JP2007289873A - Antibacterial/antifouling coated item - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antibacterial/antifouling coated item which allows a formation of a coating layer having a simple arrangement and combining antifouling and antibacterial functions, exerts antifouling and antibacterial functions reliably and independently and can meet a variety of user's requirements for antifouling and antibacterial performance by modifying the extent of coating to which an antifouling coating and an antibacterial coating are applied separately in minute areas. <P>SOLUTION: The antibacterial/antifouling item has a coating layer 2 formed on a substrate 1 by an on-demand coating system. The coating layer 2 is formed by applying an antifouling and an antibacterial coating separately in minute areas. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an antibacterial / antifouling paint formed by on-demand painting.

  Conventionally, Patent Document 1 discloses that a coating layer that has two functions of antibacterial property and antifouling property is formed by coating a surface of a base material with a paint in which an antibacterial agent and an antifouling agent are added and mixed. Are known.

  In the above-described conventional example, a paint in which an antibacterial agent and an antifouling agent are added and mixed is applied by spray coating, roll coating, flow coater coating, or the like.

  However, in coatings that have both antibacterial and antifouling properties formed by spraying, roll coating, flow coater coating, etc., with a mixture of antibacterial and antifouling agents added and mixed In order to respond to various customer demands such as whether antibacterial or antifouling functions are given higher priority, antibacterial agents, antifouling agent addition amount in paints, antibacterial agents It is necessary to adjust the paint that changes the ratio of addition of antifouling agent, etc. each time, and to apply the paint adjusted to meet the individual demands by spray painting, roll painting, flow coater painting, etc. It is difficult to adapt to a wide variety and small-scale production (painting), and the paint layer is composed of a paint mixed with an antibacterial agent and an antifouling agent. Dispersion state becomes uneven If there is a difference in specific gravity between the antibacterial agent and the antifouling agent, one is rich on the surface side of the coating layer and the other is rich on the bottom side of the coating layer. Among the two functions of sex, there is a problem that only the agent rich on the surface side may function.

  In addition, paint layer with antibacterial agent and paint layer with antifouling agent are applied separately on the surface of the substrate to form a paint layer consisting of antibacterial paint layer and antifouling paint layer. However, in the case where the paint is applied by spray coating, roll coating, flow coater coating or the like as in the prior art, it can be applied only in a wide area, and a minute area cannot be applied separately. Therefore, in a wide area with different colors, some parts have antibacterial properties, but there is no antifouling property, and some parts have antifouling properties but no antibacterial properties. There is a problem that antibacterial and antifouling paints having both antibacterial and antifouling functions cannot be constructed.

On the other hand, an on-demand coating method represented by inkjet is also known in the past, and the on-demand coating method represented by inkjet is more accurately at a target position that is smaller than existing coating methods. By ejecting (spraying), it is possible to create a clear image comparable to a photograph. However, with the conventional on-demand method, a clear image is obtained by painting a plurality of paints with different colors in a minute area. The multiple paints are just the same, i.e., single-function, except that the paints are just different pigments and different colors. In addition, it does not apply different types of functional paints with different functions. A charge did not exist prior example, which are constituted by separately applying a micro region.
JP-A-5-309328

  The present invention has been invented in view of the above-described conventional problems, and can be a coating layer having different functions of antifouling property and antibacterial property with a simple structure. Both of these different functions can be demonstrated reliably, and the anti-fouling and antibacterial properties can be met by customer demands depending on the degree of coating in the micro area between the antifouling paint and the antibacterial paint. The object is to provide antibacterial and antifouling paints that can meet various demands.

  In order to solve the above-mentioned problems, the antibacterial / antifouling coating product according to the present invention is a coating layer 2 formed on a substrate 1 formed by on-demand coating, and the coating layer 2 However, this is characterized in that the antifouling paint and the antibacterial paint are separately applied in a minute region.

  By adopting such a configuration, an anti-smudge coating material 2a formed by applying anti-smudge paint to a minute region by on-demand coating, and antibacterial paint It is formed by coating the micro-coating part 2b having an antibacterial function formed by coating, and has a simple function and a single function of antifouling property by the micro-coating part 2a having an antifouling function. In addition, the micro-coating part 2b having an antibacterial function adjacent thereto can exert a single function of antibacterial properties intensively and reliably, and these are separately applied in a minute region. In addition, it is possible to provide an antibacterial / antifouling coating material having the coating layer 2 which is excellent in antibacterial properties and hardly stains. In addition, since the coating layer 2 is configured by separately coating a paint having an antifouling property and an antibacterial paint in a minute region by on-demand painting, a paint having an antifouling property in the minute region And antibacterial and antifouling paints that meet various customer demands for antifouling and antibacterial properties, depending on the degree of coating in a microscopic area with antibacterial paints. .

  Further, it is preferable that the antifouling paint and the antibacterial paint have the same color.

  By adopting such a configuration, the appearance of the paint layer 2 is the same even though the paint layer 2 is configured by coating the paint having antifouling properties and the paint having antibacterial properties separately in a minute region. An antibacterial / antifouling paint having an appearance that is formed by applying paint can be formed.

  Further, it is preferable that the antifouling paint and the antibacterial paint have different colors.

  By adopting such a configuration, it is painted in different colors in a minute area, the appearance of the coating layer 2 having excellent antibacterial properties and difficult to stain can be made into a fine spot pattern, and further, an antifouling function The part that has antibacterial function and the part that has antibacterial function can be visually distinguished, and the degree of antifouling function, antibacterial function, and which function has higher priority depending on the ratio of the area occupied by both colors in the spot pattern You can visually understand that, and you can visually select a function that corresponds to the place of use and the customer's request.

  In the present invention, it is possible to provide an unprecedented coated material that can effectively exhibit antifouling function and antibacterial function with a simple configuration, and it is possible to provide antifouling property and antibacterial property depending on the degree of painting in a minute area. There is an advantage that antibacterial and antifouling paints can be provided in response to various customer requests.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  FIG. 1 shows an antibacterial / antifouling paint A of the present invention. The antibacterial / antifouling coating A is formed by forming the coating layer 2 on the surface which is the coating surface of the substrate 1. Examples of the base material 1 include construction-related members, various steel plates, films, plastic members, inorganic materials, and the like, but there are no particular limitations on the materials. The coating layer 2 is formed by on-demand coating such as inkjet, and the anti-fouling function is formed by a micro-coating portion 2a having an anti-staining function and an anti-bacterial property. The fine coating portion 2b having a function is separately formed in a fine region.

  In other words, in the embodiment, the innumerable micro-coating portion 2a having an antifouling function and the innumerable micro-coating portion 2b having an antibacterial function are adjacently integrated so as to be alternately present on the entire surface of the coating portion 2. Exists.

  In order to form the coating layer 2 in which the innumerable micro-coating portions 2a having the antifouling function and the innumerable micro-coating portions 2b having the antibacterial function are alternately present, coating is performed by on-demand coating such as inkjet. To form.

  The on-demand coating will be described by taking an inkjet coating method as an example. By spraying several picoliters of ink liquid (paint) from one nozzle and spraying it onto the target position on the surface of the substrate 1, the sprayed paint Is formed by forming a coating layer 2 on the surface of the base material 1 by forming a surface by forming the dots continuously or accumulating. In the present invention, first, antifouling properties are obtained. Either one of the paint or the antibacterial paint is ejected from the nozzle, and as shown in FIG. 2 (a), an infinite number of independent dots exist or an infinite number of dot aggregates in which a plurality of dots are gathered Spray to exist independently. Next, as shown in FIG. 2 (b), the other paint out of the paint having antifouling property or the paint having antibacterial properties is ejected from another nozzle, and is ejected in the above-described manner to form a dot interval or dot aggregate Spray to fill the gaps between them. In other words, minute regions of paint having antifouling properties and minute droplets of paint having antibacterial properties are alternately arranged so that a minute region is separately applied.

  In FIG. 2, first, as shown in FIG. 2A, an antifouling paint is sprayed to form an antifouling micro-coating portion 2 a made up of dots or a dot aggregate in which a plurality of dots are assembled, and thereafter As shown in FIG. 2 (b), the antibacterial property is composed of dots or a dot aggregate in which a plurality of dots are gathered by spraying antibacterial paint so as to fill the gaps between the innumerable antifouling micro-painted portions 2a. Although the coating layer 2 is formed by forming the minute coating portion 2b having, an antibacterial coating material may be sprayed first and an antifouling coating material may be sprayed later.

  Here, the paint having antifouling property is obtained by kneading and adding an antifouling agent in the paint, and as the antifouling agent used, for example, fluorinated resin powder can be used. It is not limited only to this, Various conventionally well-known antifouling agents can be used.

  In addition, the antibacterial paint is an antibacterial agent kneaded and added to the paint, and as the antibacterial agent used, for example, silver silica gel type antibacterial agent particles can be used. However, various known antibacterial agents can be used.

  The antibacterial / antifouling coating material A having the above-described configuration forms the coating layer 2 by alternately including innumerable fine coating portions 2a having an antifouling function and innumerable fine coating portions 2b having an antibacterial function. Therefore, the single function of antifouling can be intensively exerted by the fine coating portion 2a having the antifouling function, and the single function of antibacterial property can be concentrated by the minute coating portion 2b having the antibacterial function adjacent thereto. Since these are alternately present adjacent to each other in a minute region, the coating layer 2 having excellent antibacterial properties and resisting contamination is seen as a coating portion 2 having a certain spread as a set of minute regions that have been separately painted. The antibacterial / antifouling coating material A having the above can be provided.

  In addition, since the coating layer 2 is configured by separately coating the paint having antifouling properties and the paint having antibacterial properties in the minute areas by on-demand painting, the antifouling in the minute areas as described above. Depending on the degree of application of the paint having the antibacterial property and the paint having the antibacterial property in the minute area, for example, the application region of the paint having the antifouling property in the minute area is separately applied so that the paint having the antibacterial property is widened. Or, on the contrary, when changing the coating ratio or changing the ratio of coating, the paint from each nozzle can be changed without changing the formulation of antifouling paint and antibacterial paint. It can be easily handled simply by controlling the discharge. Antibacterial / antifouling paints with antifouling and antibacterial functions can be constructed simply by responding to the place of use, purpose of use, or customer demand.

  In addition, as described above, by applying the on-demand method, microscopic droplets of antifouling paint and microscopic droplets of antibacterial paint are alternately arranged and applied separately, so that droplets and drops can be separated. However, if the solvent for the antifouling paint and the solvent for the antibacterial paint are made of a material that does not mix, such as oil and water, Mixing between them can be further prevented.

  Furthermore, the antifouling paint and the antibacterial paint have the same color (that is, the pigment added to the antifouling paint and the pigment added to the antibacterial paint are the same pigment) ), So that the paint layer 2 having both antifouling and antibacterial functions can be applied by coating the antifouling paint and the antibacterial paint separately in a minute area. The appearance of the layer 2 can be such that it is configured by applying the same coating.

  Further, the antifouling paint and the antibacterial paint have different colors (that is, the pigment added to the antifouling paint and the pigment added to the antibacterial paint are different) Thus, the coating layer 2 having excellent antibacterial properties and difficult to be stained can be made into a color pattern such as a fine spot pattern and the appearance can be improved. Moreover, the punctate part having antifouling function and the punctate part having antibacterial function can be visually distinguished, and the degree of antifouling function and antibacterial function can be determined by the ratio of the area occupied by both colors in the spotted pattern. , Which function is prioritized visually, and it is easy to visually select from multiple types of antibacterial and antifouling paints A that have functions that meet the usage location and customer requirements It becomes possible to do.

  In addition, as the coating layer 2 formed in the base material 1, the coating layer 2 whole surface has the fine coating part 2a which has an antifouling function, and the micro coating part 2b which has the antibacterial function formed with the coating material which has antibacterial property. Alternatively, the coating layer 2 may include a minute coating portion 2a having a antifouling function and a minute coating portion 2b having an antibacterial function formed by a paint having antibacterial properties. Alternating parts, other parts formed by applying only antifouling paint, or parts formed by applying antibacterial paint only, or antifouling function Further, it may be a portion formed by applying a paint having no antibacterial function.

It is an expanded sectional view of one embodiment of the present invention. (A) (b) is sectional drawing for description which shows the coating order same as the above.

Explanation of symbols

1 Base material 2 Paint layer

Claims (3)

  The coating layer formed on the base material is formed by on-demand coating, and the coating layer separates the antifouling paint and the antibacterial paint in a minute region. Antibacterial / antifouling paint characterized by comprising   The antibacterial / antifouling paint according to claim 1, wherein the antifouling paint and the antibacterial paint have the same color. The antibacterial / antifouling paint according to claim 1, wherein the antifouling paint and the antibacterial paint have different colors.

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