KR101590838B1 - Method and material for coating a coating material on a color board, and the color board fabricated by the method - Google Patents

Abstract

The purpose of the present invention is to provide a post-treatment paint which has improved water resistance on a medium density fiberboard (MDF) color board and in which penetration time is fast, thereby being stainless. The present invention further provides a painting method. According to an embodiment of the present invention, a paint, which is used in the post-treatment method for the color board with improved penetrability and water resistance, is produced by comprising the following steps: mixing 42-56 wt% of an emulsion and 0.5-2 wt% of an anti-foamer; additionally mixing the same with 42.5-57.5 wt% of urethane so as to form a base; and mixing 96.75-98.25 wt% of the base with 1.75-3.25 wt% of a penetrant.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color board post-treatment method having improved permeability and water resistance, a paint used therefor, and a color board manufactured by the above method. BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to a post-treatment method of a color board, and more particularly to a color board post-treatment method having improved permeability and water resistance by forming a plate material such as MDF in color and further enhancing permeability and water resistance thereof, A paint, and a color board manufactured by the above method.

MDF (Medium Density Fiberboard) is a medium density fiberboard (MDF) made by joining wood fiber obtained from hot wood (softening by steam after making chips) at high temperature with synthetic resin adhesive, g / cm ³ and can be produced from 3.0mm to 30mm thick.

It is possible to carry out complicated machining operations with uniform fiber distribution over the entire thickness without complicated machining operations without rupture of the side or sides. Therefore, MDF is used for table top plate, door, drawer front etc. do. It is also well suited for smoothing, firm, and overlaying or painting decorative films or veneers. Due to its excellent stability, machinability and high strength, it can be used in place of ordinary wood for drawer sides, cabinet rails, mirror frames, and modeling.

On the other hand, in the case of the MDF color board in which the color is formed in the above MDF, the manufacturing process of the MDF color board is similar to the general MDF plate production process. For example, as disclosed in European Patent Publication No. 0 903 208, The natural dyes extracted from grains are added to the dyeing process to form hues. The dyed chips are laminated and pressed together with an adhesive. The MDF color board made in this way is able to realize the strong performance against discoloration, flame retardation, moisture and waterproofing by the exposure of direct sunlight which is a disadvantage of MDF, and it is possible to realize smooth and beautiful color of the primary color pastel tone without additional painting, It is various, and it keeps uniform color from the surface to the inner part, so it can be processed even if it is cut in any place, so it is easy to process, and uniform color is obtained without separate edge processing And its use is expanding by combining color-specific boards according to design.

In other words, MDF color boards have unique colors and textures, so they are molded, doors, wall panels, children's props and interiors, small furniture. It is widely used for interior and furniture applications. In addition, the density of the MDF color board is about 20 to 30%, which is about 750 g / cm 3 to 820 g / cm 3, compared with the density of general MDF of 650 g / cm 3 to 750 g / cm 3.

However, in the case of the general untreated color board (first prior art) described above, the dye itself is weak in water resistance and is vulnerable to moisture. When the water drops are splashed or fall on the board surface, the color changes, There is a problem that remains.

On the other hand, a general MDF board is thickly coated several times by using a UV paint as a poly-film coating or an ultraviolet ray-curing coating, either white or colored, in order to observe apparent defects.

The color board of the first prior art is also used for post-processing such as painting on an MDF color board, for the purpose of preventing flame retardation, scratch prevention, contamination prevention, moisture penetration prevention, etc., To add the performance of the product (second prior art).

However, existing UV coating, poly-film coating or urethane coating method is not environment-friendly and is not free from harmful substances such as T-VOC. When it is coated on MDF color board surface, the coating is placed on the board and hardened. And the coating is cured in the state of being immersed in the surface of the color board so that it is bundled and the pastel texture of the fine and soft particles is changed into an artificial texture like a plastic surface to significantly reduce the value of the product. In addition, the cured coating film is hard and it has a disadvantage in that it can not express clear texture because it is cracked or crushed when various indentations are formed after painting.

In other words, the second prior art surface-treated color board can be used in a conventional UV coating, poly-film coating or urethane coating, as shown in Figs. 1A, 2A, 3A and 4A The second prior art color board, as in Figs. 2 (b), 3 (b) and 4 (b), compared to the color board of the first prior art, Some problems can be solved, but the texture and color are completely different.

On the other hand, as a third conventional technique, Korean Patent Registration No. 1424800 (a method of manufacturing a MDF color board forming a pattern) is disclosed.

Generally, in order to form patterns such as grain patterns on an MDF board, a pattern formed by forming a pattern on a top surface of a MDF board made of a grain pattern is attached, and then the top side of the laminated wood is coated with a coating material and then heat- However, when the MDF color board is attached with a pattern formed on the upper surface thereof, the color of the surface of the board is obscured and the sides of the board and the surface of the pattern become different colors, There is a problem that the marketability of the board is deteriorated.

In order to solve the above problems, the third prior art is to form a pattern directly on the color board. As shown in FIG. 1B, the board 10 is formed of a convex pattern layer The UV coating layer 20 formed on the board 10 is partially peeled off or scratched by the convexly embossed layer 110 of the rolling roller 100 , Scratches) to form patterns on the board in the shape of the pattern layer 110 formed on the rolling roller 100.

1C, a convex pattern layer 110 is formed on the surface of the rolling roller 100. When such a rolling roller 100 rolls the surface of the board 10, the rolling roller 100 The scratch marks of the UV coating layer 20 remain on the board 10 after the pattern layer 110 of the UV coating layer 20 is partially peeled off or scratched (scratch phenomenon) So that it appears to have formed the pattern 30.

Further, when the UV coating layer formed in the conventional MDF processing method is partially peeled off or defective, it is regarded as a defective product and is disposed of. In the third prior art, the scratch portion of the UV coating layer is reversed Which is used to form the pattern 30 of the MDF color board of the present invention.

However, even in the case of the third prior art, the UV coating layer is assumed as the premise, so that the problem of the second prior art has occurred. On the other hand, in some cases, the UV coating layer is pressed to form the pattern, In such a case, there is a further problem that the portion pressed by the roller is bundled (see photograph of FIG. 6 (a)).

Furthermore, the present inventor filed a patent application (hereinafter referred to as "related invention") which is the same as the present invention and which is entitled "Color board post-treatment method having improved color development and water resistance and paint used therefor" The prior art disclosed before the filing date of the present application), in the related invention, the paint is allowed to penetrate inward from the surface of the color board, or when the paint is slowly permeated and the penetration is slow, There was a problem that the surface was stained due to difference in drying.

Therefore, unlike general MDF paints, new paint and coating methods are required to express the texture and color of pastel tones that do not stain the surface because the paint penetrates into the MDF color board quickly while being environmentally friendly and water resistant.

European Patent Application Publication No. 0 903 208 (titled " Composition and method of manufacturing composite materials based on wood fibers, " Korean Registered Patent No. 1424800 (Name: Manufacturing method of MDF color board forming pattern)

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made in view of the above problems, and an object thereof is to provide a post-treatment paint and a coating method which have an improved water resistance and a high penetration time.

In addition, it is an object of the present invention to provide a post-treatment coating material and a coating method which are environmentally friendly and excellent in workability after coating.

In order to achieve the above object, the present invention provides a paint for use in a color board post-treatment method having improved penetration resistance and water resistance, which is used in a color board post-treatment method having improved penetration resistance and water resistance, (Base) is prepared by mixing an emulsion (hereinafter referred to as an emulsion) and an antifoamer and an urethane to prepare a base, and a base of 96.75 to 98.25 weight By weight and 1.75 to 3.25% by weight of a penetrating agent.

Preferably, 97.25 to 98.25% by weight and 1.75 to 2.75% by weight of the base and the penetrating agent are mixed, respectively.

More preferably, it is characterized in that 97.25 to 97.75% by weight and 2.25 to 2.75% by weight of the base and the penetrating agent are mixed, respectively.

Also, preferably, the penetrating agent is an alkyl ether modified poly dimethyl siloxane (Alkyl ether modified polydimethyl siloxane).

Preferably, the base is a mixture of 42 to 56% by weight of an emulsion and 0.5 to 2% by weight of an anti-foaming agent and 42.5 to 57.5% by weight of urethane do.

More preferably, 45 to 55% by weight of the emulsion is mixed with 0.9 to 1.1% by weight of an anti-foaming agent, and 44 to 54% by weight of urethane is further mixed therewith.

Most preferably, the emulsion is a water-based acrylic emulsion, wherein the urethane is a water-bone acrylic polyol and a water-soluble isocyanate in a weight ratio of 4: 1 By weight of urethane.

According to another aspect of the present invention, there is provided a method of post-processing a color board having improved permeability and water resistance, comprising the steps of: (a) diluting the paint with water (S2), (b) (S4) coating the paint on the color board surface, and (c) drying the color board surface (S6).

Preferably, in the step (a), the degree of mixing of the paint and water is about 1: 0.7 to 1.4 weight ratio.

According to another aspect of the present invention, there is provided a color board having improved permeability and water resistance.

Preferably, a clear grain pattern is formed on the surface of the color board by a rolling roller.

According to the method of post-processing a color board having improved penetration and water resistance according to the present invention, it is possible to provide a color board which has an improved water resistance and is quick in penetration time and is not stained.

Further, according to a further feature of the present invention, it is possible to provide a color board that is environmentally friendly and excellent in workability after painting.

Other objects and advantages of the present invention will become apparent from the detailed description of the embodiments with reference to the attached drawings.

FIG. 1A is a photograph showing a problem of a conventional color board. FIG.
1B is a schematic view of a process of forming a pattern on a surface of a color board of a third prior art.
Fig. 1C is a cross-sectional view of the color board of the roller of the third prior art, in which the patterned cross section and the pattern are formed. Fig.
2 is a photograph of a product showing the contrast of a conventional color board and a color board of the related invention.
Figure 3 is a photograph of another product showing the contrast of a color board of a conventional color board and the related invention.
Fig. 4 is another product photograph showing the contrast of a conventional color board and a color board of the related invention. Fig.
5 is a flow chart of a method of manufacturing a color board of the present invention and related invention.
6 is a photograph of a real product in contrast to a state in which a pattern is formed on a conventional color board and a color board of the present invention.
FIG. 7 is a graph showing the results of the color board according to the embodiment of the present invention and comparative examples. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIGS. 2 to 7. FIG.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, as claimed, and it is to be understood that the invention is not limited to the disclosed embodiments.

For reference, as described above, the present invention relates to a color board post-treatment method having improved color development and water resistance, and a paint used therefor "(hereinafter referred to as" related invention "), Quot; is incorporated herein by reference in its entirety.

FIGS. 2 to 4 are photographs showing products of a conventional color board and a color board of a related invention. FIG. 2 (a), FIG. 3 (a) and FIG. 4 2 (c), 3 (c) and 4 (c) show the related arts of the related arts. Fig. 2 (b) Fig. 5 is a flow chart of a method of manufacturing a color board of the present invention and related invention. Fig.

First, the contents of the related invention corresponding to the same applicant of the present invention will be described with reference to Figs. 2 to 5. Fig. The paints used in the color board post-treatment method having improved coloring and water resistance of the related invention include 42 to 56% by weight (preferably 45 to 55% by weight) of an emulsion and 0.5 to 2% by weight of an anti- (Preferably 0.9 to 1.1% by weight) is mixed with 42.5 to 57.5% by weight (preferably 44 to 56% by weight) of urethane.

The emulsion may be a water-based acrylic emulsion, but may be a PUD (Polyurethane Dispersion) or a silicone emulsion. However, in case of the PUD, the color becomes excessively dark, The water resistance is somewhat weak. In the case of other emulsions, it is too expensive and not suitable for boards.

The polyurethane is preferably a urethane obtained by mixing a polyol and an isocyanate in a ratio of 4: 1, and most preferably, the polyol is a water-based acrylic polyol, and the isocyanate Water-soluble isocyanate It is preferable to be urethane-based urethane.

More specifically, the bases are mixed as shown in Table 1.

Further, the amount of the defoaming agent may be a general amount of the filler which does not cause foaming during packaging, and does not affect the physical properties so much, so there is no great problem.

On the other hand, when the amount of the urethane is relatively small relative to the amount of the emulsion, the water resistance is deteriorated and the problem of sticking to the paper surfaces due to the drying failure due to the drying failure occurs, and the amount of the urethane is relatively larger than the amount of the emulsion There is a problem that the paint film breaks due to overdrying and the color of the board itself becomes dark.

As shown in FIG. 5, the color board post-treatment method having improved color development and water resistance, which is another aspect of the related invention, comprises the steps of (S2) diluting an appropriate amount of paint mixed in step (S1) (Preferably about 250 to 300 g / m 2) (S4) and then dried (S6). The drying process is first set at room temperature for 2 to 3 minutes, then 70 Dried at ~ 80 ° C for 4 to 6 minutes, and dried again at room temperature for 1 to 2 days.

The mixing ratio of the base and water is about 1: 0.7 to 1.4 (preferably 1: 1). If the water content is less than 0.7, a non-permeable coating film is formed due to excessive coating film, which may result in delayed drying and gloss unevenness. On the other hand, when diluting excess water of 1.4 or more, the crosslinking density of the coating film is low and the water resistance is deteriorated.

Subsequently, more specific examples of the paint used in the color board post-treatment method having the improved coloring property and water resistance will be described with reference to <Table 1>.

Related invention Example  And Comparative Example

First, as a related art, the best embodiment of the paint used in the color board post-treatment method having improved color development and water resistance includes 49% by weight of a water-based acrylic emulsion and 1% by weight of an anti-foaming agent A part was prepared, and 40 parts by weight of a water-based acrylic polyol and 10 parts by weight of a water-soluble isocyanate were mixed to form part B, and part A and part B were mixed in a ratio of 50:50 .

Thereafter, the base material and water as the base material were diluted 1: 1 and the color board surface was coated with 250 g / m &lt; 2 &gt;, sprayed for 2 minutes at room temperature, heated and dried at 70 DEG C for 4 minutes, .

Then, packaged and shipped surface treated MDF.

The contents of water-bone acrylic emulsion, anti-foaming agent, water-bone acrylate polyol and water-soluble isocyanate are shown in Table 1 The coating materials having different properties can be formed by mixing differently as in Example 2 and Example 3,

Even a coating material may be formed by mixing as in Comparative Examples 1 to 4 of Table 1.

Related invention Experimental Example

Table 1 below shows the results of various experimental examples according to the examples of the related invention and comparative examples.

In other words, the change of physical properties according to the ratio of the raw material components was tested, and the specimen production, water resistance and color development were confirmed by the following methods.

Preparation of specimen: Part A / Part B Examples: Dilute to 1: 1 with water, spray paint (250g / ㎡), set at room temperature for 2 minutes, heat dry at 70 ℃ for 4 minutes, dry naturally at room temperature for 24 hours Psalter.

Water resistance: Water droplets are generated in 5 minutes after dropping water on the specimen. (Judgment criteria: no surface swelling and color change for more than 30 minutes)

Color difference value before and after painting: The color difference value before and after painting is measured by dE value using color difference meter. (Judgment standard: within the color difference value dE 2.0)

Conclusions: In Examples 1 to 3 of the related invention, the water resistance and color difference values are all good. In Comparative Example 1 and Comparative Example 2, the water resistance is good but the color difference value is high. In the case of Comparative Example 4, the color difference value is good but the water resistance is poor, which is a problem.

Particularly, in the case of the color difference value (dE), the size of the color difference value rapidly changed at the boundary point (emulsion 42 wt%) (first critical point) of Example 2 and Comparative Example 2, In the examples, even if the% difference of the emulsion is about 10, the difference of the color difference value is within 0.5 point, but the difference of the color difference value is 0.8 point difference In addition,

In the case of water resistance, the magnitude of the water resistance changed drastically at the boundary point (emulsion 56 wt%) (Example 2) of Example 3 and Comparative Example 3 (in other Examples and Comparative Examples, Even if the difference is about 10, the difference of the water resistance is within 3 minutes, but the difference of the water resistance is about 10 minutes even though the difference of the emulsion is about 5 at the second critical point.

The Example  And Comparative Example

Hereinafter, referring to Figs. 5 to 7 and Table 2, a paint used in the post-treatment method of color board having improved penetration resistance and water resistance applied to the present invention will be described.

FIG. 5 is a flow chart of a method of manufacturing a color board according to the present invention and a related invention, and FIG. 6 is a photograph of a real product in contrast to a state in which a pattern is formed on a conventional color board and a color board of the present invention. 7 is a graph showing the results of the color board according to the present invention and the comparison examples.

First, the paint used in the post-treatment method of color board having improved permeability and water resistance applied to the present invention is prepared by mixing an emulsion, an anti-foaming agent and urethane to form a base, (Preferably 97.25 to 98.25% by weight, more preferably 97.25 to 98.75% by weight) and 1.75 to 3.25% by weight (preferably 1.75 to 2.75% by weight, more preferably 2.25 to 2.75% Weight%).

The wetting agent is an alkyl ether modified polydimethylsiloxane, which is used as a wetting agent for a water-based paint and a surface tension modifier. For example, BYK-348 by BYK in Germany or EPLYD-5315 by Ed Chem in Korea is available.

Particularly, the preparation of the base is preferably carried out in an amount of 42 to 56% by weight (preferably 45 to 55% by weight) and 0.5 to 2% by weight (preferably 0.9 to 1.1% by weight) of an emulsion and an anti- %) Is mixed with 42.5 to 57.5% by weight (preferably 44 to 56% by weight) of urethane, but it is not necessarily limited to the above range, The content corresponding to the example is not deviated from the technical field of the present invention.

The emulsion may be a water-based acrylic emulsion, but may be a PUD (Polyurethane Dispersion) or a silicone emulsion. However, in case of the PUD, the color becomes excessively dark, The water resistance is somewhat weak. In the case of other emulsions, it is too expensive and not suitable for boards.

Further, urethane in which polyol and isocyanate are mixed in a ratio of 4: 1 is more preferable as urethane.

Most preferably, the polyol is a water-based acrylic polyol, and the isocyanate is a water-soluble isocyanate.

More specifically, the base can be mixed in various ways as shown in Table 1 and Comparative Examples.

Further, the amount of the defoaming agent may be a general amount of the filler which does not cause foaming during packaging, and does not affect the physical properties so much, so there is no great problem.

However, when the amount of the urethane is excessively small relative to the amount of the emulsion, the water resistance may deteriorate and the problem of sticking to the paper surfaces may occur due to the drying failure due to the drying failure. When the amount of the urethane is excessive relative to the amount of the emulsion If it is excessive, the coating may break due to overdrying or the color of the board itself may become dark.

5, the paint in the step S1 in which the base and the penetrant are mixed is diluted with water in an appropriate amount (S2), and then, (Preferably about 250 to 300 g / m &lt; 2 &gt;) (S4) and dried (S6). The drying process is firstly set at room temperature for 2 to 3 minutes , Heating and drying at 70 to 80 ° C for 4 to 6 minutes, and then natural drying at room temperature for 1 to 2 days.

The mixing ratio of the base and water is about 1: 0.7 to 1.4 (preferably 1: 1). If the water content is less than 0.7, a non-permeable coating film is formed due to excessive coating film, which may result in delayed drying and gloss unevenness. On the other hand, when diluting excess water of 1.4 or more, the crosslinking density of the coating film is low and the water resistance is deteriorated.

Subsequently, a more specific embodiment of the paint used in the color board post-treatment method having the improved penetration resistance and water resistance will be described with reference to Table 1.

( Example 1)

First, the paint used in the post-treatment method of color board having improved permeability and water resistance applied to the present invention is prepared by mixing 49% by weight of a water-based acrylic emulsion and 1% by weight of an anti-foaming agent Part A was prepared, and 40 parts by weight of a water-based acrylic polyol and 10 parts by weight of water-soluble isocyanate were mixed to form part B, and part A and part B were mixed at a ratio of 50:50, And then mixing 97.5% by weight of the base material and 2.5% by weight of the penetration agent.

Thereafter, the paint and water are diluted to 1: 1 and coated on a color board with a spray of 250 g / m 2, set at room temperature for 2 minutes, heat-dried at 70 ° C for 4 minutes, and then dried naturally at room temperature for 24 hours.

Then, packaged colored surface boards are loaded and shipped.

( Example 2)

Other procedures and conditions are the same as in Example 1 except that the above base material and the penetrating agent are mixed at 98 wt% and 2 wt% to form a coating.

( Example  3)

The other procedures and conditions are the same as in Example 1 except that the above base material and the penetrating agent are mixed at 97 wt% and 3 wt% to form a coating.

( Comparative Example  One)

Other procedures and conditions are the same as in Example 1, except that the above base material and the penetrating agent are mixed at 99 wt% and 1 wt% to form a coating.

( Comparative Example  2)

Other procedures and conditions are the same as in Example 1 only in that the above base material and the penetrating agent are mixed at 98.5 wt% and 1.5 wt% to form a coating.

( Comparative Example  3)

Other procedures and conditions are the same as in Example 1 except that the above base material and the penetrating agent are mixed at 96.5 wt% and 3.5 wt% to form a coating.

( Comparative Example  4)

Other procedures and conditions are the same as in Example 1 except that the above base material and the penetrating agent are mixed at 96 wt% and 4 wt% to form a coating.

<Experimental Example>

Table 2 below shows the results of various experiments according to the embodiments of the present invention.

Example of change in physical properties according to the ratio of raw material components.

Preparation of specimen: A part was prepared by mixing 49% by weight of water-bone acrylic emulsion and 1% by weight of antifoamer, and 40% by weight of water-based acrylic polyol 10 parts by weight of water-soluble isocyanate was mixed to form Part B, and Part A and Part B were mixed at 50:50 to prepare a base material once. Subsequently, the base material and the penetrating agent were mixed in Examples and Comparative Examples (250g / ㎡) after spraying, diluted with water at a ratio of 1: 1, sprayed (250g / ㎡), checked for the penetration time of the applied paint, again set at room temperature for 2 minutes, heated at 70 ℃ for 4 minutes, Dry specimens.

Time of penetration: time (sec) (time: 60 seconds or less (dirt and glossy stain occurs after 60 seconds))

Water resistance: Water droplets are generated in 5 minutes after dropping water on the specimen. (Judgment criteria: no surface swelling and color change for more than 30 minutes)

(In the related invention, the color difference values before and after the coating were examined, but in the present invention, the color difference values are excluded from the effect)

Conclusions: In the case of Examples 1 to 3, both of the water resistance and the permeability are good. In the case of Comparative Example 1 and Comparative Example 2, the water resistance is good but the penetration time is long. On the other hand, The penetration time is short but the water resistance is remarkably decreased.

That is, the penetration time is shortened as the amount of the penetrating agent is increased, but the water resistance is weakened to some extent when 3 wt% is used and the water resistance is remarkably weakened when 3.5 wt% is used. Therefore, the amount of the penetrating agent is used within 3.25 wt%, preferably 2.75 wt% . In particular, as shown in FIG. 7, although the amount of the penetrating agent used was the same as the difference of 0.5 wt% in each of the examples and the comparative examples, there was a slight difference of about 1 ~ 3 between the other examples, In Example 3 (first critical point), the gap was significantly reduced by 8 minutes, and between Example 3 and Comparative Example 3 (the second critical point), a more rapid gap was generated with a difference of 13 minutes. There was a critical significance in this study,

In the case of permeability, in addition to the generation of dirt and glossiness in the case of exceeding 60 seconds, a gap of 60 minutes was produced between the comparative example 2 and the example 2 (the third critical point), and there was also a critical significance in this part something to do.

This critical point can be more clearly seen in the graph of Fig.

Moreover, in the case of Example 1 in which the amount of the penetrating agent used is 2.5% by weight, an optimum effect can be obtained when considering both the permeability and the water resistance.

On the other hand, in the case of forming the pattern directly on the color board by the pattern forming process as in the third related art, in the case of the conventional color board, as shown in Fig. 6 (a), the problem that the portion pressed by the protruding portion of the rolling roller is bundled However, in the case of the color board of the present invention, as in the case of FIG. 6 (c), even if the portion pressed by the projecting portion of the rolling roller has the same texture, the problem of bundling is solved, Because of the color, it is possible to form a wood grain pattern that gives a more natural and luxurious feeling because the wood grain pattern survives well because the paint penetrates quickly and deeply uniformly into the board without hardening near the surface.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Of course.

10; board
20; UV coating layer
30; pattern
100; Rolling Roller
110; Pattern floor
200; Auxiliary roller

Claims (11)

An emulsion resin, an anti-foaming agent, and a urethane resin are mixed to form a base as a coating material for use in a post-treatment method for a color board having improved permeability and water resistance. A base material is prepared by mixing 96.75 to 98.25% And 1.75 to 3.25% by weight of a penetrating agent are mixed together. The paint for use in the color board post-treatment method having improved permeability and water resistance. The method according to claim 1,
Wherein the base material and the penetrating agent are mixed in an amount of 97.25 to 98.25% by weight and 1.75 to 2.75% by weight, respectively, for use in a color board post-treatment method having improved penetration resistance and water resistance. 3. The method of claim 2,
Wherein the base and the penetrating agent are mixed in an amount of 97.25 to 97.75% by weight and 2.25 to 2.75% by weight, respectively, for use in a color board post-treatment method having improved penetration resistance and water resistance. 4. The method according to any one of claims 1 to 3,
Characterized in that the penetrating agent is an alkyl ether modified poly dimethyl siloxane. The paint for use in a color board post-treatment method having improved penetration resistance and water resistance. 4. The method according to any one of claims 1 to 3,
Characterized in that the base is prepared by mixing 42 to 56% by weight of an emulsion resin and 0.5 to 2% by weight of an anti-foaming agent and further mixing 42.5 to 57.5% by weight of urethane. A paint used in a color board post-treatment method having water resistance. 6. The method of claim 5,
Characterized in that 45 to 55% by weight of the emulsion resin is mixed with 0.9 to 1.1% by weight of an anti-foaming agent and 44 to 54% by weight of urethane is further mixed therewith. Paints used in color board post-treatment methods. 6. The method of claim 5,
The emulsion resin is a water-base acrylic emulsion resin, and the urethane is a urethane resin obtained by mixing a water-based acrylic polyol and a water-soluble isocyanate in a 4: 1 weight ratio By weight based on the total weight of the coating composition. (a) a step (S2) of diluting a coating material according to any one of claims 1 to 3 with water,
(b) coating the water-diluted paint on the color board surface (S4), and
(c) drying the color board surface (S6)
And a water-repellent layer formed on the surface of the color board. 9. The method of claim 8,
Wherein the mixing degree of the paint and water in the step (a) is about 1: 0.7 to 1.4 weight ratio. A color board produced by the method of claim 8. 11. The method of claim 10,
Characterized in that a clear grain pattern is formed on the surface of the color board by a rolling roller.

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