Waterproof panel, waterproof panel set and waterproof structure

Abstract

To provide a waterproof panel and a waterproof panel set used for construction of a waterproof structure capable of executing construction of the waterproof structure easily and capable of easily drawing up a repair plan for repairing the constructed waterproof structure, and to provide a waterproof structure constructed using the waterproof panel and the waterproof panel set.SOLUTION: A plurality of waterproof panels 1 are used for forming a roof 100 (roof part of a skeleton) by being arranged and laid in a grid-like manner in a plan view. The waterproof panel 1 includes: a heat insulation plate 2 (substrate) having a polygonal shape in a plan view; and a waterproof sheet 8 laminated so as to cover a surface side opposite from the skeleton, when forming the roof 100. The waterproof sheet 8 includes a protrusion part 81 provided so as to protrude from at least one side of the heat insulation plate 2 in the plan view.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a waterproof panel, a waterproof panel set, and a waterproof structure. [Background technology]

[0002] Conventionally, houses have been known in which a heat-insulating panel installation section, in which a number of heat-insulating panels are installed, is used as the floor section of a roof or a balcony. In this heat-insulating panel installation section, a number of heat-insulating panels are arranged in a matrix, and between adjacent heat-insulating panels, one heat-insulating panel has a concave portion on the butted end face, and the other heat-insulating panel has a convex portion on the butted end face, and the concave portion of one heat-insulating panel engages with the convex portion of the other heat-insulating panel to connect the adjacent heat-insulating panels.

[0003] The insulation panel installation section is fixed to the ridgepole, purlins, rafters, etc. of the house using fixing screws to form the roof and floor, thereby ensuring waterproofing of the roof and floor. In other words, the insulation panel installation section forms a waterproof structure for the roof and floor.

[0004] Furthermore, in the insulating panel installation section having such a configuration, depending on the construction state, gaps may occur between adjacent insulating panels. If there are gaps, rainwater or the like may enter the house through the gaps and cause leaks. Therefore, it has been proposed to attach a strip-shaped waterproof sheet to cover the gaps, i.e., the edges of adjacent insulating panels, to prevent the intrusion of rainwater or the like (see, for example, Patent Document 1).

[0005] Furthermore, in such a section where a heat insulating panel is installed, the outermost surface of the heat insulating panel is formed of a resin layer (waterproof layer) for the purpose of imparting waterproofing to the heat insulating panel itself.

[0006] Therefore, in this insulation panel installation section, in order to provide the insulation panel installation section with waterproofing properties that prevent the intrusion of rainwater, etc., into the insulation panel installation section, both the resin layer provided on the insulation panel and the band-shaped waterproof sheet are exposed on the outermost surface of the insulation panel installation section.

[0007] Here, both the resin layer and the waterproof sheet are preferably composed mainly of polyvinyl chloride resin for the purpose of imparting excellent waterproofing, but generally, there is a difference in durability (lifetime) between the resin layer and the waterproof sheet due to differences in the content of the main material, the film thickness, etc. Therefore, the insulation panel installation part (waterproof structure) having such a configuration has a problem that the renovation plan when renovating the insulation panel installation part is complicated.

[0008] In addition, this insulation panel installation section is formed by arranging a large number of insulation panels in a matrix and then covering the edges of adjacent insulation panels with a strip-shaped waterproof sheet, but in this case, it is required to cover the waterproof sheet with high precision in correspondence with the edges of adjacent insulation panels. Therefore, there has been a need to develop a configuration for the insulation panel installation section that makes it easier to construct the insulation panel installation section. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] JP 2007-120248 A Summary of the Invention [Problem to be solved by the invention]

[0010] The object of the present invention is to provide a waterproof panel and a waterproof panel set used in the construction of a waterproof structure, which allows for easy construction of the waterproof structure and enables easy formulation of a renovation plan for renovating the constructed waterproof structure, and a waterproof structure constructed using such a waterproof panel and a waterproof panel set. [Means for solving the problem]

[0011] Such an object can be achieved by the present invention described in (1) to (9) below. (1) A waterproof panel used to form a roof portion of a structure by laying multiple panels in a lattice pattern in a plan view, The waterproof panel has a substrate having a polygonal shape in a plan view and a waterproof sheet laminated so as to cover the surface side opposite the structure when the roof portion is formed, A waterproof panel characterized in that the waterproof sheet is arranged to protrude from at least one side of the substrate when viewed in a plan view.

[0012] (2) A waterproof panel set having a plurality of waterproof panels used to form a roof portion of a structure by arranging a plurality of panels in a lattice pattern in a plan view, Each of the plurality of waterproof panels has a substrate that is polygonal in plan view and a waterproof sheet that is laminated so as to cover the surface side opposite the structure when the roof portion is formed, The waterproof panel set is characterized in that the waterproof panels include a protruding waterproof panel in which the waterproof sheet protrudes from at least one side of the substrate when viewed in the plane, and a non-protruding waterproof panel in which the waterproof sheet does not protrude from the substrate when viewed in the plane.

[0013] (3) A waterproof structure in which a plurality of waterproof panels are arranged in a lattice pattern in a plan view to form a roof portion of a structure, Each of the waterproof panels has a substrate that is polygonal in plan view and a waterproof sheet that is laminated so as to cover the surface side opposite the body, In at least one of the plurality of waterproof panels, the waterproof sheet has a protruding portion protruding from at least one side of the substrate in the plan view, A waterproof structure characterized in that the protrusion forms an overlapping portion at the edge of adjacent waterproof panels, with the waterproof sheet of the adjacent waterproof panels on the lower side and the protrusion of the waterproof sheet on the upper side, and the waterproof sheets are joined together at the overlapping portion.

[0014] (4) The waterproof structure according to (3) above, wherein the substrate is a heat-insulating panel having heat-insulating properties. (5) A waterproof structure according to (3) or (4) above, wherein the plurality of waterproof panels include a substrate in which the polygon is a rectangle.

[0015] (6) In the substrate in which the polygon is a rectangle, the long sides are defined as the first and third sides, and the short sides are defined as the second and fourth sides, The waterproof structure described in (5) above, wherein the multiple waterproof panels are arranged in a line in the long side and short side directions of the waterproof panels, with the first side and the third side facing each other and the second side and the fourth side facing each other between adjacent waterproof panels.

[0016] (7) The waterproof structure described in (5) or (6) above, comprising as the waterproof panel at least one of a first waterproof panel having, in the planar view, the protruding portion where the waterproof sheet protrudes from one of the first side to the fourth side; a second waterproof panel having the protruding portion where the waterproof sheet protrudes from two of the first side to the fourth side; a third waterproof panel having the protruding portion where the waterproof sheet protrudes from three of the first side to the fourth side; and a fourth waterproof panel having the protruding portion where the waterproof sheet protrudes from four of the first side to the fourth side.

[0017] (8) The waterproof structure according to any one of (5) to (7) above, further comprising, as the waterproof panel, a waterproof panel no. 0 in which the waterproof sheet does not protrude from the first to fourth sides when viewed in the plane.

[0018] (9) In each of the plurality of waterproof panels, The waterproof structure described in (6) above, wherein the surface of the substrate facing the waterproof sheet forms an inclined surface that is inclined with respect to the horizontal direction from the first side toward the third side. Effect of the Invention

[0019] According to the waterproof panel and the waterproof panel set of the present invention, it is possible to easily carry out the construction of a waterproof structure by using at least one of them. Furthermore, it is possible to easily formulate a repair plan for repairing the constructed waterproof structure. [Brief description of the drawings]

[0020] [Figure 1] 1 is a plan view showing a first embodiment of a waterproof structure of the present invention. [Diagram 2] 2 is a cross-sectional view taken along line AA in FIG. 1. [Diagram 3] FIG. 2 is a cross-sectional view taken along line BB in FIG. [Figure 4] 2 is a cross-sectional view taken along line CC in FIG. 1. [Diagram 5] 1 is a plan view showing a preferred embodiment of a waterproof panel set of the present invention. [Figure 6] FIG. 4 is a partial vertical cross-sectional view showing a second embodiment of the waterproof structure of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The waterproof panel, waterproof panel set, and waterproof structure of the present invention will be described in detail below with reference to preferred embodiments shown in the accompanying drawings.

[0022] First, prior to describing the waterproof panel and waterproof panel set of the present invention, a waterproof structure (waterproof structure of the present invention) constructed using the waterproof panel and waterproof panel set of the present invention will be described.

[0023] In the following, an example will be described in which the waterproof structure (the waterproof structure of the present invention) is applied to a sloping roof of a house.

[0024] <Waterproof structure> <<First embodiment>> FIG. 1 is a plan view showing a first embodiment of the waterproof structure of the present invention, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, FIG. 3 is a cross-sectional view taken along line BB in FIG. 1, and FIG. 4 is a cross-sectional view taken along line CC in FIG. 1. For ease of explanation, the left-right direction in FIG. 1 is taken as the X-axis direction, and the up-down direction is taken as the Y-axis direction, as shown in FIG. 1. The upper side in FIG. 2 to FIG. 4 may be referred to as "upper" or "upper side", and the lower side as "lower" or "lower". The left side in FIG. 2 may be referred to as the "downstream side", and the right side as the "upstream side".

[0025] As shown in FIG. 1, the waterproof structure 10 is applied to and constructed on a roof 100 (roof portion) of a house, and in this embodiment, includes a plurality of waterproof panels 1 and a plurality of fixing screws 9.

[0026] This roof 100 is inclined with respect to the horizontal direction for the purpose of providing good drainage. This inclination direction α is the same as the Y-axis direction in Fig. 1. In this roof 100, the waterproof structure 10 is fixed to the purlin 91, ridge pole, rafters (not shown) and the like of the house, i.e., is fixed to the house via the purlin 91, ridge pole, rafters and the like, thereby fulfilling its function as a roof.

[0027] Moreover, in the present invention, the waterproof structure 10 is configured to include a plurality of waterproof panels 1. By providing the waterproof structure 10 with a plurality of waterproof panels 1 in this way, the waterproof structure 10 can exhibit excellent waterproof properties, which will be described in detail later.

[0028] The configuration of each part of the waterproof structure 10 will be described below. As shown in Figures 1 to 4, the waterproof panel 1 has an insulating board 2 (substrate) having insulating properties, which is made of a flat plate that is rectangular (square) in plan view, and a waterproof sheet 8 laminated so as to cover one side (top surface) of the insulating board 2 (insulating panel).

[0029] As shown in FIG. 1, in this embodiment, the insulating plate 2 is a flat plate having a polygonal rectangular (quadrilateral) shape when viewed in a plane, and as shown in FIG. 4, is a member having a plurality of through holes 15 penetrating in the thickness direction.

[0030] Multiple insulation boards 2 are laid in a lattice pattern in the same direction in both the short side and long side directions to form an insulation board installation section 30 (substrate installation section), which constitutes the main part of the roof 100, which has an overall flat shape.

[0031] In this embodiment, the long side direction of the heat insulating board 2 (waterproof panel 1) is parallel to the X-axis direction, and the short side direction is parallel to the Y-axis direction. That is, when the long sides of the heat insulating board 2 are the first side and the third side, and the short sides are the second side and the fourth side, the first side and the third side are parallel to the X-axis direction, and the second side and the fourth side are parallel to the Y-axis direction.

[0032] The multiple insulating plates 2 are laid in a grid pattern in the X-axis direction and the Y-axis direction, with the first and third sides parallel to the X-axis direction facing each other between adjacent insulating plates 2, and the second and fourth sides facing each other between adjacent insulating plates 2. Depending on the size and shape of the roof 100, the number of insulating plates 2 laid in the X-axis direction and the number of insulating plates 2 laid in the Y-axis direction may be the same or different.

[0033] Except for the different locations of the insulating plates 2, each has the same laminated structure made of a laminate of multiple layers (see Figs. 2 and 3). Below, the laminated structure of one insulating plate 2 will be described as a representative example.

[0034] As shown in Figures 2 to 4, in this embodiment, the insulating board 2 is a laminated board made of a laminate having a resin layer 3, a metal layer 4a, a metal layer 4b, a resin layer 5a, and a resin layer 5b.

[0035] The resin layer 3 is made of, for example, polyurethane foam, and is the part of the heat insulating board 2 that exhibits heat insulation properties.

[0036] A metal layer 4a is laminated on the lower surface side of the resin layer 3, and a metal layer 4b is laminated on the upper surface side of the resin layer 3. The metal layer 4a and the metal layer 4b are made of various steel plates such as Galvalume Steel Plate (registered trademark) and stainless steel plate, and are the parts of the heat insulating plate 2 that exhibit environmental resistance (anti-corrosion properties).

[0037] The resin layer 3 is thicker than the metal layers 4a and 4b, and is preferably from 2 to 100 times, and more preferably from 50 to 80 times, the thickness of the metal layer 4a (metal layer 4b). In this case, for example, the thickness of the resin layer 3 can be about 35 mm, and the thicknesses of the metal layers 4a and 4b can each be about 0.5 mm.

[0038] The resin layer 5a and the resin layer 5b are, for example, films made of polyvinyl chloride. The resin layer 5a covers the metal layer 4a and provides rust prevention and waterproofing to the metal layer 4a. The resin layer 5b covers the metal layer 4b and provides rust prevention and waterproofing to the metal layer 4b.

[0039] In the insulating board 2 having such a configuration, as shown in Figures 2 to 4, a waterproof sheet 8, which will be described later, is laminated on the resin layer 5b. Therefore, since the waterproof sheet 8 can exert the functions of rust prevention and waterproofing on the metal layer 4b, it is possible to omit the formation of the resin layer 5b in the insulating board 2. However, by providing the insulating board 2 with the resin layer 5b as in this embodiment, it is possible to improve the adhesion between the insulating board 2 (resin layer 5b) and the waterproof sheet 8.

[0040] As described above, the roof 100 is inclined with respect to the horizontal direction. Therefore, the insulation plate installation section 30 (multiple insulation plates 2) constituting the main part of the roof 100 is also installed on the house in an attitude inclined with respect to the horizontal direction. This improves drainage on the roof 100, since, for example, rainwater flows down from the upstream side (above the inclination direction α) to the downstream side (below the inclination direction α). Note that the inclination angle θ1 (see FIG. 2) of the insulation plate installation section 30 (insulation plates 2) is not particularly limited.

[0041] As described above, the insulating plate 2 is a flat plate having a rectangular (quadrilateral) shape in a plan view, and in this embodiment, its ends can be divided into an end 11 (first end) and an end 13 (third end) along the long side direction (X-axis direction), and an end 12 (second end) and an end 14 (fourth end) along the short side direction (Y-axis direction) (see Figure 1).

[0042] As shown in Fig. 2, at end portion 13 corresponding to the third side, a protrusion 6 is formed so as to protrude toward the right side in the figure from an end face constituting end portion 13. This protrusion 6 is a protruding stripe formed along the long side direction (X-axis direction), that is, from the front side to the back side of the paper in Fig. 2.

[0043] Further, at the end 11 corresponding to the first side, a recess 7 is formed recessed toward the right side in Fig. 2 from the end face constituting this end 11. This recess 7 is a groove formed along the long side direction (X-axis direction), that is, from the front side to the back side of the paper in Fig. 2. Note that the depth of the recess 7 is preferably greater than the protrusion amount of the protrusion 6.

[0044] In the insulation plate installation section 30, the insulation plates 2 adjacent to each other in the short side direction (Y-axis direction) can be engaged with each other by butting the recessed portion 7 of one insulation plate 2 with the protruding portion 6 of the other insulation plate 2. This connects (joins) both insulation plates 2 to each other, thereby regulating their relative positions in the Y-axis direction.

[0045] In addition, both of these heat insulating plates 2 are inclined. Therefore, the heat insulating plate 2 located on the upper side in the inclination direction α presses the heat insulating plate 2 located below it by gravity. This causes the protrusion 6 to be inserted as deeply as possible into the recess 7, and therefore the engagement between the protrusion 6 and the recess 7 becomes stronger.

[0046] Furthermore, since the convex portions 6 are formed as ridges and the concave portions 7 are formed as grooves, the engagement between the convex portions 6 and the concave portions 7 is further strengthened. This makes it possible to reliably prevent the insulation board 2 from being unintentionally removed due to, for example, a strong wind, etc., and therefore the roof 100 can be used safely and comfortably.

[0047] As shown in FIG. 3, the end portion 12 corresponding to the second side, i.e., the end face constituting the end portion 12, is a flat portion that is flat along the short side direction (Y-axis direction), in other words, from the front side to the back side of the paper in FIG. 3.

[0048] Furthermore, like the end 12, the end 14 corresponding to the fourth side, i.e., the end face constituting the end 14, is also flat along the short side direction (Y-axis direction), in other words, from the front side to the back side of the paper in Fig. 3. Moreover, the end 12 and the end 14 having such a flat shape are each formed perpendicular to the surface direction of the insulating board 2 in a plan view.

[0049] In the insulation plate installation section 30, adjacent insulation plates 2 in the long side direction (X-axis direction) face each other by butting the end 12 of one insulation plate 2 against the end 14 of the other insulation plate 2.

[0050] As shown in Fig. 1, each insulation board 2 has a plurality of through holes 15 formed at approximately equal intervals, as described above. Then, as shown in Fig. 4, a fixing screw 9 is inserted into each through hole 15, and further, this fixing screw 9 is screwed into a through hole having an internal thread provided in a main building 91 of the house. In this way, each insulation board 2, i.e., the insulation board installation section 30, is fixed to the main building 91, i.e., the house, by the fixing screw 9.

[0051] The waterproof sheet 8 is laminated so as to cover almost the entire upper surface of the heat insulating board 2 (resin layer 5b), that is, the surface opposite to the main building 91 (framework) of the house.

[0052] In plan view, the waterproof sheet 8 has a protruding portion 81 protruding from at least one side of the thermal insulation board 2. In addition, this protruding portion 81 forms an overlapping portion 85 at the edge portions of adjacent waterproof panels 1 (thermal insulation boards 2) where the waterproof sheets 8 of adjacent waterproof panels 1 are overlapped with the protruding portion 81 of the waterproof sheet 8 on the upper side and the waterproof sheets 8 on the lower side, and the waterproof sheets 8 are joined to each other at the overlapping portion 85.

[0053] More specifically, as shown in FIG. 1, in the present embodiment, in the waterproof structure 10, of the four waterproof panels 1 located in the center, in the waterproof panels 1A and 1B located in the upper left and upper right, the protrusions 81 are provided so as to protrude in a band shape in a planar view from a total of three sides, namely, the end 11 of the first side and the end 13 of the third side along the X-axis direction, and the end 14 of the fourth side along the Y-axis direction.

[0054] The protruding portion 81 protruding from the end portion 11 is an edge portion of the waterproof panels 1 (insulating boards 2) adjacent in the +Y-axis direction, and forms an overlapping portion 85 having a band-like shape in plan view with the waterproof sheets 8 of adjacent waterproof panels 1 on the lower side and the protruding portion 81 of the waterproof sheets 8 on the upper side in the thickness direction of the insulating board 2, thereby joining the waterproof sheets 8 to each other. The protruding portion 81 protruding from the end portion 13 is an edge portion of the waterproof panels 1 (insulating boards 2) adjacent in the -Y-axis direction, and forms an overlapping portion 85 having a band-like shape in plan view with the waterproof sheets 8 of adjacent waterproof panels 1 on the lower side and the protruding portion 81 of the waterproof sheet 8 on the upper side in the thickness direction of the insulating board 2, thereby joining the waterproof sheets 8 to each other. This allows the waterproof sheet 8 (protrusion 81) to function as a member that covers the boundary 25A between adjacent insulation boards 2 in the short side direction (Y-axis direction), i.e., the area between end 11 and end 13, along the X-axis direction, thereby reliably preventing water such as rainwater from entering the interior of the house through the boundary 25A formed along the X-axis direction (see Figure 2).

[0055] Furthermore, the protruding portion 81 protruding from the end portion 14 forms an overlapping portion 85 having a band-like shape in plan view with the waterproof sheets 8 of adjacent waterproof panels 1 on the lower side and the protruding portion 81 of the waterproof sheets 8 on the upper side in the thickness direction of the insulating board 2 at the edge of the waterproof panels 1 (insulating boards 2) adjacent in the -X-axis direction, thereby joining the waterproof sheets 8 to each other. This allows the waterproof sheet 8 (protruding portion 81) to function as a member that covers the boundary portion 25B between the insulating boards 2 adjacent in the long side direction (X-axis direction), i.e., the space between the end portion 12 and the end portion 14, along the Y-axis direction, thereby reliably preventing water such as rainwater from entering the inside of the house through the boundary portion 25B formed along the Y-axis direction (see FIG. 3).

[0056] Also, as shown in FIG. 1, in the waterproof panels 1C and 1D located at the lower left and lower right of the four waterproof panels 1 located in the central portion, the protrusions 81 are each provided in a band-like shape protruding from one side of the end portion 14 of the fourth side along the Y-axis direction.

[0057] The protrusion 81 protruding from the end 14 forms an overlapping portion 85 at the edge of adjacent waterproof panels 1 (insulating board 2) in the -X axis direction, and in the thickness direction of the insulating board 2, the waterproof sheets 8 of adjacent waterproof panels 1 are on the lower side and the protrusion 81 of this waterproof sheet 8 is on the upper side, forming a band-shaped overlapping portion 85 in a planar view, thereby joining the waterproof sheets 8 to each other.

[0058] In addition, this waterproof sheet 8 may not have a protrusion 81 protruding from at least one side of the insulation board 2 when viewed in a plan view, that is, in the waterproof panel 1, it may be laminated on the insulation board 2 without protruding from each side (four sides) of the insulation board 2.

[0059] In the waterproof panel 1 including the waterproof sheet 8 having such a configuration, the protruding portion 81 is arranged to protrude from the waterproof sheet 8 included in the waterproof panel 1 adjacent in the +Y-axis direction in correspondence with the end portion 11. Then, in the thickness direction of the heat insulating board 2, the waterproof sheets 8 are joined to each other by forming an overlapping portion 85 having a belt-like shape in plan view with the protruding portion 81 of the waterproof sheet 8 included in the adjacent waterproof panels 1 on the upper side and the waterproof sheet 8 without the protruding portion 81 on the lower side. Also, the protruding portion 81 is arranged to protrude from the waterproof sheet 8 included in the waterproof panel 1 adjacent in the -Y-axis direction in correspondence with the end portion 13. Then, in the thickness direction of the heat insulating board 2, the waterproof sheets 8 are joined to each other by forming an overlapping portion 85 having a belt-like shape in plan view with the protruding portion 81 of the waterproof sheet 8 included in the adjacent waterproof panels 1 on the upper side and the waterproof sheet 8 without the protruding portion 81 on the lower side. Furthermore, the protruding portion 81 is arranged to protrude from the waterproof sheet 8 included in the waterproof panel 1 adjacent in the +X-axis direction in correspondence with the end portion 12. Then, in the thickness direction of the heat insulating board 2, the waterproof sheets 8 of adjacent waterproof panels 1 are joined to each other by forming an overlapping portion 85 having a band-like shape in plan view, with the protruding portion 81 of the waterproof sheets 8 on the upper side and the waterproof sheets 8 without the protruding portion 81 on the lower side. Also, the protruding portion 81 is arranged to protrude from the waterproof sheets 8 of adjacent waterproof panels 1 in the -X axis direction in correspondence with the end portion 14. Then, in the thickness direction of the heat insulating board 2, the waterproof sheets 8 are joined to each other by forming an overlapping portion 85 having a band-like shape in plan view, with the protruding portion 81 of the waterproof sheets 8 of adjacent waterproof panels 1 on the upper side and the waterproof sheets 8 without the protruding portion 81 on the lower side.

[0060] Such a waterproof sheet 8 is composed of a resin sheet containing a resin material as a main material, which gives the waterproof sheet 8 waterproof properties, and thus provides the above-mentioned functions to the waterproof sheet 8.

[0061] The resin material is not particularly limited, and examples thereof include vinyl chloride resins such as polyvinyl chloride, polyolefin resins, and ethylene vinyl acetate copolymers, and one or more of these may be used in combination. Among these, vinyl chloride resins are preferable. This makes the waterproof sheet 8 excellent in thermal adhesion and solvent welding properties. The waterproof sheet 8 is laminated (attached) to the insulating board 2, and the lamination method may be, for example, a method using thermal adhesion or a method using welding using a solvent. Therefore, it is preferable for the waterproof sheet 8 to have excellent thermal adhesion and solvent welding properties in order to laminate (attach) the waterproof sheet 8 to the insulating board 2.

[0062] The vinyl chloride resin is not particularly limited as long as it is a polymer containing vinyl chloride, i.e., an oligomer, a prepolymer, or a polymer. Examples of the vinyl chloride resin include a monomer polymer of vinyl chloride, a copolymer of vinyl chloride with vinyl acetate, ethylene, propylene, or the like, and a mixture of two or more of these polymers.

[0063] The resin material may further contain various plasticizers, various stabilizers, various antioxidants, various ultraviolet absorbers, processing aids, lubricants, fillers, flame retardants, coloring materials, etc., and it is particularly preferable for the resin material to contain a plasticizer, which can provide the waterproof sheet 8 with better flexibility.

[0064] Furthermore, the waterproof sheet 8 may be composed of a single layer of the resin sheet, or may have a fiber layer interposed in the middle of the thickness direction, that is, a fiber layer (fiber sheet) sandwiched between a first resin layer and a second resin layer stacked in the thickness direction. This fiber layer is composed of an aggregate of fibers, and examples of such fiber layers include cloth such as woven fabric or nonwoven fabric, and fiber sheets such as nets formed with multiple lattices by warp and weft threads. By providing such a fiber layer, it is possible to improve strength (tear strength, tensile strength, etc.) and durability (resistance to repeated fatigue), etc.

[0065] The waterproof sheet 8 preferably has an average thickness t of about 0.5 mm or more and about 5.0 mm or less, and more preferably about 1.0 mm or more and about 2.5 mm or less, so that the waterproof sheet 8 can reliably perform the function of ensuring waterproofing for the inside of the house.

[0066] In the waterproof structure 10 configured as described above, as described above, a plurality of waterproof panels 1 (insulating plates 2) are laid in a lattice pattern to form a flat insulating plate installation section 30. The waterproof sheet 8 is laminated on the insulating plate installation section 30, i.e., the plurality of insulating plates 2, and these waterproof sheets 8 are joined at the overlapping section 85 where they are overlapped, thereby imparting waterproofing to the waterproof structure 10, which prevents water such as rainwater from penetrating into the inside of the house. In the waterproof structure 10, only the waterproof sheet 8 is exposed to the outside of the house as a member for imparting waterproofing. Therefore, when renovating the waterproof structure 10 (waterproof panel 1), it is only necessary to consider the degree of deterioration of the waterproof sheet 8, and therefore the renovation plan can be easily formulated.

[0067] The above-described waterproof structure 10 is constructed by using the waterproof panel set of the present invention, for example, by the construction method shown below.

[0068] (Waterproof construction method) Fig. 5 is a plan view showing a preferred embodiment of the waterproof panel set of the present invention. For ease of explanation, the left-right direction in the figure is defined as the X-axis direction, and the up-down direction is defined as the Y-axis direction, as shown in Fig. 5.

[0069] The construction method of this waterproof structure includes a waterproof panel preparation step, a waterproof panel installation step, and a waterproof sheet application step. Each of these steps will be described below in order.

[0070] [1] Waterproof panel preparation process First, a waterproof panel set 200 comprising a plurality of waterproof panels 1 is prepared, and among the waterproof panels 1 comprised in this waterproof panel set 200 (the waterproof panel set of the present invention), a waterproof panel 1 having the form required for forming (constructing) the waterproof structure 10 having the configuration described above is selected.

[0071] Specifically, first, a waterproof panel set 200 is prepared, which includes a waterproof panel 1 (protruding waterproof panel) having a protruding portion 81 in which a waterproof sheet 8 protrudes from at least one side of an insulating board 2 (substrate) that is rectangular in plan view, as shown in Figure 5, and a waterproof panel 1 (non-protruding waterproof panel) in which the waterproof sheet 8 does not protrude from the insulating board 2 in plan view.

[0072] In this embodiment, the waterproof panel set 200 includes, as protruding waterproof panels, a waterproof panel 1 (fourth waterproof panel) having a protruding portion 81 protruding from four sides (all sides) of a rectangular insulating board 2, a waterproof panel 1 (third waterproof panel) having a protruding portion 81 protruding from three sides, i.e., two short sides and one long side, of the insulating board 2, a waterproof panel 1 (third waterproof panel) having a protruding portion 81 protruding from three sides, i.e., one short side and two long sides, of the insulating board 2, a waterproof panel 1 (second waterproof panel) having a protruding portion 81 protruding from two sides, i.e., one short side and one long side, of the insulating board 2, and The waterproof panel set 200 includes a waterproof panel 1 (second waterproof panel) having a protruding portion 81 protruding from two of the two short sides of the insulation board 2, a waterproof panel 1 (second waterproof panel) having a protruding portion 81 protruding from two of the two long sides of the insulation board 2, a waterproof panel 1 (first waterproof panel) having a protruding portion 81 protruding from one of the long sides of the insulation board 2, and a waterproof panel 1 (first waterproof panel) having a protruding portion 81 protruding from one of the short sides of the insulation board 2, and includes a waterproof panel 1 (zeroth waterproof panel) in which the protruding portion 81 does not protrude from four sides (all sides) of the insulation board 2 as a non-protruding waterproof panel. Note that the waterproof panel set 200 may be one in which at least one waterproof panel 1 is omitted from the protruding waterproof panels and non-protruding waterproof panels configured as described above, depending on the configuration of the waterproof structure 10 to be formed (constructed).

[0073] Next, to form the waterproof structure 10 described in Figure 1, for example, of the four waterproof panels 1 in the central portion, waterproof panels 1A and 1B located at the upper left and upper right are selected which have protrusions 81 protruding from three sides, namely one short side and two long sides, of the insulation board 2, and waterproof panels 1C and 1D located at the lower left and lower right are selected which have a protrusion 81 protruding from one of the short sides of the insulation board 2 (see Figure 5).

[0074] [2] Waterproof panel installation process Next, to form the waterproof structure 10, multiple waterproof panels 1 selected from the waterproof panel set 200 are laid side by side in the X-axis direction and the Y-axis direction so that the insulating plates 2 form a lattice pattern, as shown in Figure 1, to form the insulating plate installation section 30.

[0075] In this case, in each waterproof panel 1, which is rectangular in plan view, the insulation plate 2 is arranged so that its long side is along the X-axis direction and its short side is along the Y-axis direction. Furthermore, in this case, the waterproof panels 1 are arranged so that the protrusion 81 protrudes from one of the opposing sides of the insulation plate 2 in adjacent waterproof panels 1 and does not protrude from the other side (see FIG. 1). That is, in the long side along the X-axis direction, the waterproof panels 1 are combined such that the strip-shaped protrusion 81 protrudes from one of the opposing ends 11, 13 and does not protrude from the other, and in the short side along the Y-axis direction, the waterproof panels 1 are combined such that the strip-shaped protrusion 81 protrudes from one of the opposing ends 12, 14 and does not protrude from the other. As a result, the protruding portion 81 protruding from one waterproof panel 1 forms an overlapping portion 85 at the edge of the other waterproof panel, with the waterproof sheet 8 of the other waterproof panel 1 on the lower side and the protruding portion 81 of the one waterproof panel 1 on the upper side.

[0076] [3] Waterproof sheet attachment process Next, at the overlapping portion 85 formed by laying multiple waterproof panels 1, with the waterproof sheet 8 of the other waterproof panel 1 on the lower side and the protruding portion 81 of one waterproof panel 1 on the upper side, the waterproof sheet 8 and the protruding portion 81 are joined, i.e., the waterproof sheets 8 are joined to each other.

[0077] As a result, as shown in Fig. 2, the boundary 25A between adjacent insulating plates 2 in the Y-axis direction is covered with the waterproof sheet 8 (protrusion 81), and as shown in Fig. 3, the boundary 25B between adjacent insulating plates 2 in the X-axis direction is covered with the waterproof sheet 8 (protrusion 81). As a result, infiltration of water such as rainwater into the house through the boundaries 25A and 25B is prevented.

[0078] In addition, the method of joining the waterproof sheet 8 and the protrusion 81 at the overlapping portion 85 is not particularly limited, but examples include a method of supplying a liquid material such as a water-soluble solvent or adhesive to the overlapping portion 85, and then pressing the overlapping portion 85 to which the liquid material has been supplied from the front side of the protrusion 81.

[0079] The waterproof structure 10 is constructed through each of the above steps. According to this construction method, the waterproof structure 10 can be obtained through a simple process of joining the waterproof sheets 8 together at overlapping portions 85 formed by laying a plurality of selected waterproof panels 1 so that the insulating plates 2 form a lattice pattern. Furthermore, since the waterproof sheets 8 are also aligned by laying the insulating plates 2, the construction of the waterproof structure 10 can be performed easily and with excellent precision.

[0080] In this embodiment, the case has been described where the insulating plate 2 (substrate) in the waterproof panel 1 has a rectangular (square) shape when viewed in a plane; however, the planar shape of the insulating plate 2 is not limited to this case, and as long as a single (single sheet) waterproof structure 10 can be formed in a planar view by laying multiple waterproof panels 1 in a lattice pattern, the insulating plate 2 may have any polygonal shape, for example, a triangular, pentagonal or hexagonal shape.

[0081] In addition, in this embodiment, a case has been described in which the waterproof sheet 8 is bonded (laminated) in contact with the insulating board 2 (substrate) in the waterproof panel 1, but this is not limited to this, and for example, the waterproof panel 1 may be configured to have an intermediate layer, such as an adhesive layer, between the insulating board 2 and the waterproof sheet 8.

[0082] <<Second embodiment>> FIG. 6 is a partial vertical sectional view showing a second embodiment of the waterproof structure of the present invention.

[0083] Hereinafter, a second embodiment of the waterproof structure of the present invention will be described with reference to this figure, but the differences from the previously described embodiment will be mainly described, and a description of similar points will be omitted.

[0084] This embodiment is similar to the first embodiment, except that the configuration of each waterproof panel 1 included in the waterproof structure 10 is different.

[0085] As shown in Figure 6, in this embodiment, in each waterproof panel 1, the thickness of the insulation board 2 (resin layer 3) gradually increases along the short side direction (+Y axis direction), i.e., from the end 11 side of the first side toward the end 13 side of the third side.

[0086] As a result, when each waterproof panel 1 is positioned so that the surface (lower surface) of the insulation board 2 facing the resin layer 5a is aligned horizontally, the surface (upper surface) of the insulation board 2 facing the resin layer 5b, i.e., the surface of the insulation board 2 facing the waterproof sheet 8, forms an inclined surface that is inclined with respect to the horizontal direction from the end 11 side toward the end 13 side.

[0087] In the waterproof structure 10 of the first embodiment described above, the insulation plate installation section 30 (waterproof structure 10) formed by laying multiple waterproof panels 1 is fixed to the main house 91 in a tilted state with respect to the horizontal direction, forming an inclined surface along which rainwater, etc. flows from the upstream side (above the tilt direction α) to the downstream side (below the tilt direction α).

[0088] In contrast, in the waterproof structure 10 of this embodiment, as described above, the surface (upper surface) of the insulating board 2 on the resin layer 5b side forms an inclined surface. Therefore, by fixing the insulating board installation part 30 (waterproof structure 10) formed by laying a plurality of waterproof panels 1 to the purlin 91 so that the surface (lower surface) of the insulating board 2 on the resin layer 5a side is parallel to the horizontal direction, rainwater and the like can be made to flow down the inclined surface from the upstream side (above the inclination direction α) to the downstream side (below the inclination direction α).

[0089] The waterproof structure 10 of the second embodiment as described above also provides the same effects as those of the first embodiment.

[0090] Although the waterproof panel, waterproof panel set, and waterproof structure of the present invention have been described above with reference to the illustrated embodiments, the present invention is not limited thereto, and each part constituting the waterproof panel, waterproof panel set, and waterproof structure can be replaced with any other component capable of exerting the same function. In addition, any other component may be added.

[0091] Furthermore, the waterproof structure of the present invention may be a combination of any two or more configurations (features) of the above-described embodiments.

[0092] Further, in each of the above embodiments, the location where the waterproof structure is applied is the roof, but this is not limited to this and may be a rooftop, a balcony floor, or the like. [Explanation of symbols]

[0093] 10 Waterproof structure 1 Waterproof panel 1A Waterproof Panel 1B Waterproof panel 1C Waterproof panel 1D Waterproof Panel 2. Insulation board 3 Resin layer 4a metal layer 4b metal layer 5a Resin layer 5b Resin layer 6 Convex 7 Recess 8. Tarpaulin 9 Fixing screws 11 End (first end) 12 End (second end) 13 End (3rd end) 14 End (4th end) 15 Through hole 25A Boundary 25B Boundary 30 Insulation board installation section 81 Protrusion 85 Overlap 91 Main building 100 Roof 200 Waterproof Panel Set t Average thickness α Tilt direction θ1 tilt angle

Claims

1. A waterproof panel used to form a roof portion of a structure by laying a plurality of sheets in a lattice pattern in a plan view, The waterproof panel has a substrate having a polygonal shape in a plan view and a waterproof sheet laminated so as to cover the surface side opposite the structure when the roof portion is formed, A waterproof panel characterized in that the waterproof sheet is arranged to protrude from at least one side of the substrate when viewed in a plan view.

2. A waterproof panel set having a plurality of waterproof panels used to form a roof portion of a structure by arranging a plurality of panels in a lattice pattern in a plan view, Each of the plurality of waterproof panels has a substrate that is polygonal in plan view and a waterproof sheet that is laminated so as to cover the surface side opposite the structure when the roof portion is formed, The waterproof panel set is characterized in that the waterproof panels include a protruding waterproof panel in which the waterproof sheet protrudes from at least one side of the substrate when viewed in the plane, and a non-protruding waterproof panel in which the waterproof sheet does not protrude from the substrate when viewed in the plane.

3. A waterproof structure in which a plurality of waterproof panels are arranged in a lattice pattern in a plan view to form a roof portion of a structure, Each of the waterproof panels has a substrate that is polygonal in plan view and a waterproof sheet that is laminated so as to cover the surface side opposite the body, In at least one of the plurality of waterproof panels, the waterproof sheet has a protruding portion protruding from at least one side of the substrate in the plan view, A waterproof structure characterized in that the protrusion forms an overlapping portion at the edge of adjacent waterproof panels, with the waterproof sheet of the adjacent waterproof panels on the lower side and the protrusion of the waterproof sheet on the upper side, and the waterproof sheets are joined together at the overlapping portion.

4. The waterproof structure according to claim 3 , wherein the substrate is a heat insulating panel having heat insulating properties.

5. The waterproof structure according to claim 3 , wherein the plurality of waterproof panels include a substrate in which the polygon is a rectangle.

6. In the substrate in which the polygon is the rectangle, the long sides are the first and third sides, and the short sides are the second and fourth sides, The waterproof structure described in claim 5, wherein the multiple waterproof panels are laid side by side in the long side and short side directions of the waterproof panels, with the first side and the third side facing each other and the second side and the fourth side facing each other between adjacent waterproof panels.

7. The waterproof structure described in claim 6 comprises, as the waterproof panel, at least one of a first waterproof panel having, in the planar view, the protrusion where the waterproof sheet protrudes from one of the first side to the fourth side, a second waterproof panel having the protrusion where the waterproof sheet protrudes from two of the first side to the fourth side, a third waterproof panel having the protrusion where the waterproof sheet protrudes from three of the first side to the fourth side, and a fourth waterproof panel having the protrusion where the waterproof sheet protrudes from four of the first side to the fourth side.

8. The waterproof structure according to claim 7 further comprises a waterproof panel No. 0, in which the waterproof sheet does not protrude from the first side to the fourth side in the plan view.

9. In each of the plurality of waterproof panels, The waterproof structure according to claim 6 , wherein the surface of the substrate facing the waterproof sheet forms an inclined surface that is inclined with respect to the horizontal direction from the first side toward the third side.

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