JPS6043185B2 - Roller coating method for multi-colored paint - Google Patents

Description

[Detailed Description of the Invention] The present invention is a method of roller coating a multicolored paint,
In particular, the present invention relates to a roller coating method for multi-pattern paint, which is characterized in that everything from undercoating to topcoating is done by roller coating.

Multicolored pattern paints are widely used for painting the interior and exterior of buildings because they not only provide a multicolored pattern, but also a three-dimensional pattern finish to some extent.

This method of applying multicolored paint is commonly used. Since the spray gun has a small nozzle diameter and cannot spray paint, it is necessary to use a mortar gun or a ``Zoracoat gun,'' which is specifically designed for multi-colored paint. The reason is that when multicolored paint is applied with a brush, the pattern is distorted and the special painting effect cannot be utilized. Further, even if roller painting is performed, there is a drawback that a uniform pattern cannot be formed because the paint is not sufficiently contained in the roller and does not adhere to the paint. On the other hand, in architectural painting, roller painting is becoming popular and is expected to become the mainstream painting method in the future, but the advantage of roller painting is that extensive curing is required when using blowguns. However, it requires almost no curing, is easy to work with, does not require much skill on the part of the operator, and can be easily painted in small areas. Therefore, the inventors of the present invention considered applying a multi-colored pattern paint using roller coating, and found that they achieved their goal by using a specific roller to create an uneven surface with an undercoat, and then applying the multi-colored pattern paint on top of the uneven surface. I discovered that. That is, the present invention relates to a roller coating method for a multi-colored paint, which is characterized in that the aggregate-containing paint is roller-coated using a short-bristle roller, and after the paint film has dried, the multi-colored pattern paint is roller-coated using a porous roller. It is something.

In the present invention, after preparing the surface of the object to be painted, such as a building, by removing dust and dirt, apply an alkaline sealer if the surface to be painted is concrete, as in normal painting. In the case of wood, it is preferable to apply a wood sealer to prevent the material from affecting the top coat and to create a uniform pattern.

Next, an aggregate-containing paint is applied with a roller to form a uniform uneven surface.

The roller used is a short hair roller. Short-haired rollers have roller bras currently on the market whose hair (up) is called short-haired, ranging from about 6wrm to long-haired about 31st, but they are much shorter than that. Use limbs in the range of 1 to 5 wm. 5T limbs
If the length is longer than m, a large amount of resin from the paint will adhere to the roller, and the roller will not contain sufficient aggregate, making it impossible to form a uniform uneven surface. The paint components of the aggregate-containing paint include synthetic resin paints, emulsion paints, etc. used for architecture and wood. Examples of the aggregate include natural stone powder such as kansui stone, silica sand, and alumina, which are commonly used in architectural paints, inorganic aggregates such as perlite, and synthetic resin powder. The particle size of these aggregates ranges from 40μ to 900μ, with 40μ
If the roller is smaller, the uneven surface is insufficiently formed, so it is not possible to uniformly paint a multicolored pattern with a roller. On the other hand, if it is larger than 900μ, the coating workability with a short-bristle roller is poor. Further, the content of aggregate in the aggregate-containing paint is about 20 to 50% by weight.

The coating amount of this aggregate-containing paint is 100yId to 250y1
The range is 771'. If the amount is less than 100g1d, the uneven surface will not be formed uniformly, but will be non-uniform, and a multicolored pattern will not be uniformly formed.

On the other hand, if you apply more than 250VI, you cannot apply it in one coat with a short-bristle roller. After applying the aggregate-containing paint with a short-bristled roller and drying it, the multi-colored paint can be applied with a porous roller to obtain a multi-colored pattern.

An example of the porous roller used in the present invention is a sponge-like roller made of a foam such as polyurethane and made porous by the bubbles of the urethane foam.

Furthermore, examples include those made from nonwoven fabrics such as vinylidene chloride resin, polyethylene terephthalate, and nylon. Such porous rollers have a large number of holes, but if the diameter of the holes is too large or small, it is difficult to form a multicolored pattern, so it is normal to have about 5 to 100 holes on an inch line. Suitable for pattern finishing of the present invention. The thickness of the foam layer or nonwoven fabric layer of the porous roller of the present invention is 1 to 5 cm! n range, preferably 1 to 3
Cr! The range is 1.

If it exceeds 5CW1, the amount of multi-colored paint will be large for one roller finish, and the pattern will become dumpling-like and not uniform.

Also, roller coating on vertical parts can cause dripping. Furthermore, by covering the foam layer or nonwoven fabric layer of the porous roller with a net, it is possible to prevent paint from splashing during painting. The method of using this porous roller is the same as that used for multi-colored paint, and a normal roller coating method may be used.

As the multi-colored paint used in the present invention, conventionally known paints can be used.

For example, a type in which an oil-based colored gel is dispersed in an oily dispersion medium, a type in which an oil-based colored gel is dispersed in an aqueous dispersion,
Alternatively, there is a type in which aqueous colored particles are dispersed in an aqueous dispersion medium. The viscosity of the multicolored paint is within the range of 60 to 120 KU for good roller suitability, preferably 70 to 100 KU.
Any value is fine. A feature of the present invention is that all painting steps from undercoating to topcoating can be performed using a roller, and moreover, the multi-colored paint can be finished with a roller.

This is achieved by applying the aggregate-containing primer paint with a short-bristle roller to form a uniform uneven surface, and then applying the multicolored pattern paint on top of that with a porous roller without the roller slipping, allowing the pattern to be applied evenly. This was achieved because there were no problems even when painting vertical areas where the roller easily slips. Secondly, since roller coating can be applied to multi-pattern paints, it eliminates curing problems associated with spraying work, improves work efficiency, and greatly contributes to streamlining the painting process. Furthermore, since the undercoat layer is uneven, when a multicolored pattern paint is applied, a multicolored pattern with excellent three-dimensional effect can be applied. The present invention will be explained below with reference to Examples and Comparative Examples.

Examples 1 to 6 After removing dust, oil, etc. from the concrete surface and thoroughly drying the base surface, a commercially available alkaline sealer is applied.

Next, apply a paint containing various aggregates to the undercoat shown in Table 1 with a pile of 2.079! Paint with a roller using a short-bristled roller brush. Then, after leaving it at room temperature for a day and night, a multicolored pattern paint was applied as a top coat using a roller. The test results are shown in Table 2. Comparative Example 1 A test was conducted using a commercially available roller made by Nappu Co., Ltd., except that the undercoat did not contain aggregate in Example 1.

The test results are shown in Table 2. Comparative Example 2 An attempt was made to apply the undercoat of Example 1 using a common commercially available roller made by Nappu, but the aggregate did not adhere sufficiently and a uniform uneven surface could not be formed.

Comparative Example 3 In Example 1, the top coat was applied using various rollers.

Claims (1)

[Claims] 1. A roller coating method for multi-colored paint, which is characterized in that the aggregate-containing paint is applied with a short-bristle roller, and after the paint film dries, the multi-colored pattern paint is applied with a porous roller.