JPH0631003Y2 - Waterproof sheet for flat roof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an improvement of a waterproof sheet that is installed and laid in a corner when a waterproof sheet is constructed on a flat roof in a roof waterproofing method for a building.

(Prior Art) Conventionally, a roof waterproofing method of laying a waterproof sheet on a flat roof of a building is known. At this time, as shown in the first illustration, in the entry corner portion, when there is an entry corner b which rises vertically from the flat roof flat portion a, wall surfaces c and d orthogonal to the rise entry corner b.
However, it is difficult to lay a waterproof sheet along this three-dimensional shape because the shape is also orthogonal to the plane portion a.

In order to lay a waterproof sheet along such a three-dimensional shape, it is possible to form the waterproof sheet in the three-dimensional shape in advance, but for this purpose, a molding die is required and the waterproof sheet is used. There was the inconvenience of increasing the sheet production costs.

(Problems to be solved) The present invention provides a waterproof sheet which solves the above-mentioned conventional inconvenience, is extremely easy to manufacture, can be manufactured at a low cost, and can be reliably laid along the three-dimensional shape of the corner portion. To aim.

(Means for Solving the Problems) In order to achieve such an object, the present invention provides a waterproof sheet to be installed in a corner portion of a flat roof, in which apex of one corner portion of a first sheet having a substantially triangular shape in diameter. And a short side in which an angle formed by the hypotenuse intersects an obtuse angle is provided, and the second sheet having substantially the same shape as the first sheet is superposed with the three corners corresponding to the first sheet aligned with each other. The first adhesive piece is provided along the position corresponding to, the second adhesive piece is further provided along the position corresponding to the oblique side, and the first adhesive piece is folded back along the short side to form the second adhesive piece. It is characterized in that it is folded back along the hypotenuse and adhered to the first sheet. The waterproof sheet of the present invention is made of rubber or synthetic resin, and is not different from the commonly used one.

It is composed of a first sheet and a second sheet, both sheets are cut and formed, and further adhered to form a shape conforming to the three-dimensional shape of the corner portion.

The first sheet has a substantially right triangle shape, and has short sides extending from the apexes of one of the corners and having obtuse angles with the hypotenuse. It is preferable that the length of the short side is equal to or longer than the length of the rising corner from the flat roof flat portion.

The second sheet has substantially the same shape as the first sheet, and is basically the same except that it has an adhesive piece to be bonded to the first sheet. That is, when the corresponding three corners of the first sheet and the second sheet are aligned and overlapped, only the adhesive pieces project from the first sheet. Therefore, both sheets can be formed by cutting a substantially rectangular sheet by arranging the hypotenuse sides at positions facing each other. The adhesive piece of the second sheet is formed along the position of the short side of the first sheet when the corresponding three corners of the second sheet are overlapped with each other.
It consists of an adhesive piece and a second adhesive piece formed along the position of the hypotenuse.

When adhering the two sheets, the corresponding three corners of the two sheets are made to coincide with each other, and the respective adhesive pieces are folded back along the short side and the oblique side and adhered.

When both sheets thus bonded are developed with the bonding side as the back surface, a three-dimensional shape is formed along the inside corners.

The first sheet has a substantially right-angled triangular shape as described above, but it is slightly changed depending on the shape of the entry corner portion, and the second sheet has the same shape.

(Operation) Since the present invention adopts such a configuration, the joint between the short side of the first sheet and the first adhesive piece of the second sheet rises along the rising corner, and both sides thereof further have a flat roof plane. Since it will be a shape that follows the wall surface that rises orthogonally from
A waterproof sheet can be laid along the three-dimensional shape of the corner portion.

(Embodiment) This will be described in more detail with reference to FIGS. 2 to 5 showing an embodiment of the present invention.

First, as shown in the second illustration, the first sheet 1 and the second sheet 2
And were arranged so as to face each other, and a rectangular sheet was cut and formed. The first sheet 1 has a substantially right-angled triangular shape, and has short sides 5 extending from the apexes of one of the corner portions 3 and forming an obtuse angle with the hypotenuse 4 to form an obtuse angle. 2nd sheet 2
In the drawing, the portion 6 partitioned by the broken line is the first sheet 1
And the same shape, and the first adhesive piece 7 provided corresponding to the position of the short side 5 of the first sheet 1 and the second adhesive piece 8 provided corresponding to the position of the oblique side 4 are cut and integrated. Formed.

Then, as shown in FIG. 3, the three corresponding corners of the sheets 1 and 2 are aligned with each other, and the first adhesive piece 7 is placed along the short side 5 and the second adhesive piece 8 is placed along the oblique side 4. 1 sheet 1
Project from.

Then, as shown in FIG. 4, the adhesive pieces 7 and 8 are folded back and adhered to the first sheet 1 side.

When both sheets 1 and 2 thus bonded are developed with the bonding side as the back surface, it becomes as shown in FIG. 5, and the shape conforms to the three-dimensional shape of the corner portion.

(Effect) As is apparent from the above description, the present invention can be manufactured by cutting the first sheet and the second sheet and adhering them to each other, and is extremely easy to manufacture. Therefore, there is an effect of providing a waterproof sheet for a flat roof, which can be manufactured at low cost and can be surely laid along the three-dimensional shape of the corner portion.

[Brief description of drawings]

FIG. 1 is a perspective view showing a corner portion of a flat roof, FIGS. 2 to 5 show an example of an embodiment of the present invention, and FIGS. 2 to 4 show a manufacturing process of a waterproof sheet. FIG. 5 is a plan view for explaining, and FIG. 5 is a perspective view showing a developed state of the waterproof sheet. 1 ... 1st sheet, 2 ... 2nd sheet 3 ... corner, 4 ... oblique side 5 ... short side, 7 ... first adhesive piece 8 ... second adhesive piece

Claims (1)

[Scope of utility model registration request] 1. A waterproof sheet to be attached to a corner portion of a flat roof, wherein a short side extending from one apex of one corner portion of a substantially right-angled triangular first sheet and having an obtuse angle with a hypotenuse is provided. , A second sheet having substantially the same shape as the first sheet
When the three corners corresponding to the sheet are aligned and overlapped, a first adhesive piece is provided along a position corresponding to the short side, and a second adhesive piece is further provided along a position corresponding to the oblique side. A waterproof sheet for a flat roof, characterized in that the adhesive piece is folded back along a short side, and the second adhesive piece is folded back along an oblique side and bonded to the first sheet, respectively.