JP2566498Y2 - Architectural base plate - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an architectural base plate on which mortar painted walls, tile walls, etc. of a building can be directly sprayed and coated with a mortar or the like upon construction.

[0002]

2. Description of the Related Art The applicant has previously filed Japanese Utility Model Application No.
No. 95948 (Japanese Utility Model Laid-Open No. 5-24768), a waterproof coating layer is formed on the surface of a substrate, and an inorganic binder and / or an organic binder and an aggregate are formed on the waterproof coating layer.
An application was filed for an architectural base plate having a base layer including small voids.

However, in the prior invention, small voids and aggregates are present below the base layer and near the contact surface with the waterproof coating layer, and the surface is considerably rough.

[0004] For this reason, the underlayer does not include small voids on the surface of the smooth waterproof coating layer formed on the substrate surface in order to achieve close contact between the underlayer and the waterproof coating layer. There was a tendency for the adhesive strength to be somewhat reduced compared to the conventional underlayer.

[0005]

An object of the present invention is to improve the adhesive strength between a building base plate and a decorative mortar.

[0006]

Technical Solution A waterproof coating layer 2 is formed on the surface of a substrate 1, and an adhesive layer made of an inorganic binder, a binding aid, and an aggregate is provided on the waterproof coating layer 2 so that the surface has an uneven shape. In addition, an inorganic binder and / or an organic binder, and a base surface layer 4 containing an aggregate 6 and small voids 5 are formed on the upper surface of the adhesive layer.

[0007]

[Function] The base surface layer 4 is composed of a binder and an aggregate 6 and a small space 5.
, The cosmetic mortar to be applied has a sufficient water absorption capacity for the water content. Therefore, the base surface layer 4 has a high adhesiveness with the decorative mortar.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

FIG. 1 is a sectional view of an architectural 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 a plywood, a fiber plate, a wood chip plate, a cement plate, a gypsum plate, a wool cement plate, a wood chip cement plate, a calcium silicate plate, a pulp cement plate, or an organic plate or an inorganic plate. A plate made of an organic mixed plate or a composite plate is used.

Next, a waterproof coating layer 2 is formed on the surface of the substrate 1 by uniformly applying a synthetic resin, latex, a bituminous substance, or an emulsion thereof using a coating apparatus such as a roll coater or a flow coater.

As the synthetic resin of the waterproof coating layer 2, vinyl acetate resin, vinyl chloride resin, acrylic resin, epoxy resin and the like are used. As latex, acrylonitrile butadiene rubber (NBR) and butadiene acrylic rubber (MB) are used.
R), styrene-butadiene rubber (SBR) and the like, and bituminous substances such as tar and asphalt.

If necessary, an extender such as clay, talc, calcium carbonate or an auxiliary agent such as a dispersant may be added to the waterproof coating layer 2 and mixed.

When the surface of the substrate is a porous plate-like body, the waterproof coating layer 2 has a smooth surface to prevent the permeation of moisture from the surface (improve the waterproof performance) and accompany the moisture absorption expansion due to the permeated moisture. It functions to prevent warping and decay of the substrate itself.

The waterproof coating layer 2 prevents the elution of water or an alkali-soluble component (duck) depending on the material of the substrate 1, and a mixture layer 3 and a lightweight cement layer 4 applied thereon.
It also serves to eliminate curing retardation and inhibition due to flaking.

Further, by smoothing the surface with the waterproof coating layer 2, if the surface is porous, voids (air pockets) in the concave portion of the surface are eliminated, and the generation of air bubbles is prevented. This has the effect of substantially increasing the bonding area between the layer and the substrate 1.

Next, on the waterproof coating layer 2, an adhesive layer 3 made of an inorganic binder, other binding assistants, and aggregates is provided with an uneven surface.

As the inorganic binder, various materials such as ordinary cement, early-strength cement, ultra-high-strength cement, moderate heat cement, alumina cement, blast-furnace cement, fly ash cement, silica cement, and rapidly hardened cement are used.

The binding aid is, for example, vinyl acetate resin, vinyl chloride resin, acrylic resin, epoxy resin or the like as a synthetic resin, and acrylonitrile butadiene rubber (NBR) or butadiene acrylic rubber (M
BR), styrene-butadiene rubber (SBR) and the like, and bituminous substances such as tar and asphalt.

Further, if necessary, an arbitrary aggregate can be appropriately mixed. Examples of the optional aggregate 6 include calcium carbonate, talc, clay, fly ash, incinerated ash, slag, vermiculite, perlite, expanded rock, expanded clay, shirasu balloon or synthetic resin beads such as polyethylene and polystyrene, synthetic resin expanded particles, Crushed particles of synthetic resin foam, wood flour,
Wood fibers and the like can be used irrespective of organic type, inorganic type, foaming property and non-foaming property, and each of them can be used alone or in an appropriate mixture.

The adhesive layer 3 thus composed is
The surface is formed on the waterproof coating 2 provided on the surface of the substrate 1 in such a manner that the surface is made uneven 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 adhesive layer 3
The adhesion between the resin and the synthetic resin, latex, bituminous substance, etc. constituting the waterproof coating layer 2 is strengthened by intermolecular attraction.

At this time, since the adhesive layer 3 does not include the small voids 5, the adhesive layer 3 can be in close contact with the smooth surface formed by the waterproof coating layer 2, thereby further increasing the adhesive strength. .

Next, on the adhesive layer 3, a base surface layer 4 including an inorganic binder and / or an organic binder and an aggregate and including small voids is formed.

As the inorganic binder, various materials such as ordinary cement, early-strength cement, ultra-high-strength cement, moderate heat cement, alumina cement, blast furnace cement, fly ash cement, silica cement, and rapidly hardened cement are used.

The organic binder is, for example, a vinyl acetate resin, a vinyl chloride resin, an acrylic resin, an epoxy resin, or the like as a synthetic resin. Rubber (SBR) and the like, and bituminous substances include tar and asphalt.

If the same material as that used for the adhesive layer 2 is used for the base surface layer 4 as described above, the organic binder of the base surface layer 4 and the synthetic resin forming the adhesive layer 3 can be used.
Adhesion is strengthened by intermolecular attraction with latex, bituminous substances, and the like.

The small voids 5 are formed in the base surface layer 4 using a foaming agent, an AE agent, a foaming agent and the like. Examples of the foaming agent include terpene alcohols, cresylic acid, and aliphatic alcohols having 5 to 8 carbon atoms.

Examples of the AE agent include anionic surfactants such as resinates, triethanolamine alkylsulfonates, alkylbenzenesulfonates, and ligninsulfonates, as well as cationic surfactants and nonionic surfactants. Used.

Examples of the foaming agent include metal powders such as aluminum and zinc, and carbide powders. In this way, the cells are closed or connected to each other to form open cells.

As the aggregate 6, calcium carbonate, talc, clay, fly ash, incinerated ash, slag, vermiculite,
Perlite, expanded rock, expanded clay, shirasu balloon or synthetic resin beads such as polyethylene, polystyrene,
Synthetic resin foam, crushed granules of synthetic resin foam, wood flour, wood fiber, etc., can be used irrespective of the type of organic, inorganic, foamable and non-foamable. Can be used.

The underlying surface layer 4 thus obtained has small voids 5
And the aggregate 6 are mixed. The mixing of the aggregate, particularly the mixing of the foaming aggregate, itself shows the entraining action of air during the kneading of the formation of the base surface layer 4 and promotes the action of various foaming agents, AE agents, and foaming agents. Induces the formation of small voids.

When small voids are formed by the action of various foaming agents, AE agents, and foaming agents, a large amount of water is required. The slurry has excessive fluidity, resulting in poor shapeability and workability.

However, when the aggregate, particularly the aggregate having water absorbability, is mixed in, excess water is absorbed. That is, the base surface layer 4 can be formed by a slurry having a large amount of small voids 5 and having an appropriate workability.

By forming the lightweight underlayer 4 on the surface of the adhesive layer 3 in this manner, the entire underlayer can be made lightweight and thick. Above all, if the thickness of the underlayer is used in the range of 7 mm to 15 mm, the coating thickness of the finishing mortar can be reduced, and a single mortar coating, which has never been seen before in the field This is preferable in that it can save labor and at the same time can sufficiently obtain a fire spread prevention structure or a fire prevention structure.

If the thickness of the underlayer is less than 7 mm, the applied amount of the finishing mortar on site becomes large. Also 15m
m thicker, the finish mortar may be a thin coat,
In terms of labor saving such that it becomes difficult for one person to work in terms of weight, the construction is lacking.

However, the holding power to the finishing mortar itself does not deteriorate, and does not cause any problem in the function as the base material.

The base surface layer 4 thus formed is
The small voids 5 are present so as to surround and surround the aggregate 6.

That is, the aggregate 6 is provided with an air cushion 7 formed by various small gaps 5 around the aggregate, and even when a non-foamed aggregate is used as the aggregate, the foamed bone is present in the layer. Not only can elasticity be imparted as in the case of the aggregate, but also greater mechanical strength can be obtained at the same time than when the expandable aggregate is used alone.

In the compression step, the aggregate used for forming the surface irregularities is pressed into the air cushion 7 of each aggregate, so that the accuracy of the thickness dimension can be improved regardless of the resilience of the aggregate. It is possible to give a clear and uneven pattern that is kept.

Even when the aggregate expands and deforms due to factors such as heat and ultraviolet rays, the air cushion 7 around the aggregate is attached to the deformation of the aggregate and absorbs the deformation. The overall dimensional accuracy of the base plate is not impaired. As described above, since there is a gap in the same layer as the aggregate and the gap is present as the air cushion 7 surrounding the aggregate, it is possible to use an extremely wide variety of aggregates which does not limit the aggregate to be used.

The underlayer surface layer 4 having various excellent properties obtained in this way has small gaps in the surface in contact with the adhesive layer 3 and the surface is roughened.

Here, heretofore, this was conventionally applied over a waterproof layer having a smooth surface formed on the surface of the substrate.
Although the adhesive area was reduced and the adhesion was inferior to that of a woven fabric, in the configuration of the present invention, the base surface layer 4 having the contact surface exhibiting this roughening had an uneven shape on the surface and furthermore had a rough surface. The surface of the substrate 1 is coated on the surface waterproof coating layer 2 by an adhesive layer 3 having a large number of irregularities made of cement, aggregate or the like on the surface.

As a result, even if a cross section of a small gap appears on the surface of the base surface layer 4 in contact with the adhesive layer 3 and the surface is roughened, the aforementioned large number of surface projections of the adhesive layer 3 will It becomes a shape penetrating into the concave portion of the small gap cross section on the contact surface with the adhesive layer 3 on the surface layer, and has a very large contact area.

Further, when the adhesive layer 3 and the base surface layer 4 are both formed using the same binder, the performance is further improved.

From the above two points, the base surface layer 4 can firmly adhere to the adhesive layer.

Further, as described above, the adhesive layer 3 has an excellent adhesion to the waterproof coating layer 2 formed on the surface of the substrate 1.

Therefore, from the above, the base surface layer 4 can be reliably integrated with the substrate 1 by the adhesive layer 3,
The strength of the plate material and the peel strength of the base surface layer can be improved, and the prevention of cracks in the decorative mortar applied to the surface can be more reliable.

The ground surface layer of the obtained building base plate is forcibly dried immediately after formation, and the moisture contained in the ground layer is rapidly scattered and removed.

At this time, the hardening reaction of the cement in the base surface layer 4 is temporarily interrupted and is not completely completed. In this state, the water-impermeable coating 8 is formed on the base surface layer 4.
Are releasably laminated.

As described above, the base surface layer 4 is protected from the humidity of the surrounding atmosphere and moisture such as rainwater, and can maintain the interrupted state of the curing reaction.

As means for forming the water-impermeable coating 8 so as to be releasable, a water-impermeable film may be attached to the surface of the underlying surface 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 on the surface layer surface and drying.

In the former, the re-peelable pressure-sensitive adhesive does not require a solvent, heat, or the like, and can be adhered to another surface even at a very low pressure such as a finger pressure. Adhesive that can be easily peeled off without leaving traces on the surface, such as rubber-based pressure-sensitive adhesives, acrylic-based pressure-sensitive adhesives, silicone-based pressure-sensitive adhesives, polyvinyl ether-based pressure-sensitive adhesives, etc. Can be exemplified.

The water-impermeable film used at this time is a polyethylene film, a polypropylene film,
Polyvinyl chloride film is fried.

The water-impermeable film adhered to the surface of the base layer via the re-peelable pressure-sensitive adhesive is applied to the building base plate by carrying the building base plate to the building site, nailing the building frame, and then applying mortar coating. It is preferable that the adhesive and the adhesive are peeled off from the surface of the base layer immediately before the application.

In the latter, a peeling paint is a paint that can be dried by an appropriate method after painting and that can be easily peeled off after continuous application of the intended purpose. Solution type such as vinyl-vinyl acetate copolymer, sol type, vinyl butyral resin,
Various types such as an aqueous dispersion type using an emulsion of a vinyl acetate resin, a vinyl chloride resin, an acrylic resin, or the like can be used.

The peeling paint applied on the surface of the base layer 4 is dried by an appropriate means to form a water-impermeable coating on the surface of the base layer 4.

Then, the non-permeable coating layer 2 is applied to the surface of the base layer 4 until the building base plate is carried to the building site, nailed to the building frame, and immediately before mortar coating is performed. Immediately before mortar application
It is preferable that it is peeled off from the surface.

The architectural base plate on which the unhardened base layer is formed is transported to each building site, where the impermeable coating is peeled off, and a mortar containing a large amount of water is applied. Become.

Then, the moisture contained in the mortar is supplied to the underlayer where the curing is interrupted, and the curing reaction is started again.

For this reason, the base surface layer 4 made of the cement mixture and the cement of the mortar each form a polymerization and hydration product in a state of being in contact with each other, so that better adhesion can be obtained.

At the same time, the water-impermeable coating is formed when an organic foam is mixed in the surface layer of the building base plate.

A) collapse of stability due to external moisture or heat, b) loss of durability due to deterioration by ultraviolet rays,
The organic foam can be protected from external factors that cause such problems.

Further, the water-impermeable coating is formed on the surface of the base layer of the base plate for building, so that the surface of the base layer is affected by external physical factors at all times during curing, transportation and construction. It also has the effect of protecting against damage and loss.

For this reason, the surface of the underlayer surface of the architectural underlayer can maintain the desired coated surface of the desired mortar.

When the architectural base plate is nailed from the water-impermeable coating formed on the surface of the base layer, the gap formed at the nail contact portion between the nail and the base layer at the nailed portion is completely removed. In addition, it is possible to prevent the penetration of moisture from the nailed portion as in the conventional case, prevent the corrosion of the nail, and enhance the decay resistance of the building frame.

[0067]

[Function and effect] The adhesive layer 3 has a good contact interface with the underlying surface layer having the small voids and the aggregate having the same physical surface shape and chemical composition. Since the base surface layer is adhered on the common waterproof coating layer 2, even if the base surface layer has a cross section of the small gap 5 or a rough surface in which the aggregate 6 is exposed on the contact surface with the lower layer, the base surface layer is surely attached to the substrate 1 By being closely adhered and fixed, the strength of the plate material and the peel strength of the base surface layer can be improved, and the prevention of cracks in the decorative mortar applied to the surface can be further ensured.

Since the underlying surface layer 4 has a large amount of small voids 5 therein, it is possible not only to reduce the weight of the underlying plate, but also to have a sufficient water absorption capacity with respect to the moisture contained in the mortar applied to the surface thereof. Since it is possible to have the mortar, it is possible to firmly apply the mortar on the surface.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a base plate of the present invention when a water-impermeable coating 8 is peeled off.

FIG. 2 is a sectional view of the base plate of the present invention when the water-impermeable coating 8 is peeled off;

FIG. 3 is an operation explanatory view showing a state in which the small voids 5 adhere to the aggregate 6,

4A is an operation explanatory view showing an initial state in which the small gaps 5 adhere to the aggregate 6, FIG. 4B is an operation explanatory view after the small gaps 5 are deformed,

Claims (2)

(57) [Scope of request for utility model registration] 1. A waterproof coating layer 2 is formed on the surface of a substrate 1, and an inorganic binder, other binding aids, and an aggregate 6 are formed on the waterproof coating layer 2.
The adhesive layer 3 is provided with an uneven surface, and an inorganic binder and / or an organic binder, an aggregate 6 and a small space 5 are included on the upper surface of the adhesive layer 3. An architectural base plate having a surface layer formed thereon. 2. The architectural base plate according to claim 1, wherein a water-impermeable coating is formed on the surface of the base layer so as to be easily peelable.