JP4540400B2 - Cosmetic method - Google Patents

Description

  The present invention relates to a cosmetic method for a wall surface made of a dry board.

  Conventionally, various dry boards are used as building wall materials. When constructing such a dry board at a construction site, a method is generally employed in which a plurality of dry boards are mounted side by side and then a joint between the dry boards is waterproofed with a sealing material. At this time, if a dry-type board preliminarily surface-applied by factory coating is used, it is possible to simplify the construction at the construction site and shorten the construction period. However, a wall finished with only a dry board tends to have a conspicuous finish, and the surface design tends to be uniform.

On the other hand, Patent Literature 1 describes a finishing method in which an exterior sheet having an elongation of 2% or more is pasted across a joint portion on a wall surface having the joint portion. The invention of this patent document conceals the joints between the dry boards and suppresses the occurrence of cracks due to the displacement of the dry boards.
However, in the method of Patent Document 1, a sheet having a specific physical property value must be used as the exterior sheet. Therefore, the material which comprises a sheet | seat is restrict | limited and a limit arises also in freedom degrees, such as design property.
In addition, if the adhesive is not completely applied when the exterior sheet is applied, water due to rain or the like may wrap around from the end of the sheet and enter the joint. That is, the method of Patent Document 1 has room for improvement in terms of waterproofness.

Japanese Patent Laid-Open No. 2-308059

  The present invention has been made in view of the above-described problems, and in a wall surface composed of a plurality of dry-type boards, a cosmetic construction method capable of obtaining a highly aesthetic finish and ensuring excellent waterproofness. Is intended to provide.

  As a result of diligent studies to achieve the above object, the present inventor has placed dry boards side by side so that recesses are formed at joints between the dry boards, and the recesses are filled with a specific putty material to dry-type. After joining the end faces of the boards, the inventors came up with a method of attaching a dry cosmetic material across the joints between the dry boards, and completed the present invention.

That is, the present invention has the following characteristics.
1. (1) For the joint between adjacent dry boards, a sealing material is filled so that the end face of the dry board appears, and a recess is formed in the joint.
(2) After filling the putty material having a maximum tensile stress of 50 to 500 N / cm ² and an elongation at break of 100 to 600%, the end faces of the dry board are joined to the concave portion,
(3) A makeup method characterized in that a dry makeup material is applied across the joint between the dry boards.
2. The putty material contains 50 to 400 parts by weight of a filler with respect to 100 parts by weight (solid content) of the resin, and the solid content of the putty material is 90% by weight or more. Cosmetic method described in 1 .

According to the cosmetic method of the present invention, the joint portion between the dry boards can be covered and concealed on the wall surface constituted by a plurality of dry boards, and excellent aesthetics can be imparted. About the dry type cosmetic material used as a finishing material, what has various design properties can be widely employ | adopted, without being restrained by an elongation characteristic etc.
Furthermore, the wall surface obtained by the method of the present invention can ensure excellent waterproofness by specific joint treatment, and can prevent water due to rain or the like from entering the joint portion.

  Hereinafter, the best mode for carrying out the present invention will be described.

  The decorative method of the present invention is applied to the wall surface of a building constituted by various dry boards.

  In the present invention, as the step (1), the dry boards are arranged side by side so that the recesses are formed at the joints between the dry boards. Examples of dry boards include cement boards, extrusion boards, slate boards, PC boards, ALC boards, fiber reinforced cement boards, metal siding boards, ceramic siding boards, ceramic boards, calcium silicate boards, plaster boards, and plastic boards. , Hard wood piece cement board, PVC extrusion siding board, plywood and the like. The depth of the recess in the joint is usually 3 to 70%, preferably about 5 to 40% with respect to the thickness of the dry board.

Examples of the method for forming the recess in the joint portion include the following methods.
(I) The dry boards A whose edges 2 are processed are directly butted together (FIG. 1).
(Ii) A joint material 1 having a predetermined width (usually 3 to 50 mm, preferably about 5 to 20 mm) is provided and a dry board is abutted against the sealing material B so that the end face 3 of the dry board A appears on the joint 1. (FIG. 3).
(Iii) A dry joint material having a predetermined width (usually 3 to 50 mm, preferably about 5 to 20 mm) provided with a dry board A so that the end face 3 of the dry board appears on the joint 1. Fit C (Figure 4).

  In the method (i), the edge 2 (surface side) of the dry board A may be cut in advance. The shape after the cutting process is not particularly limited as long as it is within a range in which a concave portion is formed when the dry boards A are directly brought into contact with each other. For example, the shape shown in FIG.

In the method (ii), the sealing material B is filled in the joint portion 1.
A general material can be used as the sealing material B. For example, a silicone-based sealing material, a modified silicone-based sealing material, a polysulfide-based sealing material, a modified polysulfide-based sealing material, an acrylic urethane-based sealing material, a polyurethane-based sealing material, Examples thereof include SBR-based sealing materials and butyl rubber-based sealing materials. The filling method of the sealing material B is not particularly limited, and for example, a known method using a gun or a spatula can be employed.

  Before the sealing material B is filled, a backup material filling or primer coating may be performed in advance. As the backup material, for example, a foamed polyethylene-based backup material or the like can be used. As the primer, for example, a synthetic rubber primer, an acrylic primer, a urethane primer, an epoxy primer, a silicone resin primer, a silane primer, or the like can be used.

  In the method (iii), a dry joint material C is used. As the dry joint material C, for example, the shape shown in FIG. 5 can be used. In FIG. 5, the dry joint material C has fin portions 5 and 6 on both sides of the trunk portion 4. As a material constituting the trunk portion 4 and the fin portions 5 and 6, a synthetic rubber such as chlorinated polyethylene and EPDM (ethylene-propylene-diene-terpolymer) is preferable. Although FIG. 5 shows a dry joint material having two pairs of fins, in the present invention, one having a pair of fins or having three or more pairs of fins can be used.

  When the dry joint material C is fitted into the joint portion 1, the fin portions 5 and 6 are pulled together, and the joint material itself is fixed by the elastic force, and a waterproof effect is exhibited. In the method using the dry joint material C, the work process can be simplified and shortened, the quality can be stabilized, and the like as compared with the method using the sealing material. Furthermore, in the present invention, the drop of the dry joint material C can be suppressed by the action of the specific putty material D described later, and even if the dry board A is displaced due to the influence of temperature, vibration, etc., it is waterproof. Can be secured sufficiently.

  When the sealing material B or the dry joint material C is used in the joint portion 1 between adjacent dry boards, the end face 3 of the dry board is usually about 0.1 to 10 mm (preferably about 0.5 to 8 mm). It is desirable that the sealing material B or the dry joint material C is filled so as to appear.

In the present invention, as the step (2), a specific putty material D is filled into the recesses between the dry boards. FIG. 6 shows a state where the putty material D is filled in the concave portion at the upper portion of the joint portion 1.
In the present invention, the maximum tensile stress is 50 to 500 N / cm ² (preferably 100 to 500 N / cm ² , more preferably 200 to 500 N / cm ² ), and the elongation at break is 100 to 600% (preferably 150). Putty material D that is -600%, preferably 200-600%) is used.
When the putty material D having such characteristics joins the end faces 3 of the dry board, the displacement of the dry board A is controlled, and excellent waterproofness can be ensured.
When the maximum tensile stress of the putty material D is smaller than the above value and the elongation at break is larger than the above value, excessive displacement of the dry board A cannot be suppressed. Therefore, cracks are likely to occur on the joint surface.
When the maximum tensile stress of the putty material D is larger than the above value and the elongation at break is smaller than the above value, the displacement of the dry board A cannot be relaxed at the joint. Therefore, cracks are likely to occur in the putty material D. In an extreme case, the dry board A may be cracked.

The measured values of the maximum tensile stress and elongation at break in the present invention are based on a method according to JIS K 6301 (1995). However, the shape of the test body is dumbbell No. 3, and the tensile speed is 500 mm / min. The temperature during measurement is 23 ° C. and the relative humidity is 50%.
Specifically, it measured by the following procedures.
1. The putty material is poured into the mold so that bubbles do not enter, and the putty material is uniformly stretched to a thickness of 1 mm.
2. Thereafter, the sheet is prepared by curing for 7 days at a temperature of 23 ° C. and a relative humidity of 50%. However, turn the sheet over on the fourth day.
3. A test piece is collected from the sheet using a punching die (dumbbell shape No. 3).
4). The test piece is attached to the tensile tester so that the distance between the grips is 60 mm, and the test piece is pulled at a tensile speed of 500 mm / min until the test piece breaks.

  The composition of the putty material D is not particularly limited as long as it has the above-described characteristics. For example, a silicone-based putty material, a modified silicone-based putty material, a polysulfide-based putty material, a modified polysulfide-based putty material, an acrylic urethane-based material Putty materials, polyurethane putty materials, acrylic putty materials, SBR putty materials, butyl rubber putty materials, and the like can be used. Such putty material D normally contains about 50 to 400 weight percent of filler with respect to 100 parts by weight (solid content) of the resin. As the resin, a moisture curable urethane resin is suitable. Examples of the filler include calcium carbonate, clay, talc, mica, kaolin, zeolite, and diatomaceous earth.

  The solid content of the putty material D is usually 90% by weight or more, preferably 95% by weight or more. By using such a high solid content putty material D, the thinning of the joint portion 1 is suppressed.

  In the present invention, the putty material D is usually filled so that the end faces 3 of the dry board A are joined together. When filling the putty material D, a spatula or the like can be used.

  In the present invention, when filling the putty material D, a stretchable cloth can be interposed in or inside the putty material D. By using such a cloth, the tensile strength of the joint portion 1 can be further increased. The cloth used here is not particularly limited as long as it has stretchability, and examples thereof include natural fiber cloth and synthetic fiber cloth.

In the present invention, as the step (3), the dry cosmetic material F is pasted across the joint portion 1 between the dry boards.
Any dry cosmetic material F can be used without particular limitation as long as it can be applied to a building wall surface. The thickness of the dry cosmetic material F is usually about 1 to 10 mm.

As an example of the dry decorative material F, a paste-like composition containing a binder and an aggregate is cured and molded, or a woven fabric, a nonwoven fabric, a glass cloth, a synthetic paper, a ceramic paper, a mesh, etc. are laminated on these molded products. (Or embedded).
Specific examples of the binder include vinyl acetate resin, polyester resin, alkyd resin, vinyl chloride resin, epoxy resin, acrylic resin, urethane resin, acrylic silicon resin, fluorine resin, or a composite system thereof. These binders may have crosslinking reactivity.
As the aggregate, at least one selected from natural aggregates such as natural stones and natural stone pulverized products, and artificial aggregates such as colored aggregates can be suitably used. Specifically, for example, marble, granite, serpentine, granite, fluorite, cryolite, feldspar, quartzite, quartz sand, and pulverized products thereof, ceramic pulverized product, ceramic pulverized product, glass pulverized product, glass beads, resin Examples thereof include pulverized products, resin beads, mica pieces, and metal particles. Furthermore, those with a color coating on these surfaces can also be used. In addition to aggregates, known color pigments, extender pigments and the like can also be used.
The blending ratio of the binder, the aggregate, etc. can be appropriately set according to the desired design properties.

  The dry cosmetic F is, for example, a paste-like composition (hereinafter simply referred to as “paste-like composition”) containing the above-mentioned binder, aggregate, etc. by a spray method, or a coater such as a flow coater, knife roll coater, roll doctor coater, etc. A method of peeling the support after applying to the support by: a method of directly forming the paste-like composition itself by a roll extrusion method; a method of demolding after pouring the paste-like composition into the sheet-like frame It can obtain by arbitrary manufacturing methods, such as.

When the dry cosmetic material F is pasted, a known adhesive can be used. As the adhesive, for example, an acrylic adhesive, an epoxy adhesive, a urethane adhesive, a rubber adhesive, or the like can be used. These adhesives may be colored.
Moreover, it can also affix using an adhesive, an adhesive tape, a nail, a hook, a pin, etc. other than an adhesive agent.

  Examples are given below to clarify the features of the present invention.

Example 1
A colored aggregate having a particle size of 0.1 to 0.5 mm was mixed and dispersed in an acrylic resin emulsion (solid content: 50% by weight) to obtain a paste-like composition. This paste-like composition was poured into a mold (length 600 mm × width 600 mm × depth 5 mm) coated with a release agent, and embedded while pressing the glass cloth with a roller while the paste-like composition was undried. Drying material F1 was obtained by demolding after drying for 48 hours. The dry cosmetic material F1 had a thickness of about 3 mm.

Two ceramic siding boards (length 2400 mm x width 900 mm x thickness 12 mm) were placed side by side with a 10 mm wide joint between the plates, and a dry joint material C1 (FIG. 5) appeared on the end face of 2 mm. The concave portion was formed by fitting.
Next, putty material D1 (moisture curable urethane resin-based putty material, solid content 95% by weight, resin: filler = 100: 90 (solid content ratio), maximum tensile stress 350 N / cm ² , (Elongation rate at break 400%) was applied and dried at room temperature for 24 hours. The putty material D1 was filled and applied to the surface of the siding board in the vicinity of the joint with a width 15 times the joint width.
Then, the said dry type cosmetic material F1 (a total of 4 sheets) was affixed with the acrylic adhesive so that a joint part might be straddled.
About the test body obtained by the above method, the in-plane shear test was implemented based on JISA1414. As a result, no abnormalities such as cracks were found even at displacement = H (siding board height (mm)) / 100.

(Comparative Example 1)
The test was conducted in the same manner as in Example 1 except that the putty material D1 was changed to a putty material D2 (modified silicone-based putty material, solid content 95% by weight, maximum tensile stress 28 N / cm ² , elongation at break 1050%. As a result, cracks were found on the joint surface in the in-plane shear test.

(Comparative Example 2)
The putty material D1 was tested in the same manner as in Example 1 except that the putty material D3 (epoxy putty material, solid content 95% by weight, maximum tensile stress 700 N / cm ² , elongation at break 10%) As a result, in the in-plane shear test, the putty material broke early and cracks occurred in the joint surface.

It is sectional drawing which shows an example of the method of forming a recessed part in a joint part. It is sectional drawing which shows an example of the method of forming a recessed part in a joint part. It is sectional drawing which shows an example of the method of forming a recessed part in a joint part. It is sectional drawing which shows an example of the method of forming a recessed part in a joint part. It is sectional drawing which shows an example of a dry-type joint material. It is sectional drawing which shows the state with which the putty material was filled. It is sectional drawing which shows the state which affixed the dry cosmetics.

Explanation of symbols

A: Dry board B: Sealing material C: Dry joint material D: Putty material E: Adhesive F: Dry cosmetic material 1: Joint part 2: Dry board edge part 3: Dry board edge face 4: Trunk parts 5-6: Fin part

Claims (2)

(1) For the joint between adjacent dry boards, a sealing material is filled so that the end face of the dry board appears, and a recess is formed in the joint.
(2) After filling the putty material having a maximum tensile stress of 50 to 500 N / cm ² and an elongation at break of 100 to 600%, the end faces of the dry board are joined to the concave portion,
(3) A makeup method characterized in that a dry makeup material is applied across the joint between the dry boards. The putty material comprises 50 to 400 parts by weight of filler per 100 parts by weight of the resin (solids), the solids content of the putty material, according to claim 1, characterized in that less than 90% by weight Makeup method .

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