KR102414487B1 - Multi-functional eco friendly synthetic wood and a method for manufacturing the same - Google Patents

Abstract

One aspect of the present invention includes a body including a seating groove on one surface and two or more fixing grooves formed at both ends of the seating groove; a connecting member including a horizontal support part accommodated in the seating groove and two or more fixing parts extending downward from both ends of the horizontal support part and accommodated in the fixing groove; and a functional member coupled to the connecting member and exposed to one surface of the main body, wherein the ratio (w/D) of the width (w) to the depth (D) of the fixing groove is 0.05 to 0.5. and a manufacturing method thereof.

Description

Multifunctional eco-friendly artificial wood and manufacturing method thereof

The present invention relates to a multifunctional eco-friendly artificial wood and a method for manufacturing the same, and more particularly, to an eco-friendly artificial wood having a non-slip and/or label function and a method for manufacturing the same.

Artificial wood (or synthetic wood) having a texture and appearance similar to natural wood is being developed. In general, artificial wood can be manufactured by extruding or injection molding after mixing fibers such as wood flour and an easy-to-process thermoplastic resin. Since these fibers and thermoplastic resins are difficult to be uniformly mixed and dispersed, research and development to increase the mechanical properties of the artificial wood manufactured therefrom is active.

Artificial wood is used in various facilities such as city parks, national parks, walking trails, and trails. Artificial wood is widely installed from urban areas to forests, and it is necessary to use eco-friendly materials in consideration of human accessibility and greening purposes. In particular, in the case of an artificial wooden deck mainly used for decks, hiking trails, sidewalks and walking trails, a predetermined non-slip member is coupled to the surface to prevent slippage of pedestrians and injuries resulting therefrom.

In relation to this, Korean Patent Registration Nos. 10-1079307 and 10-1196696 disclose deck wood in which a non-slip member is seated and coupled to a predetermined groove provided in the artificial wood body, but the artificial wood body and the non-slip member There is a problem in that the coupling depends only on the tolerance between the groove and the non-slip member, and the non-slip member is seated relatively shallowly and is easily separated by an external impact repeatedly applied.

Korea Patent Registration No. 10-1264085, etc. tried to mechanically and structurally prevent the non-slip member from arbitrarily separating by combining the non-slip member in a groove tapered toward the surface of the artificial wood body. However, the tapered groove Since the strength of the upper edge of the is weak, there is a problem that it is easily broken.

Korean Patent Registration Nos. 10-1760236, 10-1675053, etc. insert molding artificial wood in a state where the non-slip member is fixed at a predetermined position in the mold, or install the non-slip member in a predetermined groove provided in the artificial wood body. , the step difference between the surface of the artificial wood and the surface of the non-slip member was substantially removed to minimize the risk of walking obstruction and falling due to the step, but the combination of the artificial wood body and the non-slip member is only possible through chemical means such as adhesion, curing, and fusion. Therefore, there is a problem in that the non-slip member is easily separated by an external impact that is repeatedly applied.

Korea Patent No. 10-2166133 can solve the above problem by combining a non-slip member having a plurality of locking parts in the height direction and an artificial wood body having a groove having a shape corresponding to the shape of the locking part. As the accommodating groove penetrates to the center of the artificial wood body and is formed, the thickness of the artificial wood body in the corresponding area becomes significantly thinner than that of the peripheral portion, so there is a problem in that the strength of the artificial wood is weakened. In addition, since the non-slip member inserted and coupled to this groove is made of an elastic material such as rubber, the strength of the artificial wood cannot be adequately reinforced, and the inside (center) of the artificial wood cannot be firmly supported, so expansion, There is a problem in that it is difficult to cope with deformation such as shrinkage.

Air pollution caused by soot and exhaust gas generated by rapid industrial growth and economic development is increasing rapidly. Korea is in a worse environment than other countries due to the large influx of yellow dust and fine dust from China and air pollutants generated in Korea. is currently unable to pay.

Recently, a technology that can reduce fine dust by applying a photocatalyst is being studied. In particular, although the demand for building materials using natural wood is increasing, there is a problem that it is difficult to meet this demand with only natural wood, and it is easily deformed by moisture and mold is easily generated.

In this regard, according to Korean Patent Registration Nos. 10-2146090 and 10-2070681, the compatibility between wood flour and resin and the durability of artificial wood manufactured therefrom are improved by forming a base layer including chemically surface-modified wood flour. And, by introducing a photocatalyst to the surface layer, it is possible to impart eco-friendliness to the artificial wood. However, color interference between the pigment and titanium dioxide, such as the color of the pigment applied to the surface layer being arbitrarily faded by white titanium dioxide applied as a photocatalyst, is a factor that makes it difficult to realize the color and texture of natural wood on the surface of artificial wood. do.

On the other hand, even according to the prior art described above, there is a limit in that it is impossible to control the concentration gradient for each region of the photocatalyst particles in the surface layer, for example, the distribution along the thickness (height) direction or the distribution in the protrusions and grooves constituting the unevenness. . In particular, since the photocatalyst particles settled at the bottom of the surface layer cannot be easily exposed to ambient light, that is, the ambient light cannot penetrate up to the precipitated photocatalyst particles, it is difficult for the precipitated photocatalyst particles to have a required level of catalytic activity. .

The present invention is to solve the problems of the prior art described above, and an object of the present invention is to provide an artificial wood to which a functional member is combined, the binding force of the functional member, resistance to deformation of the artificial wood, mechanical properties and maintainability A multifunctional eco-friendly artificial wood that can realize and improve photocatalytic activity and external physical properties of artificial wood in a balanced way by precisely controlling the concentration gradient of photocatalyst particles included in the surface area of the artificial wood by area To provide a manufacturing method.

One aspect of the present invention includes a body including a seating groove on one surface and two or more fixing grooves formed at both ends of the seating groove; a connecting member including a horizontal support part accommodated in the seating groove and two or more fixing parts extending downward from both ends of the horizontal support part and accommodated in the fixing groove; and a functional member coupled to the connecting member and exposed to one surface of the main body, wherein the ratio (w/D) of the width (w) to the depth (D) of the fixing groove is 0.05 to 0.5. provides

In an embodiment, the fixing part may include at least one protrusion, and a height of the protrusion may be less than or equal to a width of the fixing groove.

In one embodiment, the main body further includes a locking groove extending from the end of the fixing groove, the width of the locking groove is greater than the width of the fixing groove, the connecting member is extended from the end of the fixing portion It further includes a locking portion accommodated in the locking groove, the width of the locking portion may be greater than the width of the fixing portion.

In one embodiment, the connecting member may further include a guide part extending upward from both ends of the horizontal support part and including a fastening groove formed in a horizontal direction.

In one embodiment, the functional member includes a substrate and at least one of a non-slip part and a light emitting part formed on an upper surface of the substrate, both ends of the substrate are accommodated in the fastening groove, and the lower surface of the substrate is the horizontal support part can be supported by the upper surface of

In an embodiment, the non-slip part may be formed of an aggregate of ceramic particles fused to each other.

In an embodiment, the light emitting part may be formed of a molded body including a light-transmitting resin and a photosensitive pigment dispersed in the light-transmitting resin.

In an embodiment, the main body includes a core part and a skin part provided on at least a part of a surface of the core part, the core part includes a first polymer resin and a filler, and the skin part includes a second polymer resin and photocatalyst particles The surface of the skin part includes a wood pattern formed by a concave-convex structure including protrusions, the content of the photocatalyst particles in the skin part is 0.1 to 5% by weight, and the content of the photocatalyst particles in the protrusions is 5 to 30% by weight, and in the skin part, the ratio (B/ A) may be 2-20.

In one embodiment, the core part further comprises a fibrous powder, the content of the fibrous powder in the core part may be 30 to 70% by weight.

Another aspect of the present invention comprises the steps of: (a) discharging a first composition comprising the first polymer resin and the filler through a main extruder to form the core; (b) discharging a second composition including the second polymer resin and the photocatalyst particles to at least a portion of the surface of the core part through an auxiliary extruder to form the skin part; (c) pressing the surface of the skin part with a patterning roll preheated to 400 to 500° C. to form the wood pattern formed by the concave-convex structure including the protrusions on the surface of the skin part, wherein the photocatalyst included in the skin part manufacturing the body by moving at least some of the particles to the protrusion; (d) forming the seating groove on one surface of the main body and two or more fixing grooves at both ends of the seating groove; (e) seating the horizontal support part in the seating groove, inserting the fixing part into the fixing groove, and coupling the connecting member to the main body; and (f) coupling the functional member to the upper surface of the horizontal support part.

An artificial wood according to an aspect of the present invention includes: a body including a seating groove on one surface and two or more fixing grooves formed on both ends of the seating groove; a connecting member including a horizontal support part accommodated in the seating groove and two or more fixing parts extending downward from both ends of the horizontal support part and accommodated in the fixing groove; and a functional member coupled to the connection member and exposed to one surface of the main body; by designing the ratio (w/D) of the width (w) to the depth (D) of the fixing groove to be 0.05 to 0.5 , it is possible to improve the bonding strength of the functional member, resistance to deformation of the artificial wood, mechanical properties, and maintainability.

In addition, the main body includes a core part and a skin part provided on at least a part of a surface of the core part, and the surface of the skin part includes a wood pattern formed by a concave-convex structure including projections, and the content of photocatalytic particles in the projections By controlling the content of 5 to 30% by weight, it is possible to realize and improve the photocatalytic activity and external physical properties of the artificial wood in a balanced way.

In addition, in the method of manufacturing an artificial wood according to another aspect of the present invention, in the step of forming a wood pattern on the surface of the skin part, the surface of the skin part is pressed with a patterning roll preheated to a preset temperature to be included in the skin part By moving at least some of the photocatalyst particles to the protrusion, the above-described effect may be realized.

It should be understood that the effects of the present invention are not limited to the above-described effects, and include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a perspective view of an artificial wood according to an embodiment of the present invention.
2 is a cross-sectional view of the main body, artificial wood, and the connecting member with respect to the cross-section (P) of FIG.
3 is a cross-sectional view of a fixing part according to an embodiment of the present invention.
4 is a cross-sectional view of a body, an artificial wood, and a connecting member according to another embodiment of the present invention.
5 is a perspective view and a cross-sectional view of a functional member according to an embodiment of the present invention.
6 is an enlarged view of area A of FIGS. 2 and 4 .
7 shows a method of manufacturing a body according to an embodiment of the present invention.
8 shows an extruder according to an embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be embodied in several different forms, and thus is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part is "connected" with another part, this includes not only the case where it is "directly connected" but also the case where it is "indirectly connected" with another member interposed therebetween. . In addition, when a part "includes" a certain component, this means that other components may be further provided without excluding other components unless otherwise stated.

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

1 is a perspective view of an artificial wood according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a body, an artificial wood, and a connecting member with respect to the cross section P of FIG. 1 .

1 and 2, the artificial wood according to an embodiment of the present invention, a body including a seating groove 110 on one surface and two or more fixing grooves 120 formed at both ends of the seating groove 110 ; A connecting member 310 including a horizontal support part 311 accommodated in the seating groove 110 and two or more fixing parts 312 extending downward from both ends of the horizontal support part 311 and accommodated in the fixing groove 120 . ); and a functional member 320 coupled to the connection member 310 and exposed to one surface of the main body; a ratio of the width w to the depth D of the fixing groove 120 (w/ D) may be 0.05-0.5.

The body may include a seating groove 110 on one surface thereof and two or more fixing grooves 120 formed at both ends of the seating groove 110 . The seating groove 110 is formed with a predetermined area and depth on one surface of the main body to accommodate the horizontal support part 311 of the connecting member 310 , and the standard of the seating groove 110 is the horizontal It may be determined by the standard of the support part 311 . For example, the depth and area of the seating groove 110 may be the same as the thickness and area of the horizontal support part 311 , respectively, and in this case, the horizontal support part 311 is provided in the seating groove 110 . can be combined by dimensional tolerance of In particular, by designing the sum of the depth of the seating groove 110 and the thickness of the horizontal support part 311 or the thickness of the horizontal support part 311 and the functional member 320 coupled thereto to be the same, the horizontal The step difference between the surface of the support part 311 and/or the functional member 320 and one surface of the main body may be substantially removed, thereby minimizing the risk of walking and falling due to the step difference.

The fixing groove 120 is formed with a predetermined depth and width from both ends of the seating groove 110 toward the center of the main body to accommodate the fixing part 312 of the connecting member 310, and the The size of the fixing groove 120 may be determined by the size of the fixing part 312 . For example, the depth and width of the fixing groove 120 may be the same as the length and width of the fixing part 312 , respectively. It can be joined by a fitting method due to the dimensional tolerance of The ratio (w/D) of the width (w) to the depth (D) of the fixing groove 120 may be 0.05 to 0.5, and accordingly, the ratio of the width to the length of the fixing part 312 is also It can be designed in the range of 0.05 to 0.5. The ratio (w/D) may be calculated through the depth and width of the same unit (dimension). If the ratio (w/D) of the width (w) to the depth (D) of the fixing groove 120 is less than 0.05, the fixing part penetrates into the interior of the main body through the fixing groove 120 and is inserted ( 312) is reduced, there is a problem in that it is difficult to respond to deformation such as expansion and contraction of the body, and if it exceeds 0.5, the fixing part 312 cannot be firmly coupled to the fixing groove 120, so the external It can be easily separated by impact.

The connecting member 310 is a member for connecting the main body and the functional member 320 to fix the functional member 320 to one surface of the main body, and may have the same function as a conventional “bracket”. have.

The connecting member 310 includes a horizontal support part 311 accommodated in the seating groove 110 and two or more fixing parts 312 that extend downward from both ends of the horizontal support part 311 and are accommodated in the fixing groove 120 ). may include The horizontal support part 311 may be accommodated in the seating groove 110 and upwardly support the functional member 320 on its upper surface in the area direction.

The fixing part 312 may extend downward from both ends of the horizontal support part 311 to be accommodated in the fixing groove 120 , and the number of the fixing parts 312 depends on the number of the fixing grooves 120 . It may be determined, and preferably, the number of the fixing part 312 and the fixing groove 120 may be the same. For example, the number of the fixing part 312 and the fixing groove 120 may be two, respectively, and, if necessary, may be three. When the number of the fixing part 312 and the fixing hum is three, each of the two fixing parts 312 extending downward from both ends of the horizontal support part 311 is the added one fixing part 312. Any area between, preferably, may extend downwardly from the center of the horizontal support part 311 , and the fixing groove 120 may be additionally extended according to the position and standard of the one additional fixing part 312 . can be formed.

It may extend downward from the center, and the fixing part 312 is inserted and accommodated in the fixing groove 120 to firmly fix the connecting member 310 to one surface of the main body, and at the same time, from one surface of the main body. It is possible to prevent the body from being deformed (expanded or contracted) by the external environment by penetrating toward the center to a predetermined depth to support the internal structure of the body. The penetration depth of the fixing part 312 with respect to the main body may be designed in a range of 30 to 70% of the thickness of the main body from one surface of the main body. If the penetration depth of the fixing part 312 is less than 30% of the thickness of the body, the connection member 310 is not only easily separated from the fixing groove 120, but also the supporting effect for the internal structure of the body is reduced. If it is more than 70%, the strength of the part through which the fixing part 312 penetrates of the main body may be significantly weakened.

3 is a cross-sectional view of a fixing part 312 according to an embodiment of the present invention. Referring to FIG. 3(a), the width of the fixing part 312 may be designed to be the same as the width of the fixing groove 120. In this case, both sides of the fixing part 312 and the fixing groove ( The inner surface of 120 may be in full contact so that the fixing part 312 may be coupled to the fixing groove 120 . Referring to FIGS. 3(b) to 3(d), the fixing part 312 may include at least one protrusion, and the protrusion may include injection, bending, It may be formed to a predetermined height by a perforation, a press, or the like. The height of the protrusion may be less than or equal to the width of the fixing groove 120 , and preferably, may be the same as the width of the fixing groove 120 . In this case, the peak of the protrusion of the fixing part 312 is in contact with one surface of the fixing groove 120 , and the end of the other part is in contact with the other surface of the fixing groove 120 , so that the fixing part is in contact with the other surface of the fixing groove 120 . 312 may be coupled to the fixing groove 120 .

4 is a cross-sectional view of the body, artificial wood, and the connecting member 310 according to another embodiment of the present invention. 4, the main body further includes a locking groove 130 extending from the end of the fixing groove 120, the width of the locking groove 130 is greater than the width of the fixing groove 120, The connecting member 310 further includes a locking part 313 extending from an end of the fixing part 312 to be accommodated in the locking groove 130, and the width of the locking part 313 is equal to the width of the fixing part ( 312) may be larger than the width.

In the case of the artificial wood according to FIG. 2, the coupling of the main body and the connecting member 310 depends only on the fitting based on the width of the fixing groove 120 and the fixing part 312, and the other fixing parts ( Mechanical and physical means for preventing the 312 from being separated from the fixing groove 120 are lacking. In contrast, the main body further includes a locking groove 130 extending from the end of the fixing groove 120 , and the width of the locking groove 130 may be larger than the width of the fixing groove 120 , The connecting member 310 further includes a locking part 313 extending from an end of the fixing part 312 to be accommodated in the locking groove 130 , and the width of the locking part 313 is equal to that of the fixing part 312 . ) can be larger than the width of Since the width of the locking part 313 accommodated in the locking groove 130 is greater than the width of the fixing groove 120 , the fixing groove 120 of the locking part 313 accommodated in the locking groove 130 . Since the vertical upward movement through the is limited, the connecting member 310 can be more firmly coupled to the main body.

In addition, since the locking part 313 extends from the end of the fixing part 312 to a predetermined length in the horizontal direction, the locking part 313 is the fixing part penetrating in the vertical direction toward the inside of the main body ( 312) by supporting the internal structure of the main body in horizontal and vertical directions, it is possible to more effectively prevent the main body from being deformed (expanded or contracted) by an external environment.

Referring to FIGS. 2(c) and 4(c), the connecting member 310 extends upward from both ends of the horizontal support part 311 and a guide part 314 including fastening grooves 315 formed in a horizontal direction. ) may be further included. The fastening groove 315 is a path through which both ends of the functional member 320 or both ends of the substrate 321 constituting the functional member 320 can be inserted and moved from one end surface of the connecting member 310 . can provide The size of the fastening groove 315 may be determined by the both ends of the functional member 320 inserted therein, or the size of the substrate 321 constituting the functional member 320 , and accordingly, both are It can be coupled by a fitting method by a predetermined dimensional tolerance.

In addition, when the connection member 310 further includes the guide part 314 , the connection member 310 includes the fixing part 312 extending downward from both ends with respect to the horizontal support part 311 , and , since the cross-sectional shape of the connecting member 310 including the guide portion 314 extending upward is substantially “H”-shaped, the rigidity of the connecting member 310 and structural stability thereof can be improved. .

The material of the connecting member 310 may be, for example, metal, ceramic, resin, rubber, etc., preferably, metal, and more preferably, light weight of artificial wood and thus construction convenience and durability. , may be aluminum that can implement mechanical properties in a balanced manner, but is not limited thereto. In addition, the above-described structure and shape of the connecting member 310 may be formed by injection, bending, or pressing of the material, and preferably, may be formed by injection of aluminum, but is not limited thereto.

The functional member 320 may be coupled to the connecting member 310 and exposed to one surface of the main body, that is, to an external environment, to exhibit predetermined functionality. For example, the functional member 320 can prevent a pedestrian from slipping through a non-slip part to be described later, and/or provide a predetermined visibility and a corresponding display function through the light emitting part to secure and improve safety based on vision. and can implement various aesthetic effects.

The functional member 320 may include a substrate 321 and at least one of a non-slip part 322 and a light emitting part formed on the upper surface of the substrate 321 . Both ends of the substrate 321 may be accommodated in the fastening groove 315 , and a lower surface of the substrate 321 may be supported by an upper surface of the horizontal support unit 311 . The material of the substrate 321 may be, for example, metal, ceramic, resin, rubber, etc., preferably, may be a metal, and more preferably, implement a balanced implementation of corrosion resistance, durability, and mechanical properties. It may be stainless steel (SUS), but is not limited thereto. The shape of the substrate 321 may be a flat plate shape so that both ends thereof can be fastened to the fastening groove 315, but is not limited thereto.

5 is a perspective view and a cross-sectional view of a functional member 320 according to an embodiment of the present invention. Referring to FIG. 5 , the non-slip part 322 formed on the upper surface of the substrate 321 may be formed of an aggregate of ceramic particles fused to each other, and the aggregate is a single continuous pattern on the upper surface of the substrate 321 . and/or may have a plurality of discontinuous patterns.

The ceramic particles may include, for example, one selected from the group consisting of iron (stainless steel), aluminum, magnesium, tungsten, zirconium, cobalt, copper, oxides of one or more of these, and hydroxides of one or more of these, Preferably, it may be made of tungsten and/or an oxide thereof, but is not limited thereto. When the ceramic particles are made of tungsten and/or an oxide thereof, the aggregate is a particle or powder of tungsten and/or its oxide provided in a predetermined pattern on the upper surface of the substrate 321 at 1,000 ° C. It can be obtained by heat treatment at a temperature of 1,150° C. for 0.5 to 2 hours, preferably, for 0.5 to 1 hour. The ceramic particles are fused to each other by the heat treatment, and since the particle shape is maintained in the aggregate, a non-slip property may be imparted to the upper surface of the substrate 321 and the upper surface of the aggregate by providing a predetermined roughness. The roughness applied to the upper surface of the aggregate may be determined by the size of the ceramic particles, that is, the average particle size.

The light emitting part may be formed of a molded body including a light-transmitting resin and a photosensitive pigment dispersed in the light-transmitting resin, and the molded body has a single continuous pattern and/or a plurality of discontinuous patterns on the upper surface of the substrate 321 . can have The light emitting part may be formed of a molded body including a light-transmitting resin and a photosensitive pigment dispersed in the light-transmitting resin. In addition, when the substrate 321 is made of a material including the light-transmitting resin, the functional member 320 may be formed by extrusion and/or injection of a predetermined resin composition including the light-transmitting resin. ) and the light emitting part may be provided as an integrally formed light emitting body. Both ends of the light emitting body may be accommodated in the fastening groove 315 , and a lower surface of the light emitting body may be supported by an upper surface of the horizontal support part 311 .

As used herein, the term "light transmittance" refers to the property of a predetermined material and/or an object to transmit predetermined light, in particular, transparency to translucency ( It can be understood to mean semi-transparency). In addition, as used herein, the term "photo-sensitivity" refers to a property in which physical properties, activity, luminescence, etc. are converted or converted by light during external stimulation. In particular, for the photosensitive pigment, the axis It may be understood to mean light property, light absorption property, phosphorescence property, fluorescent property, luminous property, and the like.

In the light emitting part and/or the light emitting body, the photosensitive pigment may constitute a discontinuous phase, and the light-transmitting resin may constitute a continuous phase. That is, in the light emitting part and/or the light emitting body, the photosensitive pigment may be uniformly dispersed in a discontinuous phase in the continuous phase matrix including the light transmitting resin. Each particle constituting the photosensitive pigment may be dispersed independently of each other, and in some cases, an aggregate in which two or more particles are aggregated may be dispersed in the continuous phase matrix.

The light-transmitting resin may be a thermoplastic resin, a thermoplastic elastomer, a thermosetting resin, rubber, or the like, and as long as it can impart predetermined transparency or translucency to the light-emitting part and/or the light-emitting body, the type thereof is not particularly limited.

In the light-emitting unit and/or the light-emitting body, the light-transmitting resin constitutes a continuous-phase matrix, and the continuous-phase matrix allows light applied from the outside to penetrate not only the surface of the light-emitting unit and/or the light-emitting body, but also the inside. A pathway may be provided, and thus, the photosensitive pigment included in the pathway may be activated.

The photosensitive pigment may be one selected from the group consisting of a phosphorescent pigment, a fluorescent pigment, a luminous pigment, and a combination of two or more thereof, and preferably, a phosphorescent pigment and/or a luminous pigment, but is not limited thereto. The type of the photosensitive pigment is not particularly limited as long as it has photoluminescence, light absorption, phosphorescence, fluorescence, and luminous properties that can last for a predetermined period of time.

When the photosensitive pigment is present in the form of particles, the average particle size of the photosensitive pigment may be 0.01 to 1,000 μm, preferably, 0.01 to 500 μm, more preferably, 0.01 to 100 μm, but is not limited thereto. .

When the photosensitive pigment is present in a liquid and/or particulate form and is uniformly dispersed in a discontinuous phase in the light-transmitting resin in the light-emitting part and/or the light-emitting body, the photosensitive pigment may be caused by impact, contact, friction, weathering, etc. Even when the light emitting unit and/or the light emitting body is damaged or worn, the luminous performance of the light emitting unit and/or the light emitting body may be maintained.

On the other hand, the connection member 310 and the substrate 321 may be integrally formed by a single member. In this case, the shape of the connection member 310 is simplified, so the structure and process of a mold for manufacturing the connection member 310 is simplified. The process of inserting the substrate 321 into the fastening groove 315 of the connecting member 310 as described above can be omitted, and thus the construction convenience can be improved.

6 is an enlarged view of area A of FIGS. 2 and 4 . 2, 4 and 6 , the body according to an embodiment of the present invention includes a core part 100 and a skin part 200 provided on at least a portion of a surface of the core part 100 . can do. As used herein, the term “core part 100” refers to an inner region of the main body among plate-shaped artificial wood, and “skin part 200” refers to at least a portion of the surface of the core part 100, preferably is provided on the entire surface of the core part 100 and means an external region of the main body among the artificial wood exposed to the outside. The core part 100 and the skin part 200 may be integrally formed by a method to be described later, but the composition for forming the core part 100 and the skin part 200 is different, and such a composition Since each is input through a separate device, the core part 100 and the skin part 200 may be independent components partitioned by a predetermined interface. The interface does not include a separate material and/or member for bonding the core part 100 and the skin part 200, but inhibits the coupling between the core part 100 and the skin part 200. Since it does not include any pores and/or voids, the core part 100 and the skin part 200 may be firmly coupled to each other.

The core part 100 may include a first polymer resin and a filler. The first polymer resin may be a thermoplastic resin. The thermoplastic resin is, for example, one selected from the group consisting of polyethylene, polypropylene, polybutylene, polymethylpentene, ethylene vinyl acetate, ethylene butyl acrylate, ethylene ethyl acrylate, and combinations or copolymers of two or more thereof. of polyolefin, acrylonitrile-butadiene-styrene copolymer (ABS), polyvinyl chloride (PVC), or a combination thereof, preferably, polyvinyl chloride, but is limited thereto not.

The filler may contribute to durability and mechanical properties of the core part 100 . The filler is, for example, one particulate, spherical and/or plate-shaped filler selected from the group consisting of hard coal, calcium carbonate, silica, talc, vermiculite, mica, aluminum hydroxide, aluminum oxide, barium sulfate, and combinations of two or more thereof. may include, preferably, vermiculite, more preferably, expanded vermiculite, but is not limited thereto. The expanded vermiculite has a very low specific gravity of about 0.15, which is advantageous for reducing the weight of the core part 100 and the body including the same, and emitting negative ions and far-infrared rays can be obtained.

In addition, the filler may further include a fibrous filler. The fibrous filler may be, for example, one selected from the group consisting of glass fibers, carbon fibers, cellulose fibers, engineering plastic fibers, ceramic fibers, and combinations of two or more thereof, preferably, glass fibers and/or It may be a cellulose fiber, but is not limited thereto.

The fibrous filler may be such that the particulate, spherical and/or plate-shaped fillers in the core part 100 are fixed in a uniformly dispersed state, and the first polymer resin constituting the continuous phase in the core part 100 . Among the fibrous fillers dispersed therein, adjacent ones form at least one intersection and/or contact point, thereby contributing to improving the strength and durability of the core part 100 .

The content of the first polymer resin in the core part 100 may be 20 to 70% by weight, preferably, 20 to 50% by weight. If the content of the first polymer resin in the core part 100 is less than 20% by weight, the dispersibility of the filler and/or other particulate materials included in the core part 100 may be reduced, and if it exceeds 70% by weight Durability and mechanical properties of the core part 100 and the body including the same may be reduced.

The core part 100 may further include a fibrous powder. The fibrous powder may be powdered to have a particle size of about 30 to 120 mesh by washing and drying wood, waste wood, agricultural products, waste agricultural products, etc. with water, and then pulverizing them. The content of the fibrous powder in the core part 100 may be 30 to 70% by weight. If the content of the fibrous powder in the core part 100 is less than 30% by weight, the durability and mechanical properties of the core part 100 and the body including the same may be reduced, and if it exceeds 70% by weight, the core part 100 ) may reduce the dispersibility of fillers, fibrous powders and/or other particulate matter contained in it.

The core part 100 may further include one additive selected from the group consisting of an impact modifier, a processing aid, a lubricant, a stabilizer, a plasticizer, a foaming agent, a pigment, and a combination of two or more thereof.

The impact modifier may contribute to the impact resistance of the core part 100 and the main body including the core part 100 by imparting a predetermined elasticity to the core part 100 . The impact modifier may be a thermoplastic resin, and preferably, a thermoplastic elastomer or rubber resin, but is not limited thereto. The impact modifier may be, for example, an acrylonitrile-butadiene-styrene copolymer (ABS), but is not limited thereto.

The processing aid may contribute to processability and workability of the first polymer resin. Specifically, the processing aid promotes the melting of the first polymer resin and other resin components when the composition including the first polymer resin and the filler is foamed and extruded to form the core part 100, It is possible to provide a predetermined viscoelasticity and uniformly maintain the cell structure of the foamed-extruded core part 100 . The processing aid may be, for example, a methyl methacrylate-ethyl acrylate-butyl acrylate copolymer, but is not limited thereto.

The lubricant serves to reduce friction between polymer chains during processing of the first polymer resin (internal lubricant) or to reduce friction between the first polymer resin and a processing machine (external lubricant). In particular, if a lubricant is not added during processing of polyvinyl chloride, local friction occurs and the temperature of the molded body rises above the thermal deformation temperature of the resin, which may cause deformation such as pigmentation, and increase friction between the resin and the processing machine. Therefore, not only thermal deformation of the resin due to adhesion of the resin occurs, but also the maintainability of the processing machine may be significantly reduced.

The internal lubricant may be, for example, calcium stearate, barium stearate, magnesium stearate, fatty alcohol, etc., and preferably may be calcium stearate that can also serve as a heat stabilizer, but is limited thereto not.

The external lubricant may be, for example, polyethylene wax, oxidized polyethylene wax, paraffin wax, paraffin oil, amide wax, a metal salt of a fatty acid, zinc stearate, lead stearate, etc., and preferably serves as a heat stabilizer. It may be a combination of a polyethylene wax and a metal salt of a fatty acid, but is not limited thereto.

In addition, the lubricant may further include an ester-based lubricant such as glycerin monostearate, glycerin monooleate, and butyl stearate having both functions as the external and internal lubricants.

The plasticizer penetrates between the polymer constituting the first polymer resin and other resin components to weaken the interpolymer force and improve the mobility of the polymer chain. In addition, flexibility can be imparted by lowering the glass transition temperature of the polymer. In particular, in polyvinyl chloride, the flexibility can be easily controlled only by adjusting the amount of the plasticizer added.

The plasticizer, for example, phthalic acid esters such as dioctyl phthalate and dibutyl phthalate; adipic acid/sebatic acid esters such as dioctyl adipate and dioctyl sebacate; paraffins such as paraffin oil, paraffin wax, and chlorinated paraffin; polyesters; oils such as process oils, epoxidized oils, and epoxidized vegetable oils; phosphoric acid esters; And it may be one selected from the group consisting of a combination of two or more thereof, and preferably, may be oils that can also serve as a heat stabilizer, but is not limited thereto.

The blowing agent is, for example, at least one selected from the group consisting of azodicarbonamide, dinitrosopentamethyltetraamine, azobisisobutylnitrile and p-toluenesulfonylhydrazide, a liquid low-boiling hydrocarbon in a thermoplastic polymer shell It may be one selected from the group consisting of thermally expansible microcapsules injected into (shell) and a combination of two or more thereof, and preferably, a combination of azodicarbonamide and thermally expansible microcapsules, but is not limited thereto .

In the case of the thermally expansible microcapsule, when heated, the polymer shell is softened and the liquid hydrocarbon injected therein is converted into a gas and can be expanded to 50 to 100 times its initial volume. The thermally expansible microcapsule can reduce the weight of the core part 100 and the main body including the same by forming closed cells by lowering the moisture content and specific gravity.

The pigment may be carbon black, iron oxide (Fe ₂ O ₃ ), or a combination thereof, and preferably, various colors in the core part 100 by mixing carbon black and iron oxide in a predetermined ratio. can be given

The composition of the core part 100 is, for example, 20 to 70% by weight of the first polymer resin, 30 to 70% by weight of the fibrous powder, 1 to 10% by weight of the impact modifier, 1 to 10% by weight of the filler , 1 to 5% by weight of the processing aid, 0.1 to 5% by weight of the lubricant (which also serves as a heat stabilizer), the plasticizer (which also serves as a heat stabilizer), 0.1 to 5% by weight of the foaming agent, and 0.1 to the pigment It may be 5% by weight, but is not limited thereto.

The skin part 200 may include a second polymer resin 221 and photocatalyst particles 222 . The second polymer resin 221 may be a thermoplastic resin. The thermoplastic resin is, for example, one selected from the group consisting of polyethylene, polypropylene, polybutylene, polymethylpentene, ethylene vinyl acetate, ethylene butyl acrylate, ethylene ethyl acrylate, and combinations or copolymers of two or more thereof. of polyolefin, acrylonitrile-butadiene-styrene copolymer (ABS), polyvinyl chloride (PVC), or a combination thereof, preferably, polyvinyl chloride, but is limited thereto not.

The photocatalyst particles 222 may include titanium dioxide (TiO ₂ ), preferably, anatase-type titanium dioxide. The anatase-type titanium dioxide has relatively superior photocatalytic activity compared to rutile-type titanium dioxide, and has various whiteness and/or transparency depending on the average particle diameter, so it has excellent compatibility with pigments, so the skin part 200 A predetermined wood pattern can be implemented more elegantly on the surface of the

The surface of the skin part 200 is formed by a concave-convex structure including regular and/or irregular protrusions 210 corresponding to the wood pattern and/or wood pattern to implement a three-dimensional wood pattern and/or wood pattern. It may include a wood pattern. The wood pattern may imitate the texture, pattern and/or pattern observed on the surface and/or cross-section of actual natural wood.

The concave-convex structure may include a predetermined groove 211 formed to correspond to the protrusion 210 . The wood pattern may be implemented by a three-dimensional effect and texture due to the concave-convex structure, and a wood pattern due to a minute color difference between the protrusion 210 and the groove 211 . This color difference may be adjusted according to the content of titanium dioxide included in the protrusions 210 and the grooves 211 . Specifically, since the titanium dioxide is essentially white, as the difference in the content of the titanium dioxide between the protrusions 210 and the grooves 211 increases, the color difference appears clearly. However, if the color difference is weak or excessive, the sharpness of the wood pattern may deteriorate or it may become unnatural, so it is necessary to appropriately adjust it.

Meanwhile, in the skin part 200 , the photocatalyst particles 222 may be dispersed in a discontinuous phase in a continuous phase matrix made of the second polymer resin 221 . When the skin part 200 is extrusion-molded in a state in which the photocatalyst particles 222 are not uniformly dispersed, for example, in a state that is settling on the bottom of the skin part 200, the precipitated photocatalyst particles 222 ) cannot be easily exposed to ambient light, that is, since ambient light cannot penetrate up to the precipitated photocatalyst particles 222, the precipitated photocatalytic particles 222 are difficult to have a required level of catalytic activity.

Therefore, it is necessary to increase the exposure area and frequency by moving and concentrating the photocatalyst particles 222 to the upper part of the skin part 200 . By moving and concentrating at least a portion of the photocatalyst particles 222 to the protrusions 210 of the skin part 200, the exposure area and frequency can be increased. Specifically, the photocatalyst particles 222 positioned under the groove 211 are exposed through one surface constituting the groove 211 , whereas the photocatalyst particles 222 located at the edge of the lower portion of the protrusion 210 . The photocatalyst particles 222 may be exposed through two or more surfaces constituting the protrusion 210 . That is, by moving and concentrating the photocatalyst particles 222 to the upper part of the skin part 200 , and moving and concentrating at least some of them to the protrusion 210 , the photocatalytic activity of the main body can be significantly improved.

The content of the photocatalyst particles 222 in the protrusions 210 may be 5 to 30% by weight. If the content of the photocatalytic particles 222 in the protrusions 210 is less than 5% by weight, it is difficult to implement a required level of photocatalytic activity, and the color difference between the protrusions 210 and the grooves 211 is weak, so that the clarity of the wood pattern is reduced. If it is more than 30% by weight, the photocatalytic activity in the groove 211 may be reduced, and the color difference between the protrusion 210 and the groove 211 may be excessive, so that the wood pattern may become unnatural.

The content of the photocatalyst particles 222 in the skin part 200, specifically, the average content of the photocatalyst particles 222 in the entire area of the skin part 200 may be 0.1 to 5% by weight. . If the content of the photocatalyst particles 222 in the skin part 200 is less than 0.1% by weight, it is difficult to implement a required level of photocatalytic activity, and if it exceeds 5% by weight, the photocatalyst particles 222 are appropriately used as the protrusions 210 . Difficulty moving and concentrating

In the skin part 200, the content of the photocatalyst particles 222 in the protrusions 210 with respect to the content (wt%, A) of the photocatalyst particles 222 in the portion excluding the protrusions 210 (wt%) , the ratio (B/A) of B) may be 2-20. If the ratio (B / A) is less than 2, it is difficult to implement a required level of photocatalytic activity, and the color difference between the projections 210 and the grooves 211 is weak, so that the clarity of the wood pattern may be deteriorated, and if it exceeds 20, the The photocatalytic activity in the groove 211 may be reduced, and the color difference between the protrusion 210 and the groove 211 may be excessive, so that the wood pattern may become unnatural.

The skin part 200 may further include one additive selected from the group consisting of fillers, lubricants, stabilizers, plasticizers, pigments, and combinations of two or more thereof. The types, effects, etc. of each of the exemplified additives are the same as described above.

The composition of the skin part 200 is, for example, 70 to 95% by weight of the second polymer resin 221, 0.1 to 5% by weight of the photocatalyst particles 222, 1 to 10% by weight of the filler, and the plasticizer (It also serves as a heat stabilizer) 0.1 to 5% by weight, the lubricant (which also serves as a heat stabilizer) 0.1 to 5% by weight, and the pigment may be 0.1 to 5% by weight, but is not limited thereto.

7 shows a method of manufacturing a body according to an embodiment of the present invention, and Figure 8 shows an extruder according to an embodiment of the present invention.

7 and 8, in the manufacturing method of artificial wood according to an embodiment of the present invention, (a) discharging the first composition including the first polymer resin and the filler through the main extruder 10 to form the core part 100; (b) the skin part ( forming 200); and (c) pressing the surface of the skin part 200 with a patterning roll 400 preheated to 400 to 500 ° C. manufacturing the main body by forming the formed wood pattern, but moving at least some of the photocatalyst particles 222 included in the skin part 200 to the protrusion 210; (d) forming the seating groove on one surface of the main body and two or more fixing grooves at both ends of the seating groove; (e) seating the horizontal support part in the seating groove, inserting the fixing part into the fixing groove, and coupling the connecting member to the main body; and (f) coupling the functional member to the upper surface of the horizontal support part.

In step (a), the core part 100 may be formed by discharging the first composition including the first polymer resin and the filler through the main extruder 10 . The first composition may be put into the hopper of the main extruder 10, transferred while being heated to a predetermined temperature, and melted, and then the core part 100 may be extrusion-molded with the die 30 at the tip. The main extruder 10 may be a single-screw extruder or a twin-screw extruder, and preferably may be a twin-screw extruder capable of increasing the processability and dispersibility of the first composition, but , but is not limited thereto. The first composition may further include fibrous powder and other additives, and each component, content, effect, etc. included in the first composition is the same as described above.

In step (b), at least a portion of the surface of the core part 100, preferably, the second polymer resin 221 and the entire surface of the core part 100 through the auxiliary extruder 20 The skin part 200 may be formed by discharging the second composition including the photocatalyst particles 222 .

A cavity through which the core part 100 is extruded may be provided in the die 30 of the main extruder 10 , and the tip of the auxiliary extruder 20 may be connected to the cavity. Therefore, at the same time as extruding the core part 100 through the die 30 of the main extruder 10, the second composition is injected into the auxiliary extruder 20 to pass through the die 30 The molten second composition may be discharged to the surface of the core part 100 and extruded while laminating the skin part 200 on the surface of the core part 100 .

The auxiliary extruder 20 may be a single-screw extruder or a twin-screw extruder, and preferably may be a twin-screw extruder capable of increasing processability and dispersibility of the second composition. , but is not limited thereto. The second composition may further include a filler and other additives, and each component, content, effect, etc. included in the second composition is the same as described above.

In the step (c), the surface of the skin part 200 is pressed with a patterning roll 400 preheated to 400 to 500° C., and the surface of the skin part 200 includes the protrusions 210 on the surface of the unevenness. The wood pattern formed by the structure may be formed, but at least a portion of the photocatalyst particles 222 included in the skin part 200 may be moved to the protrusion 210 .

In general, between the steps (b) and (c), aging and cooling the core part 100 and the skin part 200 are further included, which are the steps included in the skin part 200 . Since the distribution of the photocatalytic particles 222 is not properly controlled, it is difficult for the surface of the skin 200 to secure a required level of photocatalytic activity.

In contrast, by pressing the surface of the skin part 200 with the patterning roll 400 preheated to 400 to 500° C., the uneven structure including the protrusions 210 on the surface of the skin part 200 At the same time as forming the formed wood pattern, at least a portion of the photocatalyst particles 222 included in the skin part 200 is moved to the protrusion 210 so that the photocatalyst particles 222 among the protrusions 210 are formed. The content can be adjusted in the range of 5 to 30% by weight described above.

If the preheating temperature of the patterning roll 400 is less than 400° C., it is difficult to implement the required level of photocatalytic activity in the protrusions 210, and the color difference between the protrusions 210 and the grooves 211 is weak, so that the clarity of the wood pattern is reduced. If it exceeds 500° C., the photocatalytic activity in the groove 211 may be reduced, and the color difference between the protrusion 210 and the groove 211 may be excessive, so that the wood pattern may become unnatural.

In step (d), one surface of the main body is pressed with a member having a predetermined pattern, or by cutting to a predetermined pattern and depth with a predetermined cutting member, the seating groove and two or more fixing grooves at both ends of the seating groove can form.

The depth of the seating groove may be designed to be substantially equal to the thickness of the horizontal support portion of the connecting member coupled in a subsequent step, or the sum of the thicknesses of the horizontal support portion and the functional member coupled thereto, in this case , It is possible to substantially eliminate the step difference between the horizontal support part and/or the surface of the functional member and one surface of the main body, thereby minimizing the risk of walking and falling due to the step difference.

The depth of the fixing groove may be designed so that the fixing groove penetrates from one surface of the main body to a range of 30 to 70% of the thickness of the main body. If the depth of the fixing groove is less than 30% of the thickness of the main body, the connection member coupled in a subsequent step can be easily separated from the fixing groove, and if it is more than 70%, the strength of the part in which the fixing groove is formed in the body is can be significantly weakened.

In the step (e), the horizontal support part may be seated in the seating groove, and the fixing part may be inserted into the fixing groove to couple the connecting member to the main body. The fixing part and the fixing groove of the connecting member may be coupled to each other by a fitting method according to a mutual dimensional tolerance. When the fixing part does not include the locking part, the fixing part may be coupled by pressing and inserting the fixing part in the vertical direction toward the fixing groove. Since it is larger than the width of the entrance, the fixing part can be combined by pressing and inserting it in the horizontal direction from one end surface of the main body toward the fixing groove.

In the step (f), the functional member may be coupled to the upper surface of the horizontal support part. When the connecting member includes the guide portion provided with the fastening groove, both ends of the functional member or both ends of the substrate constituting the functional member are horizontally moved from one end surface of the connecting member toward the fastening groove. It can be combined by pressing and inserting. When the connecting member does not include the guide part, the functional member is coupled to the upper surface of the horizontal support part of the connecting member by a predetermined mechanical means (bolts, fittings, hooks, etc.) and/or chemical means (adhesive, etc.) can be

Hereinafter, embodiments of the present invention will be described in detail.

Example 1

Wood flour 55% by weight, PVC resin 30% by weight, ABS resin 4% by weight, expanded vermiculite 4% by weight, methyl methacrylate-ethyl acrylate-butyl acrylate copolymer 3% by weight, calcium stearate 0.2% by weight, polyethylene wax 2% by weight, 1% by weight of plasticizer, 0.2% by weight of glyceryl monostearate, 0.2% by weight of thermally expandable microcapsules, 0.2% by weight of azodicarbonamide, and 0.2% by weight of carbon black are added to a mixer, and the temperature of about 130° C. After heating and kneading in a furnace to prepare a gel raw material, it was cooled to a temperature of about 60° C. to obtain a powdery raw material.

After preparing a masterbatch by melting and kneading 40% by weight of PVC resin, 10% by weight of polyethylene resin, 25% by weight of anatase-type titanium dioxide (TiO ₂ ) and 25% by weight of iron oxide pigment, 10 parts by weight of the masterbatch and PVC resin A pellet-like raw material was obtained by melting, kneading, and extruding 90 parts by weight of a matrix containing 90% by weight, 8% by weight of expanded vermiculite, and 2% by weight of oil.

The powdery raw material was put into a twin-screw extruder, and the core part was extruded by discharging it through a die. It was molded to obtain a semi-finished product.

After aging and cooling the semi-finished product by transferring the semi-finished product to a vacuum calibrator connected to the rear end of the main extruder, the surface of the skin part is pressed with a pair of patterning rolls preheated to 400° C. got

Example 2

An artificial wood body was obtained in the same manner as in Example 1, except that the surface of the skin part was pressed with a pair of patterning rolls preheated to 430°C.

Example 3

An artificial wood body was obtained in the same manner as in Example 1, except that the surface of the skin part was pressed with a pair of patterning rolls preheated to 450°C.

Example 4

An artificial wood body was obtained in the same manner as in Example 1, except that the surface of the skin part was pressed with a pair of patterning rolls preheated to 480°C.

Example 5

An artificial wood body was obtained in the same manner as in Example 1, except that the surface of the skin part was pressed with a pair of patterning rolls preheated to 500°C.

Example 6

40% by weight of PVC resin, 5% by weight of polyethylene resin, 30% by weight of anatase-type titanium dioxide (TiO ₂ ) and 25% by weight of iron oxide pigment were melted and kneaded to prepare a masterbatch, the same method as in Example 3 to obtain an artificial wood body.

Example 7

40% by weight of PVC resin, 5% by weight of polyethylene resin, 40% by weight of anatase-type titanium dioxide (TiO ₂ ) and 15% by weight of iron oxide pigment were melted and kneaded to prepare a masterbatch, the same method as in Example 3 to obtain an artificial wood body.

Example 8

An artificial wood body was obtained in the same manner as in Example 3, except that a master batch was prepared by melting and kneading 40 wt% of PVC resin, 50 wt% of anatase-type titanium dioxide (TiO ₂ ) and 10 wt% of iron oxide pigment. .

Comparative Example 1

An artificial wood body was obtained in the same manner as in Example 1, except that the surface of the skin part was pressed with a pair of patterning rolls preheated to 390°C.

Comparative Example 2

An artificial wood body was obtained in the same manner as in Example 1, except that the surface of the skin part was pressed with a pair of patterning rolls preheated to 510°C.

Comparative Example 3

An artificial wood body was obtained in the same manner as in Example 1, except that a master batch was prepared by melting and kneading 35 wt% of PVC resin, 60 wt% of anatase-type titanium dioxide (TiO ₂ ), and 5 wt% of iron oxide pigment. .

Experimental Example 1: Composition of wood pattern

The composition of the wood pattern for the artificial wood body specimens obtained in Examples and Comparative Examples was evaluated as follows. The content of titanium dioxide in the powdery composition obtained by grinding the protrusions constituting the wood pattern formed on the surface of the skin part of the artificial wood body and the parts excluding the protrusions, respectively, was quantitatively analyzed, and the results are shown in Table 1 below.

division Titanium dioxide content
(Protrusion, wt%, B) Titanium dioxide content
(excluding protrusions, wt%, A) B/A Example 1 5.1 2.2 2.3 Example 2 12.7 2.0 6.5 Example 3 15.1 1.4 10.5 Example 4 17.9 1.3 14.1 Example 5 20.4 1.1 19.2 Example 6 24.1 1.5 16.3 Example 7 28.3 1.5 18.6 Example 8 29.8 1.5 19.5 Comparative Example 1 4.4 2.4 1.8 Comparative Example 2 35.7 0.9 38.1 Comparative Example 3 38.1 0.8 45.6

Experimental Example 2: Appearance physical properties

The external physical properties of the artificial wood body specimens obtained in Examples and Comparative Examples were evaluated as follows. The clarity of the wood pattern was evaluated by visually observing the color difference between the projections constituting the wood pattern formed on the surface of the skin part of the artificial wood body and the portion excluding the projections, and the results are shown in Table 2 below ( ◎: Excellent, ○: Good, X: Poor).

division Appearance physical properties Example 1 ○ Example 2 ○ Example 3 ○ Example 4 ◎ Example 5 ◎ Example 6 ◎ Example 7 ◎ Example 8 ◎ Comparative Example 1 X Comparative Example 2 X Comparative Example 3 X

Experimental Example 3: Photocatalytic activity

The photocatalytic activity of the artificial wood body specimens obtained in Examples and Comparative Examples was evaluated as follows. After dropwise addition of 5 ml of methylene blue solution to each of the protrusions constituting the wood pattern formed on the surface of the skin of the artificial wood body and the parts excluding the protrusions, the methylene blue solution was exposed to sunlight for 5 hours to observe the color change of the methylene blue solution, methylene When the blue solution was completely colorless (◎), when the degree of color change was slight (○), and when there was no color change (X), the results are shown in Table 3 below.

division protrusion part without protrusion Example 1 ◎ ◎ Example 2 ◎ ◎ Example 3 ◎ ◎ Example 4 ◎ ◎ Example 5 ◎ ○ Example 6 ◎ ◎ Example 7 ◎ ◎ Example 8 ◎ ○ Comparative Example 1 X ○ Comparative Example 2 ◎ X Comparative Example 3 ◎ X

The description of the present invention described above is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a dispersed form, and likewise components described as distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention.

110: seating groove 120: fixing groove
130: locking groove 310: connecting member
311: horizontal support 312: fixed part
313: engaging portion 314: guide portion
315: fastening groove 320: functional member
321: substrate 322: non-slip part
100: core part 200: skin part
210: projection 211: groove
221: second polymer resin 222: photocatalyst particles
400: patterning roll 10: main extruder
20: auxiliary extruder 30: die

Claims (10)

a body including a seating groove on one surface and two or more fixing grooves formed at both ends of the seating groove;
a connecting member including a horizontal support part accommodated in the seating groove and two or more fixing parts extending downward from both ends of the horizontal support part and accommodated in the fixing groove; and
A functional member coupled to the connecting member and exposed to one surface of the main body; includes,
The ratio (w/D) of the width (w) to the depth (D) of the fixing groove is 0.05 to 0.5,
The body includes a core portion and a skin portion provided on at least a portion of a surface of the core portion,
The core part comprises a first polymer resin and a filler,
The skin part comprises a second polymer resin and photocatalyst particles,
The surface of the skin part includes a wood pattern formed by a concave-convex structure including protrusions,
The content of the photocatalyst particles in the projection is 5 to 30% by weight, artificial wood. According to claim 1,
The fixing part includes at least one protrusion, and the height of the protrusion is less than or equal to the width of the fixing groove, artificial wood. According to claim 1,
The main body further includes a locking groove extending from the end of the fixing groove, the width of the locking groove is greater than the width of the fixing groove,
The connecting member further includes a locking part extending from the end of the fixing part to be accommodated in the locking groove, the width of the locking part being greater than the width of the fixing part, artificial wood. According to claim 1,
The connecting member further includes a guide portion extending upward from both ends of the horizontal support portion and including a fastening groove formed in a horizontal direction, artificial wood. 5. The method of claim 4,
The functional member includes at least one of a substrate and a non-slip part and a light emitting part formed on the upper surface of the substrate,
Both ends of the substrate are accommodated in the fastening groove,
The lower surface of the substrate is supported by the upper surface of the horizontal support portion, artificial wood. 6. The method of claim 5,
The non-slip part is made of an aggregate of ceramic particles fused to each other, artificial wood. 6. The method of claim 5,
The light-emitting part is made of a molded body comprising a light-transmitting resin and a light-sensitive pigment dispersed in the light-transmitting resin, artificial wood. According to claim 1,
The content of the photocatalyst particles in the skin part is 0.1 to 5% by weight,
In the skin part,
The ratio (B / A) of the content (weight %, B) of the photocatalyst particles in the protrusions to the content (weight %, A) of the photocatalyst particles in the portion excluding the protrusions is 2 to 20, artificial wood. 9. The method of claim 8,
The core part further comprises a fibrous powder,
The content of the fibrous powder in the core part is 30 to 70% by weight, artificial wood. In the manufacturing method of the artificial wood according to claim 1,
(a) discharging a first composition including the first polymer resin and the filler through a main extruder to form the core part;
(b) discharging a second composition including the second polymer resin and the photocatalyst particles to at least a portion of the surface of the core part through an auxiliary extruder to form the skin part;
(c) pressing the surface of the skin part with a patterning roll preheated to 400 to 500° C. to form the wood pattern formed by the concave-convex structure including the protrusions on the surface of the skin part, wherein the photocatalyst included in the skin part manufacturing the body by moving at least some of the particles to the protrusion;
(d) forming the seating groove on one surface of the main body and two or more fixing grooves at both ends of the seating groove;
(e) seating the horizontal support part in the seating groove, inserting the fixing part into the fixing groove, and coupling the connecting member to the main body; and
(f) coupling the functional member to the upper surface of the horizontal support part; Containing, a manufacturing method of artificial wood.

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