JPH10159292A - Structure of building wall surface using board for construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the structure of a building wall surface, in which workhours and labor hours related to finish-coating putty are eliminated and no problem of environmental pollution is also generated. SOLUTION: The building wall surface formed by arraying a plurality of the boards (b) for construction has putty treating sections (p) formed by giving putty to joint sections among the boards (b) and the boards (b) and non-putty treating sections (q) at the centers of the boards to which the putty treatment is not executed. Puttying and putty polishing are not executed to the non-puttied sections (q) of the boards (b), a bed layer consisting of primer paints 101 is formed onto the whole surface of the wall surface containing the non-puttied sections (q) and the putty treating sections (p), and a finish-coating layer composed of paints 8 for finish coating is formed onto the bed layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a building wall using a building board. In more detail, regarding the finishing of building walls using building boards, we have solved the technical issues of putty construction in conventional building painting, greatly reducing the painting process and work time, reducing work labor and environmental issues. The purpose of the present invention is to provide a building wall structure that has achieved a significant reduction in pollution sources.

[0002]

2. Description of the Related Art A wall finishing operation using a building board in a so-called dry wall method for a general house, an apartment house, a middle-rise building or the like is usually performed in the following ten steps. An outline of the process will be described with reference to FIGS. 1 to 5 which schematically show the state of the cross section at each stage of this work process.

[Step (1)] A building board b, such as a calcium silicate plate or plaster board (gypsum board), is attached to a building frame (not shown) (FIG. 1). [Step (2)] A joint tape 1 made of glass fiber or the like (having a side of about several mm) made of glass fiber or the like is applied to the joints of the boards b and b. Material (undercoat putty) 2 is painted using a spatula,
A base treatment is performed (FIG. 1). [Step (3)] After the undercoat putty is dried, the putty treatment 3 is further performed on the thin part (the part where the moisture of the putty has evaporated) 21 (FIG. 2). [Step (4)] Polishing is performed with sandpaper in order to smooth the seam portion that has been subjected to the above processing. [Step (5)] Since the above-mentioned undercoat putty has a rough coating surface, the middle coat putty 4 is coated with a spatula (FIG. 3). [Step (6)] To adjust the coating surface of the intermediate coating putty 4, polishing is performed with sandpaper. [Step (7)] An overcoat putty 5 is applied to the entire surface of the board including the middle coat putty 4 with a spatula (FIG. 4). [Step (8)] After drying, polishing is performed with sandpaper. In this polishing, the overcoat putty 5 is polished to a thickness of about half.
4 in FIG. 4 shows the surface of the overcoated putty after polishing. [Step (9)] In order to prevent the suction of the top coating paint and to improve the adhesion to the top coating putty, a sealer coating 7 is performed on the top coating putty (FIG. 5). [Step (10)] Finally, the top coat 8 is applied (FIG. 5).

The above steps will be described in more detail. In step (7), the overcoat putty conventionally used is a synthetic resin emulsion putty whose main composition is a vinyl acetate emulsion, and a copolymer of vinyl acetate and acrylic. Polymerized emulsion, solid content 60% by weight or more, viscosity 200,000 cp, P
Generally, / B is 1,000 / 100 or more. Since this is a paste, it is usually coated with a spatula to a thickness of about 0.5 mm to fill the depressions and irregularities on the painted surface. This spatula painting requires a lot of effort,
In particular, in the step (7), a large amount of labor is required to apply a spatula to the entire board. In addition, drying takes about 4 hours or more.

[0005] After drying, in step (8), the entire surface is polished with sandpaper to smooth the surface.
Polished to about 1/2 the thickness of the overcoat putty. Its duration is wall area 100 m ² per worker per about 2
It takes ~ 3 hours. The overcoat putty is coated with a thickness of 0.5 mm as described above, and the overcoat putty solid content of about half the thickness (about 0.25 mm thickness) is polished. If the specific gravity is 2.8, the wall area is 100
m ² to about 70kg of overcoat putty solids per is to be spread as dust around the work area. This will significantly damage the surrounding environment and will also adversely affect the health of the workers.

[0006]

As described above, in the conventional method, a lot of work time and labor are required in the steps (7) and (8) relating to the above-mentioned putty putty, and a large amount of dust can be added. The outbreak causes environmental pollution. Then
An object of the present invention is to provide a structure of a building wall surface using a building board which eliminates the work time and labor concerning an overcoat putty and does not cause a problem of environmental pollution.

[0007]

According to the present invention, there is provided a method comprising:
(1) to (4) are unavoidable steps, but the steps (7) and (8) for the overcoat putty, and more preferably the steps (5), (6), (7) and (8) for the middle coat putty and the topcoat putty If it can be omitted, many problems concerning putty painting and polishing can be solved. The present inventors have paid attention to this point, and as a result of intensive research, completed the present invention, that is, in the structure of the building wall formed by arranging a plurality of building boards, This wall surface has a putty-processed portion formed by applying putty to a seam portion between the board and the board, and a non-putty-processed portion in the center of the board that is not subjected to the putty process,
The non-putty treated portion of the board is not subjected to putty coating and putty polishing, and the wall surface including the non-putty treated portion not subjected to the putty coating and putty polishing and the above putty treated portion is provided. On the entire surface, a base layer of a base adjustment paint is formed, and a top coat of a top coat is formed on the base layer. is there.

In the structure of a building wall using the building board according to the present invention, a putty treated portion formed by applying putty is provided at a joint portion between the boards. On the other hand, in the center of the board, there is a non-putty processed portion that has not been subjected to any putty processing. Then, an undercoat layer made of an undercoat adjustment paint is formed on the entire surface of the wall surface including the putty-treated portion and the non-putty-treated portion, and an overcoat layer of an overcoat paint is formed on the undercoat. Therefore, the above-mentioned steps (7) and (8) of coating a top coat putty with a spatula on the entire surface of the board, drying the coat, and polishing the putty can be made unnecessary. More desirably, the above steps (5), (6), (7), and (8) are not required, so that a large amount of work time, labor and coating cost are reduced, and generation of dust due to polishing is prevented. Was made.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of a building wall using a building board according to the present invention will be described with reference to the drawings. FIG. 6 is a sectional view showing a structure of a building wall using the building board according to the present invention, and FIG. 7 is an overall view of the wall.

In the structure of a building wall using this building board, as shown in FIGS. 6 and 7, building boards b, b such as a calcium silicate plate, a plaster board (gypsum board) and a plywood are used. It is attached to an architectural framework (not shown) with its peripheral edges abutting each other. A joint tape 1 made of glass fiber or the like is applied to the joint between the boards b, b, and a joint treatment material (undercoat putty) 2 for a gypsum board, for example, is applied thereon. The undercoat putty 2 is applied through the stitches of the joint tape 1 to the butting portions of the peripheral edges of the building boards b, b, and the joint tape 1
It is also applied to the upper surfaces of the architectural boards b, b with a slightly wider eye. 21 in the figure, when the undercoat putty dries,
The thin portion 21 is filled with the same type of undercoat putty 3 as shown in FIG. The surfaces of the undercoat putties 2 and 3 are polished and smoothed with sandpaper, and an intermediate coat putty 4 is applied thereon with a spatula. The surface of the intermediate coating putty 4 is also polished with sandpaper for coating surface adjustment. The intermediate coating putty 4 may be applied as needed, and may be omitted and only the undercoating putties 2 and 3 may be formed. The part to which the intermediate coating putty 4 or the undercoating putties 2 and 3 is applied is the putty processing part p, and the other part (the center part of the board) is not putty processing as it is the board. This is the non-putty processing portion q. Then, on the entire surface of the board including the putty-treated portion p and the non-putty-treated portion q, a base adjustment paint is applied with a brush, a roller,
The base layer 101 is coated by a coating method such as spraying.
Are formed. Further, a top coat is applied to the surface of the underlayer 101 by a coating method such as brush, roller, spraying or the like to form an overcoat layer 8. The undercoat putties 2 and 3 and the middle coat putty 4 may be the same as conventional ones.

The above-mentioned base adjustment paint has a particle diameter of 0.1 to 0.1.
A coating composition containing a synthetic resin emulsion having a viscosity of 100 to 10 μm.
A material having a thickness of 000 cp and a thickness of 0.1 mm or more when dried is used. Here, the term “thickness indicating that the film thickness when dried is 0.1 mm or more” means a property that a coating film having a film thickness when dried is 0.1 mm or more can be formed by one application. I do.

[0012] Further, the base adjustment paint is 10 to 90% by weight of acrylic emulsion, vinyl acetate emulsion,
Styrene / acrylic copolymer emulsion or acrylic /
Contains vinyl acetate copolymer emulsion, PVC is 40
~ 80 wt%, P / B is 100/100 ~ 1,000 /
Desirably, it has a thickness of 100 and a thickness of 0.2 mm or more when dried. Here, the term “thickness” in which the film thickness when dried is 0.2 mm or more means the property that a coating film having a film thickness when dried is 0.2 mm or more can be formed by one application. I do.

More preferably, the above-mentioned base preparation coating composition contains 10 to 90% by weight of an acrylic emulsion, a styrene / acrylic copolymer emulsion or an acrylic / vinyl acetate copolymer emulsion, and the fixed component is 60% by weight or more. , PVC is 45 to 70% by weight, P / B is 200
/ 100 to 700/100.

That is, the undercoat coating composition having the above-mentioned physical properties can be applied to a thickness of 0.1 mm or more, preferably 0.2 mm or more, and the smoothness of the coating film surface is the same as that of the conventional coating composition. It can have the same smoothness as the sealer coating. As a result, without applying both the top coat putty, and more preferably both the middle coat putty and the top coat putty, the base coat is only applied by a paint application method such as brush, roller, spraying, etc. It is possible to perform a base adjustment equivalent to a painted state.

Various emulsion resins such as an acrylic emulsion, a vinyl acetate emulsion, a styrene / acrylic copolymer emulsion, or an acryl / vinyl acetate copolymer emulsion can be used as the emulsion resin used in the base coating composition. Particularly, an acrylic emulsion, a styrene / acrylic copolymer emulsion or an acrylic / vinyl acetate copolymer emulsion is preferred.

The radical polymerizable monomers used in these emulsion resins include, for example, methyl (meth)
Acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, cyclohexyl (meth) acrylate, acrylonitrile, 2-hydroxyethyl (meth) acrylate, divinylbenzene, styrene, methylstyrene, vinyl chloride, Examples include, but are not limited to, vinyl acetate, acrylic acid, methacrylic acid, and the like.

As the emulsifier used in the base coating composition, emulsifiers such as anionic, nonionic, a combination of anionic and nonionic, cationic, and amphoteric can be used. Examples of the anionic emulsifier include higher alcohol sulfate sodium salt, alkylbenzene sulfonate sodium salt, dialkyl succinate sodium sulfonate, and alkyl diphenyl ether disulfonate. Examples of the nonionic emulsifier include polyoxyethylene alkyl allyl ether and the like, and examples of the cationic emulsifier include alkylpyridinyl chloride and alkylammonium chloride.
Further, a reactive emulsifier or the like may be used. The amount of the emulsifier used is 0.01 to 1 part by weight per 100 parts by weight of the polymerizable monomer.
0 parts by weight are used.

As the polymerization initiator used in the primer preparation coating composition, water-soluble persulfates such as potassium persulfate, sodium persulfate and ammonium persulfate are used. In addition, as an oil-soluble polymerization initiator, for example, 2,2′-azobisisobutyronitrile,
An azo-based polymerization initiator such as 2'-azobis (4-methoxy-2,4-dimethylvaleronitrile) and an organic-based oxidative polymerization initiator such as benzoyl peroxide and butyl peroxide can be used.

The extender pigments used in the base preparation coating composition include calcium carbonate, magnesium hydroxide, aluminum hydroxide, barium sulfate, mica, talc, kaolin, silicic acid, silicate, magnesium carbonate and the like. A combination of these is used. Also,
As the coloring pigment, titanium oxide, iron oxide, carbon black and various organic pigments are used.

In some cases, as a primary rust preventive or rust preventive pigment such as sodium benzoate for rust prevention of nails and the like,
Zinc chromate, strontium chromate, aluminum phosphate, barium metaborate, and the like, and combinations thereof can also be used. In addition, in addition to the above, an antifoaming agent, a thickening agent, a dispersing agent, an antifreezing agent, a film-forming aid, a preservative, a fungicide, and the like can be used in the base coating composition.

Here, a construction method for obtaining a structure of a building wall using the building board according to the present invention will be described. Reference is made to the figures described.

[Step (1)] Architectural boards b such as calcium silicate boards, plaster boards (plasterboard) and plywood,
b is attached to a building framework (not shown) (FIG. 1). [Step (2)] A joint tape 1 made of glass fiber or the like is applied to the joint between the boards b and b, and a joint treatment material for gypsum board (undercoat putty) 2 is applied from above using a spatula. A base treatment is performed (FIG. 1). [Step (3)] After the undercoat putty is dried, the putty treatment 3 is further performed on the thinned portion 21 (the thinned portion of the putty due to evaporation of moisture) (FIG. 2). [Step (4)] Polishing is performed with sandpaper in order to smooth the seam portion that has been subjected to the above processing. [Step (5)] Since the above-mentioned undercoat putty has a rough coating surface, the middle coat putty 4 is coated with a spatula (FIG. 3). [Step (6)] To adjust the coating surface of the intermediate coating putty 4, polishing is performed with sandpaper.

The above steps are the same as the conventional steps.
Next, as a specific process of the present invention, the above-mentioned base adjustment paint 101 is applied by a paint application method such as brush, roller, spraying or the like (FIG. 6). Thereby, as shown in Examples described later, it is possible to obtain a coating film having a thickness of about 0.25 mm, which is comparable to the thickness of both the conventional overcoat putty and the sealer coating, and has a smoothness equivalent to that of the sealer coating. It was possible to obtain something with the property.

Finally, in the same manner as in the conventional process (10), the top coat 8 is applied to complete the structure of the building wall using the building board according to the present invention (FIG. 6). In the above example, after performing the step relating to the intermediate coating putty in steps (5) and (6), the base adjustment paint was applied.
Steps (5) and (6) may be omitted, and the base adjustment paint may be applied on the undercoat putty.

[0025]

[Test method] As described above, the base adjustment paint composition according to the present invention is applied by the method described in the above-described embodiment and the like, thereby omitting the putting process using a spatula and the polishing step. What you want to do. Therefore, in this coating composition, the coating film has a thickness of 100 μm.
The above thickness is indispensable, and more preferably, the thickness is preferably 200 μm or more, and the state of the coated surface must be smooth and uniform. The upper limit of the coating is not particularly limited, but does not need to exceed about 400 μm. In addition, from the place where performance suitable for groundwork adjustment at the construction site is required, we decided to conduct tests with the following unusual test items and compare and evaluate their suitability. .

"Roller skin test" This is to check the leveling property and smoothness after coating. The state of coating after roller coating is observed, and the degree of the evaluation is evaluated in the order of △ x according to the degree. Hereinafter, the evaluation procedure is the same.

"Substrate suction test" Since the base putty at the joint part of the plaster board has a strong suction property, unevenness occurs on this part of the wall surface after painting. The appearance of this is observed and evaluated. This is affected by the P / B and the film thickness. If the P / B is small, it is difficult to absorb the film, but if the P / B is too small, the film thickness cannot be obtained.

"Coating workability test" When coating with a roller or brush, it is said that the larger the amount of paint contained in the roller and brush, the wider the area that can be coated at once and the better the coating workability. This depends on the thixotropic properties of the paint. If the thixotropic coefficient is too high, the amount of paint contained in the roller or brush decreases. Also, it will not be possible if it is too low.

"Base fluffing test" In the case of a plaster board, paper is stuck on the plaster surface. When the putty at the joint is polished, the paper becomes sprinkled. However, if the thickness of the paint applied on this is small, the fluffing remains. The presence or absence of this fluff is observed.

"Film thickness" Depends on P / B, the larger the P / B value, the larger the coated surface, but at the same time, the leveling property tends to decrease. In the evaluation, ○ indicates that a film thickness of 200 μ or more was obtained during drying, and △ indicates that a thickness of 100 μ
X means that a film thickness of less than μ was obtained, and X means that a film could not be formed or a film thickness of less than 100 μ was obtained.

[0031]

EXAMPLES Table 1 shows the monomer composition ratios of the synthetic resin emulsions A to F used for the base preparation paint. In the description of the examples, parts or% indicate parts by weight or% by weight, unless otherwise specified. In addition, the unit of the numerical value of the blending amount in each table is parts by weight. The synthetic resin emulsion A shown in Table 1 was used.
To F have a solid content of 50% and an average particle size of the emulsion of 0.1 to 1 μm.

[0032]

[Table 1]

Polymerization Method (Part 1) With respect to emulsions A to D in Table 1, a polymerization reaction was carried out by the following method. Attach a stirrer and a thermometer to the four-necked flask, and add 50 parts of water, 0.2 parts of sodium dodibenzenebenzenesulfonate, 0.2 parts of polyoxyethylene nonyl ferfether.
8 parts, 0.3 parts of potassium persulfate were charged, and under a stream of N ₂ gas,
The mixture was heated with stirring at 80 ° C., and the monomers shown in Table 1 were mixed at the respective composition ratios and the solid content after the completion of the reaction was 50%.
Is reacted dropwise at 80 ° C. over 3 hours. After completion of the dropwise addition, the mixture is heated and aged at 80 ° C. for 2 hours. After cooling, 0.1 part of aqueous ammonia was added, and the mixture was filtered through a 200 mesh wire net to obtain an emulsion having an average particle size of about 0.3 μm.

Polymerization Method (Part 2) Emulsions E and F in Table 1 were reacted under the same conditions as above, but 0.5 part of hydroxyethyl cellulose was added as a protective colloid. The reaction was carried out as described above to obtain an emulsion having an average particle size of about 0.5μ.

Base Adjustment Paint Table 2 shows the compositions of the base adjustment paints prepared by using the above emulsions A to F and adding pigments and various additives thereto. In addition, Table 3 comparing the effect of the resin composition on the performance of the base preparation paint shows the performance test results when the type of pigment was changed. Table 4 shows the relationship between the P / B and PVC values and the performance test results.

The undercoat paints having the compositions shown in Tables 2 to 4 (Examples 1 to 13 and Comparative Examples 1 to 6) were applied to the step (6) (intermediate putty 4) shown in the above embodiment of the invention. The entire surface of the building board (plaster board) including the surface of the intermediate coating putty 4 which had been subjected to polishing with sandpaper for adjusting the coating surface was coated with a roller. The thickeners to defoamers shown in Tables 3 and 4 are the same as the thickeners to defoamers in Table 2, and are listed in the respective columns from the thickeners to defoamers in Table 2. Adekanol UH-462 is Asahi Denki, High Metroise 65-SH-4000 is Shin-Etsu Chemical, Demol E
P is Kao product, STP is Mitsui Chemicals product, Suraoff 72N
Is a Takeda Pharmaceutical product, Texanol is an Eastman Chemical product, and Nopco 8034 is a San Nopco product.

[0037]

[Table 2]

[0038]

[Table 3]

[0039]

[Table 4]

From the results of these tests, the coating compositions of the examples can form a coating film of 100 μm or more, and any of them can be used as the base coating composition of the present invention. Above all, those using an acrylic emulsion are capable of forming a coating film of 200 μ or more, and particularly contain a styrene / acrylic copolymer emulsion,
PVC is 45-70%, P / B is 200 / 100-70
It was confirmed that the ratio was preferably 0/100. In other words, in the structure of the building wall using the building board of the above-described embodiment, all of the wall surface finishing comparable to the conventional one can be realized, and a large amount of work time and labor concerning the overcoat putty can be omitted. Thus, the work environment can be improved.

[0041]

As described above, the present invention uses an architectural board which realizes the finishing of the wall surface comparable to that of the prior art, eliminates the work time and labor concerning the overcoat putty, and does not cause the problem of environmental pollution. The structure of the building wall could be provided.

[Brief description of the drawings]

FIG. 1 is a schematic view showing steps (1) and (2) of a conventional method for forming a building wall.

FIG. 2 is a schematic view showing steps (3) and (4) of a conventional method for forming a building wall.

FIG. 3 is a schematic view showing steps (5) and (6) of a conventional method for forming a building wall.

FIG. 4 is a schematic view showing steps (7) and (8) of a conventional method for forming a building wall.

FIG. 5 is a schematic view showing steps (9) and (10) of a conventional method for forming a building wall.

FIG. 6 is a schematic view showing a main part of a method for forming a building wall according to the present invention.

FIG. 7 is an overall view of a building wall according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Joint tape 2, 3 Undercoat putty 4 Intermediate putty 5 Topcoat putty 7 Sealer paint 8 Topcoat paint 101 Base adjustment paint b Building board p Putty processing part q Non-putty processing part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Keiichiro Zen 2-37-2 Minamisuna, Koto-ku, Tokyo Inside Rock Paint Co., Ltd. Tokyo Branch (72) Inventor Hiroshi Matsui 2-37-2 Minamisuna, Koto-ku, Tokyo Rock Paint Co., Ltd. Tokyo Branch

Claims (1)

[Claims] 1. A structure of a building wall formed by arranging a plurality of building boards, wherein the wall is formed by applying putty to a joint between the boards. A putty-treated portion and a non-putty-processed portion at the center of the board that has not been subjected to the putty process; the non-putty-processed portion of the board has not been subjected to putty coating and putty polishing; An undercoat layer made of an undercoating paint is formed on the entire surface of the wall surface including the non-putty-treated portion not coated and putty-polished and the above-mentioned putty-treated portion, and an overcoat layer of an overcoat paint is formed on the undercoat. The structure of the building wall using the building board, characterized in that a was formed.