JP3176487B2 - Exterior wall seam treatment material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer wall board jointing material mainly bonded between adjacent outer wall boards of a building or the like.

[0002]

2. Description of the Related Art FIG. 3 shows an example of such a conventional type (see Japanese Patent Publication No. 2-13702). In such a case, the adjacent outer wall board 1
A tape 13 is adhered so as to cover the gap 12 between 1 and 11,
A cold gauze 14 wider than the tape 13 is stretched over the tape 13, and an elastic sealing material 15 is applied in a belt shape over the cold gauze 14 over a larger area. Thereafter, the exterior coating film layer 16 is applied over the entire outer wall board 11.

[0003]

However, in such a conventional example, in order to prevent the occurrence of cracks, a cold gauze 14 is adhered and then an elastic sealing material 15 is further added.
, And the workability was not good.

[0004] For this reason, the tape 1 which has been subjected to reinforcement coating in advance.
3, an adhesive layer is formed on the back surface, and between the portion of the adhesive layer adhered to the edge 11a of one outer wall board 11 and the portion adhered to the edge 11a of the other outer wall board 11 There has been proposed a device in which a certain interval is provided to prevent the occurrence of cracks as an extension allowance.

[0005] However, if a certain interval is provided in the adhesive layer as described above, the portion of the tape 13 to which the reinforcing coating has been applied expands during drying, and the central portion of the tape 13 swells outward. This tendency is particularly remarkable when a drying step using a drying furnace or the like is provided in a subsequent step.

Accordingly, the present invention is to provide an outer wall board joint treatment material which prevents cracks and the like caused by movement of joints and does not swell outward even when drying without an adhesive layer. It is an issue.

[0007]

In order to solve the above-mentioned problems, according to the present invention, an adhesive is adhered to opposing edges of adjacent outer wall boards so as to straddle both edges, and is coated on a substrate. An outer wall board joint treatment material, wherein a fixed gap is provided between a portion of the adhesive bonded to one end of the outer wall board and a portion bonded to the end of the other outer wall board. Along with the gap portion of the base material, an outer wall board seam treatment material provided with an adhesive material that adheres to the edge with a weaker adhesive force than the adhesive and that peels off according to joint movement. And

[0008]

According to this structure, the adhesive provided on the base material of the outer wall board seam treatment material has a smaller gap between both ends of the outer wall board with a lower adhesive strength than the adhesive. Stick to the part. For this reason, even if the coating is applied on the base material and the base material expands during drying, the base material adheres to the edge of the outer wall board due to the adhesive force of the adhesive material and swells outward. Is suppressed.

Further, since this adhesive material is adhered to the edge with a weaker adhesive force than the adhesive, it is peeled off according to the movement of the joint. For this reason, a fixed interval between the portion bonded to the edge of the one outer wall board and the portion bonded to the edge of the other outer wall board acts as an extension allowance, thereby preventing the occurrence of cracks. be able to.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

FIGS. 1 and 2 show one embodiment of the present invention. For the same or equivalent members as before,
The description is given with the same reference numerals.

First, the structure will be described. In the drawing, reference numeral 1 denotes opposite edge portions 11a, 11a of an adjacent outer wall board 11.
The outer wall board seam treatment material is bonded to both end edges 11a, 11a.

As shown in FIG. 1, the outer wall board seam treatment material 1 has a band shape having a constant width L2 (about 5 to 20 cm), and is a double-sided release paper 2, an adhesive 3, an acrylic resin material 4 as an adhesive material. , A non-woven sheet 5 as a base material, a reinforcing coating 6, and the like are sequentially laminated.

A transparent material such as acrylic rubber, polychloroprene rubber, polyurethane rubber or the like is used as a material of the reinforcing coating 6, and a material of the sheet 6 is nylon, polyester, rayon, polyacrylate, polypropylene, vinylon. , Polyethylene, polyurethane, cupra (thickness of about 100 to 200 μm, weight of about 15 g / m ² ) and the like are used.

The acrylic resin material 4 adheres to the end portions 11a, 11a with a weaker adhesive force than the adhesive 3, and peels off according to the joint movement between the end portions 11a, 11a. It has a certain degree of tackiness. The acrylic resin material 4 has a thickness of about 30 to 40 μm and is provided over the entire surface of the sheet 6 along the rear surface.

Further, the adhesive 3 is made of a material such as vinyl chloride, polyvinyl acetate, phenol resin, urea / formaldehyde resin, epoxy resin, acrylic resin and has a thickness of about 20 to 50 μm. I have.

The adhesive 3 comprises two adhesive layers 3 a, which are applied to the back surface of the acrylic resin material 4 along the longitudinal direction.
3a.

The one adhesive layer 3a is bonded to the edge 11a of one outer wall board 11, and the other adhesive layer 3a is bonded to the edge 11a of the other outer wall board 11. I have to. The two adhesive layers 3a, 3a are provided with a gap 3b having a constant width L1 (about 10 to 20 mm).

The reinforcing coating 6 is mainly composed of an acrylic coating, has a curved surface, and has a thickness of about 100 to 200 μm at the thickest portion at the approximate center. In the drawings, the ratio of the thickness to the width is larger than the width to facilitate understanding.

Next, the operation of the outer wall board seam treating material 1 having such a configuration will be described.

First, the outer wall boards 11, 11 are subjected to a base treatment, and then a primer is applied, and fixed to a wooden bar of a building (not shown) with nails or the like. Then, the edge portions 11 of the outer wall boards 11
The outer wall board joint processing material 1 is stuck so as to straddle a and 11a. In this case, the double-sided release paper 2 is peeled off, the adhesive layers 3a, 3a are respectively bonded to the edge portions 11a, 11a, and the central portion in the width direction of the sheet 5 is pressed.
The acrylic resin material 4 is adhered to the edge portions 11a. Thereafter, overcoating and drying are repeated from above, and the process is completed. For this reason, even if the coating is applied on the sheet 5 and the sheet 5 expands during drying, the sheet 5
Is adhered to the edge portions 11a of the outer wall boards 11, 11 due to the adhesive force of the acrylic resin material 4, and bulging outward is suppressed. Therefore, as shown in FIG. 2, the surface of the outer wall board joint treatment material 1 can be maintained in a substantially planar state without bulging outward.

Further, this acrylic resin material 4 is
Since it adheres to the edge portions 11a, 11a with a weaker adhesive force, it peels off according to the movement of the joint. For this reason,
A certain distance between a portion bonded to the edge 11a of the one outer wall board 11 and a portion bonded to the edge 11a of the other outer wall board 11 acts as an elongation allowance. The stress generated in the material 1 can be relaxed to prevent the occurrence of cracks.

Further, in this embodiment, since the surface of the reinforcing coating 6 is formed so as to exhibit a curved shape, when an overcoat is applied from above, the portion of the reinforcing coating 6 appears as a large step. And the appearance quality is improved.

Although the embodiment of the present invention has been described with reference to the drawings, the specific configuration is not limited to this embodiment, and there are design changes and the like within a range not departing from the gist of the present invention. Even this is included in the present invention. For example, in the above-described embodiment, the acrylic resin material 4 provided on substantially the entire surface along the back surface of the sheet 5 is used as the adhesive material. However, the present invention is not limited to this. For example, only the gap 3b on the back surface of the sheet 5 is used. Needless to say, an adhesive layer may be applied which is thinner than the adhesive layers 3a, 3a.

In this embodiment, the acrylic resin material 4 is used as the adhesive material. However, the present invention is not limited to this. If the adhesive material has a weaker adhesive force than the adhesive 3, another resin may be used. An adhesive made of a material or the like may be used.

[0026]

As described above, according to the present invention, even when a coating is applied on a base material and the base material expands during drying, the base material is kept on the outer wall by the adhesive force of the adhesive material. Adhering to the edge of the board suppresses outward bulging.

Further, the adhesive material is peeled off in accordance with the movement of the joint, and a portion between the portion bonded to the edge of one outer wall board and the portion bonded to the edge of the other outer wall board is formed. The constant interval acts as an elongation allowance to prevent the occurrence of cracks.

Therefore, the surface of the outer wall board seam treatment material is not bulged outward while preventing the occurrence of cracks.
This has a practically useful effect that it can be maintained in a substantially planar state.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an outer wall board joint treatment material according to an embodiment of the present invention, showing a main part after the outer wall board is installed on an outer wall.

FIG. 2 is a cross-sectional view illustrating an outer wall board joint treatment material according to an embodiment of the present invention.

FIG. 3 is a sectional view showing a conventional example.

[Explanation of symbols]

 1 Exterior wall seam treatment material 3 Adhesive 3b Gap 4 Acrylic resin material (adhesive material) 5 Sheet (base material) 6 Reinforcement coating (painting) 11 Exterior wall board 11a Edge

Claims (1)

(57) [Claims] 1. An outer wall board seam treatment material which is adhered to opposing edge portions of adjacent outer wall boards so as to straddle both edge portions and applies a coating on a base material, wherein the adhesive Has a constant gap between the portion bonded to the end of one outer wall board and the portion bonded to the end of the other outer wall board, and at the gap portion of the base material,
An outer wall board joint treatment material, comprising: an adhesive material that adheres to the edge portion with an adhesive force weaker than the adhesive and that peels off in response to joint movement.