KR102109459B1 - Manufacturing method of the eco-friendly processing lumber having high-strength for preventing warping and bending and the eco-friendly processing lumber having high-strength for preventing warping and bending manufactured by the same - Google Patents

Abstract

The present invention relates to a method for manufacturing eco-friendly processed lumber having excellent strength without generating warpage and bending, and the eco-friendly processed lumber manufactured by the method. According to the present invention, the method comprises the following steps: firstly pulverizing waste wood and removing foreign matter therefrom to acquire a sawdust type first pulverized material; performing hot-air drying until a moisture content of the first pulverized material becomes 7 to 9%; secondly pulverizing the dried material to acquire a second pulverized material; mixing 10 to 30 parts by weight of a grain starch adhesive composition with respect to 100 parts by weight of the second pulverized material maintaining the moisture content of 7 to 9%; loading the mixture on a press and pressing and drying the same at a pressure of 100 to 200 ton to process the same into a panel of a desired shape; wrapping the outer surface of the panel to be processed by using traditional Korean paper or a sheet; and cutting the wrapped panel to a desired size. The press includes an upper pressing plate adjusted at a temperature of 180 to 200°C and a lower pressing plate adjusted at a temperature of 190 to 210°C. The pressing performed in the step of processed the mixture into the panel of a desired shape is performed 3 to 20 cycles, wherein one cycle comprises a step of performing pressing by a pressure of 150 to 200 ton and a step of stopping pressing.

Description

Manufacturing method of eco-friendly processed wood having excellent strength without bending or warping, and manufacturing method of the eco-friendly processing lumber having high strength without bending or warping produced therefrom warping and bending and the eco-friendly processing lumber having high-strength for preventing warping and bending manufactured by the same}

The present invention relates to a method for manufacturing an eco-friendly processed wood having excellent strength without bending or warping, and to an eco-friendly processed wood having excellent strength without bending or warping produced therefrom.

Conventional interior materials for construction are mainly used by processing wood such as Medium Density Fiberboard (MDF), High Density Fiberboard (HDF), Low Density Fiberboard (LDF), or rice husk, rice straw, sawdust. Some were produced by processing agricultural wastes, mixing with industrial adhesives, and cold pressing.

Prior art related to the manufacture of such processed wood includes Korean Patent No. 10-0987698, Korean Patent No. 10-1322808, and Korean Patent No. 10-1088096. However, even in the case of the related art related to the processed wood, there is still a problem that the strength and the like are poor, and there is a problem that the manufacturing cost is high.

In addition, looking at an example of a conventional method of manufacturing processed wood, waste wood is collected, dried and crushed to make sawdust. A method of preparing a compressed wood, that is, a processed wood, was used by obtaining a crushed product that is sawdust, adding an adhesive to the crushed product, mixing the mixture, and putting the mixture into a molding frame of a compressor, followed by pressing and heating. At this time, it is also possible to manufacture processed wood having various colors by adding a pigment to the adhesive. By the way, the adhesive for bonding the crushed product obtained by crushing with sawdust as described above is considered to be harmful to the human body, which contains a large amount of formaldehyde, dioxins, etc., which are known to be harmful to the human body in consideration of adhesive strength and fast bonding strength. Mixed adhesives, resin binder-containing adhesives, and the like are generally used, and recently, the situation is being ignored by consumers seeking an eco-friendly residential environment.

In addition, these processed wood is manufactured by immersing in formalin for antiseptic treatment, and thus, the interior wood or interior finishing material for construction is manufactured with the finished processed wood. However, since these processed wood is used without post-processing, a large amount of harmful substances such as formaldehyde and total volatile organic compounds (TVOC) are discharged, which may cause various diseases such as atopic skin diseases and rhinitis. do.

In order to solve this, according to Korean Patent Publication No. 2011-0109613, etc., a panel coated with an outer surface of a mixture of ocher and natural bonds to block harmful substances has been disclosed, but there are limitations in fundamentally blocking harmful substances. There was a disadvantage in that cracks are generated or the corresponding part falls and harmful substances are discharged.

On the other hand, in the case of larch or mis pine, which is widely stewed in our country, it has strong strength, grows straight, and has a property of splitting well. When such a larch or cypress grows to a height of about 20-30m. It is harvested from solid wood, and is widely used for construction, lumber, sleepers, pulp, ships, earthworks and interior materials. However, such larch or cypress is not entirely used as wood, but in the case of the upper part having a certain diameter (for example, 150Φ) or less, although it maintains its straight shape, it cannot be used as wood and cannot find a recycling place. Most of them are cut together with branches in thinning paper and then discarded on the site or used as firewood in the future.

Republic of Korea Registered Patent No. 10-0987698 Republic of Korea Registered Patent No. 10-1322808 Republic of Korea Registered Patent No. 10-1088096 Republic of Korea Patent Publication No. 2011-0109613

In order to solve the problems of the prior art as described above, the present invention is excellent in strength without bending or warping, recycling wood that is disposed of domestically, and eco-friendly processing using an adhesive composition made of 100% eco-friendly materials. It is intended to provide a method of manufacturing wood and an environmentally friendly processed wood manufactured therefrom.

In one embodiment of the present invention, the waste wood is first crushed, and the foreign matter is removed to obtain a first sawdust in the form of sawdust; Hot air drying until the water content of the primary pulverized product is 7 to 9%; Secondly pulverizing the dried material to obtain a second pulverized material; Mixing 10 to 30 parts by weight of the grain starch adhesive composition with respect to 100 parts by weight of the secondary pulverized material maintaining a water content of 7 to 9%; After the mixture is loaded into the pressurizing press device, compression molding and drying are performed at a pressure of 150 to 200 tons to process the plate in a desired shape; Wrapping the outer surface of the processed sheet using Korean paper or sheet paper; And cutting the wrapped plate to a desired size, wherein the pressure press device has an upper compression plate adjusted to a temperature of 180 to 200 ° C and a lower compression plate adjusted to a temperature of 190 to 210 ° C. The compression molding of the step of processing into a desired type of plate material may include compression molding at a pressure of 150 to 200 tons; And it provides a method for producing an environmentally friendly processed wood having excellent strength without bending or warping, which is performed in 3 to 20 cycles by stopping the pressurization as one cycle.

The compression molding in the step of processing into the desired shape of the plate material may be performed until the water content of the plate material is less than 1%.

The pressurizing press device is capable of applying ultrasonic waves, and compression molding in the step of processing into a desired type of plate material may be performed while ultrasonic waves are applied.

The pressurized press device is capable of supplying steam of deep ocean water, and the initial 1 to 2 cycles of compression molding in the step of processing into a plate of the desired shape are subjected to compression molding at a pressure of 150 to 200 tons; It may be carried out, including the step of stopping the pressurization and supplying the steam of the deep sea water.

The method of manufacturing the eco-friendly processed wood may further include a step of obtaining the primary pulverized material of the waste wood, and then immersing the primary crushed material in deep sea water for 5 to 24 hours, followed by dewatering. .

The step of acquiring the second pulverized material is to secondly pulverize the dried material to a size of 10 to 150 mesh to obtain a second pulverized material, and the second pulverized material has a certain diameter (r; 50- 200Φ) secondary wood obtained by secondary grinding of larch or pine tree, which is a by-product of straight wood, within a size of 50 to 100 mesh; Secondary pulverized material obtained by secondary crushing of cypress wood to a size of 100 to 150 mesh; And the secondary pulverized material obtained by secondary pulverizing the furniture waste wood to a size of 10 to 50 mesh (Mesh) may be mixed at a weight ratio of 1: 1: 2, respectively.

The grain starch adhesive composition is 1 to 50 parts by weight of propylene oxide, 1 to 10 parts by weight of rosin, 10 to 50 parts by weight of seaweed powder, and 10 to 50 parts by weight of marine algae powder, and deep seawater and Korean paper The mixed pool solution may be mixed with 10 to 50 parts by weight.

According to another embodiment of the present invention, bending or warping according to one embodiment of the present invention does not occur and is produced by a method of manufacturing an eco-friendly processed wood having excellent strength. Providing processed wood.

According to the manufacturing method of the eco-friendly processed wood according to an embodiment of the present invention, there is no bending or warping, and the strength is excellent. There is an effect that can prevent the occurrence.

In addition, there is an effect that can recycle the wood that is disposed of domestically. In particular, it is generated in the process of cutting and pruning trees so that the trees can grow well, as well as household waste wood, as well as forestry projects conducted by the Korea Forest Service. Among the various thinned necks that are missing, while maintaining a certain diameter and length above a certain level, relatively straight wood by-products such as larch and pine needles can be recycled to mass-produce and supply eco-friendly processed wood. Therefore, it is possible to solve environmental problems through recycling of waste wood, and to provide eco-friendly processed wood at an affordable price. In addition, since the waste wood can be completely recycled, it is possible to reduce costs due to incineration, and by recycling the waste wood, it is possible to obtain an advantage according to the import substitution effect in the case of a large amount of wood imported in Korea. In addition, cypress wood powder containing phytoncide may be included, which not only has excellent antimicrobial properties, but also has an effect of emitting substances beneficial to humans.

1 is a view showing a schematic schematic diagram for explaining a method of manufacturing an eco-friendly processed wood according to an embodiment of the present invention.
2 and 3 are graphs showing examples of cycles of compression molding using a pressure press device.

Hereinafter, embodiments of the present invention will be described in detail. However, this is presented as an example, and the present invention is not limited thereby, and the present invention is only defined by the scope of claims to be described later.

The present invention is a step of first pulverizing the waste wood, and removing the foreign matter to obtain a first pulverized sawdust form; Hot air drying until the water content of the primary pulverized product is 7 to 9%; Secondly pulverizing the dried material to obtain a second pulverized material; Mixing 10 to 30 parts by weight of the grain starch adhesive composition with respect to 100 parts by weight of the secondary pulverized material maintaining a water content of 7 to 9%; After the mixture is loaded into the pressurizing press device, compression molding and drying are performed at a pressure of 150 to 200 tons to process the plate in a desired shape; Wrapping the outer surface of the processed sheet using Korean paper or sheet paper; And cutting the wrapped plate to a desired size. A schematic schematic diagram of a method of manufacturing an eco-friendly processed wood according to one embodiment of the present invention is shown in FIG. 1.

In one embodiment of the present invention, the pressurizing press device has an upper compression plate adjusted to a temperature of 180 to 200 ° C and a lower compression plate adjusted to a temperature of 190 to 210 ° C, and is processed into a plate material of the desired shape. The compression molding of the compression molding step of a pressure of 150 to 200 tons; And stopping the pressurization as one cycle, which may be performed in 3 to 20 cycles.

More specifically, the compression molding of the step of processing into the desired shape of the plate material may include compression molding for 30 to 120 seconds at a pressure of 150 to 200 tons; And stopping the pressurization for 2 to 3 seconds as one cycle, and may be performed in 3 to 20 cycles. An example of such a compression cycle graph is shown in FIG. 2.

The manufacturing method of the eco-friendly processed wood according to one embodiment of the present invention is compression-molded over a short period of time under conditions of high temperature and high pressure, even if a 100% eco-friendly grain starch adhesive composition is used, without bending or warping. It has the effect of having sufficient adhesion and strength.

In addition, the compression molding in the step of processing into the desired shape of the plate material is performed until the water content of the plate material is less than 1%, thereby further improving the above-described effect.

In addition, the pressurized press device is capable of applying ultrasonic waves, and the compression molding of the step of processing into a plate of the desired shape is performed while applying ultrasonic waves so that the grain starch adhesive composition is densely mixed and bonded between the tissues of the wood. It can be further improved the above effects.

In addition, the pressurized press device is capable of supplying steam of deep ocean water, and the initial 1 to 2 cycles of compression molding in the step of processing into a plate of the desired shape are subjected to compression molding at a pressure of 150 to 200 tons; Balance of compression molding of the core and the surface of the wood processed by re-supplying moisture and nutrients rapidly evaporating only to the surface by high temperature and high pressure by performing the step of stopping pressurization and supplying steam of deep ocean water. There is an effect that can be tailored. Thereby, the above-described effect can be further improved. An example of such a compression cycle graph is shown in FIG. 3.

First, the step of acquiring the primary pulverized material may be performed by primaryly pulverizing the waste wood and removing foreign substances to obtain a primary pulverized sawdust.

The waste wood may be used by collecting waste wood such as sinks and furniture; This is a forest planting project conducted by the Korea Forest Service, which occurs in the process of cutting and pruning trees so that they can grow well. After the tree is cut, it has no economic value and is discarded or used only as firewood. It can be used by collecting the upper part of relatively straight wood by-products, such as larch and cypress, while maintaining a certain value or more. In addition, any of the above-mentioned waste wood may be used, and the above-mentioned types may be mixed and used.

In particular, when using larch or pine tree as waste wood, it is possible to obtain a beneficial component to the human body, for example, anion release, antibacterial effect and deodorizing effect.

In the present invention, the pulverizer for pulverizing the waste wood has an engine type, an electric type, and the like, and various types of wood grinders (crushers) that are already widely used in the industry can be used.

Method for manufacturing an environmentally friendly processed wood according to an embodiment of the present invention is a step of obtaining the primary pulverized material of the waste wood, immersing the primary crushed material in deep sea water for 5 to 24 hours, and then dewatering It may further include. Salt and mineral components contained in deep sea water penetrate into the primary pulverized tissue, thereby improving the flame retardancy of wood and further improving the adhesion with the grain starch adhesive composition.

Deep ocean water is clear and clean sea water that exists below 200m below the sunlight. Unlike ordinary water available on land, deep ocean water contains various nutrients such as 70 kinds of minerals and nutrients essential to our body. It is known that the composition of water is similar to the body fluid of the human body among water that human beings can obtain from nature, and is most similar to the amniotic fluid of women. In such deep ocean water, various nutrients such as minerals such as magnesium, potassium, and sodium, and nutrient salts are rich enough to be incomparable to ordinary mineral water. Since deep ocean water below 5 ° C deeper than 200m from the sea level does not reach sunlight, it is not able to assimilate because it does not reach sunlight, and plankton and living organisms cannot proliferate. Due to the high properties of cleanliness that is not mixed with contaminated superficial seawater with low density and low temperature at low pressure and high temperature, the wood mixed with this is suppressed from deterioration. As it is, salt and minerals contained in deep ocean water penetrate into the tissues.

Thereafter, the primary pulverized product may be hot-air dried until the water content is 7 to 9%.

In addition, after the hot air drying is completed, the dried product may be immersed in vegetable oil for 1 to 15 hours, and then hot air dried again until the water content becomes 7 to 9%. This has the effect that the salts and minerals contained in the deep sea water penetrate into the tissues and are firmly confined to the tissues through vegetable oil to make the tissues more robust, so that they have sufficient strength without bending or warping. have. In addition, there is an effect that can further improve the adhesion with the grain starch adhesive composition to be mixed.

The vegetable oil is an oil extracted from a plant, a plant seed, or a tree, and independently of each other, urushiol oil, cypress oil, palm oil, coconut oil, castor oil, grape seed oil, jojoba oil, safflower oil, macadamia oil , One or more selected from the group consisting of olive oil and mixed oils thereof.

Subsequently, the dried product after the hot air drying is completed may be secondly crushed to obtain a second crushed product.

More specifically, the step of obtaining the secondary pulverized material may be performed by subjecting the dried material to secondary crushing to a size of 10 to 150 mesh. This has the effect of further improving the even mixing and adhesion with the grain starch adhesive composition to be mixed, so that the processed wood has sufficient strength without bending or warping.

The secondary pulverized product may be prepared by mixing different pulverized particle sizes. Thereby, the density of the processed wood is increased, and there is an effect that the processed wood has more strength without bending or warping.

More specifically, a secondary pulverized product having a size of 10 to 50 mesh; Secondary crushed products having a size of 50 to 100 mesh; And 100 to 150 mesh (Mesh) size of the secondary pulverized by using a mixture in a weight ratio of 2: 1: 1, it is possible to further improve the above effect.

More specifically, the secondary pulverization is secondary pulverization obtained by secondary crushing of larch or pine tree, which is a straight wood by-product having a certain diameter (r; 50-200Φ), to a size of 50 to 100 mesh. water; Secondary pulverized material obtained by secondary crushing of cypress wood to a size of 100 to 150 mesh; And the secondary pulverized material obtained by secondary pulverizing the furniture waste wood to a size of 10 to 50 mesh (Mesh) may be mixed at a weight ratio of 1: 1: 2, respectively. As a result, the above-described effect can be further improved, and the antibacterial property of the processed wood is greatly increased by including a cypress pulverized product, and an antibacterial substance beneficial to humans is emitted.

Thereafter, the secondary pulverized product may be mixed with the grain starch adhesive composition while maintaining a water content of 7 to 9%. More specifically, 10 to 30 parts by weight of the grain starch adhesive composition may be mixed with respect to 100 parts by weight of the secondary pulverized material. The grain starch adhesive composition is 100% environmentally friendly, and by adjusting and strengthening the adhesive force of starch, it is possible to secure an environmentally friendly and sufficient adhesive force.

The grain starch may be one or more selected from rice starch, corn starch, potato starch, tapioca starch, wheat starch, sweet potato starch, and mixed starch thereof.

The grain starch adhesive composition may be mixed with 1 to 50 parts by weight of propylene oxide and 1 to 10 parts by weight of propylene oxide in the presence of an alkali catalyst. As a result, when compression molding is performed in a pressurized press device of high temperature and high pressure, the grain starch is hydroxypropylated, so that the adhesion of starch can be more easily controlled and strengthened, and the rosin component further strengthens the bonding and cracks. By preventing, by strengthening the structure of the pulverized material, there is an effect that the processed wood can have a more sufficient strength without bending or warping.

The alkali catalyst may be used in an amount of 0.5 to 5 parts by weight based on 100 parts by weight of the grain starch powder, one or more selected from sodium hydroxide, potassium hydroxide and mixtures thereof.

In addition, the grain starch adhesive composition is 1 to 50 parts by weight of propylene oxide, 1 to 10 parts by weight of rosin, 10 to 50 parts by weight of seaweed powder, 10 to 50 parts by weight of marine algae powder, and deep ocean water Using the mixture of 10 to 50 parts by weight of the mixed pool solution of Korean paper, the above-described effect can be further improved by further improving the adhesion of the grain starch adhesive composition.

More specifically, when the seaweed powder is subsequently compression-molded in a high-pressure and high-pressure press device, the seaweed powder can be saccharified, and the sugars are bonded to each other to generate adhesion, thereby further improving the adhesion to achieve the above-described effect. Can be further improved. The seaweed powder may be selected from one or more selected from red algae, brown algae, green algae, microalgae, and mixtures thereof, and preferably, green algae is advantageous in terms of saccharification efficiency. As the green algae, one or more kinds selected from perforated green, blue, blue, green, green, blue, green, green, green, green, green, green, green, blue, green, green, green, green, green, blue, green, green, green, blue, green, green, green, blue, green, green, blue, green, green, blue, green, green, blue, green can be used. On the other hand, as the red algae, woody fern, corney, dog gambling, seaweed, round dolmen, gaemu, bird feet, sesame lobster, twine, Jindubal, chamdogam, spiny radish, silk grass, short stalk, stone starfish, stonewood or chinua, etc. This can be used, and the brown algae include seaweed, kelp, buckthorn, minji, plaque, gorimae, seaweed, persimmon, gompi, rhubarb, horsetail history cousin, hat hat, hoeeng hat hat, wormworm or 톳 Can be used.

In addition, the seaweed powder can be further saccharified by enzymes. The enzymes include cellulase, amyloglucosidase, β-agarase, β-galactosidase, β-glucosidase, endo-1,4-β-glucanase, α-amylase, β-amylase, and One or more selected from the group consisting of mixtures of these may be used, but it is preferable to use cellulase and amyl glucosidase. In addition, the enzyme may be used in an amount of 0.01 to 1 part by weight based on 100 parts by weight of the grain starch powder.

In addition, the mixed pool solution of the deep sea water and Korean paper is 100 to 50 parts by weight of the deep sea water of 50 to 80 ° C., and one or more selected from fibres obtained by crushing Korean paper for shoji paper, mulberry bark (bark) and mixtures thereof 80 to 80 It may be prepared by mixing 150 parts by weight. The mixed pool solution of deep sea water and Korean paper serves to make the grain starch adhesive composition more easily and evenly mixed with the secondary pulverized material, so that the processed wood does not have warpage or distortion and has more sufficient strength. It has the effect of making it possible.

In addition, the mixture of the second pulverized material and the grain starch adhesive composition may undergo a step of aging at a temperature of 40 to 60 ° C. for 1 to 5 hours. In this process, through the even mixing of the components, penetration into the tissue and softening of the tissue, there is an effect that the processed wood can have more sufficient strength without bending or warping.

Subsequently, after loading the mixture 10 to the pressurized press device 200, compression molding and drying at a pressure of 150 to 200 tons can be performed to process the plate 100 in a desired shape.

The pressure press device 200 has an upper compression plate 21 adjusted to a temperature of 180 to 200 ° C and a lower compression plate 22 adjusted to a temperature of 190 to 210 ° C, and is processed into a plate material of the desired shape. The compression molding of the step comprises compression molding at a pressure of 150 to 200 tons; And stopping the pressurization as one cycle, which may be performed in 3 to 20 cycles. This is the same as described with respect to the pressurizing press device 200.

More specifically, the compression molding of the step of processing into the desired shape of the plate material may include compression molding for 30 to 120 seconds at a pressure of 150 to 200 tons; And stopping the pressurization for 2 to 3 seconds as one cycle, and may be performed in 3 to 20 cycles. An example of such a compression cycle graph is shown in FIG. 2.

The manufacturing method of the eco-friendly processed wood according to one embodiment of the present invention is compression-molded over a short period of time under conditions of high temperature and high pressure, even if a 100% eco-friendly grain starch adhesive composition is used, without bending or warping. It has the effect of having sufficient adhesion and strength.

In addition, the compression molding in the step of processing into the desired shape of the plate material is performed until the water content of the plate material is less than 1%, thereby further improving the above-described effect.

In addition, the pressurized press device is capable of applying ultrasonic waves, and the compression molding of the step of processing into a plate of the desired shape is performed while applying ultrasonic waves so that the grain starch adhesive composition is densely mixed and bonded between the tissues of the wood. It can be further improved the above effects.

In addition, the pressurized press device is capable of supplying steam of deep ocean water, and the initial 1 to 2 cycles of compression molding in the step of processing into a plate of the desired shape are subjected to compression molding at a pressure of 150 to 200 tons; Balance of compression molding of the core and the surface of the wood processed by re-supplying moisture and nutrients rapidly evaporating only to the surface by high temperature and high pressure by performing the step of stopping pressurization and supplying steam of deep ocean water. There is an effect that can be tailored. Thereby, the above-described effect can be further improved. An example of such a compression cycle graph is shown in FIG. 3.

In addition, the outer surface of the processed sheet material may be wrapped using Korean paper or sheet paper 30.

In addition, the wrapped processed sheet material can be cut to a desired size to produce an environmentally friendly processed wood.

According to another embodiment of the present invention, bending or warping according to one embodiment of the present invention does not occur and is produced by a method of manufacturing an eco-friendly processed wood having excellent strength. Providing processed wood.

According to the manufacturing method of the eco-friendly processed wood according to an embodiment of the present invention, there is no bending or warping, and the strength is excellent, and by using an adhesive composition made of 100% eco-friendly material, There is an effect that can prevent the occurrence.

In addition, there is an effect that can recycle the wood that is disposed of domestically. In particular, it is generated in the process of cutting and pruning trees so that the trees can grow well, as well as household waste wood, as well as forestry projects conducted by the Korea Forest Service. Among the various thinned necks that are missing, while maintaining a certain diameter and length above a certain level, relatively straight wood by-products such as larch and pine needles can be recycled to mass-produce and supply eco-friendly processed wood. Therefore, it is possible to solve environmental problems through recycling of waste wood, and to provide eco-friendly processed wood at an affordable price. In addition, since the waste wood can be completely recycled, it is possible to reduce costs due to incineration, and by recycling the waste wood, it is possible to obtain an advantage according to the import substitution effect in the case of a large amount of wood imported in Korea. In addition, cypress wood powder containing phytoncide may be included, which not only has excellent antimicrobial properties, but also has an effect of emitting substances beneficial to humans.

As described above, the preferred embodiments of the present invention have been described in detail, but the present invention is not limited to the above embodiments, and various modifications by those skilled in the art within the scope of the technical spirit of the present invention This is possible.

<Example 1>

As a waste wood, straight wood by-products, which are straight wood by-products having a certain diameter (r; 50-200Φ), and raw wood and furniture waste wood were collected and prepared.

After first crushing larch or pine wood and furniture waste wood separately using a wood grinder (crusher), the primary crushed material was hot-air dried until the water content reached about 9%. The dried material was secondly ground to a size of 100 mesh to obtain a second ground material.

30 parts by weight of the grain starch adhesive composition was mixed with respect to 100 parts by weight of the secondary pulverized material maintaining a water content of about 9%. At this time, the grain starch adhesive composition was used to mix 100 parts by weight of tapioca starch powder with 30 parts by weight of propylene oxide and 5 parts by weight of rosin in the presence of 3 parts by weight of a sodium hydroxide catalyst.

After pressurizing the mixture into a pressurizing press device having an upper compression plate adjusted to a temperature of about 200 ° C and a lower compression plate adjusted to a temperature of about 210 ° C, after compression of the mixture and drying at a pressure of about 190 tons, desired It was processed into a plate material. At this time, the compression molding and drying are sequentially the first compression molding for 40 seconds; Stopping pressurization for 2 seconds; Second compression molding for 100 seconds; Stopping pressurization for 2 seconds; And tertiary compression molding for 120 seconds; And stopping the pressurization. (Total 3 cycles)

The outer surface of the processed plate material was wrapped using Korean paper, and the wrapped plate material was cut to a desired size to produce an eco-friendly processed wood.

<Example 2>

After first crushing the larch or pine tree and wood waste wood prepared in Example 1 using a wood grinder (crusher) separately, after immersing the primary crushed material in deep sea water for 17 hours, after dehydration, Hot air drying was performed until the water content reached about 9%. Subsequently, each of the dried products in which the hot air drying is completed is immersed in a mixed vegetable oil in which the cypress oil, palm oil, and coconut oil are mixed at a weight ratio of 1: 1: 1 for about 5 hours, and then the water content is 7 to 9 again. It was dried by hot air until it reached%.

The dried material of the larch or pine tree is secondly ground to a size of 70 mesh to obtain a second ground material; The dried product of the furniture waste wood was secondly crushed to a size of 30 mesh to obtain a second pulverized product.

Separately, the cypress wood was first pulverized using a wood grinder (crusher), and then the first pulverized material was hot-air dried until the water content was about 9%. The dried material was secondly ground to a size of 100 mesh to obtain a second ground material.

Secondary crushed material of the larch or pine tree; Secondary crushed wood of cypress wood; And After mixing the secondary pulverized material of the furniture waste wood in a 1: 1: 2 weight ratio, respectively, with respect to 100 parts by weight of the mixture of the secondary pulverized material maintaining a water content of about 9%, the grain starch adhesive composition 25 weight The parts were mixed. At this time, the grain starch adhesive composition is a mixture of tapioca and corn (1: 1 weight ratio) 100 parts by weight of starch powder 2 parts by weight of sodium hydroxide catalyst in the presence of about 30 parts by weight of propylene oxide, 5 parts by weight of rosin, 17 parts by weight of green powder, Cellulase 0.06 parts by weight, and a mixture of 30 parts by weight of a mixed pool solution of deep sea water and Korean paper was used. In addition, the mixed pool solution of the deep sea water and Korean paper was mixed with 100 parts by weight of deep sea water at 50 ° C. and 90 parts by weight of fibers obtained by crushing Korean paper and mulberry bark (bark) for window paper.

Thereafter, the mixture of the secondary crushed product and the grain starch adhesive composition was aged at a temperature of about 55 ° C. for 3 hours.

After pressurizing the mixture into a pressurizing press device having an upper compression plate adjusted to a temperature of about 200 ° C and a lower compression plate adjusted to a temperature of about 210 ° C, after compression of the mixture and drying at a pressure of about 190 tons, desired It was processed into a plate material. At this time, the compression molding and drying are sequentially the first compression molding for 40 seconds; Stopping pressurization for 2 seconds; Second compression molding for 100 seconds; Stopping pressurization for 2 seconds; And tertiary compression molding for 120 seconds; And stopping the pressurization. (Total 3 cycles)

The outer surface of the processed plate material was wrapped using Korean paper, and the wrapped plate material was cut to a desired size to produce an eco-friendly processed wood.

<Comparative Example>

In Example 1, after loading the mixture into a pressurizing press device having an upper compression plate adjusted to a temperature of about 200 ° C. and a lower compression plate adjusted to a temperature of about 210 ° C., compression molding was performed at a pressure of about 190 tons. And dried, to be processed into a plate of a desired shape, wherein the compression molding and drying were performed only once for 5 minutes. A processed wood was manufactured in the same manner as in Example 1 except for this.

<Experimental Example>

For the processed wood produced in the above Examples and Comparative Examples, the flexural strength (flexural strength), water content, distortion occurrence, total volatile organic compound (TVOC) detection and antibacterial properties were measured, and the results are shown in Table 1 below. . At this time, the antimicrobial activity of Escherichia coli ATCC 25922 was measured using the E. coli bacteria reduction rate after 2 hours.

As can be seen through the above test results, it was confirmed that the eco-friendly processed wood according to the present invention does not cause warpage or distortion, and has sufficient whip strength to be used as a building interior material. In addition, it was confirmed that harmful substances such as total volatile organic compounds (TVOC) were not detected. In particular, in the case of Example 2 containing cypress wood, it was confirmed that E. coli was removed about 52% after 2 hours, and thus had an antibacterial effect.

However, in the processed wood according to the comparative example, although no harmful substances such as total volatile organic compounds (TVOC) were detected, it was confirmed that the bending strength was weak and distortion was easily generated. In addition, it was confirmed that the antibacterial activity was lower than that of the eco-friendly processed wood according to the embodiment of the present invention, which is considered to be related to the high water content of the processed wood.

That is, it is judged that the technology of the present invention performed by dividing the compression molding and drying process in the pressure press device several times is more significant than the comparative example.

As described above, those skilled in the art to which the present invention pertains will understand that the present invention may be implemented in other specific forms without changing its technical spirit or essential features. Therefore, the above-described embodiments are all illustrative and should be understood as non-limiting. The scope of the present invention should be construed to include all modified or modified forms derived from the equivalent concept and meaning and scope of the claims, which will be described later, rather than the detailed description.

10: A mixture of crushed waste wood grains and grain starch adhesive composition
11: Processed plate
100: eco-friendly processed wood
200: pressurized press device
21: upper compression plate
22: lower compression plate
30: Korean paper or sheet paper

Claims (8)

Primary crushing of waste wood and removing foreign matter to obtain a primary crushed product in sawdust form;
Hot air drying until the water content of the primary pulverized product is 7 to 9%;
Secondly pulverizing the hot air dried primary pulverized material to obtain a secondary pulverized material;
Mixing 10 to 30 parts by weight of the grain starch adhesive composition with respect to 100 parts by weight of the secondary pulverized material maintaining a water content of 7 to 9%;
After loading the mixture of the secondary crushed material and the grain starch adhesive composition into the pressurizing press device, compressing and drying the mixture at a pressure of 150 to 200 tons, thereby processing the plate into a desired shape;
Wrapping the outer surface of the processed sheet using Korean paper or sheet paper; And
Including; cutting the wrapped plate to a desired size; includes,
The pressure press device is to have an upper compression plate adjusted to a temperature of 180 to 200 ℃ and a lower compression plate adjusted to a temperature of 190 to 210 ℃,
Compression molding in the step of processing into the desired shape of the plate material
Compression molding at a pressure of 150 to 200 tons; And stopping the pressurization as one cycle, and is performed in 3 to 20 cycles,
The step of acquiring the secondary pulverized material is to secondaryly pulverize the hot air-dried primary pulverized material to a size of 10 to 150 mesh to obtain a secondary pulverized material,
The secondary pulverized product
Secondary pulverized products obtained by secondary crushing of larch or pine tree, which is a by-product of straight wood having a certain diameter (r; 50-200Φ), to a size of 50 to 100 mesh;
Secondary pulverized material obtained by secondary crushing of cypress wood to a size of 100 to 150 mesh; And
Secondary pulverization obtained by secondary crushing of furniture waste wood to a size of 10 to 50 mesh (Mesh) is a 1: 1 to 2 weight ratio, respectively. Manufacturing method of eco-friendly processed wood.
According to claim 1,
The compression molding of the step of processing into the desired shape of the plate material is performed until the water content of the plate material is less than 1%, without bending or warping, and a method for manufacturing an eco-friendly processed wood having excellent strength.
According to claim 1,
The pressurizing press device is capable of applying ultrasonic waves,
The compression molding of the step of processing into a desired type of plate material is performed in a state in which ultrasonic waves are applied.
According to claim 1,
The pressurized press device is capable of supplying steam of deep ocean water,
Of the step of processing into the desired shape of the plate material
The initial 1 to 2 cycles of compression molding include compression molding at a pressure of 150 to 200 tons; A method of manufacturing an eco-friendly processed wood having excellent strength without bending or warping, characterized in that it is performed, including stopping the pressurization and supplying steam in deep ocean water.
According to claim 1,
The manufacturing method of the eco-friendly processed wood
After the step of obtaining the primary pulverized material of the waste wood, the primary pulverized material is immersed in deep sea water for 5 to 24 hours, and further comprising a step of dehydrating, without bending or warping. Manufacturing method of eco-friendly processed wood with excellent strength.
delete According to claim 1,
The grain starch adhesive composition
100 parts by weight of grain starch powder, 1 to 50 parts by weight of propylene oxide, 1 to 10 parts by weight of rosin, 10 to 50 parts by weight of seaweed powder, and 10 to 50 mixed pool solutions of deep sea water and Korean paper in the presence of 0.5 to 5 parts by weight of an alkali catalyst A method of manufacturing an eco-friendly processed wood having excellent strength without bending or warping, which is characterized by mixing together with parts by weight.
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