JP4771876B2 - Joint formation method - Google Patents

Description

  The present invention relates to a method for forming a joint on a decorative surface.

In recent years, with increasing interest in wall surfaces and the like with aesthetics, makeup surfaces with aesthetics such as natural stone, ceramic tiles, and bricks are widely used.
As a method for obtaining such a decorative surface, for example, after applying a joint material to a surface to be coated, after applying a finish coating material, the joint material is removed, and natural stone-like, ceramic tile-like, brick There is a method of applying a pattern such as a tone (for example, Patent Document 1).
In the method of obtaining a decorative surface including joints, the construction period is significantly shortened and the cost is greatly reduced compared to the case where natural stones, tiles, bricks, etc. are attached one by one. Appears almost the same aesthetics as tiles, bricks, etc.

Japanese Patent Laid-Open No. 10-266517

However, in general, on a makeup surface including joints, contaminants are likely to accumulate in the joints, which may impair aesthetics. In addition, the accumulated pollutant may spread on the wall surface due to rain or the like, and rain line contamination may occur.
In particular, in joints that are in the horizontal direction, such a phenomenon is likely to occur, which may adversely affect the aesthetics of the wall surface.

  As a result of intensive studies in view of the above problems, the inventor made the inclination angle of the joint base edge of the joint part in the horizontal direction an obtuse angle, and further made the contact angle of the surface with water 70 degrees or less. By making the contamination at the edge of the basement where contamination is likely to accumulate disappear from the surface, even if the contamination adheres to the basement of the joint, it is easy to wash away the contamination in the direction of the joint, The inventors have come up with a method for maintaining the aesthetics of the decorative surface and have completed the present invention.

That is, the present invention has the following characteristics.
1. When using a decorative coating material to finish a decorative surface with a joint structure,
The step of making the inclination angle of the horizontal eye basement edge an obtuse angle,
A method for forming a joint on a decorative surface, comprising: applying a top coating material having a contact angle to water of a formed coating film of 70 degrees or less to at least the basement edge of the joint.
2. When using a decorative coating material to finish a decorative surface with a joint structure,
The decorative coating material includes a step of using a coating material having a contact angle with water of 70 degrees or less as the decorative coating material, and making the inclination angle of the horizontal basement in the horizontal direction an obtuse angle. Surface joint formation method.
3. (1) A step of applying a primer to the base material,
(2) a step of attaching a removable joint forming material;
(3) A process of applying a decorative coating material,
(4) A step of removing the joint forming material in a state where the decorative coating material is uncured or cured, and processing so that the inclination angle of the horizontal joint base edge of the joint becomes an obtuse angle,
(5) A method for forming a joint on a decorative surface, comprising a step of applying a top coating material having a contact angle with water of 70 degrees or less to a formed coating film to at least the basement edge of the joint.
4). (1) A step of applying a primer to the base material,
(2) a step of attaching a removable joint forming material;
(3 ′) a step of applying a decorative coating material having a contact angle with water of the formed coating film of 70 ° or less,
(4) including a step of removing the joint forming material in a state where the decorative coating material is uncured or cured, and processing so that the inclination angle of the horizontal joint base edge of the joint becomes an obtuse angle. A method for forming a joint on a decorative surface characterized by the above.
5. (1) A step of applying a primer to the base material,
(2) A process of applying a decorative coating material,
(3) While the decorative coating material is in an uncured state, a joint is formed using a stamp type joint forming tool, and the joint is processed so that the inclination angle of the joint base edge in the horizontal direction becomes an obtuse angle. Process,
(4) A method for forming a joint on a decorative surface, comprising a step of applying a top coating material having a contact angle with water of 70 degrees or less to a formed coating film to at least the basement edge of the joint.
6). (1) A step of applying a primer to the base material,
(2 ′) a step of applying a decorative coating material having a contact angle with water of the formed coating film of 70 ° or less,
(3) While the decorative coating material is in an uncured state, a joint is formed using a stamp type joint forming tool, and the joint is processed so that the inclination angle of the joint base edge in the horizontal direction becomes an obtuse angle. A process for forming a joint on a decorative surface, comprising: a step.

  According to the joint forming method of the present invention, contamination of the joint base edge where the contaminant tends to accumulate is made invisible from the surface, and even if the contaminant adheres to the joint base edge, the contaminant is washed away in the joint direction. By making it easy to be done, the aesthetics of the makeup surface can be maintained for a long time.

  Hereinafter, the best mode for carrying out the present invention will be described in detail.

The joint forming method of the present invention is a cosmetic surface having a joint structure, and in particular makes the inclination angle of the horizontal joint base edge in the horizontal direction where pollutants easily collect, and at least with respect to the water of the joint base joint. The contact angle is 70 degrees or less (preferably 60 degrees or less, more preferably 45 degrees or less).
In the present invention, by finishing by the above-described method, contamination of the joint underground edge where the contaminant easily collects is made invisible from the surface, and even if the contaminant adheres to the joint underground edge, the contaminant is in the joint direction. By making it easy to be washed away, the aesthetics of the makeup can be maintained for a long time.

  In addition, a contact angle is the value measured (measurement temperature 23 degree | times) with the CA-A type contact angle measuring apparatus (made by Kyowa Interface Science Co., Ltd.).

Specifically, as shown in FIG. 1, the horizontal joint base edge is the lower part of the joint and the decorative coating material in the joint formed in the horizontal direction of the decorative surface (within 20 ° of inclination). It is near the boundary.
Further, the inclination angle (θ) of the horizontal basement edge in the horizontal direction is the angle of the decorative coating material section (decorative coating material slope section) of the joint basement edge as shown in FIG.

  In the present invention, it is preferable that the inclination angle (θ) of the horizontal basement edge in the horizontal direction is more than 90 ° (preferably 110 ° or more, more preferably 130 ° or more). Thus, by making the inclination angle (θ) of the horizontal basement edge in the horizontal direction an obtuse angle, it is possible to prevent the contaminants from being seen from the surface.

In the present invention, the inclination angle (θ) of the horizontal basement edge in the horizontal direction is not particularly limited as long as it is an obtuse angle. For example, the inclination angle (θ) as shown in FIGS. Are encompassed by the present invention.
Even if the inclination angle (θ) between the joint portion and the decorative coating material portion is microscopically 90 ° or less, it is included in the present invention as long as the inclination angle (θ) can be regarded as an obtuse angle macroscopically. Such a condition is a case where the thickness of the decorative coating material portion that is 90 ° or less is 0.3 mm or less (preferably 0.2 mm or less, more preferably 0.1 mm or less).
For example, in FIGS. 3C and 3D, there is a portion where the inclination angle (θ) between the joint portion and the decorative coating material portion is microscopically 90 °, but the decorative coating is 90 °. When the thickness of the material part is 0.3 mm or less, the inclination angle (θ) can be regarded as an obtuse angle macroscopically. In such a case, the thickness of the decorative coating material portion of 90 ° or less is considered to be negligible, and the inclination angle (θ) of the basement edge is as shown in FIGS. 3 (c) and 3 (d). To measure.

  On the other hand, the inclination angle (θ) of the horizontal edge of the horizontal plane is not particularly limited, and may be an acute angle, a right angle, or an obtuse angle.

An example of a cross-sectional view of the joint of the present invention is shown in FIGS. The joint sectional view of the present invention is not limited to FIG.
The shape of the joint section can be set as appropriate in combination with the shape of the joint edge portion and the bottom edge portion as shown in FIG.

Furthermore, the present invention is characterized in that at least the contact angle with respect to the water at the bottom edge of the eye is 70 degrees or less (preferably 60 degrees or less, more preferably 45 degrees or less, and further preferably 30 degrees or less). is there.
When the contact angle with respect to water is 70 degrees or less, the surface has high hydrophilicity, and contaminants that tend to accumulate on the joint can be washed away in the joint direction by rain or the like. Therefore, the cosmetic aesthetics can be maintained for a long time.

  Therefore, in the present invention, as described above, the contamination angle accumulated in the eye basement edge by making the inclination angle of the eye basement edge in the horizontal direction an obtuse angle and the contact angle of water on the makeup surface to 70 degrees or less. Is not visible from the surface, and the pollutant is washed away in the joint direction due to rain or the like, so that rain streak contamination is less likely to occur, and the cosmetic aesthetics can be maintained for a long time.

The joint formation method of the present invention is mainly applicable to horizontal joints, but can also be applied to vertical joints, diagonal joints, curved joints, and the like.
In such a joint formation method, it is preferable that the joints are continuously connected to form a structure in which contaminants can be easily washed out of the makeup surface. In particular, by combining vertical joints and diagonal joints, a structure in which contaminants are more easily washed away in the joint direction is obtained.

  Specific examples of the joint forming method of the present invention are shown below. However, the joint forming method of the present invention is not limited to the following method.

(Yes)
(1) A step of applying a primer to the base material,
(2) a step of attaching a removable joint forming material;
(3) A process of applying a decorative coating material,
(4) A step of removing the joint forming material in a state where the decorative coating material is uncured or cured, and processing so that the inclination angle of the horizontal joint base edge of the joint becomes an obtuse angle,
(5) A step of applying a top coating material having a contact angle to water of the formed coating film of 70 degrees or less to at least the basement edge of the eye,
A method for forming a joint on a decorative surface, comprising:

(Ro)
(1) A step of applying a primer to the base material,
(2) a step of attaching a removable joint forming material;
(3 ′) a step of applying a decorative coating material having a contact angle with water of the formed coating film of 70 ° or less,
(4) A step of removing the joint forming material in a state where the decorative coating material is uncured or cured, and processing so that the inclination angle of the horizontal joint base edge of the joint becomes an obtuse angle,
A method for forming a joint on a decorative surface, comprising:

(Ha)
(1) A step of applying a primer to the base material,
(2) A process of applying a decorative coating material,
(3) While the decorative coating material is in an uncured state, a joint is formed using a stamp type joint forming tool, and the joint is processed so that the inclination angle of the joint base edge in the horizontal direction becomes an obtuse angle. Process,
(4) A step of applying a top coating material having a contact angle to water of the formed coating film of 70 degrees or less to at least the basement edge of the eye,
A method for forming a joint on a decorative surface, comprising:

(To)
(1) A step of applying a primer to the base material,
(2 ′) a step of applying a decorative coating material having a contact angle with water of the formed coating film of 70 ° or less,
(3) While the decorative coating material is in an uncured state, a joint is formed using a stamp type joint forming tool, and the joint is processed so that the inclination angle of the joint base edge in the horizontal direction becomes an obtuse angle. Process,
A method for forming a joint on a decorative surface, comprising:

With the methods (i) and (b),
First, (1) a primer is applied to the substrate. (FIG. 5 (a), FIG. 6 (a), FIG. 7 (a), FIG. 8 (a))

  It does not specifically limit as a base material, What is necessary is just to use the base material normally used as a building material. Examples of the base material include concrete, mortar, siding board, extruded board, gypsum board, slate board, calcium silicate board, PC board, ALC board, perlite board, plywood, plastic board, metal board, woodwork board, glass, Various base materials such as ceramic tiles can be listed. Moreover, the surface of these base materials may have been subjected to some surface treatment (filler treatment, surfacer treatment, sealer treatment, etc.), or may already have a coating film formed thereon.

  The primer is not particularly limited, and examples thereof include those containing a binder and a colorant.

  As binders, various binders such as water-soluble resins, water-dispersible resins, solvent-soluble resins, solvent-free resins, non-water-dispersible resins, powder resins, cement, gypsum and silica, or composites of these. Can be used. The form of such a binder is not particularly limited, and may be either one liquid type or two liquid type. In the present invention, a water-soluble resin and / or a water-dispersible resin is particularly preferably used. Usable resin types include, for example, ethylene resin, vinyl acetate resin, polyester resin, alkyd resin, vinyl chloride resin, epoxy resin, acrylic resin, acrylic silicon resin, urethane resin, silicone resin, fluororesin, cellulose, polyvinyl Alcohol etc. or these composite systems etc. can be mentioned.

  As the colorant, those capable of coloring the primer to a desired hue can be used without particular limitation. Specifically, pigments, aggregates and the like can be used as the colorant.

  Examples of the pigment include titanium oxide, carbon black, ferric oxide (bengala), yellow iron oxide, ocher, ultramarine, cobalt green, and other inorganic color pigments, azo, naphthol, pyrazolone, anthraquinone, and perylene. Quinacridone, disazo, isoindolinone, benzimidazole, phthalocyanine, quinophthalone and other organic color pigments, heavy calcium carbonate, clay, kaolin, talc, precipitated barium sulfate, barium carbonate, etc. And pigments.

As the aggregate, at least one selected from natural aggregates such as natural stones, pulverized natural stones, and artificial aggregates such as colored aggregates can be used. Specifically, for example, marble, granite, serpentine, granite, fluorite, cryolite, feldspar, quartzite, quartz sand, and pulverized products thereof, ceramic pulverized product, ceramic pulverized product, glass pulverized product, glass beads, resin Examples thereof include pulverized products, resin beads, metal particles, vegetable powders, and the like, and those whose surfaces are colored and coated.
These colorants are usually mixed at a ratio of 5 to 1200 parts by weight, preferably 50 to 1000 parts by weight, with respect to 100 parts by weight of the solid content of the binder.

  In the undercoat material used in the present invention, in addition to the above-described components, components that can be used in normal coating materials can also be included. Examples of such components include fibers, thickeners, film-forming aids, leveling agents, plasticizers, antifreeze agents, pH adjusters, antiseptics, antifungal agents, antialgae agents, antibacterial agents, and dispersants. Antifoaming agents, ultraviolet absorbers, antioxidants, catalysts, crosslinking agents, and the like can be used.

The method for applying the undercoat material is not particularly limited, and methods such as spray coating, roller coating, brush coating, and iron coating can be employed. The application amount of the undercoat material may be within a range that can cover the substrate, and is usually about 0.1 to ² kg / m ² , preferably about 0.2 to 1 kg / m ² .

When the coating film formed from the primer is a joint color, the color may be set by selecting various colorants and applied to the substrate. In such a case, it is preferable to provide weather resistance, waterproofness, etc. in the primer.
In addition, when the base material itself or the joint forming material itself has a joint color, a transparent undercoat material may be applied to the base material, or the step of applying the undercoat material can be omitted.

  Next, (2) a removable joint forming material is pasted. (Fig. 5 (b), Fig. 6 (b), Fig. 7 (b), Fig. 8 (b))

When the joint forming material is pasted, it can be pasted using a pressure-sensitive adhesive, an adhesive or the like (hereinafter also referred to as “pressure-sensitive adhesive”). At this time, an adhesive layer and an adhesive layer can be provided in advance on the back surface of the joint forming material. In addition, as an adhesive etc., what has transparency normally is used. When using an adhesive or the like, the joint forming material may be pasted after the undercoat material has dried.
In the present invention, the joint forming material can also be pasted using the adhesive strength of the primer. In this case, the joint forming material may be pressed and fixed to the surface of the undercoat material before drying.

What is necessary is just to determine the position, space | interval, etc. which paste a joint formation material according to a desired joint pattern. For example, it can be affixed at equal intervals or can be affixed randomly.
The joint width is usually about 0.5 to 200 mm, and can be appropriately set within this range. The height of the joint forming material is usually about 0.5 to 10 mm.

When a material having a narrow width (about 0.5 to 1 mm in joint width) is used as the joint forming material, the joint can be made inconspicuous, and the joint of the joint is made inconspicuous at the intersection or the end portion of the joint. An effect can be obtained. In particular, by making the hues of the undercoat material and the decorative coating material, which are joint colors, similar colors (co-colors), a finished finish can be obtained.
Further, when a material having a large width (about 5 to 200 mm in joint width) is used as the joint forming material, the joint design can be emphasized, and an excellent design using the joint can be obtained. In particular, by making the hues of the undercoat material and the decorative coating material, which are joint colors, similar colors (co-colors), a unique design using joints can be achieved.

  The detachable joint forming material used in the present invention may be a part or all of the detachable joint forming material, and includes an embedded joint forming material and the like in addition to the joint rod type joint forming material.

Examples of the joint rod type joint forming material include those shown in FIGS. 9A to 9F. However, it is not limited to these.
As such a joint rod type joint forming material, a release material or the like may be provided in advance on the bottom surface and / or the top surface. In addition, some release material may be provided on the side surface so that it can be easily peeled off.
When such a joint rod type joint forming material is used, the color of the coating film or base material formed from the primer is the joint color.

As the embedded joint forming material, for example, as shown in FIGS. 10A to 10B, a joint base material having a fitting recess formed in the upper end portion, and a fitting recess of the joint base material are fitted. And the like composed of joint core material. However, it is not limited to these.
In such an embedded joint forming material, after applying the decorative coating material, the joint core material is removed to form the joint, and the joint color is the color of the joint base material.

  The material of the joint base material of the joint rod type joint forming material and the embedded joint forming material is not particularly limited. For example, phenol resin, melamine resin, polyester resin, epoxy resin, polyurethane, vinyl chloride resin, AS resin, ABS Resins, polyethylene, polypropylene, polystyrene, EVA (ethylene-vinyl acetate copolymer), plastics such as polycarbonate, rubber, and the like can be used. In addition to this, the lead core, fishing line, wire, piano wire, bamboo, and the like can also be used as the material for the core material of the embedded joint forming material.

  Although the joint width formed using such joint forming material is not particularly limited, it may be designed to be usually about 0.5 to 200 mm. The joint width is the joint width of the finally finished decorative face.

  Next, (3) a decorative coating material is applied. (FIG. 5 (c), FIG. 6 (c), FIG. 7 (c), FIG. 8 (c))

  The decorative coating material used in the present invention is not particularly limited as long as the intended decorative surface can be obtained.

  For example, decorative coating materials include architectural finishing coating materials defined in JIS A 6909 and their similar materials, stone-like coating materials, various interior and exterior finishing coating materials for plasterers, and various pattern coating materials. The compound etc. are mentioned. Among these, decorative coating materials that can form patterns such as granite, sandstone, Indian sandstone, marble (travertine), natural stone, natural stone, ceramic tile, and brick are suitable. As such a decorative coating material, a coating material containing a binder and an aggregate is usually used.

  As binders, various binders such as water-soluble resins, water-dispersible resins, solvent-soluble resins, solvent-free resins, non-water-dispersible resins, powder resins, cement, gypsum and silica, or composites of these. Can be used. The form of such a binder is not particularly limited, and may be either one liquid type or two liquid type. In the present invention, a water-soluble resin and / or a water-dispersible resin is particularly preferably used. Usable resin types include, for example, ethylene resin, vinyl acetate resin, polyester resin, alkyd resin, vinyl chloride resin, epoxy resin, acrylic resin, acrylic silicon resin, urethane resin, silicone resin, fluororesin, cellulose, polyvinyl Alcohol etc. or these composite systems etc. can be mentioned. Among these, the use of an acrylic resin, an acrylic silicon resin, a urethane resin, a silicone resin, a fluororesin, or a composite system thereof is preferable in that the weather resistance of the coating film can be improved.

As the binder, a binder having crosslinking reactivity can also be used. When a binder having crosslinking reactivity is used, the weather resistance, adhesion and the like of the coating film can be improved. The binder having cross-linking reactivity may be either a material that causes a cross-linking reaction by itself or a material that causes a cross-linking reaction by a separately mixed cross-linking agent. Such crosslinking reactivity includes, for example, carboxyl group and metal ion, carboxyl group and carbodiimide group, carboxyl group and epoxy group, carboxyl group and aziridine group, carboxyl group and oxazoline group, hydroxyl group and isocyanate group, carbonyl group and hydrazide group. It can be imparted by combining reactive functional groups such as epoxy groups and amino groups, aldo groups and semicarbazide groups, keto groups and semicarbazide groups, and reactive silyl groups.
The glass transition temperature of the binder can be appropriately set, and is usually −50 to 50 ° C., preferably −40 to 40 ° C., and more preferably −30 to 30 ° C.

As the aggregate, at least one selected from natural aggregates such as natural stones, pulverized natural stones, and artificial aggregates such as colored aggregates can be used. Specifically, for example, marble, granite, serpentine, granite, fluorite, cryolite, feldspar, limestone, quartzite, quartz sand, crushed stone, mica, siliceous shale, and pulverized products thereof, ceramic pulverized products, ceramic pulverized products Products, glass pulverized products, glass beads, glass flakes, resin pulverized products, resin beads, rubber particles, plastic pieces, metal particles, vegetable powder particles, and those whose surfaces are colored and coated. In addition, pulverized products such as shells, shells, wood, charcoal, activated carbon and the like can be used.
The particle size of the aggregate is usually 0.01 mm to 5 mm, preferably 0.05 to 2 mm.
These aggregates are usually mixed at a ratio of 30 to 1200 parts by weight, preferably 100 to 1000 parts by weight with respect to 100 parts by weight of the solid content of the binder.

  In the decorative coating material used by this invention, the component which can be normally used for a coating material other than the above-mentioned component can also be included. Examples of such components include coloring pigments, extender pigments, fibers, thickeners, film-forming aids, leveling agents, plasticizers, antifreezing agents, pH adjusting agents, antiseptics, antifungal agents, and algaeproofing agents. Antibacterial agents, dispersants, antifoaming agents, ultraviolet absorbers, antioxidants, catalysts, photocatalysts, crosslinking agents and the like can be used.

  Examples of the color pigment include titanium oxide, zinc oxide, carbon black, ferric oxide (bengala), yellow iron oxide, ocher, ultramarine, cobalt green and other inorganic color pigments, azo, naphthol, pyrazolone, Examples include organic color pigments such as anthraquinone, perylene, quinacridone, disazo, isoindolinone, benzimidazole, phthalocyanine, and quinophthalone, aluminum pigments, pearl pigments, and fluorescent pigments.

  Examples of extender pigments include heavy calcium carbonate, light calcium carbonate, kaolin, clay, porcelain clay, china clay, diatomaceous earth, hydrous finely divided silicic acid, talc, barite powder, barium sulfate, precipitated barium sulfate, barium carbonate, magnesium carbonate. , Silica powder, aluminum hydroxide, and the like, and one or more of these can be used. The particle size of the extender pigment is usually less than 50 μm, preferably 0.5 μm or more and 45 μm or less, more preferably 1 μm or more and 30 μm or less.

In the case of the method (b), a decorative coating material having a contact angle with water of the formed coating film of 70 degrees or less is used as the decorative coating material. When such a decorative coating material is used, it is not necessary to apply a top coating material having a contact angle with water of a formed coating film, which will be described later, of 70 degrees or less.
When obtaining a decorative coating material having a contact angle with water of the formed coating film of 70 ° or less, for example, a silicate compound, colloidal silica, or a hydrophilizing component such as a known photocatalytic component as described later is added to the decorative coating material. do it. Moreover, the contact angle with respect to the water of a formed coating film can also be made into 70 degrees or less by using hydrophilic resins, such as an acrylic silicone resin, as a binder.

The method for applying the decorative coating material is not particularly limited, and methods such as spray coating, roller coating, brush coating, and iron coating can be employed. When applying a decorative coating material, it is possible to form various uneven patterns such as corrugated patterns. However, the inclination angle of the concave portion of such a concave and convex pattern is made obtuse and the water of the concave portion is By making the contact angle with respect to 70 degrees or less, contamination in the concavo-convex pattern portion is also washed away by rain or the like, and the aesthetic appearance of the makeup surface can be maintained for a long time.
Although it does not specifically limit as an average film thickness of a decorative coating material, What is necessary is just to apply | coat so that it may become about 0.5-15 mm (preferably 1-12 mm).

  Next, (4) in a state where the decorative coating material is uncured or cured, the joint forming material is removed, and processing is performed so that the inclination angle of the joint base edge in the horizontal direction becomes an obtuse angle.

For example, in FIG. 5, by removing the joint forming material while the decorative coating material is uncured, the joint forming material is removed, and at the same time, the inclination angle of the horizontal joint base edge of the joint is made obtuse. be able to.
As the joint forming material, a joint forming material having a release material preliminarily provided on the upper surface and the bottom surface can be used. For example, a joint forming material (FIG. 9B) having a pre-prepared release material on the upper surface is used. When the decorative coating material is in an uncured state, the release material is peeled off, and after the decorative coating material has hardened, the joint forming material can be removed to cut off the excess decorative coating material. The edge with the coating material part can be finished cleanly.
Moreover, you may provide the coating agent from which the contact angle will be 70 degrees or less to the side surface of a joint formation material so that the contact angle with respect to the water of the joint base edge part surface may be 70 degrees or less.

In addition, when the joint formation material as shown in FIG. 6 is used, when removing the joint formation material, a method of making the obtuse angle by pressing so that the inclination angle of the joint underground edge becomes an obtuse angle, removing the joint formation material After that, the inclination angle can be made obtuse, for example, by a method of making the inclination angle of the basement edge part obtuse.
After removing the joint formation material, in the method of making the inclination angle of the joint underground edge part obtuse, after removing the joint formation material, press the decorative coating material using a roller, trowel, brush, comb, spatula, etc. Further, it is possible to make the inclination angle an obtuse angle by scraping the cured decorative coating material by some method.

In addition, when the joint forming material as shown in FIG. 7 is used, when removing the joint forming material, first, the joint adjusting plate is adjusted so that the inclination angle of the joint base edge becomes an obtuse angle, and then the joint is formed. By removing the forming material, it is possible to make the inclination angle of the joint base edge an obtuse angle.
The material of the joint adjusting plate is phenol resin, melamine resin, polyester resin, epoxy resin, polyurethane, vinyl chloride resin, AS resin, ABS resin, polyethylene, polypropylene, polystyrene, EVA (ethylene-vinyl acetate copolymer), polycarbonate. Such as plastic plates and rubber plates, inorganic plates such as aluminum, stainless steel, copper, and iron, and plywood can be used.

  Further, in the case of (i), (5) a top coating material having a water contact angle of the formed coating film of 70 degrees or less (preferably 50 degrees or less, more preferably 30 degrees or less) is applied to at least the basement edge of the eyes. Apply. In the case of (b), the top coat material can be applied as necessary.

By applying such a top coating material to at least the joint base edge, the contaminants accumulated in the joint base edge can be washed away in the joint direction.
In the present invention, the effect of the present invention can be exhibited by applying the top coating material to at least the basement edge of the eyes, but it is preferable to apply the top coating material to the entire decorative surface. By applying it on the entire face of the face, even if the pollutant flows out from the basement edge of the eye, it can be washed away by rain, etc. It can be maintained for a long time. Moreover, in such a case, the temperature rise of a building can also be suppressed.

Examples of such a top coating material include a binder, a silicate compound, a material containing colloidal silica, and / or a material containing a photocatalyst.
Examples of the silicate compound include tetramethoxysilane, tetraethoxysilane, tetra n-propoxysilane, tetraisopropoxysilane, tetra n-butoxysilane, tetraisobutoxysilane, tetra sec-butoxysilane, tetra t-butoxysilane, tetra Phenoxysilane, monoethoxytrimethoxysilane, monobutoxytrimethoxysilane, monopentoxytrimethoxysilane, monohexoxytrimethoxysilane, dimethoxydiethoxysilane, dimethoxydibutoxysilane, methyltrimethoxysilane, methyltriethoxysilane, ethyltri Methoxysilane, ethyltriethoxysilane, phenyltrimethoxysilane, dimethyldimethoxysilane, diethyldimethoxysilane, diphenyldimethoxysilane, γ Glycidoxypropyltrimethoxysilane, γ-glycidoxypropylmethyldimethoxysilane, γ-mercaptopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, N- (β-aminoethyl) -γ-aminopropyltrimethoxysilane N- (β-aminoethyl) -γ-aminopropylmethyldimethoxysilane, γ-methacryloxypropyltrimethoxysilane, γ-methacryloxypropylmethyldimethoxysilane, methyltrichlorosilane, and the like, and condensates thereof. Or these polyhydric alcohol modified products etc. are mentioned. Further, a silicate compound containing a carboxyl group, a hydroxyl group, a fluoro group, a sulfone group, an oxyalkylene group or the like can also be used. The form of such a silicate compound is not particularly limited in liquid form, sol form, gel form, or granular form. As the sol-like silicate compound (silica sol), for example, one having an average primary particle diameter of usually 1 to 200 nm, preferably 5 to 100 nm can be used.
Examples of the silica sol include tetramethoxysilane, tetraethoxysilane, tetra n-propoxysilane, tetraisopropoxysilane, tetra n-butoxysilane, tetraisobutoxysilane, tetrasec-butoxysilane, tetrat-butoxysilane, and tetraphenoxy. Silanes, etc., or their condensates can be produced as raw materials. Alkoxysilane compounds other than the above silicate compounds, alcohols, glycols, glycol ethers, fluoroalcohols, silane coupling agents, polyoxyalkylenes Group-containing compounds and the like can also be used.
Such silica sol can further prevent rain stripe contamination, and can maintain the aesthetics of the makeup surface for a long period of time.
If the silica sol forms a silica aggregate at the time of film formation, it is advantageous in terms of maintaining the hue and texture of the decorative coating material.
The silica sol is preferably mixed at a ratio of 50 to 500 parts by weight with respect to 100 parts by weight of the solid content of the binder.

  As the binder, various binders such as the above-mentioned water-soluble resin, water-dispersible resin, solvent-soluble resin, solvent-free resin, non-water-dispersible resin, powder resin, cement, gypsum and silica, or A binder or the like obtained by combining these can be used.

In the topcoat material of the present invention, in addition to the above-mentioned components, for example, pigments, dyes, thickeners, leveling agents, wetting agents, plasticizers, antiseptics, antifungal agents, antialgae agents, antibacterial agents, surfactants Further, an antifoaming agent, an ultraviolet absorber, an antioxidant, a photocatalyst, and the like can be mixed.
As a binder, it can set suitably from the above-mentioned binders, for example.
As a pigment, it can set suitably from the above-mentioned coloring pigment and extender, for example.

Such a top coating material can be applied by a known method such as spray coating, roller coating, or brush coating. The amount of application is not particularly limited, but the effect of the present invention can be sufficiently exerted as long as it is generally about 10 to 500 g / m ² (preferably 30 to 400 g / m ² ).

In the method of (ha), (ni)
First, (1) an undercoat material is applied to a substrate (for example, FIG. 11 (a)). In this step, the primer may be applied in the same manner as (i) and (b).
Next, (2) a decorative coating material is applied (for example, FIG. 11B). In the step (2), the decorative coating material may be applied in the same manner as (i) and (b).

Next, (3) the decorative coating material is in an uncured state, and a joint is formed using a stamp type joint forming tool, and (4) the inclination angle of the horizontal joint base edge of the joint is an obtuse angle. (For example, FIG. 11C and FIG. 11D).
Examples of the stamp type joint forming tool used in such a method include those shown in FIGS. 12 (a) to 12 (d) (but are not limited to these), and are applied decoration. It is pressed against the coating material to form joints.

In a method using such a stamp type joint forming tool, a step of attaching or removing a joint forming material (a joint rod type joint forming material, an embedded joint forming material) can be omitted. Moreover, the stamp type joint forming tool can be used repeatedly, and can contribute to cost reduction and waste reduction of joint forming material.
As a stamp type joint forming tool, for example, as shown in FIG. 12, a stamped part and a non-pressed part are included. When such a stamp type joint forming tool is used, the cross-sectional shape of the pressing portion usually indicates the joint cross-sectional shape.
Examples of the material of the stamp type joint forming tool include materials used for the joint forming material described above.

  For example, when a stamp type joint forming tool as shown in FIGS. 12 (a) and 12 (c) is used, the stamp type joint forming tool is pressed against and the inclination angle of the joint basement edge is made obtuse. Can do. Moreover, it can also carry out after immersing a press part beforehand in water, a solvent, etc. so that a decorative coating material may not adhere to a press part at the time of pressing. In addition, by applying the above-described coating material or the like to the pressing portion in advance and pressing it, the contact angle with respect to water on the surface can be reduced to 70 degrees or less.

In addition, when the stamp type joint forming tool as shown in FIGS. 12B and 12D is used, when the stamp type joint forming tool is separated from the decorative coating material, the inclination angle of the joint base edge is an obtuse angle. It is possible to make the inclination angle obtuse by a method of making the obtuse angle by pressing so that the inclination angle of the joint underground forming portion is made obtuse after pressing the stamp type joint forming tool.
Moreover, it can also carry out after immersing a press part beforehand in water, a solvent, etc. so that a decorative coating material may not adhere to a press part at the time of pressing. In addition, by applying the above-described coating material or the like to the pressing portion in advance and pressing it, the contact angle with respect to water on the surface can be reduced to 70 degrees or less.
After pressing the stamp type joint forming tool, the angle of inclination of the basement edge is made obtuse. After pressing the stamp type joint forming tool, decorate with a roller, trowel, brush, comb, spatula, etc. It is possible to make the inclination angle an obtuse angle by pressing the coating material or scraping the cured decorative coating material by some method.

Examples of the stamp type joint forming tool include those shown in FIG. 12, but besides this, various designs can be easily formed. For example, typical designs are shown in FIG. 13, but are not limited to these designs, and designs can be formed according to each user's request.
The design shown in FIG. 13 can also be applied to the above-described joint rod type joint forming material, embedded joint forming material, and the like.

The joint forming method of the present invention is not limited to the above-described wet construction methods (ii) to (ii), and can also be applied to other wet construction methods and dry construction methods. For example, in the dry construction method, the joint material sheet or the like is treated in advance so as to have an obtuse angle, and the building material sheet is pasted with an adhesive, an adhesive, etc. Can also be formed.
The joint formation method of the present invention can be applied to newly built properties, refurbished properties, etc., and can be employed for construction on site, construction in a factory, and the like. In the present invention, the finishing can be easily performed particularly in the field.

  Examples are given below to clarify the features of the present invention.

・ Undercoat material A: Acrylic resin emulsion-based undercoat material (solid content 50 wt%, brown)
Decorative coating material A: 200 parts by weight of acrylic resin emulsion (solid content 50% by weight, minimum film-forming temperature 20 ° C.), titanium oxide dispersion (solid content 70% by weight, particle size 0.3 μm) 40 parts by weight, heavy 140 parts by weight of calcium carbonate (particle diameter 5 to 10 μm), 300 parts by weight of cryolite (particle diameter 0.1 to 0.3 mm), 10 parts by weight of a film-forming aid, 60 parts by weight of water, 5 parts by weight of a thickener, 3 parts by weight of an antifoaming agent was uniformly mixed by a conventional method to obtain a decorative coating material A (contact angle of the formed coating film with water: 90 degrees).
Decorative coating material B: 200 parts by weight of acrylic resin emulsion (solid content 50% by weight, minimum film-forming temperature 20 ° C.), titanium oxide dispersion (solid content 70% by weight, particle diameter 0.3 μm) 40 parts by weight, heavy 140 parts by weight of calcium carbonate (particle diameter 5 to 10 μm), 300 parts by weight of cryolite (particle diameter 0.1 to 0.3 mm), 10 parts by weight of a film-forming aid, 60 parts by weight of water, 5 parts by weight of a thickener, 3 parts by weight of an antifoaming agent and 70 parts by weight of the silicate compound A shown below were uniformly mixed by a conventional method to obtain a decorative coating material B (contact angle of the formed coating film with water: 50 degrees).
Silicate compound A: tetraethoxysilane condensate ethylsilicate condensate having an average molecular weight of 750 (average molecular weight 750, silica residual ratio 40% by weight) and polyoxyethylene glycol mono having an average molecular weight of 400 A silicate compound A was obtained by mixing 81.7 parts by weight of cetyl ether (manufactured by Tokyo Chemical Industry Co., Ltd.), adding 0.02 part by weight of dibutyltin dilaurate as a catalyst, and performing a deethanol reaction at 75 ° C. for 8 hours. .
-Top coating material A: 200 parts by weight of acrylic resin emulsion (solid content 50% by weight, minimum film-forming temperature 20 ° C), 70 parts by weight of silicate compound B shown below, 15 parts by weight of film-forming aid, 5 parts by weight of thickener, 5 parts by weight of an antifoaming agent was uniformly mixed by a conventional method to obtain a top coating material A (contact angle of the formed coating film with water: 32 degrees)
Silicate compound B: A water-dispersible silica sol (pH 7.6, solid content 20% by weight, average primary particle size 27 nm, electric conductivity 0.6 mS / cm) is added to a reaction vessel equipped with a reflux condenser and a stirring blade. After charging 500 parts by weight and gradually adding 0.3 parts by weight of trifluoroethanol while stirring, 0.15 parts by weight of methoxypolyethylene glycol was gradually added dropwise. Subsequently, after heating up to 80 degreeC and continuing stirring for 24 hours, it stood to cool to room temperature and obtained the silicate compound B.
・ Coating material B: 200 parts by weight of acrylic resin emulsion (solid content 50% by weight, minimum film-forming temperature 20 ° C.), 10 parts by weight of water-soluble urethane resin (solid content 35% by weight), water-dispersible silica sol (pH 7.6, 600 parts by weight of a solid content of 20% by weight and an average primary particle size of 27 nm were mixed, and water was further added to obtain a coating material B of 2% by weight of solid content and pH 7.2 (contact angle of the formed coating film with water) : 10 degrees or less).

In addition, the contact angle with respect to the water of the coating film formed of the decorative coating material A and the decorative coating material B is set to 0.5 mm on the wet film thickness of each coating material on an aluminum plate (150 mm × 70 mm). The test specimen was coated for 24 hours at a temperature of 23 ° C. and a relative humidity of 50%, and the specimen was measured with a CA-A type contact angle measuring device (manufactured by Kyowa Interface Science Co., Ltd.). The measured temperature is 23 degrees).
Further, the contact angle of the formed coating film of the top coating material A with respect to water is determined by applying the top coating material A on an aluminum plate (150 mm × 70 mm) with an applicator so that the wet film thickness becomes 0.125 mm. What was dried for 24 hours at 23 degrees and 50% relative humidity was used as a test body, and the test body was measured with a CA-A type contact angle measuring device (manufactured by Kyowa Interface Science Co., Ltd.) (measurement temperature: 23 degrees). Value.

Example 1
On the slate plate (900 mm × 900 mm), the primer A was applied with a roller at a coating amount of 200 g / m ² and cured for 3 hours.
Next, a joint rod type joint forming material (joint width 1 cm, made of polyethylene) as shown in FIG.
Next, the decorative coating material A was applied with a trowel so that the coating thickness was 5 mm.
Next, before the decorative coating material A was dried, the joint rod type joint forming material was removed and pressed with a trowel so that the inclination angle of the joint base edge became 120 ° and cured for 24 hours.
Next, the top coating material A is applied to the basement edge of the eyes and the entire face of the face by spraying at a coating amount of 200 g / m ² and cured for 24 hours. The natural stone-like face as shown in FIG. And a test body was obtained.

(Contamination test 1)
The obtained specimen was left standing vertically in Ibaraki City, Osaka, facing south, and exposed outdoors for 3 months.
Three months later, the state of contamination on the specimen surface was visually evaluated. Evaluation is as follows. The results are shown in Table 1.
4: There was no surface contamination and excellent aesthetics were maintained.
3: There was almost no surface contamination, and excellent aesthetics were maintained.
2: Part of the surface contamination was observed.
1: Surface contamination was observed.

(Contamination test 2)
The obtained specimen was left standing vertically in Ibaraki City, Osaka, facing south, and exposed outdoors for one year.
After one year, the state of contamination on the surface of the specimen was visually evaluated. Evaluation is as follows. The results are shown in Table 1.
4: There was no surface contamination and excellent aesthetics were maintained.
3: There was almost no surface contamination, and excellent aesthetics were maintained.
2: Part of the surface contamination was observed.
1: Surface contamination was observed.

(Contamination test 3)
A carbon aqueous solution (carbon 0.1% by weight) was sprayed on the vertically fixed test body, and after 10 minutes, 1 liter of water was poured from the top of the test body so as to spread over the entire surface of the test body. Thereafter, the state of contamination on the surface of the specimen was visually evaluated. Evaluation is as follows. The results are shown in Table 1.
4: There was no surface contamination and excellent aesthetics were maintained.
3: There was almost no surface contamination, and excellent aesthetics were maintained.
2: Some surface contamination was observed.
1: Surface contamination was observed.

(Example 2)
On the slate plate (900 mm × 900 mm), the primer A was applied with a roller at a coating amount of 200 g / m ² and cured for 3 hours.
Next, a joint rod type joint forming material (joint width 1 cm, made of polyethylene) as shown in FIG.
Next, the decorative coating material B was applied with a trowel so that the coating thickness was 5 mm.
Next, before the decorative coating material B was dried, the joint rod type joint forming material was removed and allowed to cure for 24 hours to form a natural stone-like decorative surface as shown in FIG. (Inclination angle at the basement of the eyes: 120 °)
About the obtained test body, the test similar to Example 1 was done.

(Example 3)
On the slate plate (900 mm × 900 mm), the primer A was applied with a roller at a coating amount of 200 g / m ² and cured for 3 hours.
Next, the decorative coating material A was applied with a trowel so that the coating thickness was 5 mm.
Next, before the decorative coating material A was dried, a stamp type joint forming tool (joint width 1 cm, made of polyethylene) as shown in FIG. 12A was pressed in a lattice shape and cured for 24 hours. (Inclination angle at the basement of the eyes: 120 °)
Next, the top coating material A is applied to the basement edge and the entire face of the face by spraying at a coating amount of 200 g / m ² and cured for 24 hours. The natural stone-like face as shown in FIG. And a test body was obtained.
About the obtained test body, the test similar to Example 1 was done.

Example 4
On the slate plate (900 mm × 900 mm), the primer A was applied with a roller at a coating amount of 200 g / m ² and cured for 3 hours.
Next, a joint rod type joint forming material (joint width 1 cm, made of polyethylene) as shown in FIG.
Next, the decorative coating material B was applied with a trowel so that the coating thickness was 5 mm.
Next, before the decorative coating material B was dried, the joint rod type joint forming material was removed and allowed to cure for 24 hours to form a natural stone-like decorative surface as shown in FIG. (Inclination angle at the basement of the eyes: 120 °)
Next, the base coating B is applied to the basement edge and the entire face of the face by spraying at a solid content of 5 g / m ² and cured for 24 hours. A decorative surface was formed to obtain a test body.
About the obtained test body, the test similar to Example 1 was done.

(Example 5)
On the slate plate (900 mm × 900 mm), the primer A was applied with a roller at a coating amount of 200 g / m ² and cured for 3 hours.
Next, using a joint rod type joint forming material (joint width 2.5 cm, made of polyethylene) as shown in FIG. 9 (d), as shown in FIG. 15, joint width 7.5 mm, joint width 2.5 mm It was made to stick with an adhesive so that it may become. (A joint width of 7.5 mm can be obtained by joining together three joint rod type joint forming materials.)
Next, the decorative coating material B was applied with a trowel so that the coating thickness was 5 mm.
Next, before the decorative coating material B was dried, the joint rod type joint forming material was removed and cured for 24 hours to form a natural stone-like decorative surface as shown in FIG. 13 to obtain a test specimen. (Inclination angle at the basement of the eyes: 120 °)
Next, the top coating material A is applied to the basement edge and the entire face of the face by spraying at a coating amount of 200 g / m ² and cured for 24 hours, so that the natural stone-like face as shown in FIG. And a test body was obtained.
About the obtained test body, the test similar to Example 1 was done.

(Table 1)
─────────────────────────────────
│ │Example 1 │Example 2 │Example 3 │Example 4 │Example 5│
─────────────────────────────────
│Contamination test 1│ 4 │ 4 │ 4 │ 4 │ 4 │
│Contamination test 2│ 3 │ 3 │ 3 │ 4 │ 3 │
│Contamination test 3│ 4 │ 3 │ 4 │ 4 │ 4 │
─────────────────────────────────

It is a front view of the decorative surface of the present invention. It is AA 'sectional drawing (joint sectional drawing) in FIG. It is an example which shows the inclination-angle of the eye basement edge part of this invention. It is an example which shows the joint sectional view of this invention. It is an example of the joint formation method of this invention. It is an example of the joint formation method of this invention. It is an example of the joint formation method of this invention. It is an example of the joint formation method of this invention. It is an example of the joint rod type joint forming material of this invention. It is an example of the joint rod type joint forming material of this invention. It is an example of the joint formation method of this invention. It is an example of the stamp type joint forming tool of the present invention. It is an example of the joint design of this invention. 6 is a front view of a decorative surface obtained in Example 3. FIG. 10 is a front view of a decorative surface obtained in Example 5. FIG.

Claims (6)

When using a decorative coating material to finish a decorative surface with a joint structure,
The step of making the inclination angle of the horizontal eye basement edge an obtuse angle,
A step of applying a top coating material having a contact angle with water of the formed coating film of 70 degrees or less to at least the basement edge of the eye,
A method for forming a joint on a decorative surface, comprising: When using a decorative coating material to finish a decorative surface with a joint structure,
The decorative coating material includes a step of using a coating material having a contact angle with water of 70 degrees or less as the decorative coating material, and making the inclination angle of the horizontal basement in the horizontal direction an obtuse angle. Surface joint formation method. (1) A step of applying a primer to the base material,
(2) a step of attaching a removable joint forming material;
(3) A process of applying a decorative coating material,
(4) A step of removing the joint forming material in a state where the decorative coating material is uncured or cured, and processing so that the inclination angle of the horizontal joint base edge of the joint becomes an obtuse angle,
(5) A step of applying a top coating material having a contact angle to water of the formed coating film of 70 degrees or less to at least the basement edge of the eye,
A method for forming a joint on a decorative surface, comprising: (1) A step of applying a primer to the base material,
(2) a step of attaching a removable joint forming material;
(3 ′) a step of applying a decorative coating material having a contact angle with water of the formed coating film of 70 ° or less,
(4) A step of removing the joint forming material in a state where the decorative coating material is uncured or cured, and processing so that the inclination angle of the horizontal joint base edge of the joint becomes an obtuse angle,
A method for forming a joint on a decorative surface, comprising: (1) A step of applying a primer to the base material,
(2) A process of applying a decorative coating material,
(3) While the decorative coating material is in an uncured state, a joint is formed using a stamp type joint forming tool, and the joint is processed so that the inclination angle of the joint base edge in the horizontal direction becomes an obtuse angle. Process,
(4) A step of applying a top coating material having a contact angle to water of the formed coating film of 70 degrees or less to at least the basement edge of the eye,
A method for forming a joint on a decorative surface, comprising: (1) A step of applying a primer to the base material,
(2 ′) a step of applying a decorative coating material having a contact angle with water of the formed coating film of 70 ° or less,
(3) While the decorative coating material is in an uncured state, a joint is formed using a stamp type joint forming tool, and the joint is processed so that the inclination angle of the joint base edge in the horizontal direction becomes an obtuse angle. Process,
A method for forming a joint on a decorative surface, comprising:

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