JPH09256495A - Waterproofing material for joint part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint part waterproofing material capable of ensuring a high waterproofing function for a joint part and at the same time, allowing the easy alignment of a plate material during the execution of a work. SOLUTION: A joint part waterproofing material 1 is laid across the reverse sides of both plate materials 10 and 10 along the joint part 20 thereof, and has a long-sized double-sided adhesive layer clamped with the plate material 10 and a substrate 30. In addition, both lengthwise sides of the material 1 are provided with foamed sheets 3 and 3, and the center part of the material 1 is projected toward the plate material 10. The material, when compressed, is deformable approximately to the same plane as the center part, and the surface at the side of the plate material is formed to be adhesive at the center part and non-adhesive at both sides.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint waterproofing material used for joints between plate materials used for outer walls of buildings.

[0002]

2. Description of the Related Art A joint waterproofing material used for a joint between plate materials used for an outer wall of a building is disclosed in, for example, Japanese Patent Laid-Open No. 5-222818. The joint waterproofing material described in the above publication is a long sheet material, and is stretched along the joints between the back surfaces of both plate materials, and is sandwiched and compressed by the plate material and a base material such as a wooden frame, The joints are waterproof. As the joint waterproof material, a foamed sheet with an adhesive or a butyl rubber adhesive sheet having a flexible double-sided adhesive is used, and a plate material and a base material due to the compression deformability and adhesiveness of the joint waterproof material. Is kept watertight.

[0003]

However, when a foam sheet is used as the conventional joint waterproofing material, if there is a step or the like in the base material, the gap between the base material and the plate material becomes large or small, and the foam sheet is formed. However, the water-tightness is deteriorated and the waterproof reliability cannot be sufficiently secured. Therefore, if the thickness of the foamed sheet is increased so that the foamed sheet is sufficiently compressed and deformed even in a step portion having a large gap, the foamed sheet has a large amount of compressive deformation in a small gap and is used as an outer wall due to residual strain. Warpage occurs on the plate material, which causes a problem in the appearance of the building.

When an adhesive sheet such as butyl rubber having double-sided adhesiveness is used as the conventional joint waterproofing material, when the outer wall plate is attached to the base material, the plate adheres to the adhesive sheet, resulting in a nail. There arises a problem that the plate materials cannot be aligned before the driving.

The present invention has been made in order to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a joint portion which is excellent in waterproofness of joint portion and at the same time easy to align a plate material during construction. Is to provide wood.

[0006]

The joint waterproofing member of the present invention is a long member which is bridged between the back surfaces of both plate members along the joints between the plate members and is sandwiched and compressed by the plate member and the base member. Both sides having a double-sided adhesiveness, the both sides along the longitudinal direction are made to be convex toward the plate material side from the central part, and when compressed, can be deformed into substantially the same surface as the central part, and the surface on the plate material side is ,
The central portion is an adhesive surface, and the both side portions are non-adhesive surfaces.

The joint waterproofing material of the present invention comprises a base sheet and
Foamed sheet, consisting of a double-sided pressure-sensitive adhesive sheet having a thickness smaller than the thickness of the foamed sheet, tackiness is imparted to the surface of the base material sheet on the side of the base material, the surface of the base material sheet on the side of the plate material, It is preferable that the foam sheets are attached to both sides along the longitudinal direction, and the double-sided pressure-sensitive adhesive sheet is attached to the base sheet between the foam sheets.

Further, the joint waterproofing material of the present invention comprises a foam sheet and a double-sided adhesive sheet, wherein the surface of the foam sheet on the side of the base material is provided with adhesiveness, and the surface of the foam sheet on the side of the plate material is provided. The double-sided adhesive sheet may be attached to the central portion along the longitudinal direction, and both side portions along the longitudinal direction may be convex toward the plate material side from the surface of the double-sided adhesive sheet in the central portion.

Further, the joint waterproofing material of the present invention comprises a foamed sheet and a double-sided adhesive sheet, and the plate material side surface of the double-sided adhesive sheet has both sides along the longitudinal direction smaller in thickness than the central part. The foamed sheet may be stepped, attached along both sides of the double-sided pressure-sensitive adhesive sheet, and may be convex toward the plate material side from the surface of the double-sided pressure-sensitive adhesive sheet in the central portion.

Furthermore, the joint waterproofing material of the present invention comprises a foamed sheet whose thickness becomes extremely thin when compressed, and a double-sided adhesive sheet. The sheet may be attached to both sides along the longitudinal direction.

(Operation) Since the joint waterproofing material of the present invention is long and has double-sided adhesiveness, it can be attached by adhering along the base material in advance.

Further, since the joint waterproofing member has both side portions along the longitudinal direction which are convex toward the plate material side from the central portion and the both side portions are non-adhesive surfaces, when the plate material is attached, the plate material is attached. Can be aligned while floating.

Furthermore, both sides along the longitudinal direction can be deformed into substantially the same plane as the central portion when compressed, and the central portion of the surface on the side of the plate is an adhesive surface, so that the plate is nailed. When pressed against the base material by striking etc., the joint waterproof material is attached so as to be flush with the back surface of the plate material, the back surface of the plate material contacts the central portion, and the back surface of the plate material and the base material become watertight,
Waterproof property can be secured. Further, since both side portions which are convex toward the plate member are deformed and attached to the same plane as the central portion, the watertightness is further improved.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a flexible sheet material is convenient for handling as a base material sheet constituting a joint waterproofing material. Examples of suitable base material sheets include thin synthetic rubber or synthetic resin sheets, non-woven fabrics such as natural fibers, synthetic fibers, glass fibers, or woven fabrics.

Further, a suitable foam sheet constituting the joint waterproofing material is a sheet-like foam formed by mixing gas into synthetic rubber or synthetic resin, and as a concrete foam sheet. , EPDM foamed sheets, polyethylene foamed sheets, and the like.

Further, the double-sided pressure-sensitive adhesive sheet constituting the joint waterproofing material is formed of a sheet-like pressure-sensitive adhesive material such as butyl rubber, or the both sides of the base sheet are coated with, for example, an acrylic pressure-sensitive adhesive or the like. It may be one.

An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 show an embodiment of the present invention, in which FIG. 1 is a sectional view showing a usage state of a joint waterproofing material, FIG.
3 is a perspective view of the joint portion waterproof material of FIG. 1, and FIG. 3 is a cross-sectional view showing a state of the joint portion waterproof material of FIG. 1 during construction. 4 to 6
[Fig. 3] is a cross-sectional view of a joint portion waterproof material, which are respectively different embodiments of the present invention.

First, an embodiment of the present invention will be described with reference to FIGS. The joint waterproof material 1 according to the present invention is a long sheet material having double-sided adhesiveness, and as shown in FIG. 1, both joints are formed along the joint portion 20 between the plate materials 10 and 10 which are outer wall materials. While being laid across the plate materials 10 and 10 backside,
It is sandwiched and compressed by the plate material 10 and the wooden base material 30.

As shown in FIG. 2, the joint waterproof material 1 is a base sheet 2 which is an EPDM rubber sheet having a thickness of 0.5 mm.
And a 3 mm-thick EPDM rubber foam sheet 3 and a 1 mm-thick butyl rubber double-sided adhesive sheet 4.

An adhesive layer 21 is formed on the surface of the base material sheet 2 of the joint waterproofing material 1 on the side of the base material 30, and the foam sheet 3, on the surface of the base material sheet 2 on the plate material side 10. 3 are attached to both sides along the longitudinal direction, and the double-sided adhesive sheet 4 is attached to the base sheet 2 between the foam sheets 3 and 3.

A foam sheet 3 having a thickness of 3 mm is formed on both sides of the joint waterproofing member 1 on the plate material 10 side in the longitudinal direction.
Since 3 is attached, the double-sided pressure-sensitive adhesive sheet 4 having a thickness of 1 mm is convex toward the plate material 10 side from the central portion where it is attached. When the foamed sheets 3 and 3 are compressed, they can be deformed into substantially the same surface as the double-sided adhesive sheet 4 in the central portion.

Next, the operation of the embodiment will be described while explaining the construction procedure of the joint portion waterproof material 1 of the present embodiment. First, the joint waterproof material 1 is attached to the base material 30. At this time, the joint waterproof material 1 has an adhesive material layer 21 on the surface of the base material 30 side.
Since it is formed, it is easy to attach the joint portion waterproof material 1 in advance along the base material 30 by adhesion.

Next, the plate material 10 is aligned with the base material 30 to which the joint waterproof material 1 is attached. At this time, as shown in FIG. 3, the joint portion waterproofing material 1 has both side portions along the longitudinal direction of the surface on the plate material 10 side that are made to be convex toward the plate material 10 side from the central portion and are substantially the same as the central portion when compressed. Since the foam sheets 3 and 3 are made non-adhesive so that they can be deformed to the surface, when the plate member 10 is attached, the plate member 10 can be aligned in a floating state.

Next, the plate material 10 is fixed with the nail 40 by pushing it into the base material 30. Then, the surface of the joint portion waterproof material 1 on the side of the plate material 10 is attached flush with the back surface of the plate material 10, and the back surface of the plate material 10 contacts the double-sided adhesive sheet 4 of the joint portion waterproof material 1; And base material 3
It is watertight between 0 and waterproof. Finally,
A joint material (not shown) is attached to the joint portion 20, and the construction is completed. Then, the waterproof property of the joint portion 20 can be further ensured.

Next, another embodiment of the present invention will be described with reference to FIGS.
It will be described based on. Joint waterproofing material 1 shown in FIGS.
All of a to 1c are used for the joint portion 20 shown in FIG. 1, parts different from the above embodiment are indicated by different reference numerals, same parts are indicated by the same reference numeral, and only different parts will be described. Description of the same reference numerals is omitted. Above joint waterproofing material 1
Each of a, 1b, and 1c has double-sided adhesiveness, and both side portions along the longitudinal direction of the surface on the plate material 10 side are made to be convex toward the plate material 10 side from the central portion and are compressed to the central portion. The surface on the side of the plate material 10 has an adhesive surface at the central portion and non-adhesive surfaces at the both side portions.

The joint waterproof material 1a shown in FIG. 4 is made of EPDM.
It comprises a foamed sheet 3a in which rubber is foamed and a double-sided adhesive sheet 4a made of butyl rubber, and an adhesive layer 5a is formed on the surface of the foamed sheet 3a on the side of the base material 30. The surface of the foamed sheet 3a on the plate material 10 side is
Both sides (thickness 4 mm) along the longitudinal direction are made thicker than the central portion (thickness 1.5 mm), and the double-sided adhesive sheet 4a having a thickness of 1 mm is attached to the central portion of the foamed sheet 3a.

The joint waterproof material 1b shown in FIG. 5 is made of EPDM.
It comprises a foamed sheet 3b in which rubber is foamed and a double-sided adhesive sheet 4b made of butyl rubber. The surface of the double-sided adhesive sheet 4b on the plate material 10 side is stepped so that both side portions (thickness 1 mm) along the longitudinal direction have a smaller thickness than the central portion (thickness 2 mm), and the foam sheet 3b (thickness 3 mm) is The double-sided pressure-sensitive adhesive sheet 4b is attached along both sides of which the thickness is 1 mm. Therefore, both sides of the joint portion waterproof material 1b have a thickness of 4 mm, which is thicker than the central portion having a thickness of 2 mm.

The joint waterproof member 1c shown in FIG. 6 comprises a foam sheet 3c and a double-sided adhesive sheet 4c. The foam sheet 3c is made to have a thickness of 1.5 mm, and EPDM rubber is foamed at a higher magnification than the foam sheets 3a or 3b of the above-mentioned embodiment, and the plate material 10 is not completely crushed by its own weight, but nailed. When the plate material 10 is pressed by the above, the thickness becomes extremely thin from 1.5 mm to nearly 0. The foam sheet 3c is attached to both side portions along the longitudinal direction of the double-sided pressure-sensitive adhesive sheet 4c formed of butyl rubber having a thickness of 1 mm. Both sides of the joint waterproofing member 1c are made to have a thickness of 2.5 mm by the foam sheet 3c and the double-sided adhesive sheet 4c, and are made thicker than the central portion having a thickness of 1 mm.

The construction method of the joint waterproofing members 1a to 1c shown above is performed in the same procedure as that of the above-mentioned embodiment, and the operation of the embodiment is also the same, so that the description thereof will be omitted.

[0030]

As described above, since the joint waterproofing material of the present invention is long and has double-sided adhesiveness, it can be attached by adhering to the base material in advance, which is convenient for construction. Is.

Further, since the joint waterproofing member has both side portions along the longitudinal direction that are convex toward the plate material side from the central portion, and both side portions are non-adhesive surfaces, when the plate material is attached, the plate material is not attached. Positioning can be performed in a floating state, which facilitates positioning of the plate material.

Furthermore, both side portions along the longitudinal direction are made deformable to be substantially flush with the central portion when compressed, and the central portion of the surface on the side of the plate material is an adhesive surface, so that the plate material is nailed. When pressed against the base material by striking etc., the joint waterproof material is attached so as to be flush with the back surface of the plate material, the back surface of the plate material contacts the central portion, and the back surface of the plate material and the base material become watertight,
Waterproof property can be secured. Further, since both side portions which are convex toward the plate member are deformed and attached to the same plane as the central portion, they serve as a secondary waterproof layer to further improve watertightness.

[0033]

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a usage state of a joint waterproofing member according to an embodiment of the present invention.

FIG. 2 is a perspective view of the joint portion waterproof material of FIG.

FIG. 3 is a cross-sectional view showing a state of the joint portion waterproof material of FIG. 1 during construction.

FIG. 4 is a cross-sectional view of a joint waterproofing member according to another embodiment of the present invention.

FIG. 5 is a cross-sectional view of a joint waterproofing member according to another embodiment of the present invention.

FIG. 6 is a cross-sectional view of a joint waterproofing member according to another embodiment of the present invention.

[Explanation of symbols]

 1, 1a, 1b, 1c Joint waterproofing material 2 Base material sheet 3, 3a, 3b, 3c Foaming sheet 4, 4a, 4b, 4c Double-sided adhesive sheet 10 Plate material 20 Joint portion 30 Base material

Claims (5)

[Claims] 1. A long joint waterproof material having double-sided adhesiveness, which is bridged between the back surfaces of both plate materials along a joint portion between the plate materials and is sandwiched and compressed by the plate material and the base material, Both sides along the longitudinal direction are made to be convex toward the plate material side from the central part, and when compressed, can be deformed into substantially the same plane as the central part, the surface on the plate material side, the central part is an adhesive surface, A joint waterproof material characterized in that both sides are non-adhesive. 2. A base material sheet, a foamed sheet, and a double-sided pressure-sensitive adhesive sheet having a thickness smaller than that of the foamed sheet. The foam sheet is attached to both side portions along the longitudinal direction on a plate material side surface of the material sheet, and the double-sided adhesive sheet is attached to a base material sheet between the foam sheets. Waterproof material for joints shown. 3. A foamed sheet and a double-sided pressure-sensitive adhesive sheet, wherein the surface of the foamed sheet on the side of the base material is provided with tackiness, and the double-sided pressure-sensitive adhesive is applied to the central portion along the longitudinal direction of the surface of the foamed sheet on the side of the plate material. The joint waterproofing material according to claim 1, wherein the sheet is attached, and both side portions along the longitudinal direction are convex toward the plate material side from the double-sided adhesive sheet surface of the central portion. 4. A foamed sheet and a double-sided pressure-sensitive adhesive sheet, wherein the plate-side surface of the double-sided pressure-sensitive adhesive sheet is provided with a step having a smaller thickness on both sides along the longitudinal direction than the central portion, and the foamed sheet is double-sided. The joint waterproofing material according to claim 1, wherein the joint waterproofing material is attached along both sides of the pressure-sensitive adhesive sheet, and is convex toward the plate material side from the double-sided pressure-sensitive adhesive sheet surface of the central portion. 5. A foam sheet, which becomes extremely thin when compressed, and a double-sided pressure-sensitive adhesive sheet. The double-sided pressure-sensitive adhesive sheet is attached to both sides of the double-sided pressure-sensitive adhesive sheet on the side of the plate material along the longitudinal direction. The joint waterproofing material according to claim 1, wherein the joint waterproofing material is provided.