JPS60430Y2 - Architectural base material - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a construction base material that has a useful joint treatment function when applying mortar to the exterior walls of buildings.

Mortar construction is often used as a construction method for constructing the exterior walls of buildings, but the quality of the finish is greatly influenced by the characteristics of the underlying surface that is formed before construction.

For this reason, the conventional method of using lath wire mesh requires a lot of manual work, is complicated, and requires a lot of labor. Therefore, a wooden substrate such as plywood or hardboard is used, and a waterproof adhesive layer is applied on the wooden substrate. Mortar base materials are often used, which are coated with a cement layer to which polymer cement or various lightweight aggregates are added.

However, when applying this type of mortar base material, it is necessary to seal the joints between the mortar base materials, so it is necessary to fill the liquid sealant with a trowel or sealing gun, which requires a lot of labor and liquid sealant. It takes a long curing period, which increases the construction period.

Furthermore, there is a difference in water absorption and adhesion between the part filled with the liquid sealant and the mortar base material part, and there is also the problem that the finished state after applying the top coat of mortar differs and spoils the aesthetic appearance.

The object of the present invention is to eliminate such conventional drawbacks, provide a base material for construction that has a sealing function for joint parts, and is easy to construct.

The structure of the present invention, which is distantly related to this object, has an inorganic layer mixed with lightweight aggregate on a wooden substrate via a waterproof layer or a waterproof adhesive layer, and one end of a joint sealing sheet is attached to the side end surface of the wooden substrate. It is characterized by being made by gluing the parts.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

As shown in FIG. 1 showing its appearance, the architectural base material 1 has a base plate 5 composed of a wooden substrate 2 serving as the base surface, a waterproof layer or waterproof adhesive layer 3, and an inorganic layer 4, and a base plate 5 on its side end surface. It is composed of a joint sealing sheet 6 to which one end is adhered.

As shown in FIG. 2 showing its cross-sectional structure, the base plate 5 is made of a waterproof layer formed by coating and solidifying synthetic rubber or synthetic resin thread latex on a wooden substrate 2 such as plywood or hardboard, or A waterproof adhesive layer 3 formed by applying and solidifying two or more times is provided, and an inorganic layer 4 in which lightweight aggregate 4a is mixed on the waterproof layer or waterproof adhesive layer 3.
is provided.

The waterproof layer or waterproof adhesive layer 3 constituting the base plate 5 may be made of synthetic rubber such as styrene-butadiene rubber, acrylnitrile-styrene-butadiene rubber, acrylic styrene or methyl methacrylate-butadiene rubber, or synthetic resin thread latex. can.

Cement is mainly used as the inorganic layer 4, but gypsum can be used instead of cement when used as an interior base material such as a tile base or a ceiling base.

The lightweight aggregate 4a to be mixed into the inorganic layer 4 may be either organic or inorganic, such as polystyrene, synthetic resin foam such as styrene-maleic anhydride copolymer, cork, perlite, vermiculite, volcanic sand, etc. and expansive rocks are used.

The specific gravity of the inorganic layer 4 containing these lightweight aggregates 4a is preferably 0.3 to 1, and if the inorganic layer 4 is thin, a small amount of synthetic rubber-based or synthetic leather base resin-based latex may be added to adjust the particle size. The inorganic layer 4 may include a small lightweight aggregate 4a.

When cement is used as the inorganic layer 4, the amount of lightweight aggregate 4a to be mixed is 2 to 10 parts by weight per 10 parts of cement. Can be formed.

As shown in FIG. 2, one end of the joint sealing sheet 6 on which a waterproof sheet 6a and a porous sheet 6b as shown in FIG. The other end is open above the base plate 5.

Waterproof sheet 6a constituting this joint sealing sheet 6
As the porous sheet 6b, a bituminous sheet, a synthetic resin sheet, a metal sheet, etc. can be used, and as the porous sheet 6b, a nonwoven fabric made of glass fiber, synthetic fiber, etc. in the form of a sheet, cheesecloth, etc. can be used.

Alternatively, cuts or holes may be provided on the open end side of the waterproof sheet 6a.

When attaching the waterproof sheet 6a and the porous sheet 6b, considering that the open end of the joint sealing sheet 6 is covered by the peripheral edge of the adjacent base plate 5, only the porous sheet 6 is attached. The waterproof sheet 6a having a width B approximately equal to the thickness of the base plate 5 is used because being located on the surface of the base plate 5 has excellent adhesion with mortar.

Furthermore, the adhesion to the base board 5 may be achieved by adhering the waterproof sheet 6a side of the joint sealing sheet 6 to the end surface of the wooden substrate 2 containing at least the waterproof layer or the waterproof adhesive layer 3, as shown in FIG. If the adhesive is bonded over the entire end surface of the base plate 5, the strength can be further improved.

In addition, a fourth example of another embodiment of the construction base material of the present invention is also provided.
As shown in the figure, one end portion of the joint sealing sheet 6 may be adhered not only to the side end surface 5a of the base plate 5 but also to the lower surface 5b.

The other configurations are the same as those of the above embodiment.

By bonding also to the lower surface 5b in this way, it is possible to bond more firmly than in the above embodiment.

The width of the waterproof sheet 6a of the joint sealing sheet 6 used in this case is preferably wide considering the length of adhesion to the lower surface 5b.

As shown in FIG. 5, the architectural base material 1 thus formed is fixed to studs or pillars 7 with nails 8, etc. prior to mortar construction. This is overlapped with a sheet 6 and then bent along the surface of one of the construction base materials 1 and nailed with a nail 8 from above the overlapping part of the joint sealing sheet 6.

The joint parts of the architectural base material 1 that have been nailed in this way are
Since it is sealed with the joint sealing sheet 6 and only the porous sheet 6b is exposed on the surface of the architectural base material 1, it has good adhesion with mortar and water absorption, and has almost the same characteristics as the inorganic layer 4 such as cement. It can be done.

In addition, even if a slight gap is formed at the joint part when the construction base material 1 is nailed down, as shown in FIG. Since it is applied, there are no problems with water absorption or adhesion.

As explained above in detail with the examples, according to the present invention, the work of forming the mortar base surface is easy, and the work of sealing the joints is performed at the same time, which shortens the construction period and reduces labor. It is measured.

In addition, there is no need to fill the joints with a liquid sealant or the like, and there are no areas with different adhesion or water absorption to the mortar, resulting in a good finish and no loss of aesthetics.

[Brief explanation of the drawing]

The drawings show the construction base material of the present invention, and Fig. 1 is an external perspective view, Fig. 2 is a sectional view, Fig. 3 is a sectional view of a joint sealing sheet, and Fig. 4 is a sectional view of another embodiment. Figures 5 and 6
The figure is an explanatory cross-sectional view of the construction state. In the drawing, 1 is a construction base material, 2 is a wooden substrate, 3 is a waterproof layer or waterproof adhesive layer, 4 is an inorganic layer, 4a is a lightweight aggregate,
5 is a base plate, 5a is a side end surface, 5b is a lower surface, 6 is a joint sealing sheet, 6a is a waterproof sheet, 6b is a porous sheet, 7 is a stud or pillar, and 8 is a nail.

Claims (1)

[Scope of utility model registration request] It is characterized by having an inorganic layer mixed with lightweight aggregate on a wooden substrate via a waterproof layer or a waterproof adhesive layer, and one end of a joint sealing sheet is adhered to the side end surface of the wooden substrate. Architectural base material.