JPS626186Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a flexible building base material in which an inorganic board containing foam particles is integrated with a flexible porous sheet on one side and a flexible waterproof sheet on the other side. It is.

Conventionally, the general method for constructing mortar-painted walls in buildings is to first attach a lath base plate, then attach waterproof paper such as asphalt roofing paper on top of that, and then attach a wire mesh such as metal lath on top of that. This method was followed by applying mortar coating, but this method required labor and time as it was a wet field work, and was not fully satisfactory in terms of waterproofness and cracking on the mortar coated surface. It was not possible to assume that it was. In addition, in recent years, two-by-four construction methods and other panel construction methods have been adopted, but even in these cases, there remains the problem that wet site work must be carried out if mortar coating is required. has been done.

This invention was completed as a result of research to solve the above problems, and its purpose is to improve construction efficiency by converting wet site work, which required manpower and time, into a semi-dry method. The purpose of the present invention is to provide a base material for construction that is excellent in terms of labor saving and other aspects.

Hereinafter, the present invention will be explained in detail with reference to drawings of embodiments.

In Figure 1, a flexible porous sheet 2 such as a wire mesh is provided on the surface of an inorganic layer 1 containing an inorganic binder 1a and foamed particles 1b, and a flexible waterproof sheet 3 is integrated on the back side. Figure 2 shows a case where a flexible porous sheet 2 such as a wire mesh is embedded in the surface of the inorganic layer 1 and a flexible waterproof sheet 3 is integrated on the back side. FIG. 4 is an enlarged explanatory diagram of each cross section.

The inorganic layer 1 is a lightweight and plastically deformable inorganic material made of foamed particles 1b as an organic or inorganic aggregate such as polystyrene, polyurethane, perlite, or vermiculite, and an inorganic binder 1a such as Portland cement or gypsum. It is composed of layer 1.

The flexible porous sheet 2 attached to or embedded in the surface of the inorganic layer 1 includes metallic flexible porous sheets such as metal lath and wire lath, as well as cheesecloth or nonwoven fabric made of synthetic fibers, natural fibers, inorganic fibers, etc. is used. When attaching or embedding such flexible porous sheet 2 on the surface of the inorganic layer, it may be chemically attached using an adhesive, or it may be partially embedded before the inorganic layer hardens. , or may be physically attached using an auxiliary part such as a staple.

The flexible waterproof sheet 3 disposed on the back side of the inorganic layer is made of a thin and flexible material such as impregnated paper or impregnated nonwoven fabric, vinyl chloride, or rubber treated with a waterproofing agent or water repellent such as asphalt or asphalt felt. A sheet-like material having properties is adhered to the back surface of the inorganic layer by adhesive or self-fusion. In addition, if a material with a high elongation rate is selected for the flexible waterproof sheet 3, the degree of freedom in construction on curved surfaces will be greater, and even when construction is performed on areas such as inside corners, the inorganic layer can be bent without cutting. It has the advantage of being able to

Furthermore, in order to reinforce the joints between adjacent base materials, a flexible porous sheet or flexible waterproof sheet may be attached slightly protruding from both ends of the inorganic layer, or a flexible porous sheet or flexible waterproof sheet with a wide area may be attached. It is also possible to attach a flexible waterproof sheet and use it by inserting protruding sheet-like objects or flexible waterproof sheets that are adjacent and facing each other into the joint portions during construction.

Because the present invention has the above-mentioned structure, it is not only labor-saving as a construction base material compared to the conventional construction material, but also has an inorganic layer containing foamed particles and a flexible material attached to the surface. The flexible porous sheet provides good adhesion with the top coat mortar, and the effect of the flexible porous sheet attached to or embedded in the inorganic layer surface greatly reduces the occurrence of cracks after finishing the top coat mortar. Furthermore, by fixing the flexible porous sheet to the structure with staples or nails, a strong structure can be constructed.

From an on-site construction perspective, the base material as a whole is flexible, so it can be installed on curved surfaces, and it is lightweight, making it easy to cut, nail, etc. It has many advantages.

[Brief explanation of the drawing]

The drawing is a sectional view of an embodiment of the construction base material according to the present invention, and FIG. 1 shows a structure in which a flexible porous sheet is attached to the surface of the inorganic layer, and a flexible waterproof sheet is arranged on the back surface. Figure 2 shows an example in which a flexible porous sheet is embedded in the surface of the inorganic layer and a flexible waterproof sheet is placed on the back side, and Figure 3 shows a flexible porous sheet attached to the surface of the inorganic layer. This is an example in which the porous sheet is fixed with staples. In the figure, 1... inorganic layer, 1a... inorganic binder,
1b...Expanded particles, 2...Flexible porous sheet, 3
...Flexible tarpaulin sheet, 4...Staples.

Claims (1)

[Claims for Utility Model Registration] 1. A flexible porous sheet is attached to or embedded on the front side of the inorganic layer containing expanded particles, and a flexible waterproof sheet is disposed on the back side. Architectural base material. 2. The architectural base material according to claim 1, wherein the expanded particles are organic particles. 3. The architectural base material according to claim 1, wherein the expanded particles are inorganic particles. 4 Utility model registration claims 1, 2, or 3 in which the flexible porous sheet is selected from metal, synthetic fiber, natural fiber, and inorganic fiber.
Architectural base material according to any one of the following items.