JP2869613B2 - Joint member and joint structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a member used for a finishing structure of an outer wall of a building and a member finished using the member.
And its use is in the architectural field.

[0002]

2. Description of the Related Art Conventionally, when a fixed-size panel such as an ALC board, an inorganic siding board, an asbestos cement board, a GRC board, or the like is used as a main component of an outer wall, the surface of the panel is made to look like a single wall or a large wall. Was very difficult. In the conventional method, a sealing material or the like is filled in a recess at a joint portion between the plates and leveled, and a finish coating material is coated with a base adjustment material or the like to make the water absorption uniform.

[0003]

In the conventional large-wall construction method, the work of adjusting the base including the sealing material is troublesome, and when the base moves, the force often appears concentrated at the joint. In some cases, cracks occurred on the surface. For this reason, there is a method disclosed in Japanese Patent Application Laid-Open No. Sho 60-175657 as a partial joint treatment method.
In this method, the material to be filled and covered in the joint is basically a wet material or requires much work. Further, the bonding agent coated on the joint portion is such that only the fiber woven fabric or the tape sandwiched therein expands, and it is unknown how much as a whole it expands. An object of the present invention is to provide a structure insulated at a joint portion or a rod-shaped joint member that can easily manufacture the joint structure.

[0004]

SUMMARY OF THE INVENTION A joint member useful in the present invention mainly comprises a filler for flattening a depression in the joint and a joint covering sheet which can be adhesively fixed to the surface of an exterior panel on both sides of the filler. In addition, release paper for covering the pressure-sensitive adhesive for improving the usability or a discarding member for giving a three-dimensional thickness to make the cross-sectional shape of the joint member rectangular is integrated.

In FIG. 2 of the drawings, an example of the joint member is shown in an external perspective view. In the figure, reference numeral 1 denotes a filler, 2 denotes a joint covering sheet, 3 denotes a release paper,
Is a discard type member. Hereinafter, the joint member will be described as an example.

[0006] The filler fills all the depressions at the joint or at least one third of the depth from the surface of the joint. Therefore, the cross-sectional shape is A
The shape is adapted to the shape of the joint of the LC plate or various siding plates. Examples include triangles, trapezoids, quadrangles, and the like. As the composition of the filler, plastic, rubber, or a foam thereof is used. Examples of plastic include polyethylene, polypropylene, polyvinyl chloride and their foams, and examples of rubber include natural rubber, urethane rubber, silicone rubber,
SBR, NBR, BR, CR, IIR and natural rubber,
There are SBR and NBR foams.

[0007] The joint covering sheet is largely divided into a pressure-sensitive adhesive layer and a fiber product layer. The pressure-sensitive adhesive layer and the textile layer are the same in planar size, and have a width equal to the joint width plus two widths to be attached to the exterior panel, and have a suitable fixed length or scroll. It is. The pressure-sensitive adhesive layer and the fiber product layer are generally in the form of a flat surface. However, a portion to be adhered to the surface of the exterior material is opened in a polka dot shape. It can also be formed linearly.

[0008] The pressure-sensitive adhesive layer is an intermediate layer for bonding the fiber product and the filler, and also has a role of bonding the fiber product to the exterior material on both sides of the joint groove. Adhesives used include rubber-based and resin-based adhesives. The composition of the adhesive is butyl rubber, recycled rubber, ethylene-vinyl acetate, vinyl acetate-acrylate, acrylate, or the like.
One having a methacrylate composition can be exemplified. A material obtained by adding a small amount of a filler and a pigment to this is also used.

The fibers constituting the fiber product layer include paper, and include non-woven fabric, woven fabric and synthetic paper. To prevent the adhesive from seeping out on the surface, the basis weight should be 40 g.
It is better to use the above. Fiber materials used for woven or nonwoven fabrics include polyester, vinylon, polyethylene, and nylon. Further, a material obtained by further applying a filler or a paint for filler to this fiber product can also be used. The growth of this textile is 20%
The above is effective for the movement of the joint.

The release paper covering the portion of the pressure-sensitive adhesive adhered to the exterior panel is used for improving the handling of the joint member of the present invention, and there is no release paper or release paper integrated with the cast member. Then, the adhesive adheres to other parts or other joint members. The material used for the release paper is a conventionally known material without any problem, and a surface which is easily processed on the side facing the adhesive is used. For release paper, kraft paper, rayon paper coated or infiltrated with silicone resin, paraffin, wax, etc., or paper laminated with polyethylene, polypropylene, deflon film or silicone resin, wax, etc. on the film A coated paper or the like is used.

The discarded member is used for simplifying the shape of the joint member as a whole or for facilitating release of the release paper. As the material, the material exemplified in the description of the filler can be used, and the same material is used for simplifying the production.
Also, as shown in FIG. 2, it is efficient to cut a material having a rectangular cross section according to the cross-sectional shape of the joint. Adhesives for integrating the discarded member with the release paper include nitrile-phenolic, vinyl-phenolic, phenolic-epoxy, epoxy, polyamide-epoxy, nitrile rubber, polybutadiene, acrylate, vinyl acetate- It is appropriately selected from those having a composition of an acrylate or the like. When the discarded member is not a foam, the side of the discarded member facing the adhesive can be treated with a release agent to replace the adhesive with release paper. In this case, silicone resin,
A paraffin, wax or the like is applied to form a release agent layer.

Now, the joint member having the above-described structure is referred to as AL.
The joint structure when used for a C plate or various siding plates will be described. FIG. 1 is a cross-sectional view when the joint member illustrated in FIG. 2 is attached to a joint of an ALC plate. In the figure, reference numeral 10 denotes a joint member excluding release paper and a cast member, reference numeral 20 denotes an ALC plate as a base, reference numeral 30 denotes a joint backup material, and reference numeral 40 denotes a sealing material. The joint member is fixed to the ALC plate with an adhesive. The filler in the joint member fills the joint in an insulated state without being fixed to the ALC plate, and flattens the outer wall surface.

When finishing is to be performed on the ground of the obtained wall surface having the joint structure, JIS A6 is applied to the finish coating material.
910 "Waterproof type multi-layer coating material" or JIS A6
No. 021 is excellent in terms of crack resistance. Of course, even if it does not pass the waterproof type multi-layer coating material or the like, it can be used as long as it has a stretched finish coating material. Further, a sheet-like finishing material for exterior may be used. Before painting such a finish coating material,
In order to make the water absorption or the color of the base of the joint part and other parts uniform, or to eliminate unevenness, the base adjustment material is also applied. The base adjustment material is a synthetic resin emulsion-based or polymer cement-based material.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment, an example in which joint members are created in advance is described.
I will.

First, in Example 1, a joint member was prepared.
The shape of the joint member is substantially the same as the shape of FIG. 2, the cross section of the filler is trapezoidal, the length of the upper and lower sides of the parallel trapezoid is 10 mm and 20 mm, and the height of the joint member thickness is 5 mm. The joint member had a fixed length of 70 cm. 40mm including the filler and the mold
A rectangular cross section of × 5 mm was used, and foamed polyethylene was used as a material. A butyl rubber sheet was used as the pressure-sensitive adhesive of the joint covering sheet, and the bonding surface with the filler was directly bonded. As the fiber product of the joint covering sheet, a polyester nonwoven fabric having a basis weight of 50 g, which was heat-bonded to the ridged pattern of the fabric, was used. The release paper integrated with the discarded member is made of kraft paper coated with silicone resin. Was.

The joint member was used for the outer wall surface of the building having the ALC structure. An integrated part of the discarded member and the release paper was peeled off from the joint member and attached to the joint part. After the joint portion was treated with the joint member, a polymer cement base adjusting material was applied by brush coating, and a finish coating material, a rubber wall (trade name) manufactured by Kikusui Chemical Industry Co., Ltd. was applied.

The method using the joint member according to the present invention and the method using a conventional sealing material to make it smooth and appear on a large wall are described below.
Comparison was made between construction speed and finish. As the groundwork, select a three-story house with S-build ALC board, select the west side and the east side where ALC board layout is the same, use the joint member according to the present invention on the west side, and use the ceiling on the east side. The material was smoothed.

As a result, the east side subjected to the sealing treatment is 1
The construction speed was 2 m / hour / person, but when the joint material according to the present invention was used, the construction speed was 50 m / hour / person and the construction speed was greatly improved. Also, the feeling of finish is almost the same,
Good finish.

In the reference example, joint processing was performed without manufacturing a joint member. The cross-sectional shape of the joint is shown in FIG. 3, and the filler has a width of 30 mm and a thickness of 1 according to the joint cross-section.
A rod made of expanded polyethylene having a length of 0 mm and a length of 1 m was used. The joint covering sheet is made of vinylon non-woven fabric and has a basis weight of 50 g.
A butyl rubber having a thickness of 1 mm was rolled together with release paper in a roll shape, and the roll was adhered, and a width of 5 cm was used.

In the construction, a filler is inserted into the joint portion of the ALC plate having the joint section of 3 cm × 1 cm,
Subsequently, the joint covering sheet was affixed to the ALC plate so as to have the same width on the left and right from the top of the filler. Finishing is a modern art stone (trade name) manufactured by Kikusui Chemical Industry Co., Ltd., a stone-like sheet for exterior, made of synthetic resin emulsion (epoxy-modified acrylic resin) -based adhesive.
It was pasted and finished using MA Bond E (trade name) manufactured by Kikusui Chemical Industry Co., Ltd.

JIS A1
414 assembled non-bearing panels were subjected to a deformability test by in-plane shear bending. As Comparative Example 2, an ALC plate having the above-mentioned joint section was filled with lightweight mortar, and modern art stone was attached and finished in the same manner as in Example 2.

As a result of the test, Comparative Example 2 filled with mortar
In the example 2, a minute crack was generated in the modern art stone at a deformation angle of 1/120 radian, but in the case of Example 2, no crack was generated even at a deformation angle of 1/60 radian.

[0023]

The following effects can be obtained by using the joint structure of the present invention. First, large wall surfaces, which were conventionally difficult or laborious, can be obtained relatively easily. Since the joint covering sheet has elasticity, the joint covering sheet follows the deformation of the base material, and by mitigating the deformation, cracks in the finish coating material are prevented. In addition, the large wall surface obtained when the base adjustment is performed has a uniform base, and thus has a finished surface without unevenness and without gloss unevenness due to a difference in suction. The joint member can perform the joint processing for obtaining such a finished surface with a simple construction.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an example of a finishing structure according to the present invention. A
Sectional drawing when the joint member is stuck on LC board.

FIG. 2 is an external perspective view of the joint member according to the embodiment.

FIG. 3 is an example of a finishing structure having a joint having a different sectional shape from that of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Filler 2 Joint covering sheet 3 Release paper 4 Discarded member 10 Joint member 20 ALC board 30 Backup material 40 Sealing material

Claims (2)

(57) [Claims] A joint section formed by an exterior panel of an outer wall.
1 in cross-section depth from the surface side of the joint
Plastic or rubber having a cross-sectional shape of / 3 or more
Or fillers of these foams and filler joints
Eye with adhesive layer to exterior panel adhered to the front side
The ground covering sheet is the main component, and the exterior of the joint covering sheet
Release paper or release paper and joints on the adhesive surface to the panel
Incorporating a discarded member for making the material into a rectangular cross section
Joint member composed of: 2. A joint between outer panels of an outer wall.
The filler and joint covering sheet excluding the discarded parts are integrated
The joint member according to claim 1 is inserted and adhered.
Joint structure characterized by being.