JPS5891264A - Water-proof sheet - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The stiff invention is a waterproof t-shirt that prevents the occurrence of sagging after construction.
Regarding shi.

Waterproofing work on sub-vehicles and rooftops of buildings was done by applying adhesive to the construction surface and adhering waterproofing sheets such as vulcanized and unvulcanized rubber, but there was a lot of residue left during construction. ! ! The installed tarpaulin sheet may sag locally due to the expansion of the air and moisture contained inside the concrete (concrete), and this lid expands over time. Eventually, the waterproofing effect would be lost, and this countermeasure against 7 cracks was the biggest problem in terms of waterproofing construction technology.

As a recent measure to prevent blister, Table N&:
Paste the uneven sheet with connected concave parts by applying the uneven surface to the adhesive applied on the construction plan, and then apply 1! Then, by applying adhesive and pasting a waterproof sheet, and installing deaeration panels and deaeration ventilators in various places to remove air and water vapor, a circular part of the uneven sheet is formed between it and the image to be constructed. A continuous ventilation path was opened to the atmosphere to prevent sagging.

The disadvantages of this method are that a separate textured sheet is required in addition to the waterproof sheet, that the cost of materials increases due to the need for 2-gluing, and that the cost is high due to the time-consuming process of gluing. Met.

The present invention eliminates these drawbacks and makes it possible to carry out waterproofing work at low cost and without causing sagging. That is, a continuous non-adhesive portion is provided on the adhesion surface of the waterproof sheet, and will be explained below based on the attached illustrative drawings.

The sheet (1) shown in the plan view in Figure 1 and the locally enlarged cross-sectional view in Figure 2 has two types: one has a self-adhesive property made of unvulcanized rubber, and the other has a self-adhesive property made of vulcanized rubber. The surface of the film (3) is coated with a large number of holes uJ.

By using polyethylene or a non-adhesive material such as polyethylene for the unvulcanized rubber sheet, this film (3) can be applied directly to the surface coated with adhesive to fill the hole (2). However, since there is a non-adhesive film (3) in the other part, it does not adhere to the surface to be applied, and since this part is continuous, air and water vapor can freely pass through it.

In addition, vulcanized rubber sheets do not have self-adhesive properties, so adhesive is applied to the sheet, adhesive is applied to the surface to be applied, and adhesive is applied on both sides, but sheet (l) If you peel off the iI film (3) coated with adhesive from above the perforated film (3) and adhere it, the hole (7) will become the adhesive part, and the part where you removed the film (3J) will have adhesive on it. Since there is no adhesive, it becomes a non-adhesive part.

The example of the Ukihata diagram that we saw is one in which continuous concave portions (4) are provided on the surface of the sheet (1) made of vulcanized rubber to form independent convex portions (5), and these convex portions If adhesive is applied to the parts and bonded, the four parts become non-adhered parts.

This type of tarpaulin sheet is usually rolled up in width Im and length 10 mm, and when used, the seam is approximately 10 mm long.
The construction is done by overlapping each other to some extent, but if there is a non-adhesive part on this overlapping surface, water will leak, so it is necessary to glue the entire overlapped surface, so use a self-adhesive film (
3) If the film is to be used with the film still attached, peel off the film only in this area and adhere it to the entire surface.If this overlapping area impedes air permeability, place a small piece of non-adhesive film on the surface to be applied. By laying it in, this area can be used as a ventilation route.

In addition, in the case of non-self-adhesive sheets of vulcanized rubber, overlapping parts are bonded entirely by applying adhesive to both sides of the overlap, and if a ventilation path is required, a small piece of non-adhesive sheet is placed in the same manner as above. .

Furthermore, if the sheet itself has unevenness, a rubber-based filler is applied to fill the recesses in the overlapping areas to seal the recesses, and then an adhesive is applied to adhere the entire surface, which also improves breathability. If necessary, a non-adhesive film is placed.

Incidentally, since the peripheral part needs to be fastened to the surface to be applied, the entire surface is adhered by peeling off the film or applying an adhesive in the same manner as the overlapping part.

When using the waterproof sheet of the present invention made in this way, a continuous non-adhesive part is formed in the adhesive, so air and water vapor can freely pass through this part, and a deaeration plate or a Since air can be freely removed from the degassing ventilator (6), no sagging occurs, and the double effort of pasting another uneven sheet is eliminated, eliminating the need for extra materials and labor, making it cost-effective, and 7. It is possible to perform waterproofing without causing creases.

[Brief explanation of the drawing]

The 1st ml is a local plan view showing an example of the implementation of the present invention, and the 29th ml is a local plan view showing an example of implementing the present invention.
1 is a locally enlarged cross-sectional view, #I8 is a locally enlarged cross-sectional view showing another example, and Figure 4 is a locally enlarged cross-sectional view of completed construction. l...C) 2...Large 3・・Film 4・・Concave 1
1 5. Convex portion 6. Ventilator.

Claims (1)

[Claims] ■ A waterproof sheet characterized by having a continuous non-adhesive portion on the adhesive surface. (2) A waterproof sheet according to claim 1, wherein the surface of a self-adhering sheath such as unvulcanized rubber is coated with a thin non-adhesive film such as ethylene having a large number of layers. 0 Covering the surface of a non-self-adhesive sheet such as vulcanized rubber with a film or paper with many holes, applying an adhesive over it, and peeling off the film or paper to remove the remaining parts. The waterproof sheath according to claim 1, wherein the waterproof sheath has non-adhesive properties. Claim 11m, in which continuous recesses are provided on the surface of the waterproof sheet itself, and parts other than the recesses are bonded.
Waterproof sheet as described in +1.