JP5091825B2 - Molded concrete coating method and decorative concrete molded products - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve such a problem that conventional concrete blocks are molded in various shapes by molding cannot be decorated by coating, so that their applications are limited to civil engineering members, because their rough skin surface does not produce sufficient affinity with, and fixability of, a coating. <P>SOLUTION: Rough skin of the concrete surface is improved by surface treatment with repetition of cleaning and polishing of the surface, paste-like undercoating by a spatula and drying with hot air at a low temperature. Sufficient fixability of the coating to the concrete surface is obtained by raising the affinity with the coating with repetition of spray-coating a volatile mixed solvent and drying with hot air at a low temperature. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention is a method of producing a decorative material such as a wall surface or a floor surface, a table board, a shelf board, a tombstone, or the like that can be molded from concrete, using a concrete as a base material, and performing a lacquered glossy decorative coating. The present invention relates to a method for coating molded concrete for use in the direction and a decorative concrete molded product using the coating method.

  Conventionally, molded concrete is rarely used as a concrete block other than as a civil engineering member such as a retaining wall or a road gutter, and it has never been considered to paint it.

However, recently, lacquerware and lacquering have attracted attention as traditional Japanese craft techniques, and painting based on its glossy transparency has created a variety of painting objects and has come to be used on the other side. ing. For example, Patent Document 1 conventionally applies lacquering, which has been based on wood or bamboo, to a metal-based accessory, and Patent Document 2 applies a lacquer-like decoration to a urethane mouse computer pad, Patent Document 3 proposes forming a concavo-convex pattern on a lacquered coating film.
Japanese Unexamined Patent Publication No. 2000-141995 Utility Model Registration No. 3063756 JP-A-8-142599

  However, for concrete moldings with rough surface texture, weak affinity with paint, and problems with fixing power, it is difficult to apply decorative coatings. No idea has been made. However, the technology related to concrete molding has been developed together with the formwork technology, and can be mass-produced as a large base material, which is advantageous in terms of cost compared to other craft base materials. It is worth excavating.

Recently, marble has been used for wall and floor decorations, table boards, shelf boards, etc., and its profound and high-class feeling has been attracting attention. There is a problem in using it as a building material that is out of the reach of ordinary people and needs to meet a large amount of demand.

  The present invention overcomes the roughness of the concrete surface by repeating surface cleaning by surface cleaning and polishing, pasting of a paste-like base coating, and hot air drying at low temperature, and the compatibility with the coating and fixing power are as follows. By spraying volatile mixed solvent and repeating hot air drying at low temperature, the affinity with the paint was increased, and a certain paint fixing force was obtained on the concrete surface.

  In addition, the surface paint is applied by spraying with a black surfacer containing about 30% of additive liquid and thinner, and the base color of the decoration is fixed by overcoating with a polyurethane resin color paint. By finishing with a transparent urethane resin paint, In addition to protecting the colored layer, it gives gloss to the paint color so that it can produce an astringent feeling similar to lacquer.

  In addition, color pigments are used at the stage of overcoating with polyurethane resin color paint, and painting or patterning is possible by handwriting or silkscreen printing so that it can be used for a variety of decorative orientations. By using paint, it has become possible to prevent slip accidents when used as flooring, and to contribute to the production of an astringent and profound feeling on the color surface.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment in which a pet tombstone is manufactured by using a decorative concrete molded product according to the present invention. The manufacturing process is as follows. First, a block base material is formed by a mold for forming a desired tombstone shape from concrete. Then, the surface is cleaned to remove dirt and foreign matters adhering in the mold, and the corners and face portions are polished smoothly using sandpaper # 320.

  Therefore, as a pretreatment to increase the affinity between paint and concrete, spray coating is performed with a volatile mixed solvent in which a paint fixing solvent and thinner are mixed at a ratio of 1: 1. Company-made Dream TXL300 Clear (Liquid A), the company's Dream TXL2653 (Liquid B) is used, the liquid A and liquid B are mixed in a mixing container, and the entire surface excluding the bottom of the block base 1 The paint was sprayed on.

  After painting, wait for the volatile solvent to dry, put it in a gas-type hot air drying furnace, bake and dry with hot air of about 30 degrees C for 2-3 hours, and then mix air into the surface of the block base material The unevenness such as pores formed by the above is smoothed by applying a paste-like base paint. As the paste-like base paint, synthetic resin paint base No. 2 (made by Cashew Co., Ltd.) containing cashew nut bean skin oil as the main component is added, and kneaded with 30% thinner containing toluene and xylene as components. Apply a spatula to smooth the surface.

  After the surface is smoothly adjusted by applying the base paint, the surface is naturally dried in a room for about 24 hours (at least 24 hours or more) and then the surface is polished by sandpaper # 320. This is a pretreatment process for forming the base of the substrate. Spray coating with a volatile mixed solvent, hot air drying at about 30 ° C., application of a paste-like base paint, and drying for 24 hours form a series of pretreatment processes.

  In other words, the second pretreatment process is started by spraying a volatile mixed solvent onto the block base material which has been dried for 24 hours and polished with sandpaper. One pre-processing process is finished by finishing. It has been confirmed that by repeating this pretreatment process 2 to 3 times, the affinity between the paint and the concrete is increased, and the intermediate coating is stably fixed on the surface of the block substrate.

  Next, spray coating is applied to the block base material that has been pre-processed by applying a black surfacer paint (TXL2600) with # 38B solution and about 30% thinner TXL2650 as an intermediate coating, and then placed in a gas hot-air drying oven. Bake and dry with hot air of about 60 degrees C for 30 to 50 minutes.

  Furthermore, it is suitable for tombstones by spraying polyurethane resin paint with polyurethane resin paint containing ethyl acetate and ethyl acetate and adding about 30% thinner with toluene and xylene as main ingredients to polyurethane resin paint mainly containing butyl acetate. Colored, put in a gas-type hot air drying furnace, and baked and dried with hot air of about 60 degrees C for 30 to 50 minutes.

  After baking and drying, the surface of the decorative concrete 1 decorated by the above-mentioned steps is painted with bamboo plexus 3 by silk screen printing using a coloring pigment, handwritten on the pet gravestone 2 and transparent urethane resin Spray of paint (China Paint Co., Ltd., U-Flex No. 200) containing xylene, ethyl acetate, and butyl acetate as a component and adding about 30% of China Paint Co., Ltd., which is mainly composed of toluene and xylene. The final finish is applied by painting, put in a gas type hot air drying furnace, and baked and dried by hot air of about 80 to 100 degrees C for 40 to 50 minutes.

  Thus, the decorative concrete 1 is completed as a tombstone for pets. In addition to the block base having a slightly complicated shape as described above, the painted surface is smooth and glossy, so that the block base formed into a simple square plate can be used as a large tile material attached to a wall or floor. Can also be used.

  In addition, because it has a pseudo stone-like luster and smoothness, it can be molded into a display shelf as shown in FIG. Is possible. It has the effect of being able to construct a wash basin with pseudo stone quality at a relatively low cost.

  Furthermore, when used on items that are placed on objects such as kitchen sinks and table boards, after the painting and patterning process, finish coating with a non-slip paint is used instead of the finish with the transparent urethane resin paint. By doing so, it is possible to prevent a slip accident in which an object placed on the top slides down.

  For processing with non-slip paint, add B liquid containing ethyl acetate and butyl acetate to Acesoft SS Clear manufactured by Cashew Co., Ltd., and add about 30% of cashew thinner made mainly of toluene and xylene. After spraying and painting for 8 hours, it is dried in a gas-type hot-air drying furnace for 50 minutes with hot air of about 60 degrees C.

  Since the present invention is configured as described above, by processing a concrete block that can be produced as a precast concrete as a base material, a pseudo block-like transparency and dignity are imparted to the base material of various shapes. The use of concrete blocks, which has been limited to civil engineering materials, has been expanded so that it can be used in many ways.

The Example of the decorative concrete molded product by this invention is shown, and it is a perspective view of the tombstone for pets which decorated and painted. Similarly, it is a perspective view showing a state bag that has been put into practical use as a decoratively decorated display shelf board. Similarly, it is the perspective view which shows the state which was put into practical use as a sink.

Explanation of symbols

1 Decorated concrete 2 Gravestone inscription by hand-drawn painting 3 Painting by silk screen printing

Claims (6)

After spray-coating with a volatile mixed solvent in which the ratio of paint fixing solvent and thinner, which increases the affinity between paint and concrete, is used as a base material, and the surface of the molded concrete is cleaned and polished, hot air drying oven Apply a paste-like base coating to which the first step of baking and drying for about 2 to 3 hours at a temperature of about 30 ° C. and a thinner of about 30% is applied to the base material subjected to the first step with a spatula. In addition, the second step of performing surface polishing with sandpaper after being naturally dried in a room for about 24 hours was repeated several times continuously with the first step, and about 30% of an additive solution and thinner were added to the black surfacer. perform intermediate in spraying paint, a third step of performing drying by baking for 30 minutes to 50 minutes by 60 ° C temperature of approximately in a hot air drying furnace, colored in a predetermined color polyurethane Performed overcoated with Tan resin color paint additive solution and thinner the 30% addition sprayed coating, and a fourth step of performing drying by baking for 30 minutes to 50 minutes by 60 ° C temperature of approximately in a hot air drying furnace, the 4 process performed finish in the completed additive solution to a transparent urethane resin paint base material and thinner the 30% addition was sprayed paint, 40 minutes by 80 to 100 ° C temperature of approximately in a hot air drying oven ~ 50 minutes A method for painting molded concrete, comprising sequentially performing the fifth step of baking and drying The method for painting molded concrete according to claim 1, wherein an appropriate color pigment is used for the base material for which the fourth step has been completed, and painting or patterning is performed by handwriting or silkscreen printing. The method for coating molded concrete according to claim 1 or 2, wherein a non-slip paint is added to the transparent urethane resin paint in the fifth step to increase the coefficient of friction of the paint surface. After cleaning and polishing the surface of the concrete molded product molded into the required shape, and spraying with a volatile mixed solvent in which paint fixing solvent and thinner, which enhances the affinity between paint and concrete, are mixed at a ratio of 1: 1. The surface of a concrete molded article that has been subjected to a pretreatment step of baking and drying for 2 to 3 hours at a temperature of about 30 ° C. in a hot air drying furnace, and a paste-like base paint with about 30% thinner added thereto. The step of coating the surface with candy and naturally drying in the room for about 24 hours and then polishing the surface with sandpaper was repeated several times with the pretreatment step, and about 30% of the additive solution and thinner were added to the black surfacer. spraying performed intermediate paint, performs drying by baking for 30 minutes to 50 minutes by 60 ° C temperature of approximately in a hot air drying furnace, predetermined Performing overcoated with additive solution and thinner the 30% addition was sprayed paint colored polyurethane resin color paint color, perform baking and drying between 30 minutes to 50 minutes by 60 ° C temperature of approximately in a hot air drying furnace, After finishing baking and drying, the concrete molded product is finished with a spray paint in which about 30% of additive liquid and thinner are added to a transparent urethane resin paint, and then heated for 40 minutes to 50 minutes at a temperature of about 80 to 100 degrees C in a hot air drying oven. Decorative concrete molded product characterized by baking and drying between Performing overcoated with a predetermined additive solution and thinner the 30% addition was sprayed paint colored polyurethane resin color paint color, the baking and drying of 30 minutes to 50 minutes by 60 ° C temperature of approximately in a hot air drying oven 5. The decorative concrete molded article according to claim 4, wherein an appropriate color pigment is used for the concrete molded article at the stage of performing painting or patterning by handwriting or silk screen printing. 6. The decorative concrete molded article according to claim 4 or 5, wherein a non-slip paint is added to the finish transparent urethane resin paint to increase the coefficient of friction of the paint surface.