Pool waterproofing methods

Abstract

To solve the problem in which, since a relative displacement is generated between an end part of a metal fitting and a waterproof sheet, a fissure is easily generated in the waterproof sheet due to wearing by an end part side portion of the metal fitting, and when the waterproof sheet is damaged, the possibility of penetrating water between the waterproof sheet and the waterproof substrate is increased.SOLUTION: A pool waterproof method of waterproofing a water tank part 11 in a pool with a waterproof sheet 2 is the pool waterproof method includes the steps of: applying an adhesive 4 to a waterproof substrate 111 of the water tank part 11; covering the waterproof substrate 111 with the waterproof sheet 2; and pressing and rolling toward the waterproof substrate 111 from a surface side of the waterproof sheet 2.SELECTED DRAWING: Figure 1

Description

Technical Field

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[0001] The present invention relates to a pool waterproofing method and a squeegee.

Background Art

[0002] Conventionally, as a pool waterproofing method, there is one described in Patent Document 1. Patent Document 1 describes a pool waterproofing method in which a plurality of fixtures are distributed at separated positions and adhesively fixed to a waterproof base, and a waterproof sheet is fixed to the floor through the plurality of fixtures.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in Patent Document 1, since the waterproof sheet is fixed to the floor through the fixtures and is not directly fixed to the waterproof base, a gap is likely to be formed between the waterproof sheet and the waterproof base. Due to the change in the water level in the water tank part, the water pressure applied to the waterproof sheet changes, so relative movement is likely to occur between the end part of the fixing metal fitting and the waterproof sheet due to the gap between the waterproof sheet and the waterproof base. As a result, the waterproof sheet is rubbed against the end part side of the fixing metal fitting, and cracks are likely to occur. Also, when the waterproof sheet is damaged, there is a high possibility that water will enter between the waterproof sheet and the waterproof base.

[0005] Therefore, an object of the present invention is to provide a pool waterproofing method characterized in that a gap is unlikely to be formed between the waterproof sheet and the waterproof base, cracks are unlikely to occur in the waterproof sheet, and even when cracks occur, water is unlikely to penetrate.

Means for Solving the Problems

[0006] The pool waterproofing method according to the present invention is a pool waterproofing method that waterproofs the water tank portion of a swimming pool using a waterproof sheet, and includes a coating step of applying an adhesive of 750 g / m2 or more to the waterproof base of the water tank portion, a sheet laying step of covering the waterproof base with the waterproof sheet, and a rolling step of rolling the waterproof sheet from the surface side against the waterproof base. Furthermore, in the coating step, the adhesive is applied using a trowel such that the cross-sectional area of ​​the peaks of the coating layer is larger than the cross-sectional area of ​​the valleys of the coating layer, and in the compaction step, the peaks are flattened, the adhesive flows into the valleys, and compaction is performed so that the remaining valleys are not continuous. It's at a single point.

[0007] With this configuration, gaps are less likely to form between the waterproof sheet and the waterproof substrate, so even if the water level in the tank changes, relative movement between the end of the fixing bracket and the waterproof sheet is less likely to occur. Consequently, cracks are less likely to form in the waterproof sheet, and even if cracks do occur, water is less likely to penetrate. Furthermore, this configuration results in a relatively small cross-sectional area in the valleys of the coating layer, making it less likely for water channels (strip-like gaps) to form between the waterproofing sheet and the waterproofing substrate after application. This prevents rainwater from seeping between the waterproofing sheet and the waterproofing substrate, which could cause the adhesive components to dissolve and diffuse.

[0008] In the present invention, the adhesive is preferably a solvent-free adhesive. 。

[0009]

[0010] In the present invention, in the coating step, the adhesive is applied using a trowel. The fabric layer is stretched horizontally, and linear marks with a roughly trapezoidal cross-sectional shape are formed on the adhesive coating layer. This is preferable. In the present invention, it is preferable to apply the adhesive in the coating step such that the ratio of the cross-sectional area of ​​the valley portion to the cross-sectional area of ​​the peak portion is 0.8 times or less.

[0011] With this configuration, the peaks of the coating layer spread evenly into the valleys, eliminating the need to apply excess adhesive, making it economical.

[0012] In the present invention, the water tank portion has a bottom portion and a side wall portion erected from the bottom portion, and it is preferable that the waterproof sheet is adhered to the waterproof base of the side wall portion with the adhesive.

[0013] Handrails, ladders, and other fittings are often mechanically fixed to the wall. Rainwater can easily seep between the waterproofing sheet and the waterproofing substrate in areas where the fittings are mechanically fixed to the wall and the details tend to be complex. With this configuration, by adhesively fixing the waterproofing sheet and the waterproofing substrate to the wall in areas where rainwater can easily seep in, it becomes more difficult for rainwater to seep between the waterproofing sheet and the waterproofing substrate.

[0014] In the present invention, the comb trowel has a plurality of comb teeth arranged at intervals and is capable of forming linear marks on the adhesive coating layer by spreading the adhesive, wherein the comb teeth have a width of 2 mm or more and 5 mm or less, a height of 1 mm or more and 7 mm or less, and are configured such that, in a plan view, the visible area of ​​the interval is larger than the visible area of ​​the comb teeth.

[0015] Through ingenious experiments conducted by the inventor, it was found that when the waterproof sheet is compacted with adhesive applied, spreading the adhesive with the present invention's trowel causes the adhesive in the peaks to fill the valleys, making it difficult for water channels to form in the adhesive coating layer. With this configuration, the cross-sectional area of ​​the valleys in the coating layer becomes relatively small, making it difficult for water channels (strip-like gaps) to form between the waterproof sheet and the waterproof substrate after application in the adhesive coating layer. This prevents rainwater from entering the water channels between the waterproof sheet and the waterproof substrate, and prevents the adhesive components from dissolving and diffusing into the water reservoir.

[0016] In the present invention, it is preferable that the comb trowel is formed such that the ratio of the visible area of ​​the comb teeth to the visible area of ​​the spacing is 0.8 times or less.

[0017] With this configuration, the peaks of the coated layer spread evenly into the valleys through compaction after application, eliminating the need to apply excess adhesive, making it economical.

[0018] In the present invention, the width of the spacing between the comb-shaped trowels is preferably 3 mm or more and 16 mm or less.

[0019] If the width of the intervals is too narrow, the peaks of the coating layer will be flattened immediately before rolling, and an air layer will be formed in the coating layer. When an air layer is formed, the waterproof sheet is likely to float from the waterproof base. Also, if the width of the intervals is too wide, the adhesive in the peaks will not be sufficiently filled into the valleys, and water channels are likely to be formed in the coating layer of the adhesive. According to this configuration, by arranging the comb teeth at an appropriate interval, it is possible to make it difficult for the waterproof sheet to float from the waterproof base and difficult for water channels to be formed.

Brief Description of the Drawings

[0020] [Figure 1] It is a longitudinal sectional view of a pool showing the pool waterproofing method of the present invention. [Figure 2] It is a plan view showing the comb of the present invention [Figure 3] It is a drawing showing the coating process in the pool waterproofing method of the present invention [Figure 4] It is a drawing showing the rolling process in the pool waterproofing method of the present invention [Figure 5] It is a drawing showing a cross section of the coating layer of the adhesive in the rolling process. [Figure 6] It is a drawing showing a method for verifying the watertightness of the coating layer. [Figure 7] It is a drawing showing the verification result.

Modes for Carrying Out the Invention

[0021] Hereinafter, the pool waterproofing method and the comb will be described based on the drawings. The pool waterproofing method is a method of waterproofing the water tank part in a pool using a waterproof sheet, and includes a coating process of applying an adhesive to the waterproof base of the water tank part, a sheet laying process of covering the waterproof base with the waterproof sheet, and a rolling process of rolling from the surface side of the waterproof sheet onto the waterproof base. That is, the pool waterproofing method is to cover the pool with a waterproof sheet and perform waterproof treatment during renovation.

[0022] In this embodiment, the comb is a spatula that can form linear marks in the coating layer of the adhesive by spreading the adhesive in the coating process of the pool waterproofing method.

[0023] In the following explanation, regarding the pool waterproofing method and the trowel, the direction of arrow U shown in Figures 1 and 2 will be referred to as "upward," the direction of arrow D as "downward," the direction of arrow L as "leftward," and the direction of arrow R as "rightward."

[0024] [Swimming pool] Pool 1 is a facility for swimmers to swim in. In this embodiment, Pool 1 is made of concrete. However, Pool 1 may also be made of steel, aluminum, or stainless steel.

[0025] Pool 1 includes a water tank section 11 for storing water. The water tank section 11 is formed in a concave shape. The tank section 11 comprises a bottom section 11a and a side wall section 11b. The side wall section 11b is erected from the bottom section 11a. The tank section 11 includes an inner corner section 11c, which is the corner area where the bottom section 11a and the side wall section 11b intersect.

[0026] Hereinafter, the surface of the water tank section 11, namely the bottom section 11a, the side wall section 11b, and the corner section 11c, will be referred to as the waterproof base 111.

[0027] [Waterproof sheet] The waterproof sheet 2 is a sheet-like component. The waterproof sheet 2 is formed from a resin sheet containing a resin material to prevent water from passing through. In this embodiment, it is a vinyl chloride waterproof sheet. The resin material may also be a polyolefin resin, an ethylene vinyl acetate copolymer, or the like, and these can be used in combination.

[0028] [Fixing tool] The fastener 3 is an L-shaped member. In this embodiment, the fastener 3 is made of stainless steel plate. However, the material of the fastener 3 may be PVC-coated steel plate, other steel plates, aluminum, etc.

[0029] The fastener 3 is a long member with a roughly L-shaped cross-section. The fastener 3 comprises a flat first part 3a and a second part 3b perpendicular to the first part 3a.

[0030] 〔glue〕 Adhesive 4 is preferably a solvent-free type whose components do not easily dissolve in the water of the aquarium section 11. In this embodiment, adhesive 4 is a solvent-free epoxy adhesive. The adhesive may also be an acrylic adhesive or one that uses at least one of these as the main material.

[0031] [Combing tool] The comb-shaped trowel 6 is a flat plate-shaped component used to spread the adhesive 4. By spreading the adhesive 4 using the comb-shaped trowel 6, linear marks can be formed on the adhesive 4.

[0032] As shown in Figure 2, the comb iron 6 comprises a gripping portion 62 for being held by the user and comb teeth 61 for spreading the adhesive 4. The comb teeth 61 are formed at the end opposite the gripping portion 62. The comb teeth 61 are roughly trapezoidal in shape. Multiple comb teeth 61 are arranged in the left-right direction with a gap 63 between them.

[0033] As shown in Figure 2, a virtual line A is set to extend left and right along the tip of the comb teeth 61. A virtual line B is set to extend left and right along the base of the comb teeth 61. The spacing 63 is the region enclosed by virtual line A, virtual line B, and the left and right sides of the comb teeth 61. The spacing 63 is roughly trapezoidal.

[0034] As shown in Figure 2, the width of the tip of the comb teeth 61 is denoted as width w1. The width of the base of the comb teeth is denoted as width w2. The spacing between the tips of the comb teeth 61 is denoted as width p2 (corresponding to the spacing width p in this invention). The height of the comb teeth 61 is denoted as height h. Height h is the distance between virtual line A and virtual line B.

[0035] The width w1 is 1 mm or more and 4 mm or less. The width w2 is 2 mm or more and 5 mm or less. The width p1 is 4 mm or more and 18 mm or less. The width p2 (width p) is 3 mm or more and 16 mm or less. The height h is 1 mm or more and 7 mm or less.

[0036] In this embodiment, the width w of the comb teeth is the larger of the width w1 (width at the tip) and the width w2 (width at the base). The width w is 2 mm or more and 5 mm or less. The height h is between 1 mm and 7 mm. The visible area of ​​the spacing 63 is larger than the visible area of ​​the comb teeth 61. The visible surface area is the area in a plan view. The comb trowel 6 is formed such that the ratio of the visible area of ​​the comb teeth 61 to the visible area of ​​the spacing 63 is 0.8 times or less.

[0037] [Waterproofing methods for swimming pools] As shown in Figures 1, 3, and 4, the pool waterproofing method of this embodiment includes an application step of applying adhesive 4 to the waterproof base 111 of the water tank section 11, a sheet laying step of covering the waterproof base 111 with a waterproof sheet 2, and a compaction step of compacting the waterproof base 111 from the surface side of the waterproof sheet 2.

[0038] [Coating process] In the coating process, adhesive 4 is applied to the entire side wall portion 11b. In other words, adhesive 4 is applied to the waterproof base 111 of the side wall portion 11b. The applied adhesive 4 becomes the coating layer 5. The coating layer 5 is spread horizontally with a trowel 6. Preferably, the adhesive 4 is spread with the tip surface of the trowel teeth in contact with the waterproof base 111. This makes it possible to form linear marks with a roughly trapezoidal cross-sectional shape in the coating layer 5 of the adhesive 4.

[0039] As shown in Figure 3, the coating layer 5 spread by the comb iron 6 has a comb-like cross-section with valleys 5b and peaks 5a. The valleys 5b are formed by the comb teeth 61. The peaks 5a are formed by the spacing 63. The cross-sectional area of ​​the peaks 5a of the coating layer 5 is larger than the cross-sectional area of ​​the valleys 5b of the coating layer 5. Specifically, the ratio of the cross-sectional area of ​​the valleys 5b to the cross-sectional area of ​​the peaks 5a is 0.8 times or less. This prevents variations in the amount of adhesive 4 applied and allows the amount to be adjusted to an appropriate level.

[0040] The amount of adhesive 4 applied is 400 g / m2 or more and 2100 g / m2 or less. Preferably, it is 700 g / m2 or more. If the amount applied is too little, areas without an adhesive layer 5 may occur between the waterproof sheet 2 and the waterproof substrate 111, making it difficult to bond the waterproof sheet 2 and the waterproof substrate 111. Also, the cross-sectional area of ​​the peaks 5a becomes smaller than the cross-sectional area of ​​the valleys 5b. As a result, the amount of adhesive 4 that flows into the valleys 5b during compaction is insufficient, and a certain amount of the valleys 5b remains after compaction. The remaining amount of the valleys 5b creates a channel through which rainwater can enter between the waterproof sheet 2 and the waterproof substrate 111.

[0041] [Sheet laying process] In the sheet laying process, the waterproof base 111 is covered with the waterproof sheet 2. The waterproof sheet 2 is bonded to the waterproof base 111 of the side wall portion 11b with adhesive 4. The waterproof sheet 2 is also fixed to the bottom portion 11a with fasteners 3.

[0042] As shown in Figure 1, the fastener 3 is provided along the inner corner portion 11c. The first part 3a is provided along the bottom portion 11a. The second part 3b is provided along the side wall portion 11b. In this embodiment, the fastener 3 is anchored to the waterproof substrate 111 by fixing bolts (not shown). The fastener 3 may also be fixed to the waterproof substrate 111 by thermal fusion or solvent welding, or the fixing bolts (not shown) may be fixed to the waterproof substrate 111 by thermal fusion or solvent welding.

[0043] As shown in Figures 4 and 5, the waterproof sheet 2 covers the side wall portion 11b. The waterproof sheet 2 covering the side wall portion 11b is overlapped on top of the fastener 3 at the inner corner portion 11c. The waterproof sheet 2 and the fastener 3 are fixed together by heat fusion or solvent welding. The waterproof sheet 2 is folded back and fixed at the upper end of the water tank portion 11. The waterproof sheet 2 is fixed to the waterproof base 111 at the inner corner portion 11c. In the floor portion 11a, the waterproof sheet 2 is positioned along the waterproof base 111 and is not fixed.

[0044] [Compaction process] In the compaction process, the waterproofing sheet 2 is compacted against the waterproofing substrate 111 from the surface side using a compaction tool 7. In this embodiment, the compaction tool 7 is a manually operated compaction roller 71. The compaction roller 71 rolls across the surface of the waterproofing sheet 2. As a result, the waterproofing sheet 2 is compacted from the surface side.

[0045] As shown in Figure 5, the compaction crushes the peaks 5a. When the peaks 5a are crushed, a sufficient amount of adhesive 4 flows into the valleys 5b. This makes it less likely for valleys 5b to remain in the coated layer 5 after compaction. Because fewer valleys 5b remain, it is less likely for water channels to form between the waterproof sheet 2 and the waterproof substrate 111 for rainwater to enter.

[0046] [Regarding the watertightness of coating layer 5] The watertightness of the adhesive 4 coating layer 5 was verified. A transparent polyvinyl chloride waterproof sheet was used as the waterproof sheet 2. Epoxy resin adhesive A-555 (manufactured by Sanyurec) was used as the adhesive 4. A manual compaction roller 71 was used as the compaction tool 7. An acrylic resin trowel 6 was used.

[0047] As samples of the comb iron 6, ten types of comb irons 6 with different comb tooth shapes 61 were prepared. They are referred to as comb irons 6A, 6B, 6C, 6D, 6E, 6F, 6G, 6H, 6I, and 6J, respectively.

[0048] As shown in Figure 6, adhesive 4 was applied to an acrylic resin board serving as a waterproof base 111. The coating layer 5 was spread using each sample. The waterproof base 111 was covered with a transparent waterproof sheet 2 and compacted with a compaction roller 71. An opening 21 was formed on the surface of the waterproof sheet 2, and a PVC socket 23 connected to a compressor 22 was joined to the opening 21. Colored water 24 was injected into the PVC socket 23. Pressurization was applied with the compressor 22, and the colored water 24 was poured into the coating layer 5 through the opening 21.

[0049] The pressure at which the colored water 24 is poured is 0.05 MPa, which is higher than the water pressure of a typical swimming pool. The coated layer 5 was subjected to pressure for 30 minutes to verify whether the colored water 24 diffused into it. If the colored water 24 did not diffuse, the coated layer 5 was evaluated as having watertightness. The results are shown in Figure 7.

[0050] As shown in Figure 7, diffusion of colored water 24 into the coating layer 5 was confirmed for trowels 6G, 6H, and 6I. On the other hand, diffusion of colored water 24 into the coating layer 5 was not confirmed for trowels 6A, 6B, 6C, 6D, 6E, 6F, and 6J.

[0051] As a result, it was found that the amount of adhesive 4 applied and the presence or absence of comb marks after compaction affected the diffusion of the colored water 24. The more adhesive 4 applied, the less the colored water 24 diffused. Specifically, it was found that the colored water 24 diffused less when the application amount was 750 g / m2 or more.

[0052] It was observed that the colored water 24 did not diffuse easily because almost no comb marks remained in the coating layer 5 after compaction. The state in which almost no comb marks remain means that the valleys 5b remaining after compaction are not continuous, making it difficult to form channels for the colored water 24 in the coating layer 5.

[0053] It was found that the presence or absence of comb-like patterns after compaction was related to the shape of the comb teeth 61. Therefore, it was found that the presence or absence of diffusion of the colored water 24 was related to the shape of the comb teeth 61 of the trowel 6.

[0054] Regarding the shape of the comb teeth 61 of the comb iron 6, it was found that the higher the height h of the comb teeth 61, the less comb marks remain. Specifically, the height h of the comb teeth 61 is preferably 1.6 mm or more and 7 mm or less. In addition, it was found that the smaller the width p of the spacing 63, the less comb marks remain. Specifically, it is preferably 3 mm or more and 16 mm or less.

[0055] From the above results, it was found that the amount of adhesive 4 applied, the presence or absence of comb marks after compaction, and the shape of the comb teeth 61 of the trowel 6 all affect the watertightness of the adhesive 4 coating layer 5.

[0056] [Alternative Embodiment] (1) In the above embodiment, the waterproof sheet 2 was formed from a single sheet-like member. The waterproof sheet 2 may be divided into a sheet for the bottom and a sheet for the side walls, or it may be further divided into smaller parts.

[0057] (2) In the above embodiment, an example was described in which the fastener 3 is a long member installed along the inner corner 11c. The fastener 3 does not necessarily have to be a long member, and multiple fasteners may be provided along the inner corner 11c. Also, the shape of the fastener 3 does not have to be approximately L-shaped, but any shape is acceptable as long as it can secure the waterproof sheet 2.

[0058] (3) In the above embodiment, an example was described in which the comb iron 6 has trapezoidal comb teeth 61. The shape of the comb teeth 61 may be square or semicircular. Also, the comb teeth 61 may not be plate-shaped but may bulge in the direction of spreading the adhesive 4.

[0059] (4) In the above embodiment, an example was described in which the fasteners 3 are provided at all four inner corners 11c. The fasteners 3 may be provided only at a pair of opposing inner corners 11c.

[0060] (5) In the above embodiment, the water tank portion 11 was rectangular parallelepiped in shape. The water tank portion 11 may also be cylindrical, have curved side walls 11b, or have an elliptical bottom portion 11a.

[0061] (6) In the above embodiment, the waterproof sheet 2 is fixed to the bottom 11a by fasteners 3 and adhered to the side wall 11b by adhesive 4. The waterproof sheet 2 may also be fixed to the bottom 11a and the side wall 11b (i.e., the entire water tank 11) by adhesive 4.

[0062] (7) In the above embodiment, an example was described in which the adhesive 4 is applied and then the coated layer 5 is spread with a comb-shaped trowel 6 to form linear marks. However, the invention is not limited to this, and after applying the adhesive 4, the coated layer 5 may be spread with a flat trowel and then further spread with a comb-shaped trowel 6 to form linear marks.

[0063] (8) In the above embodiment, an example was described in which the waterproof base 111 is directly covered with the waterproof sheet 2. However, the waterproof base 111 may be covered with the waterproof sheet 2 after a cushioning material or the like is placed between it and the waterproof sheet 2.

[0064] (9) In the above embodiment, the pool waterproofing method involves covering the pool with a waterproof sheet and applying waterproofing treatment during renovation. The pool waterproofing method may also be used when constructing a new pool. [Industrial applicability]

[0065] This invention can be used for a pool waterproofing method that uses a waterproof sheet to waterproof the water tank section of a swimming pool, and also for a trowel. [Explanation of Symbols]

[0066] 1: Pool 11: Aquarium section 11a: Bottom 11b: Side wall part 111: Waterproof undercoat 2: Waterproof sheet 4: Adhesive 5: Coating layer 5a: Yamabe 5b: Tanibe 6: Comb trowel 61: Comb teeth 63: Interval h: Height of the comb teeth p: width of the interval w: width of the comb teeth

Claims

1. A method for waterproofing a swimming pool by using a waterproof sheet to waterproof the water tank section of the pool, The coating process involves applying an adhesive of 750 g / m² or more to the waterproof base of the water tank section, A sheet laying step in which the aforementioned waterproof sheet covers the aforementioned waterproof base, This includes a rolling step in which pressure is applied from the surface side of the waterproof sheet to the waterproof substrate, In the coating step, the adhesive is applied using a trowel such that the cross-sectional area of ​​the peaks of the coating layer is greater than the cross-sectional area of ​​the valleys of the coating layer. A pool waterproofing method, wherein in the compaction process, the peaks are crushed, the adhesive flows into the valleys, and compaction is performed so that the remaining valleys are not continuous.

2. The pool waterproofing method according to claim 1, wherein the adhesive is a solvent-free type adhesive.

3. The pool waterproofing method according to claim 1, wherein in the coating step, the adhesive is spread horizontally using the trowel to form linear marks with a substantially trapezoidal cross-sectional shape on the coating layer of the adhesive.

4. The pool waterproofing method according to claim 1, wherein in the coating step, the adhesive is applied such that the ratio of the cross-sectional area of ​​the valley portion to the cross-sectional area of ​​the peak portion is 0.8 times or less.

5. The tank section has a bottom and side walls erected from the bottom. The pool waterproofing method according to any one of claims 1 to 4, wherein the waterproof sheet is bonded to the waterproof substrate of the side wall portion by the adhesive.

6. The comb-shaped trowel has a plurality of comb teeth arranged at intervals, and is capable of forming linear marks on the coated layer of the adhesive by spreading the adhesive, The aforementioned comb teeth have a width of 2 mm or more and 5 mm or less, and a height of 1 mm or more and 7 mm or less. The pool waterproofing method according to claim 1, wherein, in a plan view, the visible area of ​​the spacing is larger than the visible area of ​​the comb teeth.

7. The pool waterproofing method according to claim 6, wherein the comb trowel is formed such that the ratio of the visible area of ​​the comb teeth to the visible area of ​​the spacing is 0.8 times or less.

8. The pool waterproofing method according to claim 6 or claim 7, wherein the width of the spacing between the comb-shaped trowels is 3 mm or more and 16 mm or less.

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