JP2674610B2 - Fixing structure of waterproof sheet and fixing method thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for waterproofing a structure by means of mechanical fixing means, and more particularly, to a structure for fixing a waterproof sheet which can make the waterproof sheet strong against suction force by wind and the fixing thereof. Regarding the method.

[0002]

2. Description of the Related Art Conventionally, the fixing procedure of a waterproof sheet fixing structure using mechanical fixing means has been generally as follows.

It is a method in which a roll-shaped waterproof sheet having a certain width is spread on the surface of an article to be waterproofed, such as a rooftop floor, and then several tens of millimeters from one of the long edges extends along the long edge. Fasteners such as screws and nails are fixed at regular intervals with fasteners that are selected according to the substrate.

Then, the other waterproof sheet is developed so as to overlap the fixed side of the waterproof sheet previously fixed by about 100 mm,
Of the overlapping portion, the side close to the edge of the upper waterproof sheet at the overlapping portion is heat-sealed with hot air.

The above work is repeated in sequence to construct a waterproof roof, wall, or other enclosure. In this way, one edge of the waterproof sheet is fastened to the base of the article to be waterproofed with a fastener at a constant pitch over the entire length, and the other edge is fixed to the previously fastened waterproof sheet. Since both edges of the waterproof sheet are fixed to the base, the waterproof sheet is configured not to be blown off by wind or the like.

[0006]

However, as shown in FIG. 8, when the suction force due to the negative pressure of the wind acts on the waterproof sheet a after the both edges of the waterproof sheet a are fastened as described above, The central portion of the waterproof sheet a swells upward to generate an in-plane tensile force on the waterproof sheet a, and this tensile force acts to peel off the fixed portion at the overlapped portion, and the left and right waterproof sheets a, a The resultant force of the in-plane tensile force acts to pull out the fastener, and in the case of strong wind, the waterproof sheet a is peeled off from the base.

Therefore, in this case, the strength characteristics required for the constituent materials are that the waterproof sheet is not broken by the in-plane tensile force generated by the wind, the fused portion of the waterproof sheet is not peeled off, the fastener is not pulled out, For example, the waterproof sheet near the fastener part may not be cut off.

To improve the proof stress, it is possible to insert reinforcing fibers into the waterproof sheet, reduce the fastener interval, and the like. Since it is the upper limit of yield strength, it is impossible to increase the yield strength itself. (In the case of peeling, since it peels off in order from the edge, measures such as widening the fusion width are invalid.)

Therefore, when the proof stress is insufficient, it is necessary to reduce the in-plane stress by narrowing the width of the waterproof sheet.

However, in that case, the number of rows for fixing the fasteners and the number of rows for the fusion bonding increase, so that there is a drawback that the construction cost becomes very high.

[0011]

Therefore, as a result of intensive studies, the inventors of the present invention have found that, as a result of the invention, a plurality of fasteners are appropriately provided along the edge of a waterproof sheet having a predetermined width. Are fastened in a line in a row at the interval of, and the waterproof sheet is fixed on the base portion, the edge of the waterproof sheet adjacent to the edge of the waterproof sheet is overlapped, and the row of fastener fixing points in the row is straddled. In this way, both polymerization points are pasted with an adhesive to form a fixing structure for a waterproof sheet having an inner joint portion and an outer joint portion, or on the edge of a waterproof sheet having a fusion resistance of a predetermined width. Along the line, fasten a plurality of fasteners in a row at appropriate predetermined intervals, fix the waterproof sheet on the base, then superimpose the edges of the adjacent waterproof sheet on it, and flatten it by the superposed location. -Shaped two inner hot air outlets and outer heat Insert the air outlet across the one row of fastener rows, and move the inner hot air outlets ahead of the outer hot air outlets to obtain hot air from the inner hot air outlets and the outer hot air outlets. By melting both polymerization points across the row, heat-bonding both polymerization points by pressure bonding immediately after this, by using both of these points as an inner joint part and an outer joint part by the method of fixing the waterproof sheet. , For example, even if the peeling action works, the force is applied to the inner joint part of the two places, but since it acts as shear stress, it can be made extremely strong, and the above-mentioned problems were solved. It is a thing.

[0012]

Embodiments of the present invention will be described below with reference to FIGS.

Reference numeral 1 denotes a waterproof sheet, which is made of synthetic resin, has waterproof properties, and is extremely durable against external force such as pulling. That tarpaulin 1
Is rolled into the field and used for the construction of the enclosure. Further, the waterproof sheet 1 has a strip-shaped rectangular shape in the unfolded state, and as shown in FIG. 1, one end in the width direction is the overlapped portion 1a and the other end side is the overlapped portion 1b.

A plurality of the waterproof sheets 1 are placed in parallel, and as shown in FIG. 1, the polymerized portions 1b are polymerized and fixed to the polymerized portions 1a of the adjacent waterproof sheets 1 and 1, and the roofs, walls, etc. The enclosure is constructed and is laid and constructed on the waterproof base portion 2 such as concrete, deck plate, ALC or the like.

The parts to be polymerized 1a and the parts to be polymerized 1b of the waterproof sheet 1 refer to parts related to the polymerization of the adjacent waterproof sheets 1 and 1, and the widths of the parts to be polymerized 1a and the parts to be polymerized 1b are equal to each other. It is not specified and may change depending on the construction situation. As shown in FIG. 1, a plurality of fasteners 3, 3, ... Are fastened to the superposed portion 1a of the laid waterproof sheet 1 and fixed onto the base portion 2.

The portion to be polymerized 1a of the waterproof sheet 1 is fixed to the base portion 2 by a fastener 3. Specifically, as shown in FIGS. As shown in FIG. 9, the plurality of fasteners 3, 3, ... Are fixed in a row along the longitudinal direction of the waterproof sheet 1 as they are left.

As shown in FIG. 1, the fastener 3 is composed of a fixing rod 3a such as a screw and a nail and a washer 3b.
The washer 3b is placed on the portion to be polymerized 1a of the waterproof sheet 1, and the fixing rod 3a is screwed on the washer 3b.
Or, if it is nail-shaped, it is driven in.

The next waterproof sheet 1 adjacent to the waterproof sheet 1 fixed to the underlying portion 2 is placed on the underlying portion 2, and the polymerized portion 1a of the waterproof sheet 1 already fixed on the underlying portion 2 is overlapped.
The polymerized portion 1b is polymerized on the top.

At the superposed portions of the adjacent waterproof sheets 1, 1, the superposed portion 1a and the superposed portion 1b are adhered to each other on both sides of the fasteners 3, 3 ,.

At the overlapping portion, as shown in FIG. 3, with the upper waterproof sheet 1 as a reference, the adhesive portion on the inner side (the center side in the width direction of the waterproof sheet 1) is the inner joint portion 4 and the outer side (the waterproof sheet). The fixed portion (on the edge side of 1) is referred to as the outer joint portion 5. That is, the fasteners 3, 3, ... Fixed in a line are surrounded by the inner joint portion 4 and the outer joint portion 5.

As a fixing means for the inner joint portion 4 and the outer joint portion 5, first, as shown in FIG. 7 as a first embodiment, an adhesive 6 is used for both joint portions.

As a second embodiment of the fixing means, as shown in FIG. 6, the inner joint portion 4 of the overlapping portion 1b of the waterproof sheet 1 is formed by the adhesive 6, and the outer joint portion 5 is heat-sealed. It will be done in.

Next, in the third embodiment of the fixing means, as shown in FIGS. 1 to 3, one row of fasteners 3,3 ... 4 and the outer joint portion 5 are formed by thermal fusion bonding 7,7.

Next, the heat fusion method 7 will be described.

First, the waterproof sheet 1 is placed on the base portion 2, and a plurality of fasteners 3, 3, ... Are fixed to the overlapped portion 1a along the longitudinal direction of the waterproof sheet 1 at appropriate intervals.

The inside hot air outlet 8 and the outside hot air outlet 9 are inserted from the overlapping portion, and the inside hot air outlet 8 and the outside hot air outlet 9 are waterproof as shown in FIG. It is configured to straddle the fasteners 3, 3, ... Arranged in a line in the overlapping position of the sheets 1, 1.

The inner hot air outlet 8 and the outer hot air outlet 9 are moved along the longitudinal direction of the waterproof sheet 1 as shown in FIG.

Then, hot air is jetted from the hot air outlet 8 for the inside and the hot air outlet 9 for the outside, and as shown in FIG. 12, while melting the surfaces between the waterproof sheets 1 and 1 above and below the overlapping portion,
Further, the waterproof sheet 1 on the upper side of the overlapping portion is pressure-bonded from above the overlapping portion 1b of the waterproof sheet 1 at the overlapping portion with the pressure bonding rollers 10 and 10.

At this time, the hot air outlet 8 for the inside moves ahead of the hot air outlet 9 for the outside.

Inner hot air outlet 8 and outer hot air outlet 9
Are arranged so as to be appropriately deviated in the front-rear direction. Specifically, when the overlapping portion is pressed by the pressure bonding rollers 10, 10, as shown in FIG. Is ahead of the inner hot air outlet 8 and the outer hot air outlet 9.

The hot air outlet 8 for inside and the hot air outlet 9 for outside are equipped with a hot air fusing device A. Specifically, the hot air outlet 8 for inside and the hot air outlet 9 for outside are mounted on the carriage.
Is provided and is connected to the hot air generators 11, 11.

The pressure rollers 10, 10 are provided so as to face the tips of the inner hot air outlet 8 and the outer hot air outlet 9. A brass roller 12 is arranged between the two pressure rollers 10, 10.

In the hot air fusing device A, the inner hot air outlet 8 and the outer hot air outlet 9 are inserted between the upper and lower waterproof sheets 1 and 1 at the overlapping portions of the adjacent waterproof sheets 1 and 1 for the inner side. It moves so as to precede the hot air outlet 8 and the outer hot air outlet 9.

When performing the heat-sealing work in the hot-air-sealing device A, in order to increase the pressure of the pressure roller 10 and the like,
A weight having an appropriate weight is often provided.

[0035]

According to the first aspect of the present invention, a plurality of fasteners 3, 3, ... Are fastened in a row along the edge of the waterproof sheet 1 having a predetermined width at appropriate intervals, and the waterproof sheet 1 is used as a base. The edge of the waterproof sheet 1 adjacent to the edge of the waterproof sheet 1 is fixed onto the portion 2, and the edge of the waterproof sheet 1 is superposed.
3, ... By fixing both polymerization points so as to straddle a row of fixing points with an adhesive 6 to form a waterproof sheet fixing structure in which an inner joint portion 4 and an outer joint portion 5 are formed,
In addition, the strength of the outer enclosure by the waterproof sheets 1, 1, ... Is improved, and secondly, excellent waterproofness can be obtained.

These effects will be described in detail. The fasteners 3, 3, ... In which the inner joint portion 4 and the outer joint portion 5 are arranged and fixed in a line at the overlapping portion between the adjacent waterproof sheets 1, 1 are fixed. Due to the surrounding state, even if the waterproof sheet 1 is pulled upward by negative pressure due to wind even after the construction is completed and the outer body is formed, the adjacent waterproof sheets 1, 1 The joint will not come off.

That is, when a negative pressure is applied to the waterproof sheet 1, three fasteners of the lower waterproof sheet 1 and the upper waterproof sheet 1 are joined to each other by the inner joining portions 4 at the joining portions of the adjacent waterproof sheets 1 and 1. Since they are present on the same arc through the portion 4, as shown in FIG. 5, a shear load acts on the upper waterproof sheet 1 and the lower waterproof sheet 1, and in this case, the inner joint The entire joint width of the portion 4 receives a uniformly distributed load, and the durability at the overlapping portion becomes good.

In the conventional structure, as shown in FIG. 8, the overlapping portions of the adjacent waterproof sheets a, a are joined only on one side of the fastener row (the outer end side of the upper waterproof sheet a), When a negative pressure is applied to the waterproof sheet a, the load applied to the location is not a shearing force but a peeling load, so that the adjacent waterproof sheets a and a are easily separated from each other.

However, in the present invention, the peeling load in the above conventional load state is converted into the shear load this time, whereby the durability is remarkably improved.

Further, since the inner joint portion 4 and the outer joint portion 5 are present at the overlapping portions of the adjacent waterproof sheets 1 and 1, the inner joint portion 4 serves to connect the adjacent waterproof sheets 1 and 1, and The joint portion 5 ensures waterproofness, and since the outer joint portion 5 is not so heavily loaded, the waterproofness is less likely to deteriorate and the durability can be improved.

Further, since the inner joint portion 4 and the outer joint portion 5 are made of the adhesive agent 6, only the adhesive agent 6 is applied for the construction, and a large-scale device can be eliminated.

Next, in the second aspect, a plurality of fasteners 3, 3, ... Are fastened in a line at a proper interval along the edge of the waterproof sheet 1 having a predetermined width and having a fusion property, The waterproof sheet 1 is fixed on the base portion 2, the edge of the waterproof sheet 1 adjacent to the edge of the waterproof sheet 1 is polymerized, and the waterproof sheet 1, 1 fasteners 3, 3, ... By fixing the structure of the waterproof sheet, the outer overlapped portion of the row is formed as the outer joint portion 5 by thermal fusion bonding and the inner overlapped portion of the row is formed as the inner joint portion 4 by the adhesive 6 so as to straddle the row. In addition to the effect similar to that of claim 1, at the overlapping portions of the adjacent waterproof sheets 1 and 1, the outer joint portion 5 is heat-sealed 7 and the inner joint portion 4 is joined by the adhesive 6. First, the outer joint part 5 is in a state that it can be used immediately after the completion of construction by heat fusion 7. Next, which first exhibits waterproof performance, until the joining by adhesive 6 of the inner joint portion 4 sufficiently effective, can protect the inner joint portion 4 from the rain or the like.

Further, in the present invention, only the outer joint portion 5 is heat-sealed 7, and since there is only one place, there is an advantage that the work can be performed by the conventional hot-air welding device.

Next, in claim 3, a plurality of fasteners 3, 3, ... Are fastened in a line at appropriate intervals along the edge of the waterproof sheet 1 having a predetermined width and having a fusion property, The waterproof sheet 1 is fixed on the base portion 2, the edge of the waterproof sheet 1 adjacent to the edge of the waterproof sheet 1 is superposed, and the one row of fasteners 3, 3 ,. With the fixing structure of the waterproof sheet having the inner joint portion 4 and the outer joint portion 5 formed by heat fusion 7 at both polymerization positions, the adjacent waterproof sheet 1, in addition to the effect similar to that of claim 1, can be obtained. Since the inner joint 4 and the outer joint 5 are joined by means of the heat-sealing 7 means, the welding of No. 1 can be put into use immediately after the work of the heat-sealing 7 is completed.

Further, since all the joints are heat-sealed 7, the reliability can be maximized with respect to watertightness, jointability and the like.

Next, in the present invention, a plurality of fasteners 3, 3, ... Are fastened in a line at a predetermined interval along the edge of the waterproof sheet 1 having a predetermined width and having a fusion property. ,
The waterproof sheet 1 is fixed onto the base portion 2, then the edges of the adjacent waterproof sheets 1 and 1 are superposed thereon, and two flat hot air outlets 8 for inside and outside are superposed by the superposed portions. Fasteners 3 with hot air outlets 9 arranged in a line
It is inserted across a row, and the hot air outlet 8 for the inside is moved ahead of the hot air outlet 9 for the outside, and the hot air from the hot air outlet 8 for the inside and the hot air outlet 9 for the outside is used to cross the row. Both polymerization points are melted, and immediately thereafter, both polymerization points are heat-sealed 7 and both of these points are used as the inner joint portion 4 and the outer joint portion 5. When the overlapping portions of the waterproof sheets 1 and 1 are joined, the lower waterproof sheet 1 and the upper waterproof sheet 1 of the two overlapping portions are simultaneously formed at the inner hot air outlet 8 and the outer hot air outlet 9 at the same time. By inserting between them to generate hot air, and immediately after this, pressure bonding is performed, so that an extremely quick heat fusion 7 can be achieved.

Further, an inner hot air outlet 8 and an outer hot air outlet 9 are arranged on both sides of the fasteners 3, 3, ... Lined and fixed in one row, and the inner hot air outlet 8 is the outer hot air outlet. 9 always moves ahead of 9 and moves by following this to perform crimping, so that there is a step between the crimping point and the two hot air outlets 8 for the inside and the hot air outlets for the outside. A fold w is generated. Specifically, a fold w on the waterproof sheet 1 is generated on the line connecting the tips of the inner hot air outlet 8 and the outer hot air outlet 9. However, since the hot air outlet 8 for the inside precedes the hot air outlet 9 for the outside, the fold w that occurs in the upper waterproof sheet 1 always precedes the seven heat-sealing points ( (See FIG. 9), and it is possible to prevent excessive force from being applied when the folded shape of the sheet 1 is extremely natural. Therefore, even if two sheets are heat-sealed simultaneously, 7
It is possible to provide an orderly fixing method in which wrinkles do not exist on the waterproof sheet 1.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of the present invention.

FIG. 2 is a vertical sectional front view of the present invention.

FIG. 3 is a sectional view of a main part of the present invention.

FIG. 4 is a vertical sectional front view showing a state in which a negative pressure is applied to the waterproof sheet.

FIG. 5 is an enlarged sectional view of a main part of FIG. 4;

6 and 7 are cross-sectional views of the essential parts of another embodiment of the present invention.

FIG. 8 is an enlarged cross-sectional view of a main part where negative pressure is applied to the conventional technique.

FIG. 9 is a plan view showing a state of heat fusion work.

FIG. 10 is a perspective view showing a heat fusion work state.

FIG. 11 is a side view showing a heat-sealing work state.

FIG. 12 is an enlarged main part diagram showing the heat fusion work.

FIG. 13 is a side view of the hot air fusion device.

FIG. 14 is a plan view of the hot air fusion device.

[Explanation of symbols]

 1 1 ... Waterproof sheet 2 2 ...... Base part 3 3 ...... Zipper 4 4 …… Inner joint part 5 5 …… Outer joint part 6 6 …… Adhesive 7 7 …… Heat fusion 8 8 …… For inside Hot air outlet 9 9 ... Hot air outlet for outside

Claims (4)

(57) [Claims] 1. A plurality of fasteners are fastened in a row along an edge of a waterproof sheet having a predetermined width at appropriate intervals, the waterproof sheet is fixed onto a base portion, and the waterproof sheet is attached to the edge of the waterproof sheet. It is characterized in that the edges of adjacent waterproof sheets are polymerized, and both polymerization points are attached with an adhesive so as to straddle the row of fastener fixing points in a row, and the inner joint portion and the outer joint portion are formed. The fixed structure of the waterproof sheet. 2. A plurality of fasteners are fastened in a row at appropriate intervals along an edge of a waterproof sheet having a fusion resistance of a predetermined width, and the waterproof sheet is fixed on a base portion to provide the waterproofing. Overlap the edge of the tarpaulin adjacent to the edge of the sheet, straddle the row of fastener fixing points of the tarpaulin overlap area, and the outside overlapped area of the row is the outer joint by heat fusion, and the inside of that row A waterproof sheet fixing structure, characterized in that the polymerized part is an inner joint part made of an adhesive. 3. A plurality of fasteners are fastened in a row at appropriate intervals along an edge of a waterproof sheet having a fusion resistance of a predetermined width, and the waterproof sheet is fixed on a base portion to provide the waterproofing. It is characterized in that the edge of the waterproof sheet adjacent to the edge of the sheet is superposed, and both the superposed points are made into the inner joint portion and the outer joint portion by heat fusion so as to straddle the row of fastener fixing portions in a single row. The fixed structure of the waterproof sheet. 4. A plurality of fasteners are fastened in a row at appropriate predetermined intervals along an edge of a waterproof sheet having a fusion resistance of a predetermined width, and the waterproof sheet is fixed on a base portion, and then the waterproof sheet is fixed. The edge of the adjacent waterproof sheet is superposed on it, and two flat hot air outlets for the inside and the hot air outlet for the outside are inserted by straddling the fastener row in the one row, and the inside The hot air outlet for the outside is moved ahead of the hot air outlet for the outside, and the hot air from the hot air outlet for the inside and the hot air outlet for the outside melts both polymerization points that straddle the row, and immediately after this, pressure bonding is performed. A method for fixing a waterproof sheet, characterized in that both polymerization points are heat-sealed together, and both of these points are applied as an inner joint portion and an outer joint portion.