WO2010092877A1 - 建材用透湿防水シート - Google Patents
建材用透湿防水シート Download PDFInfo
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- WO2010092877A1 WO2010092877A1 PCT/JP2010/051190 JP2010051190W WO2010092877A1 WO 2010092877 A1 WO2010092877 A1 WO 2010092877A1 JP 2010051190 W JP2010051190 W JP 2010051190W WO 2010092877 A1 WO2010092877 A1 WO 2010092877A1
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- WIPO (PCT)
- Prior art keywords
- layer
- moisture
- building materials
- waterproof sheet
- permeable waterproof
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
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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
- E04D12/002—Sheets of flexible material, e.g. roofing tile underlay
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/625—Sheets or foils allowing passage of water vapor but impervious to liquid water; house wraps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
- Y10T428/24322—Composite web or sheet
- Y10T428/24331—Composite web or sheet including nonapertured component
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T428/24826—Spot bonds connect components
Definitions
- the present invention relates to a moisture permeable waterproof sheet for building materials excellent in moisture permeability and waterproofness, which is used, for example, as a roof base material.
- a cloth impregnated with asphalt is often used as a roof base material of a house.
- the asphalt-impregnated fabric is excellent in that it is waterproof, has good dimensional stability, has high physical strength, and has good nail hole sealability around the nail axis when the nail is placed.
- the asphalt-impregnated fabric has a weight of more than 30 kg in a roll of about 20 m due to the asphalt content, there is a problem that the handleability at the time of application is very bad.
- the asphalt-impregnated fabric has almost no moisture permeability, and there is also a problem that the base plate is likely to be corroded due to the moisture contained therein without the moisture under the roof being removed after construction.
- the asphalt-impregnated fabric is apt to deteriorate or expand and contract due to the temperature difference between the temperature and the warmth, so that the nail hole sealability around the nail axis and the tacker portion tends to deteriorate with time.
- Patent Document 1 discloses that a resin layer having stretchability and adhesiveness is laminated on the surface of the fabric, and further, a resin layer with less adhesiveness is further deposited thereon. A roof base material which is laminated is proposed.
- Patent Document 2 a non-woven fabric having a non-slip layer on the upper surface is adhered to the upper surface of a waterproof and moisture-permeable polyethylene film, and a swelling layer made of a high water absorption polymer is formed on the lower surface of the polyethylene film.
- An architectural tarpaulin is described in which the non-woven fabric having the adhesive is adhered.
- the present invention has been made in view of such technical background, and is lightweight, capable of maintaining excellent nail hole sealing performance even under severe environmental conditions, sufficiently waterproof, and excellent in moisture permeability.
- the present invention provides the following means.
- Non-woven fabric layer having a bulk density of 0.01 g / cm 3 or more, A waterproof and moisture-permeable porous polyolefin film layer laminated on the upper side of the non-woven fabric layer; An adhesive resin layer in which the non-woven fabric layer and the porous polyolefin film layer are adhered, and a large number of linear resins are arranged substantially in parallel in a plan view, and an air-permeable adhesive resin layer is formed.
- the moisture permeable waterproof for building materials wherein the width of the linear resin in the air-permeable adhesive resin layer is 0.5 to 3 mm, and the width of the gap between adjacent linear resins is 0.1 to 1 mm. Sheet.
- thermoplastic resin film is laminated on the upper side of the porous polyolefin film layer, and a metal deposition film formed by vapor deposition of a bright metal material is provided on the upper side of the thermoplastic resin film, and on the upper side of the metal deposition film
- a surface protection layer in which light shielding particles are mixed with a transparent thermoplastic resin is laminated, and penetrates in the thickness direction to a heat shielding and antiglare function layer composed of the thermoplastic resin film, the metal deposition film and the surface protection layer. 7.
- the hole diameter (diameter) of the through hole is 0.3 to 0.7 mm, and the through hole is distributed at a rate of 500 to 1,000,000 pieces / m 2 according to any one of the above items 9 to 12 Moisture-permeable waterproof sheet for building materials.
- the invention of [1] is excellent in lightness because heavy asphalt is not used. Moreover, since the porous polyolefin film layer which has waterproofness and moisture permeability is arrange
- the adhesive resin layer is a breathable adhesive formed by arranging a large number of linear resins substantially in parallel in plan view
- the resin layer is composed, and since at least a part of the linear resin in the thickness direction is easily impregnated into the non-woven fabric layer, the resin-impregnated non-woven fabric is sufficiently in close contact with the driven nails and strongly nailed Can be sufficiently shut off (excellent nail hole sealability can be obtained).
- the width of the linear resin in the air-permeable adhesive resin layer is 0.5 to 3 mm, and the width of the gap between adjacent linear resins is 0.1 to 1 mm, the nail is more strongly driven. While being able to be pressed, the certainty of the water blocking effect can be further enhanced and, at the same time, better moisture permeability can be secured.
- the linear resins adjacent to each other in the air-permeable adhesive resin layer are partially welded along the length direction, so that the driven nail can be more strongly compressed, The certainty of the water blocking effect can be further enhanced.
- the air-permeable adhesive resin layer is formed by melt-extruding a thermoplastic resin into a thread by an extruder, so that a more uniform linear resin can be formed. Thereby, sufficient adhesive strength can be secured.
- the non-woven fabric layer is formed of a spunbond non-woven fabric or a melt-blown non-woven fabric, it is possible to further enhance the reliability of the water blocking effect.
- the spunbonded nonwoven fabric is made of polyolefin and the polyolefin is hydrophobic, the certainty of the water blocking effect can be further enhanced.
- the heat shielding layer can be sufficiently prevented from being damaged and the like, and sufficient heat shielding can be achieved for a long period of time. Can be secured.
- infrared rays can be sufficiently reflected in the metal vapor deposition film of the heat shielding and antiglare function layer, and the specular reflection light of visible light reflected by the metal vapor deposition film passes through the surface protection layer
- the light can be diffused due to the presence of the light shielding particles and the through holes in the surface protective layer in between, and the emission of specularly reflected light of visible light from the metal deposition film can be reduced. That is, according to the moisture-permeable waterproof sheet for building materials, after securing the moisture-permeable waterproofness, infrared rays can be sufficiently reflected, and the emission of regular reflection light of visible light can be reduced.
- the emission of the regular reflection light of the visible light can be reduced, it is possible to sufficiently suppress the glare caused by the sunlight reflection to the worker, and the working safety of the worker can be sufficiently enhanced.
- the light-shielding particles have an average particle size of 5 to 300 nm, the emission of regular reflection light of visible light can be sufficiently suppressed, and glare caused by sunlight reflection can be sufficiently suppressed.
- the light shielding particles are titanium oxide particles, the emission of the specularly reflected light of visible light can be further suppressed.
- the surface protective layer has a structure in which 0.1 to 1.5 parts by mass of light shielding particles are mixed with 100 parts by mass of a thermoplastic resin, and 0.1 or more parts by mass. While being able to fully suppress the radiation
- the hole diameter (diameter) of the through hole is 0.3 to 0.7 mm, and the through hole is distributed at a rate of 500 to 1,000,000 pieces / m 2 , so sufficient moisture permeability performance is obtained. As a result, sufficiently excellent infrared reflection performance can be obtained.
- FIG. 4 is an exploded perspective view showing the moisture-permeable waterproof sheet for building materials of FIG. 3 (the description of the air-permeable adhesive resin layer 4 is omitted).
- the moisture permeable waterproof sheet (1) for a building material according to the present invention is a sheet particularly suitably used as a roof base material.
- This construction material moisture-permeable waterproof sheet (1) is waterproof and moisture-permeable on the upper surface of a non-woven fabric layer (2) having a bulk density of 0.01 g / cm 3 or more via a breathable adhesive resin layer (4). It consists of a lamination sheet body on which the porous polyolefin film layer (3) which it has is laminated.
- the air-permeable adhesive resin layer (4) is an air-permeable adhesive resin layer formed by arranging a large number of linear resins (11) in a substantially parallel shape in a plan view as shown in FIG. At least a part of the linear resin (11) in the thickness direction is impregnated in the non-woven fabric layer (2).
- adjacent linear resins (11) of the air-permeable adhesive resin layer (4) are partially welded along the length direction, and a plan view
- the welded portions (12) are arranged in a scattered state in the above. That is, the adhesive resin layer (4) is formed in a substantially mesh shape in plan view.
- Such a substantially mesh shape is caused by a subtle difference in the degree of impregnation of the resin on the surface of the non-woven fabric layer (2), even when the linear resin (11) is interposed in a substantially parallel shape.
- a porous heat shielding layer (5) formed by depositing a metal deposition film on a synthetic resin film is laminated on the upper surface of the porous polyolefin film layer (3).
- the porosity of the heat shield layer (5) can be obtained by physically forming a large number of micropores in the sheet (metal vapor deposited synthetic resin film) which is to constitute the heat shield layer (5). It is given.
- a synthetic resin protective layer (6) is laminated on the upper surface of the porous heat shielding layer (5). That is, the synthetic resin protective layer (6) is laminated on the upper surface of the metal deposition film present on the surface layer of the porous heat shielding layer (5).
- the porous polyolefin film layer (3) has waterproofness and moisture permeability, and plays a major role in expressing waterproofness and moisture permeability as a moisture-permeable waterproof sheet (1) for construction materials It is a thing.
- the porous polyolefin film layer (3) is not particularly limited, but is preferably composed of a porous polyethylene film having waterproofness and moisture permeability or a porous polypropylene film having waterproofness and moisture permeability. Among them, it is more preferable to be composed of a porous polyethylene film, and in this case, the moisture permeability can be further increased.
- the porosity of the porous polyolefin film layer (3) is imparted, for example, by containing inorganic particles (such as calcium carbonate).
- micro cracks are generated at the existing positions of inorganic particles (such as calcium carbonate) to form micro pores, and such micro pores form moisture resistance while maintaining waterproofness.
- the particle size of the inorganic particles is preferably 5 ⁇ m or less.
- the thickness of the porous polyolefin film layer (3) is preferably 20 to 100 ⁇ m. When it is 20 ⁇ m or more, sufficient elastic force to fill the gap (nail hole) generated between the nail and the film by driving the nail at the time of construction is sufficiently obtained, and nail hole sealability is sufficiently obtained. By being 100 ⁇ m or less, sufficient lightness can be ensured.
- the moisture permeability of the porous polyolefin film layer (3) (5) is preferably 1000 g / m 2 ⁇ 24 hr or more, and in this case sufficient moisture permeability as a moisture-permeable waterproof sheet (1) for building materials Therefore, it is possible to sufficiently prevent the ground plate from being corroded due to moisture.
- a nonwoven fabric having a bulk density of 0.01 g / cm 3 or more is used as the nonwoven fabric constituting the nonwoven fabric layer (2). If it is less than 0.01 g / cm 3 , the driven nail can not be pressed sufficiently and the water can not be sufficiently stopped. Among them, it is preferable to use bulk density 0.01 ⁇ 0.05g / cm 3 of the nonwoven fabric, to use further bulk density 0.02 ⁇ 0.03g / cm 3 of the nonwoven fabric particularly preferred.
- the thickness of the non-woven fabric layer (2) is preferably set to 0.5 to 3 mm.
- a thickness of 0.5 mm or more can sufficiently press the driven nail, and a thickness of 3 mm or less can reduce cost and weight.
- nonwoven fabric layer (2) For example, a spun bond nonwoven fabric, a melt blow nonwoven fabric, a needle punch nonwoven fabric etc. are mentioned. Among these, it is preferable to use a spunbond non-woven fabric or a meltblown non-woven fabric in that the water blocking effect can be further improved. Among them, it is particularly preferable to use a spunbonded nonwoven fabric made of polypropylene.
- the width (W) of the linear resin (11) in the air-permeable adhesive resin layer (4) is set to 0.5 to 3 mm (see FIG. 2). If it is less than 0.5 mm, the driven nail can not be pressed sufficiently and sufficient water blocking property can not be obtained, and if it exceeds 3 mm, sufficient moisture permeability can not be obtained.
- the width (S) of the gap (13) between the adjacent linear resins (11) and (11) in the air-permeable adhesive resin layer (4) is set to 0.1 to 1 mm (see FIG. 2). If it is less than 0.1 mm, sufficient moisture permeability can not be obtained, and if it exceeds 1 mm, the driven nail can not be sufficiently compressed, and sufficient water blocking performance can not be obtained. Among them, the width (S) of the gap (13) between the adjacent linear resins (11) and (11) is preferably set to 0.2 to 0.7 mm.
- the application amount (application amount) of the breathable adhesive resin layer (4) is preferably set to 30 to 150 g / m 2 .
- the application amount (application amount) of the air-permeable adhesive resin layer (4) is particularly preferably set to 30 to 130 g / m 2 .
- the air-permeable adhesive resin layer (4) is preferably formed using a thermoplastic resin melt-extruded into a thread by an extruder.
- a thermoplastic resin melt-extruded into a thread by an extruder since a more uniform linear resin (11) can be formed, sufficient adhesive strength can be secured.
- a thermoplastic resin into a filament by means of an extruder it is applied on the non-woven fabric layer (2), then the porous polyolefin film layer (3) is further superposed thereon,
- the moisture-permeable waterproof sheet (1) for a building material of the present invention can be manufactured by clamping pressure.
- the resin constituting the air-permeable adhesive resin layer (4) is not particularly limited, and examples thereof include olefin resins such as polyethylene, polypropylene and ethylene-vinyl acetate copolymer.
- porous heat-shielding layer (5) For example, the porous film etc. which a metal vapor deposition film vapor-deposits on a synthetic resin film are mentioned. Although it does not specifically limit as a metal seed
- synthetic resin film For example, a polyethylene film, a polypropylene film, a polyester film etc. are mentioned.
- said synthetic resin protective layer (6) Although it does not specifically limit as said synthetic resin protective layer (6), for example, a polyethylene layer, a polypropylene layer, etc. are mentioned.
- the lamination and integration of the porous polyolefin film layer (3) and the porous heat shielding layer (5), and the lamination and integration of the porous heat shielding layer (5) and the synthetic resin protective layer (6) can be carried out in any case. Also, it is preferable to carry out by adhesion, but it is not particularly limited to such an approach.
- the adhesion method is not particularly limited as long as it can be adhered while securing air permeability, and examples thereof include a dry lamination method, a wet lamination method, a heat lamination method and the like.
- the type of adhesive is also not particularly limited.
- each constitution of the nonwoven fabric layer (2), the porous polyolefin film layer (3) and the air-permeable adhesive resin layer (4) is the building material of FIG. Since it is the same as the moisture-permeable waterproof sheet (1), the description thereof is omitted.
- the heat shielding and antiglare function layer (20) comprises a thermoplastic resin base film (21) laminated on the upper side of the porous polyolefin film layer (3), and a glossy metal material on the upper side of the film (21). And a layer laminated on the upper side of the metal vapor-deposited film (22), which is a surface formed by mixing light shielding particles (23b) with a transparent thermoplastic resin (23a) A protective layer (23) is provided, and a large number of through holes (24) penetrating in the thickness direction are formed in the heat shielding and antiglare functional layer (20) (see FIGS. 3 and 4).
- infrared rays can be sufficiently reflected in the metal deposition film (22) of the heat-shielding and anti-glare functional layer (20)
- the presence of the light shielding particles (23b) and the through holes (24) of the protective layer (23) can reduce the emission of specularly reflected light of visible light from the metal vapor deposition film (22). That is, according to the moisture-permeable waterproof sheet (1) for construction materials, after securing moisture-permeable waterproofness, infrared rays can be sufficiently reflected, and emission of regular reflection light of visible light can be reduced. As described above, since the emission of the regular reflection light of the visible light can be reduced, the glare caused by the sunlight reflection to the worker can be suppressed, and the work safety of the worker can be sufficiently enhanced.
- the heat shielding antiglare function layer (20) is formed, for example, as follows. That is, first, a bright metal material is vapor-deposited on one side of a thermoplastic resin base film (21) to laminate a metal vapor-deposited film (22).
- thermoplastic resin base film (21) include, for example, stretched polypropylene (with a thickness of, for example, 20 ⁇ m).
- the glossy metal material is not particularly limited, but aluminum is preferably used in terms of good reflectivity and easy deposition.
- the thickness of the metal deposition film (22) is not particularly limited, and for example, 45 nm can be adopted.
- thermoplastic resin (23a) is not particularly limited, and examples thereof include LLDPE (linear low density polyethylene), LDPE (low density polyethylene), PET (polyethylene terephthalate), PP (polypropylene) and the like. .
- the light shielding particles (23b) are not particularly limited, and examples thereof include titanium oxide particles and calcium carbonate particles. Among them, titanium oxide particles are preferably used.
- the average particle diameter of the light shielding particles (23b) is preferably 5 to 300 nm. In this case, emission of specularly reflected light of visible light can be sufficiently suppressed.
- the thickness of the surface protective layer (23) is preferably 10 to 15 ⁇ m. While being able to fully protect the said metal vapor deposition film (22) by being 10 micrometers or more, an infrared ray can fully be reflected by being 15 micrometers or less.
- the hole diameter (diameter) of the through hole (24) is preferably 0.3 to 0.7 mm, and more preferably 0.4 to 0.6 mm.
- the arrangement ratio of the through-hole (24) is preferably being set to a ratio of from 50 to 1,000,000 / m 2, more preferably being set to a ratio 50-90 million units / m 2. Further, it is preferable that the opening (area) ratio of the heat shielding and antiglare function layer (20) by the through hole (24) is set to 10 to 15%.
- the hole diameter of the through hole is less than 0.3 mm or the arrangement ratio of the through holes is less than 500,000 / m 2, it is difficult to obtain sufficient moisture permeability, and when the hole diameter of the through hole exceeds 0.7 mm or When the arrangement ratio of the holes exceeds 1,000,000 pieces / m 2 , it is difficult to obtain sufficient infrared reflection performance.
- the linear resin (11) constituting the breathable adhesive resin layer (4) has a configuration in which it is extended along one direction (see FIG. 2), but in particular,
- the air-permeable adhesive resin is not limited to such a form, for example, by a linear resin extended along one direction and a linear resin extended along a direction substantially orthogonal to the one direction.
- a configuration (cross type) in which the layer (4) is formed may be adopted, and the claims of the present application also include the moisture permeable waterproof sheet for building materials of such a cross type embodiment.
- Example 1 30 ⁇ m-thick porous polyethylene film (3) having waterproofness and moisture-permeable property having a moisture permeability of 7000 g / m 2 ⁇ 24 hr, and a porous film obtained by depositing an aluminum deposited film on a polypropylene film having a thickness of 20 ⁇ m
- the porous heat shielding layer) (5) and the weatherproofing agent-containing polyethylene film (synthetic resin protective layer) (6) having a thickness of 12 ⁇ m are superposed in this order. , I got the surface material.
- the porous heat shielding layer (5) and the synthetic resin protective layer (6) constitute a heat shielding and antiglare functional layer.
- a polyethylene resin melt-extruded into a large number of threads by an extruder is applied to the upper surface of a polypropylene spunbond nonwoven fabric (2) having a bulk density of 0.022 g / m 3 and a thickness of 0.7 mm (70 g) after coating with / m 2, thereon, said table member superposed porous polyethylene film (3) in the lower side, followed by nipping them between rolls, for building materials moisture permeation shown in FIG. 1 I got a waterproof sheet (1).
- the width (W) of the linear resin (11) of the air-permeable adhesive resin layer (4) is 1.5 mm, and the adjacent linear resin (11)
- the gap (S) between them is 0.5 mm, and as shown in FIG. 2, in the adhesive resin layer (4), adjacent linear resins (11) were partially welded along their length direction It was a configuration.
- Example 2 to 3 Comparative Examples 1 and 2 A moisture-permeable waterproof sheet for a building material having the configuration shown in Table 1 was obtained in the same manner as Example 1, except that the material design and the like were set to the conditions shown in Table 1.
- the moisture permeability (g / m 2 ⁇ 24 hr) of the moisture-permeable waterproof sheet for each building material was determined in accordance with JIS L 1099, method A of 4.1 (a moisture permeability test method for fiber products).
- ⁇ Nail hole sealability evaluation method 80 ° C ⁇ 20% RH ⁇ 15.5 hours, -40 ° C ⁇ 0% RH ⁇ 7.5 hours, 80 ° C ⁇ 95% RH ⁇ 15.5 hours, -40 ° C ⁇ 0
- the process of sequentially placing each environment condition of% RH ⁇ 7.5 hours is one cycle, and this cycle is repeated five times.
- the moisture-permeable waterproof sheet for a building material of Examples 1 to 3 of the present invention has good moisture permeability and good nail hole sealability even after passing through severe environmental conditions. Waterproofness was obtained.
- the moisture permeable waterproof sheet for building materials of Examples 1 to 3 has a large infrared reflectance, can sufficiently reflect infrared and is excellent in thermal insulation, and has a very small visible light regular reflectance and a sun for workers. Glare due to light reflection can be sufficiently suppressed.
- Comparative Example 1 in which the gap (S) between adjacent linear resins was smaller than the specified range of the present invention, sufficient moisture permeability could not be obtained. Further, in Comparative Example 2 in which the gap (S) between the adjacent linear resins was larger than the specified range of the present invention, the nail hole sealability was insufficient after passing through severe environmental conditions.
- Example 4 An average particle diameter is 210 nm in the vapor deposition film (22) side of a thermal barrier film in which an aluminum vapor deposition film (22) of 45 nm in thickness is vapor deposited on a polypropylene film (21) of 20 ⁇ m in thickness and 100 parts by mass of LLDPE (23a)
- This laminated sheet is bonded and integrated with a surface protective film (surface protective layer) (23) having a thickness of 12 ⁇ m, which is obtained by mixing 0.6 parts by mass of titanium oxide particles (23b).
- a surface protective film surface protective layer
- a heat and antiglare function layer) (20) was obtained.
- the surface side was bonded and integrated with an olefin adhesive by a dry lamination method to obtain a surface material.
- a polyethylene resin melt-extruded into a large number of threads by an extruder is applied to the upper surface of a polypropylene spunbond nonwoven fabric (2) having a bulk density of 0.022 g / m 3 and a thickness of 0.7 mm (70 g) after coating with / m 2, thereon, said table member superposed porous polyethylene film (3) in the lower side, followed by nipping them between rolls, moisture-permeable construction material shown in FIG. 3 I got a waterproof sheet (1).
- the width (W) of the linear resin (11) of the air-permeable adhesive resin layer (4) is 1.5 mm, and the adjacent linear resin (11)
- the gap (S) between them is 0.5 mm, and as shown in FIG. 2, in the adhesive resin layer (4), adjacent linear resins (11) were partially welded along their length direction It was a configuration.
- Examples 5 to 8 A building material moisture-permeable waterproof sheet (1) having the configuration shown in Table 3 was obtained in the same manner as in Example 4 except that the material design and the like were set to the conditions shown in Table 2.
- the moisture-permeable waterproof sheets for construction materials of Examples 4 to 8 obtained as described above are evaluated based on the moisture permeability evaluation method and the nail hole sealability evaluation method, and based on the following measurement methods.
- the infrared reflectance and the visible light regular reflectance were measured. The results are shown in Table 2.
- ⁇ Infrared reflectance measurement method Each moisture-permeable waterproof sheet for construction materials was cut into 3 cm ⁇ 3 cm square (square), and this was used as a measurement sample.
- reflectance measurement is performed using an integrating sphere for infrared spectroscopy by Fourier transform infrared spectroscopy (FT-IR). The measurement area is in the range of 10 mm in the center of the measurement sample.
- the reflectance (both diffuse reflection and regular reflection) measurement was performed twice in the orthogonal direction at the central portion of the measurement sample, and the average value of two times was taken as the measurement value.
- the details of the measurement conditions are as follows.
- Measuring device IFS-66 v / S (FT-IR manufactured by Bruker, vacuum optical system)
- Light source Glover (SiC)
- Detector MCT (HgCdTe)
- Beam splitter Ge / KBr Measurement conditions Resolution: 4 cm -1 Integration count: 512 times Zero filling: 2 apodization: triangle Measurement area: 5000 to 715 cm -1 (2 to 14 ⁇ m)
- Accessories Integral sphere reference sample for transmittance and reflectance measurement: diffuse-gold (manufactured by Labsphere) [diffuse reflection component] Au deposited film (valued) [regular reflection component] Incident angle: 10 ° Spot diameter of light: about ⁇ 10 mm Repeatability: about ⁇ 1% Specular trap used [during diffuse reflection component measurement].
- ⁇ Visible ray regular reflectance measurement method Each moisture-permeable waterproof sheet for construction materials was cut into 3 cm ⁇ 3 cm square (square), and this was used as a measurement sample. This measurement is to perform regular reflectance measurement using an integrating sphere. The measurement area is in the range of 10 mm in the center of the measurement sample.
- Measuring device UV3101PC type self-recording spectrophotometer (manufactured by Shimadzu Corporation) Slit width: 30 nm Slit program: Normal (Normal) Measurement speed: SLOW (about 4 Points / sec)
- Light source Halogen lamp (340 nm or more) Deuterium lamp (340 nm or less)
- Detector PMT (860 nm or less)
- PbS over 860 nm
- Deputy white board BaSO 4 Incident angle: 7 ° Standard white plate: made by Labsphere [diffuse reflection component]
- Al deposition mirror Priced by Toray Industries [regular reflection component]
- Accessory Large-sized sample chamber (60 ⁇ ) [transmittance spectrum] Large integrating sphere (150 ⁇ ) [reflectance spectrum] Data processor (MBC17JH20 / PC9801).
- the moisture-permeable waterproof sheet for a building material of Examples 4 to 8 of the present invention can obtain good moisture permeability and sufficient nail hole sealability even after passing through severe environmental conditions. Waterproofness was obtained.
- the moisture permeable waterproof sheet for building materials of Examples 4 to 8 has a large infrared reflectance, can sufficiently reflect infrared and is excellent in heat shielding properties, and has a very small visible light regular reflectance and a sunlight ray for workers. Glare due to reflection can be sufficiently suppressed.
- the moisture-permeable waterproof sheet for building materials of the present invention is used, for example, as a base material for construction, and is particularly suitably used as a roof base material.
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Abstract
Description
前記不織布層の上側に積層された、防水性及び透湿性を有する多孔性ポリオレフィンフィルム層と、
前記不織布層と前記多孔性ポリオレフィンフィルム層とを接着した接着樹脂層であって、平面視において線状の樹脂が多数本略平行状に配置されて形成された通気性接着樹脂層とを備え、
前記通気性接着樹脂層における線状樹脂の幅が0.5~3mmであり、隣り合う線状樹脂の間の隙間の幅が0.1~1mmであることを特徴とする建材用透湿防水シート。
透湿度が7000g/m2・24hrである防水性及び透湿性を有する厚さ30μmの多孔性ポリエチレンフィルム(3)と、厚さ20μmのポリプロピレンフィルムにアルミニウム蒸着膜が蒸着されてなる多孔性フィルム(多孔性遮熱層)(5)と、厚さ12μmの耐候剤含有ポリエチレンフィルム(合成樹脂保護層)(6)とがこの順で重ね合わされるように各層間をドライラミネート法により接着一体化して、表材を得た。前記多孔性遮熱層(5)と前記合成樹脂保護層(6)により遮熱・防眩機能層が構成されている。
材料設計等を表1に示す条件に設定した以外は、実施例1と同様にして、表1に示す構成を備えた建材用透湿防水シートを得た。
JIS L1099の4.1のA法(繊維製品の透湿度試験方法)に準拠して、各建材用透湿防水シートの透湿度(g/m2・24hr)を求めた。
建材用透湿防水シートを、80℃×20%RH×15.5時間、-40℃×0%RH×7.5時間、80℃×95%RH×15.5時間、-40℃×0%RH×7.5時間の各環境条件下に順に置く工程を1サイクルとし、これを5サイクル繰り返す。
厚さ20μmのポリプロピレンフィルム(21)に厚さ45nmのアルミニウム蒸着膜(22)が蒸着されてなる遮熱フィルムの蒸着膜(22)側と、LLDPE(23a)100質量部に平均粒子径が210nmである酸化チタン粒子(23b)が0.6質量部混合されてなる厚さ12μmの表面保護フィルム(表面保護層)(23)とを、ホットメルトラミネート法により接着一体化した後、この積層シートに厚さ方向に貫通する0.5mm径の貫通孔(24)を60万個/m2の配置割合で開口面積率11.8%で穿設することによって、遮熱・防眩シート(遮熱・防眩機能層)(20)を得た。
材料設計等を表2に示す各条件に設定した以外は、実施例4と同様にして、表3に示す構成を備えた建材用透湿防水シート(1)を得た。
各建材用透湿防水シートを3cm×3cm角(正方形)に切り出し、これを測定試料として用いた。本測定は、フーリエ変換赤外分光法(FT-IR)により赤外分光用積分球を用いて反射率測定を行うものである。測定エリアは、測定試料の中央部のφ10mmの範囲である。測定試料の中央部において直交方向に2回反射率(拡散反射と正反射の両方)測定を行い、2回の平均値を測定値とした。測定条件の詳細は以下のとおりである。
測定装置:IFS-66v/S(Bruker社製FT-IR、真空光学系)
光源:グローバー(SiC)
検知器:MCT(HgCdTe)
ビームスプリッター:Ge/KBr
測定条件
分解能:4cm-1
積算回数:512回
ゼロフィリング:2回
アポダイゼーション:三角形
測定領域:5000~715cm-1(2~14μm)
測定温度:室温(約25℃)
付属装置:透過率・反射率測定用積分球
参照試料:diffuse-gold(Labsphere社製)[拡散反射成分]
Au蒸着膜(値付けを行ったもの)[正反射成分]
入射角:10°
光のスポット径:約φ10mm
繰り返し精度:約±1%
スペキュラートラップ使用[拡散反射成分測定時]。
各建材用透湿防水シートを3cm×3cm角(正方形)に切り出し、これを測定試料として用いた。本測定は、積分球を用いて正反射率測定を行うものである。測定エリアは、測定試料の中央部のφ10mmの範囲である。
測定装置:UV3101PC型自記分光光度計(島津製作所製)
スリット幅:30nm
スリットプログラム:ノーマル(Normal)
測定速度:SLOW(約4Points/sec)
光源:ハロゲンランプ(340nm以上)
重水素ランプ(340nm以下)
検出器:PMT(860nm以下)
PbS(860nm以上)
副白板:BaSO4
入射角:7°
標準白色板:Labsphere社製)[拡散反射成分]
Al蒸着鏡:東レ社による値付け[正反射成分]
付属装置:大型試料室(60φ)[透過率スペクトル]
大型積分球(150φ)[反射率スペクトル]
データ処理装置(MBC17JH20/PC9801)。
2…不織布層
3…多孔性ポリオレフィンフィルム層
4…通気性接着樹脂層
5…多孔性遮熱層
6…合成樹脂保護層
11…線状樹脂
12…溶着部
13…隣り合う線状樹脂の間の隙間
20…遮熱・防眩機能層
21…熱可塑性樹脂フィルム
22…金属蒸着膜
23…表面保護層
23a…熱可塑性樹脂
23b…遮光粒子
24…貫通孔
S…隙間の幅
W…線状樹脂の幅
Claims (13)
- かさ密度が0.01g/cm3以上の不織布層と、
前記不織布層の上側に積層された、防水性及び透湿性を有する多孔性ポリオレフィンフィルム層と、
前記不織布層と前記多孔性ポリオレフィンフィルム層とを接着した接着樹脂層であって、平面視において線状の樹脂が多数本略平行状に配置されて形成された通気性接着樹脂層とを備え、
前記通気性接着樹脂層における線状樹脂の幅が0.5~3mmであり、隣り合う線状樹脂の間の隙間の幅が0.1~1mmであることを特徴とする建材用透湿防水シート。 - 前記線状樹脂の厚さ方向の少なくとも一部が前記不織布層に含浸されていることを特徴とする請求項1に記載の建材用透湿防水シート。
- 前記通気性接着樹脂層において隣り合う線状樹脂同士がその長さ方向に沿って部分的に溶着していることを特徴とする請求項1に記載の建材用透湿防水シート。
- 前記通気性接着樹脂層は、熱可塑性樹脂を押出機により糸状に溶融押出したものを用いて形成されたものである請求項1に記載の建材用透湿防水シート。
- 前記不織布層は、スパンボンド不織布またはメルトブロー不織布で形成されている請求項1に記載の建材用透湿防水シート。
- 前記スパンボンド不織布はポリオレフィン製である請求項5に記載の建材用透湿防水シート。
- 前記多孔性ポリオレフィンフィルム層の上側に、合成樹脂フィルムに金属蒸着膜が蒸着されてなる多孔性遮熱層が積層されている請求項1に記載の建材用透湿防水シート。
- 前記多孔性遮熱層の上側に合成樹脂保護層が積層されている請求項7に記載の建材用透湿防水シート。
- 前記多孔性ポリオレフィンフィルム層の上側に熱可塑性樹脂フィルムが積層され、該熱可塑性樹脂フィルムの上側に光沢金属材料が蒸着されてなる金属蒸着膜が設けられ、該金属蒸着膜の上側に透明の熱可塑性樹脂に遮光粒子が混合されてなる表面保護層が積層され、これら熱可塑性樹脂フィルム、金属蒸着膜及び表面保護層で構成される遮熱・防眩機能層に厚さ方向に貫通する貫通孔が多数形成されている請求項1に記載の建材用透湿防水シート。
- 前記遮光粒子の平均粒径が5~300nmである請求項9に記載の建材用透湿防水シート。
- 前記遮光粒子が酸化チタン粒子である請求項9に記載の建材用透湿防水シート。
- 前記表面保護層は、前記熱可塑性樹脂100質量部に対し前記遮光粒子が0.1~1.5質量部混合されてなる請求項9に記載の建材用透湿防水シート。
- 前記貫通孔の孔径が0.3~0.7mmであり、前記貫通孔は50~100万個/m2の割合で分布する請求項9に記載の建材用透湿防水シート。
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Publication number | Publication date |
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JP5290797B2 (ja) | 2013-09-18 |
TW201041742A (en) | 2010-12-01 |
CN102317072B (zh) | 2015-08-19 |
JP2010184451A (ja) | 2010-08-26 |
TWI485068B (zh) | 2015-05-21 |
US20120094067A1 (en) | 2012-04-19 |
CN102317072A (zh) | 2012-01-11 |
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