JP3183734B2 - Joint sealing material and wall coating method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint sealing material and a method for coating a wall using the joint sealing material.

[0002]

2. Description of the Related Art Conventionally, a method of finishing a wall of a building is a so-called wet method in which soil or the like is mixed with water and applied to a wall portion of the building to finish the wall, and a wall panel manufactured by a wall material or a factory. There is a so-called dry method in which a plurality of sheets are arranged and attached to a wall portion to finish the wall. In recent years, the dry method has been widely used because the on-site construction is simple and the construction period is short.

[0003] Many inventions have been made on the wall materials and wall panels used in this dry method.
When a plurality of wall materials or wall panels are arranged and attached to a wall portion, a gap called a joint is generated between the wall material or wall panel and an adjacent wall material or wall panel. If the gap between the wall material or wall panel and the adjacent wall material or wall panel is left as it is, not only the appearance is bad, but also rainwater enters from the gap, and the room gets wet, The soaked rainwater enters the wall and freezes, causing so-called frost damage that widens or breaks the gap.

Therefore, in the conventional dry method, it is difficult to close the joint between the wall material or the wall panel and the adjacent wall material or the wall panel. The way to plug this joint is
Conventionally, there are a method of inserting a rubber-like gasket into the joint and a method of filling the joint with a sealing material and coating from above, but the method of inserting the sealing material into the joint and painting from above is conspicuous. Not preferred.

However, if a sealing material is inserted into the joint between the wall material or the wall panel and an adjacent wall material or the wall panel, and then the coating is performed from above, the wall material or the wall panel may be changed due to a temperature difference between summer and winter. The joint width changes due to expansion and contraction, which causes cracks in the sealing material and coating film that are blocking the joints, which is not only ugly, but also causes the problem that rainwater enters from these cracks and causes frost damage. is there.

As a method for finishing this joint, Japanese Patent Publication No.
As described in JP-A-13702, a method is known in which a pressure-sensitive adhesive tape having a release treatment applied to the back surface and a cold gauze tape are applied, and an elastic paint and a normal paint are applied thereon. In this method, since the release surface is applied to the back surface of the adhesive tape, the space between the back surface of the adhesive tape and the elastic paint does not completely adhere. Therefore, even if the wall material or the wall panel expands and contracts due to the temperature difference between summer and winter, the elastic paint or the cold gauze at the portion where the wall material or the wall panel does not adhere expands and contracts, and a crack or the like does not occur in the coating film on the joint. .

[0007]

However, the above method requires a large number of steps, such as applying an adhesive tape or a cold gauze tape, and coating two layers from above, and the workability is poor and cumbersome. Since the advantages of the dry method, that is, the construction is simple and the construction period is short, are lost, construction companies are strongly demanding that the joints be constructed simply and quickly.

In the above method, four layers are provided on the joint, such as an adhesive tape, a cold gauze tape, an elastic paint, and a normal paint, so that this portion becomes thicker and the back surface of the adhesive tape is subjected to a release treatment. Therefore, there is a problem that the elastic paint provided thereon is repelled and becomes uneven, and the painted surface is uneven and ugly. Therefore, an object of the present invention is to provide a joint sealing material suitable for simply and beautifully finishing a joint between a wall material or a wall panel and an adjacent wall material or a wall panel, and a wall seal using the joint material. It is to provide a painting method.

[0009]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and to achieve the above object.
The joint sealing material of the present invention is one in which an elastic paint layer is provided on the surface of a flexible long base material having elasticity, and an adhesive layer is provided on the back surface. Further, in the method for coating a wall according to the present invention, a plurality of wall materials or wall panels are attached side by side to a wall portion of a building, and the joint between the wall material or wall panel and an adjacent wall material or wall panel is provided with the joint seal. The material is aligned with the joint in the longitudinal direction of the long base material, the width direction is passed from the wall material or wall panel to the next wall material or wall panel, and the adhesive layer on the back surface is brought into contact with the wall material or wall panel. After the application, the paint is applied on the wall material or the wall panel and the joint sealing material.

The elastic flexible long base material used for the joint sealing material of the present invention is formed by molding a flexible and elastic material such as rubber into a long body such as a tape,
It is preferable that a rubber such as natural rubber or synthetic rubber, or a soft synthetic resin such as a soft urethane resin, a soft vinyl chloride resin, or an acrylic resin be molded into a long body such as a tape. In particular, a material obtained by molding a soft urethane resin into a tape shape is preferable. The elastic paint used for the joint sealing material of the present invention is one in which the coating film after coating has elasticity, and a urethane-based paint or an acrylic-based paint is preferable, and in particular,
Acrylic paints are preferred.

A typical method of providing a pressure-sensitive adhesive layer on the back surface of the substrate of the present invention is to apply a pressure-sensitive adhesive dissolved in a solvent to the back surface of the joint sealing material and then dry or apply the pressure-sensitive adhesive directly to the joint sealing material. It is provided on the back surface. As the pressure-sensitive adhesive used at this time, all conventionally known pressure-sensitive adhesives can be used, but an acrylic pressure-sensitive adhesive is preferable because it has good weather resistance and a large adhesive strength.

[0012]

According to the present invention, first, a plurality of wall materials or wall panels are mounted side by side on a wall portion of a building. Next, a joint sealing material according to claim 1, that is, an elastic paint layer is provided on a surface of a flexible long base material having elasticity, at a joint between the wall material or the wall panel and an adjacent wall material or a wall panel. The joint sealing material provided with the pressure-sensitive adhesive layer on the back surface, the longitudinal direction of the long base material along the joint, the width direction is passed from the wall material or wall panel to the adjacent wall material or wall panel, The pressure-sensitive adhesive layer on the back surface is brought into contact with the wall material or the wall panel and attached. Finally, a coating is applied on the plurality of wall materials or wall panels and the joint sealing material.

[0013] Then, a joint sealing material is spread over the joint between the wall material or the wall panel and the adjacent wall material or the wall panel, attached and adhered, and painted thereon. Therefore, even if the wall material or the wall panel expands and contracts due to the temperature difference between summer and winter, and the width of the joint changes, the adhesive layer, the elastic long base material, and the elastic paint change the joint width. And does not affect the paint applied thereon, so that the coated surface does not crack. Further, in this coating method, it is only necessary to apply a joint sealing material to the joint and apply the coating thereon, so that the construction is extremely simple. In addition, since the joint sealing material can be manufactured at the factory, a product of constant quality can be obtained.
If a coating is applied on this, the coating surface becomes beautiful without unevenness.

[0014]

Next, examples of the present invention will be described. 1 and 2 show one embodiment of the present invention. FIG. 1 is a partially cutaway perspective view of the joint sealing material of the present invention, and FIG. 2 uses the joint sealing material shown in FIG. FIG. 3 is a sectional view of a wall painted by the method.

In FIGS. 1 and 2, reference numeral 1 denotes a joint sealing material. The joint sealing material 1 has an acrylic material on the surface of a long base material 3 made of a flexible soft urethane resin sheet (manufactured by Fujikura Kasei Co., Ltd.). An elastic paint layer 2 made of a base elastic paint (manufactured by Fujikura Kasei Co., Ltd.) is provided, and an adhesive layer 4 made of an acrylic adhesive (manufactured by Sekisui Chemical Co., Ltd.) is provided on the back surface.

Reference numeral 5 denotes a wall member made of a wood cement board having a thickness of 12 mm. Reference numeral 6 denotes a vertical member made of wood provided on the wall of the house, and the wall member 5 is attached to the vertical member 6. Reference numeral 7 denotes a painted surface provided on the surfaces of the wall material 5 and the joint sealing material 1. Reference numeral 8 denotes a joint formed between the wall member 5 and an adjacent wall member 5.

Next, a method of coating a wall will be described. A plurality of wall members 5 are arranged and attached to the vertical members 6. Then, joints 8 are formed between the wall member 5 and the adjacent wall member 5. The joint sealing material 1 is put on the joint 8 with the longitudinal direction of the long base material 3 along the joint 8, the width direction is inserted from the wall material 5 to the adjacent wall material 5, and the pressure-sensitive adhesive layer 4 on the back surface is attached to the wall material 5. And touch it. Then, a paint is applied 7 in a stucco form.

As described above, in the present embodiment, simply applying the joint sealing material 1 on the joint 8 and applying the coating 7 on the joint 8 provides a beautiful coating, and does not cause cracks even after a long period of time. . That is, even if the joint width changes due to the temperature difference between summer and winter, the pressure-sensitive adhesive layer 4, the base material 3, and the elastic paint layer 2 absorb the change in joint width and no crack is generated on the painted surface 7. .

[0019]

According to the joint sealing material of the present invention, the joint sealing material is coated with an elastic paint layer on the surface of a flexible long base material having elasticity and an adhesive layer on the back surface. When applied by a method, that is, by attaching the adhesive layer on the back surface to the joint of a wall material or a wall panel and applying a paint thereon, the wall material or the wall panel expands and contracts due to a temperature difference between summer and winter, Even if the joint width changes, the joint width change is absorbed by the adhesive layer of the joint sealing material, the elastic base material, and the elastic paint attached on the joint, and the coating provided on the surface is absorbed. Does not affect the surface. Therefore, no crack is generated on the painted surface.

Further, as described above, the method for coating a wall according to the present invention comprises:
It is simple because the joint sealing material of claim 1 is applied to the joint and coating is performed thereon, and the joint sealing material can be manufactured at a factory, so that a product of constant quality can be obtained. Therefore, when a coating is applied thereon, a beautiful wall surface having no unevenness on the coating surface can be obtained. As described above, the present invention is extremely valuable because it has various effects.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention and is a partially cutaway perspective view of a joint sealing material.

FIG. 2 is a sectional view of a wall coated with the joint sealing material shown in FIG. 1 by the method of coating a wall according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 joint sealing material 2 elastic paint layer 3 long base material 4 adhesive layer 5 wall material 6 vertical material 7 painted surface 8 joint

Claims (2)

(57) [Claims] 1. A joint sealing material characterized in that an elastic paint layer is provided on the surface of a flexible long base material having elasticity, and an adhesive layer is provided on the back surface. 2. The joint sealing material according to claim 1, wherein a plurality of wall materials or wall panels are mounted side by side on a wall portion of the building, and a joint between the wall material or wall panel and an adjacent wall material or wall panel. , The longitudinal direction of the long base material was aligned with the joint, the width direction was inserted from the wall material or wall panel to an adjacent wall material or wall panel, and the adhesive layer on the back surface was brought into contact with the wall material or wall panel and stuck. A method of painting a wall, characterized by subsequently painting a wall material or a wall panel and a joint sealing material.