JP2018183972A - Thermal-insulating and moisture-permeable waterproof sheet and laminate for building material using the same - Google Patents

Abstract

The present invention provides a heat-insulating and moisture-permeable waterproof sheet having good waterproof properties, moisture-permeable properties and heat-insulating properties as a functional sheet used for the walls of houses and roofs. A reinforcing sheet, a base sheet, and a heat ray reflective layer are provided in this order, the reinforcing sheet is a fabric, and the concealment ratio of the base sheet by the heat ray reflective layer is from 50 to 90. It is preferable that the heat ray reflective layer 3 is a fiber orthogonal nonwoven fabric in which the heat-insulating and moisture-permeable waterproof sheet 10 containing the metal particles and the resin component contains the polyolefin resin. The base sheet 2 has a concave portion and a convex portion on the surface opposite to the reinforcing sheet 1, and has a convex portion, and the convex portion and the heat ray reflective layer 3 have a reflectance of 30% or more, and a heat-insulating and moisture-permeable waterproof sheet 10. [Selection] Figure 1

Description

  The present disclosure relates to a heat insulating moisture permeable waterproof sheet and a laminate for building materials using the same.

  For the walls of houses and roofs, functional sheets that have waterproof properties to prevent water from entering from outside, moisture permeability that allows vapor to penetrate from the inside, and heat shielding properties that block heat rays from the outside are used. It is done.

  Patent Document 1 discloses a house wrap material in which a metal vapor-deposited layer and a protective layer are sequentially laminated on one surface of a moisture-permeable and waterproof film, and a cloth is provided on the other surface of the film. Patent Document 2 discloses a waterproof sheet in which a moisture-permeable waterproof sheet is used as a base material, and a radiant heat reflection layer in which an aluminum foil and a plastic film are bonded to each other to provide a through hole is integrated. Furthermore, Patent Document 3 discloses a sheet having a low melting point resin coated on the back surface of an aluminum simple substance or an aluminum vapor-deposited film and a hole, and a non-woven cloth simple substance or a thermal barrier moisture permeable cloth laminated with a resin split cloth. A composite sheet for building materials is disclosed.

Japanese Patent No. 5679941 JP-A-2005-59506 Japanese Patent No. 3622152

  Further improvement in waterproofness, moisture permeability, and heat shielding properties is required as a functional sheet used for the walls of houses and roofs. This indication is made in view of the above-mentioned situation, and it aims at providing the heat insulation moisture permeability waterproof sheet which has favorable waterproofness, moisture permeability, and heat insulation.

  In the present disclosure, a reinforcing sheet, a base material sheet, and a heat ray reflective layer are provided in this order, the reinforcing sheet is a fabric, and a concealment ratio of the base material sheet by the heat ray reflective layer is 50% or more and 90%. The heat ray reflective layer provides a heat-insulating and moisture-permeable waterproof sheet containing metal particles and a resin component.

  Moreover, in this indication, the laminated body for building materials which has a wooden base material and the heat insulation moisture-permeable waterproof sheet mentioned above of the one surface side of the said wooden base material is provided.

  The heat-insulating and moisture-permeable waterproof sheet according to the present disclosure has an effect of having good waterproof properties, moisture-permeable properties, and heat-insulating properties.

It is the schematic perspective view and schematic sectional drawing which show an example of the heat insulation moisture-permeable waterproof sheet of this indication. It is a schematic diagram for demonstrating the heat insulation moisture-permeable waterproof sheet of this indication. It is a general | schematic process figure which shows an example of the manufacturing method of the heat insulation moisture-permeable waterproof sheet of this indication. It is a photograph of the section of the substrate sheet in this indication. It is a schematic perspective view which shows the other example of the heat insulation moisture-permeable waterproof sheet of this indication. It is a schematic process drawing which shows the manufacturing method of the heat-insulation moisture-permeable waterproof sheet of Comparative Examples 1 and 2. It is a schematic process drawing which shows the manufacturing method of the heat-insulation moisture-permeable waterproof sheet of the comparative example 3. It is a schematic sectional drawing which shows the heat insulation moisture-permeable waterproof sheet of the comparative example 4. It is a schematic perspective view which shows an example of the laminated body for building materials of this indication. It is a schematic perspective view which shows the other example of the laminated body for building materials of this indication. It is a schematic perspective view which shows the other example of the laminated body for building materials of this indication. It is a schematic perspective view which shows the other example of the laminated body for building materials of this indication. It is explanatory drawing for demonstrating the laminated body for building materials of this indication. It is explanatory drawing for demonstrating the laminated body for building materials of this indication. It is explanatory drawing for demonstrating the laminated body for building materials of this indication. It is explanatory drawing for demonstrating the laminated body for building materials of this indication.

  Conventionally, as a functional sheet used for a wall of a house or a base of a roof, for example, an asphalt waterproof sheet and a rubber asphalt waterproof sheet are known. While these waterproof sheets have desired waterproof properties, there is a problem that moisture permeability is low. When the moisture permeability of the waterproof sheet is low, it becomes difficult to sufficiently release water vapor generated in the house to the outside of the house. Therefore, when the moisture permeability of the waterproof sheet is low, it may cause dew condensation in the house, mold growth, and corrosion inside the house. Moreover, the waterproof sheet mentioned above does not provide thermal insulation.

  The house wrap material disclosed in Patent Document 1 has a metal vapor deposition layer and a protective layer. A metal vapor deposition layer has a subject in terms of cost from the manufacturing process. Moreover, a manufacturing process increases by having a protective layer, and the further subject arises in terms of cost. The waterproof sheet and the thermal barrier / breathable building material composite sheet disclosed in Patent Document 2 and Patent Document 3 need to form through holes in an aluminum foil or an aluminum vapor-deposited film, the manufacturing process is complicated, and the cost is also low. Challenges arise.

  On the other hand, the heat-insulating and moisture-permeable waterproof sheet of the present disclosure can obtain heat shielding properties by having a heat ray reflective layer. Moreover, the heat ray reflective layer in this indication contains a metal particle and a resin component. Therefore, compared with the conventional functional sheet using a metal vapor deposition layer, the increase in the manufacturing cost can be suppressed. Moreover, since the heat ray reflective layer is in a state where the metal particles are dispersed in the resin component, a protective layer for suppressing oxidation of the metal vapor deposition layer or the metal foil is not required. Therefore, an increase in manufacturing steps and an increase in cost due to the provision of the protective layer can be suppressed. Furthermore, since the heat-insulating and moisture-permeable waterproof sheet of the present disclosure uses a fabric as the reinforcing sheet, it can be a reinforcing sheet having a desired gap. In addition, since the reinforcing sheet is a fabric, the base sheet can follow the reinforcing sheet by thermocompression bonding the base sheet and the reinforcing sheet. By doing so, the recessed part and convex part corresponding to the uneven structure of the surface of a fabric can be formed in the surface of a base material sheet. In the present disclosure, a heat ray reflective layer having a desired concealment rate can be easily formed because the surface of the base sheet has concave portions and convex portions.

A. Heat-insulating and breathable waterproof sheet Hereinafter, the heat-insulating and moisture-permeable waterproof sheet of the present disclosure will be described. In the present disclosure, “sheet” and “film” may be used synonymously.

  Fig.1 (a) is a schematic perspective view which illustrates the heat insulation moisture-permeable waterproof sheet of this indication, and FIG.1 (b) is the sectional view on the AA line of Fig.1 (a). As shown to Fig.1 (a), (b), the heat insulation moisture-permeable waterproof sheet 10 has the reinforcement sheet 1, the base material sheet 2, and the heat ray reflective layer 3 in this order. Moreover, the heat ray reflective layer 3 contains metal particles and a resin component. Furthermore, the concealment rate by the heat ray reflective layer 3 of the base material sheet 2 is 50% or more and 90% or less, and the reinforcing sheet 1 is a fabric.

  Hereinafter, the heat insulating moisture-permeable waterproof sheet of the present disclosure will be described for each configuration.

1. Heat ray reflective layer The heat ray reflective layer in the present disclosure contains metal particles and a resin component. Moreover, the concealment rate of the heat ray reflective layer in the base material sheet is 50% or more and 90% or less.

  The heat ray reflective layer in the present disclosure contains metal particles and a resin component.

(1) Metal particle The metal particle contained in a heat ray reflective layer points out what is called a particulate metal material. The metal material used for the metal particles is preferably a material having a heat shielding property that reflects heat rays. Specific examples include aluminum, nickel, stainless steel, silver, chromium, and alloys using these metals. In the present disclosure, it is more preferable to use aluminum from the viewpoint of excellent heat shielding and economical efficiency.

  The metal particles are particulate. Here, the particulate form includes, for example, shapes such as a spherical shape, a flat shape, an indefinite shape, a star shape, and a confetti shape. The average particle diameter of the metal particles is preferably in the range of 1 μm to 20 μm, for example, and more preferably in the range of 5 μm to 15 μm. When the average particle diameter of the metal particles is within the above range, good heat shielding properties can be exhibited. In addition, since the average particle diameter of a metal particle can be measured by a general method, description here is abbreviate | omitted.

  Content of the metal particle contained in a heat ray reflective layer should just be a grade which can obtain desired heat-shielding property, and can be suitably adjusted according to the use etc. of a heat-insulation moisture-permeable waterproof sheet. The specific content (solid content concentration) of the metal particles contained in the heat ray reflective layer is preferably in the range of, for example, 10% by mass to 70% by mass, and more preferably 30% by mass to 50% by mass. It is preferable to be within the range.

(2) Resin Component The resin component constituting the heat ray reflective layer is not particularly limited as long as it is a material that can constitute the heat ray reflective layer having a desired heat shielding property. Specific examples of the resin component include a polyurethane resin, an acrylic resin, and a polyester resin.

  A polyurethane-based resin is preferable because it has a strong surface strength as a thin film. Examples of the polyurethane resin include polyester polyurethane, polyether polyurethane, polyether polyester polyurethane, polycarbonate polyurethane, polycaprolactam polyurethane, and mixtures thereof.

  The acrylic resin is obtained by polymerization of a polymerizable unsaturated monomer (generally, radical polymerization). Examples of the monomer having an unsaturated double bond include (meth) acrylic acid alkyl esters such as lauryl, methoxyethyl (meth) acrylate, methoxybutyl (meth) acrylate, and ethoxybutyl (meth) acrylate; (Meth) acrylic acid esters having a hydroxyl group such as 2-hydroxyethyl (meth) acrylate and hydroxypropyl (meth) acrylate; unsaturated monomers having an epoxy group such as glycidyl (meth) acrylate and allyl glycidyl ether; acrylamide N, N-methylol (meth) acrylamide, N-butoxymethyl (meth) acrylamide, N-methylacrylamide, N, N-dimethylacrylamide, N-isopropylacrylamide and other unsaturated monomers having an amide group; N, N- Dimethylaminoethyl meta (Meth) acrylic acid having a tertiary amino group such as relate, N, N-diethylaminoethyl methacrylate, N, N-dimethylaminopropyl methacrylate; nitrogen-containing compounds such as N-vinylpyrrolidone, N-vinylimidazole and N-vinylcarbazole Unsaturated monomer: Cyclopentyl (meth) acrylate, cyclohexyl (meth) acrylate, cycloaliphatic (meth) acrylate such as isobornyl (meth) acrylate, styrene, α-methylstyrene, benzyl acrylate, benzyl methacrylate, phenoxyethyl acrylate, etc. Aromatic unsaturated monomers; silicon-containing unsaturated monomers such as vinyltriethoxysilane and γ-methacryloyloxypropyltrimethoxysilane; octafluoropentyl (meth) acrylate, perfluorocyclohexyl Fluorine-containing unsaturated monomers such as (meth) acrylates, monomers having one unsaturated group such as unsaturated monomers blocked with isocyanate groups, and divinylbenzene, polyethylene glycol di (meth) acrylate And bifunctional unsaturated monomers. Examples of the unsaturated monomer having no active hydrogen include unsaturated monomers that do not contain a carboxyl group, a hydroxyl group, a methylol group, a silanol group, an amide group, a primary or secondary amino group, among the unsaturated monomers. A monomer is mentioned. In addition, examples of the monomer having three or more unsaturated double bonds include trimethylolpropane triacrylate, trimethylol triacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, and the like.

  In the present disclosure, the resin component may contain a curing agent as necessary. Examples of the curing agent include aliphatic, alicyclic or aromatic polyisocyanate compounds, and other polyisocyanate compounds (for example, tolylene diisocyanate, hexamethylene diisocyanate, triphenylmethane triisocyanate, diphenylmethane diisocyanate, o-toluidine). Diisocyanate, isophorone diisocyanate, 1,3,5-triisocyanate methylbenzene, lysine ester triisocyanate), multimers derived from the above polyisocyanate compounds (for example, dimers and trimers), the above polyisocyanate compounds and 3, Polyisocyanate obtained by reaction with a polyol compound such as 3,3-trimethylolpropane can be mentioned.

  The resin component may contain a polyurethane resin as a main component, may contain an acrylic resin as a main component, or may contain a polyester resin as a main component. It is preferable that the ratio of these resin is 90 mass% or more with respect to the whole resin component, for example. Examples of resin components other than these resins include cellulose derivatives such as nitrocellulose, cellulose propionate, cellulose acetate butyrate, cellulose diacetate, and cellulose triacetate, alkyd resins, acrylonitrile-butadiene copolymers, polyvinyl butyral, and styrene. -A butadiene copolymer, a polyester resin, an epoxy resin, etc. are mentioned.

(3) Additive The heat ray reflective layer in the present disclosure may contain an additive as necessary in addition to the metal particles and the resin component described above. Examples of the additive include a light stabilizer, an antioxidant, an ultraviolet absorber, a plasticizer, and a dispersant.

(4) Heat ray reflective layer In this indication, the concealment rate of the heat ray reflective layer in a substrate sheet is 50% or more and 90% or less. Here, “the concealment rate of the heat ray reflective layer in the base sheet” means that the surface of the base sheet is covered by the heat ray reflective layer when the heat-insulating and moisture-permeable waterproof sheet of the present disclosure is viewed from the surface on the heat ray reflective layer side. The rate of concealment.

  In this indication, the concealment rate of the heat ray reflective layer in a substrate sheet is 50% or more and 90% or less. Especially, it is preferable that the concealment rate of the heat ray reflective layer in a base material sheet is 60% or more and 80% or less. For example, as shown in FIG. 2, the heat-insulating and moisture-permeable waterproof sheet according to the present disclosure has a region where the heat ray reflective layer 3 is formed, thereby obtaining a function of reflecting heat rays, that is, heat shielding properties. Therefore, favorable heat-shielding property can be acquired because the concealment rate of a heat ray reflective layer has the said minimum. On the other hand, as shown in FIG. 2, for example, the heat-insulating and moisture-permeable waterproof sheet of the present disclosure is in a region where the heat-ray reflecting layer 3 is not formed, that is, on the surface of the heat-insulating and moisture-permeable waterproof sheet 10 on the heat-ray reflecting layer 3 side. And by having the area | region which the base material sheet 2 exposed, the function which permeate | transmits water vapor | steam and air, ie, moisture permeability, can be acquired. Therefore, favorable moisture permeability can be obtained because the concealment rate of the heat ray reflective layer has the above upper limit.

  The concealment rate of the heat ray reflective layer in the substrate sheet can be measured using, for example, the following method. That is, first, a 50 mm square is drawn on the heat-insulating and moisture-permeable waterproof sheet, and then converted into a digital file using a multifunction machine “ApeosPort-V C5575” manufactured by Fuji Xerox Co., Ltd. The conditions at this time are: color mode: 256 gray scales, document image quality: text, reading density: normal, sharpness: normal, reading resolution: 600 dpi, and output format: JPEG. Next, using the image analysis and measurement system “WinROOF Ver7.4.5” manufactured by Mitani Corporation, the JPEG file converted into a digital file is read, and a 50 mm square is specified by the rectangular ROI. Threshold binarization (W) is selected, and 160 and 240 are input as threshold values and executed. Thereby, in the heat insulation moisture-permeable waterproof sheet, the heat ray reflective layer portion is displayed in green. Next, when measurement (M) and total area / number (Q) are selected and the area ratio of the measurement item is checked and executed, the area ratio of the heat ray reflective layer, that is, the concealment ratio of the heat ray reflective layer in the substrate sheet Can be calculated.

  In the present disclosure, examples of a method for forming the heat ray reflective layer to have a predetermined concealment rate include the following methods. First, the manufacturing method of the heat insulation moisture permeability waterproof sheet of this indication is explained. Drawing 3 (a)-(c) is an outline process figure showing an example of a manufacturing method of a thermal insulation moisture-permeable waterproof sheet which manufactures a thermal insulation moisture-permeable waterproof sheet of this indication. In the present disclosure, the reinforcing sheet 1 and the base sheet 2 are thermocompression bonded as shown in FIG. Thereby, as shown in FIG.3 (b), the base material sheet 2 follows the shape of the reinforcement sheet 1 which is a fabric, and the surface of the base material sheet 2 becomes a concavo-convex structure. Subsequently, the ink which comprises the heat ray reflective layer 3 containing a metal particle and a resin component is apply | coated to the surface of the base material sheet 2 which has an uneven structure. Then, as shown in FIG.3 (c), the said ink can be selectively apply | coated to the convex part of the surface of the base material sheet 2, and the heat ray reflective layer 3 is applied to the convex part of the surface of the base material sheet 2. FIG. Can be formed. In the present disclosure, in this way, the region where the heat ray reflective layer 3 is arranged and the region where the heat ray reflective layer 3 is not arranged and the substrate sheet 2 is exposed are formed on the substrate sheet 2. Can do. In general, the former region corresponds to a convex portion on the surface of the base sheet, and the latter region corresponds to a concave portion on the surface of the base sheet. The concealment ratio of the heat ray reflective layer is adjusted by adjusting the kind of the reinforcing sheet as the fabric, the roughness and depth of the plate used when the heat ray reflective layer is formed by a coating method, the viscosity of the ink, and the like. Can be done.

  Therefore, in the present disclosure, it is usually preferable that the base sheet described later has a concave portion and a convex portion on the surface opposite to the reinforcing sheet, and the convex portion and the heat ray reflective layer overlap in plan view. .

  Here, in the present disclosure, the “concavo-convex structure”, “concave portion”, and “convex portion” on the surface of the base sheet or the base sheet side of the laminate are formed corresponding to the concavo-convex structure on the surface of the reinforcing sheet. Refers to the structure. The difference in height between the adjacent concave and convex portions is such that the ink constituting the heat ray reflective layer can be selectively applied onto the convex portions when the heat ray reflective layer is formed by a coating method. It is preferable that Specifically, the height difference between the adjacent concave and convex portions is preferably 10 μm or more, and more preferably 30 μm or more. Note that the difference in height between adjacent concave and convex portions refers to, for example, the distance indicated by the symbol t in FIG.

  Further, in the present disclosure, “the convex portion and the heat ray reflective layer overlap in plan view” means that the surface of the base sheet is observed when the heat insulating moisture permeable waterproof sheet of the present disclosure is observed from the surface on the heat ray reflective layer side. The convex part and the heat ray reflective layer are positioned so as to overlap at least. In the present disclosure, it is preferable that the convex portion and the heat ray reflective layer overlap in plan view, and the ratio of the convex portion region overlapping in plan view with the heat ray reflective layer is relative to all the convex portion regions of the base sheet. The ratio may be such that the heat ray reflective layer can achieve a predetermined concealment rate. For example, it is preferably 90% or more, and more preferably 95% or more. Furthermore, in this indication, you may have the area | region where a recessed part and a heat ray reflective layer do not overlap on planar view.

  The heat ray reflective layer in the present disclosure is a member that imparts heat shielding properties. The heat shielding property in the present disclosure refers to the performance of reflecting and blocking heat rays. Further, the “heat ray” here refers to infrared rays, specifically, electromagnetic waves having a wavelength of 2 μm or more and 20 μm or less.

  The heat shielding property of the heat-insulating and moisture-permeable waterproof sheet having such a heat ray reflective layer will be described in the section of “4.

  The thickness of the heat ray reflective layer in the present disclosure is preferably such that the heat ray reflective layer can exhibit a desired heat shielding property, and can be appropriately adjusted according to the material of the heat ray reflective layer. The specific thickness of the heat ray reflective layer is, for example, preferably from 0.5 μm to 5 μm, and more preferably from 1 μm to 2 μm. In addition, when forming the heat ray reflective layer in this indication by the apply | coating method, the thickness of a heat ray reflective layer can be adjusted with the coating amount of the ink which comprises a heat ray reflective layer.

2. Reinforcing sheet The reinforcing sheet in the present disclosure is a fabric.

  Examples of the reinforcing sheet that is a fabric include a nonwoven fabric and a woven fabric. These materials usually have moisture permeability and breathability. On the other hand, these materials may or may not have water shielding properties. If the diameter of the voids in the reinforcing sheet is large, it is usually impossible to obtain water shielding properties, but water shielding properties can also be imparted by performing a water shielding treatment, for example. In addition, when these materials are used, a gap derived from irregularities such as a nonwoven fabric is generated between the base sheet and the ground, so that water easily penetrates.

  The material of the nonwoven fabric or woven fabric is preferably a polyolefin resin, an ester resin or an amide resin among thermoplastic resins. In addition, as the nonwoven fabric, for example, fiber orthogonal nonwoven fabric, long fiber nonwoven fabric, short fiber nonwoven fabric, wet nonwoven fabric, dry nonwoven fabric, airlaid nonwoven fabric, card nonwoven fabric, parallel nonwoven fabric, cloth nonwoven fabric, random nonwoven fabric, spunbond nonwoven fabric, meltblown nonwoven fabric , Flash spinning nonwoven fabric, chemical bond nonwoven fabric, hydroentangled nonwoven fabric, needle punch nonwoven fabric, stitch bond nonwoven fabric, thermal bond nonwoven fabric, burst fiber nonwoven fabric, tow spread nonwoven fabric, split fiber nonwoven fabric, composite nonwoven fabric, laminated nonwoven fabric, coated nonwoven fabric, laminated nonwoven fabric, etc. Is mentioned.

The fiber-orthogonal nonwoven fabric is a nonwoven fabric obtained by laminating two or more stretched films so that the stretching directions are perpendicular to each other, and examples thereof include Warif (registered trademark) manufactured by JX ANCI Corporation. The basis weight of the fiber orthogonal nonwoven fabric is preferably 5 g / m ² or more and 100 g / m ² or less, more preferably 20 g / m ² or more and 50 g / m ² or less. When the basis weight of the fiber orthogonal nonwoven fabric has the above lower limit, a reinforcing sheet having sufficient strength can be obtained, and by having the above upper limit, a heat insulating moisture permeable waterproof sheet having sufficient moisture permeability can be obtained. Can do. Moreover, it is preferable that the fiber diameters of a long-fiber nonwoven fabric are 3 micrometers or more and 20 micrometers or less, for example. On the other hand, the fiber diameter of the short fiber nonwoven fabric is preferably less than 3 μm, for example.

  On the other hand, a porous reinforcement sheet is mentioned as another example of a reinforcement sheet. The porous reinforcing sheet usually has moisture permeability, air permeability, and water impermeability.

  The reinforcing sheet preferably contains a resin. The resin may be a thermoplastic resin or a thermosetting resin, but the former is preferred. In particular, the resin used for the reinforcing sheet is preferably a polyolefin resin. That is, in the present disclosure, the reinforcing sheet is preferably a fiber orthogonal nonwoven fabric containing a polyolefin resin. This is because the reinforcing sheet contains a polyolefin-based resin, which is excellent in heat resistance, water resistance, chemical resistance, and cost. Specific examples of the polyolefin-based resin include, for example, a polyethylene-based resin and a polypropylene-based resin, and among them, a polyethylene-based resin is preferable.

  Examples of the polyethylene resin include high density polyethylene (HDPE), linear low density polyethylene (LLDPE), low density polyethylene (LDPE), and very low density polyethylene (VLDPE). These may be used alone or in combination of two or more. Among these, high-density polyethylene and linear low-density polyethylene are preferable, and high-density polyethylene is more preferable. This is because high-density polyethylene is excellent in weather resistance and tensile strength, and a sheet containing high-density polyethylene does not sag even when it is a long roll, and appearance defects due to whitening are unlikely to occur during bending. In particular, when the resin component of the reinforcing sheet is only a polyethylene resin, it is preferable to use at least one of high-density polyethylene and linear low-density polyethylene.

  Further, the polyethylene resin has a melt flow rate (temperature 230 ° C., load 2.16 kg) measured in accordance with JIS K 7210 of 0.1 g / 10 min or more and 4.0 g / 10 min or less. Preferably, it is 0.4 g / 10 min or more and 2.0 g / 10 min or less.

  As the thermoplastic resin, an acrylic resin, a styrene resin, a vinyl fluoride resin, an amide resin, an ester resin, or the like can be used. Examples of the acrylic resin include polymethyl acrylate, polymethyl methacrylate, and ethylene-ethyl acrylate copolymer. Examples of the styrene resin include butadiene-styrene copolymer, acrylonitrile-styrene copolymer, polystyrene, styrene-butadiene-styrene copolymer, styrene-isoprene-styrene copolymer, styrene-acrylic acid copolymer, and the like. Is mentioned. Examples of the vinyl fluoride resin include vinyl chloride resins, polyvinyl fluoride, and polyvinylidene fluoride. Examples of the amide resin include 6-nylon, 6,6-nylon, 12-nylon, and the like. Examples of the ester resin include polyethylene terephthalate and polyprebutylene terephthalate. In addition, as the thermoplastic resin, polycarbonate, polyphenylene oxide, polyacetal, polyphenylene sulfide, silicone resin, thermoplastic urethane resin, polyether ether ketone, polyether imide, thermoplastic elastomer, or the like may be used.

  The thermoplastic resin contained in the reinforcing sheet and the thermoplastic resin contained in the base sheet described later may be the same or different.

  Although the thickness of a reinforcement sheet is not specifically limited, For example, they are 5 micrometers or more and 150 micrometers or less, and it is preferable that they are 50 micrometers or more and 100 micrometers or less.

  The reinforcing sheet in the present disclosure may have a single layer structure or a multilayer structure.

  In the heat-insulating and moisture-permeable waterproof sheet, another layer may be provided between the reinforcing sheet and the base sheet, or the other layer may not be provided and may be in contact. The latter is preferred in the present disclosure. Examples of the method for laminating the reinforcing sheet and the base sheet include dry lamination, hot melt, wet lamination, thermal lamination, and the like, and thermal lamination without using an adhesive is preferable. When the reinforcing sheet and the base sheet are laminated by thermal lamination, a part of the resin material constituting the base sheet is melted and bonded to the reinforcing sheet that is a fabric. Therefore, for example, as shown in FIGS. 3A and 3B, the base sheet 2 follows the concavo-convex structure on the surface of the reinforcing sheet 1 and has a concavo-convex structure on the surface. In addition, as another layer between a reinforcement sheet and a base material sheet, an adhesive layer is mentioned, for example. Examples of the heat and moisture permeable waterproof sheet having an adhesive layer include a configuration having a reinforcing sheet, an adhesive layer, a base sheet, and a heat ray reflective layer in this order. The thickness of the adhesive layer can be, for example, 10 μm or less.

3. Base Material Sheet The base material sheet in the present disclosure has a reinforcing sheet on one surface and a heat ray reflective layer on the other surface.

  The base sheet in the present disclosure contains a resin component, and preferably contains an additive such as a filler as necessary. Moreover, a base material sheet has moisture permeability normally, and it is preferable that it has water shielding property. In the present disclosure, moisture permeability refers to a property of allowing water as a gas, that is, water vapor to pass therethrough, and water shielding refers to a property of not allowing water as a liquid to pass. Furthermore, the base material sheet may have air permeability. Air permeability refers to the property of allowing gas such as carbon dioxide to pass through.

(1) Resin component Although the kind of resin component used for a base material sheet is not specifically limited, For example, as a thermoplastic resin, polyolefin resin, polyester resin, polyacrylic resin, polystyrene resin, polyimide resin, Examples thereof include polyamide resins, and among them, polyolefin resins are preferable. This is because heat resistance, water resistance, chemical resistance and cost are excellent.

  Examples of polyolefin resins include olefin homopolymers, copolymers of two or more olefins, copolymers of one or more olefins and one or more polymerizable monomers that can be polymerized with olefins, and the like. Can be mentioned. Examples of the olefin (monomer unit) include ethylene, propylene, butene, hexene and the like. The copolymer may be a binary system, a ternary system, or a quaternary system. The copolymer may be a random copolymer or a block copolymer.

  Specific examples of the polyolefin-based resin include, for example, a polyethylene-based resin and a polypropylene-based resin, and among them, a polyethylene-based resin is preferable. Examples of the polyethylene resin include low density polyethylene, linear polyethylene, and high density polyethylene. The polyethylene resin preferably contains ethylene as a main component of monomer units. Further, as the polyolefin-based resin, poly (4-methylpentene-1), poly (butene-1), an ethylene-vinyl acetate copolymer, or the like may be used.

  On the other hand, a propylene homopolymer is mentioned as an example of a polypropylene resin. The propylene homopolymer preferably has isotactic or syndiotactic stereoregularity. Other examples of polypropylene resins include copolymers of propylene and other α-olefins. Examples of other α olefins include at least one of ethylene, butene-1, hexene-1, and heptene-1,4-methylpentene-1. The polypropylene resin preferably contains propylene as a main component of monomer units.

  The type of the resin component in the present disclosure is not particularly limited. For example, as a thermosetting resin, a phenol resin, an epoxy resin, a urea resin, a melamine resin, an unsaturated polyester resin, a urethane resin, An imide resin or the like may be used.

  In the present disclosure, one type of resin may be used, or two or more types of resins may be used. When two or more kinds of resins are used, it is preferable to use a polyolefin resin as a main component, and more preferable to use a polyethylene resin as a main component. Moreover, content of the resin component in a base material sheet is 45 mass% or more, for example, and 55 mass% or more may be sufficient as it. On the other hand, the content of the resin component in the base sheet is, for example, 99% by mass or less and may be 98% by mass or less.

(2) Filler The base sheet in the present disclosure may contain a filler. By adding a filler and preparing a base sheet by stretching, for example, as shown in FIG. 4, for example, voids 2a are generated inside the base sheet 2, and a base sheet that is a porous body is obtained. In addition, the code | symbol 2b in FIG. 4 shows a filler. Examples of the filler include inorganic fillers and organic fillers. Hereinafter, the base material sheet that is a porous body may be simply referred to as a porous sheet.

  Examples of the inorganic filler include calcium carbonate such as heavy calcium carbonate and light calcium carbonate, calcined clay, talc, silicon oxide, diatomaceous earth, titanium oxide, magnesium oxide, zinc oxide, and barium sulfate. The inorganic filler may be surface-treated with a fatty acid. Among these, the inorganic filler is preferably heavy calcium carbonate, light calcium carbonate, calcined clay, or talc. This is because it is inexpensive and has good moldability.

  The average particle diameter of the inorganic filler is, for example, from 0.01 μm to 15 μm, and may be from 0.01 μm to 8 μm. In addition, an average particle diameter is defined as a statistical average value of the particle size distribution measured on a volume basis, and refers to, for example, a value measured by LA-920 manufactured by Horiba, Ltd.

  Examples of organic fillers include polyethylene terephthalate, polybutylene terephthalate, polycarbonate, polyamide, polyethylene naphthalate, polystyrene, melamine, polyethylene sulfite, polyimide, polyethyl ether ketone, polyether ether ketone, polyphenylene sulfite, and poly-4. -Methyl-1-pentene, polymethyl methacrylate and the like. Further, the organic filler is a homopolymer of cyclic olefin, a copolymer of cyclic olefin and ethylene, and has a melting point of 120 ° C. or higher and 300 ° C. or lower or a glass transition temperature of 120 ° C. or higher and 280 ° C. or lower. Materials can also be used. The organic filler and the above-described resin are preferably different materials.

  The content of the filler in the base material sheet is, for example, 1% by mass to 65% by mass, and preferably 2% by mass to 55% by mass.

(3) Other Additives The base sheet in the present disclosure may contain various additives such as a surfactant, a lubricant, and an antistatic material as necessary. By adding a surfactant, for example, condensation can be prevented. Examples of the surfactant include nonionic surfactants, anionic surfactants, and zwitterionic surfactants. Examples of the nonionic surfactant include glycerin fatty acid ester, pentaerythritol fatty acid ester, polyoxypropylene / polyoxyethylene block polymer, and the like. Examples of the anionic surfactant include salts such as sulfonate and alkylbenzene sulfonate. In addition, as said salt, a sodium salt, potassium salt, ammonium salt etc. are mentioned, for example.

  Examples of the lubricant include aliphatic hydrocarbons such as liquid paraffin, synthetic paraffin, and microcrystalline wax, stearic acid esters of linear alcohols, higher fatty acid amides, and the like. Examples of the antistatic material include alkyl diethanolamine, hydroxyalkyl monoethanolamine, glycerin fatty acid ester, polyglycerin fatty acid ester, alkyl sulfonic acid soda, alkyl benzene sulfonic acid soda, and perchloric acid tetraalkyl ammonium salt. In addition, content of an additive is not specifically limited, According to the kind of additive, it selects suitably.

(4) Base Sheet The base sheet in the present disclosure preferably has a concave portion and a convex portion on the surface opposite to the reinforcing sheet, and the convex portion and the heat ray reflective layer preferably overlap in plan view. In addition, it is said that said base material sheet has a recessed part and a convex part in the surface on the opposite side to a reinforcement sheet, and the said convex part and a heat ray reflective layer overlap on planar view said "1. heat ray reflective layer. The description is omitted here because it can be the same as that described in the section.

  The substrate sheet in the present disclosure is preferably a porous sheet having voids inside. The porous sheet has moisture permeability, air permeability, and water barrier properties. Although the porosity of a porous sheet is not specifically limited, For example, it is 35% or more and 60% or less, and it is preferable that they are 40% or more and 58% or less.

The porosity means the ratio of voids in the porous sheet and can be calculated by the following formula 1.
Porosity (%) = {(ρo−ρ) / ρo} × 100 (Expression 1)
In Equation 1, ρ is the density of the porous sheet and conforms to JIS P 8118. ρo is the true density of the porous sheet. The true density can be determined by analyzing the types of main material components constituting the porous sheet and their constituent ratios and using general values of the types of material components. For example, the density of polypropylene is 0.9 g / cm ³ and the density of calcium carbonate is 2.7 g / cm ³ . When the porous sheet has been subjected to stretching treatment, the true density is substantially equal to the density of the material before stretching unless the material before stretching contains a large amount of air. Therefore, the true density may be obtained from the material before stretching, or may be obtained by a dry density measuring method by a constant volume expansion method. In the latter case, examples of the measuring apparatus include a dry automatic densimeter Accupick 1330 manufactured by Shimadzu Corporation.

  The average diameter of the voids is, for example, 1 μm or more and 50 μm or less, preferably 2 μm or more and 40 μm or less, and more preferably 5 μm or more and 30 μm or less. In the present disclosure, an average [(L + M) / 2] obtained by measuring and averaging the maximum diameter (L) of the void and the maximum diameter (M) in the direction perpendicular thereto is defined as the void diameter. The diameter of at least n (n is an integer of 1 or more, and preferably an integer of 100 or more) is measured, and the average value is defined as the average diameter of the voids. For example, a scanning electron microscope S-2400 manufactured by Hitachi, Ltd. can be used for cross-sectional observation of the sample.

  Although the thickness of a porous sheet is not specifically limited, For example, they are 10 micrometers or more and 100 micrometers or less, and it is preferable that they are 20 micrometers or more and 50 micrometers or less. The porous sheet may have a single layer structure or a multilayer structure. When the porous sheet has a multilayer structure, the resin component contained in each layer may be the same.

Moisture permeability of the porous sheet is, for example, 5000g ^/ (m 2 · day) or more, preferably 6000g ^/ (m 2 · day) or more, it is 8000g ^/ (m 2 · day) or more More preferred. The moisture permeability conforms to the condition B (temperature 40 ° C. ± 0.5 ° C., relative humidity 90% ± 2%) of the moisture permeability test method (cup method) of moisture-proof packaging material defined in JIS Z 0208: 1973. It can be measured. For example, a test body created by installing a sheet to be tested on a moisture permeable cup (PA-201 manufactured by Tester Sangyo Co., Ltd.) and a hygroscopic agent is placed in a constant temperature and humidity apparatus set at a temperature of 40 ° C. and a humidity of 90%. After 24 hours, the increase in the mass of the cup is measured.

  The water pressure resistance of the porous sheet is, for example, 10 kPa or more, and preferably 20 kPa or more. The water pressure resistance can be measured in accordance with the method A (low water pressure method) of the water resistance test (hydrostatic pressure method) of the waterproof test method for textiles specified in JIS L 1092: 2009. For example, after attaching a sheet to be tested to a water pressure tester (woven fabric water resistance tester No. 409 of Yasuda Seiki Seisakusho) so that the water hits the front side, the level device filled with water is 600 mm / min (10 mm / min) The water level is measured in mm when water droplets come out from three places on the back side of the sheet to be tested.

The density of the porous sheet is, for example, 5 g / cm ³ or more and 100 g / cm ³ or less, and preferably 20 g / cm ³ or more and 50 g / cm ³ or less. When the density of the porous sheet has the above lower limit, sufficient strength can be obtained, and by having the above upper limit, good moisture permeability can be obtained. The density can be calculated, for example, by measuring the thickness and mass of a sheet to be tested having a size of 100 mm × 1000 mm.

  The manufacturing method of a porous sheet will not be specifically limited if it is a method by which a desired porous sheet is obtained, A well-known manufacturing method is employable. Moreover, it is preferable that the porous sheet in the present disclosure has been stretched. That is, the porous sheet is preferably a stretched porous sheet.

4). Heat-insulating and moisture-permeable waterproof sheet The heat-insulating and moisture-permeable waterproof sheet of the present disclosure preferably has a predetermined heat-insulating property. The heat-insulating and moisture-permeable waterproof sheet preferably has a reflectance at a wavelength of 10 μm of, for example, 20% or more, more preferably 30% or more, and particularly preferably 40% or more. When the reflectance of the heat-insulating and moisture-permeable waterproof sheet at the wavelength of 10 μm has the above lower limit, good heat shielding properties can be obtained. The reflectance of the heat-insulating and moisture-permeable waterproof sheet is obtained when a gold coating integrating sphere is attached to the sample chamber of a Fourier transform infrared spectroscopic analyzer (Nicolet Magna 550) and the spectral reflectance of the gold-coated surface mirror is 100%. It can obtain | require by measuring the reflectance in wavelength 10micrometer.

The heat-insulating and moisture-permeable waterproof sheet of the present disclosure preferably has a predetermined moisture permeability. For example, the moisture permeability resistance of the heat-insulating and moisture-permeable waterproof sheet is preferably 0.65 m ² · s · Pa / μg or less, and preferably 0.30 m ² · s · Pa / μg or less, In particular, it is preferably 0.24 m ² · s · Pa / μg or less, more preferably 0.19 m ² · s · Pa / μg or less. When the moisture permeability resistance of the heat-insulating and moisture-permeable waterproof sheet has the above upper limit, good air permeability can be obtained, and the occurrence of condensation and the like can be suppressed. The moisture permeability resistance can be measured by a method based on JIS A 1324.

  As shown in FIG. 5, the heat-insulating and moisture-permeable waterproof sheet of the present disclosure has a tensile strength in the biaxial direction of MD (Machine Direction) direction and TD (Transverse Direction) direction with respect to the heat-insulating and moisture-permeable waterproof sheet 10. 100 N / 50 mm or more is preferable. Since the tensile strength of the heat-insulating and moisture-permeable waterproof sheet has the above lower limit, it is possible to suppress the occurrence of problems such as breakage of the heat-insulating and moisture-permeable waterproof sheet during construction. The tensile strength can be measured under the condition of a tensile speed of 200 ± 10 mm / min according to JIS L 1096 8.14.

  As shown in FIG. 5, the heat-insulating and moisture-permeable waterproof sheet of the present disclosure holds the needles in the biaxial directions in the MD (Machine Direction) direction and the TD (Transverse Direction) direction with respect to the heat-insulating and moisture-permeable waterproof sheet 10. The strength may be 27N or more, or 50N or more. When the spelling needle holding strength of the heat-insulating and moisture-permeable waterproof sheet has the above lower limit, it is possible to suppress the occurrence of problems such as damage to the heat-insulating and moisture-permeable waterproof sheet due to strong winds during construction. The spelling needle holding strength can be measured according to JIS A 6111.

  The heat-insulating and moisture-permeable waterproof sheet of the present disclosure preferably has a predetermined waterproof property. For example, the heat and moisture permeable waterproof sheet preferably has a water pressure resistance of, for example, 1 kPa or more, particularly 5 kPa or more, according to JIS L 1092 (waterproof test method for textiles, water resistance test method A (low water pressure method)). It is preferable that it is especially 10 kPa or more.

  The heat-insulating and moisture-permeable waterproof sheet of the present disclosure preferably has a predetermined durability. For example, it is preferable that the waterproof property after a 30-year durability test of the heat-insulating and moisture-permeable waterproof sheet is 8 kPa or more and the residual tensile strength in the MD direction and the TD direction is 50% or more. In addition, a 30-year durability test can be performed based on JIS A6111. In addition, the waterproof property and the tensile strength here can be the same as the measurement method of the waterproof property and the tensile strength described above, and thus description thereof is omitted here.

5. Manufacturing method of heat-insulating and moisture-permeable waterproof sheet The manufacturing method of the heat-insulating and moisture-permeable waterproof sheet of the present disclosure is not particularly limited as long as the intended heat-insulating and moisture-permeable waterproof sheet is obtained. Drawing 3 (a)-(c) is an outline process figure showing an example of the manufacturing method of the heat insulation moisture permeability waterproof sheet of this indication. As shown in FIG. 3A, a reinforcing sheet 1 and a base sheet 2 are prepared, and a laminate having the reinforcing sheet 1 and the base sheet 2 is obtained as shown in FIG. Next, as illustrated in FIG. 3C, the heat-shielding transparent layer according to the present disclosure is formed by forming the heat ray reflective layer 3 on the surface of the laminate obtained in FIG. The wet waterproof sheet 10 can be obtained.

  Examples of the method for laminating the reinforcing sheet and the base sheet include dry lamination, hot melt, wet lamination, thermal lamination, and the like. Among these, thermal lamination is preferable. When the reinforcing sheet and the base sheet are laminated by thermal lamination, a part of the resin component contained in the base sheet is melted by heat and bonded to the reinforcing sheet that is a fabric. Therefore, the base sheet can be laminated so as to follow the surface shape of the reinforcing sheet. As a result, the substrate sheet has a concavo-convex structure on the side opposite to the reinforcing sheet. Therefore, by forming the heat ray reflective layer by a coating method, the ink constituting the heat ray reflective layer can be selectively placed on the convex portion of the surface of the base material sheet. For example, as shown in FIG. In addition, it is possible to obtain a heat-insulating and moisture-permeable waterproof sheet having a region that transmits light and air and a region that reflects heat rays.

  The method for forming the heat ray reflective layer is not particularly limited as long as it is a method capable of forming a desired heat ray reflective layer at a position overlapping with the convex portion on the surface of the base sheet in plan view. The method of apply | coating the ink which comprises a reflection layer to a base material sheet, and drying is mentioned. As a method for applying the ink constituting the heat ray reflective layer, for example, a known printing method or the like can be used. Specific examples include gravure coating, direct gravure coating, reverse roll coating, spray coating, knife coating, wire bar coating, air knife coating, doctor blade coating, dipping coating, and die coating. Although a drying temperature is not specifically limited, For example, they are 70 degreeC or more and 80 degrees C or less.

When the heat ray reflective layer is formed by a coating method, the coating amount of the ink constituting the heat ray reflective layer is preferably, for example, 0.5 g / m ² or more and 3 g / m ² or less, and more preferably 1 g / m ² or more. It is preferable that it is ² g / m ² or less.

B. Hereinafter, the laminated body for building materials according to the present disclosure will be described.

  9 to 12 are schematic perspective views illustrating the building material laminate of the present disclosure. As shown in FIG. 9, the building material laminate 20 includes a wooden substrate 5 and a heat-insulating and moisture-permeable waterproof sheet 10 on one surface side of the wooden substrate 5. Moreover, the laminated body 20 for building materials of this indication may have the contact bonding layer 6 between the wooden base material 5 and the heat insulation moisture-permeable waterproof sheet 10, as shown in FIG. Furthermore, the building material laminate 20 of the present disclosure may have a tucker needle 7 for fixing the wood base material 5 and the heat-insulating moisture-permeable waterproof sheet 10 as shown in FIG. That is, the heat and moisture permeable waterproof sheet 10 may be fixed to the wooden substrate 5 by the tucker needle 7. Furthermore, the building material laminate 20 of the present disclosure has an adhesive layer 6 between the wood base material 5 and the heat-insulating and moisture-permeable waterproof sheet 10 as shown in FIG. You may have the tucker needle 7 which fixes the heat | fever moisture-permeable waterproof sheet 10. FIG.

  Here, since the heat-insulating and moisture-permeable waterproof sheet is a member having a function of suppressing intrusion of moisture into the adherend, for example, the adherend is made of wood, and the wood-like adherend is wet However, there is a problem that a heat-insulating and moisture-permeable waterproof sheet cannot be attached. Therefore, for example, when the adherend gets wet due to rain in an environment where it rains, the work of attaching the heat-permeable and moisture-permeable waterproof sheet is delayed until the adherend is dry. Further, for example, in a windy environment, it is difficult to attach the heat-insulating and moisture-permeable waterproof sheet to the adherend, and there is a possibility that problems such as breaking of the heat-insulating and moisture-permeable waterproof sheet may occur. On the other hand, since the laminate for building materials of the present disclosure has a heat-insulating and moisture-permeable waterproof sheet on one surface side of the wooden base material, the work for pasting the heat-insulating and moisture-permeable waterproof sheet is performed outdoors such as in a construction site. It can be simplified and workability can be improved.

  Hereinafter, the building material laminate of the present disclosure will be described for each configuration.

1. Thermal-insulation moisture-permeable waterproof sheet The thermal-insulation moisture-permeable waterproof sheet in this indication is a member arranged at one side of a wooden substrate mentioned below. In addition, about the heat insulation moisture-permeable waterproof sheet, since it can be the same as that of the content described in the above-mentioned "A. Heat insulation moisture-permeable waterproof sheet", description here is abbreviate | omitted.

2. Wooden base material The wooden base material in the present disclosure is a member in which the above-described heat-permeable and moisture-permeable waterproof sheet is disposed on one surface side.

  Examples of the wooden base material in the present disclosure include a wooden material used for general building materials, a wooden material formed by processing wood fibers, and a frame structure of a frame wall construction method and a wooden shaft construction method. Specific wood base materials include, for example, insulation boards, sizing boards, medium density wood fiber boards (MDF), high density wood fiber boards (HDF), particle boards (PB), lumbar cores, single board laminates (LVL) ), Orientation board (OSB), pararam (PSL), wafer board (WB) and the like. In the present disclosure, a wooden base material can be appropriately selected according to the use of the building material laminate.

  The thickness and size of the wood base material in the present disclosure are not particularly limited because they can be appropriately selected according to the use of the building material laminate.

  As the wood substrate in the present disclosure, for example, a commercially available material can be used.

3. Building material laminate The building material laminate of the present disclosure includes at least the above-described heat-permeable and moisture-permeable waterproof sheet and a wooden substrate. Here, the “building material” refers to a building material necessary for constituting a building such as a house. As a specific building material, for example, a frame structure of a frame wall construction method or a wooden frame construction method can be cited.

  The heat-permeable and moisture-permeable waterproof sheet used for a laminate for building materials is usually a shield that blocks heat rays from the outside when the surface on the wooden substrate side is the inside and the surface opposite to the wooden substrate is the outside. It arrange | positions so that heat resistance, the moisture permeability which permeate | transmits a vapor | steam from the inside, and the waterproofness which prevents the penetration | invasion of the water from the outside may be exhibited. Therefore, in this indication, a woody base material is arranged on the surface by the side of a reinforcement sheet of a heat insulation moisture permeability waterproof sheet.

  The wooden base material and the heat-insulating and moisture-permeable waterproof sheet constituting the building material laminate need only be laminated so that the heat-insulating and moisture-permeable waterproof sheet can exhibit desired heat-insulating properties, moisture-permeable and waterproof properties. . For example, as shown in FIGS. 13A and 13B, the heat-insulating and moisture-permeable waterproof sheet 10 is larger than the wooden substrate 5 in plan view, and the wooden substrate 5 is made of the heat-insulating and moisture-permeable waterproof sheet 10. May be laminated so as to cover. By covering the entire surface of the wooden substrate with a heat-insulating and moisture-permeable waterproof sheet, it is possible to impart sufficient heat shielding properties, moisture permeability and waterproof properties to the wooden substrate. Further, as shown in FIG. 13 (b), in the heat-insulating and moisture-permeable waterproof sheet 10, the region X that does not overlap the wooden base material 5 in a plan view is folded so as to wrap around the wooden base material 5. It can also be fixed. In this case, water can be prevented from entering from the side surface of the laminate for building materials, and more excellent waterproof properties can be exhibited. In addition, FIG.13 (b) is the BB sectional drawing of Fig.13 (a).

  Moreover, in this indication, you may laminate | stack a several heat insulation moisture-permeable waterproof sheet on one wooden base material. In this case, for example, as shown in FIGS. 14 (a) and 14 (b), it is preferable to laminate a plurality of heat-insulating and moisture-permeable waterproof sheets 10 on the wooden substrate 5 so as to partially overlap. Generation | occurrence | production of the malfunction that a clearance gap produces between each heat-insulation moisture-permeable waterproof sheet and water penetrate | invades from the said clearance gap can be suppressed.

  The building material laminate of the present disclosure may have the above-described wooden base material and the heat-insulating and moisture-permeable waterproof sheet, but if necessary, between the wooden base material and the heat-insulating and moisture-permeable waterproof sheet. An adhesive layer may be provided.

  As shown in FIG. 10, when the adhesive layer 6 is provided between the wooden substrate 5 and the heat-insulating moisture-permeable waterproof sheet 10, the adhesive layer adheres the heat-insulating moisture-permeable waterproof sheet 10 to the surface of the wooden substrate 5. It is preferable to arrange so that it can be fixed. The adhesive layer 6 may be formed in a pattern between the wooden substrate 5 and the heat-insulating and moisture-permeable waterproof sheet, or may be formed on the entire surface. In the present disclosure, the adhesive layer is preferably formed in a pattern between the wooden base material and the heat-insulating and moisture-permeable waterproof sheet. When the adhesive layer is formed on the entire surface between the wooden substrate and the heat-insulating and moisture-permeable waterproof sheet, one surface of the heat-insulating and moisture-permeable waterproof sheet is covered with the adhesive layer, so This is because the moisture permeability of the sheet may not be sufficiently obtained.

  When the adhesive layer is formed in a pattern between the wooden substrate and the heat-insulating and moisture-permeable waterproof sheet, the ratio of the area in plan view where the adhesive layer is arranged is the wooden substrate and the heat-insulating and moisture-permeable waterproof sheet. Is, for example, preferably 10% or more and 50% or less, more preferably 15% or more and 45% or less, and particularly preferably 20% or more and 40% or less. When the ratio of the area in plan view where the adhesive layer is disposed is within the above range, the heat-insulating and moisture-permeable waterproof sheet can be fixed to the wooden base material, and the surface of the heat-insulating and moisture-permeable waterproof sheet is bonded. It is possible to suppress a decrease in moisture permeability due to being covered with the layer. The “fixing” here includes not only complete fixing but also temporary fixing such as temporary fixing.

  Here, the “ratio of the area in plan view where the adhesive layer is disposed” means, for example, that the adhesive layer 6 is formed in a dot shape as shown in FIG. 15A and is shown in FIG. 15B. The ratio of the total area surrounded by the line 6R that defines the adhesive layer 6 when the adhesive layer 6 is viewed in plan view. Further, “the area in which the wooden base material and the heat-insulating and moisture-permeable waterproof sheet overlap in plan view” means, for example, as shown in FIG. 15B, when the building material laminate is viewed in plan, the wooden base material 5 The area surrounded by the line 5R that defines the area and the area surrounded by the line 10R that defines the heat-insulating and moisture-permeable waterproof sheet 10 indicate areas that overlap in plan view. Therefore, in the case of FIGS. 15A and 15B, the “area where the wooden base material and the heat-insulating and moisture-permeable waterproof sheet overlap in plan view” corresponds to the area of the region surrounded by the line 5R. Note that in FIG. 15A, each member is illustrated separately for the sake of simplicity.

  The shape of the adhesive layer formed in a pattern between the wooden substrate and the heat-insulating and moisture-permeable waterproof sheet is not particularly limited. For example, it may be dot-shaped as shown in FIG. 16A may be a frame shape, or may be a lattice shape as shown in FIG. Although not shown, a combination of a dot shape, a frame shape, and a lattice shape may be used. In the present disclosure, the shape of the adhesive layer is preferably a dot shape from the viewpoint that a patterned adhesive layer can be easily formed. In addition, about the code | symbol which is not demonstrated in FIG. 16 (a), (b), since it can be the same as that of FIG. 11 mentioned above, description here is abbreviate | omitted. Also, FIGS. 16A and 16B are shown with each member separated for the sake of simplicity.

  The adhesive layer in the present disclosure is a member for fixing the heat-insulating and moisture-permeable waterproof sheet to the surface of the wooden substrate, and preferably has a predetermined adhesive property. The adhesive property of the adhesive layer may be an adhesive property that can fix the heat-permeable and moisture-permeable waterproof sheet to the surface of the wooden substrate, and can be appropriately adjusted according to the use of the laminate for building materials. .

  As the adhesive constituting the adhesive layer in the present disclosure, an adhesive used for general building materials can be used. Such adhesives include, for example, one-part or two-part cured or non-cured vinyl, (meth) acrylic, polyamide, polyester, polyether, polyurethane, epoxy, rubber And other adhesives such as a solvent type, an aqueous type, and an emulsion type.

  The thickness of the adhesive layer in the present disclosure can be appropriately adjusted according to the type of adhesive and the required adhesiveness, and is not particularly limited.

As a method for forming an adhesive layer in the present disclosure, for example, an adhesive is coated on at least one surface of a wooden substrate or a heat-permeable and moisture-permeable waterproof sheet, and the wooden substrate and the heat- and moisture-permeable and moisture-permeable material are interposed via the adhesive. A method of laminating a waterproof sheet and drying it may be mentioned. The adhesive in the present disclosure can be applied by, for example, a direct gravure roll coating method, a gravure roll coating method, a kiss coating method, a reverse roll coating method, a fountain method, a transfer roll coating method, or other methods. The application amount of the adhesive can be appropriately adjusted according to the ratio of the area in plan view where the adhesive layer is disposed, the adhesiveness required for the adhesive layer, the type of adhesive, and the like. The specific application amount of the adhesive can be, for example, 0.1 g / m ² or more and 10 g / m ² (dry state) or less, and more preferably 1 g / m ² or more and 5 g / m ² (dry state) or less. It is preferable that

  The laminated body for building materials according to the present disclosure only needs to have the above-described wooden base material and the heat-insulating and moisture-permeable waterproof sheet, but the wooden base material and the heat-insulating and moisture-permeable waterproof sheet are fixed as necessary. You may have a tucker needle.

  The tucker needle in the present disclosure is a fastener for fixing the heat-insulating and moisture-permeable waterproof sheet to the wooden base material, and using the tucker, the U-shaped drive-in from the heat-insulating and moisture-permeable waterproof sheet side of the building material laminate It is a needle.

As shown in FIG. 11, when the heat-insulating and moisture-permeable waterproof sheet 10 is fixed to the wooden substrate 5 by the tucker needles 7, the number of tucker needles 7 is the heat-insulating and moisture-permeable waterproofing on the surface of the wooden substrate 5. The number is preferably such that the sheet 10 can be fixed. The specific number of tucker needles is preferably 10 or more and 30 or less, for example, 15 or more and 25 or less per 1 m ^{2 of the} area in which the wooden base material and the heat-permeable and moisture-permeable waterproof sheet overlap in plan view. It is preferable that While the number of tacker needles per 1 m ^{2 of} area over which the wooden substrate and the heat-insulating and moisture-permeable waterproof sheet overlap in plan view can be fixed to the wooden substrate, the heat-insulating and moisture-permeable waterproof sheet can be fixed to the wooden substrate. In addition, the number of through-holes that are generated when the heat-insulating and moisture-permeable waterproof sheet is penetrated by the tucker needle can be suppressed within a predetermined range. Therefore, the penetration | invasion of the water from the through-hole which arose in the heat-insulation moisture-permeable waterproof sheet can be suppressed, and a waterproof fall can be suppressed.

Here, “the area of 1 m ² where the wooden base material and the heat-insulating and moisture-permeable waterproof sheet overlap in plan view” means that, as described with reference to FIG. The area surrounded by the line 5R that defines the material 5 and the area surrounded by the line 10R that defines the heat-insulating and moisture-permeable waterproof sheet 10 indicate an area 1 m ² that overlaps in plan view.

  The tucker needle in the present disclosure may be the same as that generally used for building materials. The size of the tucker needle is not particularly limited, and can be appropriately selected according to the thickness of the heat-insulating and moisture-permeable waterproof sheet.

  The tucker needle in the present disclosure can be driven from the heat-insulating and moisture-permeable waterproof sheet side of the building material laminate using the tucker. In addition, about the tucker, since it is the same as that used as a fixing means of a general building material, description here is abbreviate | omitted.

4). The manufacturing method of the laminated body for building materials The manufacturing method of the laminated body for building materials of this indication should just be a method which can obtain the laminated body for desired building materials, and is not specifically limited. For example, the method which has the process of preparing a wooden base material and a heat insulation moisture-permeable waterproof sheet, and the lamination | stacking process of laminating | stacking a wooden base material and a heat insulation moisture-permeable waterproof sheet is mentioned. Moreover, you may have another process as needed. Other processes include, for example, an adhesive application step for applying an adhesive to a laminated surface of a wooden substrate or a heat-permeable moisture-permeable waterproof sheet before the lamination step, and a heat-permeable moisture-permeable waterproof sheet after the lamination step. From the surface on the side, a tucker process for driving a tucker needle and the like can be mentioned.

  The present invention is not limited to the above embodiment. The above-described embodiment is an exemplification, and the present invention has substantially the same configuration as the technical idea described in the claims of the present invention, and any device that exhibits the same function and effect is the present invention. It is included in the technical scope of the invention.

  The present disclosure will be described in more detail with reference to the following examples.

[Example 1]
As a base material sheet, a polyethylene film having a density of 30 g / m ² (Yamatogawa Polymer Co., Ltd., YP5000) was prepared. Further, as the reinforcing sheet, density 34g / ^{m 2} of fibrous cross-laminated nonwoven fabric (JX ANCI Co., CLAF HS24) was prepared. As shown in FIG. 3 (a), the base sheet 2 and the reinforcing sheet 1 are laminated using a heat laminating method, and as shown in FIG. 3 (b), the base sheet 2 and the reinforcing sheet 1 are laminated. The laminated body which has was prepared.

Next, an aluminum paste ink (Lamic SR (RE-4) silver, manufactured by Dainichi Seika Kogyo Co., Ltd.) is applied to the surface of the obtained laminate on the base sheet side by a direct gravure coating method so that the coating amount is 1. The coating was applied to 0.0 ± 0.1 g / m ² and then dried at 80 ° C. for 10 seconds to form the heat ray reflective layer 3 as shown in FIG.
Thus, the heat-insulation moisture-permeable waterproof sheet 10 which laminated the reinforcement sheet 1, the base material sheet 2, and the heat ray reflective layer 3 in order was obtained.

[Example 2]
A heat-insulating and moisture-permeable waterproof sheet was obtained in the same manner as in Example 1 except that the coating amount of the ink constituting the heat ray reflective layer was 1.5 ± 0.1 g / m ² .

[Example 3]
A heat-insulating and moisture-permeable waterproof sheet was obtained in the same manner as in Example 1 except that the coating amount of the ink constituting the heat ray reflective layer was 2.0 ± 0.1 g / m ² .

[Comparative Example 1]
As a base material sheet, a polyethylene film having a density of 30 g / m ² (Yamatogawa Polymer Co., Ltd., YP5000) was prepared. As shown in FIG. 6 (a), an aluminum paste ink (Lamic SR (RE-4) silver, manufactured by Dainichi Seika Kogyo Co., Ltd.) is applied to one surface of the obtained base sheet 2 by a direct gravure coating method. The coating was applied so that the coating amount was 1.5 ± 0.1 g / m ^2, and then dried at 80 ° C. for 10 seconds to form the heat ray reflective layer 3.

Next, a fiber orthogonal laminated nonwoven fabric (manufactured by JX ANCI Corporation, Warif HS24) having a density of 34 g / m ² was prepared as a reinforcing sheet. As shown in FIG. 6B, the reinforcing sheet 1 was laminated on the other surface of the base sheet 2 described above using a thermal laminating method.
Thus, as shown in FIG.6 (c), the heat insulation moisture-permeable waterproof sheet 10 'which laminated | stacked the reinforcement sheet 1, the base material sheet 2, and the heat ray reflective layer 3 in order was obtained.

[Comparative Example 2]
A heat-insulating and moisture-permeable waterproof sheet was obtained in the same manner as in Comparative Example 1 except that the coating amount of the ink constituting the heat ray reflective layer was 0.5 ± 0.1 g / m ² .

[Comparative Example 3]
As a base material sheet, a polyethylene film having a density of 30 g / m ² (Yamatogawa Polymer Co., Ltd., YP5000) was prepared. Further, as the reinforcing sheet, density 34g / ^{m 2} of fibrous cross-laminated nonwoven fabric (JX ANCI Co., CLAF HS24) was prepared. As shown in FIG. 7 (a), the base sheet 2 and the reinforcing sheet 1 are laminated using a heat laminating method. As shown in FIG. 7 (b), the base sheet 2 and the reinforcing sheet 1 are laminated. The laminated body which has was prepared.

Next, as shown in FIG.7 (c), the heat ray reflective layer 3 with a thickness of 80 +/- 5nm was formed in the surface by the side of the base material sheet 2 of the obtained laminated body by the vacuum evaporation method.
In this way, a heat-insulating and moisture-permeable waterproof sheet 10 ′ in which the reinforcing sheet 1, the base sheet 2 and the heat ray reflective layer 3 were laminated in order was obtained.

[Comparative Example 4]
As shown in FIG. 8, the material constituting the protective layer 4 (arrow base SD-1200, manufactured by Unitika Ltd.) is applied to the surface opposite to the base sheet 2 of the heat ray reflective layer 3 by a direct gravure coating method. The coating amount was 0.5 ± 0.1 g / m ² and then dried at 80 ° C. for 10 seconds to obtain a heat-insulating and moisture-permeable waterproof sheet 10 ′.

  Table 1 shows configurations of Examples 1 to 3 and Comparative Examples 1 to 4.

In Examples 1-3, the concealment rate of the heat ray reflective layer in the base sheet was 50% or more and 90% or less. In Examples 1 to 3, as shown in FIGS. 3A to 3C, after the reinforcing sheet 1 and the base sheet 2 are laminated by the heat laminating method, the heat ray reflective layer 3 is formed by the coating method. Yes. Therefore, the base sheet 2 follows the uneven structure on the surface of the reinforcing sheet 1, the surface of the base sheet 2 becomes an uneven structure, and the ink constituting the heat ray reflective layer 3 is applied on the uneven structure on the surface of the base sheet 2. Will be. Specifically, the ink which comprises the heat ray reflective layer 3 will be selectively apply | coated to the convex part of the base material sheet 2 surface. Therefore, the heat ray reflective layer 3 is formed on the convex part on the surface of the base material sheet 2, and the heat shielding moisture permeable waterproof sheet 10 having a concealment rate of the heat ray reflective layer in the base material sheet of 50% or more and 90% or less can be obtained. .
In Comparative Examples 1 and 2, the concealment rate of the heat ray reflective layer in the base sheet was 100%. As shown in FIGS. 6A to 6C, after the heat ray reflective layer 3 is formed on the base sheet 2 by the coating method, the reinforcing sheet 1 is laminated by the heat laminating method. The ink constituting the heat ray reflective layer 3 is applied to the entire surface.
In Comparative Examples 3 and 4, the heat ray reflective layer is formed by vacuum deposition. Therefore, for example, as shown in FIGS. 7B and 7C, even if the surface of the base material sheet 2 forming the heat ray reflective layer 3 has an uneven structure, the heat ray reflective layer 3 is formed on the entire surface of the base material sheet 2. As a result, the concealment rate of the heat ray reflective layer in the base sheet is 100%.

[Evaluation]
(1) Moisture permeability The moisture permeability of the heat-insulating and moisture-permeable waterproof sheets obtained in Examples 1 to 3 and Comparative Examples 1 to 4 was evaluated. Evaluation of moisture permeability was performed by measuring moisture permeability resistance. The moisture permeability resistance was measured according to JIS A 1324.
The results are shown in Table 2.

(2) Heat-insulating property The heat-insulating properties of the heat-insulating and moisture-permeable waterproof sheets obtained in Examples 1 to 3 and Comparative Examples 1 to 4 were evaluated. The heat shielding property was evaluated by measuring the reflectance at a wavelength of 10 μm.
The results are shown in Table 2.

(3) Moisture and heat resistance The moisture and heat resistance of the heat-insulating and moisture-permeable waterproof sheets obtained in Examples 1 to 3 and Comparative Examples 1 to 4 were evaluated. Evaluation of moisture and heat resistance was performed by dropping one drop (10 mmφ) of pure water with a dropper onto the surface of the heat-insulating and moisture-permeable waterproof sheet on the heat ray reflective layer side, at a temperature of 60 ° C. and a humidity of 90% R.D. This was carried out by visually confirming the maintenance state of the heat ray reflective layer to which pure water was dropped by leaving it under the constant temperature and humidity of H. for 4 hours.
The results are shown in Table 2.

  The evaluation results of moisture permeability, heat shielding properties, and heat and moisture resistance were examined as follows.

(1) Moisture permeability With respect to moisture permeability, the JIS standard defines moisture permeability when the moisture permeability resistance is up to 0.19 m ² · s · Pa / μg. When examined based on this evaluation, as shown in Table 2, moisture permeability was recognized in Examples 1 to 3 and Comparative Examples 2 and 3.
On the other hand, the reason why the moisture permeability was 0.50 m ² · s · Pa / μg in Comparative Example 1 was that a heat ray reflective layer was formed on the base sheet before laminating the base sheet and the reinforcing sheet. Thus, it is conceivable that the concealment rate has reached 100%. In addition, the moisture permeability of the comparative example 2 which obtained the heat-insulation moisture-permeable waterproof sheet by the method similar to the comparative example 1 was set to 0.15 m < ² > s * Pa / microgram, and the reason why moisture permeability was acquired is a comparative example In No. 2, it is considered that the amount of ink applied when the heat ray reflective layer was formed by a coating method was as small as 0.5 ± 0.1 g / m ² .
Moreover, since the thickness of a heat ray reflective layer can be formed thinly when the heat ray reflective layer was formed by the vacuum evaporation method from the result of the comparative example 3, the heat ray reflective layer is formed in the whole surface of a base material sheet. Even if it is, it turns out that desired moisture permeability is recognized. As a result, the reason why the moisture permeability in Comparative Example 4 was 0.20 m ² · s · Pa / μg may be that a protective layer was further provided on the surface opposite to the base sheet of the heat ray reflective layer. .

(2) Heat-shielding properties Example 2 and Comparative Example 1 in which the coating amount when forming the heat ray reflective layer by the coating method were the same. As a result, in Example 2, the concealment rate of the heat ray reflective layer in the base material sheet was 70%, and the reflectivity at a wavelength of 10 μm was 45%. On the other hand, in Comparative Example 1, the concealment rate of the heat ray reflective layer in the base material sheet was 100%, and the reflectivity at a wavelength of 10 μm was 60%. From this, it was found that when the coating amount is the same, the reflectance also increases as the concealment rate increases. When the heat ray reflective layer is formed by a coating method, the thickness of the heat ray reflective layer increases with an increase in the amount of ink that constitutes the heat ray reflective layer, and as a result, the reflectance is expected to increase. Is done.

(3) Moist heat resistance In Examples 1 to 3 and Comparative Examples 1 and 2, the heat ray reflective layer has metal particles and a resin component. Specifically, the heat ray reflective layers in Examples 1 to 3 and Comparative Examples 1 and 2 are in a state where the metal particles are dispersed in the resin component and the metal particles are covered with the resin component. Therefore, in Examples 1 to 3 and Comparative Examples 1 and 2, oxidation of metal particles contained in the heat ray reflective layer could be suppressed. Moreover, in the comparative example 4, although the heat ray reflective layer is a vapor deposition film formed by the vacuum vapor deposition method, the base material sheet of the heat ray reflective layer has a protective layer on the opposite surface. For this reason, in Comparative Example 4, oxidation of the heat ray reflective layer could be suppressed by the protective layer. On the other hand, in Comparative Example 3, the heat ray reflective layer is a vapor deposition film formed by a vacuum vapor deposition method, and the heat ray reflective layer is exposed. For this reason, in Comparative Example 3, the heat ray reflective layer was whitened by oxidation, and the desired wet heat resistance was not obtained.

[Example 4]
As a wood base material, a structural load bearing material particle board (width 998 mm, length 2440 mm, thickness 9 mm, “Novopan STPII” manufactured by Nippon Novopan Kogyo Co., Ltd.) was prepared.

  Next, the obtained wood base material and the heat-insulating and moisture-permeable waterproof sheet obtained in Example 1 were laminated and fixed with an adhesive. Thus, the laminated body for building materials with which the wooden base material and the heat-insulation moisture-permeable waterproof sheet were laminated | stacked through the contact bonding layer was obtained. In addition, the ratio of the area in planar view in which the contact bonding layer was arrange | positioned was 30% with respect to the area where a wooden base material and a heat insulation moisture-permeable waterproof sheet overlap in planar view.

[Example 5]
After laminating the wooden substrate and the heat-permeable and moisture-permeable waterproof sheet without using an adhesive, the tacker needle was driven in from the surface of the heat- and moisture-permeable and moisture-proof sheet to fix the wooden substrate and the heat- and moisture-permeable and waterproof sheet. Except for this, a building material laminate was obtained in the same manner as in Example 4. The number of tucker needles was 20 per 1 m ^{2 of the} area where the wooden base material and the heat-insulating and moisture-permeable waterproof sheet overlap in plan view.

[Example 6]
In the same manner as in Examples 4 and 5, a wooden substrate and a heat-permeable and moisture-permeable waterproof sheet were prepared.

[Evaluation]
Using the laminates for building materials obtained in Examples 4 and 5 as the frame structure of the frame wall method (2 × 4 method), a two-story wooden house with a floor area of 100 square meters (first floor 60 m ² + ^second floor 40 m ² ) Built. Moreover, after laminating a heat-permeable and moisture-permeable waterproof sheet on the surface of the wooden base material prepared in Example 6, the laminate is used as a frame structure of a frame wall construction method (2 × 4 method), and has a floor area of 100 square meters. A two-story wooden house (1st floor 60m ² + ^2nd floor 40m ² ) was constructed.

  As a result, in Examples 4 and 5, the use of the building material laminate in which the heat-permeable and moisture-permeable waterproof sheet was previously laminated on the surface of the wooden base material, the work could be proceeded satisfactorily. On the other hand, in Example 6, it was necessary to laminate | stack a wooden base material and a heat-permeable moisture-permeable waterproof sheet in a work site, and the operation | work was delayed compared with Examples 4 and 5. Moreover, in Example 6, since the wooden substrate was wetted by rain, the thermal barrier moisture-permeable waterproof sheet was laminated after waiting for the wooden substrate to dry. 4 days later than 5.

DESCRIPTION OF SYMBOLS 1 ... Reinforcement sheet 2 ... Base material sheet 3 ... Heat ray reflective layer 4 ... Protective layer 5 ... Wood base material 6 ... Adhesive layer 7 ... Tucker needle 10 ... Thermal insulation moisture permeable waterproof sheet 20 ... Laminate for building materials

Claims (6)

It has a reinforcing sheet, a base sheet, and a heat ray reflective layer in this order,
The reinforcing sheet is a fabric,
The concealment rate by the heat ray reflective layer of the substrate sheet is 50% or more and 90% or less,
The said heat ray reflective layer is a heat-insulation moisture-permeable waterproof sheet containing a metal particle and a resin component.   The heat-insulating and moisture-permeable waterproof sheet according to claim 1, wherein the reinforcing sheet is a fiber-orthogonal nonwoven fabric containing a polyolefin-based resin. The base sheet has a concave portion and a convex portion on a surface opposite to the reinforcing sheet,
The heat insulation moisture-permeable waterproof sheet according to claim 1 or 2 with which said convex part and said heat ray reflective layer overlap in plane view.   The heat-insulating and moisture-permeable waterproof sheet according to any one of claims 1 to 3, wherein the reflectance at a wavelength of 10 µm is 30% or more.   The heat-insulation and moisture-permeable waterproof sheet according to any one of claims 1 to 4, wherein the base sheet is a porous sheet containing a polyolefin resin. A wooden substrate;
The heat-insulating and moisture-permeable waterproof sheet according to any one of claims 1 to 5, on one surface side of the wooden substrate,
A laminate for building materials.