JP2505698B2 - Cement-based molded product with a decorative layer that reproduces the notation of images and characters - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cement type molded product, and in particular, a photograph, a painting, a symbol mark, a character or the like is enlarged or reduced on the surface of the molded product to obtain a molded product having a decorative layer as an original image. Cement-based molding that has a decorative layer for the purpose of facilitating workability and contributing to environmental design by keeping the copied images and characters stable over a long period of time by arranging and arranging them in a state Regarding things.

[0002]

2. Description of the Related Art Conventionally, when expressing a design or a character on the surface or wall surface of a sidewalk or a road, a pavement block facility surface, an asphalt pavement surface, a color flat plate facility surface, a hollow concrete block facility surface, etc. Adhering a preprinted sheet to the surface of the facility surface made of cement-based molding with an adhesive or pressure-sensitive adhesive, writing with a paint, or molding in each color according to a prescribed procedure The method of arranging according to.

However, in the method using the above-mentioned sheet, the place of use is limited and there is a problem in durability. In the case of writing with paint, it is possible to create one surface for each original image due to its workability, but it is difficult to create many surfaces, and it is disadvantageous in terms of economy and manufacturing cost. Further, in the method of arranging the colored molded product, the number of colors used is limited, and it is necessary to limit the design or character to be expressed to a certain size. Furthermore, in the method of computer-processing a document read by a scanner on the surface of an existing structure or the surface of a vehicle body and drawing with a special spray printing machine, the surface to be drawn should be smooth or nearly smooth. It is possible to draw at any place, but it is necessary to design, manufacture and install it in accordance with the surface intended for the special spray printing machine for drawing, especially for large wall surfaces. However, the labor and cost of applying protective coating are enormous.

[0004]

SUMMARY OF THE INVENTION The present invention faithfully reproduces original images such as photographs, paintings, symbol marks, characters, and originals on a surface composed of a cement-based molded product, and its decorative surface Excellent in various chemical, physical and mechanical properties such as weather resistance, water resistance, chemical resistance, abrasion resistance, impact resistance, etc.
In particular, it effectively prevents stains peculiar to cement molded products due to efflorescence, deterioration of the decorative layer, etc., and imparts non-slipping property without disturbing the original image and the image reproduced from the original when used on the sidewalk. It is intended to provide a cement-based molded product.

That is, in the method of using a printed sheet, which is one of the conventional techniques, by selecting an adhesive or a pressure-sensitive adhesive, the surface of any substrate can be protected without impairing the original image. However, when used externally, there are problems with various durability, such as maintenance of adhesion for a long period of time, durability on the sidewalks and roadways exposed to friction and wear. There is a need to limit the location.

Further, the method of reproducing the original image using the paint is the most widely used method at present, but the reproduction of a full-color image is extremely limited because human work is mainly performed. Only a limited area can be constructed in a designated area, it is inferior in versatility and durability, and various signs displayed on the sidewalk surface are created using paint and equipment of a specific color, but the sidewalk, When designing and improving the environment, including the roadway, there are many requests for improvement and improvement, including the durability of the paint.

There is also a method of expressing a geometric pattern by combining a color flat plate and a colored interlocking block on a sidewalk, a park promenade, etc. However, due to the limited size of the structure, the small size of the above-mentioned various signs. It is difficult to cope with the case where it is required to display the area, and it is impossible to express a full-color image.

Further, the method using a special spray printing machine is excellent in reproducing various original images, but the cost and date and time required for adjusting the base, reproducing the original image, and applying the protective coating film. Has a huge number of drawbacks, and it is impossible to use it on a sidewalk surface closely related to daily life because of its versatility.

[0009]

[Means for Solving the Problems] The present inventors diligently studied the above-mentioned various problems, and
In particular, as a result of investigating a method for making a sidewalk surface a surface that creates a more comfortable urban space, cement-based moldings such as interlocking blocks, flat plates, concrete products for roads, concrete blocks, hollow concrete blocks, Concrete extruded board, PC board, G
After applying the penetrating epoxy resin coating on the surface of RC plate, etc.,
The surface is adjusted with epoxy resin putty, then white synthetic resin paint is applied, various images and characters are drawn by printing, and transparent synthetic resin paint is applied, and then transparent synthetic resin in which resin beads or glass beads are dispersed. By applying a matte transparent synthetic resin paint after applying the paint, there is no restriction on the area, faithfully reproduce various originals, cement-based molding with a decorative layer that can provide a durable wall surface and sidewalk surface It was found that the product can be obtained.

That is, in the cement-based molded article according to the present invention, the surface of the cement-based molded article substrate is coated with a penetrating epoxy resin coating, and the coated surface of the penetrating epoxy resin coating is adjusted with an epoxy resin putty. , Further apply a white synthetic resin coating on the surface, then form a desired image, characters, etc. on the white synthetic resin coated surface by printing, apply a transparent synthetic resin coating on the printed surface, and The present invention is characterized by having a decorative layer formed by applying a transparent synthetic resin paint containing resin beads or glass beads and then applying a matte transparent synthetic resin paint.

The preferred embodiments of the present invention will be specifically described below.

The cement-based molded article having the decorative layer according to the present invention has the first feature in order to prevent the occurrence of efflorescence, the deterioration of the coating film due to efflorescence, the poor adhesion, the deterioration of the decorative layer, etc. which are found in the cement-based molded article. As the layer, a penetrating epoxy resin coating, for example, "Impregnation Primer Epo" manufactured by Asia Kogyo Co., Ltd., "Penetration Sealer" manufactured by Kansai Paint Co., Ltd., "Penetre E" manufactured by Fujikura Kasei Co., Ltd.
P ", a paint corresponding to" Mighty Sealer E "manufactured by Dainippon Paint Co., Ltd., is applied at 0.1 to 0.3 Kg / m ² and 3
After leaving it for 0 to 60 minutes, it is dried at 80 ° C. for 1 hour and then cooled to room temperature.

As the second layer, a commercially available epoxy resin putty is used to repair defects such as burrows and scratches remaining on the surface of the base material, and after leaving it for 1 day, it is smoothed with # 100 to # 200 sandpaper. A commercially available acrylic resin paint or acrylic urethane paint for the surface and for the third layer.
Preferably, the white acrylic urethane resin paint used for the outer wall of the concrete structure has a dry average film thickness of 25 to 6
0 μm, preferably 30 to 45 μm
After leaving it for 30 to 60 minutes, it is dried at 80 ° C. for 1 hour and cooled to room temperature.

Next, after the surface condition after coating is inspected and it is confirmed that there is no abnormality, the adhesion between the third layer as the fourth layer and the ink used for the fifth layer for reproducing the image original to be formed is good. In order to achieve this, a white acrylic urethane resin paint is applied to a dry average film thickness of 10 to 15 μm,
It is left to dry at room temperature for about 15 to 30 minutes so that the dryness can be confirmed with the touch of a finger. Then, a specific position of a special spray printing machine consisting of an image scanner, a computer having image analysis and three primary color (cyan, magenta, yellow) color separation functions and a computer-controlled three primary color or four primary color and black four color spraying machine. The cement-based molded products that have been processed up to the fourth layer are arranged in a number corresponding to the area that requires drawing, and are regenerated with a special spray printing machine, and left at room temperature for 60 minutes or more and then 60 After drying at ~ 100 ° C for 60 minutes, a transparent acrylic urethane resin coating, a transparent acrylic silicone resin coating, a transparent coating used for the outer wall of a concrete building that is generally commercially available for the purpose of protecting the fifth layer as the sixth layer. One of the fluororesin paints is applied to a thickness of 20 to 30 μm, left for 30 to 60 minutes, and then dried at 80 to 100 ° C. for 1 hour.

Furthermore, as the seventh layer, glare prevention against reflected light having a smooth surface, anti-slip property on floor surface and sidewalk surface, and retroreflectivity utilizing the unique refraction property of transparent spherical beads are imparted. The purpose of adding depth to the reproduced image is to pass through a 4-mesh screen,
Transparent spherical resin that is insoluble in an organic solvent and does not pass through a 60 mesh sieve, preferably through a 40 mesh sieve, such as crosslinked acrylic resin, crosslinked styrene resin, polyethylene resin, polypropylene resin, polyester resin, and other beads, and glass. 5 to 70 parts by weight of beads or the like, preferably 10 to 50 parts by weight, more preferably 15 to 35 parts by weight, is used as a transparent acrylic urethane resin paint, 100 parts by weight of transparent acrylic silicone resin paint, or transparent fluororesin paint. In addition to 0.25 to 0.4 Kg / m ² after stirring. After a while, leave it for 30 to 60 minutes and then 80 to 100
After drying at 0 ° C. for 1 hour, the eighth layer is formed. The eighth layer is extremely effective in the case where the surface shape of the seventh layer alone cannot prevent glare against reflected light. This 8th layer is made of transparent acrylic urethane resin paint, transparent acrylic silicone resin paint, or transparent fluororesin paint.
100 parts by weight of organic and / or inorganic fine powder such as asbestine, calcium carbonate, precipitated barium sulfate, clay kaolin, aluminum silicate, hydrous fine powder silicic acid,
Inorganic fine powder called extender pigment such as bentonite, talc, hydrous magnesium silicate, precipitated magnesium carbonate, barium sulfate, precipitated barium sulfate, barium carbonate, and / or polyethylene, polypropylene, fluoropolymer, polyurethane, polystyrene, A dispersion of 0.5 to 30 parts by weight of an organic solvent insoluble synthetic resin fine powder such as polyamide, polyester, or polyacryl is used as 0.
It is formed by applying 1 to 0.3 Kg / m ² and drying at 80 to 120 ° C. for 1 hour, whereby a cement-based molded product having a decorative layer faithfully reproducing various images, characters, etc. Obtainable.

The cement-based molded article having a decorative layer reproducing various images, characters and the like according to the present invention exhibits excellent effects in the following points.

(1) Interlocking blocks, pavement blocks, slate boards, PC for cement type moldings
There are boards, perforated PC boards, GRC boards, hollow concrete blocks, ALC boards, extruded cement boards, etc. manufactured in various factories, and their shapes are various, but they do not have an extreme three-dimensional shape. As long as it has a flat surface, any original such as an image or a character can be reduced or enlarged to a desired size and reproduced without limitation in area.

(2) When the molded article having a decorative surface produced by the present invention is applied, the application time can be greatly shortened as compared with the conventional method, and the economy is excellent.

(3) Since it is excellent in various mechanical, physical and chemical properties, and particularly excellent in resistance to efflorescence peculiar to cement-based moldings, it is a very durable material for producing a comfortable space.

(4) Since the spherical beads provide the non-slipping property, there is no danger to the human body due to crushed stones and the like.

[0021]

EXAMPLES The present invention will be described below based on examples.

An example manufactured by using an interlocking block having a size of 10 × 20 cm and a thickness of 6 cm and a size of 10 × 10 cm and a thickness of 6 cm as a cement-based molding will be described in more detail according to the following steps. (Process-1) After removing the burrs at the corners of the Sumitomo Cement interlocking block (hereinafter abbreviated as "block") that has been naturally cured for 30 days after demolding, remove foreign matter adhering to the coated surface with a wire brush. After removing, clean with air blow. (Step-2) Blocks were lined up for 1 m ² minutes (50 pieces), 200 g of the main ingredient "Penetre EP" manufactured by Fujikura Kasei, and 200 g of "Penetre EP" curing agent were mixed and painted using an air spray. Immediately after coating, the applied amount is 0.23 Kg / m ²
Met.

After left in a room at 18 ° C. for 30 minutes, it was placed in a dryer adjusted to 80 ° C. and dried for 1 hour. (Process-3) Using a spatula for putty on the surface of the block cooled at room temperature, apply the product name "Mighty Epoxy Putty" manufactured by Dainippon Paint Co., Ltd. to repair the defective parts, burrows, and pinholes, and leave it for one day and then sand Polished with paper # 150 and cleaned with air spray. (Process-4) Line up blocks of 1 m ² again, 450 g of "Acretan C White", a main agent made by Fujikura Kasei, 30 hardeners
g, 200 g of dedicated thinner are mixed, the first coating is performed by air spray, and the coating is left for 20 minutes for the second coating, then 3
After drying at room temperature for 0 minutes, it was placed in a dryer adjusted to 80 ° C., dried for 1 hour, and cooled to room temperature. The film thickness after drying was 42 μm. (Step-5) 150 g of the main ingredient of "Acretan C White" manufactured by Fujikura Kasei Co., Ltd., 10 g of a curing agent, and 50 g of a dedicated thinner were mixed, coated with an air spray, left for 20 minutes, and then moved to the next step. The film thickness after drying was 12 μm. (Step-6) Write the number according to the construction procedure on the side of the block that has been processed up to the above Step-5, install the blocks in the special spray printing machine in the order of numbers, and write on the B-5 plate. The captured image is read by an image scanner, computer processed, and the data is transferred to a special spray printing machine for 1 m ²
Magnified and drawn.

After the drawing was completed, it was left for 2 hours, placed in a dryer adjusted to 100 ° C., dried for 1 hour and cooled to room temperature. (Step-7) Fujikura Kasei's "Acretan C Clear" main agent 300 g, hardener 20 g, special thinner 100 g are mixed, air-sprayed and left for 30 minutes, then 10
It was put in a dryer adjusted to 0 ° C., dried for 1 hour, and cooled to room temperature. The film thickness after drying was 24 μm. (Step-8) Pure water 50 kg, 80% saponified polyvinyl alcohol 0.75 kg, calcium phosphate fine powder in a 100 l reaction kettle equipped with a nitrogen introduction tube, a stirrer and a condenser.
Add 5 kg and 15 g of sodium stearate and stir 5
After heating to 0 ° C., 14 kg of methyl methacrylate, 6 kg of normal butyl methacrylate, 0.1 kg of ethylene glycol dimethacrylate, and 0.2 kg of benzoyl peroxide were added, and the mixture was heated at 60 ° C. for 2 hours, then 8 kg.
The pearl polymerization reaction was performed at 0 ° C for 2 hours and at 100 ° C for 3 hours, cooled, dehydrated, washed 5 times with warm water at 50 ° C, dried in a vacuum dryer, and then sieved with 4 mesh and 60 mesh. The particles were classified to obtain 12.6 Kg of transparent spherical beads. Fujikura Kasei "Acretan C Clear" 300 g of base compound, 20 g of curing agent, and 70 g of dedicated thinner are mixed with 100 g of the pearl polymerized product obtained above, and coated by air spray. 30
After being left for a minute, it was placed in a dryer adjusted to 80 ° C., dried for 1 hour and cooled to room temperature. The actual coating amount before drying is 0.37K
It was g / m ² . (Process-9) 30 g of Mizusawa Chemical Co., Ltd. product name "Mizukasil P526" is mixed and dispersed in 150 g of Fujikura Kasei "Acretan C clear" main agent, 10 g of curing agent, and 80 g of dedicated thinner, and it is painted by air spray. 30 After leaving it for a minute, it was placed in a dryer adjusted to 110 ° C., dried for 1 hour and cooled to room temperature to obtain a makeup block faithfully reproducing a full-color image. The actual coating amount before drying was 0.12 Kg / m ² .

Claims (2)

(57) [Claims] 1. A surface of a cement-based molded article base material is coated with a penetrating epoxy resin paint, the surface of the penetrating epoxy resin paint is adjusted with an epoxy resin putty, and a white synthetic resin paint is further applied to the surface. Then, a desired image, character, etc. is formed on the coated surface of this white synthetic resin by printing, a transparent synthetic resin coating is applied to this printed surface, and further resin beads or glass beads are contained. A cement-based molded article having a decorative layer formed by applying a transparent synthetic resin paint after applying the transparent synthetic resin paint. 2. The cement-based molded product according to claim 1, wherein the printing of the image / character is performed by printing based on image information.