JP2018080536A - Sheet waterproof structure and construction method of sheet waterproof structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet waterproof structure capable of securing excellent waterproofness over a long period in a waterproof structure using a waterproof sheet on a frame having a groove for drainage, and a construction method of a seat waterproof structure to which such a sheet waterproof structure is applied.SOLUTION: In a sheet waterproof structure 1 of the present invention, at least a part of a floor portion 11 in a frame 10 is covered with a waterproof sheet 30 to provide waterproofing to the frame 10, the sheet waterproof structure having a resin layer (waterproof coating film 20 or adhesive layer 50) covering the floor portion 11, a waterproof sheet 30 covering the resin layer, and a resin sheet 40 interposed between the resin layer and the waterproof sheet 30. The resin layer is made of thermosetting resin or thermoplastic resin, the surface of the waterproof sheet 30 on the side of the resin sheet 40 is made of vinyl chloride resin, and the surface of the resin sheet 40 on the side of the waterproof sheet 30 is made of resin material which may be solvent welded, sealing welded, or thermally fused to the surface of the waterproof sheet 30 on the side of the resin sheet 40.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a sheet waterproof structure for waterproofing a casing, and a method for constructing a sheet waterproof structure for constructing such a sheet waterproof structure.

  In recent years, with the demand for higher durability of buildings such as condominiums, apartments, and high-rise buildings, for example, a sheet in which a waterproof sheet (floor material) is laid and constructed in the corridor of many buildings. A waterproof structure is employed (see, for example, Patent Document 1).

  When this waterproof sheet structure 100 is applied to a corridor having a drain groove, for example, as shown in FIG. 5, the groove 14 included in the housing 10 is covered with a waterproof coating 20, and the floor 11 is covered with a waterproof sheet. 30 is covered. And in the boundary part of a waterproof coating film and a waterproof sheet, the waterproof coating film 20 is made into the lower side, the waterproof sheet 30 is made into the upper side, and the adhesive layer 50 is interposed between these, In this boundary part Waterproofness is ensured.

  However, in the waterproof sheet structure 100 having such a configuration, the waterproof coating 20 and the waterproof sheet 30 are joined by the adhesive layer 50 made of an adhesive. Depending on the combination of the two types, sufficient adhesion cannot be obtained between the waterproof sheet 30 and the pressure-sensitive adhesive layer 50. As a result, the liquid between the waterproof sheet 30 and the pressure-sensitive adhesive layer 50 can be obtained over a long period of use. There has been a problem that the waterproofness of the floor portion 11 due to the laying of the waterproof sheet 30 is lowered due to the decrease in the tightness.

  Such a problem also occurs in a butt portion in which the floor portion 11 is covered with the plurality of waterproof sheets 30 via the adhesive layer 50 and the adjacent waterproof sheets 30 are butted together.

JP 2004-44158 A

  An object of the present invention is to provide a waterproof structure for waterproofing a casing using a waterproof sheet, a sheet waterproof structure capable of ensuring excellent waterproof properties over a long period of time, and a sheet waterproof structure on which such a sheet waterproof structure is constructed. It is to provide a construction method of the structure.

Such an object is achieved by the present invention described in the following (1) to (10).
(1) A sheet waterproof structure that covers at least a part of a floor portion of the casing with a waterproof sheet, and waterproofs the casing,
A resin layer covering at least a part of the floor, the waterproof sheet covering the resin layer, and a resin sheet interposed between the resin layer and the waterproof sheet;
The resin layer is composed mainly of a thermosetting resin or a thermoplastic resin,
The waterproof sheet, at least the surface of the resin sheet side is composed mainly of a vinyl chloride resin,
The resin sheet is characterized in that at least the surface of the waterproof sheet is made of a resin material that can be solvent-welded, sealed, or heat-sealed to the surface of the waterproof sheet on the resin sheet side. Seat waterproof structure.

(2) The casing is for drainage provided along the edge of the floor, the rising part provided standing on the edge of the floor, and the edge of the floor on the rising part side. Having a groove,
The resin layer is mainly composed of a waterproof coating material provided to cover the groove, the groove-side edge of the rising part, and the groove-side edge of the floor part. The sheet waterproof structure according to the above (1), which is a waterproof coating film.

  (3) The sheet waterproof structure according to (2), wherein the coating waterproof material is a urethane-based waterproofing material.

  (4) The resin layer is a pressure-sensitive adhesive layer or an adhesive layer mainly composed of a pressure-sensitive adhesive or an adhesive provided so as to cover the floor portion excluding an edge on the groove portion side of the floor portion. The sheet waterproof structure according to (2) or (3) above.

  (5) The sheet waterproof structure according to any one of (1) to (4), wherein the resin material capable of solvent welding, sealing welding, or heat sealing is a vinyl chloride resin.

  (6) The waterproof sheet structure according to any one of (1) to (5), wherein the resin sheet has a surface with an uneven surface.

  (7) The waterproof sheet structure according to any one of (1) to (6), wherein the resin sheet includes a primer layer on the resin layer side for improving the adhesive strength with the resin layer.

(8) At least one of the resin sheet and the resin layer contains a plasticizer,
The sheet waterproof structure according to any one of the above (1) to (7), wherein the resin sheet includes a transition preventing layer for preventing the transition of the plasticizer on the resin layer side.

  (9) The sheet waterproof structure according to any one of (1) to (8), wherein the resin sheet is a long sheet.

(10) A construction method of a sheet waterproof structure in which at least a part of a floor portion of the casing is covered with a waterproof sheet, and the casing is waterproofed,
A film forming step of forming a film composed mainly of a thermosetting resin or a thermoplastic resin in an uncured or unsolidified state on at least a part of the floor;
A state in which one surface is made of a resin material that can be solvent-welded, sealed or heat-sealed to the other surface of the waterproof sheet, and one surface of the resin sheet is exposed Then, an arrangement step of arranging the resin sheet so as to be embedded in the coating,
A resin layer forming step of forming a resin layer by curing or solidifying the coating;
Prepare a waterproof sheet having the other surface mainly composed of vinyl chloride resin, and the other surface of the waterproof sheet with respect to one surface of the resin sheet by solvent welding, sealing welding, or heat sealing A method for constructing a waterproof sheet structure, comprising: a joining step for joining together.

  According to the waterproof sheet structure of the present invention, it has a resin layer covering at least a part of the floor, a waterproof sheet covering the resin layer, and a resin sheet interposed between the resin layer and the waterproof sheet. In addition, since the resin layer and the waterproof sheet can be firmly bonded via the resin sheet, the waterproof structure of the sheet can ensure excellent waterproof properties over a long period of time.

It is the perspective view which showed typically the sheet | seat waterproof structure of this invention constructed in the housing provided with the groove part for drainage. It is an AA line longitudinal cross-sectional view of the sheet | seat waterproof structure shown in FIG. It is a top view in the B section of the sheet waterproof structure shown in FIG. It is a longitudinal cross-sectional view which shows the other structure of the resin sheet with which the sheet | seat waterproof structure shown in FIG. 2 is provided. It is a longitudinal cross-sectional view which shows the conventional sheet | seat waterproof structure constructed in the housing provided with the groove part for drainage.

  Hereinafter, the waterproof sheet structure and the waterproof sheet construction method of the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings.

  The sheet waterproof structure 1 according to the present invention is a sheet waterproof structure 1 that covers at least a part of a floor 11 included in a housing 10 having a draining groove 14 with a waterproof sheet 30 and waterproofs the housing 10. A resin layer covering at least a part of the resin sheet, a waterproof sheet 30 covering the resin layer, and a resin sheet 40 interposed between the resin layer and the waterproof sheet 30. The waterproof sheet 30 is composed of a plastic resin as a main material, and at least the surface of the resin sheet 40 side is composed of a vinyl chloride resin as the main material. The resin sheet 40 is waterproof at least on the surface of the waterproof sheet 30 side. The sheet 30 is made of a resin material that can be solvent-welded, sealed or heat-sealed to the surface of the sheet 30 on the resin sheet 40 side.

  By using the sheet waterproof structure 1 having such a configuration, the resin layer 40 and the waterproof sheet 30 can be firmly bonded via the resin sheet 40. Therefore, the sheet waterproof structure 1 has excellent waterproof properties over a long period of time. Can be secured.

Hereinafter, the waterproof sheet structure 1 applied to the housing 10 including the groove 14 will be described in detail.
In the sheet waterproof structure 1, a case where the resin layer provided in the sheet waterproof structure 1 is applied to a waterproof coating 20 and an adhesive layer 50 described later will be described.

<Sheet waterproof structure>
FIG. 1 is a perspective view schematically showing a sheet waterproof structure of the present invention applied to a housing having a drainage groove, and FIG. 2 is a longitudinal sectional view taken along line AA of the sheet waterproof structure shown in FIG. 3 is a plan view of part B of the waterproof sheet structure shown in FIG. 1, and FIG. 4 is a longitudinal sectional view showing another structure of the resin sheet provided in the waterproof sheet structure shown in FIG. In the following description, the upper side in FIGS. 1, 2 and 4 is referred to as “upper”, the lower side is referred to as “lower”, the front side in FIG. 3 is referred to as “upper”, and the rear side in FIG.

  As shown in FIG. 1, in this embodiment, the housing 10 (structure) on which the waterproof sheet structure 1 is constructed is a residential facility such as an apartment and an apartment, a business facility such as an office and a bank, a department store, a supermarket, and Corridors with drainage grooves of buildings such as commercial facilities such as outlet malls, entertainment facilities such as theaters, movie theaters, super public baths, amusement facilities such as Olympic stadiums, stadiums and racetracks, and factory facilities Applied to the corridor) and constituting the main body of the corridor, the rising portion 12 provided standing on the outer edge of the building along the longitudinal direction of the floor portion 11, and the building Wall portion 13 provided upright on the inner edge portion of the floor portion and drainage groove portion 14 provided along the edge portion of the floor portion 11 on the rising portion 12 side.

  The waterproof sheet structure 1 is applied to the casing 10, that is, the floor portion 11, the groove portion 14, and the rising portion 12 included in the casing 10, and includes a waterproof coating film 20, a waterproof sheet 30, and a resin sheet. 40 and the pressure-sensitive adhesive layer 50.

  In the present embodiment, the waterproof coating 20 covers the groove 14, the edge of the rising portion 12 on the groove 14 side, and the edge of the floor 11 on the groove 14 side, and the waterproof sheet 30 includes the floor portion. 11 is covered except for the edge on the groove 14 side. And in the boundary part of the waterproof coating 20 and the waterproof sheet 30 in the edge part by the side of the groove part 14 of the floor part 11, the waterproof sheet 30 is piled up by making the waterproof coating 20 into the lower side and the waterproof sheet 30 as the upper side. The waterproof coating film 20 is covered, and the resin sheet 40 is interposed between them, so that the waterproof property at the boundary portion is ensured.

  Further, the waterproof sheet 30 covering the floor portion 11 includes a plurality of waterproof sheets 30 arranged in a line along the longitudinal direction of the floor portion 11, and the adhesive layer 50 between the floor portion 11 and the waterproof sheet 30. Is interposed between the adhesive layer 50 on the floor 11 and the waterproof sheet 30 at the butting portion where the adjacent waterproof sheets 30 are butted together. By interposing the sheet 40, waterproofness at the butt portion is ensured.

  By having the seat waterproof structure 1 having such a configuration, the waterproof property on the bottom surface side of the housing 10, in other words, the waterproof property of the floor portion 11 which is the passage surface of the corridor through which pedestrians pass, and water The waterproofness of the flowing groove portion 14 is ensured.

  That is, the waterproof sheet 30 is exposed to the floor portion 11 by sunlight or rainwater, and the waterproof coating film 20 is exposed to the groove portion 14, thereby preventing the casing 10 from being directly exposed to sunlight or rainwater. Therefore, the waterproof property of the housing 10 is ensured.

  Further, at the boundary portion where the waterproof coating 20 and the waterproof sheet 30 are overlapped, the resin sheet 40 is interposed between the waterproof coating 20 and the waterproof sheet 30, so that the waterproof coating 20 and the waterproof sheet 30 are separated. The liquid tightness between the two is improved. Therefore, even if it is used for a long time, it can suppress or prevent that waterproofness falls between the waterproof coating 20 and the waterproof sheet 30 exactly.

  Furthermore, in the butt portion where the waterproof sheets 30 are butted together, the resin sheet 40 is interposed between the pressure-sensitive adhesive layer 50 and the waterproof sheet 30, so that the adhesion between the pressure-sensitive adhesive layer 50 and the waterproof sheet 30 is increased. Will improve. Therefore, even if it is used for a long time, it can suppress or prevent that waterproofness falls between the adhesive layer 50 and the waterproof sheet 30 exactly.

  Therefore, the casing 10 to which the sheet waterproof structure 1 is applied can ensure excellent waterproof properties over a long period of time.

Hereinafter, each part with which the sheet | seat waterproofing structure 1 is provided is explained in full detail.
The waterproof coating film 20 is formed so as to cover the groove part 14, the edge part of the rising part 12 on the groove part 14 side, and the edge part of the floor part 11 on the groove part 14 side. Thereby, the function which ensures the waterproofness in the groove part 14 mainly is exhibited.

  The waterproof coating film 20 is composed mainly of a waterproof coating film (thermosetting resin) having thermosetting properties, and constitutes a resin layer in the present invention.

  Although it does not specifically limit as a coating-film waterproofing material, The thing excellent in water resistance and the affinity with respect to the groove part 14 is selected, for example, a urethane-type coating-film waterproofing material, an epoxy-type coating-film waterproofing material, and a silicone-type coating-film waterproofing material These can be used, and one or two or more of these can be used in combination, and among them, a urethane coating film waterproofing material is preferable. The urethane-based coating film waterproofing material is preferably used because it is easy to handle and can form a coating film having excellent waterproof properties with a more uniform film thickness.

  As the urethane-based waterproofing material, any of a two-component urethane-based waterproofing material and a one-component (moisture-curing) urethane-based waterproofing material can be used. Among these, as the two-pack type urethane coating film waterproofing material, a mixture obtained by mixing a liquid main ingredient containing an isocyanate component and a liquid curing agent is preferably used.

  The polyisocyanate component (main agent) is not particularly limited, and examples thereof include diphenylmethane-4,4′-diisocyanate (MDI), carbodiimide-modified diphenylmethane diisocyanate (liquid MDI), and 2,4-tolylene diisocyanate (2,4-TDI). ), 2,6-tolylene diisocyanate (2,6-TDI), xylylene diisocyanate (XDI), hexamethylene diisocyanate, and the like.

  Note that additives such as a plasticizer, a curing catalyst, a filler, an antioxidant, a flame retardant, a stabilizer, an ultraviolet absorber, a surfactant, and a coloring pigment may be added to the main agent as necessary. Good. Moreover, as a plasticizer, the thing similar to the plasticizer contained in the waterproof sheet 30 mentioned later can be used.

  Examples of the curing agent include active hydrogen-containing compounds, such as polyols, polyamines, and water, and one or more of these can be used in combination.

  The polyol is not particularly limited, and examples thereof include general polyols such as polyether polyol and polytetramethylene glycol, flame retardant polyols such as phosphorus-containing polyol, and the like, one or more of these. Can be used in combination.

  Furthermore, although it does not specifically limit as a polyamine, For example, an aromatic polyamine, an aliphatic polyamine, etc. are mentioned, Among these, it can use 1 type or in combination of 2 or more types.

  The thickness of the waterproof coating film 20 is not particularly limited, but is preferably about 0.5 mm or more and 5 mm or less, and more preferably about 0.8 mm or more and 3 mm or less. Thereby, the groove part 14, the edge part by the side of the groove part 14 of the standing part 12, and the edge part by the side of the groove part 14 of the floor part 11 are covered reliably by the waterproof coating 20, and the waterproofness with respect to these is provided reliably. be able to.

  The waterproof sheet 30 (floor material) includes a plurality of waterproof sheets 30 arranged in a line along the longitudinal direction of the floor portion 11, and the waterproof coating 20 or the adhesive layer between the floor portion 11 and the waterproof sheet 30. By interposing 50, the floor part 11 is covered, and thereby the waterproof property in the floor part 11 is ensured.

  The waterproof sheet 30 has a sheet shape (plate shape) as a whole, and in the present invention, at least the surface on the lower surface (resin sheet 40) side is mainly composed of a vinyl chloride resin. Thereby, the solvent weldability of the waterproof sheet 30 with respect to the resin sheet 40, sealing weldability, and heat-fusibility can be made excellent.

  Such a waterproof sheet 30 may be a single layer composed of a vinyl chloride resin as a main material, or may be a laminate including a lower layer mainly composed of a vinyl chloride resin.

  The vinyl chloride resin is not particularly limited as long as it is a polymer containing vinyl chloride, that is, an oligomer, a prepolymer and a polymer. For example, a vinyl chloride monomer or vinyl chloride and vinyl acetate, ethylene Or a copolymer with propylene and the like, and a mixture of two or more of these polymers.

  Furthermore, the plastic layer, the various stabilizers, the various antioxidants, the various ultraviolet absorbers, the processing aids, the lubricants, the fillers, and the fiber reinforcement that forms the mesh are formed on the lower layer of the single layer or laminate. A material, a flame retardant, a coloring material, and the like may be included, and a plasticizer is particularly preferably included. Thereby, the waterproof sheet 30 can have more excellent flexibility.

  The plasticizer is not particularly limited. For example, phthalate plasticizers such as DOP (dioctyl phthalate), DBP (dibutyl phthalate), DIBP (diisobutyl phthalate), and DHP (diheptyl phthalate), DOA ( Aliphatic dibasic ester plasticizers such as di-2-ethylhexyl adipate), DIDA (diisodecyl adipate), DOS (di-2-ethylhexyl sebacate), aromatic carboxylic acid esters such as benzoates of ethylene glycol And plasticizers, trimellitic acid ester plasticizers such as TOTM (trioctyl trimellitate), and the like, and one or more of them can be used in combination.

  Examples of the filler include titanium oxide, clay, silica, calcium carbonate, barium sulfate, and the like, and one or more of these can be used in combination.

  Examples of the stabilizer include glycine zinc. In this case, examples of the stabilizer include tricresyl phosphate (TCP), trixyl phosphate (TXP), tributyl phosphate (TBP), and phosphoric acid. Examples thereof include organic phosphates such as tri-2-ethylhexyl and 2-ethylhexyl diphenyl phosphate.

  When the waterproof sheet 30 is configured as a laminated body, the upper layer (base material) laminated on the lower layer includes natural fibers such as cotton and hemp, synthetic fibers such as polyester, polyethylene, and acrylic, and woven glass fibers. Examples include cloth and non-woven fabric. Further, an intermediate layer may be interposed between the lower layer and the upper layer. In this case, the intermediate layer includes at least one of a vinyl chloride resin, an olefin resin, an acrylic resin, and a rubber resin. The thing containing 1 type is mentioned.

  The thickness of the waterproof sheet 30 is not particularly limited, but the total thickness of both the single layer body and the laminated body is preferably about 0.5 mm or more and 5.0 mm or less, and 1.0 mm or more and 2. More preferably, it is about 5 mm or less. Thereby, the waterproofness with respect to the floor part 11 can be provided reliably.

  The waterproof sheet 30 may have regular or irregular irregularities on the surface thereof, and may further have a printed layer for imparting design properties to the surface. That is, the waterproof sheet 30 may be a so-called decorative sheet. Thereby, anti-slip properties and / or design properties can be imparted to the waterproof sheet 30.

  The resin sheet 40 has a waterproof coating film 20 positioned on the lower side and a waterproof sheet 30 positioned on the upper side at the boundary between the waterproof coating film 20 and the waterproof sheet 30 at the edge of the floor portion 11 on the groove 14 side. By interposing between them and being bonded to both of them, the function of ensuring excellent waterproofness at the boundary portion is exhibited.

  In addition, the resin sheet 40 is interposed between the adhesive layer 50 located on the lower side and the waterproof sheet 30 located on the upper side at the abutting portion where the adjacent waterproof sheets 30 are abutted to each other. By joining to each other, the function of ensuring excellent waterproofness at the butt portion is exhibited.

  As shown in FIG. 3, the waterproof coating film 20, not the adhesive layer 50, is provided below the waterproof sheet 30 at the boundary portion side where the adjacent waterproof sheets 30 are butted together. The resin sheet 40 is present between the waterproof coating film 20 and the waterproof sheet 30, but even with such a combination, excellent waterproof properties at the butt portion can be ensured.

  In the present embodiment, the resin sheet 40 is laid on the two adjacent waterproof sheets 30 at the abutting portion where the adjacent waterproof sheets 30 are abutted with each other. ing. That is, one resin sheet 40 is laid across two waterproof sheets 30. Here, in the case of laying one resin sheet 40 corresponding to one waterproof sheet 30, a gap may be generated between adjacent resin sheets 40. Since the generation of the gap can be surely prevented, the waterproofness at the butt portion can be further improved.

  Furthermore, in this embodiment, the resin sheet 40 is interposed between the adhesive layer 50 located on the lower side and the waterproof sheet 30 located on the upper side, even at the edge of the floor portion 11 on the wall 13 side. By joining to both of these, the function of ensuring waterproofness at the edge is exhibited.

  In the present embodiment, the resin sheet 40 is a long sheet having a long shape, and is thus arranged corresponding to the shape of the boundary portion, the butt portion, and the edge portion described above.

  Such a resin sheet 40 is a resin material in which at least the upper surface (surface on the waterproof sheet 30 side) can be solvent-welded, sealed, or heat-sealed to the lower surface of the waterproof sheet 30 (surface on the resin sheet 40 side). Examples of such a resin material include a vinyl chloride resin such as polyvinyl chloride, a polyolefin resin, an ethylene vinyl acetate copolymer, a polycarbonate resin, and the like. Can be used in combination, but is preferably a vinyl chloride resin. That is, it is preferable that the same or the same resin as that constituting the lower surface of the waterproof sheet 30 is used. Thereby, since joining of the resin sheet 40 and the waterproof sheet | seat 30 can be reliably implemented using solvent welding, sealing welding, and heat fusion, the improvement of adhesiveness of these can be aimed at.

  In addition, the resin constituting the resin sheet 40 may include other materials such as the plasticizer, the stabilizer, the filler, and the fiber reinforcing material mentioned in the constituent material of the waterproof sheet 30 described above. That is, the resin sheet 40 may be either a soft vinyl chloride sheet or a hard vinyl chloride sheet when it contains a vinyl chloride resin.

  Further, the resin sheet 40 is embedded in the waterproof coating film 20 or the pressure-sensitive adhesive layer 50 with the upper surface (surface on the waterproof sheet 30 side) exposed. Thereby, the joint strength of the resin sheet 40 and the waterproof coating film 20 or the adhesive layer 50 can be improved.

  The thickness of the resin sheet 40 is not particularly limited, but is preferably 50 μm or more and 2.0 mm or less, and more preferably 0.1 mm or more and 1.0 mm or less. Thereby, even if stress acts on the resin sheet 40 in the waterproof sheet structure 1, it is possible to accurately suppress the occurrence of cracks and breaks in the resin sheet 40. Further, the resin sheet 40 can be embedded in the waterproof coating film 20 or the pressure-sensitive adhesive layer 50 with the upper surface of the resin sheet 40 being reliably exposed.

  Further, the width of the resin sheet 40 is usually the width of the boundary portion where the waterproof coating film 20 and the waterproof sheet 30 overlap when the resin sheet 40 is disposed at the boundary portion between the waterproof coating film 20 and the waterproof sheet 30. For example, it is preferably 30 mm or more, and more preferably 30 mm or more and 100 mm or less. Thereby, even if stress acts on the resin sheet 40 in the waterproof sheet structure, it is possible to accurately suppress the occurrence of cracks and breaks in the resin sheet 40, so that the function as the resin sheet 40 is ensured. It can be demonstrated.

  Moreover, the lower surface (surface at the side of the waterproof coating 20) of the resin sheet 40 may be an uneven surface as shown in FIG. 4 in addition to the flat surface shown in FIG.

  As shown in FIG. 4 (a), the resin sheet 40 having a concavo-convex lower surface protrudes from the lower surface with a convex portion 41 having a rectangular shape at the edge in the width direction (short direction) of the resin sheet 40. As shown in FIG. 4 (b), the spherical convex portions 42 may protrude at substantially equal intervals on the substantially entire lower surface, and FIG. As shown in (c), the concave portions 43 having a rectangular shape may be depressed at substantially equal intervals on almost the entire lower surface. By forming the lower surface of the resin sheet 40 with a concavo-convex surface, an anchor effect (a throwing effect) is obtained due to the waterproof coating 20 entering the concavo-convex surface. As a result, the resin sheet 40 and the waterproof coating Thus, the adhesive strength can be improved.

  Moreover, the convex parts 41 and 42 may be provided with a barb at the tip, and the convex parts 41 and 42 and the concave part 43 are provided inclined with respect to the thickness direction of the resin sheet 40. It may be.

  Further, the resin sheet 40 includes a metal plate bonded to the lower surface thereof, in other words, a resin component layer and a metal plate laminated on the lower surface side of the resin component layer. Also good. That is, the resin sheet 40 may be a so-called vinyl chloride steel plate when the resin component layer includes a vinyl chloride resin. Thereby, since the strength of the resin sheet 40 as a whole can be improved, even if a stress acts on the resin sheet 40 in the waterproof sheet structure 1, cracks and breaks occur in the resin component layer provided in the resin sheet 40. The occurrence can be accurately suppressed.

  Moreover, although this metal plate is comprised, for example with a steel plate like a stainless steel plate and an iron plate, an aluminum plate, a copper plate, etc., it is preferable that it is a steel plate. Thereby, the resin sheet 40 having a configuration including a metal plate can have excellent strength.

  The thickness of the metal plate is not particularly limited, but is preferably about 0.1 mm or more and 3 mm or less, and more preferably about 0.3 mm or more and 2.0 mm or less. Thereby, the resin sheet 40 can surely have excellent strength.

  Further, the resin sheet 40 includes a primer layer bonded to the lower surface thereof, in other words, a resin component layer and a primer layer laminated on the lower surface side of the resin component layer. Also good. Thereby, since the adhesive strength between the resin sheet 40 and the waterproof coating 20 or the pressure-sensitive adhesive layer 50 (particularly the waterproof coating 20) can be improved, the waterproof property of the sheet waterproof structure 1 is more excellent. It can be.

  The primer layer is selected from those having excellent affinity for at least one of the waterproof coating 20 and the pressure-sensitive adhesive layer 50. For example, the waterproof coating 20 is a urethane coating waterproof. When the material is configured as the main material, for example, it is preferable that the material is configured with a urethane resin as the main material. Thereby, the affinity with respect to the waterproof coating 20 of a primer layer can be improved reliably.

  Further, the thickness of the primer layer is not particularly limited, but is preferably about 0.01 mm or more and 1 mm or less, and more preferably about 0.05 mm or more and 0.5 mm or less. Thereby, the function mentioned above can be exhibited reliably to a primer layer.

  Furthermore, the resin sheet 40 is provided with a transition preventing layer that suppresses or prevents the transition of the plasticizer from the resin sheet 40 to the waterproof coating film 20 or the pressure-sensitive adhesive layer 50, which is bonded to the lower surface thereof, in other words, a resin. You may be comprised by the component layer and the transition prevention layer laminated | stacked on the lower surface side of this resin component layer. Since the resin sheet 40 is provided with such a transition prevention layer, the deterioration and deterioration due to the shrinkage of the resin sheet 40 and the like are accurately suppressed or prevented, so that the waterproofness of the sheet waterproof structure 1 can be maintained over a long period of time. Can be maintained.

  In addition, this migration prevention layer is made of, for example, an ultraviolet curable resin such as a polyether acrylate resin, an epoxy acrylate resin, a urethane acrylate resin, a polyester acrylate resin, a thiol-diene reaction resin, or a polyethylene resin. It is preferable that the main material is a polyolefin resin such as a polypropylene resin or a thermoplastic resin such as a polyester resin. Thereby, the transfer of the plasticizer between the resin sheet 40 and the waterproof coating film 20 or the pressure-sensitive adhesive layer 50 can be more accurately suppressed or prevented. In particular, when the waterproof coating 20 contains a plasticizer and the plasticizer content in the resin sheet 40 is lower than that of the waterproof coating 20, the plasticizer is transferred from the waterproof coating 20 to the resin sheet 40. Since it can suppress or prevent more accurately, the shrinkage | contraction of the resin sheet 40 resulting from this is suppressed or prevented more accurately.

  The thickness of the migration preventing layer is not particularly limited, but is preferably about 0.01 mm to 3 mm, and more preferably about 0.05 mm to 1 mm. Thereby, the function mentioned above can be exhibited reliably in the transition prevention layer.

  The pressure-sensitive adhesive layer 50 is provided so as to cover the floor portion 11 exposed in the housing 10 without forming the waterproof coating 20 on the floor portion 11, thereby interposing between the floor portion 11 and the waterproof sheet 30. Then, these are joined together. In the present embodiment, the pressure-sensitive adhesive layer 50 is also present at a position where the resin sheet 40 is not interposed between the waterproof coating 20 and the waterproof sheet 30 in the region covered with the waterproof sheet 30 of the waterproof coating 20. The waterproof coating 20 and the waterproof sheet 30 are joined by this pressure-sensitive adhesive layer 50 (see FIG. 2).

  The pressure-sensitive adhesive layer 50 is mainly composed of, for example, a pressure-sensitive adhesive composed of at least one of an acrylic pressure-sensitive adhesive, a silicone-based pressure-sensitive adhesive, and a rubber-based pressure-sensitive adhesive, and constitutes a resin layer in the present invention. To do.

  Examples of the acrylic pressure-sensitive adhesive include resins composed of (meth) acrylic acid and esters thereof, (meth) acrylic acid and esters thereof, and unsaturated monomers copolymerizable therewith (for example, vinyl acetate). , Styrene, acrylonitrile and the like) and the like. Moreover, what mixed 2 or more types of these resin is mentioned.

  Examples of rubber-based adhesives include natural rubber-based, isoprene rubber-based, styrene-butadiene-based, recycled rubber-based, and polyisobutylene-based rubbers, and rubbers such as styrene-isoprene-styrene and styrene-butadiene-styrene. The thing etc. which mainly have the block copolymer containing are mentioned.

  Furthermore, examples of the silicone-based pressure-sensitive adhesive include dimethylsiloxane-based and diphenylsiloxane-based ones.

  The pressure-sensitive adhesive contained in the pressure-sensitive adhesive layer 50 may be either a curable type (thermosetting resin) or a non-curable type (thermoplastic resin). A crosslinking agent may be added. Examples of the crosslinking agent include epoxy compounds, isocyanate compounds, metal chelate compounds, metal alkoxides, metal salts, amine compounds, hydrazine compounds, aldehyde compounds, and the like.

  The adhesive layer 50 requires various additives such as a polymerization initiator, a plasticizer, a tackifier, a thickener, a filler, an anti-aging agent, an antiseptic, an antifungal agent, a dye, and a pigment. It may be added depending on.

  Furthermore, although the thickness of the adhesive layer 50 is not specifically limited, For example, it is preferable that it is about 0.1 mm or more and 3 mm or less, and it is more preferable that it is about 0.5 mm or more and 3 mm or less. Thereby, the floor part 11 and the waterproof sheet 30 can be uniformly joined to each other.

  In addition, in this embodiment, although the case where joining of the floor part 11 and the waterproof sheet 30 was performed by interposing the adhesive layer 50 between these was not limited to this, an epoxy adhesive agent, The floor portion 11 and the waterproof sheet 30 can be joined by interposing an adhesive layer containing an adhesive such as a urethane adhesive as a main material.

  The sheet waterproof structure 1 having the above-described configuration is constructed by, for example, a sheet waterproof structure construction method described below (a sheet waterproof structure construction method of the present invention).

<Construction method for waterproof sheet structure>
The construction method of the sheet waterproof structure 1 of the present embodiment is that the groove portion 14, the edge portion of the rising portion 12 on the groove portion 14 side, and the edge portion of the floor portion 11 on the groove portion 14 side are coated and waterproofed in an uncured state. A first film forming step of forming a first film composed mainly of a material and a resin sheet 40 are prepared, and the upper surface of the resin sheet 40 is exposed, and the groove portion 14 side of the floor 11 is exposed. A first disposing step of disposing the resin sheet 40 with respect to the first coating located at the edge, and a waterproof coating forming step of forming the waterproof coating 20 by curing the first coating; A second film forming step of forming a second film composed mainly of an adhesive in an uncured or unsolidified state in a region excluding the edge on the groove portion 14 side of the floor portion 11, and the resin sheet 40 With the upper surface (one surface) of A second placement step for placing the sheet 40 so as to be embedded; a pressure-sensitive adhesive layer forming step for forming the pressure-sensitive adhesive layer 50 by curing or solidifying the second coating; and solvent welding, sealing welding, or heat fusion. Thus, a bonding step of bonding the lower surface (the other surface) of the waterproof sheet 30 to the upper surface (the one surface) of the resin sheet 40 is included.

Hereinafter, these steps will be described in detail.
[1] First, the waterproof portion of the groove portion 14, the edge portion of the rising portion 12 on the groove portion 14 side, and the edge portion of the floor portion 11 on the groove portion 14 side are configured with a waterproof coating material as a main material in an uncured state. A first film (liquid film) is formed (first film forming step).
This first film is formed by applying a liquid material containing an uncured waterproofing film to a region where the first film is to be formed, that is, the groove part 14, the edge part of the rising part 12 on the groove part 14 side, and the floor. It can form by supplying to the edge part by the side of the groove part 14 of the part 11. FIG.

  The method for supplying the liquid material is not particularly limited. For example, various coating methods such as a spray coating method and a hand coating method are used. Of these, the hand coating method is preferable. Thereby, the liquid film with a uniform film thickness can be easily formed.

  In the present specification, the uncured state may be a state in which the thermosetting resin is not completely cured, and includes completely uncured and semi-cured states.

  [2] Next, a resin sheet 40 is prepared, and with the upper surface (one surface) of the resin sheet 40 exposed, the first film located at the edge of the floor 11 on the groove 14 side, that is, It arrange | positions so that the resin sheet 40 may be embedded with respect to the 1st coating film located in the area | region which should form the boundary part of the waterproof coating 20 and the waterproof sheet 30 (1st arrangement | positioning process).

  As described above, the resin sheet 40 and the waterproof coating film 20 have excellent strength by curing the first film in the next step [3] with the resin sheet 40 embedded in the first film. The waterproof coating film 20 can be formed in the joined state.

  Further, the resin sheet 40 only needs to have its upper surface exposed, and part of the resin sheet 40 may protrude from the upper surface side in the thickness direction. Unlike this, the entire resin sheet 40 is embedded in the waterproof coating film 20. A flat surface may be formed by the resin sheet 40 and the first coating.

  Moreover, the arrangement of the resin sheet 40 with respect to the first film is prepared, for example, by preparing a resin sheet 40 having a long shape while being wound in a roll shape, and using the resin sheet 40 as an edge on the groove portion 14 side of the floor portion 11. It is preferable to sequentially feed from the distal end side toward the proximal end side while rotating along the portion. Thereby, the resin sheet 40 can be embedded in the first coating film with excellent positional accuracy.

  [3] Next, the waterproof coating 20 is formed by curing the first coating (waterproof coating forming step (resin layer forming step)).

  At this time, since the resin sheet 40 is embedded in the first coating in the step [2], the waterproof coating is obtained in a state where the resin sheet 40 is firmly bonded by the curing of the first coating. 20 is formed.

  [4] Next, a second coating (liquid coating) composed mainly of an adhesive in an uncured or unsolidified state is formed in the region excluding the edge on the groove 14 side of the floor 11 (first coating). 2 film forming step).

  This second coating supplies a liquid material containing an uncured or unsolidified adhesive to a region where the second coating is to be formed, that is, a region excluding the edge of the floor 11 on the groove 14 side. Can be formed.

  Moreover, as a method for supplying the liquid material, the same method as mentioned in the step [2] can be used.

  [5] Next, with the upper surface of the resin sheet 40 exposed, the resin sheet 40 is embedded in the second coating film located in a region where a butt portion where the adjacent waterproof sheets 30 are butted together is to be formed. (2nd arrangement | positioning process).

  As described above, the resin sheet 40 and the pressure-sensitive adhesive layer 50 are excellent by curing or solidifying the second film in the next step [6] with the resin sheet 40 embedded in the second film. The pressure-sensitive adhesive layer 50 can be formed in a state of being bonded with strength.

  Moreover, the resin sheet 40 should just have the upper surface exposed like the said process [2], and one part may protrude from the upper surface side in the thickness direction, and the whole is the waterproof coating 20 It may be embedded in.

  In addition, the resin sheet 40 is arranged with respect to the second coating, for example, by preparing a resin sheet 40 wound in a roll shape, and forming a butt portion in which the adjacent waterproof sheets 30 are abutted with each other. It is preferable to sequentially feed from the distal end side toward the proximal end side while rotating along the power region. Thereby, the resin sheet 40 can be embedded in the second coating film with excellent positional accuracy.

  [6] Next, the pressure-sensitive adhesive layer 50 is formed by curing or solidifying the second coating (pressure-sensitive adhesive layer forming step (resin layer forming step)).

  At this time, in the step [5], since the resin sheet 40 is embedded in the second coating, the second coating is cured or solidified so that the resin sheet 40 is firmly bonded in a state of being firmly bonded. The agent layer 50 is formed.

  Furthermore, in this step [6], the second coating is cured or solidified in a state where the waterproof sheet 30 is in contact with the second coating exposed outside the region where the butt portion of the floor portion 11 is to be formed. . The waterproof sheet 30 can be bonded to the floor portion 11 via the adhesive layer 50 in a region other than the region where the butted portion of the floor portion 11 is to be formed.

  [7] Next, the area where the boundary between the waterproof coating 20 and the waterproof sheet 30 should be formed and the adjacent waterproof sheets 30 protrude from each other by solvent welding, sealing welding, or heat sealing. A bonding step of bonding to the upper surface of the resin sheet 40 disposed in a region where the combined butted portions are to be formed.

  Thus, the waterproof sheet 30 and the resin sheet 40 are joined by solvent welding, sealing welding, or heat fusion, and as a result, the waterproof sheet 30 and the resin sheet 40 can be joined with excellent joining strength.

  Before performing this step [7], the release paper is bonded to the upper surface of the resin sheet 40, and the release paper is peeled off before the upper surface of the resin sheet 40 is melted. It is preferable. Thereby, since it can suppress or prevent that the upper surface of the resin sheet 40 is contaminated accurately, the joining of the resin sheet 40 and the waterproof sheet 30 can be reliably carried out with excellent bonding strength.

  The resin sheet 40 and the waterproof sheet 30 may be joined by, for example, I) a solvent welding method in which the resin sheet 40 is melted and joined with a solvent, or II) heat fusion in which the resin sheet 40 is melted and joined by heating with hot air. These methods will be described below.

I) Solvent welding method As this welding method (solvent welding method), prior to coating (laying) the waterproof sheet 30 on the resin sheet 40, a brush welding method in which the resin sheet 40 included in the resin sheet 40 is in a molten state; An example is an injection welding method in which the resin sheet 40 is melted after the waterproof sheet 30 is laid.

(I-1) Brush welding method In this brush welding method, first, before laying the waterproof sheet 30 on the resin sheet 40, a solvent (soluble solvent) is used on the upper surface of the resin sheet 40 by using a brush brush or the like. Is applied (supplied). As a result, the upper surface of the resin sheet 40 comes into contact with the solvent, and as a result, is in a molten state.

Next, the waterproof sheet 30 is laid on the surface of the resin sheet 40.
Next, the lower surface of the waterproof sheet 30 is fixed to the upper surface of the resin sheet 40 by pressing the resin sheet 40 from above the waterproof sheet 30 with an operator's hand or the like. Thereby, the waterproof sheet 30 is joined to the resin sheet 40.

  The solvent (soluble solvent) is not particularly limited as long as it can bring the resin sheet 40 into a molten state, but when the resin sheet 40 is composed of a resin containing a vinyl chloride resin, for example, tetrahydrofuran ( THF) nitrobenzene, carbon tetrachloride, pyridine, ethyl acetate, cyclohexanone, ketones such as methyl ethyl ketone (MEK), alcohols such as toluene, methyl alcohol, isopropyl alcohol, etc., and one or more of these Among them, THF is preferable. THF is a solvent that can surely make the resin sheet 40 in a molten state and has excellent volatility, so that the lower surface of the waterproof sheet 30 and the upper surface of the resin sheet 40 can be firmly fixed.

(I-2) Injection welding method In this injection welding method, first, the waterproof sheet 30 is laid on the upper surface of the resin sheet 40.

  Next, with respect to the laid waterproof sheet 30, the injection needle included in the syringe is provided with a waterproof sheet using an injector between the upper surface of the resin sheet 40, that is, between the upper surface of the resin sheet 40 and the lower surface of the waterproof sheet 30. The solvent is selectively supplied in a state of passing through 30. As a result, the upper surface of the resin sheet 40 comes into contact with the solvent, and as a result, is in a molten state.

  Next, after the injection needle is removed from the waterproof sheet 30, the lower surface of the waterproof sheet 30 is fixed to the upper surface of the resin sheet 40 by pressing the resin sheet 40 from above the waterproof sheet 30 with the hand of an operator or the like. Thereby, the waterproof sheet 30 is joined to the resin sheet 40.

As the solvent, the same solvent as described in the brush welding method is used.
The resin sheet 40 and the waterproof sheet 30 can be joined by a sealing welding method using a solution obtained by dissolving a vinyl chloride resin in a solvent instead of the solvent.

II) Thermal fusion method In this thermal fusion method, first, hot air is supplied to the upper surface of the resin sheet 40 using a hot air gun or the like prior to laying the waterproof sheet 30 on the resin sheet 40. Thereby, the upper surface of the resin sheet 40 is heated, and as a result, the resin sheet 40 is brought into a heat-melted state.

Next, the waterproof sheet 30 is laid on the surface of the resin sheet 40.
Next, the lower surface of the waterproof sheet 30 is fixed to the upper surface of the resin sheet 40 by pressing the resin sheet 40 from above the waterproof sheet 30 with an operator's hand or the like. Thereby, the waterproof sheet 30 is joined to the resin sheet 40.
By passing through the above processes, the waterproof sheet structure 1 is applied to the housing 10.

  Moreover, since the waterproof coating 20 and the pressure-sensitive adhesive layer 50 and the waterproof sheet 30 can be firmly bonded via the resin sheet 40 by adopting a configuration through the above-described steps, the applied sheet The waterproof structure 1 can ensure excellent waterproof properties over a long period of time.

  As mentioned above, although the construction method of the sheet | seat waterproof structure and sheet | seat waterproof structure of this invention was demonstrated, this invention is not limited to these.

  For example, in the waterproof sheet structure of the present invention, each component can be replaced with any component that can exhibit the same function, or any component can be added.

  Moreover, although this embodiment demonstrated the case where the sheet | seat waterproof structure of this invention was constructed | assembled to the housing (corridor) provided with the groove part for drainage, it is also with respect to housings, such as a corridor (inner corridor) without a groove part. In this case, the waterproof sheet structure of the present invention is applied at the butting portion where the adjacent waterproof sheets 30 are butted together.

  Furthermore, the sheet waterproof structure of the present invention can be applied to the roof (rooftop) of the above-described building, in addition to being applied to the corridor of the building described in the present embodiment.

  In addition, one or more processes for any purpose may be added to the method for constructing a waterproof sheet structure according to the present invention.

DESCRIPTION OF SYMBOLS 1 Sheet waterproof structure 10 Housing 11 Floor part 12 Standing part 13 Wall part 14 Groove part 20 Waterproof coating 30 Waterproof sheet 40 Resin sheet 41 Convex part 42 Convex part 43 Concave part 50 Adhesive layer 100 Sheet waterproof structure

Claims (10)

Covering at least a part of the floor part of the housing with a waterproof sheet, a waterproof sheet structure for waterproofing the housing,
A resin layer covering at least a part of the floor, the waterproof sheet covering the resin layer, and a resin sheet interposed between the resin layer and the waterproof sheet;
The resin layer is composed mainly of a thermosetting resin or a thermoplastic resin,
The waterproof sheet, at least the surface of the resin sheet side is composed mainly of a vinyl chloride resin,
The resin sheet is characterized in that at least the surface of the waterproof sheet is made of a resin material that can be solvent-welded, sealed, or heat-sealed to the surface of the waterproof sheet on the resin sheet side. Seat waterproof structure. The frame includes the floor, a rising portion provided standing on an edge of the floor, and a draining groove provided along an edge of the floor on the rising portion side. Have
The resin layer is mainly composed of a waterproof coating material provided to cover the groove, the groove-side edge of the rising part, and the groove-side edge of the floor part. The waterproof sheet structure according to claim 1, which is a waterproof coating film.   The sheet waterproof structure according to claim 2, wherein the coating waterproof material is a urethane-based coating waterproof material.   The resin layer is a pressure-sensitive adhesive layer or an adhesive layer mainly composed of a pressure-sensitive adhesive or an adhesive provided so as to cover the floor portion excluding an edge portion on the groove portion side of the floor portion. The sheet waterproof structure according to 2 or 3.   The waterproof sheet structure according to any one of claims 1 to 4, wherein the resin material that can be solvent-welded, sealed, or heat-sealed is a vinyl chloride resin.   The sheet waterproof structure according to any one of claims 1 to 5, wherein a surface of the resin sheet is an uneven surface.   The sheet waterproof structure according to any one of claims 1 to 6, wherein the resin sheet is provided with a primer layer on the resin layer side for improving the adhesive strength with the resin layer. At least one of the resin sheet and the resin layer contains a plasticizer,
The waterproof sheet structure according to any one of claims 1 to 7, wherein the resin sheet includes a transition prevention layer that prevents the transition of the plasticizer on the resin layer side.   The sheet waterproof structure according to any one of claims 1 to 8, wherein the resin sheet is a long sheet. Covering at least a part of the floor portion of the housing with a waterproof sheet, a construction method of a sheet waterproof structure for waterproofing the housing,
A film forming step of forming a film composed mainly of a thermosetting resin or a thermoplastic resin in an uncured or unsolidified state on at least a part of the floor;
A state in which one surface is made of a resin material that can be solvent-welded, sealed or heat-sealed to the other surface of the waterproof sheet, and one surface of the resin sheet is exposed Then, an arrangement step of arranging the resin sheet so as to be embedded in the coating,
A resin layer forming step of forming a resin layer by curing or solidifying the coating;
Prepare a waterproof sheet having the other surface mainly composed of vinyl chloride resin, and the other surface of the waterproof sheet with respect to one surface of the resin sheet by solvent welding, sealing welding, or heat sealing A method for constructing a waterproof sheet structure, comprising: a joining step for joining together.

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