JPH0447088B2 - - Google Patents

Description

[Detailed description of the invention] 〔Technical field〕 The present invention relates to a joint structure of an exterior wall panel.

[Background technology]

The structure of the joint structure of a conventional exterior wall panel will be explained.

FIGS. 5a to 5d sequentially illustrate conventional construction work at joints between adjacent exterior wall panels.

The outer wall panels 1, 1' each consist of crosspieces 2, 2' and sheathing materials 3, 3'. 2 located adjacent to each other
A joint portion 4 is formed between the outer wall panels 1, 1'. Construction work will be carried out in the following order.

First, as shown in FIG.
2, and apply primer to the side end surfaces 3a, 3a' of the joint portion 4 using a brush or the like.

Next, as shown in FIG. 4b, a sealant (sealant) 6 is filled into the joint portion 4 using a sealant gun (not shown), and then leveled with a spatula or the like.

After that, the curing tape 52 is peeled off. Then, as shown in FIG. 4c, only the joint portion 4 is filled with the sealant 6.

After filling the sealant 6, leave it as it is for a certain period of time (for example, about one day) to dry the sealant, and then, as shown in FIG. Then, a cosmetic coating 7 is formed.

The joint structure of the exterior wall panel completed in this manner requires time for the sealant 6 filled in the joint portions 4 to dry, and most of the work in each step is done by hand, making construction time-consuming and labor-intensive. Another problem was that the paint layer 7 on top of the sealant 6 tends to crack after application.

[Purpose of the invention]

In view of the above-mentioned circumstances, this invention is easy to perform and does not take much time (in other words, has excellent workability), and the paint layer at the joints is damaged (cracks, etc.).
To provide a durable joint structure for an exterior wall panel that is difficult to apply, has a good finish on the paint layer, and has excellent waterproof properties.

[Disclosure of the invention]

In order to achieve the above-mentioned object, the present invention includes a long board material having rigidity and waterproofness, which is arranged along the longitudinal direction of the joint part of adjacent exterior wall panels so as to close the joint part. The elongated board material has protrusions provided along the longitudinal direction on the back surface thereof, which are fitted into the joints, and is attached to the surfaces of both exterior wall panels using an adhesive layer provided in advance on both ends of the elongated board material. In addition, a putty layer is provided on both sides of this elongated board material to smooth out the level difference between the surface of the elongated board material and the surface of the exterior wall panel, and a reticulated sheet is provided on the surface of this elongated board material. joints of an exterior wall panel to which a body is attached, both sides of the net-like sheet body are embedded in the putty layer, and a paint layer is formed to cover the surface of the exterior wall panel from above the net-like sheet body. The structure is the gist.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The joint structure of an exterior wall panel according to the present invention (hereinafter simply referred to as "joint structure") will be described in detail below with reference to drawings showing one embodiment thereof.

Figures 1a and 1b show an example of the basic configuration of the joint structure according to the present invention, where Figure a shows its horizontal plane, and Figure b shows an enlarged cross section around the long plate material in Figure A. show. Fig. 2 shows the appearance of the joints and the long board material, etc., viewed from an angle.

It includes the outer wall panels 11, 11' having this joint structure, a long plate material 16 that closes the joint portion 15, and a decorative coating layer 20. The outer wall panel 11 is
The exterior wall panel 11' consists of an exterior material 12, an interior material 13, and a crosspiece 14.
3' and a crosspiece 14'.

The long plate material 16 is made of metal (aluminum material, stainless steel material, etc.) or plastic (PVC resin, etc.)
Made of materials that are rigid and waterproof. The surface of the elongated plate material 16 may be previously subjected to a treatment to increase the adhesive force with the paint layer 20. That is, an epoxy, acrylic, or urethane coating agent is applied in advance to the surface of the long plate material 16, and as shown in FIG.
1 may be formed.

Adhesive tapes 18, 18 for pasting the elongated plate material 16 are provided in advance on both sides of the back surface of the elongated plate material 16. The adhesive tape 18 is a double-sided adhesive tape having adhesive layers 18b and 18c on both sides of a base material 18a. Acrylic adhesive is preferable because it has strong adhesive strength and is waterproof.

Furthermore, the adhesive tape 1 on the back side of the long plate material 16 is
Between 8 and 18 is a protrusion 1 that fits into the joint 15 which also serves as a guide when pasting the long board material.
7 are provided in advance along the longitudinal direction. The protrusions 17 are made of, for example, plastic foam, and are attached to the elongated plate 16 by an appropriate method such as adhesive or adhesive. The adhesive tape 18 may be applied to the entire back surface of the elongated plate 16, and the convex strips 17 may be adhered thereto.

As described above, in the joint structure of the present invention, an adhesive layer is preliminarily provided on both end sides along the longitudinal direction on the back side of a long plate material having rigidity and waterproofness, and a longitudinal direction is provided between both adhesive layers. As shown in Fig. 2, a long plate material with protrusions provided in advance along the
The elongated plate material 16 is attached so as to close the joint part 15 while guiding it by fitting the protrusion 177 into the joint part 15 (the protrusion 17 serves as a guide). The elongated plate material 16 is adhered by an adhesive layer 18c. In this case, only the adhesive layer may be provided in advance on the back surface of the elongated plate material 16 without the base material 18a.

Next, as shown in FIG. 3, before forming the coating layer 20, adhesive-coated cheesecloth (mesh sheet) 23 is pasted on the strips of the long board 16 (along the longitudinal direction, of course). Place, then putty layer 19, 19
is provided so as to embed the end of the cheesecloth (net-like sheet body) 23, and then a coating layer 20 is formed so as to cover the surfaces of the exterior materials 12, 12' and the cheesecloth (net-like sheet body) 23. Therefore, paint layer 2
The adhesive strength of 0 becomes stronger, and the effect of reinforcing the joint area also appears. In this way, since the cheesecloth 23 is applied, the film 21 shown in FIG. 1 may be omitted.

According to the joint structure described above, the construction work at the site is not only as simple as pasting long boards, providing a mesh sheet and a putty layer, and forming a paint layer, but also Since there is no difficult sealant filling process and no time-consuming drying process, the joint structure can be completed in a short time because the work can be performed continuously. moreover,
What closes the joints is rigid, and
It is a long board material that is waterproof. The long board material itself is waterproof, and since the joints are widely covered, moisture does not easily enter, and the waterproofness is sufficient. It has a sufficiently sturdy joint structure consisting of a rigid long board and a mesh sheet whose ends are fixed with a putty layer. The paint layer is also difficult to damage because of the rigid long plate material and net-like sheet, and the putty layer provides a beautiful finish.

Note that although the protrusions were provided over the entire length of the elongated plate material, they may be provided partially.
Of course, the outer wall panel is not limited to the structure of the embodiment. For example, it may be one without interior material.

〔Effect of the invention〕

This invention is highly practical as it can achieve the following effects all at once by having the above configuration.

Effects During construction, the work is easy and does not take much time, and the workability is very good.

This is because the process involves simply pasting together the long plates using the convex shapes as guides, then pasting the reticulated sheet and putty, and there is no sealant filling process or long filling drying process. be.

Effect: Excellent waterproofness.

This is because the joints are widely covered with waterproof long board materials.

Effect The finish of the paint layer is beautiful.

This is because the end steps of the elongated plate material are smoothed with putty, and the surface of the coating layer is not streaked by the end steps.

Effect: The paint layer is less likely to be damaged.

This is because the long board material is rigid, the paint layer formed on it is always in a stable state, and the mesh sheet is interposed between the long board material and the paint layer. be.

Effect: Durable joint structure.

This is because the joints are covered with rigid board materials.
Moreover, the ends of the net-like sheet body attached to the surface of the plate material are fixed to the putty layer, so that the joints are reinforced.

[Brief explanation of the drawing]

Figures 1a and 1b show an example of a basic configuration of a joint structure according to the present invention, where Figure a is a horizontal sectional view thereof, Figure b is an enlarged sectional view around a long plate material in Figure A, Fig. 2 is an external perspective view of the joint portion and long plate material, etc. Fig. 3 is a sectional view showing a detailed configuration example of the joint structure of the present invention, Figs. 4 a to d
These are cross-sectional views sequentially illustrating conventional construction work at joints between adjacent exterior wall panels. 11, 11'...Outer wall panel, 15...Joint part,
16... Long plate material, 17... Convex strip, 18... Adhesive tape, 19... Putty layer, 20... Paint layer.

Claims (1)

[Claims] 1 A rigid and waterproof long board is placed along the longitudinal direction of the joint between adjacent exterior wall panels so as to close the joint, and this long board has a long board on the back side. A protruding strip provided along the direction is fitted into the joint portion, and is attached to the surfaces of both exterior wall panels with an adhesive layer provided in advance on both ends thereof, and
A putty layer is provided on both sides of this elongated board material to level the difference in level between the surface of the elongated board material and the surface of the outer wall panel, and a net-like sheet body is adhered to the surface of this elongated board material, A joint structure for an exterior wall panel, wherein both sides of the net-like sheet body are embedded in the putty layer, and a paint layer is formed to cover the surface of the exterior wall panel from above the net-like sheet body.