JPH06307032A - Finishing water-proof sheet for rise-up part and process of finishing water-proofing work for rise part using thereof - Google Patents

Abstract

PURPOSE:To prevent leakage of water and enhance the workability by carrying out water-proofing work for a water-proof sheet transversely of the water-proof sheet with the use of a corner member having a right-angled triangular shape or a truncated right-angle triangular shape so as to reduce the number of stacked sheets. CONSTITUTION:A corner member 4 is partly cut off at one end part of a water- proof sheet 1, and accordingly, a joint part is smoothly formed during water proof sheets B being successively built up. In this case, a self-adhesive layer is formed over a part of the outer surface of the water-proof sheet along the end surface of the corner member 4 on the side remote from the cut-off part, and is then covered thereover with a peel-off sheet. When it is stuck to a building, the self-adhesive layer and the peel-off sheet are provided on the finishing water-proof sheet side for a rise-up part, and one of associated face fasteners is fixed to a corresponding part of the building. Alternatively, a double-surface adhesive tape or sheet is previously applied on a part of the building where the finishing water-proof sheet for the rise-up part is applied.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a finish waterproof sheet for a rising portion and a finishing waterproof construction method for the rising portion using the same.

[0002]

[Prior art and its problems] The waterproofing method is an asphalt waterproofing thermal method in which solid asphalt is melted in a pot at a construction site, and a plurality of asphalt roofings are laminated with the adhesive to form a waterproof layer. Asphalt waterproof cooling method to form a waterproof layer by stacking multiple asphalt roofing with layers, vulcanized rubber sheet, apply adhesive to both the surface and base surface, finish with only one sheet, urethane There is a urethane coating waterproofing method in which the coating material is applied twice to finish. Generally, waterproofing work is divided into a flat part such as a rooftop and a rising part, and there is almost no factor that hinders the worker's action on the flat part, so that it is possible to perform some efficient work in each waterproofing method,
In addition, high work accuracy can be obtained, and satisfactory waterproofing work can be achieved from the viewpoint of waterproofness and appearance. However, since the waterproof sheet is bent at the corners and the waterproof material is applied to the vertical surface having a relatively low height at the rising portion, it is very difficult to work, and the work efficiency is reduced to ⅕ or less. In the case of asphalt thermal construction method, it is necessary to have a great deal of skill to stack multiple roofing layers on a vertical surface while flowing high temperature asphalt, and the finished asphalt roofing surface is contaminated with asphalt. It also poses a problem in terms of finish. Even asphalt roofing with a self-adhesive layer requires considerable construction technology to stick it on a vertical surface while peeling off the release paper. Due to the poor workability due to the rising surface of the seat waterproof, it is difficult to obtain sufficient construction accuracy and it is easy to create incomplete waterproof parts, and since it is a single layer waterproof, water leakage accidents at the rising part occur frequently. There is. For waterproofing the film, apply the work to the vertical surface in 2
It takes a lot of skill to repeat it. Moreover, since the coating film has a self-leveling property in the flat portion, a smooth finish can be obtained, but in the vertical surface, it is difficult to obtain a smooth finish surface unless the brush application technique is very good. For roofing with a self-adhesive layer and waterproofing of the sheet, if the base is finished accurately, cut the sheet according to the rising height and stick it horizontally for a long time to improve workability and reduce joints Will increase. However, in reality, since the base has considerable unevenness, wrinkles are generated on the way, and the long sticking of about 2 m long is the limit. As described above, in the case of the sheet waterproofing method, there is a great concern about water leakage due to the single-layer waterproofing at the rising portion, and in the case of the coating film waterproofing method, there is a problem in the finish surface. In the case of the construction method, since it is a multi-layer laminated construction method, it is possible to obtain the same reliability as a flat surface in terms of waterproofness, but the work efficiency is significantly reduced, and the operator's physical fatigue is also remarkable. Furthermore, the decrease in the number of skilled waterproof engineers is a big problem, and in particular, there is a strong demand for simplification of the construction work on the rising surface of the asphalt waterproof thermal method.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a finishing waterproof sheet for a rising portion, which is particularly suitable for waterproofing a vertical surface, and a finishing waterproofing method for a rising portion using the same.

[0004]

SUMMARY OF THE INVENTION The present invention comprises a waterproof sheet and a corner member having a right-angled triangular cross section which is crossed and adhered to the waterproof sheet, or whose top is notched. The present invention relates to a waterproof sheet for a rising part. With such a structure, the work can be advanced even if the operator does not make a crease at the corner between the flat surface portion and the rising portion, so that the work efficiency is greatly improved. Since the rising portion does not necessarily rise completely in an L shape with respect to the horizontal surface, and there are often extra protrusions, etc. It is preferable that no problem occurs in construction even if there is a large protrusion.

FIG. 1 is an example for explaining the area division of the back surface of the finishing waterproof sheet for rising portions of the present invention.
[Fig. 4] is an example for explaining the area division of the surface of the finishing waterproof sheet for rising portions of the present invention. In the finishing waterproof sheet 1 for the rising portion, if the corner member 4 is partially cut out at the end portion of the waterproof sheet, when the waterproof sheets are sequentially applied to the rising portion, construction of the seam portion It progresses extremely smoothly. A self-adhesive layer is provided on the entire surface in a partial region C on the surface of the waterproof sheet along the end surface of the corner member 4 opposite to the cutout portion, and the release sheet is coated thereon.

There are three types of means for adhering the finishing tarpaulin for the rising portion to the building. (1) The self-adhesive layer and the release sheet are wholly or partially provided on the side of the finishing waterproof sheet for rising portions. (2) One of the surface fasteners is wholly or partly provided on the side of the rising portion finishing waterproof sheet, while one of the surface fasteners is fixed to a corresponding portion of the building. (3) A double-sided adhesive tape or a double-sided adhesive sheet (the surface of which is covered with a release tape or sheet) is applied in advance to the finishing waterproof sheet construction portion for the rising portion of the building. The area C on the front surface of the waterproof sheet and the areas A and D on the back surface are preferably completely waterproofed to prevent water leakage.
As long as the waterproof seal on the top is completely done, it is not always necessary to bond the entire surface.

An example of the laminated structure of the waterproof sheet is shown from the outside. (1) Synthetic resin film / modified asphalt layer / base material / modified asphalt layer / adhesive layer (2) Synthetic resin film / modified asphalt layer / base Material / Adhesive layer (3) Synthetic resin film / modified asphalt layer / base material / modified asphalt layer / adhesion-preventing synthetic resin film layer. The outer synthetic resin film is preferably a fluororesin film, an acrylic silicone resin film, an acrylic resin film, or the like. For the inner anti-adhesion synthetic resin film layer, a synthetic resin film of polyethylene, polypropylene or the like is used. The modified asphalt layer is a modified asphalt obtained by modifying the asphalt with a modifier such as SBS, atactic polypropylene or SBR in terms of durability.

When the outermost layer of the waterproof sheet is a fluororesin layer, the thickness of the asphalt layer in the asphalt-based waterproof layer can be reduced, which reduces the thickness of the laminate and reduces the overall weight. can do. The fluororesin means a so-called fluororesin, and as a typical one, a vinyl fluoride resin PVF (-CH) is used.
_2- CHF-), vinylidene fluoride resin PVDF
(-CH ₂ -CF ₂ -), ethylene - tetrafluoroethylene resin, chlorotrifluoroethylene resin PCTFE (-C
F ₂ -CFCl-), ethylene - chlorotrifluoroethylene resin ECTFE, perfluoroalkoxy resin P
FA (copolymer of CF ₂ CF ₂ and ROCFCF ₂ , R is perfluoroalkyl), perfluoroethylene propylene resin (copolymer of CF ₂ CF ₂ and CF ₃ CFCF ₂ ), tetrafluoroethylene resin, etc. Although PVF, PVDF, and CTFE are preferable, P is particularly preferable.
VF is preferred. Further, the adhesive surface of the fluororesin film is preferably one that has been subjected to an adhesive property modification treatment.

In order to complete the adhesion between the asphalt layer and the fluororesin layer, a plastic layer having an affinity for both the asphalt and the fluororesin can be interposed. The resin forming the plastic layer preferably contains an acrylic resin as a main component. Examples of the acrylic resin include homopolymers of methyl methacrylate and copolymers containing methyl methacrylate as a main component (for example, 90 wt% or more). As the copolymerization component, alkyl methacrylate (alkyl is C number 1 to 4), alkyl acrylate (alkyl is the same alkyl as before), methacrylic acid, acrylic acid,
Methacrylonitrile, acrylonitrile, styrene, α
-Methylstyrene etc. In addition to acrylic resin, various urethane-based synthetic resins are also preferable materials. The asphalt layer in contact with the plastic layer may be asphalt itself, but modified asphalt modified with a modifier such as SBS, atactic polypropylene or SBR is preferable. In particular, it is preferable to use a modified asphalt in which an acrylic resin is further mixed in order to enhance the affinity with the resin forming the plastic layer, for example, the acrylic resin.

Although fluororesin has excellent weather resistance,
Since ultraviolet rays pass through, the asphalt layer deteriorates, and peeling easily occurs from the interface with the asphalt. Therefore, it is preferable to add an ultraviolet absorber or a dark colorant to the layer outside the asphalt layer. The use of a dark colorant is preferable because the ultraviolet absorber alone is slightly insufficient. As the dark colorant, there is no particular limitation, but carbon black is most preferable because it has the most ultraviolet ray preventing effect. UV protection agents and dark colorants are used in layers outside the asphalt layer, but since the appearance of the waterproof sheet is preferably light, the dark colorant should be added to the plastic layer rather than the fluororesin layer. Is preferred. Instead of adding a dark colorant to the plastic layer to block ultraviolet rays, a black ink layer can be provided between the plastic layer and the fluororesin layer or between the plastic layer and the asphalt layer. In the former case, it is particularly required that the black ink layer and the plastic layer have similar properties. The plastic layer is provided to bond the fluororesin layer and the asphalt layer, but in order to make the bond more reliable, it is preferable to interpose a fiber layer between the plastic layer and the asphalt layer. . In this case, the fiber layer is impregnated with both the plastic component and the asphalt component, and the adhesive strength is further improved.

The corner member can be formed of synthetic resin, synthetic rubber, foams thereof, metal, wood, concrete or the like, but it is most preferable to use the foam because it is lightweight and easy to handle.

The self-adhesive layer is not particularly limited as long as it is a layer capable of adhering to another substance by itself, but is preferably an asphalt-based material, particularly preferably rubber-modified asphalt. .

The release sheet is most commonly release paper, but is not limited to paper and can be a synthetic resin sheet or a metal sheet having an inert layer on the adhesive surface.

The adhesive material used for the self-adhesive layer is not particularly limited, and among the general-purpose adhesive materials prepared by using synthetic resin, synthetic rubber, natural rubber, recycled rubber or the like as a main raw material, the insulating layer and the concrete can be used. It can be used as long as it has good adhesion to the base material and is rich in alkaline water resistance. Since the present invention relates to an asphalt waterproofing method, an adhesive material obtained by adding the above-mentioned synthetic polymer substance to asphalt is preferable. Specific examples of the adhesive material can have the following compositions. SBS (styrene / butadiene / styrene / block copolymer) 20 parts by weight Petroleum resin (tackifier) 10 parts by weight Asphalt 40 parts by weight Process oil 30 parts by weight The coating thickness of the adhesive material is the material selected for the insulating layer. In consideration of the above, it is set in consideration of widening the voids formed between the non-adhesive coated portion and the base. 0.3-1.
It should be 0 mm.

When a surface fastener is used, the fastener surface attached to the waterproof sheet side of the present invention is preferably a surface having a loop-shaped engaging element, but may be a surface having a hook-shaped engaging element. In adhering the finishing tarpaulin for the rising portion of the present invention to the rising portion, a surface fastener having a large number of hook-shaped or loop-shaped engaging elements is attached to the rising portion surface side in whole or in part, while on the other hand, the rising portion. A surface fastener having a large number of loop-shaped or hook-shaped engaging elements is attached to the entire surface or a part of the back surface of the waterproof sheet, and the finish portion for the rising portion is engaged so that the two surface fasteners engage with each other. Apply the tarpaulin to the rising edge.
In this waterproofing method, when partially bonding the surface fastener, the ratio of the area of the surface fastener on the back side of the waterproof sheet to the area where the corresponding surface fastener does not exist is 1 or less, It is preferably 1/3 or less, particularly preferably 1/4 to 1/5.

As the surface fastener having a large number of hook-shaped engaging elements on the base surface, polyester, polyamide,
Molded surface fastener obtained by molding a synthetic resin selected from polyolefin elastomers, polyvinyl chloride, polyurethane, and other flexible thermoplastic resins, or polyester, polyamide, polyolefin, polyvinyl chloride, acrylic A knitted surface fastener obtained by weaving and weaving fibers mainly composed of synthetic fibers and regenerated fibers selected from resins, polyurethane, regenerated cellulose and the like. The hook-shaped engaging element may have any shape such as mushroom-shaped, edging-shaped, umbrella-shaped, hook-shaped, etc., and can be easily engaged with the loop-shaped engaging element. The height of these hook-shaped engaging elements is usually 0.5 to
6 mm, preferably 1.2 to 2.5 mm is suitable.
1 cm of hook-and-loop fastener (a) with hook-shaped engaging element
The number of engaging elements per ² is 10 to 50, preferably 2
The number of engaging elements per 1 cm ^{2 of the} surface fastener (b) having the loop-like engaging element is 500 to
The number is 10,000, preferably 1500 to 7,000. A surface fastener (b) having a loop-shaped engaging element that engages with a surface fastener (a) having a hook-shaped engaging element attached to a concrete base such as a rising portion is engaged with the hook-shaped engaging element. Any surface can be used as long as it can be used. A surface obtained by weaving and weaving fibers mainly composed of synthetic fibers and regenerated fibers selected from polyester, polyamide, acrylic resin, polyurethane, regenerated cellulose, etc. Fasteners or non-woven surface fasteners. The strength and density of the loop-shaped engaging element are adjusted so that the engaging strength with the hook-shaped engaging element is sufficiently large. The length of the loop-shaped engaging element is preferably equal to or longer than the length of the hook-shaped engaging element. Usually 1-2 times the length of the hook-like engaging element is suitable. The thickness is 1 to 10 mm, usually 2 to 8 mm, and the width is 30 to 90.
A 0 mm non-woven fabric or a woven fabric is used. In addition, examples of the base material of the double-sided adhesive tape for attaching the surface fastener (a) or (b) to the base or the asphalt-based waterproof sheet include sheets and films such as cloth, non-woven fabric and synthetic resin. it can. Adhesion of the surface fastener to the base or the asphalt-based waterproof sheet can be continuous stripes, intermittent stripes, or grids, but the adhesive strength of the asphalt-based waterproof sheet bonded to the base in the latch direction is 2kg / Adjust the type of surface fastener and the area of attachment of the surface fastener so that it is at least cm ² .

Further, the double-sided adhesive tape or sheet is previously adhered to the side of the building where the finishing waterproof sheet for rising parts is to be applied, and the finishing waterproof sheet for rising parts having no adhesive layer is formed on the double-sided adhesive tape. Alternatively, it can be adhered by a sheet. The base material of the double-sided pressure-sensitive adhesive tape may be a sheet, a film or the like made of cloth, non-woven fabric, synthetic resin or the like, but especially one having a cushioning property sufficient to absorb the irregularities of the body should be used. Is preferable, and examples thereof include a foam sheet and a thick non-woven fabric.

The method of partially applying the self-adhesive layer, the surface fastener, the double-sided adhesive tape or the sheet is arbitrary such as continuous stripes, intermittent stripes or lattices.

[0019]

【Example】

Example 1 (1) Asphalt layer and black ink layer (PV
A layer for protecting the F layer from ultraviolet rays), an acrylic resin layer, a plastic layer (anchor coat layer), and a polyvinylidene fluoride layer (PVF layer) are provided, and an asphalt layer, a self-adhesion layer (or an antiblocking layer) are provided on the lower surface of the substrate. And a discontinuous self-adhesion layer) and a release layer. By such a method, the areas A, B and D in FIG. 1 and the area C in FIG. As the corner member, a rigid polyurethane closed cell molded into the shape shown in FIG. 1 was used, and the corner member was bonded to a predetermined position before forming the release layer. An adhesive layer may or may not be formed on the exposed surface of the corner member. The black ink layer is NB-300 RS-2 black manufactured by Dainichiseika Kogyo Co., Ltd.
(Urethane black paint containing 10% by weight of carbon black)
Was applied at 5 g / m ² (dry) and dried. The acrylic resin layer is made of Toa Gosei Co., Ltd. Alon S1005 or Aron S whose main component is ethyl acrylate.
1006, and 8 g / m ² (dr
y) It was formed by applying and drying at 100 ° C. for 2 minutes. Anchor coat layer is made by Toyo Morton Co., Ltd. A
A polyester urethane resin consisting of 100 parts by weight of D-76H5 (hereinafter simply referred to as "part"), 6.5 parts of CAT10 and 10 parts of AD-9H1 was applied by gravure coating at 5 g / m ² (dry). It was formed by drying at 100 ° C. for 2 minutes. As the PVF layer, a Tedlar film (trade name, manufactured by DuPont) having a thickness of 38 μm, which has been subjected to adhesion modification treatment on both sides, was used. (2) The finishing waterproof sheet for rising parts manufactured in this way is a structure while peeling off the release sheet in the A and B regions while pressing the corners of this example against the corners of the rising part on the roof of the building. Adhere the self-adhesive layer to. The work proceeded smoothly because the hot asphalt was not used and there was no corner member, so there was no need to bend the laminated waterproof sheet at the corners. (3) The top of the rising portion 5 is fixed as shown in FIG. The upper part of the finishing tarpaulin for the rising part was covered with an aluminum cover. Due to its elasticity, the aluminum headboard can be locked and removed freely.

Example 2 (1) The waterproof sheet of the main body and the areas A and D in FIG.
The region C in FIG. 2 was manufactured in the same manner as in Example 1. (2) A hook-and-loop fastener (b) having a loop-shaped engaging element is adhered in a stripe shape to a region B (the asphalt layer on the lower surface of the base material) of FIG. A finishing waterproof sheet for parts was obtained. (3) On the vertical surface of the rising portion 5 on the roof of the building, the surface fastener (a) having hook-shaped engaging elements corresponds to the surface fastener (b) having the loop-shaped engaging element of the finishing waterproof sheet for rising portions. It was adhered in a stripe shape at the position to be. (4) Adhesion between the rising portion 5 and the finishing waterproof sheet 1 for rising portion is a surface fastener, and the other portions are adhered using the adhesive force of the self-adhesive layer, and then the same means as in Example 1 Then, the treatment of the top of the rising part was performed.

Example 3 (1) A double-sided adhesive tape was used for the surface fastener (a) in Example 2. (2) Therefore, the work of (2) of Example 2 is not necessary, and the finishing waterproof sheet for the rising portion is adhered by the double-sided adhesive tape that is fixed to the building in advance. A top treatment was performed.

[0022]

[Effect] The finishing waterproof sheet for the rising portion of the present invention does not require a builder to make a fold line on the laminated waterproof sheet when constructing the corner portion by using the corner member, and the corner portion can be positioned by the presence of the corner member. Because it is easy, the work is extremely easy. When using a synthetic resin film with high weather resistance as the surface material of the waterproof sheet, there was no risk of water leakage due to it even if the thickness of the waterproof sheet was thin (the number of laminated sheets was small), and it became thinner. This improves transport efficiency and workability. By making the main adhesive surface of the rising portion a partial adhesive type, it is possible to save the adhesive material used, and at the same time, reduce the amount of release sheet generated, which helps prevent dust pollution. When using the surface fastener, the generation of the release sheet could be further suppressed.

[Brief description of drawings]

FIG. 1 is a perspective view of a laminated waterproof sheet for rising portions according to the present invention viewed from the back side.

FIG. 2 is a plan view of the laminated waterproof sheet for rising portions according to the present invention viewed from the front side.

FIG. 3 is a schematic cross-sectional view of a rising portion on which the laminated waterproof sheet for a rising portion of the present invention is applied.

[Explanation of symbols]

1 Laminated waterproof sheet 2 Laminated waterproof sheet back surface 3 Laminated waterproof sheet surface 4 Corner member A The back surface of the laminated waterproof sheet, the part along the cutout portion of the corner member B The back surface of the laminated waterproof sheet, and the corner member is present The part that is adhered to the rising part of the building along the part C where the surface of the laminated waterproof sheet overlaps with the adjacent laminated waterproof sheet D The surface of the laminated waterproof sheet where the corner member exists Along which is glued to the flat part of the building

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kuchiki Inclusion Tajima Roofing Co., Ltd. 1-3-1, Kodai, Adachi-ku, Tokyo

Claims (8)

[Claims] 1. A finish waterproof for a rising portion, comprising a waterproof sheet and a corner member having a right-angled triangular cross section which is crossed and adhered to the waterproof sheet, or a notched top portion thereof. Sheet. 2. The finishing waterproof sheet for a rising portion according to claim 1, wherein the corner member is partially notched at an end portion of the waterproof sheet. 3. The finishing waterproof sheet for a rising portion according to claim 2, wherein a part of the surface of the waterproof sheet has a self-adhesive layer and a release sheet along the end surface of the corner member opposite to the cutout portion. 4. The finish for a rising portion according to claim 3, wherein a self-adhesive layer and a release sheet are provided on at least a portion of the back surface of the waterproof sheet along the cutout portion of the corner member and a portion corresponding to the flat portion. Tarpaulin. 5. A portion of the back surface of the waterproof sheet other than the portion along the cutout portion of the corner member and the portion corresponding to the flat portion is wholly or partially provided with a self-adhesive layer and a release paper. The finishing waterproof sheet for the rising part according to 4. 6. The rising portion according to claim 4, wherein a portion of the back surface of the waterproof sheet other than the portion along the cutout portion of the corner member and the portion corresponding to the flat portion is a surface fastener layer in whole or in part. Finishing tarpaulin. 7. A hook-and-loop fastener according to claim 6, after fixing a hook-and-loop fastener corresponding to the hook-and-loop fastener of the finish waterproof sheet for rising portions according to a corresponding location of a building, and stacking the finish waterproof sheet for rising portions according to claim 6. Finishing waterproof construction method of rising part characterized by being fixed by 8. A double-sided pressure-sensitive adhesive tape or a double-sided pressure-sensitive adhesive sheet is used to form a pressure-sensitive adhesive layer on the entire surface or a part of a corresponding portion of a building on which the finishing waterproof sheet for rising portions according to claim 1 or 2 is to be constructed, and A finishing waterproofing method for a rising portion, comprising bonding the finishing waterproof sheet for a rising portion according to claim 1 or 2.