JPH0541134Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention relates to the structure of a waterproof layer on the roof and floor of a building, and is applied between a mortar finish layer and a waterproof layer on the roof and floor of a building. The present invention relates to a waterproof structure that has a moisture drainage function.

(Prior art) When conventionally, waterproof sheets and curing sheets are installed as an impermeable layer on the roof or floor of a building, they are attached partially or completely with adhesive, etc. A certain amount of moisture becomes water vapor and expanded air due to temperature rise or direct sunlight, which causes the impermeable layer to swell and the attachment to peel and tear.
A technique using hook side fasteners as a moisture drainage tape is known (Utility Model Application Publication No. 61-20828), but it is also used for moisture drainage between an impermeable layer and a mortar finish layer such as the roof or floor of a building. The gap is not all over but only in a part, and the impermeable layer is attached using a conventional method such as adhesive.

(Problem to be solved by the invention) The waterproof structure using the above-mentioned moisture-draining tape only drains water vapor from the hook gaps on the bottom surface of the waterproof sheet and curing sheet, which are impermeable layers, and is structurally impermeable. Moisture cannot be drained from the entire bottom surface of the layer.

In addition, adhesives are generally used to attach and fix the impermeable layer to the exterior of the building or to the floor surface, which requires construction costs and time, is complicated, and can cause swelling of the impermeable layer and the attachment part. There are concerns about peeling and tearing.

(Means for Solving the Problems) The present invention has been devised to solve the problems in the prior art. That is, in the present invention, a surface fastener having a hook-like engagement element on the upper surface and a fixing element on the lower surface is disposed in the mortar finishing layer so that the fixing element is embedded in the mortar layer, and at least part of one surface is disposed. A water-impermeable sheet material having a loop-shaped engagement element is disposed on the mortar finishing layer, the hook-shaped engagement element and the loop-shaped engagement element are locked, and a water-impermeable sheet material having a loop-shaped engagement element is disposed on the mortar finish layer. This is a waterproof structure for a building, characterized in that a layer is formed and a moisture drainage gap is provided between the mortar finish layer and the impermeable layer.

The present invention will be explained in detail with reference to the drawings.

Figure 1 shows one of the waterproof structures for buildings according to the present invention.
It is a sectional view showing an example. A surface fastener 3 used in the present invention is disposed on a mortar finishing layer 2 provided on a concrete layer 1 of a building. The hook-and-loop fastener 3 has a hook-like engaging element 4 on one side and a fixing element 5 on the opposite side. The hook-like engaging element 4 engages with a water-impermeable sheet-like material to be described later, and is located on the upper surface of the mortar finish layer. The fixing element 5 fixes the hook-and-loop fastener 3 to the mortar finish layer 2, and can have various structures.

A water-impermeable sheet material 6 is disposed to cover the mortar finish layer. The water-impermeable sheet material 6 is composed of a water-impermeable layer 7 and a loop-shaped engagement element 8 provided on at least a portion of one surface thereof. Impermeable layer 7
serves as a waterproof layer for the mortar finish layer, and the loop-shaped engagement element 8 engages with the hook-like engagement element 4 of the hook-and-loop fastener 3 to fix the water-impermeable sheet material onto the mortar finish layer.

The hook-and-loop fastener used in this invention has the function of fixing the water-impermeable sheet material, and also functions as a passage mechanism for discharging water vapor or expanded air generated between the mortar finish layer and the water-impermeable sheet material. do. In addition, the voids formed by the loop-shaped engagement elements provided in the water-impermeable sheet material also act as a mechanism for discharging water vapor, etc., so that moisture can be easily discharged from a wide range of the mortar finish layer. As a result, even if the water contained in the lower surface of the impermeable layer or the mortar layer turns into water vapor and expanded air due to temperature rise or direct sunlight, the moisture that is formed on the entire surface or part of the area between the impermeable layer and the mortar layer is The void is
The moisture becomes a drainage (exhaust) passageway, and is released to the outside air from the vent and riser ports installed at one or both ends of the impermeable layer, making it possible to prevent swelling of the impermeable layer.

In addition, since the impermeable layer and the mortar finish layer are fixed using hook/loop engagement elements rather than adhesives, earthquakes, vibrations, etc. can be prevented by slipping of the engagement surface, thereby preventing problems. It is also effective in preventing tearing of the water permeable layer.

One example of the hook-and-loop fastener used in the present invention is to integrate a member with a large number of hook-like engagement elements (hereinafter sometimes referred to as engagement elements) and another fixing member using an adhesive or ultrasonic melt bonding method. This is what I did.
The member having the engagement element includes a tape fastener made by knitting and weaving filament fibers or a fastener called Magic Tape (registered trademark). Furthermore, the member with engagement elements may be a plastic sheet with a plurality of engagement elements on its surface obtained by extrusion.

Another example of the hook-and-loop fastener of the present invention is one in which a member having an engaging element and a fixing member are integrally constructed. A specific example of an integrated surface fastener is one in which a large number of engaging elements and fixing members are provided on both sides of a single base fabric by knitting and weaving filament fibers. In this case, the engagement element is a hook-like engagement element and the fixing member is a number of filament loops.

FIG. 2 is a sectional view showing an example of a surface fastener obtained by weaving and knitting filament fibers.
The hook-and-loop fastener 3 includes a base fabric 3', a hook-shaped engaging element 4 provided on the upper surface thereof, and a loop-shaped fixing element 5 made of monofilament fiber provided on the lower surface.
It consists of

The hook-like engagement element has a shape such as a hook shape, a mushroom shape, an arrowhead shape, or an umbrella shape. Another specific example of a hook-and-loop fastener is a sheet-like material obtained by plastic extrusion molding, which has a large number of engaging elements on one side and a large number of fixing members on the opposite side. In this case, the fixing element also has an arrowhead shape,
It can be shaped like a mushroom or a cap. In either case, various hook-like engagement elements and fixing elements can be used within the scope of the invention.

The water-impermeable sheet material used in the present invention is composed of a water-impermeable layer made of rubber, various plastics, or fiber fabrics, and a composite thereof, and loop-shaped engagement elements. The loop-shaped engagement element is made of a loop-shaped woven fabric, non-woven fabric, or the like.

Lamination adhesion is usually used to bond and integrate hook-and-loop fasteners with loop-shaped engagement elements on the back side of the impermeable layer, but sewing, ultrasonic, high frequency,
It is also possible to use heat fusion bonding or adhesive bonding. The loop-shaped engagement element needs to be provided in the portion that engages with the surface fastener described above and in the portion necessary for moisture drainage and exhaust, and is at least 1/4 or more of the area of the impermeable layer, preferably approximately It is desirable to provide it over the entire surface.

(Effects of the invention) By adopting the waterproof structure of the invention, an impermeable layer can be installed extremely reliably and efficiently on the roof and floor of a building, and the swelling phenomenon of the impermeable layer can be prevented. The waterproofness and durability of architectural structures can be greatly improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of a waterproof structure according to the present invention, and FIG. 2 is a sectional view showing an example of a hook-and-loop fastener used in the present invention. DESCRIPTION OF SYMBOLS 1... Concrete layer, 2... Mortar finishing layer, 3... Surface fastener, 4... Hook-like engagement element, 5... Fixing element, 6... Water impermeable sheet material, 7... Water impermeable layer , 8...Loop-shaped engagement element.

Claims (1)

[Scope of utility model registration request] A surface fastener having a hook-like engagement element on the upper surface and a fixing element on the lower surface is disposed in the mortar finishing layer so that the fixing element is embedded in the mortar layer,
A water-impermeable sheet material having a loop-shaped engagement element on at least a portion of one surface is disposed on the mortar finishing layer, the hook-shaped engagement element and the loop-shaped engagement element are locked, and the mortar finish layer A waterproof structure for a building, characterized by forming an impermeable layer thereon and providing a moisture drainage gap between the mortar finish layer and the impermeable layer.