example 15, and the internal structure of the prepared hardwood was prepared. The content of resin and tannin compound was investigated, and the results are shown in Table 4;

表4高温高压处理过程中通入蒸汽时间和蒸汽温度的考察结果 Table 4 Investigation results of steaming time and steam temperature during high temperature and high pressure treatment

考察指标 Survey indicator		树脂含量（ % ） Resin content (%)	单宁化合物含量（ % ） Tannin compound content (%)
时间（ min ） Time ( min )	0 0	2.03 2.03	10.2 10.2
	2 2	1.73 1.73	8.8 8.8
	3 3	1.57 1.57	7.9 7.9
	6 6	1.13 1.13	6.2 6.2
	10 10	0.78 0.78	4.1 4.1
	12 12	0.75 0.75	4.0 4.0
温度（ ℃ ） Temperature ( °C )	130 130	1.59 1.59	8.1 8.1
	140 140	1.41 1.41	6.7 6.7
	150 150	1.19 1.19	5.8 5.8
	170 170	0.76 0.76	4.0 4.0
	180 180	0.75 0.75	3.9 3.9

It can be seen from the table that in the process of high temperature and high pressure treatment, the resin and tannin compounds in the softwood cannot be excluded if steam is not introduced; the content of resin and tannin compound is remarkable as the steaming time and steam temperature increase. Decrease, when the steaming time reaches 10min or the temperature reaches 170°C, the content of resin and tannin compound has been reduced by about 60%. Continue to steam or increase the temperature has little effect on the content of resin and tannin compound. The input and output are not proportional; therefore, the time for steam introduction during high temperature and high pressure treatment is controlled within 3-10min, and the steam temperature should be controlled within 140-170 °C.

Experimental Example 5 Investigation of steam temperature and time during continuous pressure treatment

The steaming time during the continuous pressure treatment was designed to be 0 min, 3 min, 4 min, 7 min, 10 min and 12 min, 6 levels, and the remaining steps were prepared according to the method of Example 15, and the resin in the prepared hardwood internal structure and The content of tannin compounds was investigated, and the results of the investigation are shown in Table 5;

The temperature of the steam introduced during the continuous pressure treatment was designed to be 90 ° C, 100 ° C, 120 ° C, 150 ° C and 160 ° C, 5 levels, and the remaining steps were prepared according to the method of Example 15 for the internal structure of the prepared hardwood. The content of resin and tannin compound was investigated, and the results are shown in Table 5;

表5续压处理过程中通入蒸汽时间和温度的考察结果 Table 5 Investigation results of steaming time and temperature during continuous pressure treatment

考察指标 Survey indicator		树脂含量（ % ） Resin content (%)	单宁化合物含量（ % ） Tannin compound content (%)
时间（min） Time (min)	0 0	0.73 0.73	3.9 3.9
	3 3	0.62 0.62	2.7 2.7
	4 4	0.51 0.51	2.1 2.1
	7 7	0.37 0.37	1.6 1.6
	10 10	0.25 0.25	0.9 0.9
	12 12	0.23 0.23	0.8 0.8
温度（ ℃ ） Temperature ( °C )	90 90	0.65 0.65	3.6 3.6
	100 100	0.52 0.52	2.4 2.4
	120 120	0.36 0.36	1.7 1.7
	150 150	0.26 0.26	0.9 0.9
	160 160	0.25 0.25	0.9 0.9

It can be seen from the table that when steam is not introduced during the continuous pressure process, the entire continuous pressure process can eliminate a very small amount of resin and tannin compound. When the steam is re-introduced, the steam can be introduced into the high-temperature and high-pressure treatment process. The remaining resin and tannin compound are excluded; the more the time is removed and the temperature of the steam increases, but when the time increases to 10 min or the steam temperature rises to 150 ° C, the content of the resin and tannin compound does not pass. Compared with steam, it has been reduced by more than 90%. After increasing the steaming time and steam temperature, the input and output are not proportional. Therefore, the steaming time during the continuous pressure treatment is controlled at 4-10min, and the steam temperature is controlled. 100-150 ° C.

Claims

A method for applying cork compaction into hardwood, characterized in that the method comprises the following steps:

a. High temperature and high pressure treatment: applying a certain pressure to the cork at a certain temperature for high temperature and high pressure treatment;

b. Continuous pressure treatment: the cork after high temperature and high pressure treatment is applied with a certain pressure at a certain temperature to carry out continuous pressure treatment;

c. High temperature decompression treatment: the cork after the continuous pressure treatment is subjected to a reduced pressure treatment at a certain temperature;

d. Cooling and constant pressure health treatment: The cork after high temperature and pressure reduction treatment is cooled under constant pressure.
The method for applying cork compaction into hardwood according to claim 1, wherein the cork is pretreated and then subjected to high temperature and high pressure treatment; and the cork pretreatment is to process the cork into a sheet. Drying, controlling the moisture content of the board, and drying the sheet for positioning sanding.
A method of applying cork compaction into hardwood according to claim 2, wherein the method comprises the steps of:

a) Cork pretreatment: processing cork into sheet, drying, controlling the moisture content of the sheet, and drying the sheet for positioning sanding;

b) high temperature and high pressure treatment: applying pre-treated cork at a certain temperature, applying a certain pressure, and performing high temperature and high pressure treatment in a closed space;

c) continuous pressure treatment: the cork after high temperature and high pressure treatment, under a certain temperature, apply a certain pressure, and continue to pressurize in a confined space;

d) high temperature decompression treatment: the cork after the continuous pressure treatment is subjected to a reduced pressure treatment in a closed space at a certain temperature;

e) Cooling and constant-pressure health treatment: The cork after high-temperature decompression treatment is cooled in a confined space under constant pressure.
The method for applying cork compaction into hardwood according to claim 2, wherein the pretreated softwood is subjected to steam preheating and pressure treatment, and then subjected to high temperature and high pressure treatment; the method comprises the following steps:

1) Cork pretreatment: processing cork into sheet, drying, controlling the moisture content of the sheet, and drying the sheet for positioning sanding;

2) Steam preheating and pressure treatment: steam entering a space of pre-treated cork for a certain time and temperature;

3) High temperature and high pressure treatment: the cork after steam preheating and pressure treatment is applied with a certain pressure at a certain temperature, and the high temperature and high pressure treatment is carried out under the condition of intermittent or continuous steam introduction, and the time for introducing steam is not more than High temperature and high pressure treatment time;

4) Continuous pressure treatment: the cork after high temperature and high pressure treatment is applied with a certain pressure at a certain temperature, and the continuous pressure treatment is carried out under the condition of intermittent or continuous steam introduction, and the time of steam introduction is not greater than the continuous pressure treatment. time;

5) High-temperature decompression treatment: the cork after the continuous pressure treatment is subjected to a reduced pressure treatment at a certain temperature;

6) Cooling and constant pressure health treatment: The cork after high temperature and pressure reduction treatment is cooled under constant pressure.
The method for applying cork compaction into hardwood according to any one of claims 1 to 4, wherein during the high temperature and high pressure treatment, the temperature is 120-150 ° C, the pressure is 15-35 kg/cm 2 , and the temperature is high. The high pressure treatment time is 3-10 min; preferably, during the continuous pressure treatment, the temperature is 160-190 ° C, the pressure is 15-35 kg/cm 2 , the pressurization speed is 50-80 mm/min, and the continuous pressure treatment The time is 4-10 min; preferably, during the high temperature decompression treatment, the temperature is 150-200 ° C, the time of high temperature decompression treatment is 2-10 min, and the pressure is reduced to 5-15 kg/cm 2 ; preferably, During the cooling and constant pressure health treatment process, the temperature of the constant temperature and constant pressure health treatment is 2-7 min, the constant pressure is the standard atmospheric pressure, and the temperature is lowered to room temperature.
The method for applying cork compaction into hardwood according to claim 4, wherein during the steam preheating and pressure treatment, the temperature of the steam is 120-200 ° C, and the steaming time is 2 Preferably, during the high temperature and high pressure treatment, steam is introduced for 3-10 minutes, and steam is introduced at a temperature of 140-170 ° C; preferably, during the continuous pressure treatment, steam is introduced. The time is 4-10 min, and the temperature of steaming is 100-150 °C.
A method of applying cork compaction into hardwood according to claim 3, wherein the control sheet has a water content of 5% to 7%.
A method of applying cork compaction into hardwood according to claim 4, wherein the moisture content of the control panel is from 12% to 17%.
A method of applying cork compaction to hardwood according to any of claims 1-8, wherein said high temperature and high pressure treatment and said continuous pressure treatment step further comprises introducing steam of different colors and/or steam of different odors. .