JPH0522741U - Base plate for construction - Google Patents

Abstract

(57) [Summary] [Structure] A waterproof coating layer 2 is formed on the surface of a substrate 1, and an adhesive layer 3 made of an inorganic binding material 6 is provided on the waterproof coating layer 2 as unevenness r3. And a light weight mixture layer 4 comprising an inorganic binder and / or an organic binder 6 and a lightweight aggregate 5 formed on the surface thereof with an uneven surface r4. [Effect] (a) Even if the lower surface of the lightweight mixture layer 4 is roughened by the lightweight aggregate 5 included in the layer, it can be firmly adhered to the substrate 1 via the adhesive layer 3. (B) Light weight aggregate 5 in the water retaining state in the light weight mixture layer 4
Does not mix into the waterproof coating layer 2, and the function of the waterproof coating layer 2 is not impaired. (C) Since the lightweight aggregate 5 can have a water-retaining state in the lightweight mixture layer 4 after applying the makeup mortar, the lightweight mixture layer 4
It is possible to keep the inside of the underlayer 7 composed of the adhesive layer 3 and the wet state gradually, to make the hardening of the binder, for example, cement, permanent for a long period of time, to develop high strength, and to be an excellent structural material. can do.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a building base plate on which a mortar coating material can be directly applied when constructing a mortar coating wall or tile wall of a building.

[0002]

[Prior art and its problems]

 Already as a mortar base material, a waterproof consisting of either a synthetic resin emulsion, synthetic rubber latex bituminous emulsion, a mixture of butyl rubber and bituminous emulsion, or a mixed emulsion of polypropylene and bituminous on a wood-based plate-shaped substrate. A construction base material in which a layer and a mixture layer composed of an inorganic binder and foamed resin particles are arranged "(Japanese Patent Laid-Open No. 55-30049).

This proposal is intended to increase the absolute water absorption capacity of the mixture layer by mixing a foam aggregate into the mixture layer, thereby enabling thick coating of mortar.

However, this technique still has the following problems.

A, the foam aggregate in the mixture layer will be manifested at the contact interface of the mixture layer with the waterproof layer when it is formed on the waterproof layer formed on the substrate. Since it will be in a state, strong adhesion cannot be achieved on the waterproof layer, the movement of the base material causes the mixture layer to peel off, and it is not possible to support the weight of the mortar applied after mortar construction. It is dangerous because it may come off.

B, The foamed aggregate having water retention property enters the waterproof layer in a water retention state, and deteriorates the waterproof function of the waterproof layer.

[0007]

[Technical means of the present invention]

 A waterproof coating layer 2 is formed on the surface of a substrate 1, and an adhesive layer 3 made of an inorganic binding material 6 is provided on the waterproof coating layer 2 as unevenness r3, and further, an inorganic material layer 3 is formed on the surface. A base material for construction in which a lightweight mixture layer 4 composed of a binder and / or an organic binder 6 and a lightweight aggregate 5 is formed to have an uneven surface r4.

[0008]

[Action]

 Even if the lower surface of the light-weight mixture layer 4 is roughened by the lightweight aggregate 5, the roughened lower surface of the light-weight mixture layer 4 is well adapted to the uneven surface r3 of the adhesive layer 3, and both are sufficiently adhered. it can. Therefore, even if a mortar finish is applied to the lightweight mixture layer 4, the lightweight mixture layer 4 does not peel off.

[0009]

【Example】

 FIG. 1 is a sectional view of a building base plate according to the present invention. A waterproof coating layer 2 is formed on the surface of the substrate 1. The substrate 1 is an inorganic plate such as plywood, fiber board, wood shaving board, cement board, gypsum board, wood wool cement board, wood piece cement board, calcium silicate board, pulp cement board, or an organic board or an inorganic organic board. A plate-shaped body made of a mixed plate or a composite plate is used.

Next, a synthetic resin, a latex, a bituminous substance, or an emulsion thereof is uniformly applied and dried on the surface of the substrate 1 by a coating device such as a roll coater or flow coater to form the waterproof coating layer 2.

The synthetic resin of the waterproof coating layer 2 is vinyl acetate resin, vinyl chloride resin, acrylic resin, epoxy resin, etc., and the latex is acrylonitrile butadiene rubber (NBR), butadiene acrylo rubber (MBR), styrene butadiene. Rubber (SBR) or the like is used, and tar or asphalt is used as the bituminous substance. If necessary, a filler such as clay, talc, calcium carbonate or an auxiliary agent such as a dispersant may be added to and mixed with the waterproof coating layer 2.

When the substrate surface is a bolus plate-like body, the waterproof coating layer 2 uses the surface as a smooth surface to prevent the permeation of water from the surface (improve the waterproof performance) and is accompanied by the hygroscopic expansion due to the permeated water. It functions to prevent warpage and decay of the board itself.

Further, the waterproof coating layer 2 prevents the elution of water or an alkali-soluble component (drilling) depending on the material of the substrate 1, and cures by the mixture layer 3 and the lightweight cement layer 4 applied thereon. It also serves to eliminate the occurrence of delays or blockages.

Further, by making the surface smooth by the waterproof coating layer 2, when the surface is bolus, voids (air pockets) are eliminated in the recessed portions of the surface, the generation of air bubbles is prevented, and the adhesive material applied on it. The effect is to substantially increase the adhesion area between the layer and the substrate 1.

Next, an adhesive layer 3 mainly composed of an inorganic binder is provided on the waterproof coating layer 2 with the surface having an uneven shape r3.

The adhesive layer 3 is mainly composed of an inorganic binding material, but a binding aid may be added thereto. As the inorganic binder, various kinds such as ordinary cement, early-strength cement, ultra-early-strength cement, moderate heat cement, alumina cement, blast furnace cement, fly ash cement, silica cement, and rapid hardening cement are used. Examples of the binding aid include vinyl acetate resin, vinyl chloride resin, acrylic resin and epoxy resin as synthetic resin, and acrylonitrile butadiene rubber (NBR), butadiene acrylo rubber (MBR), styrene butadiene as latex. Rubber (SBR) and the like are used as tar and asphalt as the bituminous substance. Furthermore, if necessary, any aggregate can be appropriately mixed. As the optional aggregate, calcium carbonate, talc, clay, silica sand, river sand, fly ash, incinerated ash, slag wood powder, wood fiber and the like can be used alone or in an appropriate mixture.

The adhesive layer thus composed is formed on the waterproof coating provided on the surface of the substrate 1 in such a manner that the surface of the adhesive layer is embossed using an embossing roll or the like. As described above, if the same adhesive layer 3 as that used for the waterproof coating layer 2 is used, the molecules of the synthetic resin, the latex, the bituminous substance, etc., which compose the adhesive layer 3 and the waterproof coating layer 2 are used. By the action of the thinning force, the close contact between the two is strengthened.

The surface of the adhesive material layer 3 has the unevenness r3 in order to increase the contact area as much as possible with respect to the uneven rough surface shape of the lightweight aggregate 5 appearing on the lower surface of the lightweight mixture layer described below. Is.

In this way, the adhesive layer 3 is in close contact with the waterproof coating layer 2 formed on the surface of the substrate 1 on the lower surface of the adhesive layer 3, and on the upper surface of the adhesive layer 3, the adhesive layer 3 is adhered. Adhesion can be achieved by stacking the lightweight mixture layer 4 formed on the upper portion of the layer 3 with a rough surface shape of the lower surface and a high contact area. That is, the lightweight mixture layer 4 is firmly adhered to the substrate 1 due to the presence of the adhesive layer 3.

Further, by interposing the adhesive layer 3 between the light weight mixture layer 4 and the substrate 1, the light weight aggregate 5 in the light weight mixture layer 4 which is water-retentive and in a water-retaining state is provided with the waterproof coating layer 2 It does not mix in and does not deteriorate the waterproof effect of the waterproof coating layer 2. For this reason, peeling of the mixture layer in which the lightweight aggregate is mixed and peeling of the cosmetic mortar applied onto the mixture layer as in the conventional case do not occur.

Next, a lightweight mixture layer 4 made of an inorganic binder and / or an organic binder 10 and a lightweight aggregate 5 is formed on the adhesive layer 3 with its surface being uneven. As the inorganic binder, various kinds of cement such as normal cement, early-strength cement, ultra-early-strength cement, moderate heat cement, alumina cement, blast furnace cement, fly ash cement, silica cement, and rapid hardening cement are used.

Examples of the organic binder include vinyl acetate resin, vinyl chloride resin, acrylic resin and epoxy resin as synthetic resins, and acrylonitrile butadiene rubber (NBR), butadiene acrylo rubber (MBR), styrene butane as latex. Diene rubber (SBR) is used, and tar and asphalt are used as bituminous substances.

By using the same material as that used for the adhesive layer 3 for the lightweight mixture layer 4 as described above, the organic binder of the lightweight mixture layer 4 and the composite constituting the waterproof coating layer 2 are formed. Adhesion is strengthened by the action of intermolecular attraction with resins, latex, and bituminous substances.

Examples of the lightweight aggregate 5 include inorganic foam aggregates such as vermiculite, perlite, expansive tile rock, expansive clay, and silas balloon, and crushed particles, crushed pieces, polyethylene, polystyrene, and the like. Organic foam aggregates such as synthetic resin foam granules, crushed granules of synthetic resin foam, and crushed pieces can be used alone or in admixture as appropriate. Further, since the surface of the light weight mixture layer has an uneven shape, the decorative mortar applied onto the light weight mixture layer easily bites and the adhesion between the layers is improved.

Since the layer on which the cosmetic mortar is directly applied is mixed with the foam aggregate as described above, the absolute water absorption capacity of the layer can be increased. Allows thick coating of rutar.

Since the foam aggregate 5 contained in the lightweight mixture layer has water absorption and water retention properties, when the makeup mortar is applied to the lightweight mixture layer, the water content in the makeup mortar is absorbed and retained. However, as the water content dries in the layer structure consisting of the lightweight mixture layer, the adhesive layer, and then the decorative mortar layer, the water retained in the foam aggregate 5 gradually dissipates, and the layer is formed for a long time. Since the inside can be kept in a wet state, the hydration reaction of cement can be sustained for a long time, the strength of the base plate itself can be increased, and excellent strength as a structural material can be expressed.

The foundation layer 7 comprising the lightweight aggregate layer and the adhesive layer of the obtained construction foundation plate is forcibly dried immediately after formation, and the moisture contained in the foundation layer is rapidly scattered and removed.

At this time, the hardening reaction of the cement in the underlayer is once interrupted and is not completely completed. In this state as shown in FIG. 2, the water impermeable coating 8 is releasably laminated on the lightweight mixture layer 4. By doing so, the underlayer 7 is protected from the humidity of the surrounding atmosphere and moisture such as rainwater, and the suspended state of the curing reaction can be maintained.

As a means for forming the water-impermeable coating 8 in a peelable manner, a water-impermeable film may be adhered to the surface of the lightweight mixture layer via a removable pressure-sensitive adhesive to form a water-impermeable coating. A water-impermeable coating may be formed by applying a water-impermeable stripping paint to the surface of the lightweight mixture layer and drying.

In the former case, the removable pressure-sensitive adhesive does not require a solvent, heat, etc., and can be adhered to other surfaces even at a very low pressure such as finger pressure. An adhesive that can be easily peeled off without leaving traces on the surface. Specifically, rubber pressure sensitive adhesive, acrylic pressure sensitive adhesive, silicone pressure sensitive adhesive, polyvinyl ether pressure sensitive adhesive. Etc. can be illustrated.

As the water-impermeable film used at this time, a polyethylene film, a polypropylene film, a polyvinyl chloride film, or the like is fried.

The water-impermeable film adhered to the surface of the light-weight mixture layer via this re-peelable pressure-sensitive adhesive was transported to the construction site by the building base plate and nailed to the building frame. Immediately before the subsequent mortar coating is performed, it is preferable that both the adhesive and the adhesive are peeled off from the surface of the lightweight mixture layer.

In the latter case, the stripping paint means a coating that can be easily stripped off in a continuous film after being dried by an appropriate method after coating to achieve the intended purpose. Various types such as solution type such as vinyl-vinyl acetate copolymer, sol type, water-dispersion type using emulsion of vinyl butyral resin, vinyl acetate resin, vinyl chloride resin, acrylic resin, etc. Can be used.

These stripping paints applied to the surface of the lightweight mixture layer are dried by an appropriate means to form a water-impermeable coating on the surface of the lightweight mixture layer. This impermeable coating is then applied to the surface of the lightweight mixture layer until the building base plate is transported to the building site, nailed to the building frame, and immediately before the mortar coating, and the mortar coating is applied. It is preferable to peel off from the surface of the lightweight mixture layer immediately before wearing.

Then, the building base plate on which the base layer which has not been hardened in this way is formed is carried to each construction site, the water-impermeable coating is peeled off, and mortar containing a large amount of water is applied. It will be. As a result, the water contained in the mortar is supplied to the underlayer where the curing is suspended, and the curing reaction is restarted.

Therefore, the lightweight mixture layer 4 made of the cement mixture and the mortar cement each form a polymerized product and a hydrated product in a state where they are in contact with each other, so that better adhesion can be obtained.

At the same time, this water-impermeable coating occurs when an organic foam is mixed in the lightweight mixture layer for construction base plate. It is possible to protect the organic foam from external factors that cause problems such as a) stability deterioration due to moisture and heat from the outside, b) loss of durability due to deterioration due to ultraviolet rays, and the like.

Further, this water-impermeable coating is formed on the surface of the lightweight mixture layer 4 of the building base plate, so that the surface of the base layer can be physically and externally treated at any time during curing, transportation and construction. It also has the effect of protecting against damage and loss due to factors. For this reason, the surface of the lightweight mixture layer 4 of the building base plate can maintain a desired mortar stable coating surface.

When the construction base plate is nailed from above the water-impermeable coating 8 formed on the surface of the lightweight mixture layer 4, it is applied to the contact portion between the nail and the base layer 7 in the nail driving portion. The resulting gap can be completely sealed, preventing moisture from penetrating from the conventional nailing part, preventing nail corrosion, and enhancing the sturdiness of the building frame.

[0040]

[Operation effect]

 The present invention has the following effects because the lightweight mixture layer 4 is laminated and adhered to the substrate 1 through the adhesive layer 3.

(A) Even if the lower surface of the lightweight mixture layer 4 is roughened by the lightweight aggregate 5 contained in the layer, it can be firmly adhered to the substrate 1 via the adhesive layer 3.

(B) The lightweight aggregate 5 in the water-retaining state in the lightweight mixture layer 4 does not mix into the waterproof coating layer 2 and the function of the waterproof coating layer 2 is not impaired.

(C) Since the lightweight aggregate 5 can have a water-retaining state in the lightweight mixture layer 4 after applying the cosmetic mortar, the underlayer 7 composed of the lightweight mixture layer 4 and the adhesive layer 3 is kept wet. Thus, it is possible to gradually harden the binder, for example, cement, for a long period of time, to develop high strength, and to make it an excellent structural material.

[Brief description of drawings]

1 is a cross-sectional view of a base plate of the present invention,

FIG. 2 is a sectional view when a water-impermeable coating is formed,

[Explanation of symbols]

1: Substrate, 2: Waterproof film, 3: Adhesive layer, 4: Light weight mixture layer, 5: Light weight aggregate, 6: Inorganic or organic binder, 7: Light weight cement layer 4, Underlayer consisting of mixture layer 3, 8: Water-impermeable coating, r3: unevenness, r4: unevenness.

Claims (2)

[Scope of utility model registration request] 1. A waterproof coating layer 2 is formed on the surface of a substrate 1,
An adhesive layer 3 made of an inorganic binder 6 on the waterproof coating layer 2.
Are provided on the surface as unevenness r3, and a light-weight mixture layer 4 composed of the inorganic binder and / or organic binder 6 and the lightweight aggregate 5 is formed on the surface with unevenness r4. A base plate for construction, which is characterized by 2. The building base plate according to claim 1, wherein a water-impermeable coating 8 is formed on the surface of the lightweight mixture layer 4 so as to be easily peeled off.