JP5290648B2 - Building material sheet and building laying material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a building material sheet which secures proper permeability, particularly in a ceiling. <P>SOLUTION: A netlike article, in which meshes are regularly repeated, is molded from a wire of a thickness of 0.1-10 mm, so as to constitute the building material sheet including a plurality of protrusions with a height of 5 mm or more. The building material sheet, which is used in a general building, brings about an effect of enhancing permeability in a laying location. The building material sheet is effective, in particular, as an in-ceiling laying material between a sheathing roof board and a roof tile, a laying material for a wall surface, which is laid between exterior and interior walls, and an underfloor laying material which is laid between a flooring material and an underfloor substrate material. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  TECHNICAL FIELD The present invention relates to a building material sheet used for construction of a ceiling, a roof, a wall, and a floor in a house or a building in general, and a building laying material using the same.

  When constructing a building such as a residence, various construction methods or materials are used to ensure sufficient ventilation and air permeability. For example, Patent Document 1 proposes a building sheet that includes a core member that is entangled with a fibrous synthetic resin and has a hollow structure with a three-dimensional arrangement with high pressure resistance. This building sheet is disposed between a roof base plate and a tile, a decorative slate plate, a metal plate, and the like to form a ventilation layer, thereby obtaining the effect of moisture removal and ventilation.

  In addition, Patent Document 2 is provided with a ventilation plate formed by molding a number of hollow cones on a plastic plate such as polypropylene for the purpose of ensuring heat insulation and heat insulation ventilation on a roof, a wall, and the like. A heat-insulating ventilation member provided with a heat shield cover on the front side of the bottom opening side of the group, and a plate formed by laminating a large number of hard plastic monofilaments in a random loop shape, and having a plurality of thickness portions Proposed a heat-insulating and heat-insulating air-permeable material that is provided with a ventilation plate consisting of cylindrical cavities arranged in a row and a loop crushing layer covering the front and back, and a heat-insulating cover is attached to at least one entire surface of the ventilation plate. ing. In the heat insulating and heat insulating ventilation material described in Patent Document 2, the space between the hollow cones or the cylindrical cavity serves as a ventilation space to ensure air permeability.

JP 2003-278285 A JP 2006-169951 A

  The building sheet described in Patent Document 1 uses a sheet V-shaped sheet that is formed by intertwining in a fiber shape as a core member in order to increase pressure resistance. Since the sheet-like material formed by intertwining the fibrous synthetic resin is obtained by discharging and accumulating the molten synthetic resin from the nozzle, the manufacturing method is easy, but in some cases, the sheet is formed. There are cases where a region where the filaments are densely integrated and fused and a region where the filaments are not accumulated and the gap portion is large are formed. When a member using a sheet in which the filaments constituting such a sheet are uniformly dispersed and not integrated is used as a building material, pressure was applied by concentrating on the sparse region constituting the filaments. In this case, only the area is easily destroyed, and there is a possibility that the entire sheet is destroyed. In addition, when the undulation is provided on the sheet, if the portion where the sheet is folded coincides with the portion where the filaments are densely accumulated, the workability is poor and the undulation cannot be provided uniformly.

  The sheet described in Patent Document 2 has no air permeability in the thickness direction because the plastic plate is formed into a cone. In addition, since the conical protrusion itself does not have elasticity, if the weight of the craftsman riding on the slate roof tile is added to this sheet during the operation of rolling the slate roof tile, the slate roof tile breaks without stress being released. Or the sheet itself can be destroyed. Further, in the sheet having a cylindrical cavity described in Patent Document 2, since the hard plastic monofilament is deposited in a loop shape, the air permeability is ensured, but the filament wraps around in a spiral shape. Since the cylindrical hollow portion is arranged in the horizontal direction with respect to the surface direction of the sheet, it is vulnerable to stress from the thickness direction, and the sheet itself may be destroyed.

  The present invention has been made in view of the problems of conventional building material sheets, and is difficult to break during and after construction, and has a high air permeability after construction. Ceiling, roof, wall and floor It is an object of the present invention to provide a building material sheet that can be easily applied to such a part, and a building laying material and a ventilation structure using the same.

  The present invention provides a building material sheet including a plurality of convex portions having a height of 5 mm or more, in which a net-like object having a mesh of regularly repeating is formed by a line having a thickness of 0.1 to 10 mm.

  The present invention provides a ceiling laying material in which the building material sheet of the present invention is disposed between a field board and a roof tile. In this roof structure, since the building material sheet of the present invention as a ventilation layer is arranged between the field board and the tile, the air permeability under the tile is improved, thereby improving the durability of the house. At the same time, the indoor environment is improved. In the present specification, the “tile” includes what is provided as a so-called roofing material (including a metal material).

  The present invention provides a wall surface laying material in which the building material sheet of the present invention is disposed between an outer wall material and an inner wall material. In this wall surface structure, the building material sheet of the present invention, which becomes a ventilation layer, is arranged between the outer wall material and the inner wall material, so that the air permeability under the outer wall is improved, thereby improving the durability of the house. In addition, the indoor environment is improved. In the present specification, the “outer wall material” is not particularly limited as long as it is a material used for an outer wall in a general building. For example, various siding materials made of metal, inorganic material, and wood material , Mortar materials, various coated wall materials such as plaster and diatomaceous earth, wall materials made of tiles and bricks, lightweight cellular concrete materials, slate, fiber reinforced plastic and tin.

  The present invention provides an underfloor laying material in which the building material sheet of the present invention is disposed between a floor material and an underfloor base material. In this underfloor structure, since the building material sheet of the present invention as a ventilation layer is disposed between the flooring and the underfloor base material, the underfloor permeability is improved, thereby improving the durability of the house. At the same time, the indoor environment is improved. In the present specification, the “floor material” is not particularly limited as long as it is a material used as a floor surface.

  The building material sheet of the present invention is composed of a net-like material in which the mesh is regularly repeated, and can be ventilated in any direction. Therefore, if the building material sheet of the present invention is used, good air permeability is ensured in the laid building, and moisture can be easily discharged. In addition, by having a plurality of convex portions, even if a force in the thickness direction is applied, the impact is absorbed and dispersed, so that the building material sheet itself or a member adjacent thereto is hardly broken. Therefore, the building material sheet of the present invention can be used without particular limitation on the ceiling, roof, wall and floor of a general building.

  The building material sheet of the present invention is characterized in that a net-like object having a mesh repeating regularly is formed by a line having a thickness of 0.1 to 10 mm, and includes a plurality of convex portions having a height of 5 mm or more. And By using a net (hereinafter also referred to as a “three-dimensionally molded net”) formed by forming a net-like object with a regular mesh and forming a plurality of convex portions, there is hardly any locally weak portion, By selecting the thickness of the net-like filaments and the mass per square meter of the three-dimensional molded net, it has sufficient strength and can be used in places where heavy objects such as roofs and ceilings cannot be used. It becomes a building material sheet.

  The thickness (diameter) of the filament which comprises a net-like object is 0.1-10 mm. The thickness of the filament is, if the cross-sectional shape of the filament is a shape considered to be a substantially perfect circle, the diameter is the diameter of the filament, and the cross-sectional shape other than the perfect circle, for example, the cross-sectional shape is an ellipse, a triangle, In the case of a polygonal shape such as a quadrangle, an irregular cross section that does not correspond to the cross-sectional shape, and a hollow wire having a void or a cavity inside the wire, in a cross-sectional view cut by a line perpendicular to the length direction of the wire, The length of the longest portion of the line segment connecting any two points on the outermost surface of the filament is defined as the diameter of the filament. The thickness of the filaments of the net-like material is measured using a commercially available measuring instrument such as a caliper, and the thickness of the filaments is measured at three or more locations in different places, and the average value constitutes the net-like material. It is defined as the thickness of the filament. The thickness of the filament is preferably 0.5 mm to 8 mm, and most preferably 0.8 mm to 5 mm. When the thickness is less than 0.1 mm, the stiffness of the filaments disappears, and the three-dimensional molded net provided with the convex portions does not have elasticity, making it difficult for the three-dimensional molded net to maintain the three-dimensional structure of unevenness. There is. When the thickness of the filament exceeds 10 mm, in the three-dimensional molded net provided with the convex portion, the voids are reduced, the air permeability is deteriorated, or the workability when the convex portion is provided is extremely reduced, so that the three-dimensional molding is performed. The net may not be obtained.

  The material that can be used for the net-like object having a regular mesh constituting the building material sheet of the present invention can be used as long as it is a so-called plastic material that can be provided with a convex portion. Since it is used as a building material sheet, it is possible to use a plastic material that does not easily cause corrosion such as oxidation in the air, or a metal material whose surface is covered with a rust-proof coating. Various plastic materials are available as plastic materials that are not easily corroded in the air, and thermoplastic resins and thermosetting resins can be used. For example, olefin resin (for example, polypropylene, polyethylene, propylene copolymer, ethylene-vinyl alcohol copolymer), polyester resin (for example, polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate), polyamide resin, for example. (For example, nylon 6, nylon 66), and engineer plastic resin (for example, polycarbonate, polyacetal), but are not limited thereto, use in a dry atmosphere, or use time In a use environment in which the building material sheet is preferably decomposed by the above, a resin having biodegradability (for example, polylactic acid resin, polycaprolactone resin, polybutylene succinate resin) can be used. As a net-like material made of a metal material having a rust-proofing film, a metal net-like material that has been given rust-proofing properties by painting a general mesh-like wire mesh, or a dense metal surface Examples thereof include a net-like material made of a material such as stainless steel on which a protective film is formed. As described above, the material of the net-like material is not particularly limited as long as it is a plastic material, but it is preferably made of resin in consideration of the elasticity after molding and the mass per certain area.

  Examples of materials that can be used for the net-like material include the above-mentioned materials. In particular, when a thermoplastic resin is used, it is easy to knead various additives when producing the net-like material from the resin pellets. It is preferable because a function can be added. One example is adding carbon black. By adding carbon black to the resin, the weather resistance of the net-like material made of the resin is improved. Further, since carbon black is inexpensive, it is preferably used as an additive for improving weather resistance. The amount of carbon black added is not particularly limited as long as productivity is not impaired. For example, carbon black is preferably added so as to occupy 0.1 to 5% by mass, more preferably 0.5 to 2% by mass of the entire resin. If the amount of carbon black added is less than 0.1% by mass, the weather resistance cannot be sufficiently improved, and if it exceeds 5% by mass, the productivity may be deteriorated. Note that the additive is not limited to carbon black, and the one that has been kneaded with various additives that are known to exhibit an effect when kneaded into a resin constitutes the building material sheet of the present invention. It can be used as a raw material for nets.

  When a thermoplastic resin is used as the net-like material, it is preferably made of an olefin resin. Olefin resin is excellent in weather resistance and chemical resistance, and has a relatively low melting point. Therefore, as will be described later, the processing when the sheet is integrated with other sheet-like materials having substantially no projections is possible. Easy. The olefin resin preferably contains high-density polyethylene or polypropylene resin, and more preferably contains 90% by mass or more of high-density polyethylene or polypropylene resin. By containing high-density polyethylene or polypropylene resin, the three-dimensional molded net is prevented from becoming too brittle, it is difficult to break even when stress is applied, and the three-dimensional molded net is prevented from becoming too soft, and three-dimensional molded The protruding part of the net is not easily crushed. That is, by using high-density polyethylene or polypropylene resin, a three-dimensional molded net having appropriate elasticity can be obtained. The polypropylene resin here includes not only polypropylene but also a propylene copolymer containing 50% by mass or more of a propylene component.

  When the building material sheet of the present invention is used as a member laid at a high place like a ceiling laying material, it is generally required to be lightweight and not have water absorption. Therefore, among the above usable materials, high-density polyethylene or polypropylene resin is preferable. That is, the specific gravity of high density polyethylene or polypropylene resin is 1.0 or less, which is small among thermoplastic resins. In addition, high-density polyethylene and polypropylene resin are non-water-absorbing, so there is almost no increase in mass due to water absorption, which is particularly preferable for the above applications.

  The net-like material constituting the building material sheet of the present invention is not limited to the shape of the mesh portion, but the shape of the mesh portion is at least one shape selected from a triangle, a parallelogram, a parallelogram, and a circle. Preferably there is. Of the above shapes, triangles, parallelograms, and parallelograms are preferable because if the mesh portions are all the same shape, the entire plane can be filled with only one type of shape. As an example of the shape of the net part of the net-like object, a parallelogram is shown in FIG. 1, and a parallelogram (diamond) is shown in FIG. In addition, at the point where the line made of resin intersects with the line, the intersecting portion becomes flat, and the portion of the intersection spreads, so that the mesh portion may become a circle having substantially the same area. However, this is preferable because the areas of all the mesh portions can be easily equalized. FIGS. 3 and 4 show the nets having a circular mesh portion. Since the shape of the mesh portion of the net-like object is preferably equal to the length of each side, the mesh portion is preferably at least one shape selected from a regular triangle, a square, a regular hexagon, and a circle, most preferably. Is a case where the shape of the mesh portion of the three-dimensional molded net is composed of only one shape selected from a regular triangle, a square, a regular hexagon, and a circle.

  A net-like product is manufactured using the above-mentioned materials. Such a net-like product is a known manufacturing method, for example, extrusion molding or injection molding using a mold, extrusion molding or injection molding without using a mold. Manufactured by. A three-dimensional molded net constituting the building material sheet of the present invention can be obtained by forming convex portions on the net-like material obtained by these manufacturing methods. The height of the convex portion is 5 mm or more. If the height of the convex portion is less than 5 mm, the air permeability is lowered or the workability of the convex portion is deteriorated. The height of the convex portion is preferably 7 mm or more, and particularly preferably 10 mm or more.

The building material sheet of the present invention is not particularly limited as long as the height of the convex portion of the three-dimensional molded net is 5 mm or more. FIG. 5 shows a schematic diagram of the building material sheet of the present invention in which other sheets are laminated on the top and bottom. In this schematic view, the height of the convex portion is indicated by symbol 12 in FIG. The height 12 of the convex portion is the thickness of the entire building material sheet indicated by the symbol 9 in the figure (in the case where other sheets are laminated vertically, the sheet laminated on the upper side from the installation surface at the time of construction) The height to the upper surface, that is, the thickness of the sheet laminated on the upper side of the three-dimensional molded net represented by symbol 10 and the thickness of the sheet laminated on the lower side of the three-dimensional molded net represented by symbol 11, represented by symbol 13 The sum of the thickness of the convex portion of the three-dimensional molded net and the thickness of the concave portion of the three-dimensional molded net represented by symbol 14 plus the height 12 of the convex portion corresponds to the thickness 9 of the entire building material sheet) From the above, the thickness is obtained by subtracting the thickness of the sheets stacked one above the other and the thickness of the net-like material at each concave and convex portion, and the formula is expressed by formula (1).

h ₃ = H − {(h ₁ + h ₂ ) + (d ₁ + d ₂ )} (1)

h ₃ : height [mm] of the convex portion provided on the net-like object (symbol 12 in the figure)
H: Total thickness of building material sheet [mm] (symbol 9 in the figure)
h ₁ : Thickness [mm] of other sheets laminated on the upper side of the three-dimensional molded net
(Symbol 10 in the figure)
h ₂ : Thickness [mm] of other sheets laminated on the lower side of the solid molded net
(Symbol 11 in the figure)
d ₁ : Thickness [mm] of the three-dimensional molded net at the convex portion (symbol 13 in the figure)
d ₂ : Thickness [mm] of the solid molded net in the recess (symbol 14 in the figure)

In addition, the thickness of the three-dimensional molded net in a convex part and a recessed part can be measured using commercially available measuring instruments, for example, a caliper.

The building material sheet of the present invention can be used in a state in which another sheet is laminated on the lower side, that is, in a state in which another sheet is laminated on the side in contact with the construction surface. FIG. 6 shows a schematic diagram of the building material sheet of the present invention in which another sheet is laminated on the lower side. In this schematic view, the height of the convex portion is indicated by symbol 12 in FIG. The height 12 of the convex portion is the thickness of the entire building material sheet indicated by the symbol 9 in the figure (in the case where other sheets are laminated on the lower side, the three-dimensional molded net is provided from the installation surface at the time of construction. The height to the tip of the convex part, that is, the thickness of the sheet laminated on the lower side of the three-dimensional molded net represented by symbol 11, the thickness of the convex part of the three-dimensional molded net represented by symbol 13, and the symbol 14 The sum of the thicknesses of the concave portions of the three-dimensional molded net plus the height 12 of the convex portions corresponds to the thickness 9 of the entire building material sheet), the thickness of the sheet laminated on the lower side, the net of each uneven portion It is calculated | required by subtracting the thickness of a shape, and the type | formula is represented by Formula (2).

h ₃ = H− (h ₂ + (d ₁ + d ₂ )) (2)

h ₃ : height [mm] of the convex portion provided on the net-like object (symbol 12 in the figure)
H: Total thickness of building material sheet [mm] (symbol 9 in the figure)
h ₂ : Thickness [mm] of other sheets laminated on the lower side of the solid molded net
(Symbol 11 in the figure)
d ₁ : Thickness [mm] of the three-dimensional molded net at the convex portion (symbol 13 in the figure)
d ₂ : Thickness [mm] of the solid molded net in the recess (symbol 14 in the figure)

In addition, the thickness of the three-dimensional molded net in a convex part and a recessed part can be measured using commercially available measuring instruments, for example, a caliper.

The building material sheet of the present invention can be used for applications such as ensuring air permeability in buildings by laying a three-dimensional molded net as it is. FIG. 7 shows a schematic diagram of the building material sheet of the present invention when the three-dimensional molded net is laid as it is. In this schematic diagram, the height of the convex portion is indicated by symbol 12 in FIG. The height 12 of the convex part is the thickness of the entire building material sheet indicated by the symbol 9 in the figure, that is, the height from the construction surface to the convex vertex of the three-dimensional molded net, The equation is obtained by subtraction, and the equation is expressed by equation (3).

h ₃ = H− (d ₁ + d ₂ ) (3)

h ₃ : height [mm] of the convex portion provided on the net-like object (symbol 12 in the figure)
H: Total thickness of building material sheet [mm] (symbol 9 in the figure)
d ₁ : Thickness [mm] of the three-dimensional molded net at the convex portion (symbol 13 in the figure)
d ₂ : Thickness [mm] of the solid molded net in the recess (symbol 14 in the figure)

In addition, the thickness of the three-dimensional molded net in a convex part and a recessed part can be measured using commercially available measuring instruments, for example, a caliper.

  The height of the convex portion may be 5 mm or more, preferably 7 mm or more, more preferably 10 mm or more, regardless of the number of other sheets laminated on the three-dimensional molded net. Even if the convex part is made too high, the effect obtained by forming the convex part does not change, and if there is an excessive height, the force acting in the direction perpendicular to the height direction of the three-dimensional molded net (that is, when laying) Therefore, the upper limit of the height of the convex portion is preferably 35 mm, more preferably 30 mm.

  The thickness of the entire building material sheet of the present invention is preferably more than 5.5 mm, and preferably less than 40 mm. The total thickness of the building material sheet of the present invention is more preferably 7 to 35 mm, and particularly preferably 10 to 30 mm. When the thickness of the building material sheet of the present invention is 5.5 mm or less, it may be difficult to form a convex portion with a net-like material having a relatively thick line, and the mesh at the convex portion is small. Become. Moreover, there is a possibility that the elasticity becomes poor when stress is applied due to the reduced rigidity. When the thickness of the entire building material sheet of the present invention exceeds 40 mm, for example, when it is laid under the roof, it may become too thick for the roof and may not be suitable for use. Further, the strength against a load from a direction perpendicular to the convex portion is lowered, and the convex portion may be crushed by the load.

  Furthermore, when the building material sheet of the present invention is used as a ceiling laying material, a wall surface laying material, and an underfloor laying material, and the air permeability is to be secured at the use location, the thickness of the entire building material sheet is less than 5.5 mm. Because of insufficient ventilation capacity and increased ventilation resistance, natural ventilation may hardly be performed. In addition, if the thickness of the entire building material sheet of the present invention exceeds 40 mm, the ventilation capacity increases, but the ventilation resistance almost reaches equilibrium, so it is meaningless to make the thickness larger than this, economically Is also disadvantageous.

  When the building material sheet of the present invention larger than the thickness of the entire building material sheet of the present invention is required depending on the application, the strength is maintained by laminating a plurality of the building material sheets of the present invention as described later. As it is, the height can be increased, and a building material sheet having a desired height can be obtained.

  As a method of forming a convex portion by molding a net-like material, for example, a method of molding the net-like material with an embossing machine using an embossing roll having a predetermined shape, or a pleated molding of a net-like material For example, a method of forming a bowl-shaped convex portion through a machine. The method of providing the convex portion on the net-like object is not limited to the above method, and is not particularly limited as long as it is a known method and can provide the convex portion having a uniform height.

  As the above-mentioned convex portions, the convex portions formed of conical, columnar, polygonal pyramid, and polygonal columnar projections are provided in the form of spindles and / or columnar projections independently, and the cross-sectional shape is The case where the convex part of shapes, such as an inverted V shape, an inverted U shape, a waveform, a semicircle shape, a rectangular shape, and a saw-tooth shape, is provided in a bowl shape continuously is mentioned. By using the three-dimensional molded net provided with the above-mentioned convex part on the net-like object, the building material sheet of the present invention has excellent impact resistance and air permeability.

  When the convex portions are conical, cylindrical, polygonal pyramidal, and polygonal columnar projections, the convex portions are preferably independent of each other, and have substantially the same dimensions. It is more preferable that they are regularly arranged. This is because, for example, when a heavy object such as a slate roof tile is placed on the three-dimensional molded net provided with such a convex portion, the stress tends to be dispersed.

  It is preferable that the convex portions having substantially the same dimensions have a weight shape. When the protrusion is a weight, the filament density in the height direction of the protrusion does not decrease at a high position (that is, as it approaches the tip of the protrusion), so that the strength of the protrusion tip is ensured. Here, the weight refers to a cone, a triangular pyramid, a quadrangular pyramid, a polygonal pyramid, or the like having a shape in which the area decreases and tapers as the height proceeds from the bottom surface. Also included in the weight herein are stars, moons, and the like that have an irregular bottom surface and a tapered shape. Further, the platform weight is also included in the weight here. In the present invention, it is more preferable that the protrusion has a shape of a cone, a truncated cone, a quadrangular pyramid, or a quadrangular pyramid, and most preferably a cone or a quadrangular pyramid. The weight-shaped convex portions are preferably aligned. This is because if there is unevenness in the arrangement of the convex portions, stress concentrates on the portion where the provided convex portions are few, and the three-dimensional molded net may be destroyed.

  In the building material sheet of the present invention, as the shape of the convex portion provided on the net-like object, the convex portion having a cross-sectional shape such as an inverted V shape, an inverted U shape, a corrugated shape, a semicircular shape, a rectangular shape, and a saw blade shape is continuous. And the case where it is provided in a bowl shape is mentioned. In this case, it is preferable that the hook-shaped protrusions extend continuously in one direction, and particularly preferably, the hook-shaped protrusions are formed by folding the net-like object along a straight line extending in one direction. This is the case. As described above, in a building material sheet composed of a three-dimensional molded net in which a ridge-like convex part is formed by folding a net-like object in a straight line extending in one direction, all the folds of mountain folds and valley folds are unidirectional It is particularly preferable that the folds are folded in a straight line and all the folds are substantially parallel. In this case, the mountain fold is an inverted V-shaped fold where the linear fold is highest at the periphery, and the valley fold is a V-shaped fold where the linear fold is lowest at the periphery. And

  When forming a convex part by providing a crease in the net-like object as described above, the cross-sectional shape of the convex part formed by the crease is not particularly limited, but preferably an inverted V shape, an inverted U shape, A shape selected from a corrugated shape, a semicircular shape, a rectangular shape, and a saw blade shape is preferable. This is because it is easy to process the net-like material with these shapes. In addition, by providing the convex part on the net-like object by the crease, when the building material sheet composed of the three-dimensional molded net provided with the convex part is wound up in a roll shape, it is easily wound up. In terms of surface. When providing the net-like object with the above-mentioned cross-sectional shape, which cross-sectional shape the convex part is provided can be arbitrarily selected each time, but preferably one cross-section selected from the above-mentioned cross-section on the entire surface of the net-like object It is preferable that only the shape is repeated, and the most preferable case is when only one shape is repeated, and the heights of the convex portions are substantially the same.

  In the building material sheet of the present invention, when the convex part of the three-dimensionally molded net is a bowl-shaped convex part composed of a plurality of mountain folds and valley folds, the bowl-shaped convex part is provided continuously in a straight line, As described above, it is preferable that the ridge-like convex portions provided in a straight line are provided at equal intervals. When the ridge-shaped convex portions are provided in a straight line at equal intervals and the ridge-shaped convex portions are provided substantially in parallel with each other, the interval between the convex portion vertex and the vertex may be 3 to 100 mm. preferable. In the case of a three-dimensionally molded net provided with a bowl-shaped convex part, the three-dimensional molded net is formed by satisfying this range in the distance between the convex vertex and the convex vertex in the parallel-shaped saddle-shaped convex part and the bowl-shaped convex part. Appropriate air permeability and sufficient compressive strength can be exhibited. If the distance between the ridge-like convex vertex and the ridge-like convex vertex is smaller than 3 mm, the distance between the adjacent creases becomes narrow, the air permeability may be lowered, and the convex portion of the mountain fold portion is not stable, There is a risk of damage by falling to the left or right. If the distance between the ridge-shaped convex vertex and the ridge-shaped convex vertex is wider than 100 mm, the compressive strength in the vicinity of the portion is lowered, which causes damage. It is preferable that the ridge-shaped protrusion vertices and the ridge-shaped protrusion vertices are lined up at equal intervals of 5 to 75 mm, and more preferably at equal intervals of 5 to 50 mm.

  In the building material sheet composed of a three-dimensionally molded net provided with a plurality of convex portions constituted by a plurality of mountain folds and valley folds, the convex portion cross-sectional shape is preferably an inverted V-shape. In order to provide a convex portion so that the cross-sectional shape of the convex portion is inverted V-shaped, the net-like material satisfying the above conditions is subjected to pleating, three-dimensional molding using a mold, or embossing. This is because it can be easily obtained. By obtaining the hook-shaped convex portion by the above method, the hook-shaped convex portion is particularly preferable because the interval between the convex vertex and the convex vertex becomes a constant interval, and the linear hook-shaped convex portions are parallel to each other. The building material sheet of the present invention is obtained. At this time, by using a commercially available thermal processing machine, by applying a crease to the net-like material that satisfies the above conditions and heating, the cross-sectional shape of the convex portion is an inverted V shape, and the ridge-like convex portion is A three-dimensional molded net provided at intervals can be obtained.

  A photo of the building material sheet of the present invention consisting only of a three-dimensionally molded net with projections provided in a bowl shape so that the cross-sectional shape of the projections is an inverted V-shape with respect to a net-like object whose mesh portion is circular. As shown in FIG. In FIG. 8, as indicated by the symbol 15, it can be confirmed that the bowl-shaped convex portions are provided in a straight line shape. The two hook-shaped convex portions are parallel to each other. In the building material sheet in which the convex portions are provided in a bowl shape, the interval between the bowl-like convex portions and the convex portions is represented by symbol 16 in FIG. At this time, it is preferable that the distance between the ridge-shaped protrusions is constant because the strength in the thickness direction is constant in any part of the building material sheet of the present invention.

  In a building material sheet made of a three-dimensionally molded net in which a convex-shaped cross section having an inverted V-shaped cross section is formed, the apex of the convex portion (on the cut surface obtained by cutting the convex portion in a direction perpendicular to the thickness direction) The angle formed by the apex of the mountain fold portion is preferably 15 to 90 °. If the angle of the crease at the apex of the convex portion is smaller than 15 °, the mountain fold portion becomes unstable, and when a load is applied, the mountain fold portion may fall down and the shape may collapse and break. Further, if the angle of the crease at the apex of the convex portion is larger than 90 °, the load cannot be dispersed, and the convex portion may collapse so that the shape collapses and may be damaged. In the building material sheet of the present invention, the angle of the crease at the peak of the convex portion is preferably in the range of 15 to 70 °, and most preferably 20 to 65 °.

  In the photograph of the building material sheet of the present invention, which is composed of only a three-dimensional molded net having convex portions provided so that the cross-sectional shape of the convex portions is inverted V-shaped, with respect to a net-like object having a circular mesh portion. FIG. 9 shows an enlarged photograph of the convex portion. The angle formed by the apex of the convex portion (the apex of the mountain fold portion) is represented by symbol 17 in FIG. When measuring the angle formed by the apex of the convex portion, the angle of this portion is measured using a protractor or the like.

Next, other preferable physical properties of the three-dimensional molded net will be described. The basis weight (unit area mass) of the three-dimensional molded net is measured according to JIS-L1908. The basis weight of the three-dimensional molded net is preferably 100 to 3500 g / m ² . If the basis weight of the three-dimensional molded net is less than 100 g / m ² , the elasticity of the three-dimensional molded net may be insufficient. If it exceeds 3500 g / m ² , the density will increase and the interior of the three-dimensional structure of the three-dimensional molded net will be increased. , The air gap pressure loss may be increased, and the rigidity may be increased, but the elasticity may be decreased.

  The 10 mm compressive stress of the three-dimensional molded net is preferably 300 to 1000N. If the 10 mm compressive stress of the three-dimensional molded net is less than 300 N, the three-dimensional molded net may be crushed when a person gets on or when a strong stress is applied, and a sufficient gap may not be maintained. When the 10 mm compressive stress of the three-dimensional molded net exceeds 1000 N, it is difficult to obtain a cushioning effect due to the elasticity of the three-dimensional molded net, and when a force is applied from the outside, the side to which the force is applied (for example, three-dimensional There is a risk that the object placed on the molding net will be destroyed. More specifically, when the ceiling laying material of the present invention is used so as to be positioned between the field board and the slate roof tile, the roof tile laying work is performed on the ceiling lining material of the present invention. Will be implemented. At that time, if the compressive strength of the three-dimensional molded net is below 300 N, the three-dimensional molded net may be crushed when an operator gets on the slate roof tile. If it exceeds 1000 N, the roof tile may be broken when the worker works on the slate roof tile.

  In addition, the 10 mm compressive stress of a three-dimensional molded net is measured as follows. A solid molded net cut into a 10 cm long and 10 cm wide square is placed on a flat surface, and the sample is compressed in the direction (thickness) using a constant-speed mechanical tester (for example, UCT-1T manufactured by Orientec). Direction), compress the sample at a head speed of 10 mm per minute. At that time, the jig for compressing the sample has a square surface of 20 cm in length and 20 cm in width so that the three-dimensional molded net as the sample is completely covered. Then, the load applied when 10 mm is compressed from the initial load point is measured as 10 mm compressive stress.

  The tensile strength of the three-dimensional molded net is measured according to JIS-L1908. The tensile strength of the three-dimensional molded net is preferably 30 N / 5 cm or more. When the tensile strength of the three-dimensional molded net is less than 30 N / 5 cm, for example, when the construction material sheet of the present invention is laid so as to be inclined with respect to gravity along the inclination of the roof, due to its own weight above, A large load is applied. As a result, the three-dimensional molded net itself may be destroyed, and the structure of the sheet itself may not be maintained.

  The building material sheet of the present invention can be used only with the three-dimensional molded net, but preferably further includes another sheet that does not substantially have a convex portion, and the sheet is bonded to the net. preferable. The building material sheet made up of a three-dimensional molded net is joined and integrated with other sheets, making it easy to handle and making the sheet to be used have various functions. It is because it can exhibit.

  As used herein, other substantially non-convex sheet may have a contact over the entire three-dimensional molded net provided with a plurality of convex portions, such as a nonwoven fabric, a woven fabric, a film, a plate, a board, etc. It has a wide surface. The sheet has some unevenness on its surface (for example, unevenness due to embossing, unevenness due to an adhesive, etc., laminated with a plurality of fibrous materials, and heat-processed and bonded so that the adhesion point becomes dot-like. Even if it has irregularities, it may be used as it is if there is no particular problem in practical use or manufacturing process.

  The form and material of the sheet are not particularly limited. For example, nonwoven fabrics such as air-through nonwoven fabrics, thermal bond nonwoven fabrics, spunbond nonwoven fabrics, melt blown nonwoven fabrics, wet papermaking nonwoven fabrics, hydroentangled nonwoven fabrics, needle punch nonwoven fabrics, and resin bond nonwoven fabrics; woven fabrics such as plain weaves, twill weaves, and satin weaves; A film, a slate board, a plywood board, a gypsum board, etc. can be used as a sheet. In particular, nonwoven fabrics are preferably used, and various nonwoven fabrics made of synthetic fibers are preferred in consideration of the strength and price of the sheet, and melt blown nonwoven fabrics, spunbond nonwoven fabrics, hydroentangled nonwoven fabrics, and laminated nonwoven fabrics in which a plurality of the nonwoven fabrics are laminated are particularly preferred. .

  When using a nonwoven fabric as a sheet, the fiber which comprises a nonwoven fabric is not specifically limited. For example, the fibers constituting the nonwoven fabric may be any of synthetic fibers, natural fibers, and recycled fibers. Synthetic fibers include polyester resins such as polyethylene terephthalate, polybutylene terephthalate, and polytrimethylene terephthalate, olefin resins such as polypropylene, polyethylene, ethylene propylene, and ethylene vinyl alcohol, and amides such as nylon 6, nylon 66, and nylon 12. It may be composed of one or more resins selected from biodegradable resins such as resin, polylactic acid resin, polycaprolactone resin, and polybutylene succinate resin. The recycled fiber is, for example, rayon. Natural fibers are cotton, hemp, wool, glass fiber, metal fiber and pulp. These fibers may be used alone or in combination to form a nonwoven fabric. The fiber constituting the nonwoven fabric may be a composite fiber made of a plurality of resins or a split composite fiber (including ultrafine fibers formed by splitting).

  When a nonwoven fabric is constituted by using a plurality of types of fibers, it may be used by mixing, may be laminated so as to form a layer structure, or a combination of mixing and lamination may be used. . Depending on the application, the form of the sheet is appropriately selected.

When the other sheet is made of fibers (particularly, when it is a non-woven fabric), the basis weight is measured according to JIS-L1906. Preferably the basis weight of the sheet is 15~1000g / m ^2, and more preferably 20 to 200 g / m ^2. When the basis weight of the sheet is less than 15 g / m ² , the strength of the sheet becomes small and breakage is likely to occur. On the other hand, if the basis weight of the sheet exceeds 1000 g / m ² , the building material sheet becomes heavy, which is against the demand for weight reduction.

When the sheet is made of fibers (particularly when it is a nonwoven fabric), the thickness of the sheet is measured according to JIS-L1906. However, the load is 2.94 cN / cm ² . The thickness of the sheet is preferably 0.01 to 50 mm, and more preferably 0.1 to 3 mm. When the thickness of the sheet is less than 0.01 mm, the strength of the sheet is small and breakage tends to occur. When the thickness of the sheet exceeds 50 mm, workability deteriorates in the process of bonding the three-dimensionally molded net and the sheet. Specifically, for example, in the process of reversing or winding up the sheet, there is a possibility that curling will occur on the front surface or the back surface of the sheet.

  When joining a three-dimensional molded net and another sheet, it is not particularly limited as long as it is a method that can be strongly joined, a method of joining with an adhesive or a hot melt resin, a part of a three-dimensional molded net or a sheet is melted and joined. The method is not particularly limited as long as it is a method of firmly joining a three-dimensionally formed net and another sheet, such as a method of joining by thermal bonding, a mechanical method of joining using screws, nails, staples, push pins, or the like. Among them, the method of joining using an adhesive or hot melt resin can be preferably employed because the possibility of making a hole in the sheet is low, and particularly, joining a three-dimensional molded net and a sheet using hot melt resin. The method is preferably the method.

  If the three-dimensional molded net is strongly bonded to the sheet, the bonded portion becomes a fulcrum, and the three-dimensional molded net is not easily crushed overall, and the rigidity of the building material sheet of the present invention using the three-dimensional molded net tends to increase. On the other hand, when the solid molded net is weakly bonded to the sheet, it is considered that when the strong stress is applied, the bonded portion is easily separated and the solid molded net is crushed, thereby reducing the stress. Also, during construction, when laying and laying multiple building material sheets in parallel, peel off the three-dimensional molded net from the sheet so that there is no gap between the three-dimensional molded net and the three-dimensional molded net. It may be necessary to overlap the sheets. In that case, if the adhesive strength between the sheet and the three-dimensional molded net is adjusted to such an extent that it can be easily peeled off, the convenience at the construction site is good. As described above, the characteristics or handleability of the sheet can also be changed by integrating the two by pressure bonding and appropriately adjusting the adhesive strength.

  In the above, in the building material sheet of the present invention, the three-dimensional molded net provided with the convex portion and the sheet were joined using the hot melt resin. The building material sheet of the present invention is not limited to such a form. In some cases, a three-dimensional molded net may be attached to the sheet with an adhesive and integrated. Alternatively, the three-dimensional molded net and the sheet may be integrated by a mechanical joining method (for example, nails, staples, push pins, etc.). Alternatively, three-dimensional molding, such as preparing a sheet and a three-dimensional molded net separately, laying the sheet first on the construction site, laying the three-dimensional molded net on it, and then joining them with an adhesive or molten resin The method for joining the net and other sheets is not particularly limited, and there is no problem as long as they are joined by a known joining method.

  Alternatively, the building material sheet of the present invention may be provided in a form in which a three-dimensional molded net is sandwiched between two sheets. Also in that case, it is preferable to join the three-dimensional molded net and the sheet using a hot-melt resin.

  The sheet to be joined to the three-dimensionally molded net provided with the convex portions may itself exhibit a function. For example, if the sheet has air permeability, air permeability is ensured in all directions of 360 degrees. Alternatively, as a sheet, a functional sheet such as a filter, a heat insulating sheet, a soundproof sheet, a water shielding sheet, a moisture proof sheet, and an electromagnetic wave shielding sheet may be singly or overlaid or bonded to both surfaces of a three-dimensional molded net. Therefore, the building material sheet of the present invention can exhibit various functions in addition to ensuring air permeability.

  The sheet may be a functional sheet having other characteristics in addition to its physical characteristics. Specifically, various functions can be imparted to the sheet by forming a raw material to which an agent exhibiting one or more functions is added into a sheet shape. For example, more specifically, a desired function is added to the sheet to be joined to the building material sheet of the present invention by using a method in which a raw material used for the sheet is mixed with a functional material that exhibits some function to form a sheet. can do. Or after manufacturing a sheet | seat, you may provide a function to a sheet | seat by post-processing of the agent (liquid or powder) which has a desired function, such as spreading, dipping, or adhering.

  As an example of a function that is desired as a building material sheet and can be imparted to the sheet, for example, by adding a hindered amine flame retardant (hereinafter referred to as HALS) or a phosphorus flame retardant, imparting flame retardancy By adding carbon, conductivity can be imparted, and by adding inorganic particles such as calcium carbonate, heat resistance and heat retention can be imparted, and adsorbents such as activated carbon are added. By adding a deodorant and a property of adsorbing harmful substances, insects and small animals (eg, moths) can be kept away by adding insect repellents and repellents such as pyrethroids. it can. Alternatively, weather resistance, water repellency, heat storage, soundproofing, and antifungal properties can be imparted to the sheet by kneading other components at the resin stage or imparting them by post-treatment.

  Functions that are desired as a building material sheet, and the functions such as weather resistance, water repellency, heat storage, soundproofing, and fungicidal properties described above as functions that can be imparted to the sheet are three-dimensional molding provided with convex portions. The function can also be demonstrated by giving it to the net. In particular, if the functional material that needs to exhibit its function is a solid powder, the function can be easily imparted by adding it to the raw material when manufacturing the three-dimensional molded net.

  The building material sheet of the present invention can be used by laying one sheet (single layer), and can also be used by stacking a plurality of building material sheets. This is because the bending strength is improved by stacking the building material sheets. Among the building material sheets of the present invention, when a plurality of ridge-shaped building material sheets are stacked with the convex portions of the three-dimensional molded net, the extending directions of the ridge-shaped convex portions provided on the stacked upper and lower building material sheets are parallel. It is preferable not to become. When the projections provided on the net-like object are bowl-shaped, when the sheets are laminated, if the direction in which the bowl-like projections extend in the upper and lower three-dimensional molded nets are parallel, the reinforcement obtained by lamination The effect may not be obtained. When laminating the building material sheets of the present invention in which the projections provided on the net-like object are bowl-shaped, in the laminated building material sheet, the angle formed by the extending direction of the bowl-shaped projections in the upper and lower three-dimensional molded nets is It is preferably 30 to 90 °, and more preferably, the angle formed by the direction in which the upper and lower hook-shaped convex portions extend is 60 to 90 °.

  The building material sheet of the present invention described above is a ceiling part in a building that can be accessed by humans, such as a detached house, an apartment, an apartment, a building, a warehouse, a factory, a gymnasium, an office, a hall, a hotel, and an underground mall. It is widely used in applications that require air permeability, such as wall parts and under-floor parts. The building material sheet of the present invention can be used for applications typified by the above-mentioned applications, but is preferably used as a ceiling lining material or a wall surface laying material to be laid in the ceiling portion. When used as a ceiling laying material, it is preferably disposed between a roof tile and a roof tile of a building (particularly a detached house) having a cover corresponding to the roof tile or roof tile. Further, when used as a wall laying material, it is disposed between the outer wall material and the inner wall material, and preferably various heat insulating materials (for example, inorganic material heat insulating materials such as glass wool and rock wool, urethane foam, styrene foam, etc.) on the inner wall material. It is preferable to dispose a foamed resin-based or organic fiber-based heat insulating material using cellulosic fibers or wool, and dispose the building material sheet of the present invention from above.

  When the building material sheet according to the present invention is used as a ceiling laying member, when another member is located on the field plate or the field plate, it is laid on the member (for example, a water shielding sheet), By laying the tiles on the top, the roof structure with the air permeability of the ceiling (or attic) is secured. When the building material sheet of the present invention includes a sheet including a non-woven fabric, and the sheet has a water shielding property, the ceiling lining material of the present invention also functions as a water shielding sheet, and the number of steps is substantially reduced. It is possible to complete the roofing work without increasing.

  When using the building material sheet of the present invention as a wall laying material, it is also possible to lay directly on the outside of the inner wall material, but preferably, various heat insulating materials are laid on the outside of the inner wall material as described above, It is preferable to lay the building material sheet of the present invention outside. More preferably, on the outside of the heat insulating material, after laying a sheet having a heat insulating effect (for example, a sheet-like material subjected to aluminum vapor deposition), the building material sheet of the present invention is laid, particularly preferably, In order from the inside of the building to the wall surface structure in which the inner wall material, the heat insulating material, and the sheet having the heat insulating effect are laminated in this order, a sheet having a moisture permeable and waterproof effect is arranged on the outer wall side of the three-dimensional molded net. In addition, when the building material sheet of the present invention in which the moisture-permeable waterproof sheet and the three-dimensional molded net are integrated is laid, the air permeability between the outer wall material and the inner wall material becomes particularly good, and the structure of the structure due to condensation or high temperature and humidity is improved. It is effective for preventing deterioration.

Hereinafter, the present invention will be described in more detail with reference to examples. First, the performance evaluation test method implemented in the present invention will be described.
[Destructive testing]
The building material sheet of the present invention, which is cut into a square of 1 m on each side on a flat cement floor, is a type in which the sheet is bonded to one side of a three-dimensional molded net so that the sheet is on the lower side (that is, Then, a flat roof slate material (manufactured by Kubota Matsushita Electric Industrial Co., Ltd., trade name: Colonial NEO model number KLCC362) was placed thereon. Then, a person with a weight of 100 kg wearing general work safety shoes (made by Midori Safety Co., Ltd., trade name: Ecospec Model No. ES210 28 cm) jumped off the slate material from a height of 50 cm. The total number of jumping points is 5 in the center of each sample and the edge part shifted from the center to the top, bottom, left, and right, and the jumping action is repeated 5 times at each location to break the slate material and the building material sheet. Checked the situation. The evaluation criteria are as follows.
○: The slate is not broken and the building material sheet is not destroyed.
X: Cracking of the slate material and crushing of the building material sheet occurred.
In this test, it was judged that the three-dimensionally molded net was crushed when the height of the convex portion of the three-dimensionally molded net after the destructive test was less than 5 mm, and the evaluation was marked with x.

  The wire diameter of the net-like material and the basis weight, thickness, height of the protrusion, compressive strength, and tensile strength of the three-dimensional molded net provided with the convex portions were measured by the methods described above. The basis weight and thickness of other sheets to be bonded to the three-dimensional molded net are measured by the method described above, and the tensile strength is constant speed tension according to JIS L 1096 6.12.1 A method (strip method). Using a tensile tester, measurement was performed under the conditions of a sample piece width of 5 cm, a gripping interval of 10 cm, and a tensile speed of 30 cm / min (within an error of 2 cm / min).

[Example 1]
As the net-like material, a commercially available net-like sheet made of high-density polyethylene for general civil engineering (netron sheet (netron is a registered trademark) Z-30 manufactured by Mitsui Chemicals, Inc.) was used. The mesh portion of this sheet is composed of regular hexagons with sides of 8 mm. The filament diameter of the filament constituting the net-like object is 1.9 mm. The net-like material was pleated using a pleating machine, and a continuous convex portion was provided on the net-like sheet to obtain a building material sheet of the present invention. At this time, the cross-sectional shape of the convex part is an inverted V shape, and the thickness of the entire building material sheet (symbol 9 in each figure, symbol H in each formula) is 19.1 mm, and the height of the convex part (symbol in each figure) 12. In each formula, the symbol h ₃ ) was 15.3 mm. The distance between the convex portions (symbol 16 in FIG. 8) was 12 mm, and the angle of the inverted V-shaped portion forming the convex portion (symbol 17 in FIG. 9) was 30 °.

[Example 2]
As a net-like material, a commercially available net-like sheet made of high-density polyethylene for general civil engineering (Netron sheet (Netron is a registered trademark) Z-28 manufactured by Mitsui Chemicals, Inc.) was used. The mesh portion of this sheet is composed only of a circular shape having a diameter of 2.55 mm by expanding the intersection of the filaments. The filament diameter of the filament constituting the net-like object is 0.8 mm. The sheet made of the net-like material was pleated using a pleating machine in the same manner as in Example 1 to provide a continuous ridge-shaped convex portion to obtain the building material sheet of the present invention. At this time, the cross-sectional shape of the convex portion is an inverted V shape, the thickness of the entire building material sheet (symbol 9 in each figure, symbol H in each formula) is 16.1 mm, and the height of the convex part (symbol in each figure) 12. In each formula, the symbol h ₃ ) was 14.5 mm. The distance between the convex portions (symbol 16 in FIG. 8) was 25 mm, and the angle of the inverted V-shaped portion forming the convex portion (symbol 17 in FIG. 9) was 65 °.

[Example 3]
As a net-like material, a commercially available net-like sheet made of high-density polyethylene for general civil engineering (a netron sheet according to Mitsui Chemicals, Ltd.'s Netron sheet (Netron is a registered trademark) product number Z-28) was used. . The mesh portion of this sheet is composed only of a circular shape having a diameter of 2.6 mm by expanding the intersection of the filaments. The filament diameter of the filament constituting the net-like object is 1.0 mm. The sheet made of the net-like material was pleated using a pleating machine in the same manner as in Example 1 to provide a continuous ridge-shaped convex portion to obtain the building material sheet of the present invention. At this time, the cross-sectional shape of the convex part is an inverted V shape, and the thickness of the entire building material sheet (symbol 9 in each figure, symbol H in each formula) is 14.0 mm, and the height of the convex part (symbol in each figure) 12. In each formula, the symbol h ₃ ) was 12.0 mm. The distance between the convex portions (symbol 16 in FIG. 8) was 8.6 mm, and the angle of the inverted V-shaped portion forming the convex portion (symbol 17 in FIG. 9) was 35 °.

[Example 4]
A laminated nonwoven fabric in which a polypropylene spunbond nonwoven fabric having a basis weight of 60 g / m ² is bonded to both sides of a polypropylene melt blown nonwoven fabric having a basis weight of 40 g / m ² on the construction surface side of the building material sheet of the present invention shown in Example 1. (The thickness of the laminated nonwoven fabric only (symbol 11 in each figure, symbol h _{2 in} each formula is 0.7 mm)), a commercially available hot-melt resin (EVA: using ethylene vinyl acetate copolymer resin, melting point 90 ° C.) To make Example 4. When the three-dimensional molded net and the laminated nonwoven fabric were bonded together with a hot melt resin, first, the three-dimensional molded net was placed on the laminated nonwoven fabric, and the molten hot melt resin was dropped on the laminated nonwoven fabric to be bonded. At this time, the hot melt resin adheres the three-dimensionally molded net and the laminated nonwoven fabric in a straight line so that the convex portion generated by the pleating process extends in a direction perpendicular to the direction in which the ridges are folded (indicated by symbol 15 in FIG. 8). Then, adhesion with a hot melt resin was performed at intervals of 15 cm. The total thickness of the resulting building material sheet (symbol 9 in each figure, symbol H in each formula) is 19.8 mm, and the height of the convex part (symbol 12 in each figure, symbol h _{3 in} each formula) is 15. It was 3 mm. The distance between the convex portions (symbol 16 in FIG. 8) was 12 mm, and the angle of the inverted V-shaped portion forming the convex portion (symbol 17 in FIG. 9) was 30 °.

[Example 5]
The same laminated nonwoven fabric as the laminated nonwoven fabric used in Example 4 is bonded to one side of the building material sheet of the present invention shown in Example 2 with a commercially available hot melt resin as in Example 4, and Example 5 and did. The method of laminating was the same as in Example 4. First, a three-dimensionally molded net was placed on the laminated nonwoven fabric, and the molten hot melt resin was dropped thereon to allow adhesion. For the hot melt resin, the solid molded net and the laminated nonwoven fabric were bonded in a straight line so as to be perpendicular to the extending direction of the convex portions generated by the pleating process, and the hot melt resin was bonded at intervals of 15 cm. The total thickness of the obtained building material sheet (symbol 9 in each figure, symbol H in each formula) is 16.8 mm, and the height of the convex part (symbol 12 in each figure, symbol h _{3 in} each formula) is 14. It was 5 mm. The distance between the convex portions (symbol 16 in FIG. 8) was 25 mm, and the angle of the inverted V-shaped portion forming the convex portion (symbol 17 in FIG. 9) was 65 °.

[Example 6]
The same laminated nonwoven fabric as the laminated nonwoven fabric used in Examples 4 and 5 was bonded to one side of the building material sheet of the present invention shown in Example 3 with a commercially available hot melt resin in the same manner as in Example 4. Example 6 was adopted. The method of laminating was the same as in Example 4. First, a three-dimensionally molded net was placed on the laminated nonwoven fabric, and the molten hot melt resin was dropped thereon to allow adhesion. For the hot melt resin, the solid molded net and the laminated nonwoven fabric were bonded in a straight line so as to be perpendicular to the extending direction of the convex portions generated by the pleating process, and the hot melt resin was bonded at intervals of 15 cm. The total thickness of the obtained building material sheet (symbol 9 in each figure, symbol H in each formula) is 14.7 mm, and the height of the convex part (symbol 12 in each figure, symbol h _{3 in} each formula) is 12. It was 0 mm. The distance between the convex portions (symbol 16 in FIG. 8) was 8.6 mm, and the angle of the inverted V-shaped portion forming the convex portion (symbol 17 in FIG. 9) was 35 °.

[Comparative Example 1]
A three-layer structure of polypropylene nonwoven fabric (spunbond nonwoven fabric / meltblown nonwoven fabric / spunbond nonwoven fabric) [Thickness of each figure] A commercial laying material (manufactured by BWK (Germany), trade name Diffex Convec-Blech), in which the middle symbol 11 and the symbol h _{2 in} each formula are 0.8 mm, was prepared. In this laying material, the three-dimensional network was made of polypropylene, and the basis weight was 54.6 g / m ² . The convex portion is formed with a pleated projection extending in the longitudinal direction over the entire three-dimensional network. In this sheet, the thickness of the entire sheet (symbol 9 in each figure, symbol H in each formula) is 6.0 mm, and the height of the convex part (symbol 12 in each figure, symbol h _{3 in} each formula) is 4.4 mm. Met.

  Table 1 shows the physical properties of Examples 1 to 6 and Comparative Example 1.

In the destructive test, the ceiling laying materials of Examples 1 to 6 have an appropriate angle of the convex section when a large stress is instantaneously applied. There was no breakage of the strip. In addition, since the filaments constituting the three-dimensional molded net were not regularly arranged but regularly arranged, high impact absorption was exhibited no matter where the destructive test was conducted.
Moreover, when Examples 1-3 and Examples 4-6 are compared, it turns out that the compressive strength is higher in Examples 4-6 in which the laminated nonwoven fabric is stuck on one side. This is because the hot melt resin used when integrating the three-dimensional molded net laminated nonwoven fabric bonds and solidifies the three-dimensional molded net and the sheet-like material, so that the convex part of the three-dimensional molded net is against the pressure from above. This is thought to be due to the effect of preventing deformation. Therefore, in the building material sheet of the present invention, stacking and integrating other sheets with the three-dimensional molded net is a construction that demonstrates the function of the used sheet by bonding the functional sheet to the three-dimensional molded net. It can be seen that it is preferable because the strength against compression in the thickness direction can be easily increased as well as the material sheet.
In the ceiling laying material of Comparative Example 1, the slate material was broken during a destructive test at some locations. The portion where the breakage occurred was a portion where the density of the line was sparse in the solid network in which the line was randomly arranged. For this reason, it is considered that the strength varies depending on the location, and the slate material is broken.

  Since the building material sheet of the present invention can ensure good air permeability, it can be used as a base material for general buildings such as ceilings, roofs, wall surfaces and floors. The ceiling lining material, wall surface laying material, and floor laying material made of the building material sheet of the present invention ensure good air permeability in the back of the ceiling (or under the roof), the inside of the wall surface, and under the floor in a house or building in general. However, it can be suitably used to prevent the occurrence of condensation.

It is a photograph of the net-like object whose mesh part is a parallelepiped which can be used for the building material sheet of the present invention. It is a photograph of the net-like thing whose mesh part is a parallelogram (diamond) which can be used for the building material sheet of the present invention. 2 is a photograph of a net-like object having a substantially circular mesh portion that can be used in the building material sheet of the present invention. 2 is a photograph of a net-like object having a substantially circular mesh portion that can be used in the building material sheet of the present invention. It is the schematic of the building material sheet | seat of this invention which laminated | stacked another sheet | seat on the upper and lower sides. FIG. 2 is a schematic view of the building material sheet of the present invention in which another sheet is laminated on the side in contact with the construction surface. It is the schematic of the building material sheet | seat of this invention which consists only of a solid molded net. It is the photograph which image | photographed the solid molded net provided with the convex part which comprises the building material sheet | seat of this invention from diagonally upward. It is the photograph which expanded the convex part provided in the solid molding net.

Explanation of symbols

1: Building material sheet of the present invention 2: Solid molded net 3: Net-like material in which the mesh is regularly repeated before three-dimensional molding 4: Mesh 5: Mesh part formed by filament 6: Solid Other sheets laminated on the upper side of the molding net 7: Other sheets laminated on the lower side of the three-dimensional molding net 8: Construction surface 9: Total thickness of the building material sheet 10: Others laminated on the upper side of the three-dimensional molding net 11: Thickness of other sheets laminated on the lower side of the solid molding net 12: Height of the convex portion provided on the net-like material 13: Thickness of the solid molding net in the convex portion 14: Solid in the concave portion Molded Net Thickness 15: Gutter-shaped convex part having a cross-sectional shape of an inverted V shape and extending linearly 16: Spacing between convex parts 17: Angle of convex part vertex

Claims (8)

A net-like object in which a mesh formed by a line having a thickness of 0.1 to 10 mm is regularly repeated, and the mesh shape in the net-like object is a triangle, a parallelogram, or a parallelogram , At least one shape selected from circular, and the area of each mesh portion is substantially the same,
The net-like product is molded, and includes a three-dimensional molded net including a plurality of convex portions having a height of 5 mm or more ,
A building material sheet in which the three-dimensional molded net has a 10 mm compressive stress of 300 to 1000 N. The convex portion is molded into a bowl shape that is continuous in one direction, and the sectional shape of the convex portion is at least selected from an inverted V shape, an inverted U shape, a waveform, a semicircular shape, a rectangular shape, and a saw blade shape. The building material sheet according to claim 1 , which has a single shape. The building material sheet according to claim 1 or 2 , wherein another sheet-like material is bonded to one side or both sides of the net-like material. Ceiling laying material consisting of building materials sheet according to any one of claims 1 to 3. The roof structure by which the ceiling laying material of Claim 4 is arrange | positioned between a field plate and a tile. Wall laying material consisting of building materials sheet according to any one of claims 1 to 3. A wall surface ventilation structure using at least one layer of the wall surface laying material according to claim 6 between the outer wall material and the inner wall material. An underfloor laying material comprising the building material sheet according to any one of claims 1 to 3 .