WO2016027799A1 - Roofing underlay with pressure-sensitive adhesive layer - Google Patents

Roofing underlay with pressure-sensitive adhesive layer Download PDF

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Publication number
WO2016027799A1
WO2016027799A1 PCT/JP2015/073109 JP2015073109W WO2016027799A1 WO 2016027799 A1 WO2016027799 A1 WO 2016027799A1 JP 2015073109 W JP2015073109 W JP 2015073109W WO 2016027799 A1 WO2016027799 A1 WO 2016027799A1
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adhesive layer
roof
layer
waterproof film
adhesive
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PCT/JP2015/073109
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French (fr)
Japanese (ja)
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雅貴 出口
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セーレン株式会社
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Priority to JP2016544213A priority Critical patent/JP6789816B2/en
Publication of WO2016027799A1 publication Critical patent/WO2016027799A1/en

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D12/00—Non-structural supports for roofing materials, e.g. battens, boards

Definitions

  • roof roofing materials have been used on the roofs of houses as base waterproof sheets for roofing materials such as tiles, slate, and sheet metal.
  • An important performance required for roofing materials is a waterproofing effect to prevent rainwater from entering indoors.
  • roofing materials As specific examples of roofing materials that have been used conventionally, there are mainly asphalt felts and rubber-modified asphalt felts. These are roof coverings made by impregnating non-woven fabric or paper with asphalt or rubber-modified asphalt. There is also a roof covering material that uses synthetic polymer sheets to prevent water from entering the room. In order to fix these under-floor timbers to the field board, countless nailing is required over the entire surface of the sheet. For this reason, in the conventional roof underlaying material, there has been a problem of water leakage from the nail hole depending on the performance of the sheet, the construction situation, and the environment.
  • the roof underlaying material in order to fix the roof underlaying material to the base plate, a material in which an adhesive layer is provided on the back surface of the roof underlaying has been proposed. Even when nailing is performed, the roof underlaying material has an effect of preventing water leakage from the nail hole by the adhesive layer being entangled with the nail.
  • Patent Document 2 discloses an underlayer roofing material with an adhesive layer in which a plastic film, a nonwoven fabric sheet, a layer made of rubber asphalt or butyl rubber, a rubber-based material-impregnated nonwoven fabric sheet, and an adhesive layer are laminated.
  • a plastic film a nonwoven fabric sheet
  • a layer made of rubber asphalt or butyl rubber a rubber-based material-impregnated nonwoven fabric sheet
  • an adhesive layer a plastic film, a nonwoven fabric sheet, a layer made of rubber asphalt or butyl rubber, a rubber-based material-impregnated nonwoven fabric sheet, and an adhesive layer are laminated.
  • the unevenness of the non-woven fabric sheet affects the surface of the lower glazing material and sufficient adhesion cannot be obtained at the portion where the lower glazing material overlaps when it is laminated.
  • Patent Document 3 discloses a roof underfloor material with an adhesive layer made of a laminate having an anti-slip nonwoven fabric, a moisture-permeable waterproof layer, and an adhesive layer.
  • the nonwoven fabric is the main constituent, there is a problem that it is difficult to obtain elasticity, and that the construction is difficult, such that the adhesive layers cannot be used after being adhered to each other during construction.
  • it is difficult to prevent water leaking from the nail hole only with the nonwoven fabric, and in addition, since there is a portion where the adhesive layer is not formed to ensure moisture permeability, water leakage from the nail hole is easy and sufficient adhesive strength is provided. It is difficult to demonstrate.
  • the non-slip non-woven fabric is provided on the surface side, there is a possibility that sufficient adhesion cannot be obtained in the overlapped portion of the overlapping.
  • JP 2002-70250 A Japanese Patent Laid-Open No. 11-280212 JP 2005-113678 A
  • the present invention solves the above-mentioned problems, and provides an underlayer roofing material with an adhesive layer that can sufficiently exhibit adhesiveness, and also has anti-slip properties, workability, and waterproof properties of nail holes and overlapping portions.
  • the purpose is to do.
  • the particle body is preferably at least one particle body selected from the group consisting of inorganic powders and thermally expandable microcapsules, and the particle diameter is preferably 10 to 200 ⁇ m.
  • the wetting tension of the anti-slip layer is preferably 40 mN / m or more.
  • the bending resistance is preferably 70 or more in both the longitudinal direction and the width direction.
  • the difference between the adhesive strength of the adhesive layer to the base plate and the adhesive strength to the back surface is preferably 10 N / 25 mm or less.
  • a roof underlaying material with an adhesive layer that is excellent in adhesiveness, anti-slip property, waterproofness of nail holes and overlapping portions, and workability.
  • the present invention has a waterproof film layer on both sides of a reinforcing sheet, and when installed on a roof base plate, an anti-slip layer containing an adhesion regulator and a particle is laminated on the upper waterproof film layer in the vertical direction.
  • an adhesive layer-attached roof underfloor material in which an adhesive layer containing a synthetic rubber and a tackifier is laminated on the lower surface of the waterproof film layer on the lower side in the vertical direction.
  • the outermost layer on the substantially upper side in the vertical direction is an anti-slip layer containing an adhesion regulator and particles
  • the lower layer of the anti-slip layer has a reinforcing sheet having a waterproof layer made of a film on both sides, and further below It is the roof underlaying material with the adhesion layer of the multilayer structure which has an adhesion layer.
  • the roof underlaying material 1 with the pressure-sensitive adhesive layer is a reinforcing sheet having waterproof film layers 5 on both sides under a non-slip layer 4 containing a pressure-adjusting agent 2 and particle bodies 3.
  • 6 is a laminate in which an adhesive layer 7 and a release sheet 8 are provided thereunder.
  • adhesion adjusting agent 2 examples include agents that impart appropriate adhesion to the anti-slip layer 4, and specifically, modified polyolefin-based, polyurethane-based, acrylic-based, epoxy-based, vinyl acetate-based, polyester-based, and polyvinyl alcohol. And at least one resin selected from the group consisting of a series, a cellulose series, a phenol series, and a melamine series.
  • polar resins such as polyester, nylon, and acryl
  • nonpolar resins such as polyethylene and polypropylene can be used.
  • a resin mainly composed of a modified polyolefin series having high adhesion is preferable because it is easy to exhibit waterproofness.
  • the particle body 3 is at least one particle body selected from the group consisting of polymer powder, inorganic powder, and thermally expandable microcapsules.
  • inorganic powders and / or thermally expandable microcapsules are preferable because fine irregularities are formed on the entire surface of the roof underfloor with the adhesive layer, the friction coefficient is increased, and slip resistance is imparted.
  • polystyrene resin examples include polypropylene, urethane, nylon, and Teflon (registered trademark). Among these, a polypropylene type having good processability is preferable.
  • the particle diameter is preferably 10 to 200 ⁇ m. If it is 10 ⁇ m or more, the anti-slip property is improved by the fine irregularities on the surface. Moreover, the fall of the adhesiveness of the overlap part can be suppressed as it is 200 micrometers or less.
  • the inorganic powder is preferably an inorganic powder having a three-dimensional irregular shape such as a wedge shape, a cone shape, or a polygonal pyramid shape.
  • a three-dimensional irregular shape such as a wedge shape, a cone shape, or a polygonal pyramid shape.
  • Specific examples include silica, calcium carbonate, titanium oxide, zinc oxide, and magnesium carbonate. Of these, zinc oxide, which has good dispersibility and chemical resistance, is preferable.
  • the particle diameter is preferably 10 to 200 ⁇ m. If it is 10 ⁇ m or more, the anti-slip property is improved by the fine irregularities on the surface. Moreover, the fall of the adhesiveness of the overlap part can be suppressed as it is 200 micrometers or less.
  • the thermally expandable microcapsule is a microcapsule encapsulating a gas such as hydrocarbon, and therefore has a heat insulating effect and is preferably used in order to improve the heat shielding property.
  • a particle size of 5 to 20 ⁇ m is preferable in terms of slip resistance and wear resistance.
  • the expansion ratio is preferably 2 to 10 times. Within this range, slip resistance and wear resistance can be improved.
  • the particle diameter after foaming that is, the particle diameter of the thermally expandable microcapsule of the produced roof underfloor material with an adhesive layer is preferably 10 to 200 ⁇ m. When the thickness is 10 ⁇ m or more, the anti-slip property and the wear resistance are improved by the fine irregularities on the surface.
  • the addition amount of the particles 3 is preferably 2 to 40 parts by weight with respect to 100 parts by weight of the tackifier. If it is 2 parts by weight or more, irregularities can be formed on the entire surface by the particle body, and anti-slip properties are improved. If it is 40 parts by weight or less, dropping of the particle body is suppressed.
  • the anti-slip layer 4 may be added with known antioxidants, ultraviolet absorbers, flame retardants, color pigments and the like.
  • a metal powder having a radiation heat reflecting effect such as aluminum, nickel, stainless steel, silver, or chromium is added to the anti-slip layer 4, the heat shielding property can be improved.
  • the adhesive strength between the anti-slip layer 4 and the adhesive layer 7, that is, the self-rear adhesive strength of the roof underlaying material with the adhesive layer is preferably 9 N / 25 mm or more, and more preferably 10 N / 25 mm or more. If it is 9 N / 25 mm or more, the adhesiveness of the overlapped portion is good and waterproofness can be exhibited. Moreover, it is preferable that it is 3N / 25mm or more, and, as for the adhesive force of the adhesion layer 7 and a field plate, it is more preferable that it is 10N / 25mm or more. If it is 3N / 25mm or more, the adhesiveness of the overlapping part is good and waterproofness can be exhibited.
  • the difference between the adhesive strength of the adhesive layer 7 to the base plate and the self-back adhesive strength is preferably 10 N / 25 mm or less, and more preferably 4 N / 25 mm or less. If it is 10 N / 25 mm or less, the overlapping portion and the portion other than the overlapping portion (the portion attached to the plywood) are less likely to be warped or lifted, maintain good adhesion, and are waterproof over a long period of time. Persists.
  • the wetting tension of the anti-slip layer 4 is preferably 40 mN / m or more, and more preferably 45 mN / m or more. If it is 40 mN / m or more, the affinity with the pressure-sensitive adhesive layer is good and the adhesiveness of the overlapped portion can be improved.
  • the formation of the anti-slip layer 4 is performed by a known coating method such as a roll coating method, a gravure coating method, or a reverse coating method.
  • the thickness of the anti-slip layer after drying is preferably 30 to 300 ⁇ m. In the case of 30 ⁇ m or more, drop off of the particle body can be suppressed and sufficient adhesion can be obtained. Moreover, if it is 300 micrometers or less, embedding of a particle body will be suppressed and anti-slip property will be acquired. Furthermore, since it is lightweight, workability is also improved.
  • the material for forming the waterproof film layer 5 is specifically at least one resin selected from the group consisting of polyolefins such as polyethylene and polypropylene, polyesters, polyamides, and polyurethanes. Of these, polyolefins are preferred from the viewpoints of processability, strength, economy, and hydrophobicity.
  • the waterproof strength of the waterproof film layer 5 is preferably 10 MPa or more in the longitudinal direction and 10 MPa or more in the width direction. With these strengths, tearing and tearing can be reduced during construction.
  • the thickness of the waterproof film layer 5 is preferably in the range of 20 to 200 ⁇ m. If it is 20 ⁇ m or more, sufficient strength can be obtained. Moreover, if it is 200 micrometers or less, a lightweight feeling will be acquired and construction property will improve.
  • the manufacturing flow direction of the film manufactured continuously be a longitudinal direction, and let a perpendicular direction with respect to a manufacturing flow be the width direction.
  • the manufacturing method of the waterproof film layer 5 is not specifically limited, It can form into a film by well-known manufacturing methods, such as the inflation method, the extrusion lamination method, and the casting method.
  • the waterproof film layer 5 may be formed on the reinforcing sheet 6 by an extrusion laminating method in which the molten resin is cooled and formed into a sheet while being formed into a sheet.
  • the upper waterproof film layer 5 is preferably formed by an inflation method, an extrusion laminating method, or a casting method that facilitates forming a uniform film. Films obtained by these production methods tend to stably exhibit strength, waterproofness and surface smoothness.
  • the waterproof film layer 5 can be subjected to surface modification such as ultraviolet treatment, plasma treatment and corona treatment in order to further improve the adhesion to the anti-slip layer 4 and the adhesive layer 7.
  • the waterproof film layer 5 can be added with known antioxidants, ultraviolet absorbers, flame retardants, color pigments, and the like.
  • the reinforcing sheet 6 only needs to be able to reinforce and support the waterproof film layer 5, and specific examples thereof include a nonwoven fabric, a woven fabric, a knitted fabric, and a film.
  • non-woven fabrics are preferable from the viewpoints of cost, productivity, and strength.
  • the nonwoven fabric preferably has a tensile strength of 25 N / cm or more in the longitudinal direction, 20 N / cm or more in the width direction, a tear strength of 10 N or more in the longitudinal direction, and 8 N or more in the width direction. If these strengths are satisfied, tearing and tearing during construction can be reduced.
  • the basis weight of the nonwoven fabric is preferably 60 to 300 g / m 2 .
  • the material of the nonwoven fabric is not particularly limited, and specifically, at least selected from the group consisting of polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate and polymethylene terephthalate, and polyamides such as nylon and aramid.
  • a polymer material composed of one kind of material can be mentioned. Of these, polyesters are preferred from the viewpoints of elasticity, processability, strength, and dimensional stability.
  • the manufacturing method of the said nonwoven fabric is not specifically limited, Well-known manufacturing methods, such as the spun bond method, the melt blow method, the thermal bond method, the chemical bond method, and the needle punch method, can be used.
  • the reinforcing sheet 6 can be added with known antioxidants, ultraviolet absorbers, flame retardants, color pigments and the like.
  • Examples include a wet laminating method in which the two are bonded together and then dried, an extrusion laminating method in which the resin is melted by heat and bonded while being molded into a sheet or thread shape, and cooled to form an adhesive layer, and a hot melt laminating method.
  • a known laminating method such as thermal lamination in which the waterproof film layer and the reinforcing sheet are fused by heat is used.
  • the thickness of the adhesive layer is preferably 5 to 100 ⁇ m. In the case of 5 ⁇ m or more, sufficient adhesive force can be obtained.
  • it since it is lightweight if it is 100 micrometers or less, workability
  • a synthetic rubber that is less affected by temperature and hardly influenced by the polarity of the adherend is used.
  • Specific examples include butyl rubber, isoprene rubber, styrene butadiene rubber, polyisobutylene, chloroprene rubber, nitrile rubber, and graft rubber.
  • a butyl rubber system excellent in waterproofness, weather resistance, heat resistance, chemical resistance, and adhesion to metal is preferable.
  • a tackifier is added to at least one synthetic rubber selected from these groups to form a pressure-sensitive adhesive layer.
  • the adhesive layer 7 can be added with known antioxidants, ultraviolet absorbers, flame retardants, color pigments and the like.
  • the thickness of the adhesive layer 7 is preferably 100 to 500 ⁇ m. If it is 100 micrometers or more, sufficient adhesive force and the waterproofness of a nail hole can be acquired. Moreover, if it is 500 micrometers or less, since a light feeling can be obtained and the adhesion
  • a release sheet 8 can be provided on the surface of the adhesive layer 7. Although it does not specifically limit as the release sheet 8, From the economical surface, what coated the release agent on papermaking paper etc. are used preferably.
  • the weight is preferably 50 to 150 g / m 2 . Since it is easy to maintain strength if it is 50 g / m 2 or more, it is difficult to tear when peeled off from the adhesive layer 7. Moreover, if it is 150 g / m ⁇ 2 > or less, since it is lightweight, workability
  • the following examples and comparative examples will specifically describe the roof underlaying material with an adhesive layer of the present invention, but the present invention is not limited thereto.
  • the roof underlaying materials with adhesive layers of Examples 1 to 5 according to the present invention were manufactured, and their physical properties were measured.
  • or the comparative example 4 was manufactured for the comparison, and the physical property was measured.
  • Each physical property in Examples and Comparative Examples was measured and evaluated by the following methods.
  • the difference between the adhesive force to the plywood and the adhesive force to the back surface is 10 N / 25 mm or less
  • the overlapped portion and the portion other than the overlapped portion are both warped and lifted. It is hard to occur, it can be evaluated that good adhesion is maintained and the waterproofness of the overlapped portion is excellent.
  • N 10 and measured the average water reduction height after 24 hours. 4 mm or less was evaluated as being excellent in water-stopping property.
  • (2) -3 After heat treatment In a heating high-temperature vessel at 80 ° C., the roof underlaying material with adhesive layer and the plywood were cured for 24 hours or more, and the nail hole water resistance was measured at room temperature.
  • Example 1 On one side of the polyester nonwoven fabric (made by Shinryo Co., Ltd., weight per unit: 100 g / m 2 spunbond) constituting the reinforcing sheet 6, a polyethylene film (made by Hayashi Koji Co., Ltd., thickness 40 ⁇ m) is formed by an extrusion lamination method.
  • Polyethylene resin Perosen (registered trademark) 212, manufactured by Tosoh Corporation
  • a polyethylene resin (Perotosen (registered trademark) 212, manufactured by Tosoh Corporation) is extruded with a thickness of 50 ⁇ m on the surface opposite to the surface on which the polyethylene film is laminated by the extrusion laminating method, and the lower layer side (vertical lower side during construction) The waterproof film layer 5 was formed.
  • acrylic heat-expandable microcapsules particles 3 (100 parts by weight of modified polyolefin resin (Sakai Chemical Industry Co., Ltd., U-Ply (registered trademark) P-3963), which is the adhesion modifier 2, A resin composition to which 20 parts by weight of Microsphere F-30 manufactured by Matsumoto Yushi Seiyaku Co., Ltd., particle size: 14 ⁇ m) is added is formed on the waterproof film layer 5 on the upper layer side to a thickness of 25 ⁇ m by a gravure coater. Thus, the anti-slip layer 4 was formed.
  • modified polyolefin resin Sakai Chemical Industry Co., Ltd., U-Ply (registered trademark) P-3963
  • the anti-slip layer 4 was formed.
  • an adhesive obtained by mixing a tackifier with butyl rubber on the surface of the waterproof film layer 5 opposite to the surface on which the anti-slip layer 4 is formed is 200 ⁇ m thick by a calendar coating method.
  • a release sheet 8 manufactured by Oji Specialty Paper Co., Ltd., separate 70 KPS was temporarily bonded to obtain an underlayer roofing material 1 with an adhesive layer.
  • the total weight was 711 g / m 2 and the total thickness was 743 ⁇ m. It was 48 mN / m when the wetting tension on the surface of the anti-slip layer 4 was measured according to JIS K6768.
  • the physical property values and evaluation results of the roof underlaying material 1 with the adhesive layer are shown in Table 1.
  • Example 2 The adhesive layer 7 was processed in the same manner as in Example 1 except that the thickness was changed to 120 ⁇ m.
  • Table 1 shows the physical property values and evaluation results of the roof underlay material 1 with an adhesive layer.
  • Example 3 Except having changed the adhesion layer 7 into 480 micrometers thickness, it processed like Example 1 and obtained the roof underlaying material 1 with an adhesion layer. Table 1 shows the physical property values and evaluation results of the roof underlay material 1 with an adhesive layer.
  • Example 4 The particle body 3 was processed in the same manner as in Example 1 except that the particle body 3 was changed to a zinc oxide filler (manufactured by Amtec Co., Ltd., Panatetra (registered trademark) WZ-0511L: particle size 20 ⁇ m). A firewood 1 was obtained. Table 1 shows the physical property values and evaluation results of the roof underlay material 1 with an adhesive layer.
  • a zinc oxide filler manufactured by Amtec Co., Ltd., Panatetra (registered trademark) WZ-0511L: particle size 20 ⁇ m.
  • Example 5 Except that the waterproof film layer 5 and the reinforcing sheet 6 on the upper layer side were laminated by the thermal lamination method without forming the adhesive layer, the roof underlaying material 1 with the adhesive layer was obtained in the same manner as in Example 1. Table 1 shows the physical property values and evaluation results of the roof underlay material 1 with an adhesive layer.
  • Example 2 Except that the anti-slip layer 4 was not formed, it was processed in the same manner as in Example 1 to obtain a roof underlaying material with an adhesive layer.
  • Table 1 shows the physical properties and evaluation results of the roof underlaying material with an adhesive layer.
  • Example 3 Except that the upper waterproof film layer 5 was not formed and the anti-slip layer 4 was formed on the surface of the reinforcing sheet 6, processing was carried out in the same manner as in Example 1 to obtain a roof underlaying material with an adhesive layer.
  • Table 1 shows the physical properties and evaluation results of the roof underlaying material with an adhesive layer.
  • Example 4 It processed like Example 1 except not having formed the waterproof film layer 5 of the lower layer side, and obtained the roof underlaying material with the adhesion layer.
  • Table 1 shows the physical properties and evaluation results of the roof underlaying material with an adhesive layer.
  • the roof underlaying materials with adhesive layers of Examples 1 to 5 according to the present invention are all excellent in balance with respect to the physical properties of adhesive strength, nail hole waterproofing, overlapped partial adhesion, and elasticity. there were. Moreover, since the static friction coefficient is more than a certain value, it is difficult to slip when a person walks on the roof, and the safety is high. On the other hand, the roof underlaying materials with the adhesive layer of Comparative Examples 1 to 4 were individually excellent in each of the above physical properties, but none of them were excellent in all balances, and practically There was a problem.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)

Abstract

Provided is a roofing underlay with a pressure-sensitive adhesive layer, the roofing underlay being capable of sufficiently exhibiting tackiness and combining antislip properties, workability, and waterproof properties of nail holes and overlaps. The roofing underlay with a pressure-sensitive adhesive layer comprises: a reinforcement sheet (6); waterproof film layers (5) disposed respectively on both surfaces thereof; an antislip layer (4) comprising a tack improver (2) and particles (3) and superposed on the surface of the waterproof film layer (5) which faces upward along the vertical direction after the roofing underlay is laid on the roof base boards; and a pressure-sensitive adhesive layer (7) comprising a synthetic rubber and a tackifier and superposed on the lower surface of the waterproof film layer (5) which faces downward along the vertical direction.

Description

粘着層付屋根下葺材Roof underfloor with adhesive layer
　本発明は、屋根下葺材に関するものであり、さらに詳しくは、防滑性、防水性、粘着性、施工性に優れる粘着層付屋根下葺材に関する。 The present invention relates to a roof underlaying material, and more particularly to a roof underlaying material with an adhesive layer excellent in slip resistance, waterproofness, adhesiveness, and workability.
　従来、家屋の屋根には、屋根材である瓦、スレート、板金等の下地防水シートとして、屋根下葺材が使用されている。屋根下葺材に要求される重要な性能として、雨水が屋内に進入することを防ぐための防水効果が挙げられる。 Conventionally, roof roofing materials have been used on the roofs of houses as base waterproof sheets for roofing materials such as tiles, slate, and sheet metal. An important performance required for roofing materials is a waterproofing effect to prevent rainwater from entering indoors.
　従来使用されてきた屋根下葺材の具体例として、主にアスファルト系フェルト、ゴム改質アスファルト系フェルトがある。これらは、不織布や紙にアスファルトまたはゴム改質アスファルトを含浸させてなる屋根下葺材である。また、合成高分子系のシートを使用して屋内への水の侵入を防ぐ屋根下葺材もある。これらの屋根下葺材は、野地板に固定するため、シート全面にわたって、無数の釘打ちが必要である。このため、従来の屋根下葺材では、シートの性能、施工状況、環境次第で釘穴から漏水する問題が生じていた。 As specific examples of roofing materials that have been used conventionally, there are mainly asphalt felts and rubber-modified asphalt felts. These are roof coverings made by impregnating non-woven fabric or paper with asphalt or rubber-modified asphalt. There is also a roof covering material that uses synthetic polymer sheets to prevent water from entering the room. In order to fix these under-floor timbers to the field board, countless nailing is required over the entire surface of the sheet. For this reason, in the conventional roof underlaying material, there has been a problem of water leakage from the nail hole depending on the performance of the sheet, the construction situation, and the environment.
　一方、野地板に屋根下葺材を固定するため、屋根下葺材の裏面に粘着層を設けたものが提案されている。この屋根下葺材は、釘打ちを行った場合でも、釘に粘着層が絡み付くことで釘穴からの漏水を防ぐ効果がある。 On the other hand, in order to fix the roof underlaying material to the base plate, a material in which an adhesive layer is provided on the back surface of the roof underlaying has been proposed. Even when nailing is performed, the roof underlaying material has an effect of preventing water leakage from the nail hole by the adhesive layer being entangled with the nail.
　例えば、特許文献１には、粘着層、不織布や紙にアスファルトを含浸させた層、アスファルト層、鉱物粉粒層で構成されている粘着層付屋根下葺材が開示されている。
　しかし、アスファルトを使用しているため重く、粘着層は温度影響を受け易い。また、表面側のアスファルト層上に鉱物粉粒層があるため、表面が粗く、熱や雨で鉱物粉粒が浮上し滑り易くなる。また、防水の面から、下葺材の長手方向や幅方向の端部を重ねることがあり、さらに、棟部、谷部では二重貼りすることがあるが、下葺材が重なると、鉱物粉粒が影響し充分な密着性が得られないおそれがある。 For example, Patent Document 1 discloses an adhesive layer-attached roof underlay material composed of an adhesive layer, a layer in which nonwoven fabric or paper is impregnated with asphalt, an asphalt layer, and a mineral particle layer.
However, since asphalt is used, it is heavy and the adhesive layer is easily affected by temperature. In addition, since the mineral powder layer is on the asphalt layer on the surface side, the surface is rough, and the mineral powder particles are floated by heat and rain and become slippery. In addition, from the waterproof surface, the longitudinal and width ends of the lower brace material may be overlapped, and in addition, the ridges and troughs may be double-laminated. May affect the adhesiveness.
　特許文献２には、プラスチックフィルム、不織布シート、ゴムアスファルトまたはブチルゴムからなる層、ゴム系物質含浸不織布シート、接着剤層が積層された粘着層付屋根下葺材が開示されている。
　しかし、重ね貼りした際に下葺材が重なった部分において、不織布シートの凹凸が下葺材表面に影響し充分な密着性が得られないおそれがある。 Patent Document 2 discloses an underlayer roofing material with an adhesive layer in which a plastic film, a nonwoven fabric sheet, a layer made of rubber asphalt or butyl rubber, a rubber-based material-impregnated nonwoven fabric sheet, and an adhesive layer are laminated.
However, there is a possibility that the unevenness of the non-woven fabric sheet affects the surface of the lower glazing material and sufficient adhesion cannot be obtained at the portion where the lower glazing material overlaps when it is laminated.
　特許文献３には、防滑不織布と透湿防水層と接着層とを有する積層体からなる粘着層付屋根下葺材が開示されている。
　しかし、不織布を主な構成体としているため、ハリコシが得られ難く、施工時に接着層どうしが接着して使用できなくなる等、施工が難しいという問題があった。また、不織布のみでは釘穴からの漏水を防ぎ難く、加えて、透湿性を確保するために粘着層が形成されていない部分を設けているため、釘穴から漏水し易く、かつ充分な粘着力を発揮し難い。さらに、表面側に防滑不織布を設けているため、重ね貼りの重ね部分において、充分な密着性が得られないおそれがある。 Patent Document 3 discloses a roof underfloor material with an adhesive layer made of a laminate having an anti-slip nonwoven fabric, a moisture-permeable waterproof layer, and an adhesive layer.
However, since the nonwoven fabric is the main constituent, there is a problem that it is difficult to obtain elasticity, and that the construction is difficult, such that the adhesive layers cannot be used after being adhered to each other during construction. In addition, it is difficult to prevent water leaking from the nail hole only with the nonwoven fabric, and in addition, since there is a portion where the adhesive layer is not formed to ensure moisture permeability, water leakage from the nail hole is easy and sufficient adhesive strength is provided. It is difficult to demonstrate. Furthermore, since the non-slip non-woven fabric is provided on the surface side, there is a possibility that sufficient adhesion cannot be obtained in the overlapped portion of the overlapping.
特開２００２－７０２５０号公報JP 2002-70250 A 特開平１１－２８０２１２号公報Japanese Patent Laid-Open No. 11-280212 特開２００５－１１３６７８号公報JP 2005-113678 A
　本発明は、前述の問題を解決するものであり、充分に粘着性を発揮でき、且つ防滑性、施工性、さらには釘穴や重ね部分の防水性も兼ね備えた粘着層付屋根下葺材を提供することを目的とする。 The present invention solves the above-mentioned problems, and provides an underlayer roofing material with an adhesive layer that can sufficiently exhibit adhesiveness, and also has anti-slip properties, workability, and waterproof properties of nail holes and overlapping portions. The purpose is to do.
　すなわち、本発明にかかる粘着層付屋根下葺材の特徴構成は、補強シートの両面に防水フィルム層を有し、屋根の野地板に設置したとき、鉛直方向の上側の防水フィルム層上面には、粘着調整剤および粒子体を含有する防滑層が積層されており、鉛直方向の下側の防水フィルム層下面には、合成ゴムおよび粘着付与剤を含有する粘着層が積層されていることにある。 That is, the characteristic configuration of the roof underlaying material with an adhesive layer according to the present invention has a waterproof film layer on both sides of the reinforcing sheet, and when installed on the roof base plate, on the upper surface of the upper waterproof film layer in the vertical direction, An anti-slip layer containing an adhesion regulator and particles is laminated, and an adhesive layer containing a synthetic rubber and a tackifier is laminated on the lower surface of the waterproof film layer on the lower side in the vertical direction.
　前記補強シートが、不織布であることが好ましい。 The reinforcing sheet is preferably a nonwoven fabric.
　前記粒子体が、無機系粉末および熱膨張性マイクロカプセルからなる群から選択される少なくとも１つの粒子体であり、粒子径が１０～２００μｍであることが好ましい。 The particle body is preferably at least one particle body selected from the group consisting of inorganic powders and thermally expandable microcapsules, and the particle diameter is preferably 10 to 200 μm.
　前記防滑層のぬれ張力が、４０ｍＮ／ｍ以上であることが好ましい。 The wetting tension of the anti-slip layer is preferably 40 mN / m or more.
　剛軟度が、長手方向、幅方向共に７０以上であることが好ましい。 The bending resistance is preferably 70 or more in both the longitudinal direction and the width direction.
　前記粘着層の前記野地板に対する粘着力と自背面に対する粘着力との差が、１０Ｎ／２５ｍｍ以下であることが好ましい。 The difference between the adhesive strength of the adhesive layer to the base plate and the adhesive strength to the back surface is preferably 10 N / 25 mm or less.
　本発明によれば、粘着性、防滑性、釘穴や重ね部分の防水性、施工性に優れた粘着層付屋根下葺材を提供することができる。 According to the present invention, it is possible to provide a roof underlaying material with an adhesive layer that is excellent in adhesiveness, anti-slip property, waterproofness of nail holes and overlapping portions, and workability.
本発明の粘着層付屋根下葺材の一例を示す断面模式図である。It is a cross-sectional schematic diagram which shows an example of the roof underlaying material with the adhesion layer of this invention. 重ね部分密着性試験の断面説明図である。It is a section explanatory view of an overlap partial adhesion test.
　本発明は、補強シートの両面に防水フィルム層を有し、屋根の野地板に設置したとき、鉛直方向の上側の防水フィルム層上面には、粘着調整剤および粒子体を含有する防滑層が積層されており、鉛直方向の下側の防水フィルム層下面には、合成ゴムおよび粘着付与剤を含有する粘着層が積層されている粘着層付屋根下葺材である。すなわち、鉛直方向の略上側の最外層が粘着調整剤及び粒子体を含有する防滑層であり、防滑層の下層にはフィルムからなる防水層を両面に有する補強シートを有し、更にその下層に粘着層を有する多層構造の粘着層付屋根下葺材である。 The present invention has a waterproof film layer on both sides of a reinforcing sheet, and when installed on a roof base plate, an anti-slip layer containing an adhesion regulator and a particle is laminated on the upper waterproof film layer in the vertical direction. In addition, an adhesive layer-attached roof underfloor material in which an adhesive layer containing a synthetic rubber and a tackifier is laminated on the lower surface of the waterproof film layer on the lower side in the vertical direction. That is, the outermost layer on the substantially upper side in the vertical direction is an anti-slip layer containing an adhesion regulator and particles, and the lower layer of the anti-slip layer has a reinforcing sheet having a waterproof layer made of a film on both sides, and further below It is the roof underlaying material with the adhesion layer of the multilayer structure which has an adhesion layer.
　本発明の粘着層付屋根下葺材の実施形態の一例について、図１にて説明する。図１に示されるように、本実施形態とする粘着層付屋根下葺材１は、粘着調整剤２と粒子体３とを含有する防滑層４の下に防水フィルム層５を両面に有する補強シート６が設けられ、その下に粘着層７、離型シート８が設けられている積層体である。 An example of an embodiment of the roof underlaying material with an adhesive layer of the present invention will be described with reference to FIG. As shown in FIG. 1, the roof underlaying material 1 with the pressure-sensitive adhesive layer according to this embodiment is a reinforcing sheet having waterproof film layers 5 on both sides under a non-slip layer 4 containing a pressure-adjusting agent 2 and particle bodies 3. 6 is a laminate in which an adhesive layer 7 and a release sheet 8 are provided thereunder.
　粘着調整剤２としては、防滑層４に適度な粘着性を付与する剤が挙げられ、具体的には、変性ポリオレフィン系、ポリウレタン系、アクリル系、エポキシ系、酢酸ビニル系、ポリエステル系、ポリビニルアルコール系、セルロース系、フェノール系、メラミン系からなる群から選択される少なくとも１つの樹脂が挙げられる。例えば、ポリエステル、ナイロン、アクリルなどの極性樹脂や、ポリエチレン、ポリプロピレンなどの無極性樹脂が挙げられるが、密着性の高い変性ポリオレフィン系を主剤とした樹脂であれば、防水性を発揮し易く好ましい。 Examples of the adhesion adjusting agent 2 include agents that impart appropriate adhesion to the anti-slip layer 4, and specifically, modified polyolefin-based, polyurethane-based, acrylic-based, epoxy-based, vinyl acetate-based, polyester-based, and polyvinyl alcohol. And at least one resin selected from the group consisting of a series, a cellulose series, a phenol series, and a melamine series. For example, polar resins such as polyester, nylon, and acryl, and nonpolar resins such as polyethylene and polypropylene can be used. However, a resin mainly composed of a modified polyolefin series having high adhesion is preferable because it is easy to exhibit waterproofness.
　また、粒子体３は、高分子系粉末、無機系粉末および熱膨張性マイクロカプセルからなる群から選択される少なくとも１つの粒子体である。なかでも、無機系粉末および／または熱膨張性マイクロカプセルは、粘着層付屋根下葺材の表面全体に微細な凹凸が形成され摩擦係数が高まり、防滑性が付与されるので好ましい。 The particle body 3 is at least one particle body selected from the group consisting of polymer powder, inorganic powder, and thermally expandable microcapsules. Among these, inorganic powders and / or thermally expandable microcapsules are preferable because fine irregularities are formed on the entire surface of the roof underfloor with the adhesive layer, the friction coefficient is increased, and slip resistance is imparted.
　高分子系粉末としては、ポリプロピレン系、ウレタン系、ナイロン系、テフロン（登録商標）系などが挙げられる。なかでも、加工性が良いポリプロピレン系が好ましい。また粒子径が１０～２００μｍであれば好ましい。１０μｍ以上であれば、表面の微細な凹凸により防滑性が向上する。また、２００μｍ以下であると、重ね部分の密着性の低下を抑えられる。 Examples of the polymer powder include polypropylene, urethane, nylon, and Teflon (registered trademark). Among these, a polypropylene type having good processability is preferable. The particle diameter is preferably 10 to 200 μm. If it is 10 μm or more, the anti-slip property is improved by the fine irregularities on the surface. Moreover, the fall of the adhesiveness of the overlap part can be suppressed as it is 200 micrometers or less.
　無機系粉末としては、楔形、円錐状、多角錐状などの三次元異形形状である無機系粉末が好ましい。具体的には、シリカ、炭酸カルシウム、酸化チタン、酸化亜鉛、炭酸マグネシウムなどが挙げられる。なかでも、分散性が良く耐薬品性もある酸化亜鉛が好ましい。また、粒子径が１０～２００μｍであれば好ましい。１０μｍ以上であれば、表面の微細な凹凸により防滑性が向上する。また、２００μｍ以下であると、重ね部分の密着性の低下を抑えられる。 The inorganic powder is preferably an inorganic powder having a three-dimensional irregular shape such as a wedge shape, a cone shape, or a polygonal pyramid shape. Specific examples include silica, calcium carbonate, titanium oxide, zinc oxide, and magnesium carbonate. Of these, zinc oxide, which has good dispersibility and chemical resistance, is preferable. The particle diameter is preferably 10 to 200 μm. If it is 10 μm or more, the anti-slip property is improved by the fine irregularities on the surface. Moreover, the fall of the adhesiveness of the overlap part can be suppressed as it is 200 micrometers or less.
　熱膨張性マイクロカプセルは、炭化水素などガスが内包したマイクロカプセルであるため、断熱効果があり、遮熱性を向上させるため好ましく使用される。粒子径は５～２０μｍであれば、防滑性及び耐摩耗性の面で好ましい。また、発泡倍率は２～１０倍であることが好ましい。この範囲であれば、防滑性及び耐摩耗性を向上させことができる。また、発泡後の粒子径、すなわち、作製された粘着層付屋根下葺材の熱膨張性マイクロカプセルの粒子径が１０～２００μｍであることが好ましい。１０μｍ以上であれば、表面の微細な凹凸により防滑性、耐摩耗性が向上する。また、２００μｍ以下であると、重ね部分の密着性の低下と耐摩耗性の低下を抑えられる。
　熱膨張性マイクロカプセルの内部に封入される炭化水素としては、ｎ－ブタン、ｉ－ブタン、ペンタン、ネオペンタンのような低沸点の炭化水素が好ましい。
　熱膨張性マイクロカプセルの素材としては、熱可塑性樹脂が挙げられ、具体的にはポリエチレン、ポリプロピレン等のポリオレフィン系、ポリエステル系、ポリウレタン系、アクリル系、酢酸ビニルアルコール系が挙げられる。 The thermally expandable microcapsule is a microcapsule encapsulating a gas such as hydrocarbon, and therefore has a heat insulating effect and is preferably used in order to improve the heat shielding property. A particle size of 5 to 20 μm is preferable in terms of slip resistance and wear resistance. The expansion ratio is preferably 2 to 10 times. Within this range, slip resistance and wear resistance can be improved. In addition, the particle diameter after foaming, that is, the particle diameter of the thermally expandable microcapsule of the produced roof underfloor material with an adhesive layer is preferably 10 to 200 μm. When the thickness is 10 μm or more, the anti-slip property and the wear resistance are improved by the fine irregularities on the surface. Further, when it is 200 μm or less, it is possible to suppress a decrease in the adhesion of the overlapped portion and a decrease in wear resistance.
The hydrocarbon encapsulated in the thermally expandable microcapsule is preferably a low boiling point hydrocarbon such as n-butane, i-butane, pentane, or neopentane.
Examples of the material of the thermally expandable microcapsule include thermoplastic resins, and specifically, polyolefins such as polyethylene and polypropylene, polyesters, polyurethanes, acrylics, and vinyl acetate alcohols.
　粒子体３の添加量としては、粘着調整剤１００重量部に対し２～４０重量部で添加することが好ましい。２重量部以上であれば、粒子体によって表面全体に凹凸を形成でき、防滑性が向上し、４０重量部以下であれば、粒子体の脱落が抑えられる。 The addition amount of the particles 3 is preferably 2 to 40 parts by weight with respect to 100 parts by weight of the tackifier. If it is 2 parts by weight or more, irregularities can be formed on the entire surface by the particle body, and anti-slip properties are improved. If it is 40 parts by weight or less, dropping of the particle body is suppressed.
　防滑層４は、公知の酸化防止剤、紫外線吸収剤、難燃剤、着色顔料等を添加することができる。また、アルミニウム、ニッケル、ステンレス、銀、クロム等の放射熱反射効果のある金属粉末を防滑層４に添加すると、遮熱性を向上させることができる。 The anti-slip layer 4 may be added with known antioxidants, ultraviolet absorbers, flame retardants, color pigments and the like. In addition, when a metal powder having a radiation heat reflecting effect such as aluminum, nickel, stainless steel, silver, or chromium is added to the anti-slip layer 4, the heat shielding property can be improved.
　前記防滑層４と粘着層７との粘着力、すなわち、粘着層付屋根下葺材の自背面粘着力は、９Ｎ／２５ｍｍ以上であることが好ましく、１０Ｎ／２５ｍｍ以上であることがより好ましい。９Ｎ／２５ｍｍ以上であれば、重ね部分の密着性が良く、防水性が発揮できる。また、粘着層７と野地板との粘着力は、３Ｎ／２５ｍｍ以上であることが好ましく、１０Ｎ／２５ｍｍ以上であることがより好ましい。３Ｎ／２５ｍｍ以上であれば、重ね部分の密着性が良く、防水性が発揮できる。さらに、粘着層７の野地板に対する粘着力と自背面粘着力との差は、１０Ｎ／２５ｍｍ以下であることが好ましく、４Ｎ／２５ｍｍ以下であることがより好ましい。１０Ｎ／２５ｍｍ以下であれば、重ね部分、及び重ね部分以外の部分（合板への貼り部分）は、共に反り返りや浮き等が発生し難く、良好な密着性が維持され、長期に亘って防水性が持続する。 The adhesive strength between the anti-slip layer 4 and the adhesive layer 7, that is, the self-rear adhesive strength of the roof underlaying material with the adhesive layer is preferably 9 N / 25 mm or more, and more preferably 10 N / 25 mm or more. If it is 9 N / 25 mm or more, the adhesiveness of the overlapped portion is good and waterproofness can be exhibited. Moreover, it is preferable that it is 3N / 25mm or more, and, as for the adhesive force of the adhesion layer 7 and a field plate, it is more preferable that it is 10N / 25mm or more. If it is 3N / 25mm or more, the adhesiveness of the overlapping part is good and waterproofness can be exhibited. Furthermore, the difference between the adhesive strength of the adhesive layer 7 to the base plate and the self-back adhesive strength is preferably 10 N / 25 mm or less, and more preferably 4 N / 25 mm or less. If it is 10 N / 25 mm or less, the overlapping portion and the portion other than the overlapping portion (the portion attached to the plywood) are less likely to be warped or lifted, maintain good adhesion, and are waterproof over a long period of time. Persists.
　前記防滑層４のぬれ張力は、４０ｍＮ／ｍ以上であることが好ましく、４５ｍＮ／ｍ以上であることがより好ましい。４０ｍＮ／ｍ以上であれば、粘着層との親和性が良く、重ね部分の密着性を良好にすることができる。 The wetting tension of the anti-slip layer 4 is preferably 40 mN / m or more, and more preferably 45 mN / m or more. If it is 40 mN / m or more, the affinity with the pressure-sensitive adhesive layer is good and the adhesiveness of the overlapped portion can be improved.
　前記防滑層４の形成は、ロールコーティング法、グラビアコーティング法、リバースコーティング法などの公知の塗膜付与方法が用いられる。また、乾燥後防滑層の厚さは、３０～３００μｍであることが好ましい。３０μｍ以上の場合、粒子体の脱落を抑制でき充分な密着性が得られる。また、３００μｍ以下であれば、粒子体の埋没を抑制し、防滑性が得られる。さらに、軽量であるため、施工性も向上する。 The formation of the anti-slip layer 4 is performed by a known coating method such as a roll coating method, a gravure coating method, or a reverse coating method. The thickness of the anti-slip layer after drying is preferably 30 to 300 μm. In the case of 30 μm or more, drop off of the particle body can be suppressed and sufficient adhesion can be obtained. Moreover, if it is 300 micrometers or less, embedding of a particle body will be suppressed and anti-slip property will be acquired. Furthermore, since it is lightweight, workability is also improved.
　前記防水フィルム層５は、フィルムであるため、ハリコシを確保し易く、経済性、生産性、強度、防水性、表面平滑性に優れ、釘穴や重ね貼りにおける防水性にも優れる。
　防水フィルム層５を形成する材料としては、具体的にはポリエチレン、ポリプロピレン等のポリオレフィン系、ポリエステル系、ポリアミド系、ポリウレタン系からなる群から選ばれる少なくとも１種の樹脂である。なかでも、加工性、強度、経済性、疎水性の面からポリオレフィン系が好ましい。 Since the waterproof film layer 5 is a film, it is easy to secure a firmness, is excellent in economic efficiency, productivity, strength, waterproofness, surface smoothness, and is excellent in waterproofness in nail holes and overlaid.
The material for forming the waterproof film layer 5 is specifically at least one resin selected from the group consisting of polyolefins such as polyethylene and polypropylene, polyesters, polyamides, and polyurethanes. Of these, polyolefins are preferred from the viewpoints of processability, strength, economy, and hydrophobicity.
　本発明の粘着層付屋根下葺材は、屋根の野地板に設置したとき（すなわち、略水平に配置したとき）、補強シート６の鉛直方向上側に平滑な防水フィルム層５が設けられるため、下葺材を重ねた際の粘着層７との密着性が向上し、かつ重ね部分の隙間が生じ難くなる。従って、毛細管現象による浸水を防止する効果がある。また、補強シート６の下側に防水フィルム層５が設けられるため、粘着層７の厚さが均一となって粘着力が安定し、重ね部分から水が浸入し難く、密着性が良好となる。従って、施工の際に離型シート８を剥したとき粘着層７も一緒に剥れることを防止できる。
　前記防水フィルム層５の引張強度は、長手方向１０ＭＰａ以上、幅方向１０ＭＰａ以上であることが好ましい。これらの強度であれば、施工中に破れや裂けを軽減することができる。
　防水フィルム層５の厚さは、２０～２００μｍの範囲内であることが好ましい。２０μｍ以上であれば、充分な強度を得ることができる。また、２００μｍ以下であれば、軽量感を得られ、施工性が向上する。なお、上述の長手方向、幅方向について、本明細書では、連続的に製造されるフィルムの製造流れ方向を長手方向、製造流れに対して直角方向を幅方向とする。 When the roof underlaying material with an adhesive layer of the present invention is installed on a roof base plate (that is, when placed substantially horizontally), the smooth waterproof film layer 5 is provided on the upper side of the reinforcing sheet 6 in the vertical direction. Adhesiveness with the pressure-sensitive adhesive layer 7 when the brazing material is stacked is improved, and a gap between the overlapping portions is hardly generated. Therefore, there is an effect of preventing water infiltration due to capillary action. Further, since the waterproof film layer 5 is provided on the lower side of the reinforcing sheet 6, the thickness of the adhesive layer 7 is uniform, the adhesive force is stable, water does not easily enter from the overlapped portion, and the adhesion is good. . Therefore, it is possible to prevent the adhesive layer 7 from being peeled together when the release sheet 8 is peeled off during construction.
The waterproof strength of the waterproof film layer 5 is preferably 10 MPa or more in the longitudinal direction and 10 MPa or more in the width direction. With these strengths, tearing and tearing can be reduced during construction.
The thickness of the waterproof film layer 5 is preferably in the range of 20 to 200 μm. If it is 20 μm or more, sufficient strength can be obtained. Moreover, if it is 200 micrometers or less, a lightweight feeling will be acquired and construction property will improve. In addition, about the above-mentioned longitudinal direction and the width direction, in this specification, let the manufacturing flow direction of the film manufactured continuously be a longitudinal direction, and let a perpendicular direction with respect to a manufacturing flow be the width direction.
　なお、防水フィルム層５の製法は特に限定されず、インフレーション法、押出ラミネート法、キャスト法など公知の製造法で製膜可能である。また、補強シート６に、溶融した樹脂をシート状に成型しながら冷却し製膜する押出ラミネート法にて防水フィルム層５を形成してもよい。
　上層の防水フィルム層５は、均一なフィルムを成型し易いインフレーション法、押出ラミネート法、キャスト法で製膜することが好ましい。これらの製造法で得られたフィルムは、安定的に強度、防水性、表面平滑性を発揮し易い。
　また、防水フィルム層５は、防滑層４や粘着層７との密着性をより向上させるため、紫外線処理、プラズマ処理、コロナ処理などの表面改質を行うことができる。 In addition, the manufacturing method of the waterproof film layer 5 is not specifically limited, It can form into a film by well-known manufacturing methods, such as the inflation method, the extrusion lamination method, and the casting method. Alternatively, the waterproof film layer 5 may be formed on the reinforcing sheet 6 by an extrusion laminating method in which the molten resin is cooled and formed into a sheet while being formed into a sheet.
The upper waterproof film layer 5 is preferably formed by an inflation method, an extrusion laminating method, or a casting method that facilitates forming a uniform film. Films obtained by these production methods tend to stably exhibit strength, waterproofness and surface smoothness.
Further, the waterproof film layer 5 can be subjected to surface modification such as ultraviolet treatment, plasma treatment and corona treatment in order to further improve the adhesion to the anti-slip layer 4 and the adhesive layer 7.
　防水フィルム層５には、公知の酸化防止剤、紫外線吸収剤、難燃剤、着色顔料等を添加することができる。 The waterproof film layer 5 can be added with known antioxidants, ultraviolet absorbers, flame retardants, color pigments, and the like.
　補強シート６は、前記防水フィルム層５を補強、支持できるものであればよく、具体的には不織布、織物、編物、フィルムなどが挙げられる。なかでも、コスト、生産性、強度の面から不織布が好ましい。
　不織布は、引張強度が長手方向２５Ｎ／ｃｍ以上、幅方向２０Ｎ／ｃｍ以上、引裂強度が長手方向１０Ｎ以上、幅方向８Ｎ以上であることが好ましい。これらの強度を満たしていれば、施工中の破れや裂けを軽減することができる。不織布の目付は、６０～３００ｇ／ｍ２であることが好ましい。６０ｇ／ｍ２以上であれば、充分な強度とハリコシを得られる。また、３００ｇ／ｍ２以下であれば軽量であるため、施工性が向上する。不織布の素材としては特に限定されるものではなく、具体的にはポリエチレン、ポリプロピレン等のポリオレフィン系、ポリエチレンテレフタレート、ポリメチレンテレフタレート等のポリエステル系、ナイロン、アラミド等のポリアミド系からなる群から選ばれる少なくとも１種の材料からなる高分子素材が挙げられる。なかでも、ハリコシ、加工性、強度、寸法安定性の面からポリエステル系が好ましい。
　また、前記不織布の製法は特に限定されず、スパンボンド法、メルトブロー法、サーマルボンド法、ケミカルボンド法、ニードルパンチ法など公知の製造法を使用することができる。 The reinforcing sheet 6 only needs to be able to reinforce and support the waterproof film layer 5, and specific examples thereof include a nonwoven fabric, a woven fabric, a knitted fabric, and a film. Among these, non-woven fabrics are preferable from the viewpoints of cost, productivity, and strength.
The nonwoven fabric preferably has a tensile strength of 25 N / cm or more in the longitudinal direction, 20 N / cm or more in the width direction, a tear strength of 10 N or more in the longitudinal direction, and 8 N or more in the width direction. If these strengths are satisfied, tearing and tearing during construction can be reduced. The basis weight of the nonwoven fabric is preferably 60 to 300 g / m 2 . If it is 60 g / m 2 or more, sufficient strength and elasticity can be obtained. Moreover, since it is lightweight if it is 300 g / m < 2 > or less, workability | operativity improves. The material of the nonwoven fabric is not particularly limited, and specifically, at least selected from the group consisting of polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate and polymethylene terephthalate, and polyamides such as nylon and aramid. A polymer material composed of one kind of material can be mentioned. Of these, polyesters are preferred from the viewpoints of elasticity, processability, strength, and dimensional stability.
Moreover, the manufacturing method of the said nonwoven fabric is not specifically limited, Well-known manufacturing methods, such as the spun bond method, the melt blow method, the thermal bond method, the chemical bond method, and the needle punch method, can be used.
　補強シート６には、公知の酸化防止剤、紫外線吸収剤、難燃剤、着色顔料等を添加することができる。 The reinforcing sheet 6 can be added with known antioxidants, ultraviolet absorbers, flame retardants, color pigments and the like.
　防水フィルム層５と補強シート６との接着方法としては、両者の間に接着層を設けてもよいし、設けなくてもよい。接着層を設ける場合は、ポリエチレン、ポリプロピレンなどのポリオレフィン系、ポリエステル系、ポリウレタン系、アクリル系、酢酸ビニル系、塩化ビニル系からなる群から選ばれる少なくとも１種の樹脂を、水や溶剤等の溶媒に分散または溶解させ、この分散液又は溶液を防水フィルム層５又は補強シート６に塗工した後、溶媒を飛ばして接着層を形成し、両者を貼り合せるドライラミネート法、又は溶媒を飛ばさずに両者を貼り合わせてから乾燥させるウェットラミネート法、樹脂を熱で溶融し、シート状や糸状に成型しながら貼り合せ、冷却して接着層とする押出ラミネート法、ホットメルトラミネート法が挙げられる。
　また、接着層を設けない場合は、防水フィルム層と補強シートを熱で融着させるサーマルラミネートなどの公知のラミネート方法が用いられる。
　なお、接着層を設ける場合は、接着層の厚さは、５～１００μｍであることが好ましい。５μｍ以上の場合、充分な接着力が得られる。また、１００μｍ以下であれば軽量であるため、施工性も向上する。 As a method for adhering the waterproof film layer 5 and the reinforcing sheet 6, an adhesive layer may or may not be provided between them. When the adhesive layer is provided, at least one resin selected from the group consisting of polyolefins such as polyethylene and polypropylene, polyesters, polyurethanes, acrylics, vinyl acetates, and vinyl chlorides is used as a solvent such as water or a solvent. After the dispersion or solution is applied to the waterproof film layer 5 or the reinforcing sheet 6, the solvent is removed to form an adhesive layer, and the both are bonded together, or the solvent is not applied. Examples include a wet laminating method in which the two are bonded together and then dried, an extrusion laminating method in which the resin is melted by heat and bonded while being molded into a sheet or thread shape, and cooled to form an adhesive layer, and a hot melt laminating method.
When the adhesive layer is not provided, a known laminating method such as thermal lamination in which the waterproof film layer and the reinforcing sheet are fused by heat is used.
In the case where an adhesive layer is provided, the thickness of the adhesive layer is preferably 5 to 100 μm. In the case of 5 μm or more, sufficient adhesive force can be obtained. Moreover, since it is lightweight if it is 100 micrometers or less, workability | operativity also improves.
　粘着層７としては、温度影響が少なく、被着体の極性に左右され難い合成ゴムが使用される。具体的には、ブチルゴム系、イソプレンゴム系、スチレンブタジエンゴム系、ポリイソブチレン系、クロロプレンゴム系、ニトリルゴム系、グラフトゴム系が挙げられる。なかでも、防水性、耐候性、耐熱性、耐薬品性、金属との粘着性に優れたブチルゴム系が好ましい。これらの群から選択される少なくとも１種の合成ゴムに、粘着付与剤が添加され、粘着性を有する粘着層が形成される。 As the adhesive layer 7, a synthetic rubber that is less affected by temperature and hardly influenced by the polarity of the adherend is used. Specific examples include butyl rubber, isoprene rubber, styrene butadiene rubber, polyisobutylene, chloroprene rubber, nitrile rubber, and graft rubber. Of these, a butyl rubber system excellent in waterproofness, weather resistance, heat resistance, chemical resistance, and adhesion to metal is preferable. A tackifier is added to at least one synthetic rubber selected from these groups to form a pressure-sensitive adhesive layer.
　粘着層７には、公知の酸化防止剤、紫外線吸収剤、難燃剤、着色顔料等を添加することができる。 The adhesive layer 7 can be added with known antioxidants, ultraviolet absorbers, flame retardants, color pigments and the like.
　また、粘着層７の形成には、カレンダーコーティング法、ドクターコーティング法、ロールコーティング法、押出成型コーティング法などの公知の塗膜付与方法が用いられる。 Further, for the formation of the pressure-sensitive adhesive layer 7, a known coating method such as a calendar coating method, a doctor coating method, a roll coating method, or an extrusion coating method is used.
　また、粘着層７の厚さは、１００～５００μｍであることが好ましい。１００μｍ以上であれば、充分な粘着力と釘穴の防水性を得ることができる。また、５００μｍ以下であれば、軽量感を得られ、かつ自重で垂れ下がることによる粘着層同士の接着を抑制できるため、施工性が向上する。 The thickness of the adhesive layer 7 is preferably 100 to 500 μm. If it is 100 micrometers or more, sufficient adhesive force and the waterproofness of a nail hole can be acquired. Moreover, if it is 500 micrometers or less, since a light feeling can be obtained and the adhesion | attachment of the adhesion layers by hanging down with dead weight can be suppressed, workability | operativity improves.
　粘着層７の表面には、離型シート８を備えることができる。離型シート８としては、特に限定されないが、経済性の面から、抄造紙に離型剤を塗工したものなどが好ましく使用される。重量は、５０～１５０ｇ／ｍ２であることが好ましい。５０ｇ／ｍ２以上であれば強度を維持し易いため、粘着層７から引き剥がす際も破れ難い。また、１５０ｇ／ｍ２以下であれば、軽量であるため、施工性が向上する。 A release sheet 8 can be provided on the surface of the adhesive layer 7. Although it does not specifically limit as the release sheet 8, From the economical surface, what coated the release agent on papermaking paper etc. are used preferably. The weight is preferably 50 to 150 g / m 2 . Since it is easy to maintain strength if it is 50 g / m 2 or more, it is difficult to tear when peeled off from the adhesive layer 7. Moreover, if it is 150 g / m < 2 > or less, since it is lightweight, workability | operativity improves.
　粘着層付屋根下葺材１は、必要に応じて、防水フィルム層５を２層以上積層するなど、同じ効果を得ることを目的とした層を２層以上積層しても良い。 The roof underlaying material 1 with the adhesive layer may be laminated with two or more layers aiming at obtaining the same effect, for example, by laminating two or more waterproof film layers 5 as necessary.
　粘着層付屋根下葺材１の総重量は、３００～９００ｇ／ｍ２であることが好ましい。３００ｇ／ｍ２以上であれば強度を維持し易い。また、９００ｇ／ｍ２以下であれば、軽量であるため、施工性が向上する。
　粘着層付根下葺材１の総厚さは、４００～９００μｍであることが好ましい。４００μｍ以上であれば強度を維持し易い。また、９００μｍ以下であれば、柔軟性に富み、被着体に押さえつけ易いため、施工性が向上する。
　粘着層付屋根下葺材１の引張強度は、長手方向６０Ｎ／ｃｍ以上、幅方向４０Ｎ／ｃｍ以上、引裂強度は、長手方向１０Ｎ以上、幅方向１０Ｎ以上であることが好ましい。これらの強度を満たしていれば、施工中に破れや裂けを軽減することができる。
　粘着層付屋根下葺材１の剛軟度は、長手方向、幅方向共に７０以上であることが好ましい。この剛軟度を満たしていれば、自重で垂れ下がり粘着層同士が接着することを防ぐことができる。 The total weight of the roof underlay material 1 with the adhesive layer is preferably 300 to 900 g / m 2 . If it is 300 g / m 2 or more, the strength is easily maintained. Moreover, since it is lightweight if it is 900 g / m < 2 > or less, workability | operativity improves.
The total thickness of the base layer 1 with the adhesive layer is preferably 400 to 900 μm. If it is 400 micrometers or more, it will be easy to maintain intensity | strength. Moreover, if it is 900 micrometers or less, since it is rich in flexibility and it is easy to hold down to a to-be-adhered body, workability | operativity improves.
The tensile strength of the roof underlay material 1 with the adhesive layer is preferably 60 N / cm or more in the longitudinal direction and 40 N / cm or more in the width direction, and the tear strength is 10 N or more in the longitudinal direction and 10 N or more in the width direction. If these strengths are satisfied, tearing and tearing can be reduced during construction.
The bending resistance of the roof underlaying material 1 with the adhesive layer is preferably 70 or more in both the longitudinal direction and the width direction. If the bending resistance is satisfied, it is possible to prevent the pressure-sensitive adhesive layers from adhering to each other due to their own weight.
　以下に述べる実施例、比較例によって本発明の粘着層付屋根下葺材を具体的に説明するが、本発明はこれらに限定されるものではない。
　本発明に係る実施例１乃至実施例５の粘着層付屋根下葺材を製造し、その物性を測定した。また、比較のため、比較例１乃至比較例４の粘着層付屋根下葺材を製造し、その物性を測定した。実施例及び比較例における各物性は、以下の方法により測定し評価した。 The following examples and comparative examples will specifically describe the roof underlaying material with an adhesive layer of the present invention, but the present invention is not limited thereto.
The roof underlaying materials with adhesive layers of Examples 1 to 5 according to the present invention were manufactured, and their physical properties were measured. Moreover, the roof underlaying material with the adhesion layer of the comparative example 1 thru | or the comparative example 4 was manufactured for the comparison, and the physical property was measured. Each physical property in Examples and Comparative Examples was measured and evaluated by the following methods.
（１）粘着力
　下記（１）－１～（１）－３の各条件にて処理後、ＪＩＳ　Ｚ０２３７　１０．４．１方法１：試験板に対する１８０°引きはがし粘着力に準拠し、屋根の野地板を想定した針葉樹合板（林ベニヤ産業株式会社製　タイガプライ１２ｍｍ厚　高耐久合板）への粘着力および自背面への粘着力を測定した。合板への粘着力については、３Ｎ／２５ｍｍ以上を粘着性に優れると評価した。自背面への粘着力については、９Ｎ／２５ｍｍ以上を粘着性に優れると評価した。なお、合板への粘着力と自背面への粘着力との差が、１０Ｎ／２５ｍｍ以下である場合、重ね部分、及び重ね部分以外の部分（合板への貼り部分）は、共に反り返りや浮き等が発生し難く、良好な密着性が維持され、重ね部分の防水性に優れると評価できる。
（１）－１　常温
　気温２３℃湿度５０％環境にて下葺材と合板を１時間以上養生し、合板および自背面との粘着力を養生と同じ環境下にて測定した。
（１）－２　低温
　気温０℃環境にて下葺材と合板を１時間以上養生し、合板および自背面との粘着力を養生と同じ環境下で測定した。
（１）－３　加熱処理後
　気温８０℃の加熱高温器内に２４時間養生後、合板および自背面との粘着力を常温下で測定した。
（２）釘穴止水性
　下記（２）－１～（２）－３の各条件にて処理後、アスファルトルーフィング工業会規格「改質アスファルトルーフィング材　７．８釘穴シーリング性」に準じ、水頭１５０ｍｍに設定し、リング釘を用いて釘穴止水性を測定した。合板は、粘着力試験で用いた合板と同種の合板（１００ｍｍ×１００ｍｍ）を用いた。Ｎ＝１０で実施し、２４時間後の平均減水高さを測定した。４ｍｍ以下を止水性に優れていると評価した。
（２）－１　常温
　気温２３℃湿度５０％環境にて、粘着層付屋根下葺材と合板を２４時間以上養生し、養生と同じ環境下で釘穴止水性を測定した。
（２）－２　低温
　気温０℃環境にて、粘着層付屋根下葺材と合板を２４時間以上養生し、養生と同じ環境下で釘穴止水性を測定した。
（２）－３　加熱処理後
　８０℃の加熱高温器内にて、粘着層付屋根下葺材と合板を２４時間以上養生し、常温下で釘穴止水性を測定した。
（３）重ね部分密着性
　下記（３）－１～（３）－３の各条件にて処理後、粘着力試験で用いた合板と同種の合板（２００ｍｍ×２００ｍｍ）を用意し、図２のように合板上に重ね部分１０が１０ｍｍとなるように長手が２００ｍｍ、幅が１１０ｍｍの粘着層付屋根下葺材２枚を貼りつけ、重ね部分１０が中心となるようにアクリル製管（２００ｍｍ高さ、内径１５０ｍｍ、外形１６０ｍｍ）を立て、アクリル製管と粘着層付屋根下葺材の表面をコーキング材で固定した。コーキング材が硬化した後に水頭１５０ｍｍとなるように水を入れて、２４時間放置後に、重ね部分の合板側への漏水の有無を確認した。漏水の判断として、合板が湿っている場合に漏水ありとした。
（３）－１　常温
　気温２３℃湿度５０％環境にて２４時間養生後、重ね部分の漏水を養生と同じ環境下で確認した。
（３）－２　低温
　気温０℃環境にて粘着層付屋根下葺材を２４時間以上養生し、重ね部分の漏水を養生と同じ環境下で確認した。
（３）－３　加熱処理後
　８０℃の加熱高温器内に２４時間養生後、重ね部分の漏水を常温下で確認した。
（４）ハリコシ
　下記（４）－１～（４）－２の評価にて、ハリコシを確認した。
（４）－１　剛軟度
　ＪＩＳ　Ｌ１０９６．８．２１．４　Ａ法（４５°カンチレバー法）に準拠し、離型シートを剥した状態で長手方向および幅方向の剛軟度を測定した。７０以上を合格とした。
（４）－２　自重折れ曲がり
　１００ｃｍ×１００ｃｍにカットした粘着層付屋根下葺材から離型シートを剥し粘着層を下向きにして、幅方向両端の中心部分を掴み垂れ下げた場合に、自重で折れ曲がり粘着層同士が接着するか確認した。接着しなかった場合を合格とした。
（５）静摩擦係数試験
　静摩擦係数試験機（新東科学株式会社製　トライボギア静摩擦係数測定機ＴＹＰＥ：１０）を用いて、粘着層付屋根下葺材表面とクラフト紙（ＪＩＳ　Ｐ３４０１クラフト紙１種）との静摩擦係数を測定した。０．５０以上を合格とした。
（６）防滑評価
　６寸勾配（角度３０．９６３８°）の屋根模型を作製し、野地板面に粘着層付屋根下葺材を張り付けた後、粘着層付屋根下葺材表面を歩行し滑り具合を確認した。粘着層付屋根下葺材表面が乾燥状態と湿潤状態での評価を次の評価基準にて行った。
　評価基準
　○：滑り難く、安全に歩行できる
　△：少し滑るが、安全に歩行できる
　×：滑り易く、危険である (1) Adhesive strength After treatment under the following conditions (1) -1 to (1) -3, JIS Z0237 10.4.1 Method 1: According to the 180 ° peeling adhesive strength to the test plate, Adhesive strength to coniferous plywood (Forage Beniya Sangyo Co., Ltd., Taiga Ply 12 mm thick high durability plywood) and adhesive strength to the back surface were measured. About the adhesive force to a plywood, it evaluated that 3N / 25mm or more was excellent in adhesiveness. About the adhesive force to a self-back surface, it evaluated that 9 N / 25mm or more was excellent in adhesiveness. In addition, when the difference between the adhesive force to the plywood and the adhesive force to the back surface is 10 N / 25 mm or less, the overlapped portion and the portion other than the overlapped portion (attachment portion to the plywood) are both warped and lifted. It is hard to occur, it can be evaluated that good adhesion is maintained and the waterproofness of the overlapped portion is excellent.
(1) -1 Normal temperature Temperature of 23 ° C. and humidity of 50%. The lower wood and the plywood were cured for 1 hour or more, and the adhesive strength between the plywood and the back surface was measured in the same environment as the curing.
(1) -2 Low temperature Cured material and plywood were cured for 1 hour or more in a temperature of 0 ° C., and the adhesion between the plywood and the back surface was measured in the same environment as the curing.
(1) -3 After heat treatment After curing for 24 hours in a heating high-temperature vessel at an air temperature of 80 ° C., the adhesive strength between the plywood and the back surface was measured at room temperature.
(2) Nail hole water resistance After treatment under the conditions (2) -1 to (2) -3 below, the head of the asphalt roofing industry association standard “modified asphalt roofing material 7.8 nail hole sealing performance” The thickness of the nail hole was measured using a ring nail. As the plywood, the same type of plywood (100 mm × 100 mm) as used in the adhesion test was used. It implemented by N = 10 and measured the average water reduction height after 24 hours. 4 mm or less was evaluated as being excellent in water-stopping property.
(2) -1 Normal temperature At 23 ° C. and 50% humidity, the roof underlaying material and the plywood were cured for 24 hours or more, and the nail hole water resistance was measured in the same environment as the curing.
(2) -2 Low temperature Under the temperature of 0 ° C., the adhesive underlayer roofing material and plywood were cured for 24 hours or more, and the nail hole water resistance was measured in the same environment as the curing.
(2) -3 After heat treatment In a heating high-temperature vessel at 80 ° C., the roof underlaying material with adhesive layer and the plywood were cured for 24 hours or more, and the nail hole water resistance was measured at room temperature.
(3) Overlap partial adhesion After processing under the following conditions (3) -1 to (3) -3, a plywood of the same type as the plywood used in the adhesive strength test (200 mm × 200 mm) was prepared. In this way, two pieces of an adhesive layer-attached roof underlaying material having a length of 200 mm and a width of 110 mm are pasted on the plywood so that the overlapping portion 10 becomes 10 mm, and an acrylic pipe (200 mm height) The inner surface was 150 mm, the outer diameter was 160 mm, and the surfaces of the acrylic pipe and the roof underlaying material with the adhesive layer were fixed with a caulking material. After the caulking material was cured, water was added so that the water head became 150 mm, and after standing for 24 hours, the presence or absence of water leakage to the plywood side of the overlapped portion was confirmed. As a judgment of water leakage, it was assumed that there was water leakage when the plywood was wet.
(3) -1 Normal temperature Air temperature 23 ° C. Humidity 50% environment After 24 hours of aging, water leakage was confirmed in the same environment as the curing.
(3) -2 Low temperature The roof underlaying material with the adhesive layer was cured for 24 hours or more in an environment with a temperature of 0 ° C., and leakage of the overlapped portion was confirmed in the same environment as the curing.
(3) -3 After heat treatment After curing for 24 hours in a heating high-temperature vessel at 80 ° C., leakage of the overlapped portion was confirmed at room temperature.
(4) Harshness Harness was confirmed by the following evaluations (4) -1 to (4) -2.
(4) -1 Bending softness In accordance with JIS L1096.88.21.4 A method (45 ° cantilever method), the bending softness in the longitudinal and width directions was measured with the release sheet peeled off. 70 or more was accepted.
(4) -2 Bending by its own weight When the release sheet is peeled off from the roof covering with adhesive layer cut to 100cm x 100cm, the adhesive layer faces downward, and the center part at both ends in the width direction is gripped and hangs down by its own weight. It was confirmed whether the layers adhered. The case where it did not adhere | attached was set as the pass.
(5) Static friction coefficient test Using a static friction coefficient tester (Tribogear static friction coefficient measuring machine TYPE: 10, manufactured by Shinto Kagaku Co., Ltd.), the surface of the roof underfloor with adhesive layer and kraft paper (JIS P3401 kraft paper) The static friction coefficient was measured. A value of 0.50 or more was accepted.
(6) Anti-slip evaluation After making a 6-inch gradient (angle 30.9638 °) roof model and sticking the roof underlaying material with the adhesive layer on the base plate surface, walking on the surface of the roofing underlaying material with the adhesive layer to check the slip condition confirmed. Evaluation of the surface of the roof underlay with adhesive layer in a dry state and a wet state was performed according to the following evaluation criteria.
Evaluation criteria ○: It is hard to slip and can walk safely. △: It slips a little, but it can walk safely. ×: It is slippery and dangerous.
［実施例１］
　補強シート６を構成するポリエステル不織布（新麗企業株式会社製、目付１００ｇ／ｍ２スパンボンド）の一方の面に、ポリエチレンフィルム（林一二株式会社製、厚さ４０μｍ）を、押出ラミネート法によってポリエチレン樹脂（東ソー株式会社製、ペロトセン（登録商標）２１２）を接着層とし厚さ２０μｍで形成しながら積層し、上層側（施工時鉛直方向上側）の防水フィルム層５とした。
　次に、ポリエチレンフィルムを積層した面と反対面に、押出ラミネート法によってポリエチレン樹脂（東ソー株式会社製、ペロトセン（登録商標）２１２）を厚さ５０μｍで押出し、下層側（施工時鉛直方向下側）の防水フィルム層５を形成した。
　次に、粘着調整剤２である変性ポリオレフィン系樹脂（坂井化学工業株式会社製、ユープライ（登録商標）Ｐ－３９６３）１００重量部に対し、粒子体３であるアクリル系の熱膨張性マイクロカプセル（松本油脂製薬株式会社製、マイクロスフェアーＦ－３０、粒子径：１４μｍ　）を２０重量部添加した樹脂組成物を、上層側の防水フィルム層５の上に、グラビアコーターにより厚さが２５μｍになるように塗工し、防滑層４を形成した。
　次に、防水フィルム層５の防滑層４を形成した面と反対の面に、ブチルゴムに粘着付与剤を混合してなる粘着剤（古藤工業株式会社製　Ｇ２０７Ｋ）をカレンダーコーティング法にて２００μｍ厚の粘着層７を形成しながら、離型シート８（王子特殊紙株式会社製、セパレート７０ＫＰＳ）を仮接着し、粘着層付屋根下葺材１を得た。
　総重量は７１１ｇ／ｍ２、総厚さは７４３μｍであった。防滑層４表面のぬれ張力を、ＪＩＳ　Ｋ６７６８に準拠し測定したところ、４８ｍＮ／ｍであった。なお、粘着層付屋根下葺材１の物性値、評価結果を表１に示す。 [Example 1]
On one side of the polyester nonwoven fabric (made by Shinryo Co., Ltd., weight per unit: 100 g / m 2 spunbond) constituting the reinforcing sheet 6, a polyethylene film (made by Hayashi Koji Co., Ltd., thickness 40 μm) is formed by an extrusion lamination method. Polyethylene resin (Perosen (registered trademark) 212, manufactured by Tosoh Corporation) was used as an adhesive layer and laminated while forming at a thickness of 20 μm to form a waterproof film layer 5 on the upper layer side (vertical upper side during construction).
Next, a polyethylene resin (Perotosen (registered trademark) 212, manufactured by Tosoh Corporation) is extruded with a thickness of 50 μm on the surface opposite to the surface on which the polyethylene film is laminated by the extrusion laminating method, and the lower layer side (vertical lower side during construction) The waterproof film layer 5 was formed.
Next, acrylic heat-expandable microcapsules (particles 3) (100 parts by weight of modified polyolefin resin (Sakai Chemical Industry Co., Ltd., U-Ply (registered trademark) P-3963), which is the adhesion modifier 2, A resin composition to which 20 parts by weight of Microsphere F-30 manufactured by Matsumoto Yushi Seiyaku Co., Ltd., particle size: 14 μm) is added is formed on the waterproof film layer 5 on the upper layer side to a thickness of 25 μm by a gravure coater. Thus, the anti-slip layer 4 was formed.
Next, an adhesive (G207K, manufactured by Furuto Kogyo Co., Ltd.) obtained by mixing a tackifier with butyl rubber on the surface of the waterproof film layer 5 opposite to the surface on which the anti-slip layer 4 is formed is 200 μm thick by a calendar coating method. While forming the adhesive layer 7, a release sheet 8 (manufactured by Oji Specialty Paper Co., Ltd., separate 70 KPS) was temporarily bonded to obtain an underlayer roofing material 1 with an adhesive layer.
The total weight was 711 g / m 2 and the total thickness was 743 μm. It was 48 mN / m when the wetting tension on the surface of the anti-slip layer 4 was measured according to JIS K6768. In addition, the physical property values and evaluation results of the roof underlaying material 1 with the adhesive layer are shown in Table 1.
［実施例２］
　粘着層７を、１２０μｍ厚に変更したこと以外は、実施例１と同様に加工して、粘着層付屋根下葺材１を得た。粘着層付屋根下葺材１の物性値、評価結果を表１に示す。 [Example 2]
The adhesive layer 7 was processed in the same manner as in Example 1 except that the thickness was changed to 120 μm. Table 1 shows the physical property values and evaluation results of the roof underlay material 1 with an adhesive layer.
［実施例３］
　粘着層７を、４８０μｍ厚に変更したこと以外は、実施例１と同様に加工して、粘着層付屋根下葺材１を得た。粘着層付屋根下葺材１の物性値、評価結果を表１に示す。 [Example 3]
Except having changed the adhesion layer 7 into 480 micrometers thickness, it processed like Example 1 and obtained the roof underlaying material 1 with an adhesion layer. Table 1 shows the physical property values and evaluation results of the roof underlay material 1 with an adhesive layer.
［実施例４］
　粒子体３を、酸化亜鉛のフィラー（株式会社アムテック製、パナテトラ（登録商標）ＷＺ－０５１１Ｌ：粒径２０μｍ）に変更したこと以外は、実施例１と同様に加工して、粘着層付屋根下葺材１を得た。粘着層付屋根下葺材１の物性値、評価結果を表１に示す。 [Example 4]
The particle body 3 was processed in the same manner as in Example 1 except that the particle body 3 was changed to a zinc oxide filler (manufactured by Amtec Co., Ltd., Panatetra (registered trademark) WZ-0511L: particle size 20 μm). A firewood 1 was obtained. Table 1 shows the physical property values and evaluation results of the roof underlay material 1 with an adhesive layer.
［実施例５］
　上層側の防水フィルム層５と補強シート６を、接着層を形成せずサーマルラミネート法によって積層したこと以外は、実施例１と同様に加工して、粘着層付屋根下葺材１を得た。粘着層付屋根下葺材１の物性値、評価結果を表１に示す。 [Example 5]
Except that the waterproof film layer 5 and the reinforcing sheet 6 on the upper layer side were laminated by the thermal lamination method without forming the adhesive layer, the roof underlaying material 1 with the adhesive layer was obtained in the same manner as in Example 1. Table 1 shows the physical property values and evaluation results of the roof underlay material 1 with an adhesive layer.
［比較例１］
　粘着層７を、粘着付与剤を付与したブチルゴムの代わりにアクリル系粘着剤（サイデン化学株式会社製、サイビノール（登録商標）ＡＴ－Ｄ４５）を用いて、ロールコーティング法で１００μｍ厚に加工したこと以外は、実施例１と同様に加工して、粘着層付屋根下葺材を得た。粘着層付屋根下葺材の物性値、評価結果を表１に示す。 [Comparative Example 1]
Except that the pressure-sensitive adhesive layer 7 is processed to a thickness of 100 μm by roll coating using an acrylic pressure-sensitive adhesive (Saiden Chemical Co., Ltd., Cybinol (registered trademark) AT-D45) instead of butyl rubber to which a tackifier has been added. Was processed in the same manner as in Example 1 to obtain a roof underlaying material with an adhesive layer. Table 1 shows the physical properties and evaluation results of the roof underlaying material with an adhesive layer.
［比較例２］
　防滑層４を形成しなかったこと以外は、実施例１と同様に加工して、粘着層付屋根下葺材を得た。粘着層付屋根下葺材の物性値、評価結果を表１に示す。 [Comparative Example 2]
Except that the anti-slip layer 4 was not formed, it was processed in the same manner as in Example 1 to obtain a roof underlaying material with an adhesive layer. Table 1 shows the physical properties and evaluation results of the roof underlaying material with an adhesive layer.
［比較例３］
　上層側の防水フィルム層５を形成せず、補強シート６の表面に防滑層４を形成したこと以外は、実施例１と同様に加工して、粘着層付屋根下葺材を得た。粘着層付屋根下葺材の物性値、評価結果を表１に示す。 [Comparative Example 3]
Except that the upper waterproof film layer 5 was not formed and the anti-slip layer 4 was formed on the surface of the reinforcing sheet 6, processing was carried out in the same manner as in Example 1 to obtain a roof underlaying material with an adhesive layer. Table 1 shows the physical properties and evaluation results of the roof underlaying material with an adhesive layer.
［比較例４］
　下層側の防水フィルム層５を形成しなかったこと以外は、実施例１と同様に加工して、粘着層付屋根下葺材を得た。粘着層付屋根下葺材の物性値、評価結果を表１に示す。 [Comparative Example 4]
It processed like Example 1 except not having formed the waterproof film layer 5 of the lower layer side, and obtained the roof underlaying material with the adhesion layer. Table 1 shows the physical properties and evaluation results of the roof underlaying material with an adhesive layer.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　表１より、本発明に係る実施例１乃至実施例５の粘着層付屋根下葺材は、粘着力、釘穴止水性、重ね部分密着性、ハリコシの各物性について、すべてがバランスよく優れるものであった。また、静摩擦係数も一定以上となっているため、人が屋根の上を歩行した場合に滑り難く、安全性が高いものであった。これに対し、比較例１乃至比較例４の粘着層付屋根下葺材は、上記各物性について個別には優れているものも見られたが、すべてのバランスに優れているものはなく、実用上問題があった。 From Table 1, the roof underlaying materials with adhesive layers of Examples 1 to 5 according to the present invention are all excellent in balance with respect to the physical properties of adhesive strength, nail hole waterproofing, overlapped partial adhesion, and elasticity. there were. Moreover, since the static friction coefficient is more than a certain value, it is difficult to slip when a person walks on the roof, and the safety is high. On the other hand, the roof underlaying materials with the adhesive layer of Comparative Examples 1 to 4 were individually excellent in each of the above physical properties, but none of them were excellent in all balances, and practically There was a problem.
１　　粘着層付屋根下葺材
２　　粘着調整剤
３　　粒子体
４　　防滑層
５　　防水フィルム層
６　　補強シート
７　　粘着層
８　　離型シート
９　　合板
１０　重ね部分
１１　アクリル製管
１２　コーキング材
１３　水 DESCRIPTION OF SYMBOLS 1 Roof underfloor material with adhesion layer 2 Adhesion regulator 3 Particle body 4 Anti-slip layer 5 Waterproof film layer 6 Reinforcement sheet 7 Adhesion layer 8 Release sheet 9 Plywood 10 Stack part 11 Acrylic pipe 12 Caulking material 13 Water

Claims (6)

  1. 　補強シートの両面に防水フィルム層を有し、屋根の野地板に設置したとき、鉛直方向の上側の防水フィルム層上面には、粘着調整剤および粒子体を含有する防滑層が積層されており、鉛直方向の下側の防水フィルム層下面には、合成ゴムおよび粘着付与剤を含有する粘着層が積層されている粘着層付屋根下葺材。 When the waterproof sheet has a waterproof film layer on both sides of the reinforcing sheet and is installed on the roof base plate, an anti-slip layer containing an adhesion modifier and particulates is laminated on the upper surface of the waterproof film layer in the vertical direction, A roof underlaying material with an adhesive layer in which an adhesive layer containing a synthetic rubber and a tackifier is laminated on the lower surface of the waterproof film layer on the lower side in the vertical direction.
  2. 　前記補強シートが、不織布である請求項１に記載の粘着層付屋根下葺材。 2. The roof underlay material with an adhesive layer according to claim 1, wherein the reinforcing sheet is a non-woven fabric.
  3. 　前記粒子体が、無機系粉末および熱膨張性マイクロカプセルからなる群から選択される少なくとも１つの粒子体であり、粒子径が１０～２００μｍである請求項１又は２に記載の粘着層付屋根下葺材。 The roof with an adhesive layer according to claim 1 or 2, wherein the particle body is at least one particle body selected from the group consisting of an inorganic powder and a thermally expandable microcapsule, and has a particle diameter of 10 to 200 µm. Firewood.
  4. 　前記防滑層のぬれ張力が、４０ｍＮ／ｍ以上である請求項１乃至３のいずれか１項に記載の粘着層付屋根下葺材。 The roof underfloor material with an adhesive layer according to any one of claims 1 to 3, wherein the wetting tension of the anti-slip layer is 40 mN / m or more.
  5. 　剛軟度が、長手方向、幅方向共に７０以上である請求項１乃至４のいずれか１項に記載の粘着層付屋根下葺材。 5. The roof underlaying material with an adhesive layer according to any one of claims 1 to 4, wherein the bending resistance is 70 or more in both the longitudinal direction and the width direction.
  6. 　前記粘着層の前記野地板に対する粘着力と自背面に対する粘着力との差が、１０Ｎ／２５ｍｍ以下である請求項１乃至５のいずれか１項に記載の粘着層付屋根下葺材。 The roof underlaying material with an adhesive layer according to any one of claims 1 to 5, wherein a difference between an adhesive force of the adhesive layer to the base plate and an adhesive force to the back surface is 10 N / 25 mm or less.
PCT/JP2015/073109 2014-08-20 2015-08-18 Roofing underlay with pressure-sensitive adhesive layer WO2016027799A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021140759A1 (en) * 2020-01-10 2021-07-15 日東電工株式会社 Adhesive tape
JP2021531996A (en) * 2018-07-12 2021-11-25 シーカ テクノロジー アクチェンゲゼルシャフト Self-adhesive sealing device with adhesive sealant layer

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002213054A (en) * 2001-01-16 2002-07-31 Gamusutaa Kk Roof underlaying waterproof sheet
JP2002220900A (en) * 2001-01-25 2002-08-09 Ube Ind Ltd Roof base material
JP2003206600A (en) * 2002-01-11 2003-07-25 Nanao Kogyo Kk Roof under-roofing material with self-pressure sensitive adhesive layer
JP2005113678A (en) * 2003-09-18 2005-04-28 Dupont-Asahi Flushspan Products Kk Roofing base material having adhesive surface
WO2012026532A1 (en) * 2010-08-25 2012-03-01 セーレン株式会社 Roof backing sheet and production method for same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002213054A (en) * 2001-01-16 2002-07-31 Gamusutaa Kk Roof underlaying waterproof sheet
JP2002220900A (en) * 2001-01-25 2002-08-09 Ube Ind Ltd Roof base material
JP2003206600A (en) * 2002-01-11 2003-07-25 Nanao Kogyo Kk Roof under-roofing material with self-pressure sensitive adhesive layer
JP2005113678A (en) * 2003-09-18 2005-04-28 Dupont-Asahi Flushspan Products Kk Roofing base material having adhesive surface
WO2012026532A1 (en) * 2010-08-25 2012-03-01 セーレン株式会社 Roof backing sheet and production method for same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021531996A (en) * 2018-07-12 2021-11-25 シーカ テクノロジー アクチェンゲゼルシャフト Self-adhesive sealing device with adhesive sealant layer
US11945983B2 (en) 2018-07-12 2024-04-02 Sika Technology Ag Self-adhering sealing device with an adhesive sealant layer
JP7463300B2 (en) 2018-07-12 2024-04-08 シーカ テクノロジー アクチェンゲゼルシャフト Self-adhesive sealing device having an adhesive sealant layer
WO2021140759A1 (en) * 2020-01-10 2021-07-15 日東電工株式会社 Adhesive tape
CN114787308A (en) * 2020-01-10 2022-07-22 日东电工株式会社 Adhesive tape
JP7491694B2 (en) 2020-01-10 2024-05-28 日東電工株式会社 Adhesive tape

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