KR20140008904A - Eco-friendly synthetic wood and manufacturing method thereof - Google Patents

Abstract

The present invention relates to eco-friendly wood, which is formed by mixing natural materials with synthetic resins and various kinds of additives and extruding and molding the mixture, and a method for manufacturing the same. The method provides the eco-friendly wood formed by mixing 50-65 parts by weight of wood flour, 0.5-5 parts by weight of starch, 0.1-5 parts by weight of barley stone powder, 20-30 parts by weight of PVC, 5-20 parts by weight of ABS, 0.05-1 parts by weight of effective microorganism (EM) powder, and additives using heat, then compressing the mixture. According to the present invention, the eco-friendly wood contains the barley stone having a superior purification ability and the EM, thereby decomposing contaminants such as dioxin and purifying water; has excellent effects of anti-oxidative, antibiotic, and deodorization, thereby maintaining mechanical properties or colors; alkalizes acidic materials, thereby preventing the oxidation of the synthetic wood; improves surface frictional resistance, thereby having good slip-resistant properties; has a low linear coefficient of expansion, thereby preventing shape transformation; and gives a feeling of natural wood. [Reference numerals] (S10) Drying and sterilizing (Sterilizing by drying wood flour, starch, and barley stone powder in a dryer); (S20) Heating and mixing (Making a mixture by putting 50-60 parts by weight of wood flour, 0.5-5 parts by weight of starch, 0.1-5 parts by weight of barley stone powder, 20-30 parts by weight of PVC, 5-20 parts by weight of ABS, 0.05-1 parts by weight of EM powder, aggregate of microorganisms, and the additives into a mixer and heating); (S30) Compressing and molding (Molding a board by compressing the heated and mixed mixture); (S40) Cooling (Cooling the compressed and molded board)

Description

Eco-friendly synthetic wood and its manufacturing method {ECO-FRIENDLY SYNTHETIC WOOD AND MANUFACTURING METHOD THEREOF}

The present invention relates to a synthetic wood and a method for manufacturing the same, and to an environmentally friendly synthetic wood and a method for manufacturing the same by extrusion molding by mixing together a natural material, synthetic resin and various additives.

In general, natural wood has been mainly used for interior and exterior finishing materials, floorboards, door frames, windows, landscaping fences, fences, climbing floors, stair floors, handrail members, legs.

Natural wood is excellent in texture, but vulnerable to moisture, poor water resistance, poor resistance to corrosion, poor wear of the surface, poor flame retardancy, and has a variety of problems that are not durable.

Complementing the problems of the natural wood and at the same time closest to the natural wood is made of synthetic wood, and recently has been widely used as interior and exterior materials for building, landscaping and the like.

The synthetic wood is mixed with raw materials having a fiber produced naturally, such as wood flour, chaff powder, rice straw powder, thermoplastic synthetic resin and various additives, and then melted at high temperature in an extruder to pressurize the mold. Is being produced.

In this regard, Korean Unexamined Patent Publication No. 10-1997-0073955 and Korean Unexamined Patent Publication No. 10-2001-0055513 disclose a method for manufacturing synthetic wood.

However, this prior art has a problem that the bonding strength of the wood powder and the synthetic resin is lowered due to the heterogeneous nature of the wood powder and the synthetic resin, so that cracks or breakage may occur in the synthetic wood.

In addition, when the anti-slip performance is installed as a staircase or a building flooring material such as trails and hiking trails, there is a problem that a high probability of an accident occurs due to high humidity or rain or snow.

In addition, the wear and tear of the surface of the synthetic wood is increased over time, the durability and anti-slip performance is deteriorated, there is a problem that corrosion, decay or discoloration or mechanical properties are deteriorated by bacteria due to antibacterial, anti-odor, antioxidant properties.

Furthermore, the synthetic wood is bent or bent due to external physical shocks, and the length coefficient of thermal expansion is high, so it is easily shrunk or expanded due to external seasonal and day and night temperature differences. there is a problem.

In addition, there is a problem that toxic substances are discharged in the event of a fire.

The present invention has been made in order to solve the above-mentioned problems, including the elutability and the excellent microorganism EM, which is excellent in decomposing contaminants such as dioxins and purifying the water quality, and excellent in antioxidant, antibacterial and anti-odor, mechanical It is not deteriorated or discolored, alkalinizes acidic materials to prevent oxidation of synthetic wood. It also has excellent resistance to slipping by increasing frictional resistance of the surface. The purpose of the present invention is to provide an environment-friendly synthetic wood and a method of manufacturing the same that gives a feeling close to natural wood.

In order to solve the above problems, the present invention provides 50 to 65 parts by weight of wood powder, 0.5 to 5 parts by weight of starch, 0.1 to 5 parts by weight of ganbanite powder, 20 to 30 parts by weight of PVC, 5 to 20 parts by weight of ABS, and EM powder which are useful microorganisms. 0.05 to 1 part by weight of the additives and heat-mixing after compression to provide a molded eco-friendly synthetic wood.

In addition, the present invention is 50 to 65 parts by weight of chaff powder, 0.5 to 5 parts by weight of starch, 0.1 to 5 parts by weight of elvan powder, 20 to 30 parts by weight of PVC, 5 to 20 parts by weight of ABS and 0.05 to 1 EM powder of useful microorganisms By weight after mixing the heat and additives to provide an eco-friendly synthetic wood molded.

At this time, the additive of the present invention is 0.5 to 5 parts by weight of non-toxic stabilizer, 1 to 10 parts by weight of coupling agent, 0.1 to 1 part by weight of colorant, 0.1 to 0.5 parts by weight of lubricant, 0.1 to 0.5 parts by weight of UV stabilizer, calcium carbonate from 0.05 to It is also characteristic that at least one of 0.5 parts by weight is added.

In addition, the present invention comprises a drying and sterilizing step of drying and sterilizing wood powder, starch and ganban stone powder in a dryer; 50 to 65 parts by weight of wood powder, 0.5 to 5 parts by weight of starch, 0.1 to 5 parts by weight of ganban stone powder, 20 to 30 parts by weight of PVC, 5 to 20 parts by weight of ABS, and 0.05 to 1 parts by weight of EM powder, which is a useful microorganism, and a blender Heating and mixing step to prepare a mixture by heating in; A compression and molding step of forming a base plate by compressing the heated and mixed mixture; And a cooling step of cooling the compressed and molded base plate.

In addition, the present invention comprises a drying and sterilization step of sterilizing the chaff powder, starch and ganban stone powder by drying in a dryer; 50 to 65 parts by weight of chaff powder, 0.5 to 5 parts by weight of starch, 0.1 to 5 parts by weight of ganban stone powder, 20 to 30 parts by weight of PVC, 5 to 20 parts by weight of ABS and 0.05 to 1 parts by weight of EM powder, which are useful microorganisms, and additives Heating and mixing step of putting into a blender and heating to prepare a mixture; A compression and molding step of forming a base plate by compressing the heated and mixed mixture; And a cooling step of cooling the compressed and molded base plate.

Here, the drying and sterilizing step of the present invention is characterized in that it is made for 3 to 5 hours at a temperature of 130 ~ 150 ℃.

In addition, in the heating and mixing step of the present invention, the additive is 0.5 to 5 parts by weight of a non-toxic stabilizer, 1 to 10 parts by weight of coupling agent, 0.1 to 1 part by weight of colorant, 0.1 to 0.5 part by weight of lubricant, 0.1 to 0.5 UV stabilizer It is also characterized by the addition of at least one or more of 0.05 to 0.5 parts by weight of calcium carbonate and parts by weight.

Furthermore, the heating and mixing step of the present invention is characterized in that it is made at an image temperature of 130 ℃ or less.

In addition, the compression and molding step of the present invention is characterized in that it is made at a temperature of 170 ~ 250 ℃.

In addition, the cooling step of the present invention is characterized in that it is made at an image temperature of 10 ℃ or less.

According to the present invention, it contains elvan and excellent microorganisms EM and excellent microorganisms to decompose contaminants such as dioxins and to purify the water quality, excellent antioxidative, antibacterial and anti-odor, mechanical properties are not degraded or discolored, acid It not only prevents the oxidized synthetic wood by oxidizing the material, but also improves the frictional resistance of the surface, so it has excellent anti-slip performance. There is.

1 is a flow chart related to a method for manufacturing an environmentally friendly synthetic wood according to an embodiment of the present invention.
2 is a flow chart related to a method for manufacturing an environmentally friendly synthetic wood according to another embodiment of the present invention.
3a and 3b is a test report of the Korea Institute of Construction and Living Environment Testing (KCL) for eco-friendly synthetic wood according to the present invention.
Figure 3c is a table showing the quality standards of the test report items according to KS F 3230.

The inventors of the present invention, due to the heterogeneous nature of the wood powder and the synthetic resin, the bonding strength of the wood powder and the synthetic resin is lowered, so that cracks or breakage may occur, and the anti-slip performance is high, and the likelihood of accidents is high, and the surface wear is high, antibacterial, As a result of repetitive research and efforts to solve these problems, recognizing that there are problems of deodorization and anti-oxidation, bending due to external physical impact, and having high coefficient of thermal expansion, deformation due to swelling and expansion. It contains decontamination of elvan powder and useful microorganism EM powder to decompose contaminants such as dioxins and purify water quality, and has excellent antioxidative, antibacterial and anti-odor properties, so that the mechanical properties are not degraded or discolored, and the acid is alkalized. This prevents the oxidized wood from oxidizing and increases the frictional resistance of the surface. Kkeureom preventing performance is excellent, and the length of linear thermal expansion coefficient is not a low strain and durability, and completed the present invention relates to environment-friendly synthetic wood and its manufacturing method that the feeling close to natural wood.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[Drying and sterilization step ( S10 )]

As shown in Figure 1, first, the drying and sterilizing step (S10) is a process of drying and sterilizing the wood powder, starch and ganban stone powder in a dryer.

The wood flour, starch and elvan powder are preliminarily pulverized into fine particles to prepare a particle size in the range of 20 to 120 mesh. This is because the smaller the particles, the better the processability such as dispersion and bonding, but the lower the strength of the product.

Moisture contained in wood flour, starch and elvan powder may adversely affect the surface formation of synthetic wood and cause voids, and corrosion and decay may occur due to bacterial propagation.

In addition, the lower the moisture content of the wood powder by drying, the better the mechanical properties, stable to heat and can reduce the swelling phenomenon of the product, so that the moisture content is dried to low.

In addition, the drying and sterilization step (S10) is preferably carried out for 3 to 5 hours at a temperature of 130 ~ 150 ℃, which is drying, if the drying and sterilization temperature is less than 130 ℃ or the drying and sterilization time is less than 3 hours, And because the sterilization effect may be lowered, and if the drying and sterilization temperature exceeds 150 ° C. or the drying and sterilization time exceeds 5 hours, it may cause release of volatiles, discoloration, odor and deterioration of wood components.

[Heating and mixing step ( S20 )]

After the drying and sterilization step (S10), 50 to 65 parts by weight of wood powder, 0.5 to 5 parts by weight of starch, 0.1 to 5 parts by weight of ganban stone powder, 20 to 30 parts by weight of PVC, 5 to 20 parts by weight of ABS and useful microorganisms The heating and mixing step (S20) of preparing a mixture by heating 0.05 to 1 part by weight of the soldier EM powder and the additive into the blender to heat.

Wood flour is made by pulverizing materials such as wood, waste wood, chips, shaving and sawdust into fine powder using a grinder.The chemical composition consists of cellulose, hemicellulose, lignin and low molecular weight wax made of microfibers. , Tannins and rosins, and gives wood the same texture as synthetic wood.

At this time, the wood powder is preferably included in the 50 to 65 parts by weight, if the wood powder is included in less than 50 parts by weight, the texture, such as wood of synthetic wood is significantly reduced, the inherent elasticity of the wood is reduced, If it is included in excess of 65 parts by weight, the durability and strength of the synthetic wood may be lowered, it is because extrusion is difficult because the extrusion is not performed properly.

Starch (sratch) is a very soft powder obtained from corn, potatoes, sweet potatoes, etc., when pressed at high temperature hardens the crystals of starch to harden the synthetic wood.

At this time, the starch is preferably contained 0.5 to 5 parts by weight, the above-mentioned effect is lowered when the starch is contained in less than 0.5 parts by weight, the strength of the synthetic wood is rather reduced when the starch is included in excess of 5 parts by weight Because it can be.

Elvan powder emits far-infrared rays, alkalizes acidic water quality to prevent oxidized synthetic wood, decomposes harmful bacteria, etc., and also has excellent deodorizing performance.

In this case, it is preferable that the gannetite powder is included in an amount of 0.1 to 5 parts by weight. If the gannetite powder is included in less than 0.5 part by weight, the above-mentioned effect is lowered, and when included excessively, the cost increases.

Polyvinyl chloride (PVC) and acrylonitrile butadiene styrene (ABS) are both representative thermoplastic resins with excellent processability.The PVC is mixed with synthetic wood in the form of chips or powder, and extruded and molded, so that the water resistance, corrosion resistance, flame resistance and durability of the synthetic resin Will increase.

At this time, the PVC is preferably contained 20 to 30 parts by weight, if the PVC is included in less than 20 parts by weight, the dispersion and bonding strength of the wood powder may be lowered, thereby reducing the strength and durability of the synthetic wood If the PVC exceeds 30 parts by weight, there is a problem that the elasticity and restoring force of the synthetic wood is lowered.

In addition, the ABS is a synthetic resin polymerized acryl, butadiene and styrene, is used in the form of chips or powder, and the acrylic powder is excellent in affinity with wood powder, the wood powder is smoothly dispersed, mixed well with wood powder, not only has excellent bonding strength, It gives a good elasticity to synthetic wood, provides anti-slip performance and provides excellent surface gloss.

At this time, it is preferable that the ABS 5 to 20 parts by weight is included, when included in less than 5 parts by weight of ABS, the above-described effect is lowered, and when the ABS is included in excess of 20 parts by weight, the mixing ratio with PVC is not appropriate This is because the basic characteristics of wood, such as wood, are inferior.

As such, the ABS imparts elasticity to the synthetic wood to increase the frictional resistance of the surface, thereby having a non-slip performance without performing a step of forming irregularities in the synthetic wood separately.

In addition, when the PVC and ABS are mixed with the wood powder and the like at an appropriate ratio as described above, the length coefficient of thermal expansion is low, there is no deformation and excellent durability.

EM (Effective microorganism) refers to a group of useful microorganisms that are beneficial to humans among many microorganisms in nature, including photosynthetic bacteria, lactic acid bacteria, yeast bacteria, actinomycetes, and fermentation products produced by complex coexistence and coexistence between them. It can be said that the antioxidant power is the effect of EM.

Photosynthetic bacteria use the light and heat received by the soil as energy sources to feed secretions, organics, or harmful gases from the roots of plants to synthesize a number of substances that promote the growth of plants such as nitrogen compounds, amino acids, bioactive substances, and sugars. It is an autotrophic microorganism. Their metabolites are directly absorbed by plants, but they can also be food for other microbes to grow, and as photosynthetic bacteria increase in the soil, other effective soil microorganisms increase. For example, in the plant roots, VA fungi that have the ability to supply insoluble phosphoric acid, which have not been absorbed, increase, and also promote nitrogen fixation ability by symbiotic with azotobacter, a kind of nitrogen fixative bacterium.

Lactic acid bacteria produce lactic acid with sugars from photosynthetic bacteria and homo bacteria. Lactic acid has a strong bactericidal activity and especially inhibits the action of harmful microorganisms and the rapid decay of organic matter. Lactic acid bacteria facilitate the decomposition of hardly decomposable organic substances such as lignin and cellulose sources, and also play an important role in preventing various harmful effects caused by undecomposed organic substances and fermenting and decomposing organic substances.

Homobacteria use the fermentation power of the homo-bacteria to change the secretion from the roots of crops, amino acids emitted from photosynthetic bacteria, sugars and organic matter in the soil into useful materials for crops, and the physiological activity produced by it and yeast The substance activates the division of roots and cells. It also plays a role in propagating other useful microorganisms (lactic acid bacteria, actinomycetes).

Actinomycetes are intermediates between bacteria and fungi that take the amino acids produced by photosynthetic bacteria and produce antibiotics.They act as inhibitors of pathogens or by preoccupying substances necessary for the growth of harmful fungi or bacteria. This creates a good environment for other microorganisms. Actinomycetes also break down pollutants such as dioxins, formaldehyde, and volatile organic compounds (VOCs). In addition, actinomycetes co-exist with photosynthetic bacteria and thus double the bacteriostatic action in the situation of mixing with photosynthetic bacteria rather than alone. Actinomycetes also play a role in facilitating the activity of azotobacter and VA fungal pathogens.

As mentioned above, useful microbial groups such as photosynthetic bacteria, lactic acid bacteria, yeast bacteria and actinomycetes contained in EM powders each play an important role, and in particular, the main role is photosynthetic bacteria. Although the activity of other microorganisms is maintained, photosynthetic bacteria also have a coexistence relationship with other microorganisms.

Therefore, the harmful microorganisms are suppressed by the action of the useful microbial group of the EM powder contained in the synthetic wood, and at the same time, the useful microorganisms are enriched, and the pollutants such as dioxin, formaldehyde and volatile organic compounds (VOC) are decomposed and the water quality is reduced. Purify, prevent rot, antioxidant, antibacterial and anti-odor can be greatly exerted.

The EM powder is prepared by aging and refining the EM stock solution, which is preferably contained in an amount of 0.05 to 1 parts by weight of EM powder. When the EM powder is contained in an amount of less than 0.05 parts by weight, the above-mentioned effects are insufficient, and the EM powder This is because excessively included costs increase.

In addition, in the heating and mixing step (S20), the additive is 0.5 to 5 parts by weight of a non-toxic stabilizer, 1 to 10 parts by weight of coupling agent, 0.1 to 1 part by weight of colorant, 0.1 to 0.5 part by weight of lubricant, 0.1 to 0.5 UV stabilizer At least one of parts by weight and 0.05 to 0.5 parts by weight of calcium carbonate may be added.

Additives act as an auxiliary material that affects the durability and processability of synthetic wood, which improves the processing performance of synthetic wood, improves its stability against oxidation or UV (UV) in use, improves mechanical properties, It also increases durability.

In other words, non-toxic complex is a material that is stable and harmless to human body, and coupling agents are used to improve the binding force between hydrophilic wood flour and hydrophobic synthetic resin, and the dimensional stability and impact of the product. It also affects the strength and dispersion of wood flour.

In addition, colorants impart color stability, exhibit a wood-like appearance, increase the resistance to ultraviolet rays (UV), and lubricants enhance the dispersibility of wood flour, Improve surface properties.

In addition, UV stabilizers block ultraviolet rays from sunlight to prevent mechanical degradation or discoloration in advance, which causes discoloration of cellulose and lignin, which are the main components of wood, when exposed to the outside. This is because discoloration occurs in the presence of ultraviolet (UV) light.

In addition, calcium carbonate is a mineral filler and is optionally used to improve long-term deformation during use such as impact strength, bending strength, thermal deformation, etc. of synthetic wood.

Further, in the heating and mixing step (S20), the natural material, the synthetic resin, and the additive are added to the blender under an image temperature of 130 ° C. or lower, and the mixture is prepared so that the wood flour cells are safely mixed with the PVC.

[Compression and forming step ( S30 )]

After performing the heating and mixing step (S20), the compression and molding step (S30) of compressing the heated and mixed mixture to form a base plate is performed.

The compression and molding step (S30) is to form the base plate while compressing the mixture prepared in the heating and mixing step (S20) at a temperature of 170 ~ 250 ℃, to prevent carbonization of wood flour cells, safety and rebound Do not exceed 250 ℃ in consideration.

At this time, the base plate is formed by mounting a die on a portion compressed and discharged by an extruder, and the base plate may be variously modified, such as an elongated plate or a square pillar having a hollow part, a pipe shape, etc. according to the shape of the die.

[Cooling stage ( S40 )]

 After the compression and molding step S30 is performed, a cooling step S40 for cooling the compressed and molded base plate is performed.

That is, the substrate is discharged from the extruder and cooled by the cooling water while passing through the cooling device, wherein the cooling step (S40) is made at an image temperature of 10 ℃ or less, thereby curing the substrate and obtain a high-quality synthetic wood products Can be.

And the cooled base plate is cut | disconnected and used according to a desired specification.

So far, the wood-containing synthetic wood and the method of manufacturing the same has been described as the main material, but in the case of eco-friendly synthetic wood and chaff powder containing chaff powder as the main material as shown in Figure 2 as the wood flour as chaff powder Only changes have been made and the rest of the configuration and effects are the same.

Chaff (chaff) is a by-product of rice that emerges as the outer bran of rice, and contains cellulose and lignin as the wood flour, and is used as a main component of synthetic wood to replace the wood flour, and the chaff powder contains 50 to 65 parts by weight. Preferably, when the chaff powder is contained in less than 50 parts by weight, the texture, such as wood of synthetic wood is significantly reduced, the elasticity of the wood is also reduced, if the chaff powder is contained in excess of 65 parts by weight, synthetic wood It is because the durability and strength of the can be lowered, and extrusion is difficult because the extrusion is not made properly.

Wood flour, starch and elvan powder are placed in a drier and dried and sterilized at 145 ° C. for 4 hours, and the dry and sterilized weight percent is added to 55% of wood flour by adding 20% of PVC and 20% of ABS, and also 1.5% of starch and elvan A mixture was prepared by mixing together 0.5% of the powder and 5% of other additives containing 0.1% of EM powder into the blender and mixing and heating in a temperature range not exceeding 130 ° C.

Then, the mixture was compressed with an extruder adjusted to 200 ° C. to form a base plate, passed through a cooling apparatus, cooled with cooling water, and then cut into an appropriate standard with a cutter to produce an eco-friendly synthetic wood according to the present invention.

In this way, the Korea Environmental Testing and Research Institute (KCL) was commissioned to evaluate and analyze the eco-friendly synthetic wood manufactured as described above. As a result of the test evaluation and analysis at the KCL, the test report as shown in FIGS. 3A and 3B is shown. Were obtained and summarized in Table 1.

[Table 1]

As can be seen from the results of Table 1, the amount of formaldehyde dissipation and total volatile organic compounds is significantly lower than the quality standards, and harmful products such as Pb, Cd, Cr, Hg, As are not detected, and are environmentally friendly and harmless to humans. You can check it.

In addition, the length coefficient of thermal expansion is significantly lower than the quality standard, it can be confirmed that the durability is excellent because there is little deformation due to shrinkage and expansion due to climate or temperature changes.

In addition, the sliding resistance is 0.54, which is much higher than the quality standard of 0.4, and thus, the eco-friendly synthetic wood according to the present invention has been shown to have a remarkably excellent sliding resistance, whereby the frictional resistance of the surface is also excellent as a flooring product. You can see that.

In addition, since the values of impact strength, maximum bending load, bending creep strain, impact resistance, warpage, freezing and thawing are all superior to quality standards, the eco-friendly synthetic wood according to the present invention has high mechanical strength, low deformation, and durability. It can be confirmed that excellent.

In addition, since the flame retardant carbonization length is 11cm, which is much smaller than the quality standard 20cm, and the duration of the flame retardant flame is also within 1 second and within 10 seconds of the quality standard, the eco-friendly synthetic wood according to the present invention is endowed with flame retardancy, so that the risk of fire occurs. It can be seen that the decrease.

In addition, the screw holding force is 1635, which is significantly higher than the quality standard of 400, and thus it can be confirmed that there is less shrinkage or cracking during use.

As described above based on the test report for the embodiment containing the wood powder as a main component, it will be apparent to those skilled in the art that the same effect will occur even when the rice husk powder and similar components are included.

After all, according to the eco-friendly synthetic wood according to the present invention and a method for producing the same, it is included elvan rock and excellent microorganism EM excellent in decomposability to decompose contaminants such as dioxin and to clean the water quality, excellent antioxidant, antibacterial and anti-odor It does not deteriorate or discolor the mechanical properties, alkalinizes acidic materials to prevent oxidation of synthetic wood, and improves the frictional resistance of the surface, so it has excellent anti-slip performance, low coefficient of thermal expansion, no deformation and durability. great.

The present invention is not limited to the above-described embodiments. Anything having substantially the same constitution as the technical idea described in the claims of the present invention and achieving the same operational effect is included in the technical scope of the present invention.

Claims (10)

50 to 65 parts by weight of wood powder, 0.5 to 5 parts by weight of starch, 0.1 to 5 parts by weight of ganban stone powder, 20 to 30 parts by weight of PVC, 5 to 20 parts by weight of ABS and 0.05 to 1 parts by weight of EM powder, which are useful microorganisms, and Eco-friendly synthetic wood molded by heat and compression.
50 to 65 parts by weight of chaff powder, 0.5 to 5 parts by weight of starch, 0.1 to 5 parts by weight of ganban stone powder, 20 to 30 parts by weight of PVC, 5 to 20 parts by weight of ABS and 0.05 to 1 parts by weight of EM powder, which are useful microorganisms, and additives Eco-friendly synthetic wood molded by mixing after heating.
3. The method according to claim 1 or 2,
The additive may be at least 0.5 to 5 parts by weight of a non-toxic stabilizer, 1 to 10 parts by weight of a coupling agent, 0.1 to 1 parts by weight of a colorant, 0.1 to 0.5 parts by weight of a lubricant, 0.1 to 0.5 parts by weight of a UV stabilizer, and 0.05 to 0.5 parts by weight of calcium carbonate. Eco-friendly synthetic wood, characterized in that one or more are added.
A drying and sterilizing step of drying and sterilizing the wood flour, starch and elvan powder in a drier;
50 to 65 parts by weight of wood powder, 0.5 to 5 parts by weight of starch, 0.1 to 5 parts by weight of ganban stone powder, 20 to 30 parts by weight of PVC, 5 to 20 parts by weight of ABS, and 0.05 to 1 parts by weight of EM powder, which is a useful microorganism, and a blender Heating and mixing step to prepare a mixture by heating in;
A compression and molding step of forming a base plate by compressing the heated and mixed mixture; And
The cooling and cooling step of cooling the base plate molded and molded.
A drying and sterilizing step of drying and disinfecting the chaff powder, starch and elvan powder in a drier;
50 to 65 parts by weight of chaff powder, 0.5 to 5 parts by weight of starch, 0.1 to 5 parts by weight of ganban stone powder, 20 to 30 parts by weight of PVC, 5 to 20 parts by weight of ABS and 0.05 to 1 parts by weight of EM powder, which are useful microorganisms, and additives Heating and mixing step of putting into a blender and heating to prepare a mixture;
A compression and molding step of forming a base plate by compressing the heated and mixed mixture; And
The cooling and cooling step of cooling the base plate molded and molded.
The method according to claim 4 or 5,
The drying and sterilization step is a method for producing an environmentally friendly synthetic wood, characterized in that made for 3 to 5 hours at a temperature of 130 ~ 150 ℃.
The method according to claim 4 or 5,
In the heating and mixing step, the additive is 0.5 to 5 parts by weight of non-toxic stabilizer, 1 to 10 parts by weight of coupling agent, 0.1 to 1 part by weight of colorant, 0.1 to 0.5 part by weight of lubricant, 0.1 to 0.5 part by weight of UV stabilizer, calcium carbonate 0.05 To at least one or more of 0.5 parts by weight is added to the method for producing an environmentally friendly synthetic wood.
The method according to claim 4 or 5,
The heating and mixing step is a method for producing an environmentally friendly synthetic wood, characterized in that made at an image temperature of 130 ℃ or less.
The method according to claim 4 or 5,
The compression and molding step is a method for producing an environmentally friendly synthetic wood, characterized in that at a temperature of 170 ~ 250 ℃.
The method according to claim 4 or 5,
The cooling step is a method for producing an environmentally friendly synthetic wood, characterized in that at 10 ℃ or less image temperature.

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