JP4718855B2 - Dry waterproof material - Google Patents

Description

  The present invention relates to a construction method for waterproofing a building and a dry waterproof member, and more specifically, a method for waterproofing a corner portion provided with an outer wall panel on a wall surface with a predetermined gap by a dry waterproof member. And a dry waterproof member used for the construction.

In conventional industrialized houses, pillars, outer wall panels, etc. are individually manufactured at the factory and assembled on site.
In such a house, as shown in FIG. 9, an entrance corner A and an exit corner B are formed at the junction between the horizontal or inclined lower floor roof of the building and the upper floor wall surface. The upper floor wall is usually provided with an outer wall panel, and in order to waterproof the joint, it is necessary to dispose a waterproof material continuous from the lower floor roof surface to the upper floor wall and the outer wall panel. .
Since the waterproof material is provided after the outer wall panel is pasted on site, the workability is very poor.

  Therefore, the present invention is for solving the above-mentioned problems of the prior art, and is erected so as to constitute a bottom part of a corner part such as a horizontal or inclined lower floor roof and a corner part such as a wall surface of an upper floor. It is an object of the present invention to provide a construction method capable of reliably and extremely easily waterproofing a joint portion between two wall surfaces, and a dry waterproof member having a low manufacturing cost used in this construction method.

In order to solve the above-mentioned problems, the present inventors have found a solution as follows as a result of intensive studies.
That is , the dry waterproof member according to the present invention is a dry waterproof member that waterproofs a corner portion in which an outer wall panel is provided with a predetermined gap on the wall surface, as defined in claim 1. The member is composed of a flexible sheet that comes into contact with the bottom surface of the corner and a synthetic resin sheet that is watertightly joined to the flexible sheet and comes into contact with the wall surface. The synthetic resin sheet is bent along a side adjacent to the flexible sheet and is erected on the end of the flexible sheet, The synthetic resin sheet has a crease for folding into the shape of the dog and at least one crease that expands from the upper part of the crease toward the flexible sheet side. It is characterized by that.
Further, the present invention according to claim 2 is the dry waterproof member according to claim 1 , wherein the synthetic resin sheet has a dogleg-shaped crease upward from a lower end portion of a corner portion of the synthetic resin sheet. It is characterized by providing at least two bent grooves that expand toward the front.
Further, according to a third aspect of the present invention, in the dry waterproof member according to the first or second aspect , a fold groove is provided at a central portion in the width direction of the synthetic resin sheet.
The construction method of the present invention is a method for waterproofing with the dry waterproof member according to any one of claims 1 to 3 as described in claim 4, wherein the corner portion of the bent synthetic resin sheet is provided. The synthetic resin sheet is folded inward to lower the standing portion of the synthetic resin sheet, inserted between the wall surface and the outer wall panel, and then the corner portion of the folded synthetic resin sheet at the corner. And is fixed to the corner.

According to the present invention, even if the standing part of the synthetic resin sheet of the dry waterproof member is higher than the height of the gap between the upper surface of the board and the lower end of the outer wall panel provided on the outer wall, By folding the corner portion of the synthetic resin sheet inward, the standing portion of the synthetic resin sheet can be lowered and can be easily inserted from the gap. In addition, after the insertion, simply extending the folded corner portion increases the standing portion of the synthetic resin sheet rather than the height of the gap, so that sufficient waterproof performance can be obtained.
Moreover, according to this invention, it becomes possible to fold easily in the case of insertion by providing a crease line in advance in the dry waterproof member.
In addition, by providing at least two creases that expand upward from the lower end of the synthetic resin sheet as the fold-like creases of the synthetic resin sheet, the corners of the plurality of corners are inclined. Folding lines can be folded and constructed corresponding to the corners, and various dry angles of the corners of the corners can be accommodated with one dry waterproof member.
Moreover, when the synthetic resin sheet is folded inward by providing a folding line at the central portion in the width direction along the wall surface of the corner of the synthetic resin sheet, the synthetic resin is removed from the folding line when the corner of the synthetic resin sheet is folded inward. The seat can be easily lifted. Furthermore, the height of the standing portion of the synthetic resin sheet can be determined in advance by this crease during the insertion operation.

  Next, the dry waterproof member of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic view of a corner for explaining the construction method of the present invention.
Outer wall panels 2 and 2 are provided on the surfaces of the outer walls 1 and 1 at a predetermined interval. In the illustrated case, the strips 3 and 3 are both joined to the outer walls 1 and 1 horizontally. In the construction method of the present invention, the joint between the sheet plates 3 and 3 and the outer walls 1 and 1 is waterproofed by the dry waterproof member 4 shown in FIG.
A dry waterproof member 4 shown in FIG. 2 folds a polypropylene sheet 5 having a predetermined width along a folding line 7 provided in the width direction into a U-shape, and paste margin 5 a along an adjacent side of the rubber sheet 6. It is formed so as to stand up against the rubber sheet 6 by bonding with an adhesive. A folding line 8 is provided at a substantially central portion in the width direction of the polypropylene sheet 5, and a V-shaped bending line that expands downward toward the rubber sheet 6 from the intersection of the bending line 8 and the folding line 7. 9,9 are provided.
Next, a method for constructing the dry waterproof member 4 at the corners shown in FIG. 1 will be described.
The corners of the dry waterproof member 4 are folded inward along the folding lines 9 as shown in FIG. Between the wall surface 1, 1 and the outer wall panel 2, 2 between the wall surface 1, 1 and the outer wall panel 2, 2. To be inserted. Thereafter, although not shown, the corners of the folded polypropylene sheet 5 are expanded, and the waterproof construction is completed by locking the dry waterproof member 4 as necessary.
In the example described above, the edge of the strips 3 and 3 are joined horizontally to the outer walls 1 and 1, but the dry waterproof member 4 is bent in a U shape and is erected on the rubber sheet 6. When making the angle of the crease 7 with respect to the rubber sheet 6 be 90 ° or more, the edges of the strips 3 and 3 are both on the outer walls 1 and 1, as shown in FIG. Even if it is a case where it joins inclining so that it may descend | fall, it can be used.

Next, another embodiment of the present invention will be described.
FIG. 5 is a schematic view of a corner portion for explaining the waterproof construction method of the present embodiment.
In the figure, the end edges of the strips 3 and 3 are joined horizontally to one outer wall 1 and are joined to the other outer wall 1 at an angle. The outer walls 1 and 1 are provided with outer wall panels 2 and 2 with a predetermined interval. A method of waterproofing the corners using the dry waterproof member 4 shown in FIG. 6 will be described.
The dry waterproof member 4 shown in FIG. 6 is formed by folding a polypropylene sheet 5 having a predetermined width along a V-shaped fold line 10 that expands in a vertical direction from a corner of the rubber sheet 6 and adjacent to the rubber sheet 6. It is formed so as to be erected with respect to the rubber sheet 6 by adhering with an adhesive at the adhesive margin 5a along the side. A folding line 8 is provided at a substantially central portion in the width direction of the polypropylene sheet 5, and bending lines 11, 11 inclined downward toward the rubber sheet 6 from the intersection of the bending line 8 and the bending line 10 are provided. It has been.
The corner of the dry waterproof member 4 is folded inward along the fold line 11 as shown in FIG. 7, thereby lowering the portion where the polypropylene sheet 5 is erected. 3 and the outer wall panels 2, 2 provided on the outer walls 1, 2 from the gap between the lower end surfaces of the outer wall panels 2, 2 (parts indicated by hatching in FIG. 5), the dry waterproof member 4 is connected to the wall surfaces 1, 1 and the outer wall panels 2, 2. Intervene between them. Thereafter, although not shown, the corners of the folded polypropylene sheet 5 are expanded so that the folding lines 11a are arranged along the corners forming the corners, and the dry waterproof member 4 is engaged as necessary. Waterproofing is completed after stopping.
In the present embodiment, the crease 11a is arranged along the vertical line that forms the corner, but as shown in FIG. 8, when the slope is reversed with respect to the strip 3 in FIG. In this case, the bending line 11b may be arranged along the corners constituting the corners.
Note that if the upper end portion of the polypropylene sheet is folded back to the outer wall panel side with a predetermined width to provide a folded piece, the folded piece can prevent water from entering between the wall surface and the outer wall panel. Moreover, the dry waterproof member can be locked by the folded piece. Although there is no restriction | limiting in particular about the folding width | variety of this folding piece, For example, it can be set as about 10 mm.

  In order to form the fold line, for example, the fold line forming part of the polypropylene sheet is continuously formed in a gap formed by a groove part formed on the surface of the rotating roller and a rotary blade having a blade edge immersed in the groove part. It is obtained by passing through.

  In order to attach the rubber sheet to the polypropylene sheet, it is preferable to join using a butyl pressure-sensitive adhesive excellent in waterproofness.

  In the said embodiment, although the polypropylene sheet was used as a synthetic resin sheet, it does not restrict | limit in particular to this. Moreover, in order to improve workability, it is preferable to use a synthetic resin sheet having transparency. In addition, when using a polypropylene sheet as a synthetic resin sheet, for example, a sheet formed into a uniform thickness in an unstretched state without orientation of a crystalline mixture having a propylene unit component of 50 mol% or more is used. It is preferable to do. The synthetic resin sheet preferably has a thickness of about 0.3 to 3.0 mm.

Moreover, in the said embodiment, although the rubber sheet was used as a flexible sheet | seat, it is not necessarily limited to this, For example, a vinyl chloride sheet etc. can be used.
In addition, when using a rubber sheet as a flexible sheet, it is preferable to use a blend rubber of ethylene / propylene rubber (EPDM) and butyl rubber, thereby providing excellent smoothness necessary as a waterproof sheet. A rubber sheet is obtained. Further, it is preferable that the rubber sheet is impregnated with a rubber paste and lined to be integrated with the rubber sheet. This is because the pulling cloth is also waterproof and becomes a dry waterproof member with high waterproofness. Furthermore, since the pulling cloth is impregnated with rubber paste, the pulling cloth itself is provided with adhesiveness, and the attaching operation to the construction site becomes easy. In addition, when the woven fabric is a polyester woven fabric, it is effective for heat resistance and does not change in dimensions even after curing at 100 ° C. for 1000 hours.

Schematic diagram of a corner for explaining the construction method of one embodiment of the present invention The perspective view of the dry-type waterproof member of one embodiment of this invention A perspective view for explaining the folded state Schematic diagram of a corner for explaining the construction method of one embodiment of the present invention Schematic diagram of a corner for explaining the construction method of another embodiment of the present invention The perspective view of the dry-type waterproof member of other embodiment of this invention A perspective view for explaining the folded state A perspective view for explaining the folded state Explanatory drawing of conventional entrance corner or exit corner

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer wall 2 Outer wall panel 3 Edge plate 4 Dry waterproofing member 5 Polypropylene sheet 6 Rubber sheet 7 Vertical folding line 8 Horizontal folding line 9 V-shaped folding line 10 V-shaped folding line 11 Inclined folding line

Claims (4)

A dry waterproof member for waterproofing a corner where a wall surface has a predetermined gap and an outer wall panel is provided, and the dry waterproof member has a flexibility that comes into contact with the bottom surface of the corner. And a synthetic resin sheet that is water-tightly joined to the flexible sheet and comes into contact with the wall surface, wherein the synthetic resin sheet is adjacent to the flexible sheet. The synthetic resin sheet is bent at the end of the flexible sheet and folded at the end of the flexible sheet. A dry waterproof member comprising: at least one crease that expands from the upper part of the crease toward the flexible sheet side. As shaped crease of Ku of the synthetic resin sheet, to claim 1, characterized in that a least two folding grooves expansively opened upward from the lower end portion of the corner portion of the synthetic resin sheet The dry waterproof member as described. The dry waterproof member according to claim 1 or 2 , wherein a folding groove is provided at a central portion in the width direction of the synthetic resin sheet. A method for waterproofing with the dry waterproof member according to any one of claims 1 to 3 ,
By folding the corners of the folded synthetic resin sheet inwardly, the synthetic resin sheet has a lower standing portion, and is inserted between the wall surface and the outer wall panel. A waterproof construction method characterized in that a corner of the folded synthetic resin sheet is expanded and fixed to the corner.

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