JPH0735691B2 - Tarpaulin joining method and tarpaulin edge sealing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a waterproof joining method for a portion (hereinafter referred to as “joint portion”) where waterproof sheets are superposed and joined, and sheet end portions at the beginning and end of pasting or The present invention relates to a waterproof sealing method.

[Prior art]

Traditionally, on the ground above and below the roof of a building civil engineering structure, veranda,
When waterproofing floors, corridors, walls, and other lower grounds using waterproofing materials such as waterproofing sheets, in particular, as shown in FIG. 3, the joints of the waterproofing sheets are synthetic polymer roofing waterproof sheets 11 , 11 'and the waterproof sheet 11' and the surface of the base A, a tape-like sealing material 12 containing IIR (isobutylene-isoprene rubber) as a main component is interposed, and an oak material such as butyl rubber or polyurethane (irregular shape) It is common to seal the end of the waterproof sheet 11 'with a sealing material (13).
For example, taking the end treatment of the waterproof sheet at the corner of concrete shown in FIG. 4 as an example, the edge of the waterproof sheet 11 and the base A
In general, a tape-like sealing material 12 is interposed between the surface and the surface, and the end of the waterproof sheet 11 is sealed with a caulking material 13 such as butyl rubber or polyurethane.

[Problems to be Solved by the Invention]

However, according to the above-described conventional joining method of the waterproof sheet and the joining method or sealing method of the sheet ends at the beginning and the end of pasting, there is a slight step in the portion, but the treatment is performed on a substantially flat surface. , Caulking material is difficult to attach, and the amount of adhesion is not constant, and
Since the caulking material is exposed, there is a problem in that it deteriorates and breaks easily over time, and its sealing performance is not fully exhibited.

[Means for Solving the Problems]

The present invention has been conceived in view of the above-mentioned problems, and in particular, it is possible to surely bond the joint portion of the waterproof sheet and the sheet end portions of the start and end of sticking to the base, and further, waterproof. The present invention provides a method that has excellent sealing properties and that enables efficient work without requiring skill.

The configuration of the present invention will be described below.

That is, the feature of the present invention is that the first double-sided adhesive tape is interposed between the end portion of the pre-applied waterproof sheet and the base surface so that the first double-sided adhesive tape protrudes from the end portion of the pre-applied waterproof sheet by a predetermined width. Then, after covering the end portion of the pre-applied waterproof sheet and the protruding portion of the first double-sided adhesive tape and overlapping the second double-sided adhesive tape so as to protrude from the protruding portion by a predetermined width, the second The double-sided adhesive tape is attached onto the double-sided adhesive tape, leaving the end portion of the second double-sided adhesive tape at a fixed width, and the single-sided adhesive tape is used to bond the rear-end waterproof sheet to the joint end portion and the second side. The first invention is a method of joining a waterproof sheet, which is characterized in that the double-sided adhesive tape is coated with the non-adhesive surface of the single-sided adhesive tape so as to cover the rest of the constant width, and the first invention is a waterproofing method. Sheet edge and substrate And a double-sided adhesive tape so as to protrude from the end of the waterproof sheet by a predetermined width, and then cover the end of the waterproof sheet and the protruding portion of the double-sided adhesive tape with the single-sided adhesive tape. Then, the second invention is a method for sealing an end portion of a waterproof sheet, which is characterized in that the non-adhesive surface of the one-sided adhesive tape is attached outside.

〔Example〕

 Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a partially enlarged cross-sectional view showing a joined state of a joined portion of a waterproof sheet according to the present invention, and FIG. 2 is a partially enlarged cross-sectional view showing a sealing structure of an end portion of a waterproof sheet at the beginning and at the end of application. .

First, referring to FIG. 1, the joining method of the joining portion of the waterproof sheet will be described. Between the edge portion of the pre-applied waterproof sheet 1 and the surface A of the base, the a portion is about 10 to 20 mm wide. Stick the double-sided adhesive tape 2 of 120 mm width so that it sticks out. Next, using a double-sided adhesive tape 3 having a width of 150 mm on it, the b portion is 10 to 20 mm and the c portion is 5 to 10 mm.
Laminate them so that they stick out, and then paste them together. After that, the post-adhesion waterproof sheet 1'is adhered onto the double-sided adhesive tape 3 so that the lap portion with the pre-adhesion waterproof sheet is about 100 mm, and pressed by a roller. Finally, the non-adhesive surface of the single-sided adhesive tape 4 with a width of 50 mm is applied to the end of the post-applied waterproof sheet and the stepped part of the pre-applied waterproof sheet with the non-adhesive surface on the outside, and the
The sheet is distributed by mm, and the rear end of the waterproof sheet is attached to the double-sided adhesive tape 3 so as to cover the protruding portion c. In this way, the prevention sheet is joined.

Although not shown when the double-sided adhesive tape is attached to the base surface, a water-based adhesive is applied to the surface of the double-sided adhesive tape to be attached to the base in advance. On the other hand, the double-sided adhesive tape is firmly adhered, and its positioning is sure. On the other hand, without applying a water-based adhesive to the other side of the double-sided adhesive tape, the waterproof sheet will be completely adhered to the double-sided adhesive tape only by pressing after laying the waterproof sheet, and it will be misaligned after construction. Never.

Further, the double-sided adhesive tape used in the present invention, for example,
Synthetic rubber such as isobutylene-isoprene rubber (IIR), styrene-butadiene rubber (SBR), chloroprene rubber (CR), natural rubber and acrylic resin, etc. A tape having a thickness of 0.2 to 3.0 mm is usually meant, but it can be removed by interposing or laminating a woven fabric, a non-woven fabric, or a gauze on one side of the adhesive tape or on one side. It is more desirable from the standpoint of vapor and de-steaming properties. Further, the one-sided adhesive tape is a metal foil such as copper, silver or aluminum or ethylene-propylene-diene terpolymer (EPDE) on one surface of the above-mentioned double-sided adhesive tape,
Vulcanized rubber such as isobutylene-isoprene rubber (IIR) or synthetic woven cloth / nonwoven cloth / glass fiber cloth, etc. is adhered, and it has adhesiveness on one side only, and usually has a thickness of 0.3 to 3.0 mm.
It means a band. In the present invention, the single-sided adhesive tape is attached with the non-adhesive surface made of the above-mentioned material outside.

Next, the method of sealing the end portion of the waterproof sheet at the end of sticking will be described with reference to FIG. 2. A double-sided adhesive tape 6 is provided between the end portion of the waterproof sheet 5 and the surface A of the waterproof sheet. The one-sided adhesive tape 7 is attached so that the non-adhesive surface of the one-sided adhesive tape 7 is outside, and the end portion of the waterproof sheet 5 and the protruding portion of the front adhesive tape 6 are covered. By pressing with the rollers, the end portion of the waterproof sheet is sealed.

In addition, when the prevention sheet according to the present invention is attached to the lower surface of the ground, it is attached partially (for example, in several lines in a stripe shape at a portion corresponding to the long side or the short side direction of the waterproof sheet to be laid) ( Referring to FIG. 2, a double-sided adhesive tape is partially adhered as indicated by reference numeral 6 '), and a waterproof sheet is formed by partially providing a bonding zone B and a non-bonding zone C of the waterproof sheet. The effect of eliminating the so-called "blister" phenomenon, in which the foundation and the waterproof sheet are separated due to the evaporation of the water content of the foundation and the expansion pressure of the air entrained during the construction of the waterproof sheet, is effective if desirable.

As a result of observing the joints of the waterproof sheet constructed by the method of the present invention and the ends of the waterproof sheet for about one year, no abnormalities were observed, the construction quality was stable, and the waterproof sealing effect was obtained. It turned out to be extremely good.

[Action]

According to the method of the present invention, if the joining / sealing structure as shown in FIGS. 1 and 2 is adopted, in particular, in the case of FIG. It will be even better. Further, in the case of FIG. 1 and FIG. 2, the end of the waterproof sheet is sealed with the single-sided adhesive tape, and after the construction, the exposed surface of the single-sided adhesive tape is made of metal foil, non-woven fabric, synthetic woven fabric, or the like. Therefore, unlike the conventional caulking material, which is different from the mere exposure of the soft resin portion, the weather resistance is extremely good and the durability of the seal is improved.

〔The invention's effect〕

According to the present invention configured as described above, the following effects can be obtained.

The joining / sealing method of the present invention is basically the sticking of the waterproof sheet to the lower ground with a double-sided adhesive tape, and the adhesive force of the double-sided adhesive tape is almost constant. There is no need to make on-site adjustments like in the above, there is little variation in adhesion by the handling operator, consistent construction quality is always obtained, and the construction means itself is extremely simplified, so It can be installed without requiring skill.

[Brief description of drawings]

1 is a partially enlarged cross-sectional view showing a joined state of a waterproof sheet according to the present invention, FIG. 2 is a partially enlarged cross-sectional view showing a sealing structure at an end of the waterproof sheet, and FIG. 3 is a conventional waterproofing. FIG. 4 is a partially enlarged sectional view showing a joined state of a joined portion of the sheet, and FIG. 4 is a partially enlarged sectional view showing a seal structure of an end portion of a conventional waterproof sheet. 1 ... Waterproof sheet applied first, 1 '... Waterproof sheet applied later, 2.
3/6/6 '... double-sided adhesive tape, 5 ... waterproof sheet, 4
・ 7 ... single-sided adhesive tape, 11 ・ 11 '... waterproof sheet, 12 ...
Tape-like sealing material, 13 ... Caulking material, B ... Bonding zone, C ... Non-bonding zone.

Claims (2)

[Claims] 1. A first double-sided adhesive tape is interposed between an end portion of a pre-applied waterproof sheet and a base surface so as to protrude by a predetermined width from the end portion of the pre-applied waterproof sheet, and then the pre-applied waterproof sheet. Of the first double-sided pressure-sensitive adhesive tape and the second double-sided pressure-sensitive adhesive tape are overlapped with each other so as to cover the protrusion of the first double-sided pressure-sensitive adhesive tape and protrude from the second protrusion. The post-adhesive waterproof sheet is adhered to the second double-sided adhesive tape while leaving an end portion of the second double-sided adhesive tape at a certain width, and further, the joint end portion of the post-adhesive waterproof sheet and the second fixed adhesive tape are fixed by the single-sided adhesive tape. A method for joining waterproof sheets, characterized in that the non-adhesive surface of a single-sided adhesive tape is attached outside so as to cover the rest of the width. 2. A double-sided adhesive tape is interposed between an end portion of the waterproof sheet and a base surface so as to protrude from the end portion of the waterproof sheet by a predetermined width, and then the end portion of the waterproof sheet is attached by the single-sided adhesive tape. Also, a method for sealing an edge portion of a waterproof sheet, characterized in that the non-adhesive surface of the single-sided adhesive tape is attached outside so that the protruding portion of the double-sided adhesive tape is covered.