JPH10227075A - Joint concealing material and joint concealing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To follow up the vibration or the like of a panel, and prevent the occurrence of a crack on a joint part and the panel by forming a thin plate out of a resin thin plate, and rimming the periphery of the resin thin sheet with a fabric net as an overlap width, regarding a joint concealing material. SOLUTION: A joint concealing material is formed out of a resin thin plate 2 and a fabric net 3. Furthermore, only the fabric net 3 is bonded to panel type wall materials 1a and 1b, and the thin plate 2 is not jointed to the panel type wall materials 1a and 1b completely, or temporarily bonded thereto lightly for ensuring the convenience of a work, thereby being erected in such a state as floating. In other words, only the part of the fabric net 3 at both sides of the long-sized thin plate 2 is jointed to the panel type wall materials 1a and 1b, and the thin plate 2 and the panel type wall materials 1b and 1b are not jointed to one another, or kept free. In this case, an elastic type is used as an adhesive 4 for bonding the fabric net 3 to the panel type wall materials 1a and 1b, so as to follow up the dislocation, strain, the motion and displacement deformation of a panel such as a wall material, and prevent the occurrence of a crack on the joint part and the panel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint between a panel-like wall material and a covering material for a hole portion formed in the wall material, a joint structure, and a joint covering method. It is.

[0002]

2. Description of the Related Art Generally, joints of a panel-like wall material are filled with a putty and a sealing material and coated.
The sealing causes shrinkage or the like when hardened, the joints are depressed, and it is difficult to obtain a uniform finish on the entire wall surface.
Putty and sealing have the above problems,
Recently, as a joint treatment material, a tape-like material in which a material such as paper, cloth, mesh, or the like is formed in an elongated shape is used, and a material covering the joints between adjacent panels in a bridge shape to cover the surface joint of the wall material has been proposed. (Japanese Patent Publication No. 4-47088).
However, when this joint treatment material is used, after applying a paint or the like to the wall surface and attaching a tape-like material, the member may be sagged due to expansion and contraction due to a temperature change, or the wall material may be damaged by an earthquake or the like. There is a drawback that wrinkles and cracks are formed in these tape-shaped materials due to variations such as bending and displacement.

[0003] Further, when a joint treatment material having inelasticity such as mortar is used, shrinkage or the like is small, but deformation of a wall material due to vibration, earthquake, or the like cannot be absorbed. The material could be destroyed. Furthermore, joint eradicating tapes that follow a deformation of a wall material and are made of a composite of a metal plate such as a stainless steel strip and a woven fabric of glass and aramid fibers have been developed. However, this tape requires time and effort to cut a metal plate with scissors or a knife when cutting a long joint covering material into a predetermined length, and the metal plate has a large specific gravity and is heavy. In addition, there is a problem in workability when coating a long joint at the time of on-site construction. Further, there is a problem that the stainless steel part is hardly compatible with the paint, and the coefficient of thermal expansion is hardly the same as the coefficient of thermal expansion of the paint, so that the paint is easily peeled off and the cost is high.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to prevent a joint of a wall from following the vibration, displacement, distortion, and deformation of a panel such as a wall material, so that the joint and the panel do not crack.
A joint covering material and a joint covering method capable of eliminating added joints or depressions between panels of a wall material or the like or a hole formed in the wall material, which have a high-grade design, and can increase added value. To provide.

[0005]

Means for Solving the Problems The inventor of the present invention has made intensive studies to achieve the above object, and as a result, has reached the present invention. That is, the present invention is characterized in that, in a joint covering material in which a thin plate is joined to a fiber net, the thin plate is made of a resin thin plate, and the fiber net is bordered around the resin thin plate as a margin for glue. A joint covering material, wherein the joint portion of the adjacent panel-like wall material is closed at the resin sheet portion of the joint covering material in which the resin sheet is adhered to the fiber net, and the fiber around the outer edge of the resin sheet. The joint structure is characterized in that the resin thin plate and the panel-like wall material are adhered to the panel-like wall material only by the margin of the net and the resin thin plate and the panel-like wall material are free, and further, the resin thin plate is bonded to the fiber net. The joint portion of the adjacent panel-like wall material is closed with the resin thin plate portion of the covering material, and the elastic adhesive is applied only to the glue allowance of the fiber net around the outer edge of the resin thin plate and adhered to the panel-like wall material,
A joint covering method characterized in that a resin thin plate and a panel-like wall material are formed in a free structure.

Hereinafter, the joint covering material, joint structure and joint covering method of the present invention will be described in detail with reference to FIG. 1 showing an example of the joint structure of an ALC panel. As schematically shown in FIG. 1, a box for inserting a sealing material and a backup material is provided in the panel-like wall materials 1a and 1b along an edge serving as an abutting portion 8 with an adjacent panel-like wall material. A joint pocket portion 9, a chamfered portion 10, and a step 12 of a fiber net storage portion provided with a fiber net storage portion 11 in a plane parallel to the panel surface are formed. The box joint pocket portion is filled with a backup material 7 and a sealing material 6.

[0007] The joint covering material of the present invention comprises a resin thin plate 2 and a fiber net 3. The resin thin plate 2 is installed so as to close the joint that has been subjected to the sealing treatment. The resin thin plate (hereinafter simply referred to as a thin plate) may be a flat plate or a mesh, and the shape is not particularly limited, and may be a long shape, a square, or a circle according to the shape of the joint. When covering the joint between the long ALC panels, the long shape is preferable.

Examples of the material of the thin plate used for the joint covering material of the present invention include thermosetting resins (epoxy resin, resorcinol resin, guanamine resin, diallyl phthalate resin, unsaturated polyester resin, epoxy acrylate (vinyl ester) resin) , Furan resin, polyimide resin, polyoxybenzoyl resin, polyurethane resin, maleic resin, melamine resin, urea resin, phenol resin, silicone resin, thermosetting acrylic resin, etc.), thermoplastic resin (polyamide, polyacetal, polypropylene, polycarbonate, Polyetheretherketone,
Polyether sulfone, polybutylene terephthalate, polyphenylene sulfide, polyamide imide,
Plate-like or sheet-like materials such as polystyrene, acrylonitrile-butadiene-styrene, and polyethylene. These resins may be used alone or in combination of two or more.

The thin plate used for the joint covering material of the present invention may be one or two kinds of fibrous glass, carbon, boron, alumina, graphite, potassium titanate, silica, aramid, aromatic polyester, ceramic, metal and the like. Mesh-shaped materials such as knitted, braided, woven, etc. can also be used. In particular, glass, carbon, aramid or the like that is strong in tension is preferable, and when the thin plate is long, it is preferable that the thin plate is used at right angles to the longitudinal direction.

[0010] For example, in the case of a woven fabric, a thin plate made of a mesh-like sheet, even if the warp and weft are the same fiber,
Even if the warp and weft are different, every other, every two,
They may be used as a mixture, such as alternating two or mixing one into several. Further, the thin plate used in the present invention is a thin plate in which one or more of the above resins are combined with the mesh-like one of the fibers, and one or more of the above resins and one or more of the above fibers In particular, the FRP thin plate is particularly preferable in terms of performance such as lightness and waist strength.

The thin plate used in the present invention preferably has a thickness of 30 to 500 microns. 30
When the thickness is less than micron, the thin plate has no rigidity, it is difficult to maintain the flatness, and the workability is deteriorated. Also, if the thickness is
If the thickness is 500 microns or more, a step occurs on the joint surface of the panel-like wall material, and it is difficult to obtain a uniform finish of the entire wall surface, which is not preferable.

More preferably, the thickness of the sheet is less than 300 microns. When the thickness is 300 microns or less, the thin plate can be rolled small, and it is not bulky at the time of storage and transportation, so that workability is good. The thin plate has a waist strength (F), that is, a value (F = G × d ³ ) represented by the product of the tensile modulus (G) and the cube of the thin plate thickness (d) (F = G × d ³ ) is 1 kgf or more. Is preferred. More preferably, it is 5 kgf or more. 1kg
If it is less than f, the thin plate has no stiffness and is difficult to handle during construction.

The fiber net 3 used in the present invention is a knit, a woven fabric, a braid or the like. Examples of the material of the fiber net used in the present invention include glass, carbon, boron, alumina, graphite, potassium titanate, silica, aramid, aromatic polyester, ceramic, metal, polyethylene, polypropylene, and nylon. Seed or
It consists of a mesh-like coarse knit, braid, and woven fabric combining several types of fibers. Among them, glass, carbon, aramid and the like are preferable, and when the thin plate is long, it is preferable that the thin plate is used at right angles to the longitudinal direction.

It is preferable that the fiber net has been filled with an adhesive substance such as resin, rubber, and starch. The structure is such that the intersection of the fibers does not shift due to handling and adhesiveness. Here, the filling treatment refers to bonding the entangled portion of the fiber yarn and the yarn by immersing or spraying in an aqueous solution in which the adhesive substance is dissolved and dispersed. The fiber net may be attached and integrated from above the thin plate so as to cover the thin plate, or may be attached only to the end portion of the thin plate. Further, when the thin plate is long, the fiber net may be integrated with the long thin plate, and may be provided on both sides of the long thin plate.

The fineness of the mesh of the fiber net used in the present invention is preferably from 2.5 to 50 / inch. In the case of less than 2.5 / inch, when the fiber net is bonded to the wall material panel with an adhesive, the number of bonded portions is reduced, and the holding power of the fiber net to the panel such as the wall material is weakened. Also, if it is more than 50 lines / inch,
The adhesive is less likely to penetrate the fiber net, resulting in poor workability, resulting in poor adhesiveness.

The thickness of the yarn of the fiber net is preferably from 0.03 mm to 0.5 mm in the thickness direction of the net. If the thickness is 0.03 mm or less, the strength of the yarn is weak and 0.5 mm
If the thickness is larger, a step is formed on a panel such as a wall material, which affects a uniform finish of the entire wall surface. The fiber net used in the present invention preferably has a yarn count of 1 TEX to 300 TEX in terms of yarn thickness. If it is less than 1 TEX, the strength is weak, and if it is thicker than 300 TEX, a step is generated on the surface of the wall material or the like, which affects the uniform finish of the entire wall surface. Particularly preferred is 5TEX or more and 100 or more.
It is less than TEX number. Also, if the thickness of the same thread,
It is preferable that the yarn cross-section is flatter than circular, because it can be made thinner at the same tensile modulus.

According to the joint covering method of the present invention, only the fiber net 3 is bonded to the panel-like wall materials 1a and 1b, and the thin plate is not bonded to the panel-like wall material at all, or is only temporarily lightly bonded for construction. If it is only in contact with the panel-like wall material and emphasized strongly, it should be installed in a floating state. In the case of FIG. 1, only the portions of the fiber nets 3 on both sides of the long thin plate 2 are joined to the panel-like wall material, and the thin plate and the panel-like wall material are not joined but installed free.

According to the joint covering method of the present invention, the adhesive 4 for adhering the fiber net to the panel-like wall material includes epoxy, silicone, modified silicone, polysulfide, and the like.
Adhesives such as polyurethane and denatured polysulfide can be used, but the displacement, distortion, movement,
It must be an elastic adhesive to follow the displacement deformation and not to crack the joints and panels.

The panel-like wall material to which the construction method using the joint covering material of the present invention can be applied is not limited as long as it has a portion where panels are joined on an outer wall, an inner wall, or the like. Can also be applied. Examples include lightweight cellular concrete panels, PC panels, RC panels, gypsum boards, cement mortars, concrete blocks, wood wool cement boards, wood chip cement board slate boards, calcium silicate boards, and other materials such as side materials.

The panel-like wall material to which the joint covering material of the present invention is applied does not have a step on the panel when a long thin plate and a fiber net are installed, and the entire wall surface has a uniform finish. Next, as shown in FIG.
It is preferable that a and b have a structure in which the fiber net receiving portion 11 has a flat portion and a fiber net receiving portion 11 with a step corresponding to the thickness of the fiber net 3. However, even if a thin plate and a fiber net are provided, if the entire wall surface has a uniform finish, the step 12 may not be provided.

In order to improve the adhesiveness of the adhesive for bonding the fiber net to the panel-like wall material, the fiber net receiving portion 11 of the panel-like wall material is provided with a primer 5
Is preferably applied. The sealing material to be filled in the box joint pocket is ALC.
In the case of a joint structure of a panel, any material having a low / medium modulus may be used. For example, silicone-based, denatured silicone-based, polysulfide-based, polyurethane-based,
A modified polysulfide-based sealing material or the like is used, but in the case of a panel-like wall material other than the ALC panel, there is no particular preference.

According to the joint covering method of the present invention, only the fiber net 3 is adhered to the panel-like wall material to form the panel-like wall material 1.
a, 1b Indirectly installing long thin plates on the panel, the fiber net adheres to the panel-like wall material with an adhesive to prevent the displacement, distortion, vibration, movement, etc. of the wall material due to vibration, earthquake, etc. It is possible to absorb at the portion where the panel is formed, and it is possible to eliminate the possibility that the long thin plate is peeled off from the panel-like wall material or the panel-like wall material is broken.

When the thin plate is made of resin or FRP, the work of cutting with scissors or a knife is simpler and less labor intensive than metal. Further, when the thin plate is made of resin or FRP, it is lighter than metal, so that the work is easy, and especially when long joints are treated, workability is remarkably improved. Also, it has good compatibility with resin paints, does not repel paints easily, and is easy for post-surface treatment. Furthermore, the thin plate of resin or FRP
It does not rust like metal and is inexpensive.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION

[0025]

EXAMPLE 1 As a thin plate, a glass cloth having a warp density of 42 yarns / inch and a weft density of 32 yarns / inch, a thickness of 165 μm, was impregnated with epoxy resin, and was 200 μm thick and 50 m wide.
m and a length of 3 m were prepared. Next, as a fiber net, 33.7 TEX-count glass fiber was used for the warp,
Aramid fiber of 44.4 TEX count as weft and 67.
5 TEX count glass fiber alternately woven, thickness 12
A long joint having a length of 0 μm, a thickness of 200 μm, a width of 70 mm, and a length of 3 m was used, and the above-mentioned thin plate was bonded to the center of the long width to prepare a joint covering material.

As the panel-like wall material, an ALC panel (ALC for Hebel wall manufactured by Asahi Kasei Kogyo Co., Ltd.) was used.
The width of 13 is set at the joint end of the two ALC panels
mm and a depth of 300 μm. With the thin plate of the joint covering material facing the joint, the center of the thin plate is aligned with the center of the joint, and the elastic epoxy resin is applied only to the 10 mm net portion protruding around the thin plate. And glued to the wall material.

Next, an elastic paint was applied to the surface to obtain a wall surface having a uniform finish over the entire wall surface and having no visible joint portion. Even when the joints were given a displacement angle of 1/60 by the method specified in JIS A1414, the joints followed the deformation, and after releasing the displacement, no abnormality was observed.

[0028]

According to the joint covering method using the joint covering material of the present invention, the joint between the panels such as the panel-like wall material or the seam or the dent of the hole formed in the wall material is eliminated, and the sense of quality in the design is improved. In addition to increasing the added value, it follows the displacement, distortion, movement, and deformation of the panel-like wall material, and the joint and the panel-like wall material do not crack. Good, cheap and excellent.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view schematically showing a joint part of an embodiment according to the present invention.

[Explanation of symbols]

 1a Panel-shaped wall material 1b Panel-shaped wall material 2 Long thin plate 3 Fiber net 4 Adhesive 5 Primer 6 Sealing material 7 Backup material 8 Joint buttocks 9 Box joint pocket 10 Chamfer 11 Flat surface of fiber net receiving 12 Steps in fiber net storage

Claims (3)

[Claims] 1. A joint covering material in which a thin plate is joined to a fiber net, wherein the thin plate is formed of a resin thin plate, and the fiber net is bordered around a peripheral portion of the resin thin plate as a margin for glue. Coating material. 2. The joint portion of the panel covering material according to claim 1, wherein the joint portion of the adjacent panel-like wall material is closed by the portion of the resin thin plate, and the panel-like wall is formed only by the glue allowance of the fiber net around the outer edge of the resin thin plate. A joint structure characterized by being adhered to a material and free of a resin thin plate and a panel-like wall material. 3. A joint portion of an adjacent panel-like wall material is closed by a portion of the resin thin plate of the joint covering material in which the resin thin plate is adhered to the fiber net, and only a margin of the fiber net around the outer edge of the resin thin plate is closed. A joint covering method, characterized in that an elastic adhesive is applied and adhered to a panel-like wall material, so that the resin thin plate and the panel-like wall material have a free structure.