JP5865592B2 - How to paint siding material - Google Patents

Description

  The present invention relates to a coating method for performing a so-called regeneration process in which a surface of a siding material used mainly for an exterior material of a building, for example, a ceramic siding material is reproduced in an original state. In particular, exterior materials for low-rise buildings often use building materials called ceramic siding materials that are molded and cured and hardened with cementitious raw materials and fibrous raw materials as main raw materials. In recent years, siding materials with joints that are rich in irregularities, such as bricks, tiles, and stones have been widely used instead of the conventional single-color / flat-tones and single-color / single-patterns. ing. Many of these are colored using a printing method in which a variety of design patterns are formed on the uneven surface with joint ink.

  By the way, it is difficult to reproduce a surface pattern such as unevenness having no regularity as described above in painting work on site.

  Therefore, the above-mentioned types of siding materials such as brick tone require partial coating called touch-up at the time of repair, or it is necessary to repaint the entire surface after deterioration. In the case of a material, when a regeneration process for reproducing the surface to the original state is required, the siding material itself has to be replaced, which is complicated and expensive.

  As a prior art, a non-woven fiber material such as a non-woven fabric impregnated with a semi-transparent high weather resistance emulsion paint is repeatedly pressed on the surface of the base material and pressed to form a first concrete-patterned coating film. There has been proposed a method for reclaiming an exposed concrete surface in which an antifouling coating film having an exposed concrete pattern having a structure in which a second coating film made of a hydrophilic clear coating film is formed on one coating film (for example, a patent) Reference 1).

JP 2001-70876 A

  As mentioned above, the surface of the siding material with the tone of brick or stone has subtle differences in color tone and unevenness, and this is the original surface design. It needs to be reproduced. In addition, the difference in color tone and unevenness become unnatural when there is regularity and directionality, and therefore it must be irregular and nondirectional.

  However, since the painting operation is usually performed using a brush, a roller, or a spray coating machine, directionality and regularity are inevitably produced, and the above conditions are not met.

  Therefore, the present inventor adopts a smooth fiber material as a paint transfer material instead of a brush or a roller, and impregnation is achieved by impregnating the fiber material with the paint and “pressing only” the substrate surface. I found that I could reproduce a pattern that was not there. On the other hand, if the brush or the roller is moved under the act of “painting”, a deviation in the operation direction is inevitably generated. It has also been found that the fiber material is preferably a non-woven nonwoven fabric in order to eliminate the regularity of the fiber weave. Furthermore, there should be no pattern in the dent corresponding to the joint of the brick-like or stone sticking tone, and in order not to apply the paint to the dent, the above-mentioned nonwoven fabric is smooth and has a certain degree of rigidity, It is an essential condition that the nonwoven fabric is in focus. On the other hand, since the exposed concrete surface has no unevenness and there is no portion corresponding to the joint, it is not necessary to give the fiber material rigidity and keep the surface to be coated smooth. In the coating method, the paint may level the uneven surface, and the portion corresponding to the joint may be patterned.

  The present invention has been made in view of the above points, and a painting method for a siding material that can easily reproduce a real surface state of regular brick-like or stone-like tone without regularity and directionality by painting work. It is intended to provide.

In order to achieve the above object, the method of painting a siding material according to the present invention is applied to the surface of a siding material having a joint portion with rich bricks, tiles, or stones, which is rich in unevenness. After the combined colored paint is applied using an applicator or spray coater, it is dried and a colored coating layer is formed by completely concealing the substrate, and the surface to be painted is flat and pinned to the rootstock A non-textured fiber material that is held in a constant thickness is impregnated with a translucent paint as a pattern coating, and the fiber material is repeatedly pressed onto the colored coating layer so as not to be applied to the joint portion and pressure-bonded. It is characterized by.

  In this way, even if the siding material is not replaced at the time of repair or after deterioration, the surface unevenness created by the original brick or stone material can be reproduced by painting and repaired to a state close to a new siding material. .

As described in claim 2, it is preferable that the fiber material is impregnated with a translucent paint as a finish pattern coating, and the fiber material is pressed onto the colored coating layer layer several times while changing the color tone and pressure-bonded.

  In this way, the painted surface other than the joints can be shaded, and the color tone of the brick, tile, or stone surface can be realistically reproduced.

  As described in claim 3, it is preferable that the unevenness of the siding material has a difference of 3 mm or more between the deepest portion and the top of the head.

  In this way, the asserted part and the joint part such as tiles and stones are clearly separated.

  As described in claim 4, it is preferable that a transparent paint having hydrophilicity and a photocatalytic function is applied over the entire surface.

  If it does in this way, it will become difficult to become dirty, and the resistance to dirt as an inorganic substance which tiles, stones, and bricks originally have will be exhibited.

As described in claim 5, the main resin component of the weather-resistant transparent paint is a fluororesin, a siloxane resin, an acrylic silicone resin, a cross-linked acrylic resin, or a resin component obtained by mixing them, and the weather resistance The transparent transparent coating material is preferably a transparent coating material in which a photocatalytic metal oxide is blended with polytetrafluoroethylene having grafted sulfonic acid groups as a resin binder.

  Thus, if a clear coating film having hydrophilicity or a photocatalytic function is provided on the surface, the antifouling property can be exhibited without impairing the design.

As described in claim 6, it is preferable that the resin component of the translucent paint is an acrylic resin, an acrylic urethane resin, an acrylic silicon resin , a fluororesin emulsion, or a mixture thereof.

  According to the siding material coating method according to the present invention, work that has conventionally required replacement at the time of repair or after deterioration and has been expensive and takes a long time can be repaired and repaired by on-site painting work. This simplifies the operation, shortens the work period, and reduces costs.

1 (a) is a front view showing a part of a stone-like siding material, FIG. 1 (b) is a front view showing a part of a brick-like siding material, and the left side of each figure shows a new state at the time of manufacture. The right side of the figure shows the state after repair. It is a perspective view which shows the undercoat operation in the Example of the repair aspect of a brick tone siding material. It is a perspective view which shows the pattern coating operation | work in the Example of the repair aspect of a brick-like siding material. It is a perspective view which shows the pattern coating finishing operation | work in the Example of the repair aspect of a brick tone siding material. It is a perspective view which shows the photocatalyst coating operation | work in the Example of the repair aspect of a brick tone siding material. It is a perspective view which shows the undercoat operation in the Example of the repair aspect of a stone pasting tone siding material. It is a perspective view which shows the pattern coating operation | work in the Example of the repair aspect of a stone pasting tone siding material. It is a perspective view which shows the pattern coating finishing operation | work in the Example of the repair aspect of a stone pasting tone siding material. It is a perspective view which shows the photocatalyst coating operation | work in the Example of the repair aspect of a stone pasting tone siding material.

  Hereinafter, embodiments of the coating method of the present invention will be described with reference to the drawings.

Example 1:
Example 1 which is the coating method about a brick-like siding material is demonstrated based on drawing.

  The brick-like siding material 1 arranges rectangular bricks with a certain interval in the horizontal direction, and has a thickness of 10 mm by providing irregularities in the thickness direction with the front shape stacked at a certain interval in the vertical direction. As shown in FIG. 1B, it is integrally formed on a ceramic base material 2 having a degree. In this example, the height difference between the surface of the brick portion 3 (the top of the head) and the joint portion 4 (the deepest portion) is set to 3 mm or more, and the brick portion 3 and the joint portion 4 are clearly separated. The base material 2 of this example is a precast concrete material, but may be a hygroscopic material such as an unglazed tile.

As an example of the repair method when the entire surface of the siding material 1 is deteriorated,
As shown in FIG. 2, in this example, an “ocher” epoxy resin coating is applied as an undercoat on the entire surface of the siding material 1 along the uneven surface by a roller or a roller 7 of the spray coating machine in this example. Then, although it is dried, in this state, the entire surface including the surface of the brick portion 3 and the joint portion 4 is painted in the ocher color. Desirably, a primer is applied prior to application of the base paint to improve adhesion.

  As shown in FIG. 3, a special applicator 5 is used in which a non-woven fabric for pattern coating 6 having a thickness of about 20 cm square and a thickness of about 5 mm is attached to the lower surface of a rootstock 5a having a grip 5b at the center of the upper surface. 6 is impregnated with a translucent red brick paint (in this example, a fluororesin emulsion of a weather resistant paint). In Example 1, a fluororesin emulsion paint is used, but a highly weather-resistant emulsion paint made of a resin component of either acrylic silicon resin or acrylic urethane resin or a combination thereof can be used. And the coating material impregnated with the nonwoven fabric 6 with the holding part 5b is repeatedly pressed on the surface of the brick part 3, and is crimped | bonded. And let it dry. As a result, a brick-like uneven state having no directionality and no regularity is brought about by the red brick color paint.

  As shown in FIG. 4, the non-woven fabric 6 is impregnated with a red brick paint that is darker and translucent than the above-mentioned pattern-coated red brick color. Here, the surface of the patterned brick part 3 is repeatedly pressed twice or more and pressed to slightly change the color tone. Thereby, the color of the brick part 3 is reproduced realistically. On the other hand, for the joint portion 4, the surface to be coated of the nonwoven fabric 6 is flat and is held by the rootstock 5 a and has a certain degree of rigidity, so that the red brick paint is not applied to the joint portion 4. On the other hand, since the translucent red brick color paint is applied to the surface of the brick portion 3, the color of the surface base of the brick portion 3 also appears on the appearance. For this reason, the color of the surface of the brick part 3 is reproduced realistically, and there is no unnaturalness. If the paint for pattern coating dries in this state, the painting operation is completed.

  Further, as shown in FIG. 5, a transparent photocatalyst paint is applied to the entire surface of the coated siding material 1 with a spray sprayer (not shown). In this example, a transparent paint in which Nafion (registered trademark) is used as a resin binder and titanium oxide which is a photocatalytic metal oxide is used as the photocatalyst paint. If a clear coating film having hydrophilicity and a photocatalytic function is applied to the surface of the siding material 1 in this manner, the antifouling property can be exhibited without impairing the brick-like design. For this reason, the dirt resistance which the original brick-like siding material 1 has is exhibited. For the application of the above-mentioned base coating and photocatalyst coating, other than brush coating, spray coating, roller coating, well-known coating means such as bar coating, dip coating, electrostatic coating, flow coating, etc. are appropriately selected. Can be applied. In addition to titanium oxide, zinc oxide or tin oxide can be used as the photocatalytic metal.

Example 2:
Next, Example 2 made of a siding material with a stone sticking tone will be described with reference to the drawings.

  The siding material 11 with a stone sticking tone is a ceramic base material 12 having a thickness of about 10 mm, which is a frontal shape in which rectangular parallelepiped stone materials are arranged at regular intervals in the horizontal direction and stacked at regular intervals in the vertical direction. Above, it is integrally formed as shown in FIG. The height difference between the surface (head portion) of the stone portion 13 and the joint portion 14 (deepest portion) is set to 3 mm or more, and fine irregularities are also provided on the surface of the stone portion 13.

An example of a repair method when a part of the siding material 11 is damaged will be described.
In this example, as shown in FIG. 6, “white” epoxy resin paint is applied to the entire damaged portion of the siding material 11 by the roller 7 as an undercoat at the damaged portion. And although it dries, in this state, the surface of the stone part 13 and the joint part 14 are painted in the base white.

  Using the special applicator 5, the non-woven fabric 6 is impregnated with a translucent dark brown paint (in this example, an acrylic silicon resin emulsion of a weather resistant paint). The dark brown paint impregnated in the non-woven fabric 6 is repeatedly pressed against the surface of the stone portion 13 with the grip portion 5b for pressure bonding. And let it dry. As a result, a stone-like uneven state having no directionality and no regularity is created by the dark brown paint.

  Subsequently, the non-woven fabric 6 is impregnated with a dark brown or light-colored translucent dark brown or brown paint as compared with the above-mentioned pattern dark brown. Here, it is repeatedly pressed against the surface of the stone part 13 which is first patterned and pressed twice or more to slightly change the color tone. Thereby, the color tone of the stone part 13 is reproduced realistically. On the other hand, as shown in FIG. 7, the joint portion 14 has a flat surface to be coated and is stuck to the lower surface of the rootstock 5a, and the nonwoven fabric 6 is held tightly and has a certain degree of rigidity. Therefore, the paint is not applied to the joint portion 14. On the other hand, since the semi-transparent dark brown or brown paint is scattered on the fine uneven surface of the stone portion 13, the white background of the surface of the stone portion 13 or the dark brown color that was first patterned is also visible. Appear in For this reason, the color of the surface of the stone part 13 is reproduced realistically, and there is no unnaturalness. If the paint for pattern coating dries in this state, the painting operation is completed. Needless to say, a flat fiber material without a fold can be used in addition to the non-woven fabric.

  Further, as shown in FIG. 8, a transparent photocatalyst paint is applied to the entire repaired portion of the coated siding material 11 with a brush (not shown) or a roller (not shown). As the photocatalyst paint, a transparent paint containing Nafion (registered trademark) as a resin binder and titanium oxide of photocatalyst metal oxide is used in this example among polytetrafluoroethylene having grafted sulfonic acid groups. If a clear coating film having hydrophilicity and a photocatalytic function is applied to the surface of the repaired portion of the siding material 11 in this manner, the weather resistance inherent to the stone material is provided, and the antifouling property is maintained without impairing the design of the stone pasting tone. Can be demonstrated. The main resin component of the hydrophilic clear paint may be a fluororesin, a siloxane resin, an acrylic silicon resin, a cross-linked acrylic resin, or a resin component obtained by mixing them.

  In addition to the siding materials 1 and 11 of the first and second embodiments, the present invention can be applied to, for example, a tiled siding material. In addition to the ceramic siding materials 1 and 11 shown in the above embodiment, the coating method of the present invention can be similarly applied to a metal siding material whose base material is a metal plate.

Industrial application fields

  With the painting method of the present invention, brick-like or stone-attached siding materials, which had been thought to be replaced only when they deteriorate, can be regenerated by simple painting work. At present, it is also possible to improve the sense of quality of existing buildings with a single-color siding material painting finish by applying a stone-like or tile-like exterior.

1: Brick-like siding material 2: Ceramic base material 3: Brick part 4: Joint part 5: Rootstock 5b: Grasping part 6: Non-woven fabric 7: Roller 11: Stone-attached siding material 12: Ceramic base material 13: Stone material Part 14: Joint part

Claims (6)

Apply a colored paint that matches the color tone of the siding material to the surface of the siding material that has joints in a brick-like, tile-like or stone-like tone rich in unevenness, and then dry. By forming a colored coating layer by completely hiding the base,
The surface to be coated is flat and is held tightly on the rootstock and is impregnated with a semi-transparent paint as a pattern coating on a non-textured fibrous material of a certain thickness, and the fibrous material is placed on the colored coating layer and the joint portion A coating method for siding materials that is repeatedly pressed and crimped so that it is not applied to the surface.   The method for coating a siding material according to claim 1, wherein the fiber material is impregnated with a translucent paint as a finish pattern coating, and the fiber material is pressed onto the colored coating layer layer several times while changing the color tone and is pressure-bonded.   The method for coating a siding material according to claim 1 or 2, wherein the unevenness of the siding material is such that the difference between the deepest portion and the top of the head is 3 mm or more.   The method for coating a siding material according to any one of claims 1 to 3, wherein a weather-resistant transparent paint having hydrophilicity and a photocatalytic function is applied to the surface of the siding material. The main resin component of the weather-resistant transparent paint is a fluororesin, a siloxane resin, an acrylic silicon resin, a cross-linked acrylic resin, or a resin component obtained by mixing them,
5. The method for coating a siding material according to claim 4, wherein the weather-resistant transparent paint is a transparent paint in which a photocatalytic metal oxide is blended with polytetrafluoroethylene having grafted sulfonic acid groups as a resin binder. The resin component of the translucent paint is an acrylic resin, an acrylic urethane resin, an acrylic silicon resin , a fluororesin emulsion, or a mixture thereof. How to paint siding material.

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