JP2009039681A - Finishing method providing differently color-toned pattern - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a substrate having protrusions and recesses with a finished coating surface the protrusions and recesses of which are color-toned differently from each other, in the state that a wall face, floor face or the like is already finished. <P>SOLUTION: The whole surface of a coating object having a surface with protrusions and recesses is coated with a base coating for constituting the color of the recesses, and then after only the protrusions on the surface with the protrusions and recesses are coated and colored with a coating characterized by the constitution A described below by using a roller characterized by the constitution B described below at a coating amount of 40-200 g/m<SP>2</SP>, the whole surface of the coating object is coated with a top coating characterized by the constitution C described below at a coating amount of 150-300 g/m<SP>2</SP>. Constitution A: the coating has a viscosity of 5,000-10,000 Pa s, and a Ti value of 3 to 6 by a Brookfield viscometer. Constitution B: the roller has a sponge layer having a thickness of 5-20 mm, and the deformation by loading is within the range of 3-4.5 mm at a load of 0.5 kg and within the range of 8-12 mm at a load of 2 kg. Constitution C: a clear coating contains 0.5-10 wt.% of a resin powder having particle sizes of 40-210 μm in a coating. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a method capable of forming finished surfaces having different color tones at the top and recesses of a concavo-convex surface with respect to a base having a concavo-convex surface having a step.

Conventionally, an invention in which the surface is applied to an uneven base surface (including both an uneven surface formed by spraying a finish coating material on a flat base or an embossed uneven base material) There were some.

For example, in the invention described in Japanese Patent Publication No. 51-11861 shown as Patent Document 1, an undercoat layer having a concavo-convex surface is provided by a coloring material, and after a convex portion top is made flat, a colored layer is provided on the flat portion, By applying a transparent paint to the entire surface, a finished surface having a different color tone is formed on the convex portion and other portions.

Japanese Patent Publication No. 51-11861 (Claims and Drawings)

Japanese Patent Application Laid-Open No. 11-235775 as Patent Document 2 separately shows that a first base dry coating film is formed on the entire surface of a substrate having an uneven shape, and a second base dry coating film is formed only on the convex portion. After the formation of the surface of the concave and convex, the fine concave and convex portions existing in the portion corresponding to the top of the concave and convex are colored with a partial concave coloring paint, or the convex portion coloring different from the concave coloring paint is applied to the top of the fine concave and convex portions. The paint is applied and the clear paint is applied.

JP 11-235775 A

It is relatively easy to set the coloring only on the convex part of the ground surface with unevenness by adjusting the clearance of the roll coater in the machine coating represented by the roll coater as well as selecting the roller. It was. However, in order to obtain such a finished surface in the state where the existing wall surface, floor surface, etc. have already been completed at the construction site, it is necessary to prepare the roller conditions, the paint conditions, and the coating conditions. It has been desired that anyone can easily form such a finished surface.

In addition, there is also a demand for a design having a finished feeling different from that of the finished surface disclosed in Patent Document 2.

In the invention of claim 1 according to this application, an undercoat paint that forms a concave color is applied to the entire surface of an object having a concavo-convex shape surface, and then a paint having the characteristics of the following configuration A is used. After coating with an application amount of 40 to 200 g / m ² using the roller B and coloring only the convex portions of the concavo-convex shape surface, 150 to 300 g / m ² of the top coat having the characteristics of the following configuration C is applied. The gist is to coat the entire surface of the object to be coated according to the coating amount.

The configurations A, B, and C are as follows.
Configuration A: Viscosity measured by a B-type viscometer is 5,000 to 10,000 Pa · s and Ti value is 3 to 6. Configuration B: A sponge layer having a thickness of 5 to 20 mm is provided, and the deformation amount due to load is 0.1. It is within a range of 3 to 4.5 mm at a weight of 5 kg and 8 to 12 mm at a weight of 2 kg. Configuration C: 0.5 to 10 weight of plastic powder having a particle size of 20 to 210 μm in the paint % Clear paint

Next, the invention of claim 2 is characterized in that, in the invention of claim 1, the concavo-convex shaped surface has a joint portion having a width to be a tiled pattern or a masonry pattern.

Similarly, the invention of claim 3 is characterized in that, in the invention of claim 1 or claim 2, the height difference of the concavo-convex shape is 1 to 10 mm.

According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, the coating material of the constitution C is a colored particle having a maximum particle size of 0.5 to 2.0 mm in addition to the plastic powder of 40 to 210 μm. It is the gist that it contains 1 to 5% by weight in the paint.

First, the present invention is to provide a finishing method for forming a multicolored pattern on the wall surface, floor surface, ceiling surface, surface of a structure, furniture, or furniture. Moreover, it can be used not only in factory production in which the coating machine can be easily adjusted, but also in a state where the base surface has already been fixed or assembled.

The concavo-convex shape surface serving as a base includes both concavo-convex formed by a thickable coating material and concavo-convex formed by embossing on the plate-like body itself, but the formation method is not limited. Irregularities formed by machining, which is another means, may be used.

The size of the irregularities is preferably 1 to 10 mm, and more preferably 2 to 5 mm. When this numerical value is less than 1 mm, when applying only the convex portion using the roller of the constitution B, a skill is required for adjusting the pressing force, and it becomes difficult to color only the convex portion. In addition, the case of exceeding 10 mm, which is the opposite case, is possible, but in order to form such asperities, the thickness of the base coating material or plate is increased, which is uneconomical.

It is desirable that a joint portion having a width to be a tiled pattern or a masonry pattern is formed on the uneven surface. The joint portion in such a pattern clearly represents the color of the recess, and the presence of a tiled pattern or a masonry pattern can be emphasized. The joint width is preferably 2 to 15 mm, preferably 4 to 8 mm, from the viewpoint of the balance between the efficiency of painting and the portion other than the joint.

The undercoat paint is a paint used for forming a concave color of an object to be coated, and can be used without limitation as long as it is a paint having no problem of adhesion to the object to be coated. Examples thereof include acrylic resin paints, acrylic-urethane resin paints, acrylic-silicon resin paints, and urethane resin paints. These paints may be either solvent-based paints or water-based paints as long as they do not cause a problem in an object to be coated.

In applying the undercoat paint, roller coating using a roller, spray coating using an air spray gun or an airless spray gun is preferably used. The coating amount at that time may be a standard coating amount of the paint used, and is usually 100 to 300 g / m ² .

After the dry coating film is formed by this undercoat paint, the paint for coloring the convex portions is applied. The paint used at this time may be the same type of paint as the previously used undercoat, and when a different kind of paint is used, it can be used after confirming that there is no problem in adhesion. However, it is necessary that the convex coloring paint and the undercoat paint have a different color relationship, and in addition, it is preferable that the person can recognize the color difference when viewing the object to be coated from a position several meters away.

Although the convex coloring paint is related to the roller described below, the viscosity of the paint measured with a B-type viscometer is 5,000 to 10,000 Pa · s, and the thixotropic index: Ti value is 3 to 6. Good to do. When the viscosity is less than 5,000 Pa · s, the amount of the composition B with respect to the roller is small, and the elongation per one paint coating is small, or the paint used for coloring the convex portion may sag. In addition, if it exceeds 10,000 Pa · s, the amount of inclusion with respect to the roller increases, and it is not good because it is likely to be applied to the joint portion which is a pattern concave portion, or a roller mark is likely to be formed on the coated surface. When the Ti value is also less than 3, the paint tends to sag, and the elongation per coating is poor, and when it exceeds 6, smoothness is difficult to obtain and roller marks are likely to occur on the painted surface. The term “elongation of paint” as used herein refers to the size of the area that can be applied after an appropriate amount of paint is contained in the roller, with large being good and small being bad.

The roller, which is a means for applying the paint for coloring the convex portions, is a cylindrical sponge roller having a sponge portion thickness of 5 to 20 mm and a deformation amount due to a load in the range of the following conditions. This roller is a hand roller having a coating width of about 10 cm (4 inches) to about 23 cm (9 inches) at the time of painting, and is painted by hand in principle. Another dimension, the diameter of the cylinder, is 5-8 cm. Of course, it can also be used for machine coating in factories, in which case the pressure of the sponge roller and the amount of biting into the object can be adjusted mechanically, resulting in a more uniform coating finish. It will be.

When the thickness of the sponge portion of this sponge roller is less than 5 mm, the amount of paint contained in the sponge is reduced, and the area to be applied by one paint inclusion is reduced. Moreover, although there is a relation with the rubber hardness, there is a case where only the convex top portion of the concavo-convex shape surface is applied. When only the convex top part is applied, if there is a depression in the flat part of the convex part, the undercoat paint color remains in that part.

If the thickness of the sponge portion exceeds 20 mm, the sponge will be greatly depressed when applied, and depending on the shape of the unevenness, the convex portion coloring paint may be applied to the concave portion of the object to be coated. In addition, the entire roller becomes large, which is inconvenient and lowers the workability of painting.

The amount of deformation caused by the load corresponding to the rubber hardness of the sponge portion of the roller was determined by the amount of deformation caused by two types of loads. In addition, since the state in which the paint is included is a standard, if the amount of deformation of the roller is greatly different between the dry state and the wet state, in the state where the paint solvent is the same, for example, moistened with water or thinner. The amount of deformation was measured.

The deformation amount is preferably within a range of 3 to 4.5 mm at a weight of 0.5 kg and 8 to 12 mm at a weight of 2 kg. Since this deformation amount is a deformation amount when a load is applied to the cylindrical roller, when the sponge, which is a roller material, has a planar shape, a value approximately half of that can be obtained.

These two pressures are used as a force applied to the convex part that occupies most of the object to be coated and an indexal force to clearly separate the boundary part of the uneven pattern when roller coating is performed manually. . In this invention, when the entire surface is painted, the deformation amount shows an intermediate value, and when a portion including a concavo-convex pattern is applied, a large numerical value is displayed so that followability to the fine concavo-convex pattern can be obtained. It has become.

Here, the measurement method is as follows. A thick cylindrical roller is placed so that the central axis of the cylinder is perpendicular to the pressing direction of the compressive force, and the intermediate position in the width direction where the paint is applied is the compressive force. It is set in a tester so as to be at the center, a compressive force is applied by a pressure surface having a diameter of 10 cm, and the pressure is increased by a compression speed of 2 mm / min. Since the paper tube which is the core inside the roller is deformed with a compressive force of about 2.5 kgf / cm ² , the load is applied from 0 to 2.1 kgf / cm ² and is a numerical value in the middle of the load. The amount of deformation when the applied pressure was 0.5 kgf / cm ² and 2.0 kgf / cm ² was read.

Is a modification amount due to the load, as the value of 0.5 Kgf / cm ² load test is less than 3.5mm, the follow-up to the minute recess when there is smaller irregularities in the convex portion pattern to be painful As a result, spots or unpainted areas are generated. 2.0 kgf / cm ² as the value of the load test is less than 8mm are small response variations, cause the pressing force at the time of roller coating resulting in rice coating to the recess pattern portion becomes larger. On the other hand, when the diameter is larger than 12 mm, it is difficult to adjust the pressing force at the time of applying the roller. In this case, it becomes difficult to obtain the uniform uneven pattern boundary, or the concave pattern portion is applied.

As a material for forming the sponge layer, various synthetic resins or synthetic rubbers are used. As the material, a synthetic resin such as polyvinyl chloride, polyethylene, polypropylene, ethylene-vinyl acetate copolymer resin, polystyrene, polyurethane, ABS, polyvinyl is used. Formal, acrylic resin, and silicon resin are synthetic rubbers, and examples thereof include acrylic rubber, nitrile rubber, acrylonitrile rubber, styrene rubber, butadiene rubber, styrene butadiene rubber, and silicon rubber.

The above-mentioned convex portion coloring paint is included in the above-described roller, and the undercoat paint is applied to an object to be coated on which a coating layer is formed. The application amount is 40 to 200 g / m ² when applied to a flat base. This coating amount is a measured value of the weight when the paint is wet. When the coating amount is less than 40 g / m ² , the hiding power is reduced, and the color of the undercoating paint may be seen through. Moreover, when it exceeds 200 g / m < ² >, it will cause a coating material to droop.

Next, the top coating that is applied to the entire surface of the object to be coated is a clear coating that contains 0.5 to 10% by weight of plastic powder. Since it is a clear paint, when the coating film is formed, the colors of the undercoat paint and the convex portion coloring paint are shown in portions other than the plastic powder.

The plastic powder to be blended is mainly composed of an acrylic resin represented by polymethyl methacrylate resin as a main component, and is colored with a pigment or a dye. In pigments and dyes, inorganic pigments are preferably used because of their durability. Examples of the inorganic pigment include titanium oxide, zinc white, iron black, carbon black, red pepper, yellow iron oxide, ocher, bitumen, ultramarine, chrome green, chromium oxide and the like.

The size of the plastic powder is such that the average size is 40 to 210 μm, and the range of the powder particles is desirably within 5 to 297 μm.

When the average particle diameter of the plastic powder is less than 5 μm, visual confirmation cannot be performed, and the design imparting effect to which the plastic powder is added is not recognized. Further, when the powder exceeds 297 μm, the assertion of the color of the plastic powder becomes stronger than the color of the coating material for coloring the convex portion, and the distinction between the convex portion and the portion other than the convex portion becomes unclear.

The plastic powder is blended in the top coating material in an amount of 0.5 to 10% by weight, preferably 1 to 4% by weight. If the blending amount is less than 0.5% by weight, it becomes difficult to see that the plastic powder is mixed, and it is not noticeable that it is added. On the other hand, when the amount exceeds 10% by weight, the plastic powder contained in the clear paint increases the occupied area in the paint film by the clear paint and hides the colors of the undercoat paint and the convex coloring paint. It becomes.

In the blending of the plastic powder, in addition to the above-mentioned average size of 40 to 210 μm, colored particles having a maximum particle size of 0.5 to 2 mm can be blended. In this case, the size of the grains may increase, and the amount range that can be blended is 1 to 5% by weight, preferably 2 to 4% by weight, in the clear paint. When in this range, it is possible to express the presence of both small and large powders.

As the colored particles, natural stones, crushed stones thereof, colored aggregates colored on silica sand or cold water sand, colored plastic crushed particles or colored plastic fine particles, glass particles, ceramic particles are appropriately selected.

When blending colored particles, it is better to use colored particles having a plurality of colors than colored particles having a single color. Depending on the color tone of the colored particles, this may cause a color assimilation phenomenon in the undercoat paint color or the convex color paint color. In the case where the colored particles are monochromatic and the color tone is similar to the color of the undercoat paint color or the paint color for convex portion coloring, it is difficult to understand the presence of the colored particles.

According to the first aspect of the present invention, there is an advantage that a finished surface in which the convex portion and the concave portion have different colors can be easily and surely formed on the ground surface having the unevenness. Further, the plastic powder of the clear paint containing plastic powder to be coated on the entire surface produces a contrast between the undercoat paint color of the concave portion and the paint color for convex portion coloring, and has an effect of generating a unique texture.

According to the second aspect of the present invention, since the surface pattern is a tiled pattern or a masonry pattern, the tile portion or the masonry portion can be clearly color-coded. There is an advantage that it is possible to obtain a finished feeling as if a thick tile or stone is pasted.

According to the third aspect of the present invention, there is an advantage that the finish coating to be color-coded can be surely performed when the height difference of the uneven surface is 1 to 10 mm. Further, when the height difference is 2 to 5 mm, it becomes easy to perform color-coding, and it is possible to economically form a finished feeling with uneven depth.

According to the invention of claim 4, the presence of the plastic powder can be visually recognized not only in the vicinity of the front surface but also in a certain degree of perspective condition in the finished feeling, each of the texture when viewed from the front and the texture when viewed from the oblique direction. There is an advantage that you can enjoy.

Below, the detail of the finishing method of this invention is demonstrated.
FIG. 2 of the drawings shows a cross-section of a plate-like body having a decorative finish that is obtained when the present invention is carried out on a plate-like body having irregularities. In the figure, reference numeral 1 is a substrate to be coated, 2 is an undercoat paint, 3 is a topcoat paint, 4 is a topcoat paint, and 5 is a plastic powder contained in the topcoat paint. FIG. 1 is a cross-sectional view of the plate-like body in a state where only the undercoat has been applied.

  In Example 1, the finishing of the present invention was applied to a masonry-type ceramic siding of about 5 cm square with a joint width of 4 to 6 mm. The concavo-convex pattern resembling masonry in ceramics siding consists of approximately 45 square tiles with a 5 mm wide threaded joint. The difference in height from the joint floor to the tile portion is 2 mm where it is small and 4 mm where it is large. That is, unevenness having a height difference of 2 mm is smoothly formed on the tile portion.

The undercoat paint was coated with 200 g / m ² of gray of water-based fine-coat silicon produced by Kikusui Chemical Co., Ltd., which is a water-based emulsion paint. An air spray gun was used for painting.

Next, a brown water-based emulsion paint according to the following formulation 1 was prepared, and only the top of the siding as a base was colored using a sponge roller. At this time, the convex portion to be colored is the entire surface of the stone unit.

The sponge roller of the implementation roller 1 used for coating was made of polyvinyl formal. The amount of change due to the load on the roller was 3.9 mm at 0.5 kgf and 11.0 mm at 2.0 kgf according to the test method described above.

Further, a coarse sand-bone roller, which is one of porous rollers, was prepared as the comparison roller 1, a thin sand-bone roller as the comparison roller 2, and a polyurethane sponge roller as the comparison roller 3. The amount of deformation for each load is as follows.

The viscosity at the time of painting of the coating material for coloring the convex portions was 5000 Pa · s, and the TI value was 3.5. The application amount by the sponge roller is defined as a coating amount when the ceramic siding board to be coated is cut out by a predetermined area and applied to the back surface thereof.

Formula 1
Synthetic resin emulsion (resin solid content 50%) 40 parts by weight white pigment (titanium oxide) 20 parts by weight extender pigment 10 parts by weight wetting agent, dispersant 2 parts by weight film-forming aid 4.5 parts by weight antifoaming agent 0.5 Part by weight Thickener 1.5 parts by weight Other additives (preservatives, mildew-proofing agents, etc.) 0.5 parts by weight coloring pigments (Ocher, Bengala, carbon black) 10 parts by weight mixed water As appropriate, synthetic resin emulsion Is a weight including water of the dispersion medium.

The paint for coloring the convex portions was applied and dried, and then a top coat paint of the following formulation 2 was applied at 100 g / m ² using a Juraku gun which is a kind of air spray gun.

Formula 2
Synthetic resin emulsion (resin solid content 50%) 60 parts by weight wetting agent, dispersing agent 0.2 parts by weight film-forming aid 7 parts by weight antifoaming agent 0.5 parts by weight Other additives (preservatives, antifungal agents, Others) 0.5 parts by weight plastic powder (black, average particle size 100 μm) 1.5 parts by weight plastic powder (white, average particle size 100 μm)

The decorative board obtained by the finishing method of Example 1 clearly had a different color tone between the convex pattern part and the joint part, and a finish with a mineral feeling was obtained by a top coat containing plastic powder.

In Comparative Example 1, finishing was performed under the same conditions as in Example 1 except that a coating material having a viscosity of 4000 Pa · s in the property value of the convex portion coloring coating material was used.

In Comparative Example 2, finishing was performed under the same conditions as in Example 1 except that a coating material having a viscosity of 12000 Pa · s in terms of the property value of the convex portion coloring coating material was used.

In Comparative Example 3, the convex portion coloring roller used in the comparative roller 1 was used to color the convex portion. Other conditions are the same as those in the first embodiment.

In Comparative Example 4, the convex portion coloring roller used in the comparative roller 2 was used to color the convex portion. Other conditions are the same as those in the first embodiment.

In Comparative Example 5, the convex portion coloring roller used in the comparative roller 3 was used to color the convex portion. Other conditions are the same as those in the first embodiment.

In the comparative example 6, it replaced with the plastic powder mix | blended with top coat and finished using colored silica sand No. 8, black and yellow in which an average particle diameter is 100 micrometers (as a particle size range is 53-210 micrometers). Other conditions are the same as those in the first embodiment.

In Example 2, in addition to the plastic powder added to the top coat of the Example, particles having an average particle diameter of 500 μm and 355 μm made of colored alumina as colored particles, 1% by weight of larger particles, and 2 of smaller particles Weight% was included. The color tone of the colored particles is a mixture of black and white in equal weight.

In Comparative Example 1, the coating material for coloring the convex portion hangs down on the joint portion, the joint color is not clear, and the convex portion is transparent.

In Comparative Example 2, the amount of paint contained in the roller was excessive, and a portion where the paint for coloring the convex portion was applied to the joint valley portion was generated.

In Comparative Example 3 and Comparative Example 4, no paint was contained in the convex portion coloring roller, and uniform coating was impossible.

In Comparative Example 5, although the coating material was included in the convex portion coloring roller, bubbles were easily involved, and the bubbles remained in the coated film, and the convex portion coloring was lacking in smoothness. In addition, the amount of paint contained in the roller increased, and the joint valleys were soiled.

In Comparative Example 6, sedimentation of colored silica sand was likely to occur, and a long stirring time was required to ensure the uniformity of the paint when performing the painting operation. In addition, in the case of insufficient stirring, spots of the top coating due to non-uniformity of the colored silica sand occurred, and the entire finished surface was spotted.

In Example 2, the same process as in Example 1 was performed until the convex portions were colored, and the top coating material according to the following formulation 3 was used. The top coat was applied using the same gun as in Example 1, and the coating amount was 100 g / m ² .

Formula 3
Synthetic resin emulsion (resin solid content 50%) 60 parts by weight wetting agent, dispersing agent 0.2 parts by weight film-forming aid 7 parts by weight antifoaming agent 0.5 parts by weight Other additives (preservatives, antifungal agents, Others] 0.5 parts by weight plastic powder (black, average particle size 100 μm) 1.5 parts by weight plastic powder (white, average particle size 100 μm) 1 part by weight alumina particles (black, average particle size 500 μm) 1 part by weight alumina particles (White, average particle size 500 μm) 1 part by weight alumina particles (black, average particle size 350 μm) 2 parts by weight alumina particles (white, average particle size 500 μm)

In the decorative board obtained by the finishing method of Example 2, compared with the decorative board by the method of Example 1, not only the color tone of the convex pattern part and the joint part is clear, but also fine irregularities are added to the finished surface. A natural mineral feel can be obtained.

Cross-sectional view of the decorative board with only the undercoat applied to the substrate Cross-sectional view of a decorative board having finished the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Board | substrate 2 Undercoat paint 3 Convex-colored paint 4 Top coat 5 Plastic powder

Claims (4)

An undercoating paint that forms a concave color is applied to the entire surface of the article having an uneven surface, and then a paint having the characteristics of the following structure A is used, and a roller having the following structure B is used to make a coating of 40 to 200 g / m ^2. After coating with a coating amount of 1 and coloring only the convex part of the concavo-convex shape surface, a top coating having the characteristics of the following constitution C is applied to the entire surface of the coating object with a coating amount of 150 to 300 g / m ^2. A finishing method with a distinctive pattern characterized by
Configuration A: Viscosity measured by B-type viscometer is 5,000 to 10,000 Pa · s, Ti value is 3 to 6
Configuration B: having a sponge layer with a thickness of 5 to 20 mm, and deformation amount by load being within a range of 3 to 4.5 mm at a load of 0.5 kg and 8 to 12 mm at a load of 2 kg Clear paint containing 0.5 to 10% by weight of plastic powder having a size of 40 to 210 μm in the paint The finishing method with a separate pattern according to claim 1, wherein the uneven surface has a joint portion having a width that becomes a tiled pattern or a masonry pattern. The finishing method with a separate pattern according to claim 1 or 2, wherein the height difference of the concavo-convex shape is 1 to 10 mm. The paint composition C comprises 1 to 5% by weight of colored particles having a maximum particle size of 0.5 to 2.0 mm in addition to plastic powder of 40 to 210 μm. Item 4. A finishing method having a separately painted pattern according to Item 3.

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