JPS5845399Y2 - Architectural base material - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a base material for construction, and particularly to a base material for construction on which decorative cement mortar, plaster, etc. are directly applied.

Recently, as this type of construction base material, one in which a foam is adhered to the surface of plywood has been proposed.

However, the base material forms a decorative wall surface by pushing a decorative coating material such as cement mortar or stain into the pores of the foam surface using a trowel, and fixing it in an anchor-like manner. The adhesion between the base material and the decorative coating material was very weak due to the physical adhesion caused by this.

In addition, the size and depth of the pores on the surface of the foam vary, making it difficult to completely fill the pores on the surface of the foam by pushing a highly viscous decorative coating material with a trowel. In some cases, such as those with small entrances, air pockets may form within the pores, and even though there are pores on the surface of the foam, the adhesion area is substantially small, resulting in a decrease in adhesion. was a major cause of this.

The present invention has solved the above-mentioned conventional problems, and its structure consists of a closed cell structure with an adhesive 2 interposed on the front and back surfaces of an inorganic or organic substrate 1, and a cell hole 3 on the surface. A base material for construction is provided with a layer of sealer 5 by applying latex to at least one surface of the foam plates 4, 4' as required. It is something.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The following will describe embodiments of the present invention shown in the accompanying drawings.

■ As the substrate 1, plywood, fiberboard, wood chip board, gypsum board,
It is a plate-like body made of an inorganic material such as a cement board, an organic material, or a mixture of inorganic and organic materials.

The substrate 1 is subjected to merging processing on two or four sides of its end surface, as necessary, to improve the adhesion of the end surfaces and prevent unevenness of the surface when constructing a base material for construction.

■ Foam plates 4, 4' having a closed cell structure and having cell holes 3 on the surface are attached to the front and back surfaces of the substrate 1 via an adhesive 2 such as vinyl acetate resin or epoxy resin.
Paste.

The foam plates 4 and 4' are made of synthetic resins such as vinyl chloride resin and its copolymer resin, thermoplastic resins such as polyethylene, polystyrene, and polyurethane, or thermoplastic resins such as phenolic resins, silicone resins, and epoxy resins, as required. Additives are then added and foamed using an arbitrary method.

The foam plates 4, 4' may be any foam having a closed cell structure and are not limited to the resin foams described above.

Further, since it has a sandwich structure in which foam plate-like materials 4 and 4' are adhered to the front and back surfaces, its heat insulating effect is further improved.

The corners of the upper edges of the two or four sides of the foam plate 4 adhered to the surface of the substrate 1 via the adhesive 2 may be attached to the surface of the foam plate 4 as needed. Chamfering may be performed at an angle of (preferably about 45°).

(2) NBR and SBR are applied to the entire surface of the foam plate 4 on at least one side (front side) of the foam plates 4 and 4'.

A sealer layer 5 is provided by applying latex such as MBR.

The sealer layer 5 fills the small pores of the bubble concave holes 3 on the surface of the foam plate 4, and makes the large pores shallow to form a substantially smooth surface, as shown in FIG.

By making the surface smooth, when a decorative coating material such as cement mortar or stain is applied to the surface, the decorative coating material 6 is sufficiently filled into the pores of the surface, and the bubble concave holes 3 are filled with the decorative coating material 6. No air pockets are formed, and when the decorative coating material is applied, the sealer layer 5 swells with alkaline water in the mortar, and the film formed as the sealer layer 5 becomes mixed with the decorative coating material. The adhesive interface between the sealer layer 5 and the mortar layer becomes dense.

Furthermore, the adhesion between the sealer layer 5 and the decorative coating material is further improved due to the intermolecular attraction between the latex contained in the sealer layer 5 and a substance such as mortar of the decorative coating material.

The degree of physical adhesion between the sealer layer 5 and the decorative coating material is ensured by the anchoring effect in which the decorative coating material bites into the large holes left after being filled with the sealer layer 5 on the surface of the foam plate 4.

If the sealer layer 5 is not provided, the small pores of the bubble recesses 3 will become air pockets as shown in Fig. 2 (■), which will inhibit the adhesion between the decorative coating material 6 and the foam plate 4 and cause peeling. Become.

In addition, latex is not only inexpensive, but also has the property of fitting well into the bubble recesses 3 of the foam plate-like material 4.
As shown in Figure (2), the adhesive strength of the decorative coating material 6 to the foam plate-like material 4 is further improved.

In addition, the latex permeated sealer layer 5 is a decorative coating material 6.
It is swollen by the alkaline water contained therein, and the latex of the sealer layer 5 exhibits a strong adhesive force during this swelling.

That is, the latex generates intermolecular attraction between the alkali in the decorative coating material 6 and the substance contained in the foam plate-like material 4, and the decorative coating material 6 and the foam plate-like material 4 are completely adhered to each other. .

■ The foam plate-like material 4' attached to the back surface of the substrate 1 prevents moisture absorption and water absorption from the back surface to the substrate 1, thereby preventing the occurrence of warping, dancing, etc. due to contraction and expansion of the substrate 1 itself.
It can also prevent cracking and peeling of decorative paint materials.

Effects of the present invention: (1) The base material of the present invention ensures adhesion between the decorative coating material 6 and the foam plate-like material 4 for the following reasons.

■ Bubble holes 3 in coated foam plate e14 with one layer of sealer 5
Since the foam is filled leaving only the large pores, the decorative coating material 6 can be anchored and adhered to the foam plate e74 via the sealer layer 5 without any air remaining in the bubble concave holes 3.

The latex selected as the O-sealer layer 5 has a property that it fits well into the bubble recesses 3 on the surface of the foam plate 4.
The small air bubble recesses 3a on the surface of the foam plate 4 are completely closed, and the formation of air pockets is prevented as much as possible.

The sealer layer 5 impregnated with O latex is swollen by the alkaline water in the decorative coating material 6, and at this time the latex completely adheres the decorative coating material 6 and the foam board 4.

(2) Since the foam plate 4' is also attached to the back side, deformation of the substrate 1 due to moisture absorption from the back side can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the base material of the present invention, and FIGS. 2 and 2 are explanatory views of the action of the sealer layer 5. 1...Substrate, 2...Adhesive, 3...
...Bubble concave hole, 4゜4'...Foam plate,
5... one layer of sealer, 6... decorative coating material,
7... Bubbles.

Claims (1)

[Scope of utility model registration request] A foam plate-like material 4 having air bubble holes 3 on the front and back surfaces of an organic or inorganic substrate 1 via an adhesive 2;
4', and further apply and impregnate latex on at least one surface of the foam plates 4, 4' to form a layer 5 of sealer, so that at least the latex fills the small holes of the bubble recesses 3. An architectural base material characterized by: