JPS61293575A - Production of substrate plate - Google Patents

Abstract

PURPOSE:To improve the coating operability, adhesion, etc., of mortar, etc., by forming a coated film layer on a substrate, forming retculate and nearly continuous groove screen meshes with a screen while the fluidity is retained and then curing the film. CONSTITUTION:A coated film layer 2 is formed on a substrate 1 and a screen 4 is pressed on the coated film layer 2, for example, by sliding a spatula-shaped squeegee 5 while the fluidity is retained to form reticulate and nearly continuous groove screen meshes 7 on the coated film layer 2 and then the film is cured. Consequently, the screen mesh produces mesh produces a mesh coarsening effect, the operability in coating by a trowel is improved and adhesion is also enhanced when mortar, etc., is coated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for manufacturing a base plate for coating with mortar, paint, etc., or tiling of a building.

[Prior art]

Conventionally, in buildings, especially wooden buildings, exterior walls 1.
If the interior wall is made of mortar or tiled, waterproof paper, metal lath, etc. are fixed on top of the lumber with a stable, and mortar is applied in the order of primer, intermediate, and top coat, and then This is done by applying paint by roller or spray, or by laying tiles. These construction methods have drawbacks such as the unavoidable cranking of the mortar, the lack of durability of the staples and their easy peeling during earthquakes, and the need for many workers and long construction periods for groundwork and mortar application. . In contrast to this general construction method, there is a construction method in which a base plate with an uneven rough surface is attached to a pillar or the like as a base. This base board with an uneven surface is made of special rubber with a filler added to it, a paint material, adhesive, cement, or clay.

A coating material made of a mixture of powders such as calcium carbonate, stone powder, sand, asbestos, etc. is applied to a substrate such as plywood using a roll coater 1 sprayer, and the cross section of the uneven surface is mountain-shaped. be. In recent years, patterns of uneven rough surfaces have been devised with features such as protruding patterns with continuous protrusions or human-shaped protruding patterns. When painted, the continuous convex parts restrict the movement of the mortar, trapping air, and inhibiting the drainage of moisture separated from the mortar, causing blisters and shedding of the mortar, resulting in areas that are not bonded to the base. There are problems such as causing cracks. In addition, in recent years, there has been a shift in the decorative method of tiling, from the stacking method called dango-zuri to the pressure-bonding method using adhesive cement, and the adhesive method. In this case, it is necessary to apply mortar undercoat and smooth out the uneven surface before applying the material, which is undesirable in terms of labor, construction time, and cost. There are also other problems, such as peaks being chipped or cargo collapsing during transportation, and uneven surfaces being unable to be inked during construction.

Another base material is a substrate such as plywood coated with asphalt-based paint, but it has disadvantages such as poor mortar paintability and low material strength! [Means to Solve the Problem] As a result of intensive studies to improve the above-mentioned drawbacks of base materials, the present inventors found that a base plate with screen holes formed on the surface to which mortar or the like is adhered can be used as a base material. The present invention was developed based on the knowledge that the method is superior. That is, the present invention is characterized in that a coating film layer is formed on a substrate, and after forming a mesh-like and substantially continuous groove-like screen in the coating film layer while fluidity is maintained, it is solidified. The present invention relates to a method for manufacturing a base plate.

Next, the present invention will be explained in detail.

The present invention consists of three steps, and the first step is a step of applying a coating material slurry to the substrate to form a coating layer that will be the surface to which mortar, paint, or adhesive will be adhered. The slurry contains synthetic resin, rubber, bituminous emulsion, latex, calcium carbonate, clay, talc, silica,
Powder or hydraulic powder such as fly ash, slag, cement, and sandstone, inorganic lightweight aggregates such as perlite, shirasu balloons, foamed glass balls, vermiculite, calcined pumice, and artificial lightweight aggregates, silica sand, and kansui stone. It is obtained by appropriately mixing inorganic aggregates such as slag crushed stone, and organic aggregates such as foamed plastic particles, rubber powder, and polyethylene powder. The coating film N is formed by spraying the slurry using a roll coater 1 or by any other method, and the coating thickness is preferably 0.3 ran or more.

The coating layer must adhere firmly to mortar for a long period of time after solidification, so synthetic resin emulsion or rubber latex and silicates such as portland cement, silica cement, blast furnace cement, high sulfate cement, and slag cement compositions are used. Particularly preferred are hydraulic compositions comprising hydraulic cement and lightweight aggregate. In addition, in order to facilitate the formation of holes in the coating layer, water-soluble polymers such as polyacrylate, methyl cellulose, and hydroxyethyl cellulose, and inorganic powders such as silicic acid and bentonite are added to the slurry. In addition, fibers, thickeners, antifoaming agents, dispersant 1 colorants, coagulation modifiers, etc. may be added as necessary.

The second step is a step of forming a screen in the coating layer formed in the first step, but in order for the screen to be formed, fluidity must be maintained in the coating layer. Therefore, although the formation of the screen pattern is usually carried out after the coating is applied, it may be preferable to solidify it by appropriate drying, curing, or coagulation. This will be explained below based on the drawings.

FIG. 1, FIG. 2, and FIG. 3 are explanatory diagrams showing a method of implementing the present invention, and FIG. 4 is a partially enlarged sectional view of a base plate produced by the manufacturing method of the present invention. The screen pattern is formed by pressing a screen against the coating layer formed on the substrate, and FIG. 1 shows an example of this method. In the figure, reference numeral 1 denotes a substrate, on which a coating layer 2 is formed, and by pressing a screen 4 onto the substrate, screen marks are formed in the coating layer 3. When pressing the screen, sliding the spatula-shaped squeegee 5 or using a sweet or roll-shaped squeegee prevents the screen from becoming uneven. When the screen is cylindrical, the screen is rotated and pressed along the coating layer 2. The method shown in FIG. 2 is a method in which a screen 4 is mounted on the outer periphery of a roll 6 to form a cylindrical body, and this is rotated and pressed along the coating layer 2. The method shown in Figure 3 is a method in which a screen 4 is placed between the coating layer 2 and the roll 6, and the screen is pressed by the roll while running in the same direction and at the same speed as the coating layer. , shows the case where the screen is endless. Productivity is increased by making the screen cylindrical or running it endlessly. When pressing the screen, if a mold release agent is applied to the screen in advance, the screen will be released from the paint layer without the paint film adhering to the screen. As mold release agents, water, aqueous solutions of water-soluble compounds such as glycols, polyacrylates,
Salts of methylcellulose, hydroxyethylcellulose, and carboxymethylcellulose, aqueous solutions of water-soluble polymer compounds such as polyethylene oxide and polyvinyl alcohol, and poorly water-soluble solvents such as mineral turpentine are used.

FIG. 4 shows a cross section of a plate in which screen holes 7 were formed in the coating layer on the surface of the substrate by the method described above.

The third step is a step of forming a screen on the coating layer and then solidifying the coating layer by drying or curing. When solidifying, heating is often promoted. If the coating film component is hydraulic, it may be desirable to cure it while retaining moisture or while replenishing moisture.

The substrates according to the present invention include plywood, particle board, fiber board, wood board such as wood wool cement board, wood chip cement board, asbestos board, pulp cement board, lightweight cement board,
These are inorganic boards such as Keikal boards and Sesokou slag boards, or composite boards of wood boards and inorganic boards. If necessary, before forming the coating film, these substrates may be coated with a paint mixed with emulsions, latex, solutions, powders, granules, etc. of synthetic resin, rubber, bitumen, etc., or coated with a film, paste, etc. By bonding the molded products together, treatments such as waterproofing, reinforcing the substrate, preventing penetration into the substrate, and preventing spillage from the substrate may be applied.

[Effect]

The base plate obtained by the present invention has a number of features.

In other words, the screen 107 formed in the coating layer on the substrate is a network-like, almost continuous groove, so when painting with mortar, etc., the screen has a rough effect, making it difficult to apply with a trowel. It improves workability and has strong adhesion.

In addition, air is not trapped between the mortar and the base plate, and blistering does not occur.Water separated from the mortar during mortar painting is appropriately dispersed in the mesh-like screens, so it does not slip into the mortar. There is no fall.

These factors bring about good results in the application workability, adhesion, and appearance of mortar and the like. Furthermore, since it does not have a protruding chevron pattern, there is no limit to the coating thickness of the finishing material, and even when painting relatively thin finishing materials, there is no need to apply an undercoat to level the base in advance, allowing for a spray finish. In some cases, one-shot finishing is possible. This means that you can freely choose the type of finishing material, shorten the construction period, and save costs. Furthermore, in the case of tiling, it can be installed simply by applying adhesive to the surface, which is extremely advantageous.

It also has a number of other excellent features, such as being safe for storage and transportation, preventing damage to the material, and being able to be stamped during construction.

Screens are made by braiding organic fibers such as nylon or polyester or metal wires such as stainless steel into plain weave, twill weave, crimp weave, flat top weave, etc., in a mesh pattern, but there are also bunching metals and expanded metals. , a plate with holes or a cylinder can be used. Regarding the opening of the screen, if it is smaller than 1 mm, clogging will easily occur and screen openings will be difficult to form.
This is undesirable because the screen pattern becomes shallow and the effect of the screen pattern is not sufficiently expressed. The grooves formed in the coating layer preferably have an area of 10 to 50 inches of the painted surface and a depth of 0.3 mm or more.

As described above, in the method for manufacturing the base board of the present invention, the slurry is applied to the substrate to form a coating layer, and then the screen is pressed to form the screen pattern, so the depth of the screen pattern is The thickness of the screen is not determined by the wire diameter, but it can be made shallow or deep, and the viscosity of the slurry cannot be strictly controlled. Or,
The present invention provides an industrially extremely advantageous production method that allows for appropriate drying and the ability to select a method that is suitable for the viscosity characteristics of the slurry. In addition, you can easily use mortar by simply nailing the base plate obtained in this way to pillars, etc.
It can be used as a base for plaster, paint, and tiles, and is also easy to work with.

It has excellent features as a base material, such as being able to form a durable wall surface, and is extremely useful in practice.

Hereinafter, the present invention will be explained in more detail with reference to Examples.

Examples: 320 parts by weight of granulated blast furnace slag, 80 parts by weight of 2 parts by weight, 100 parts by weight of ordinary Portland cement, 120 parts by weight of pearlite (particle size of 1.2 mm or less), styrene-acrylic copolymer emulsion (solid content 57 %), 1.2 parts by weight of methyl cellulose, 5 parts by weight of a dispersant and other additives, and 120 parts by weight of water to obtain a viscous slurry with high thixo) a-beam properties.

The previously obtained slurry was coated on a 6 mm thick structural plywood board that had been waterproofed with an acrylic emulsion paint using a roll coater so that the average coating thickness was 1.1 mm to form a coating layer. . Next, a 6-mesh mesh screen (stainless steel M, wire diameter 0.75
rm, 3.5 trm) were line-joined to form a cylindrical body, and a metal roll equipped with the screen was pressed against the coating layer to form a screen pattern. After forming the screen mesh, it was dried at 60° C. for 10 minutes and then piled and cured to obtain a base plate. In addition, when pressing the screen onto the coating layer,
An aqueous methyl cellulose solution was applied as a mold release agent to the sponge 11, and the test was carried out in a wet state. The scratches formed on this base plate were substantially continuous grooves with depths ranging from 0.5 to 1.2 mm, and the area of the grooves was about 30% of the painted surface.

The adhesion force of the mortar to the base plate thus obtained (plane tension method) was 7.5 kg/cm2.

In addition, this base board was attached to the pillar, and the joints were filled with caulking agent to serve as a base. When bond mortar was applied over it, the workability was good and the mortar did not crack, making it suitable as a base. Furthermore, when stucco was sprayed onto the base obtained in the same manner, an exterior wall with a good finish was obtained without applying leveling mortar.

[Brief explanation of the drawing]

FIGS. 1, 2, and 3 are explanatory diagrams showing a method of implementing the present invention, and FIG. 4 is a partially enlarged sectional view of a base plate produced by the manufacturing method of the present invention. DESCRIPTION OF SYMBOLS 1... Substrate, 2... Paint film layer, 3... Paint film layer in which the screen pattern was formed. 4...Screen, 5...Squeegee-16
・Roll, 7...Suff))-nth.

Claims (1)

[Claims] 1. A coating layer is formed on a substrate, and while the coating layer maintains its fluidity, a mesh-like and substantially continuous groove-like screen is formed on the coating layer using a screen, and then the coating layer is solidified. A method for manufacturing a base plate, characterized by: 2. The method for manufacturing a base plate according to claim 1, wherein the screen is a cylindrical body, and the screen is rotated and pressed along the coating layer. 3. The method for manufacturing a base plate according to claim 1, wherein a screen is attached to the outer circumference of the roll to form a cylindrical body. 4. Place a screen between the coating layer and the roll, and while running the screen in the same direction and at the same speed as the coating layer,
2. The method of manufacturing a base plate according to claim 1, wherein the screen is pressed by a roll. 5. Claim 1, characterized in that the coating layer is a synthetic resin emulsion or a hydraulic composition consisting of rubber latex, silicate hydraulic cement, and lightweight aggregate.
Method for manufacturing the base plate described in Section 1.