KR101343656B1 - Preservative treated woods and method for manufacturing thereof - Google Patents

Abstract

The present invention relates to preservative treated wood, and a method for manufacturing thereof which comprises the following steps: a) processing wood by cutting green wood into a desired shape; b) heating the processed wood at 180-350°C; c) supplying smoke to the heated wood from the outside for inserting the smoke into the surface and the inside of the wood, and maintaining; d) and cooling the wood with the smoke in the surface and the inside. [Reference numerals] (AA) Step of processing wood into a desired shape; (BB) Step of heating the processed wood; (CC) Step of inserting smoke into the surface of the heated wood and the inside of the wood; (DD) Step of cooling the wood with the smoke in the surface and the inside

Description

Preservative Treated Woods and Method for Manufacturing Technical Field

The present invention relates to a method for manufacturing antiseptic wood, and more particularly, to a method for manufacturing antiseptic wood using heat and smoke processed wood to have a desired shape and the antiseptic wood produced thereby.

The antiseptic wood obtained according to the present invention has sufficient antiseptic property without chemical preservative treatment, thereby protecting the inner surface of wood from insects and the like and having an excellent aesthetic effect.

In general, wood has excellent thermal and thermal insulation properties, and has been used as a building material since ancient times. It is more environmentally friendly than the new materials such as steel, concrete, and plastic, which are used in construction and landscaping. It is a material that can replenish the emotions of modern people who are tired of urban life due to the aesthetic sense, and it is the material that best harmonizes with various natural environments. As the preference of the general public increases, the use of wood continues to increase.

However, due to its flammable flaws, it is not only regulated by the Building Standard Act and Fire Law as a building member, but also outdoor use wood such as landscaping materials can cause biological degradation factors such as pests, ultraviolet rays such as sunlight, Various deterioration factors such as weathering, physicochemical deterioration factors such as water or moisture may cause the wood to lose its original properties and deteriorate into a poor state.

Components of the wood may include cellulose, hemicellulose and lignin. More specifically, the cell wall of wood is composed of cellulose, hemicellulose, and lignin, but the complex and elaborate layered layers of hemicellulose and lignin fill between the long molecules of cellulose that extend horizontally and vertically. It is a complex structure.

On the other hand, wood fungi, one of the causes of biological degradation of wood, can degrade cellulose, hemicellulose, and lignin in wood, or selectively degrade hemicellulose without degrading lignin, and their growth. In addition to nutrient sources, proper space, temperature, oxygen, and water are needed. Wood, which is a collection of dead cells, has many voids such as cell lumens and cell gaps, so for fungi, wood has food, air, and water. It is becoming a very nice residential space. There are many small holes in the cell walls of the wood, called pits, for the passage of liquid, which is a good entrance for fungal mycelium.

In order to prevent deterioration of wood caused by wood decay fungi, insects and the like, and to prevent corrosion from sunlight, weathering, etc., wood should be dried first.

The drying of the wood refers to the evaporation of moisture from the surface by moving the internal moisture to the outside, so that the moisture content difference is generated between the surface and the interior according to the movement of the internal moisture, thereby evaporating the moisture. At this time, the degree of drying can be controlled by changing the conditions of temperature, humidity, wind and the like. For example, as for the degree of drying in the case of structural materials, it is preferable to dry it to 10% in the case of a moisture content of 15% or less, and a decorative material and furniture materials.

The drying method of the wood may be natural drying and artificial drying, which is dried by exposure to natural atmospheric conditions by stacking wood in a combustible drying room, saving facilities, work costs, heat energy, but long drying time and climate It is affected by natural conditions such as location and location. In addition, artificial drying is a method of drying by controlling the temperature and humidity in a dry room, there is an advantage that can be dried up to the water content according to the purpose of use within a short time, but the installation costs a lot. As an artificial drying method, a steam method, a hot air method, a smoke method, a vacuum method, and a high frequency drying method are used.

Currently, wood is dried by hot air and water vapor, which is a direct heating method. Until now, the dried wood is weak in durability due to changes in humidity, causing warpage and deformation, and invading fungus and bacteria. The resistance to is also very low.

Therefore, chemical preservation treatment is required to prevent deterioration and preservation of dried wood, and even though the deformation of wood due to moisture and ambient temperature is still not completely solved, by using chemical preservative separately There may be additional problems because environmental problems may occur.

As a conventional technique related to the production of the preservative wood, Korean Patent Publication No. 10-2010-0033179 (2010.03.29) is to start the absorption of the preservative from the top of the wood so that the preservative can be absorbed homogeneously throughout the wood A method for manufacturing an antiseptic wood and an apparatus for manufacturing an antiseptic wood is described. Also, in Korean Patent Publication No. 10-2009-0006035 (2009.01.14), a single plate heat-treated at a temperature of 150 to 230 ° C. is used for an upper layer and a lower layer. By improving the rate of change and dimensional stability due to moisture and heat, and to solve the distortion caused by heat and moisture, it has been described with respect to the flooring agent and a manufacturing method thereof.

However, in the method of manufacturing the anti-corrosive wood using the prior art including the prior art as described above, the effect of antiseptic and insect repellent is not great, and also the resistance to deformation such as torsion is weak, and also it does not cause aesthetic aesthetics, and thus further improvement of There is room for it. In addition, the conventional chemicals used to improve the antiseptic properties are harmful to the human body or the natural environment and have a problem that they are regulated when they are used in large quantities. There is a continuing need for research and development on the preparation of anti-corrosive wood having a surface that maintains resistance to aesthetics and aesthetics.

Published Patent Publication No. 10-2010-0033179 (2010.03.29) Publication No. 10-2009-0006035 (2009.01.14)

The present invention is resistant to deterioration and deformation of wood by biological factors such as wood fungi, insects, termites, while maintaining resistance to deformation such as torsion, etc. It is characterized by providing a manufacturing method.

In order to achieve the above object, the present invention comprises the steps of a) cutting wood to process wood to have a desired shape; b) heating the processed wood to 180-350 ° C; c) introducing smoke from the outside into the heated wood, introducing smoke into and maintaining the surface and inside of the wood; And d) cooling the wood having smoke absorbed on the surface and the inside thereof.

In one embodiment, the tree in step a) may be processed into any one form selected from a plate shape, a cylinder shape, a spherical shape, a hemispherical shape, a rod shape having a square cross section, and a rod shape having a triangular cross section. .

In one embodiment, the processed wood, to be used in step b) may have a moisture content of 60 to 90 wt%, and the heating time of the wood may be 10 minutes to 3 hours.

At this time, the heating of the wood is made by the inflow of heat by the combustion of the combustion material, characterized in that the flame by the combustion does not directly contact the wood.

In one embodiment, the step c) may be done while stopping heating to the wood or maintaining the temperature heated in step b) to the wood. In addition, the step c) is carried out in a closed kiln, and the time for introducing and maintaining the smoke into the wood may be 5 minutes to 3 hours, and the smoke introduced at this time may be generated by the combustion of the vegetable material. have.

In an embodiment, the steps b) to d) of the present invention may be repeated a plurality of times.

The present invention also provides a preservative wood produced by the manufacturing method described above, the produced preservative wood can be used as building materials.

The present invention by using heat and smoke is discharged to the wooden surface and the oil inside the wood through the heating and at the same time by introducing smoke to the soot coated on the surface of the wood, to produce a preservative wood by a simple and economic method can do.

In addition, the anti-corrosive wood obtained by the present invention is resistant to deterioration and deformation of wood by biological factors such as wood fungi, insects such as termites, while maintaining resistance to deformation such as torsion, surface arousing aesthetics In addition, there is also an advantage that can solve the environmental problems of using a large amount of the chemical barrier according to the prior art.

Figure 1 illustrates a method of manufacturing the preservative wood according to an embodiment of the present invention.
Figure 2 shows an apparatus for producing a preservative wood according to an embodiment of the present invention.
Figure 3 shows a picture of the preservative wood prepared by the prior art and preservative wood prepared according to an embodiment of the present invention.

For the embodiments of the invention disclosed herein, specific structural and functional descriptions are set forth for the purpose of describing an embodiment of the invention only, and it is to be understood that the embodiments of the invention may be practiced in various forms, The present invention should not be construed as limited to the embodiments described in Figs.

As the inventive concept allows for various changes and numerous modifications, particular embodiments will be illustrated in the drawings and described in detail in the text. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, the terms "comprise", "having", and the like are intended to specify the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, , Steps, operations, components, parts, or combinations thereof, as a matter of principle.

1 is a diagram illustrating a method for manufacturing an antiseptic wood according to an embodiment of the present invention. As shown in FIG. 1, the method for manufacturing an antiseptic wood according to the present invention includes cutting wood and processing wood to have a desired shape. ; b) heating the processed wood to 180-350 ° C; c) introducing smoke from the outside into the heated wood, introducing smoke into and maintaining the surface and inside of the wood; And d) cooling the wood having smoke absorbed on the surface and the inside thereof.

Wood used in the present invention can be produced as a preservative wood as a state that is processed to the desired shape by cutting the wood. The tree used at this time is a raw material used to process wood, and means a tree that has not been dried.

For example, the trees that can be used for the processing of the wood includes a gin in the wood, any kind that can be discharged to the surface when heated, preferably, pine, pine oak, oak, cherry, Walnut, ash, oak, birch, cherry, larch may be any one selected from, but is not limited thereto.

In addition, the size and thickness of the wood when processing the tree may vary depending on the intended use.

The tree used in the step a) in the present invention can be freely modified in shape to suit the user's intention, for example, a plate shape, a cylindrical shape, a spherical shape, a hemispherical shape, a rod shape having a square cross section It may have any one shape selected from the shape of a rod whose triangle is a cross section. For example, to form knawawa etc. as the preservative wood can be used in the form of timber, and in order to manufacture the pillars or rafters of wooden buildings can be used in the form of cylindrical trees.

For example, when the preservative timber is used in the form of board wood, the thickness of the plate may have a range of 0.3 to 100 cm, preferably has a range of 0.5 to 50 cm, but is not limited thereto.

In the present invention, the processed wood, to be used in step b) may have a water content of 60 to 90 wt%, preferably a water content of 65 to 85 wt%. At this time, if the moisture content is low, a part of wood may be burned during firing, and if the moisture content is too high, a heating time for preparing the preservative wood is required for a long time, and thus the manufacturing time is long. It is preferable.

In addition, when the wood has a range of water content, by the heating according to the present invention in the most optimal conditions, the gin and moisture inside the wood is released to the outside can be converted to the preservative wood by the introduction of smoke.

On the other hand, in wood, air and moisture that occupy the inside of the wood are taken away from each other by the voids inside the wood, so when the moisture is lost due to drying, the voids are filled with air, and when the moisture increases, the air occupies The volume will be reduced. In the present invention, if the moisture content in the tree exceeds the range of the degree desired by the user, the heat treatment process is carried out after maintaining the proper moisture content by pre-drying in advance if necessary, rather than using the tree for heat treatment immediately It may be desirable to.

In addition, by removing the surface of the tree to remove the epidermis or by heat treatment by finishing the surface with a planer, sandpaper, etc., the surface of the splinter can be brought into a good state.

In the present invention, the heating of the wood in step b) may be achieved by inflow of heat by combustion of the combustion material.

In addition, as long as the combustion source (fuel) used for heating the wood can provide the wood with the temperature in the above range, any material can be used without limitation, but preferably fuel such as coal, gas, or Vegetable fuel, such as dry firewood, can be used. In this case, there may be a sufficient distance between the flame from the combustion and the wood to be heat-treated so as to prevent the flame from burning directly touching the wood and to prevent the combustion of the wood, or to prevent the flame between the wood and the fuel source. It is preferable to provide a buffer film or the like. The buffer membrane has a form having a plurality of holes through which hot heat can pass in a metal panel made of a flat plate, and by providing a plurality of buffer membranes, flames can directly prevent the wood from burning.

At this time, the heating temperature of the wood is preferably maintained at 180 ~ 350 ℃, it is more preferable to maintain 180 ~ 250 ℃. At this time, the heating temperature means a temperature applied directly to the surface of the wood.

In general, when heat treating wood, living cells are killed by heat at around 100 ° C, and water is dehydrated in wood at below 180 ° C to produce water vapor. Above all, the melting temperature of the wood gin is about 180 ° C or higher. Maintaining the temperature range can boil out the lumber, oil, etc. from the inside of the wood to be discharged to the outside of the wood to coat the surface, it is preferable to maintain the temperature above 180 ℃.

If it is less than 180 ℃ dehydration reaction may not be performed properly from the surface of the wood, and if it is above 350 ℃ cellulose and lignin is pyrolyzed and the wood may be calcined, carbonized or burned to maintain the above range.

In addition, the heating time of the wood in step b) of the present invention may be 10 minutes to 3 hours, preferably 30 minutes to 2 hours. If the heating time of the wood is less than 10 minutes, the gin of the tree does not come out to the surface of the wood, if more than 3 hours can not be expected any more effect is the time in the above range. Wherein the 180 to 350 ℃, when heated for 10 minutes to 3 hours, the wood oil and / or sediment inside the wood is impregnated with the fiber inside the wood, as well as melted to the outer surface of the wood, the outside The wood dust from the wood is mixed with the smoke from the later stage to prevent the penetration of moisture by coating the surface with soot, and also because the antiseptic and insect repellent effect can be obtained through self-sterilization, the above heating temperature and heating time It must be maintained.

Step b) can be carried out in a closed or open kiln.

At this time, the temperature of the inside of the kiln in which the processed wood is heated is increased step by step, it is good to increase approximately 3-20 ℃ per minute. If the temperature inside the kiln is sharply increased, a difference occurs in the heating rate between the surface and the inside of the wood, and the surface and the inside of the wood are not heated uniformly. Preference is given to heating in stages.

In this way, when the temperature is gradually raised to a certain temperature, it is possible to sufficiently secure the time for heat transfer from the surface of the heated wood to the inside, thereby preventing unnecessary deformation of the wood due to heat, that is, cracking or warping. have. In addition, it is possible to suppress the occurrence of the difference in sound absorption performance over the inside and the surface of the wood.

In addition, in order to perform the step of cooling the wood, which is the step d), and also in the case of lowering the heating temperature, it is possible to prevent unnecessary deformation of the wood due to a sudden temperature change if the step is lowered step by step as in the heat treatment step. That is, by gradually lowering the heating temperature of the wood, it is possible to prevent the deformation of the processed wood, such as twisting or cracking, the advantage that no additional process or additional reinforcing member to prevent the deformation of the wood is unnecessary There is this.

On the other hand, in the present invention, the step of introducing smoke into the surface and the inside of the wood by introducing smoke from the outside into the heated wood in the step c) can be carried out while continuously heating the previous wood, Alternatively, the heated wood may be smoke introduced without further heating. That is, the process of introducing smoke into the surface and the inside of the wood may continue to heat the wood from the outside to maintain the temperature at which the wood is heated while simultaneously introducing the smoke into the wood at the same time maintaining the temperature, or to the wood Smoke can be introduced while further heating is stopped.

To this end, the smoke from the outside may be generated by the combustion of a vegetable material that can generate smoke such as fresh pine needles, pine, pine, sawdust, rice straw, etc. Vegetable materials including gin can be used. For example, a conifer-based material such as fresh pine needles, pine, pine, etc. may be used as the vegetable material including the gin.

On the other hand, if the smoke from the outside is too small, the amount of smoke is introduced into the surface and the inside of the heated wood to be less than the appropriate amount of supply of smoke.

In addition, when there is too much smoke from the outside, there is a disadvantage in wasting resources unnecessarily, so that the amount of smoke can be appropriately adjusted according to the thickness of the splint and the purpose of use.

On the other hand, the time to keep the smoke flowing into the wood of the present invention may be 5 minutes to 3 hours, preferably 30 minutes to 1 hour.

In the present invention, the step of introducing the smoke into the surface and the inside of the wood by introducing smoke from the outside into the heated wood in step c) may be performed in a closed kiln. The kiln can also be used in step b).

Hereinafter will be described in detail with respect to the configuration of the kiln for producing the preservative wood in the present invention.

2, the kiln includes a combustion chamber 110, a smoke generating chamber 120, a heating chamber 140, and a buffer film 130 provided between the combustion chamber and the heating chamber.

The kiln may have a square or round dome shape, and may have a buffer membrane 130 that prevents flames from being burned by direct combustion of flames from the bottom surface.

In addition, the kiln may be provided with at least one temperature display device (not shown) to check the heating degree of the wood.

In addition, the kiln may be provided with a smoke inlet 160 for introducing smoke to the bottom or side, the top or side of the smoke is introduced in the step c) can be discharged after producing the preservative wood It may be provided with a smoke outlet (170). In this case, the inlet and the outlet of the kiln may be provided with a valve 145, respectively, to maintain or increase or decrease the amount of smoke after the smoke in the step c) is introduced.

In addition, the kiln has a fuel inlet for injecting the material to be burned into the combustion chamber or taking out the used fuel, and further includes an exhaust port 150 in the space between the combustion chamber and the heating chamber to burn or burn the flame in the combustion chamber. Can control the amount of air released.

In addition, the kiln may be provided with a spout opening or closing opening (not shown) on the top or side to take out the finally obtained preservative wood to the outside.

In addition, the present invention may be provided separately from the combustion chamber smoke generating chamber 120 for introducing smoke into the wood surface and inside. In the smoke generating chamber, smoke may be introduced into the combustion chamber 110 by burning a vegetable material which is easy to generate smoke such as fresh pine needles, and the smoke generating chamber and the combustion chamber may be connected by a smoke inlet 160.

On the other hand, in the case of a material such as fresh pine needles, pine, pine, etc., the material itself is burned for heating the wood in the combustion chamber, the fuel used in the combustion chamber without having a separate smoke generating chamber 120 The antiseptic wood in the present invention can be produced by replacing or adding to a material generating smoke.

In addition, the smoke introduced into the combustion chamber may be discharged to the outside air through the smoke outlet 170.

On the other hand, in the step c) of the present invention, the time to keep the smoke flowing into the wood may be 5 minutes to 3 hours, preferably 30 minutes to 1 hour.

Through the heat treatment of the wood in the present invention, the wood oil and / or the essence inside the wood are combined with the fibers inside the wood and they are melted to the outer surface of the wood to mix with the introduced smoke to coat the surface.

The smoke is mixed with wood oil, liquefied liquid, etc. discharged from the inside of the heat-treated wood to the surface, and various reactions occur physically or chemically, and among them, the surface of the wood is coated with soot so that the surface of the wood is moistened. It does not penetrate and prevents the dimensional change of wood due to the absorption and release of water, and at the same time has an antiseptic, mold suppression and insect repellent effect.

In addition, the defects of wood, such as bending, deformation, and splitting, can be caused by growth stresses formed during the growth of wood, which can support the weight of the wood itself and protect it from external forces such as natural wind or snow. With the resistance stockpile inside, the timber is released from its stresses, bending or splitting.

The growth stress varies depending on the type and region of the tree (growing environment such as climate and location conditions), growth degree, tree shape, root state, and the like. In the same type of tree, since the growth stress of the outer circumference of the trunk is almost the same, the deformation of the wood with the small diameter becomes larger.

In the present invention, during the heat treatment of the tree, when the temperature in the wood rises, the water in the wood becomes water vapor due to heat, the volume increases, and the cells swell. In the meantime, some of the ligrin and hemicellulose contained in the wood are thermally softened with sufficient wetness, making the cell walls easier to move, resulting in the removal of the ligrin binding, which fixes the distortions caused by the cellulose in the cell walls. It is alleviated and the distortion that has been fixed to each cell is reduced. As a result, the deformation caused by the growth stress of the entire wood is reduced, and the smoke introduced in the present invention is coated in response to the surface and the inside of the heat treated wood, thereby suppressing or preventing the absorption axis of moisture. It is to prevent deformation.

Meanwhile, in the present invention, the steps b) to d) may be repeated a plurality of times. For example, if the process of heating the wood and introducing the smoke to the surface layer of the two or more times can lower the moisture content of the wood and a plurality of coating layers can be obtained to obtain a more dense coating layer.

At this time, by repeating the fume heat treatment process, as well as lowering the moisture content value of the wood, there is an advantage that can control the color of the wood surface due to the soot appearing on the surface of the wood.

In addition, the present invention can provide an antiseptic wood produced by the manufacturing method described above.

As described above, by forming the undried tree and heating it after processing, the sap or oil component soaked in the tree itself may boil out of the cells and be coated with rosin or oil on the surface as well as the inside. If the smoke introduced through the post-smoking process is permeated into the surface and cells of the plate, as well as its own sterilization, the color of the surface is black and has the advantage of being luxurious.

In addition, the antiseptic wood of the present invention can be used as a building material for a variety of uses, such as interior and exterior materials of buildings, it is also applicable to household goods such as wood crafts, desks, chairs, bookshelves.

Hereinafter will be described through a preferred embodiment of the method of manufacturing antiseptic wood according to the present invention. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

<Examples>

Example 1

As a tree, prepare pines in the form of boards of 20 cm × 45 cm and 22 mm thickness. About 200 prepared trees are put in the kiln. The kiln is provided with a two-layer firing chamber in which wood is heated, and each layer is provided with a stainless steel partition configured to separate and arrange wood-based wood.

Each layer in the firing chamber is provided with a thermometer to measure the temperature of each layer, thereby adjusting the degree of combustion.

The lower part of the kiln is provided with a combustion chamber for heating wood through combustion of combustion materials, and the flame of the combustion from the combustion chamber directly touches the wood so as to prevent the burning of wood, the metal plate A plurality of buffer films made of a plurality of holes through which hot heat can pass are included at regular intervals between the combustion chamber and the heating chamber. By controlling the number of the buffer membrane and the distance between the combustion chamber and the heating chamber it is possible to adjust the heating temperature of the wood in the heating chamber to 180 ~ 350 ℃.

In addition, the side of the kiln is provided with a smoke inlet through which the smoke can be introduced and a smoke outlet through which the introduced smoke can be discharged after manufacturing the preservative wood.

In the present invention, the smoke introduced into the heated wood is generated by burning raw pine and pine needles in a smoke generating chamber of a separate structure from the combustion chamber, and the smoke is introduced into the firing chamber through the smoke inlet. Allow inflow.

In addition, the inlet and outlet side of the smoke in the kiln is provided with a valve to block the inflow and discharge of smoke.

In order to heat the wood of the reactor kiln, firewood or coal is burned to raise the temperature inside the firing chamber to 220 ° C. at 5 ° C. per minute. The oil and gin in the wood are discharged to the outside while maintaining the temperature inside the firing chamber at 220 ℃ for 40 minutes, allowing the moisture to dry.

After that, the temperature inside the reactor Stop the combustion of fuel in the state maintained at 220 ℃ and burn the pine needles in the smoke generating chamber provided separately to close the valve of the smoke outlet so that the smoke is filled inside the firing chamber through the smoke inlet, in the closed state Hold for 1 hour to allow smoke to enter the exterior and interior of the wood.

At this time, in the smoke generating chamber can control the amount of smoke generated by controlling the generation of smoke by stopping the combustion of raw pine, pine needles and the like or by burning only a small amount of content, through which is introduced into the surface and inside of the wood The amount of smoke to be controlled can be controlled.

When the smoke is introduced and the surface of the wood is soot coated, the valve of the smoke outlet is opened so that excess smoke in the firing chamber is discharged to the outside, and the air in the firing chamber is ventilated through the fan inside.

After the surface-coated anticorrosive wood is cooled to room temperature and cooled sufficiently, the anticorrosive wood obtained by opening the opening and closing opening provided in the upper part of the kiln is taken out.

Example 2

As in Example 1 to prepare a preserving wood, except that only the heating temperature of the tree was set to 190 ℃, the rest was prepared in the same way as in Example 1.

Comparative Example 1

As in Example 1 to prepare a preserving wood, the heating temperature of the tree is only 150 ℃ difference is the difference, the rest was prepared in the same way as in Example 1.

Comparative Example 2

Preserving wood was prepared in the same manner as in Example 2, but the preservatives were prepared by omitting the step of introducing smoke.

Performance evaluation of the splint

Figure 3 shows a picture of the preservative wood prepared by the prior art and preservative wood prepared according to an embodiment of the present invention. In more detail, FIG. 3A illustrates an antiseptic wood according to Example 1, FIG. 3B is an antiseptic wood according to Example 2, FIG. 3C is an antiseptic wood according to Comparative Example 1, and FIG. 3D is obtained according to Comparative Example 2. This is a picture of preservative wood.

As shown in FIG. 3, the antiseptic wood obtained by Examples 1 and 2 of the present invention has a beautiful black appearance by the process of smoking wood, and also by introduction of the essence and smoke discharged from the inside of the wood. As a result, the surface is densely coated and shows good torsional strength and antiseptic properties.

On the other hand, the preservative wood according to Comparative Example 1 of Figure 3c has a heating temperature of the wood is lower than the temperature of the wood heated by the present invention, the liquid is not sufficiently discharged from the interior of the wood, only the surface portion has antiseptic The surface also showed less dense results than the degree obtained by the present invention.

In addition, Figure 3d is a preservative wood according to Comparative Example 2, which is omitted the process of introducing smoke, the surface is coated with only the wood essence, the surface is the same as the color of the wood, the surface of the coating was not found to be dense, In addition, the surface of the wood is not absorbed by the smoke shows the result of the wood preservation is poor.

Although the present invention has been described with reference to the preferred embodiment with respect to the preparation of the splinter according to the embodiments of the present invention, those skilled in the art will be aware of the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. It will be understood that various modifications and variations can be made to the invention.

10 wood 110 combustion chamber
120: smoke generating chamber 130: buffer film
140: heating chamber 145: valve
150: exhaust port 160: smoke inlet
170: smoke outlet

Claims (11)

a) cutting the wood to process the wood to have the desired shape;
b) heating the processed wood to 180-350 ° C;
c) introducing smoke from the outside into the heated wood, introducing smoke into and maintaining the surface and inside of the wood; And
d) cooling the wood absorbed by the smoke on the surface and the inside; The method of claim 1,
In the step a), the tree is a wood (panel), cylindrical, spherical, hemispherical, cross-section square bar shape, the cross section of the anti-corrosive wood, characterized in that the processing of any one selected from the form of a bar Manufacturing method The method of claim 1,
Processed wood to be used in step b), the method of producing a preservative wood, characterized in that the moisture content of 60 to 90 wt% The method of claim 1,
The heating time of the wood in the step b) is a method for producing a preservative wood, characterized in that 10 minutes to 3 hours The method of claim 1,
The heating of the wood in step b) is made by the inflow of heat by combustion of the combustion material, the method of producing the preservative wood, characterized in that the flame by the combustion does not directly contact the wood The method of claim 1,
The c) step is to stop the heating on the wood or to maintain the temperature heated in step b) on the wood manufacturing method of the preservative wood, characterized in that The method of claim 1,
Step c) is carried out in a closed kiln, the time for keeping the smoke flowing into the wood Method of producing antiseptic wood, characterized in that 5 minutes to 3 hours The method of claim 1,
The smoke introduced in step c) is produced by the combustion of the vegetable material, characterized in that for producing the wood preservative The method of claim 1,
Step b) to step d) is a method of producing a preservative wood, characterized in that repeated a plurality of times Anticorrosive wood produced by the manufacturing method according to any one of claims 1 to 9. Building materials containing the antiseptic wood according to claim 10

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