JP2001164728A - Wall-surface finishing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve trouble in which the crack and grain depression of a coating material are not avoided in a joint section and a solution has been obtained in the conventional construction method of a stud wall framing finished on both sides or the like, in which a board body is attached to a column through the joint section, the joint section is filled with a sealant and the surface of the joint section is coated with the coating material and finished. SOLUTION: The end section of one board body is cut off in the upper section of a stepped section up to the half of thickness from the surface side while being joined in a half-abutting shape abutted against the other board body between the both boards of a wall foundation, the joint section, to which a half groove is formed, is filled with rigid putty, elastic cloth and elastic putty are superposed extending over the joint section, and the coating material is applied, thus solving trouble.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a finishing structure for a wall, and more particularly to a finishing structure for joints between wall plates.

[0002]

2. Description of the Related Art The large wall construction method, in which a wall plate is painted, has no joints and has an excellent appearance, and thus has been widely used in the field of detached buildings. In the conventional joint structure, a method is used in which a sealing material is filled into a joint having a shape such as a V-cut, a joint, a punch, or the like, and then a finish coating material is applied smoothly. After that, a method of applying a coating material to finish the coating has been adopted.

[0003]

However, in these finishing methods, there remain problems such as cracks in the coating film, joints being dented and the appearance being impaired, filling of the joints being difficult and lacking workability. I was

[0004]

Therefore, as a result of various studies in the present invention, one plate is cut in a stepped manner from the surface side to the middle of the thickness at the end portion, and is half-butted against the other plate. After filling the hard putty into the joints and hardening it, place the elastic cloth, apply the elastic putty over the elastic cloth, and apply the coating material to finish the wall. Thus, the problem in the conventional method was solved.

[0005] As described above, putties are filled in joints between the plate bodies as in the conventional structure, and after the finish is made smooth, a coating material is applied to finish the outer wall as a large wall method. Since expansion and contraction occurred, dents in joints were not prevented due to cracks in the coating film or shrinkage of the filled putty. In order to avoid cracks in the coating film, there are means such as using a plate having a small dimensional change, suppressing a dimensional change of the plate, and employing a coating material having excellent elasticity.

However, all the materials and construction methods have limitations and cannot solve all the problems. In view of such circumstances, the present inventor cuts off the end of one plate in a step-like manner from the surface side to a half of the thickness between the plate members of the wall base, and half-butted the other plate member. Excellent adhesive performance at joints with half-grooves formed, cured (solidified)
The joint is filled with a hard putty having a small shrinkage and a small tensile elongation, preferably an epoxy resin-based putty, and an elastic cloth and an elastic putty are layered between the plates to cover the joint, and then a coating material is applied. The above-mentioned problem has been solved by adopting a wall-finished structure.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a view of an embodiment according to the present invention, in which one end of one plate (2) is cut out stepwise from the surface side to a half of the thickness, and the other plate is pushed into the column (1). After the semi-groove (4) is formed in the joint portion, the hard putty (3) is filled in the semi-groove (4), and the elastic cloth (3) is provided near the connecting portion of the plate (2). 5) is adhered, an elastic putty (6) is applied in a state of covering the elastic cloth (5), and then an elastic type coating material (7) is applied to finish.

As the plate, a plate used for finishing the outer wall, such as an asbestos slate plate, a perlite board, a calcium silicate plate, and a wool cement plate, can be used. For example, ceramic sizing boards and the like which are frequently used recently are preferable.

As the hard putty to be filled into the joints, putty of epoxy resin type, urethane resin type, silicone resin type, polyester resin type, etc. can be used. An epoxy resin type having a large force and a small amount of thinning is preferable, and among them, an epoxy resin type composition comprising a hard component having a curing shrinkage of 2% or less and a tensile elongation of 2% or less is desirable.

A sealer may be applied around the joint, if necessary, to prevent the coating material from being sucked into the plate body and to adhere the coating material and fill a partial depression of the plate body. Examples of the sealer include a sealer made of components such as chlorinated rubber and an acrylic emulsion, and the material of the coating material, the plate and the like may be determined in consideration of the adhesion and the like.

As the elastic cloth, natural fibers such as cotton and hemp,
Suitable for fabrics and non-woven fabrics made of synthetic fibers such as vinylon, nylon, polyester, or the like, glass fibers, or a mixed fiber thereof, etc., are suitable for materials having excellent elasticity.

The elastic putty is used for absorbing and relaxing the expansion and contraction of the plate to reduce the influence on the coating material. Preferably, the elastic putty is made of a material having an elongation at -10 to 20 ° C. of 100% or more. Is desirable. As a component of the elastic putty, a resin emulsion is suitable. For example, an acrylic rubber emulsion, an ethylene / vinyl acetate resin emulsion, an acrylic / styrene resin emulsion, a vinyl acetate resin emulsion and the like can be used.

The coating material to be coated on the uppermost layer is a type comprising a resin component which has elasticity, is excellent in adhesion and weather resistance, and has good performance as other coating materials, such as acrylic resin and acrylic styrene. A resin emulsion comprising components such as a copolymer resin and an ethylene / vinyl acetate copolymer resin is suitable, and preferably a coating film having an elongation of 10% or more at -10 to 20 ° C of a dried coating film in a test method according to JISk6301. Desirably, it is a material.

Conventionally employed joint structures for mounting the plate include a V-groove structure as shown in FIG. 2, a phased groove structure as shown in FIG. 3, and a butt joint structure as shown in FIG. However, the present invention employs the half-butt structure as described above.

Next, an embodiment of the present invention will be described. Example 1 An installation employing the connection / finish structure shown in FIG. 1 (wall foundation: using a 12 mm thick ceramic sijin board as a plate and screwing), and an epoxy resin-based hard material having the following characteristic values for a hard putty After filling the half groove with putty (Jolly Seal JB-10 manufactured by Aika Kogyo Co., Ltd.), curing and curing, an elastic cold gauze made of nylon and having a thickness of 0.4 mm covers the half groove over a width of 50 mm and adheres. Then, an acrylic rubber emulsion-based elastic putty (manufactured by Aika Kogyo Co., Ltd., Joli Seal JB-70) having the following characteristic values is applied and dried over a width of 50 mm so as to cover the elastic cold gauze, and then dried with an acrylic / styrene copolymer resin. Emulsion coating material (Jolipat JP-100 manufactured by Aika Kogyo Co., Ltd.)
Was applied by roller at an average application amount of 2.0 kg / m ² to obtain a joint structure sample of Example 1.

COMPARATIVE EXAMPLE 1 A sample of the wall surface finishing structure of Comparative Example 1 was obtained in the same manner as in Example 1 except that the joint shape was changed to the V-groove shape shown in FIG.

Comparative Example 2 A sample having a wall surface finishing structure of Comparative Example 2 was obtained in the same manner as in Example 1 except that the joint shape was changed to the phased groove structure shown in FIG.

Comparative Example 3 A sample having a wall surface finishing structure of Comparative Example 3 was obtained in the same manner as in Example 1 except that the joint shape was changed to the butted structure shown in FIG.

Comparative Example 4 A joint in which the joint of the V-groove shape in FIG. 2 was filled with a modified silicone resin-based sealing material and the coating material of the example was applied without using an elastic cooling gauze or an elastic putty 4 was obtained.

The results of measuring the joint strength, breaking distance, construction workability, and joint design of the samples of Examples and Comparative Examples are as shown in the table. However, the joint strength and the breaking distance were measured for a sample prepared using only the plate body excluding the columns in the figure.

Characteristic Value 1. Epoxy resin hard putty (Joli Seal JB-10 manufactured by Aika Kogyo Co., Ltd.) Curing shrinkage 1.7% or less (measured after curing for 7 days at 25 ° C.) Strength 8.5 N / mm (according to JIS k6911) Hardness 80 HdD (according to JIS k7215) Elastic putty Aika Kogyo Co., Ltd. product (Joli Seal JB-70) Elongation 280% measured at 20 ° C (according to JIS A6909) 150% measured at -10 ° C (same as above) Adhesive strength 8.5 kgf / cm (according to JISA 6909) Crack resistance No abnormalities (measured in a 3m / sec airflow)

[0022]

Measurement Method 1. Joint strength Measure the maximum strength before breaking. Measurement unit N / mm^Two  -Mark cannot be measured. 2. Breaking distance Pull a sample with a width of 20 mm in the length direction and measure the distance (mm) until the joint or board breaks. -Mark cannot be measured due to excessive elongation. 3. Workability Evaluate by the filling property of putty when working with a spatula. ◎ Very good, good, × poor workability Joint design The quality of joints is judged based on whether there are any defects or abnormalities in the appearance such as dents in the joints. Good appearance, × dent

[0024]

According to the wall finishing structure of the present invention, the joints between the base plates are formed in a semi-butt shape, and the joints are filled with a hard putty having excellent adhesive performance, a small curing shrinkage and a small tensile elongation. While further suppressing the movement of the plate,
Dimensional change of the plate due to the presence of elastic cloth and putty,
The movement of the connecting portion is moderated and absorbed, and in addition to the flexibility of the elastic coating material having elasticity, cracking of the coating film is avoided.

[0025]

According to the wall finishing structure of the present invention, the joints between the plate members of the wall base are formed in a semi-butting shape, and the joints are filled with a hard putty having a small curing shrinkage rate, a small tensile elongation rate, and excellent adhesiveness. Therefore, the movement of the plate body is suppressed. In addition, since the elastic putty and the elastic putty are overlaid on the hard putty, the movement of the plate is absorbed and reduced. Therefore, the effect of the uppermost layer on the coating material is hardly minimized, and the structure is finished so that the coating film is less likely to crack.

In addition, since the material is a coating material or an elastic coating material, no crack is generated in the coating film. In addition, the joint is filled with hard putty with no curing shrinkage, and is covered and buffered by the upper layer of elastic cloth and elastic putty. It is. In addition, workability can be easily worked without difficulty in filling putty such as a butt shape.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view of a wall finishing structure according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view in which connection of a plate is a V-groove-shaped connection structure.

FIG. 3 is a partial cross-sectional view in which connection of a plate body is a connection structure of a phased groove.

FIG. 4 is a partial cross-sectional view in which connection of a plate body is a connection structure of a perforated joint.

[Explanation of symbols]

 1, 11, 12, 13 Pillars 2, 21, 22, 23 Plate 3 Hard putty 4 Half groove 5 Elastic cloth 6 Elastic putty 7 Coating material

Claims (2)

[Claims] 1. A semi-groove having a semi-abutting shape in which one of the plate bodies is cut in a stepped manner from the surface side to the middle of the thickness at an end portion, and the other of the plate bodies is abutted with the other plate body. A wall finishing structure, characterized in that a hard putty is filled in the joint portion formed with, and an elastic cloth and an elastic putty are covered and layered over the joint portion, and then a coating material is applied. 2. The wall finishing structure according to claim 1, wherein the hard putty is an epoxy resin-based putty.