KR101238625B1 - Synthetic wood manufacturing method - Google Patents

Abstract

The present invention is to provide an eco-friendly synthetic wood manufacturing method capable of realizing a natural wood pattern, the present invention is a synthetic wood manufacturing method for producing a synthetic wood (2) by extrusion molding, polyethylene and polypropylene or thermoplastic resin A wood powder composition comprising a mixture of epoxy and phenol, a thermosetting resin, and a wood powder and a wood powder binder, and a color master batch mixed in the wood powder composition, wherein the wood powder composition and the color master batch are mixed and melted and extruded by a mold 17. It is an environmentally friendly synthetic wood manufacturing method capable of realizing a natural wood pattern so that the natural wood pattern (2a) is implemented on the surface of the synthetic wood (2) by the inorganic pigment contained in the color master batch by molding.

Description

Eco-friendly synthetic wood manufacturing method that can realize natural wood pattern {Synthetic wood manufacturing method}

The present invention relates to an eco-friendly synthetic wood manufacturing method capable of realizing a natural wood pattern, more specifically, mixed wood flour (natural wood reinforcement) to a thermoplastic resin (polyethylene, polypropylene) or a thermosetting resin (epoxy, phenol) which is an environmentally friendly material The present invention relates to an eco-friendly synthetic wood manufacturing method in which a natural wood pattern is always displayed even when the surface of a synthetic wood product is processed or worn by implementing a natural wood pattern on a non-toxic eco-friendly synthetic wood (WPC) extruded from a single material.

Synthetic wood (WPC), a non-toxic eco-friendly material, is used not only for the interior but also for exterior use, and it is growing remarkably in the landscaping area. In the past, most of the structural materials and finishing materials used for interior construction of buildings or interior decoration and landscaping are used. The building is mainly made of PVC, which is a polymer synthetic resin, and wood.

However, in general, wood is easily cracked and discolored so that there is a problem in aesthetics, and the wood itself is too fragile and easily damaged.

In order to solve the problems of natural wood, many polymer synthetic resins have been used as substitutes for wood. However, these products have too low natural degradability and cause environmental pollution at disposal. High disadvantages are harmful to the human body. In addition, the durability is superior to natural wood, but also has the disadvantage that the weight is too much.

Compared to the above, a more advanced technology has been developed in which wood powder is added to the polymer resin FV seed, and a transfer film, a natural wood film, and a FV seed veneer film in an extruded product in which the polymer resin FV seed and wood powder are mixed. Although there is a technology for bonding the back, these products also have problems in durability, such as discoloration from the irradiation of sunlight, and there is also a limit to give a feeling of natural wood, transfer film, natural to reproduce the natural wood pattern Bonds used to bond neck films, F.V. veneer films, etc. have a problem of release of formaldehyde gas, which causes fatal toxicity to the human body, and as a result, the use of the technique of attaching the film with such adhesives gradually increases. Regulation is being imposed.

The present invention has been developed to solve the above problems, the object of the present invention is to extrude the synthetic wood excellent in durability, etc., even in the discoloration is not good while giving the texture of natural wood so as to exhibit a natural wood replacement effect In order to provide a non-toxic eco-friendly synthetic wood (WPC) extruded wood flour (natural wood reinforcement) to a thermoplastic resin or thermosetting resin that is an environmentally friendly material. Synthetic wood (WPC), a non-toxic eco-friendly material, is widely used not only for interior but also for exterior. Especially, in the landscaping field, there is a tendency to grow remarkably. Since there is a disadvantage that does not fit with the surrounding environment because the pattern is not implemented, the present invention is to provide a method for manufacturing an eco-friendly synthetic wood in which the pattern of the natural wood is implemented in consideration of the disadvantages of the conventional synthetic wood It is for the purpose.

According to the present invention for solving the above problems, in the synthetic wood production method for producing the synthetic wood (2) by extrusion molding, polyethylene and polypropylene or thermoplastic resin and epoxy and phenol and wood powder and wood powder A mineral powder contained in the color master batch by extruding the wood powder composition mixed with a binder and a color master batch mixed with the wood powder composition and mixing and melting the wood powder composition and the color master batch by a mold 17 Provided is an eco-friendly synthetic wood manufacturing method capable of realizing natural wood pattern so that the natural wood pattern (2a) by the pigment is implemented on the surface of the synthetic wood (2).

In addition, according to the present invention, in the synthetic wood production method for producing the synthetic wood (2) by extrusion molding, a wood powder composition made by adding a polyolefin resin, wood powder, coupling agent, wood powder wax, moisture inhibitor and pigment; And a color master batch mixed with the wood flour composition, wherein the wood powder composition and the color master batch are mixed and melted and extruded by a mold 17 to form a natural wood pattern by the inorganic pigment contained in the color master batch. There is provided an eco-friendly synthetic wood manufacturing method capable of realizing the natural wood pattern so that 2a) is implemented on the surface of the synthetic wood (2).

According to the present invention, the pelletized wood powder composition and the capsule-like color master batch are introduced into an extruder, melted, and passed through a mold while being transferred to a twin screw to produce a plate-shaped non-toxic eco-friendly synthetic wood (WPC), into the inside of the extruder. The pelletized wood flour composition and the encapsulated collar masterbatch are melted by a heater, and the wood flour composition is completely melted so that the beige pigment basically contained in the wood flour composition becomes the ground color of the synthetic wood, while the capsuley color masterbatch is Not all are melted but only about 60% to 70% melt and at the same time the remainder spreads unevenly as it is broken by the twin screw provided inside the extruder, so that the natural wood pattern on the surface of synthetic wood can be realized. Provides the effect that natural patterns such as natural wood can be realized The.

In other words, according to the method for manufacturing non-toxic eco-friendly synthetic wood according to the present invention, in order to have a natural wood pattern, wood powder (natural wood reinforcement) is first processed in each color in advance, and then a specially manufactured color master batch and By mixing the base materials, the synthetic resin / wood powder extruded product black has the effect that the wood pattern and color of natural wood are better displayed than the synthetic resin / color master batch extruded product, and it does not discolor from sunlight irradiation. There is also an excellent effect in durability.

In addition, the present invention is excellent in aesthetics because it is not easily cracked and discolored as compared to natural wood, it has an effect that the strength itself is sufficient and does not easily damage.

In addition, in order to solve the problems that natural wood has, as a substitute for wood, it is superior in terms of natural degradability compared to the case of using a large number of polymer synthetic resin FVC products. Too high a density does not cause any harm to the human body.

In addition, unlike the conventional method of bonding a transfer film, a natural wood film, a F. C. veneer film, which reproduces the natural wood pattern to the base panel, it is not necessary to use a bond, so that formaldehyde gas is emitted, which causes fatal toxicity to the human body. There is no problem, and it is relatively free in the regulation due to the use of such adhesives.

Figure 1a schematically shows a conical twin screw employed in the synthetic wood production method of the present invention
Figure 1b schematically shows the appearance of the eco-friendly synthetic wood that is extruded using Figure 1a
Figure 2a schematically shows a panel twin screw employed in the synthetic wood production method of the present invention
Figure 2b is a schematic view showing the appearance of the eco-friendly synthetic wood that is extruded using Figure 2a
Figure 3 is a schematic view showing the structure of an extruder used in the synthetic wood production method of the present invention

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Figure 1a is a view schematically showing a conical twin screw employed in the synthetic wood manufacturing method of the present invention, Figure 1b is a view schematically showing the appearance of an environmentally friendly synthetic wood that is extruded using Figure 1a, Figure 2a the present invention Figure 2 schematically shows a panel twin screw employed in the synthetic wood production method of Figure 2b schematically shows the appearance of an environmentally friendly synthetic wood that is extruded using Figure 2a, Figure 3 is a synthetic wood production method of the present invention Figure schematically shows the extruder structure used for. Referring to this, the non-toxic eco-friendly synthetic wood manufacturing method of the present invention using the extruder 10 of Figure 3, by installing a screw (20A or 20B) shown in Figure 1a or 2a in the extruder 10 As shown in Figure 1b or 2b is a manufacturing method for making a synthetic wood 2 implemented natural wood pattern (2a).

The main components for producing non-toxic eco-friendly synthetic wood (2) by the present invention will be described with respect to the process of manufacturing eco-friendly synthetic wood (2) with these components.

The components of the synthetic wood (2) (WPC) is composed of a thermoplastic resin (polyethylene, polypropylene) or a thermosetting resin (epoxy, phenol), wood flour (natural wood reinforcement), wood flour binder, and color masterbatch, which are environmentally friendly materials. have. At this time, wood powder and wood powder binder are mixed with polyethylene, polypropylene or thermosetting resin epoxy and phenol to make wood powder composition in pellet form, and the wood powder composition and color master batch in pellet form are mixed in the extruder 10. By melting and passing the mold 17, a non-toxic eco-friendly synthetic wood 2 in the form of a panel is made. Specifically, the wood powder composition is formed by pelletizing a material in which 30-40 parts by weight of polyethylene and polypropylene or epoxy and phenol and 55 to 60 parts by weight of wood powder and 10 to 15 parts by weight of wood powder binder are mixed to form pellets. By mixing 3 to 5 parts by weight of the color master batch to 100 parts by weight of the composition, they are melted in the extruder 10 and passed through the mold 17 to form a non-toxic eco-friendly synthetic wood 2 in the form of a panel. For example, 3kg to 5kg of a color masterbatch is mixed with 100 kg of the wood flour composition to make a mixture for synthetic wood 2, and the mixture is melted in an extruder 10 and passed through a mold 17 to form a natural wood pattern 2a. It is possible to manufacture a synthetic wood (2) implemented. Here, the color master batch has a structure in which inorganic iron oxide color pigments are encapsulated in polyethylene and polypropylene, or inorganic iron oxide color pigments encapsulated in epoxy and phenol.

The components of the color master batch are a mixture of 50% polypropylene and polyethylene (or epoxy and phenol), 47% inorganic iron oxide pigments, 0.8% UV stabilizer, 2% titanium dioxide (TiO2) and 0.2% lubricant. The ingredients are mixed, melted and cured encapsulated. That is, the color master batch may be said to have an encapsulated form in which inorganic iron oxide pigments are embedded in polypropylene and polyethylene (or epoxy and phenol). Here, polypropylene and polyethylene may be mixed in a ratio of 50:50 or a ratio of 70:30, respectively. Of course, the epoxy and phenol can also be mixed in a ratio of 50:50 or 70:30, respectively.

The pellet-shaped wood flour composition and the capsule-type collar masterbatch are introduced into the extruder 10 shown in FIG. 3, melted, and passed through a mold 17 while being transferred to a twin screw 20A or 20B. (2) (WPC) will be manufactured.

At this time, the pellet-type wood powder composition and the capsule-type collar master batch injected into the extruder 10 are melted by a heater, and the pellet-type wood powder composition is melted at about 100 ° C. to 120 ° C. and the capsule-type color master batch is Melt at about 240 ℃ ~ 280 ℃, the temperature inside the extruder 10 is set in the range of about 140 ℃ ~ 200 ℃ When the wood powder composition is completely melted beige pigment (100 ℃ basically contained in the wood powder composition) Degree to green) becomes the ground color of the synthetic wood (2), while the capsule-type color masterbatch is not all melted, but only about 60% to 70% of the melt melts, while the remaining portion is a twin screw (within the extruder 10). 20A or 20B) by being spread unevenly, it is possible to implement a natural wood pattern (2a) on the surface of the synthetic wood (2). In the encapsulated collar masterbatch, the unmelted portion is broken into granules by twin screws (20A or 20B), which broken granules are made of polypropylene and polyethylene or by epoxy and phenol to red pigments and / or inorganic iron oxides. Since the black inorganic carbon black is encapsulated in a capsule form, the inorganic color pigment particle grains broken by the twin screw (20A or 20B) without dissolution are unevenly spread, and the surface of the synthetic resin extruded through the mold 17 is 1,000 won. It can be said that the wood pattern (2a) is implemented. For example, since the inorganic iron oxide color pigment is encapsulated in the polypropylene and polyethylene particles so that it does not melt and spreads unevenly, a natural wood pattern 2a is realized on the surface of the synthetic wood 2.

In the present invention, the pigment for the background color which is basically included in the wood powder composition may be employed in beige, and the pigment in the color master batch may be an inorganic iron oxide pigment having a red color or an inorganic carbon black having a black color. The color inorganic pigment is usually melted at about 100 ° C., and the red band-like inorganic iron oxide pigment is melted at 140 ° C. for a long time, and the black inorganic carbon black is usually melted at about 160 ° C., so it is beige during the melting process in the extruder 10. The color inorganic pigment melts completely to form the background color of the synthetic wood (2), and the red inorganic iron oxide and the black inorganic carbon black of the color master batch are melted in the range in which the color master batch melts in the range of 60% to 70%. In capsules (polypropylene and polyethylene or epoxy and phenol) The remaining inorganic pigments are to act to implement a non-uniform natural wood pattern (2a) on the surface of the synthetic wood (2) to be formed while spreading unevenly as it is.

On the other hand, according to the structure of the twin screw (20A or 20B) installed in the extruder 10 may be a natural wood pattern (2a) implemented on the surface of the synthetic wood (2). That is, when the conical twin screw 20A shown in FIG. 1A is used, as shown in FIG. 1B, a natural wood pattern 2a having a substantially ring shape is implemented, and the parallel twin screw 20B shown in FIG. 2A is illustrated. In the case of using the natural wood pattern (2a) of the substantially wavy (2a) shape as shown in Figure 2b can be implemented. The reason for using the twin screw (20A or 20B) in the present invention is that the pigment is an inorganic iron oxide-based, so that the master batch is not completely melted and the remaining part is crushed, so that the frictional force acts a lot. To get out of (17).

The characteristic of the synthetic wood manufacturing method of the present invention is that the synthetic wood (2) is not a simple color of the synthetic wood (2) at the time of extrusion molding, a non-uniform pattern (2a) is formed, thereby forming a non-uniform ring of natural wood texture Natural wood pattern (2a) like the shape can be implemented. That is, in the present invention, since the natural texture pattern 2a of the natural wood is implemented as it is, the main feature of the present invention is that it can give the same feeling as the natural wood in terms of touch and texture.

In addition, when changing the color and pattern of the pattern (2a) by changing the color of the background from beige to different colors can be reproduced natural wood pattern (2a) of a completely different color. The change of the ground color of the synthetic wood 2 can basically reproduce a number of colors and patterns 2a by combining eight colors of red, orange, yellow, green, blue, blue, purple and purple.

In addition, since the synthetic resin used in the present invention uses a thermoplastic resin (polyethylene, polypropylene) or a thermosetting resin (epoxy, phenol), which is harmless to a human body and is friendly to nature, it has environmentally friendly and non-toxic characteristics.

Meanwhile, in the present invention, polyethylene, polypropylene or epoxy, and phenol, which are the main components of the wood powder composition, are mixed between 30 parts by weight and 40 parts by weight. If the content is less than 30 parts by weight, the flexural strength is lowered. (Resilience and intrinsic elasticity) cannot be obtained and is not smooth even in formability.

In the present invention, in addition to sawdust as wood flour, bamboo flour crushed bamboo, chaff crushed wood flour, cedar wood flour can also be used.

In addition, the wood powder is used 55 to 60 parts by weight, the wood powder does not satisfy the bending strength requirements of the synthetic wood (2) when the lower limit is 55 parts by weight or less, and when the wood powder is 60 parts by weight or more, due to excessive wood powder content The surface of the wood 2 may be rough and wood delamination may be difficult to ensure high quality synthetic wood 2.

In addition, 10 to 15 parts by weight of the wood powder binder is used. At this time, the wood flour binder may be a coupling agent. When the amount of the wood flour binder used in the present invention is less than 10 parts by weight, the increase in strength is not sufficient, and the wood flour binder is insufficient in the functional aspect of the product, and when the wood powder binder is used in an amount of 15 parts by weight or more, the synthetic wood (2) The peeling phenomenon MIGRATION occurs in the surface part, and product property falls. Therefore, it is important to adjust the amount of wood flour binder used in the above range.

In addition, in the embodiment of the present invention, the saline wood powder is used in order to maintain the strength (bending strength) of the synthetic wood 2. Since the fibrous tissue and the like in the wood flour particles are more dense than that of the hardwood particles, much superior results can be obtained in comparison with the use of the hardwood wood flour in the strength of the synthetic wood 2.

Further, in the present invention, the use of coniferous wood powder is also superior in embedding. As described above, the fibrous structure of the coniferous wood powder is relatively dense and relatively heavier than that of the hardwood, so that there is no phenomenon of floating up when mixing the high-strength polyolefin-based resin and the coniferous wood powder. Better results can be obtained.

Polypropylene and polyethylene (or epoxy and phenol), which are components of the color master batch, use 50%. If the amount of polypropylene and polyethylene (or epoxy and phenol) used is lower than 50%, the color masterbatch will partially melt and not partially melt as described above, which may impede the maintenance of the color of the inorganic pigment, which is higher than 50%. The case is not preferable in terms of formability of the color master batch.

47% of the inorganic iron oxide pigment is used. When the inorganic iron oxide pigment is used at 47% or less, the wood pattern (2a) itself formed on the surface of the synthetic wood (2) is too blurred, so that the natural wood pattern (2a) feel can be sufficiently utilized. When the inorganic iron oxide pigment is used at 47% or more, wasteful pigment is generated, which is not good.

The UV stabilizer is 0.8%, when using the UV stabilizer 0.8% or less the color of the synthetic wood (2) discolored by the ultraviolet rays of the sun and the surface itself of the synthetic wood (2) Is not crumbly prevents the phenomenon that occurs like a powder, when using a UV stabilizer of more than 0.8% there is also a problem that the material goes into uselessly.

If titanium dioxide (TiO 2) is used at 2% or less, it is not sufficient in characteristics such as acid resistance and alkali resistance, and when using titanium dioxide (TiO 2) at 2% or more, relatively expensive resource waste may be caused.

If the lubricant is 0.2% or less, but the lubricant is 0.2% or less, the lubricity is not good, and the moldability is not good. If the lubricant is 0.2% or more, the lubricant is too high, and the inorganic iron oxide pigment is unevenly spread, so that the natural wood pattern (2a) There is room to be a problem in implementing, so let's set the lubricant to this value.

On the other hand, according to the method for producing a synthetic wood of the present invention, as shown in Figure 3, the pellets of the wood powder composition pellets are first put through the hopper 11 adjacent to the start of the extruder 10 to the first wood powder composition When melting and dissolving the color master batch in the front position of the extruder 10, unlike the wood flour composition, the dispersity of the color master batch is lowered that much, so that the phenomenon of uneven spreading can be more reliably synthesized. Natural wood pattern (2a) on the surface of the wood (2) has the advantage that can be more secure and secure implementation. The extruder 10 is provided with a drain hole 15 through which the air is drawn out, and the color master batch is introduced from the extruder 10 at the circumference between the drain hole 15 and the mold 17 (hopper 13). Etc.) to achieve a more natural wood pattern (2a) of the surface of the synthetic wood (2) as described above. For example, the pelletized wood powder composition is added first to dissolve first, and the color master batch is added at a more advanced position to allow relatively less melting, thereby increasing the probability of the presence of inorganic iron oxide pigments, thereby increasing the natural surface of the synthetic wood (2) surface. This will increase the reliability of the wood pattern (2a) implementation.

On the other hand, the present invention may employ other embodiments for different composition of the wood powder composition. That is, in another embodiment of the present invention, the wood powder composition constituting the component of the synthetic wood (2) is 25 to 30% by weight of polyolefin resin, 60 to 70% by weight of wood powder, 0.003 to 0.02% by weight of wood powder binder, 0.5 to wax for wood powder 2 weight%, the moisture inhibitor 0.1-2 weight%, and the pigment 0.5-10 weight% are added. Here, the pigment means a pigment for the background color of the synthetic wood (2). By mixing these components and molding into pellets to form a wood powder composition and the above-mentioned color master batch can be mixed and melted in the extruder 10 to pass through the mold 17 to produce a panel-like composite wood (2), Since the natural wood pattern 2a is implemented in the process of forming the synthetic wood 2 in the extruder 10, the duplicate description thereof will be omitted. Of course, as in the above embodiment, the color master batch is used by mixing 3 to 5 parts by weight of the color master batch to 100 parts by weight of the wood powder composition in pellet form.

In another embodiment of the present invention, the mixing ratio of each component of the wood flour composition has an important meaning. First, the polyolefin resin is used in the range of 25 to 30% by weight. If the amount of the high-impact polyolefin resin is less than 25% by weight, the flexural strength is lowered. Can't get)

In addition, the wood powder is used 60-70% by weight, but if the wood powder is lower than the lower limit 60% by weight, the flexural strength requirements of the synthetic wood (2) is not satisfied, and if the wood powder is 70% by weight or more, due to excessive wood powder content The surface of the wood 2 may be rough and wood delamination may be difficult to ensure high quality synthetic wood 2.

In another embodiment of the present invention, 0.003 to 0.02% by weight of the coupling agent is used as the wood powder binder. When the amount of the maleic anhydride used as the coupling agent is less than 0.003% by weight, the increase in strength is insignificant and it is insufficient in terms of the functionality of the product. When the amount of the maleic anhydride used is 0.02% by weight or more, the synthetic wood 2 is peeled off from the surface portion. MIGRATION occurs, resulting in deterioration of productability. If the maleic anhydride is contained in more than 0.02% by weight, the surface of the synthetic wood (2) floats and the surface peeling occurs, so 0.02% by weight or less is used. This is because when maleic anhydride is 0.02% by weight or more, there is no bonding with the remaining maleic anhydride, and maleic anhydride floats on the surface of the synthetic wood 2, so that a peeling phenomenon occurs on the surface of the synthetic wood 2. Therefore, it can be said that it is essential to adjust the amount of the wood powder binder used as the coupling agent in the above range.

In addition, in another embodiment of the present invention, the wood wax (lubricant) is 0.5 to 2% by weight, by smoothing the wood powder, the wood powder does not stick to the feed screw (20A, 20B) when forming the synthetic wood (2) It can be pushed out without it.

In another embodiment of the present invention, the components for forming the synthetic wood (2) are largely 30 to 40 parts by weight of thermoplastic resin (polypropylene, polyethylene) or thermosetting resin (epoxy, phenol), which is a base material, and wood powder ( Natural wood reinforcing agent) 52 to 57 parts by weight, wood powder binder 10 to 15 parts by weight and natural mineral pigment 2-3 parts by weight.

The natural inorganic pigments have different melting point temperatures, so that the melting point of the pigments varies depending on the temperature of the external heating during extrusion.

Beige pigments, which are inorganic pigments in wood flour (natural wood reinforcing agents), usually melt at about 100 ° C, so they are used as the base color of synthetic wood (2), and inorganic iron oxides that emit red color usually melt at about 140 ° C. It forms part of the ring pattern 2a. In addition, since the black carbon black inorganic carbon melts at about 160 ° C., it is contained in the red inorganic iron oxide to realize a clear ring pattern of wood texture (2a).

Since the conditions vary from time to time depending on the temperature conditions of heating (heating inside the extruder 10, etc.) during extrusion molding and the extrusion pressure, the pattern 2a of a constant shape is continuously formed by using inorganic pigments having different melting points. It does not come out but has the characteristic that the pattern 2a of non-uniform shape is molded. Using this feature, a non-uniform ring pattern 2a of natural wood texture is formed.

A feature of the present invention is that the product of the same pattern 2a is not continuously extruded, but the natural texture pattern 2a of the natural wood is reproduced as it is, so the touch and texture can give the same feeling as the natural wood. In addition, as in the above embodiments, when changing the color and pattern of the pattern (2a) by changing the color of the base from beige to another color of natural wood of a completely different color is reproduced.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various permutations, modifications, and changes can be made without departing from the spirit of the present invention. It will be apparent to those who have it.

10. Extruder 11, 13. Hopper
17. Mold 20A. Conical twin screw
20B. Parallel twin screw

Claims (8)

In the synthetic wood manufacturing method of manufacturing the synthetic wood (2) by extrusion molding, the wood powder composition which mixed polyethylene and polypropylene which are thermoplastic resins, epoxy and phenol which are thermosetting resins, and a wood powder and a wood powder binder, and mixes with the said wood powder composition And a wood master composition, wherein the wood powder composition and the color master batch are mixed and melted and extruded by a mold 17 to form a natural wood pattern 2a by using an inorganic pigment contained in the color master batch. 2) embodies on the surface;
The wood powder composition is mixed in the form of pellets by mixing the wood powder and the wood powder binder with the polyethylene and polypropylene or the epoxy and phenol, and the color master batch is made of polypropylene and polyethylene or epoxy and phenolic inorganic iron oxide pigments and UV (UV). Stabilizer, titanium dioxide (TiO2) and the lubricant is mixed to form a capsule containing the inorganic iron oxide pigment therein, the pellets of the wood powder composition and the color master batch of the capsule form is mixed and melted in the extruder (10) Eco-friendly synthetic wood manufacturing method that can implement a natural wood pattern, characterized in that the non-toxic eco-friendly synthetic wood (2) in the form of panels by passing through the mold (17).
delete According to claim 1, The wood powder composition is made of pellets made of a material in which 30 to 40 parts by weight of polyethylene and polypropylene or epoxy and phenol and 55 to 60 parts by weight of wood powder and 10 to 15 parts by weight of wood powder binder are mixed. The wood flour composition of 100 to 3 parts by weight of the color masterbatch 3 to 5 parts by weight of the synthetic wood (2) to achieve the eco-friendly synthetic wood manufacturing method, characterized in that for making the synthetic wood (2).
The color master batch according to claim 1, wherein the color master batch is mixed with 50% polypropylene and polyethylene or epoxy and phenol, 47% inorganic iron oxide pigment, 0.8% UV stabilizer, 2% titanium dioxide (TiO2) and 0.2% lubricant. Eco-friendly synthetic wood manufacturing method that can realize the natural wood pattern, characterized in that the capsule form.
According to claim 1, The wood pellet composition in the form of pellets and the color master batch in the form of capsules is injected into the inside of the extruder 10 and melted, the inside of the extruder 10 conical twin screw (20A) or parallel twin Eco-friendly synthetic wood manufacturing method that can implement a natural wood pattern, characterized in that the screw (20B) is provided to transfer the synthetic wood (2) raw material to be melted to the molding die (17).
The pellet composition of claim 1, wherein the pellets of the wood powder composition are first introduced at one side of the extruder 10 to melt the wood powder composition, and the color master batch is added at a front position of the extruder 10 for melting. By using the natural wood pattern (2a) on the surface of the synthetic wood (2), eco-friendly synthetic wood manufacturing method capable of realizing a natural wood pattern. delete delete

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