WO2021251021A1 - Waterproof sheet - Google Patents

Waterproof sheet Download PDF

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Publication number
WO2021251021A1
WO2021251021A1 PCT/JP2021/016872 JP2021016872W WO2021251021A1 WO 2021251021 A1 WO2021251021 A1 WO 2021251021A1 JP 2021016872 W JP2021016872 W JP 2021016872W WO 2021251021 A1 WO2021251021 A1 WO 2021251021A1
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WO
WIPO (PCT)
Prior art keywords
waterproof sheet
resin
layer
thickness
adhesive
Prior art date
Application number
PCT/JP2021/016872
Other languages
French (fr)
Japanese (ja)
Inventor
大介 川西
Original Assignee
日東電工株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日東電工株式会社 filed Critical 日東電工株式会社
Priority to CN202180035861.1A priority Critical patent/CN115667441A/en
Publication of WO2021251021A1 publication Critical patent/WO2021251021A1/en

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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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear

Definitions

  • the present invention relates to a waterproof sheet.
  • a waterproof sheet is wrapped around the joint portion from the viewpoint of closing the joint portion between the jacket covers covering the pipes of a factory or the like to improve the waterproofness of the pipes.
  • the waterproof sheet is a waterproof sheet having an adhesive surface to be adhered to an adherend and a back surface opposite to the adhesive surface, and has the adhesive surface and is composed of an adhesive.
  • the waterproof sheet is used not only for the joints between the jacket covers but also for closing the gaps (joints) between the members, but it may be difficult to attach the waterproof sheet at this time as well. Therefore, a waterproof sheet having excellent workability can be required. However, a sufficient study has not been made on a waterproof sheet having excellent workability.
  • the waterproof sheet according to the present invention is a waterproof sheet having an adhesive surface to be adhered to an adherend and a back surface opposite to the adhesive surface. Bending is 5 gf ⁇ cm 2 / cm or less, It comprises a pressure-sensitive adhesive layer having the adhesive surface and formed of an adhesive, and a sheet body which is in contact with the pressure-sensitive adhesive layer from the back surface side and has one or more layers.
  • the sheet body contains one or more metal layers made of metal.
  • Schematic cross-sectional view of a waterproof sheet and a release paper according to this embodiment Schematic cross-sectional view of a waterproof sheet and a release paper according to this embodiment. Schematic cross-sectional view of a waterproof sheet and a release paper according to this embodiment. Schematic cross-sectional view of a waterproof sheet and a release paper according to this embodiment.
  • the waterproof sheet 1 according to the present embodiment has an adhesive surface 11 to be adhered to an adherend and a back surface 12 which is a surface opposite to the adhesive surface 11. Further, the waterproof sheet 1 according to the present embodiment has the adhesive surface 11 and is in contact with the adhesive layer 2 formed of the adhesive and the adhesive layer 2 from the back surface 12 side. And prepare. Further, the waterproof sheet 1 according to the present embodiment is in the form of a tape, that is, is a waterproof tape. The waterproof sheet 1 according to the present embodiment is distributed and stored in a state where the release paper 100 is laminated on the adhesive surface 11.
  • the bending hardness of the waterproof sheet 1 according to the present embodiment is 5 gf ⁇ cm 2 / cm or less, preferably 0.1 to 4 gf ⁇ cm 2 / cm, and 0.3 to 3 gf. -It is more preferable that it is cm 2 / cm. Since the bending hardness of the waterproof sheet 1 according to the present embodiment is 5 gf ⁇ cm 2 / cm or less, the waterproof sheet 1 can be easily attached along the shape of the adherend, and as a result, it is waterproof. The sheet 1 is excellent in workability.
  • the waterproof sheet 1 according to the present embodiment has a bending angle of 0.1 gf ⁇ cm 2 / cm or more, it is possible to prevent the waterproof sheet from bending due to its own weight, and as a result, it is for waterproofing.
  • Sheet 1 has the advantage of being easy to handle.
  • the bending recovery of the waterproof sheet 1 according to the present embodiment is preferably 0.5 gf ⁇ cm / cm or more, more preferably 0.8 to 10 gf ⁇ cm / cm, and 1.0 to 7. It is more preferably 0 gf ⁇ cm / cm. Since the bending recovery of the waterproof sheet 1 according to the present embodiment is 0.5 gf ⁇ cm / cm or more, the waterproof sheet attached along the shape of the adherend is to be peeled off from the adherend. Even if a force is applied, the force that tries to return to the state that follows the shape of the adherend is generated, which makes it difficult for the waterproof sheet to come off, and as a result, the long-term reliability of waterproofing by the waterproof sheet 1 is improved.
  • the bending recovery of the waterproof sheet 1 according to the present embodiment is 10 gf ⁇ cm / cm or less, even if the waterproof sheet 1 is wrinkled while being attached to the adherend, the wrinkles are smoothed out. It will be easy. As a result, there is an advantage that the long-term reliability of waterproofing by the waterproof sheet 1 is improved.
  • the bending hardness and bending recovery can be measured by KES (Kawabata Evaluation System). Specifically, first, a test piece having a length of 10 cm and a width of 1 cm is cut out from the waterproof sheet. Then, the test piece is bent in the width direction until the bending curvature becomes 2.5 cm -1, and the repulsive stress for each bending curvature is measured. Then, when the horizontal axis is the bending curvature and the vertical axis is the repulsive stress, the inclination is obtained while the bending curvature is 0.5 to 1.5 cm -1. This inclination is defined as the bending hardness.
  • test piece is bent in the width direction until the bending curvature becomes 2.5 cm -1, and the repulsive stress when the bending curvature becomes 1.0 cm -1 (hereinafter, also referred to as "first repulsive stress”). .) Is asked.
  • the test piece is returned to the original state, and the repulsive stress when the bending curvature becomes 1.0 cm -1 (hereinafter, also referred to as "second repulsive stress”) is obtained.
  • second repulsive stress the repulsive stress when the bending curvature becomes 1.0 cm -1
  • the absolute value of the difference between the first repulsive stress and the second repulsive stress is obtained.
  • This absolute value is defined as bending recovery.
  • a pure bending tester can be used for measuring bending hardness and bending recovery, and specifically, a testing machine under the trade name "KES FB2-A" of Kato Tech Co., Ltd. can be used.
  • the sheet body 3 includes a base material layer 31 made of a woven fabric, a non-woven fabric, or a film. Further, the sheet body 3 further includes two metal layers 32 made of metal. The sheet body 3 is arranged as the metal layer 32 on the back surface 12 side of the base material layer 31 and on the adhesive surface 11 side of the base material layer 31. Includes a second metal layer 32b. Further, the sheet body 3 is formed of an adhesive and further includes two adhesive layers 33 for adhering one layer to the other. The sheet body 3 has, as the adhesive layer 33, a first adhesive layer 33a for adhering the first metal layer 32a and the base material layer 31, and a second metal layer 32b for adhering the base material layer 31. 2 Includes an adhesive layer 33b.
  • the waterproof sheet 1 of the present embodiment has a first metal layer 32a, a first adhesive layer 33a, and a base material layer 31 from the back surface 12 side to the adhesive surface 11 side.
  • the second adhesive layer 33b, the second metal layer 32b, and the pressure-sensitive adhesive layer 2 are laminated in this order.
  • the metal layer 32 may be one layer.
  • the metal layer 32, the adhesive layer 33, the base material layer 31, and the adhesive layer 2 are laminated in this order from the back surface 12 side to the adhesive surface 11 side. It may be a laminated body.
  • the waterproof sheet 1 according to the present embodiment may have three or more metal layers. From the viewpoint of enhancing flame resistance, it is preferable that the waterproof sheet 1 according to the present embodiment includes two or more metal layers 32.
  • the base material layer 31 is made of a woven fabric, a non-woven fabric, or a film.
  • the base material layer 31 is the thickest layer except for the metal layer 32 and the pressure-sensitive adhesive layer 2.
  • the woven fabric is made of fibers.
  • the fiber constituting the woven fabric include glass fiber, polyethylene terephthalate fiber, polyolefin fiber (for example, polyethylene fiber and the like) and the like.
  • the warp density of the woven fabric is preferably 3 to 60 threads / 25 mm, more preferably 5 to 30 threads / 25 mm.
  • the waterproof sheet 1 according to the present embodiment has an advantage that the bending hardness tends to be small because the warp yarn density of the woven fabric is 60 threads / 25 mm or less, and as a result, the workability is improved.
  • the waterproof sheet 1 since the warp yarn density of the woven fabric is 3 threads / 25 mm or more, the tensile strength of the waterproof sheet tends to be high.
  • the waterproof sheet 1 is less likely to be torn, and as a result, has the advantage that the long-term reliability of waterproofing by the waterproof sheet 1 is improved.
  • the weft density of the woven fabric is preferably 3 to 60 threads / 25 mm, more preferably 5 to 30 threads / 25 mm.
  • the waterproof sheet 1 according to the present embodiment has an advantage that the weft density of the woven fabric is 60 threads / 25 mm or less, so that the bending hardness tends to be small, and as a result, the workability is improved.
  • the waterproof sheet 1 since the weft density of the woven fabric is 3 threads / 25 mm or more, the tensile strength of the waterproof sheet tends to be high.
  • the waterproof sheet 1 is less likely to be torn, and as a result, has the advantage that the long-term reliability of waterproofing by the waterproof sheet 1 is improved.
  • the non-woven fabric is made of fibers.
  • the non-woven fabric is prepared by preparing two sheets in which the longitudinal directions of the fibers are aligned by stretching and fiberizing the film made of polyolefin, and laminating the two sheets so that the longitudinal directions of the fibers are orthogonal to each other. It is a concept that also includes. It is commercially available as a Warif® manufactured by JX ANCI.
  • Examples of the fibers constituting the non-woven fabric include polyolefin fibers (for example, polyethylene fibers) and the like.
  • the film is formed of one or more resins selected from the group consisting of polyethylene terephthalate resin and polyethylene resin.
  • Examples of the metal constituting the metal layer 32 include aluminum, stainless steel, and titanium. Examples of the stainless steel include SUS and the like.
  • Examples of the material constituting the adhesive of the adhesive layer 33 include polyethylene and the like.
  • Examples of the polyethylene include linear polyethylene (linear low density polyethylene, L-LDPE) and the like.
  • the pressure-sensitive adhesive of the pressure-sensitive adhesive layer 2 is preferably a solid pressure-sensitive adhesive.
  • the solid pressure-sensitive adhesive is a pressure-sensitive adhesive that does not substantially contain a solvent, a so-called non-solvent-based pressure-sensitive adhesive.
  • the flow viscosity of the solid pressure-sensitive adhesive is preferably 1000 to 50,000 Pa ⁇ s.
  • the apparent viscosity measured in accordance with JIS K 7210-1: 2014 (test conditions: load 40 kg (load pressure 42 kgf / cm 2 ), measurement temperature 60 ° C.) can be used as the flow viscosity.
  • the flow viscosity can be measured using, for example, a flow characteristic evaluation device (“Flow Tester CFT-500D”, manufactured by Shimadzu Corporation).
  • the pressure-sensitive adhesive preferably contains a rubber component. Further, the pressure-sensitive adhesive may contain a softening agent, a tackifier, a filler, a cross-linking agent, an antiaging agent, a plasticizer and the like.
  • the rubber component examples include natural rubber, butyl rubber, polyisobutylene, butadiene rubber, chloroprene rubber, styrene / butadiene rubber, acrylonitrile / butadiene rubber, styrene / ethylene / butadiene / styrene rubber, styrene / isoprene / styrene rubber, and isoprene rubber.
  • natural rubber butyl rubber, polyisobutylene, butadiene rubber, chloroprene rubber, styrene / butadiene rubber, acrylonitrile / butadiene rubber, styrene / ethylene / butadiene / styrene rubber, styrene / isoprene / styrene rubber, and isoprene rubber.
  • Styrene-butadiene-styrene rubber ethylene / propylene rubber, acrylic rubber, silicone rubber, urethane rubber, vinyl alkyl ether rubber, polyvinyl alcohol rubber, polyvinylpyrrolidone rubber, polyacrylamide rubber, cellulose rubber and the like.
  • the rubber component only one kind may be used, or two or more kinds may be used. Butyl rubber, isoprene rubber, and natural rubber are preferable as the rubber component.
  • Butyl rubber is a concept that also includes a copolymer of isobutylene and isoprene (isobutylene / isoprene rubber).
  • examples of the type of butyl rubber include regenerated butyl rubber and synthetic butyl rubber.
  • the butyl rubber only one type may be used, or two or more types may be used. In consideration of workability and the like, the butyl rubber is preferably recycled butyl rubber.
  • the softener may impart good tackiness to the pressure-sensitive adhesive layer.
  • the softener include paraffins, waxes, naphthenes, aromas, asphalts, drying oils (eg, flaxseed oil), animal and vegetable oils, petroleum oils (eg, process oils), and the like.
  • drying oils eg, flaxseed oil
  • animal and vegetable oils eg, petroleum oils (eg, process oils), and the like.
  • examples thereof include polybutene, low molecular weight polyethylene glycol, phthalates, phosphate esters, stearic acid or its esters, alkyl sulfonic acid esters and the like.
  • the softener only one kind may be used, or two or more kinds may be used.
  • the tackifier may be optionally blended in order to improve the adhesive strength of the pressure-sensitive adhesive layer and to facilitate the softening of the rubber component at high temperatures.
  • Examples of the tackifier include petroleum-based resins, phenol-based resins, rosin-based resins, and terpene-based resins. As the tackifier, only one kind may be used, or two or more kinds may be used.
  • the filler is optionally formulated to reinforce the pressure-sensitive adhesive layer.
  • the filler include calcium carbonate (for example, heavy calcium carbonate, light calcium carbonate, etc.), talc, titanium oxide, carbon black, silica, magnesium oxide, and the like.
  • the filler only one type may be used, or two or more types may be used.
  • the content ratio of the rubber component in the pressure-sensitive adhesive is preferably 3% by mass to 70% by mass, more preferably 5% by mass to 60% by mass, still more preferably 7% by mass to 50% by mass, and particularly preferably. Is 10% by mass to 40% by mass.
  • the waterproof sheet of the present embodiment can be more excellent in unevenness-following property and durability.
  • the content ratio of butyl rubber in the rubber component is preferably 50% by mass to 100% by mass, more preferably 60% by mass to 100% by mass, still more preferably 70% by mass to 100% by mass, and particularly preferably. It is 80% by mass to 100% by mass.
  • the waterproof sheet according to the present embodiment can be excellent in unevenness followability and durability.
  • the content ratio of the softening agent is preferably 30 parts by mass to 300 parts by mass, more preferably 50 parts by mass to 200 parts by mass, and further preferably 80 parts by mass to 150 parts by mass with respect to 100 parts by mass of the rubber component. It is by mass, and particularly preferably 105 parts by mass to 125 parts by mass or less.
  • the content ratio of the tackifier is preferably 5 parts by mass to 500 parts by mass, more preferably 8 parts by mass to 300 parts by mass, and further preferably 10 parts by mass to 100 parts by mass with respect to 100 parts by mass of the rubber component. It is 200 parts by mass, and particularly preferably 30 parts by mass to 70 parts by mass.
  • the content ratio of the filler is preferably 20 parts by mass to 600 parts by mass, more preferably 30 parts by mass to 500 parts by mass, and further preferably 50 parts by mass to 400 parts by mass with respect to 100 parts by mass of the rubber component. It is a part by mass, and particularly preferably 100 parts by mass to 300 parts by mass.
  • the sheet body 3 is made of resin and is arranged on the back side of at least one of the metal layers 32.
  • the back side resin layer 34 may be provided.
  • the back surface side resin layer 34 is arranged on the back surface side of all the layers of the metal layer 32.
  • the waterproof sheet 1 of the present embodiment has a back surface side resin layer 34, a first metal layer 32a, and a first from the back surface 12 side to the adhesive surface 11 side.
  • the adhesive layer 33a, the base material layer 31, the second adhesive layer 33b, the second metal layer 32b, and the adhesive layer 2 are laminated in this order.
  • the back surface side resin layer 34 can be formed by using a coating agent.
  • the back side resin layer 34 is one or more selected from the group consisting of acrylic resin, epoxy resin, polyethylene terephthalate resin, polyethylene resin, polyethylene naphthalate resin, polypropylene resin, urethane resin, fluororesin, and silicone resin. Contains resin.
  • the waterproof sheet 1 according to the present embodiment has an advantage that the weather resistance and the chemical resistance are enhanced by the sheet main body 3 having the back surface side resin layer 34.
  • the sheet main body 3 has one layer of the back side resin layer 34, but in the present embodiment, the sheet main body 3 has two or more layers of the back side resin layer 34. You may.
  • the sheet body 3 is made of resin and is arranged on the adhesive surface side of at least one of the metal layers 32. It may have the bonded surface side resin layer 35.
  • the adhesive surface side resin layer 35 is arranged on the adhesive surface side with respect to all the layers of the metal layer 32. Further, the adhesive surface side resin layer 35 is formed of a film. Further, the adhesive surface side resin layer 35 is adhered to the second metal layer 32b by the third adhesive layer 33c which is the adhesive layer 33.
  • the waterproof sheet 1 of the present embodiment has a first metal layer 32a, a first adhesive layer 33a, and a base from the back surface 12 side to the adhesive surface 11 side.
  • the material layer 31, the second adhesive layer 33b, the second metal layer 32b, the third adhesive layer 33c, the adhesive surface side resin layer 35, and the adhesive layer 2 are laminated in this order.
  • the adhesive surface side resin layer 35 contains a polyethylene terephthalate resin and one or more resins selected from the group consisting of polyethylene resins.
  • the waterproof sheet 1 according to the present embodiment has an advantage that the flame resistance is enhanced by the sheet main body 3 having the adhesive surface side resin layer 35.
  • the thickness of the waterproof sheet 1 according to the present embodiment is preferably 200 to 1000 ⁇ m, more preferably 300 to 700 ⁇ m.
  • the ratio of the thickness of the sheet body 3 to the thickness of the pressure-sensitive adhesive layer 2 is preferably 1: 1. It is 20 to 2: 1, more preferably 1:10 to 5: 3. In other words, in the waterproof sheet 1 according to the present embodiment, the ratio of the thickness of the pressure-sensitive adhesive layer 2 to the thickness of the sheet body 3 (thickness of the pressure-sensitive adhesive layer 2 / thickness of the sheet body 3) is preferable. It is 0.5 to 20, more preferably 0.6 to 10.
  • the ratio of the thickness of the pressure-sensitive adhesive layer 2 to the thickness of the sheet body 3 is 0.5 or more, so that the tensile strength of the waterproof sheet tends to be high.
  • the waterproof sheet 1 is less likely to be torn, and as a result, has the advantage that the long-term reliability of waterproofing by the waterproof sheet 1 is improved.
  • the ratio of the thickness of the adhesive layer 2 to the thickness of the sheet body 3 is 20 or less, so that the waterproof sheet 1 is attached to the adherend. Even if wrinkles are formed on the surface, the wrinkles are easily smoothed out, and as a result, there is an advantage that the long-term reliability of waterproofing by the waterproof sheet 1 is improved.
  • the total thickness of the metal layer 32 (in the embodiment of FIG. 1, the total of the thickness of the first metal layer 32a and the thickness of the second metal layer 32b) and the sheet.
  • the ratio to the thickness of the main body 3 (total thickness of the metal layer 32: thickness of the sheet main body 3) is preferably 1:30 to 2: 3, and more preferably 1:20 to 1: 2. ..
  • the ratio of the total thickness of the metal layer 32 to the thickness of the sheet body 3 is It is preferably 0.03 to 0.7, more preferably 0.05 to 0.5.
  • the waterproof sheet 1 according to the present embodiment has a waterproof sheet 1 in a state of being attached to an adherend because the ratio of the total thickness of the metal layer 32 to the thickness of the sheet body 3 is 0.03 or more. Even if wrinkles are formed on the surface, the wrinkles are easily smoothed out, and as a result, there is an advantage that the long-term reliability of waterproofing by the waterproof sheet 1 is improved. Further, the waterproof sheet 1 according to the present embodiment is for waterproofing in a state of being attached to the adherend because the ratio of the total thickness of the metal layer 32 to the thickness of the sheet body 3 is 0.7 or less. Even if the sheet 1 is wrinkled, the wrinkles are easily smoothed out, and as a result, there is an advantage that the long-term reliability of waterproofing by the waterproof sheet 1 is improved.
  • the waterproof sheet 1 according to the present embodiment is suitably used as a sheet for closing gaps (joints) between members. Further, when a waterproof sheet having excellent flame resistance is required, such as when closing a joint portion between jacket covers covering pipes in a factory or the like, a waterproof sheet having two or more metal layers 32 is particularly suitable. Used for.
  • waterproof sheet according to this embodiment is configured as described above, it has the following advantages.
  • a waterproof sheet having an adhesive surface to be adhered to an adherend and a back surface opposite to the adhesive surface. Bending is 5 gf ⁇ cm 2 / cm or less, It comprises a pressure-sensitive adhesive layer having the adhesive surface and formed of an adhesive, and a sheet body which is in contact with the pressure-sensitive adhesive layer from the back surface side and has one or more layers.
  • the sheet body is a waterproof sheet containing one or more metal layers made of metal.
  • the sheet body includes a base material layer made of a woven fabric, a non-woven fabric, or a film.
  • the woven fabric is formed of one or more fibers selected from the group consisting of glass fibers, polyethylene terephthalate fibers, and polyethylene fibers.
  • the non-woven fabric is made of polyethylene fiber and is made of polyethylene fiber.
  • the waterproof sheet according to (3) above, wherein the film is made of one or more resins selected from the group consisting of polyethylene terephthalate resin and polyethylene resin.
  • the sheet body has a back surface resin layer formed of resin and arranged on the back surface side of at least one of the metal layers.
  • the back side resin layer is one or more selected from the group consisting of acrylic resin, epoxy resin, polyethylene terephthalate resin, polyethylene resin, polyethylene naphthalate resin, polypropylene resin, urethane resin, fluororesin, and silicone resin.
  • the waterproof sheet according to any one of (1) to (6) above, which contains a resin.
  • Such a waterproof sheet has an advantage that weather resistance and chemical resistance are enhanced because the sheet body has the back surface resin layer.
  • the sheet body has a resin layer on the adhesive surface side, which is formed of resin and is arranged on the adhesive surface side of at least one of the metal layers.
  • the waterproof sheet according to any one of (1) to (7) above, wherein the adhesive surface side resin layer contains a polyethylene terephthalate resin and one or more resins selected from the group consisting of polyethylene resin.
  • Such a waterproof sheet has an advantage that the flame resistance is enhanced by the sheet body having the adhesive surface side resin layer.
  • Such a waterproof sheet has a ratio of the thickness of the sheet body to the thickness of the pressure-sensitive adhesive layer (thickness of the sheet body: thickness of the pressure-sensitive adhesive layer) of 1: 20 to 2: 1.
  • the tensile strength of the waterproof sheet tends to increase.
  • the waterproof sheet is less likely to be torn, and as a result, has the advantage of improving the long-term reliability of waterproofing by the waterproof sheet. Further, even if wrinkles are formed on the waterproof sheet while attached to the adherend, the wrinkles are easily smoothed out, and as a result, the long-term reliability of waterproofing by the waterproof sheet is improved. Have.
  • the ratio of the total thickness of the metal layer to the thickness of the sheet body (total thickness of the metal layer: thickness of the sheet body) is 1:30 to 2: 3, the above (1) to (1).
  • the waterproof sheet according to any one of 12).
  • the ratio of the total thickness of the metal layer to the thickness of the sheet body is 1:30 to 2: 3.
  • the waterproof sheet according to the present invention is not limited to the above embodiment. Further, the waterproof sheet according to the present invention is not limited by the above-mentioned action and effect. Further, the waterproof sheet according to the present invention can be variously modified without departing from the gist of the present invention.
  • Example 1 The following materials were prepared as the materials for the seat body.
  • fiber glass fiber
  • warp yarn density 16/25 mm
  • weft density 15/25 mm
  • Thickness 110 ⁇ m
  • the aluminum sheet and the woven fabric were adhered to each other via an adhesive to prepare a sheet body in which a metal layer (aluminum layer), an adhesive layer (thickness: 25 ⁇ m), and a base material layer were laminated in this order. ..
  • -S-butyl recycled rubber Mooney viscosity ML1 + 4 (100 ° C) 44 ⁇ 6, manufactured by Akira Gosho Co., Ltd.
  • Diana Process Oil PW-90 Petroleum hydrocarbon, pour point -10 °C or less, manufactured by Idemitsu Kosan Co., Ltd. Materials were mixed to obtain a pressure-sensitive adhesive.
  • the adhesive was applied to the base material layer of the sheet body at 80 ° C. to form an adhesive layer, and a tape-shaped waterproof sheet was obtained.
  • Example 2 A first coating agent containing an acrylic resin and a second coating agent containing a urethane resin were prepared. Then, the second back surface side resin layer is formed by applying the second coating agent to the metal layer of the waterproof sheet of Example 1, and the first coating agent is applied to the second back surface side resin layer. 1 The back side resin layer was formed. As a result, the first back surface side resin layer (thickness: 2.5 ⁇ m), the second back surface side resin layer (thickness: 2.5 ⁇ m), the metal layer (aluminum layer), the adhesive layer (thickness: 25 ⁇ m), and the base material layer. , And a tape-shaped waterproof sheet in which the adhesive layers were laminated in this order was obtained.
  • Example 3 The same as in Example 1 except that a woven fabric (fiber: polyethylene terephthalate fiber (PET fiber), warp density: 16 threads / 25 mm, weft density: 15 threads / 25 mm, thickness: 110 ⁇ m) was used as the base material. Obtained a tape-shaped waterproof sheet.
  • a woven fabric fiber: polyethylene terephthalate fiber (PET fiber), warp density: 16 threads / 25 mm, weft density: 15 threads / 25 mm, thickness: 110 ⁇ m
  • Example 4 A tape-shaped waterproof sheet was obtained in the same manner as in Example 1 except that a non-woven fabric (fiber: polyethylene fiber (PE fiber), Warif (registered trademark) manufactured by JX ANCI) was used as the base material.
  • a non-woven fabric fiber: polyethylene fiber (PE fiber), Warif (registered trademark) manufactured by JX ANCI
  • Example 5 The following materials were prepared as the materials for the seat body.
  • L-LDPE L-LDPE
  • a base material fiber: glass fiber, warp yarn density: 16/25 mm, weft density: 15/25 mm, Thickness: 110 ⁇ m
  • the aluminum sheet (thickness: 20 ⁇ m), the woven fabric, and the aluminum sheet (thickness: 7 ⁇ m) are adhered to each other via an adhesive to form a metal layer (aluminum layer) (thickness: 20 ⁇ m) and an adhesive layer (thickness: 20 ⁇ m).
  • a sheet body in which a base material layer, an adhesive layer (thickness: 25 ⁇ m), and a metal layer (aluminum layer) (thickness: 7 ⁇ m) were laminated in this order was produced.
  • the adhesive of Example 1 was applied to the metal layer (thickness: 7 ⁇ m) of the sheet body at 80 ° C. to form an adhesive layer, and a tape-shaped waterproof sheet was obtained.
  • Example 6 The following materials were prepared as the materials for the adhesive.
  • -S-butyl recycled rubber Mooney viscosity ML1 + 4 (100 ° C) 44 ⁇ 6, manufactured by Akira Gosho Co., Ltd.
  • a tape-shaped waterproof sheet was obtained in the same manner as in Example 5 except that this adhesive was used.
  • Example 7 A first coating agent containing an acrylic resin and a second coating agent containing a urethane resin were prepared. Then, the second coating agent is applied to the metal layer (thickness: 20 ⁇ m) of the waterproof sheet of Example 5 to form the second back surface side resin layer, and the first coating agent is applied to the second back surface side resin layer. By coating, the first back surface side resin layer was formed. As a result, the first back surface side resin layer (thickness: 2.5 ⁇ m), the second back surface side resin layer (thickness: 2.5 ⁇ m), the metal layer (thickness: 20 ⁇ m), the adhesive layer (thickness: 25 ⁇ m), and the base material. A tape-shaped waterproof sheet in which a layer, an adhesive layer (thickness: 25 ⁇ m), a metal layer (thickness: 7 ⁇ m), and an adhesive layer were laminated in this order was obtained.
  • Example 8 The same as in Example 5 except that a woven fabric (fiber: polyethylene terephthalate fiber (PET fiber), warp density: 15 threads / 25 mm, weft density: 15 threads / 25 mm, thickness: 110 ⁇ m) was used as the base material. Obtained a tape-shaped waterproof sheet.
  • a woven fabric fiber: polyethylene terephthalate fiber (PET fiber), warp density: 15 threads / 25 mm, weft density: 15 threads / 25 mm, thickness: 110 ⁇ m
  • Example 9 The following materials were prepared as the materials for the seat body.
  • Adhesive Adhesive containing linear polyethylene (L-LDPE) ⁇ Textile as a base material (fiber: glass fiber, warp yarn density: 16/25 mm, weft density: 15/25 mm, thickness: 110 ⁇ m)
  • the aluminum sheet (thickness: 20 ⁇ m), the woven fabric, the aluminum sheet (thickness: 7 ⁇ m), and the PET film are adhered to each other via an adhesive to form a metal layer (aluminum layer) (thickness: 20 ⁇ m).
  • a sheet body in which an adhesive layer (thickness: 25 ⁇ m), a base material layer, an adhesive layer (thickness: 25 ⁇ m), a metal layer (aluminum layer) (thickness: 7 ⁇ m), and a resin layer on the adhesive surface side are laminated in this order is produced. did. Then, with a calendar roll, the adhesive of Example 1 was applied to the adhesive surface side resin layer of the sheet body at 80 ° C. to form an adhesive layer, and a tape-shaped waterproof sheet was obtained.
  • the waterproof sheet includes a polyethylene terephthalate film (PET film) layer (thickness: 25 ⁇ m), an adhesive layer (thickness: 3 ⁇ m), an aluminum sheet (thickness: 25 ⁇ m), an adhesive layer (thickness: 3 ⁇ m), and a polyethylene terephthalate.
  • PET film polyethylene terephthalate film
  • PET film layer (thickness: 25 ⁇ m), adhesive layer (thickness: 3 ⁇ m), aluminum sheet (thickness: 10 ⁇ m), adhesive layer (thickness: 3 ⁇ m), polyethylene terephthalate film (PET film) layer (thickness:: 25 ⁇ m) and a tape-shaped waterproof sheet (manufactured by 3M) in which an aluminum sheet (thickness: 8 ⁇ m) is laminated.
  • the pressure-sensitive adhesive layer contains an acrylic copolymer.
  • Two tape-shaped waterproof sheets were prepared (first waterproof sheet and second waterproof sheet). Next, the first waterproof sheet and the second waterproof sheet were adhered so that the adhesive layers faced each other at the half portion in the length direction. Then, blue cobalt chloride paper (length 10 mm x width 30 mm) was attached near the center of the adhesive layer (length 30 mm x width 50 mm) of the remaining portion of the first waterproof sheet and the second waterproof sheet. Next, an acrylic plate (length 50 mm x width 100 mm) is placed on the remaining part of the pressure-sensitive adhesive layer (length 30 mm x width 50 mm) so as to cover the entire adhesive layer (length 30 mm x width 50 mm) of the remaining portion. A sample was obtained by pasting.
  • the sample is allowed to stand at room temperature (23 ° C.) and a humidity of 50%, and 3 hours after the standing, the presence or absence of color change of the cobalt chloride paper is visually confirmed and evaluated according to the following criteria. Did. The blue cobalt chloride paper turns red when it comes in contact with water. X: Cobalt chloride paper turned red. ⁇ : Cobalt chloride paper remained blue.
  • ⁇ Chemical resistance> With the waterproof sheet wrapped around the seam so as to close the seam between the jacket covers that cover the factory piping, a hydrochloric acid aqueous solution (hydrochloric acid concentration: 10% by mass) is sprayed on the outside of the waterproof sheet for 24 hours. Later, the change in the condition of the outside of the waterproof sheet was visually confirmed and evaluated according to the following criteria. X: It was confirmed that the aluminum sheet on the back side had melted, or it was confirmed that the waterproof sheet had whitened. ⁇ : It could not be confirmed that the aluminum sheet on the back side had melted, and it could not be confirmed that the waterproof sheet had whitened. Further, the hydrochloric acid aqueous solution (hydrochloric acid concentration: 10% by mass) was changed to a sodium hydroxide aqueous solution (sodium hydroxide concentration: 10% by mass), and the same evaluation test was conducted.
  • the UL94HF test (revised) is basically carried out in accordance with UL94HF (horizontal combustion test of foam material) (ISO3582, JIS K 6400-6, ASTM D4986), and the combustion condition is visually confirmed and evaluated according to the following criteria. Did. However, a burner with a wing tip was used for ignition in the UL94HF test, but a torch burner (CB-TC-OC) manufactured by Iwatani Corp. was used for ignition in the UL94HF test (revised) in this case.
  • X The waterproof sheet ignited within 5 seconds.
  • ⁇ The waterproof sheet did not ignite within 5 seconds.
  • FSI flame diffusion index
  • the smoke generation index (SDI) was measured according to ASTM E 84 (adhesion: 0.5 mmt zinc plate).
  • the 180 ° peeling adhesive strength was measured according to PSTC-101 (crimping time: 30 minutes, adherend: SUS304BA plate).

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  • General Engineering & Computer Science (AREA)
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  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Adhesive Tapes (AREA)

Abstract

The present invention provides a waterproof sheet having an adhesive surface to be adhered to an adherend, and a back surface that is a surface opposite to the adhesive surface. The waterproof sheet has a flexural rigidity of 5 gf·cm2/cm or less and comprises: a pressure-sensitive adhesive layer that has the adhesive surface and is formed from a pressure-sensitive adhesive; and a sheet body that is in contact with the pressure-sensitive adhesive layer from the back surface side and has one or more layers. The sheet body includes at least one metal layer formed from a metal.

Description

防水用シートWaterproof sheet 関連出願の相互参照Cross-reference of related applications
　本願は、日本国特願２０２０－１０２４３１号の優先権を主張し、引用によって本願明細書の記載に組み込まれる。 This application claims the priority of Japanese Patent Application No. 2020-102431, and is incorporated in the description of the present application by citation.
　本発明は、防水用シートに関する。 The present invention relates to a waterproof sheet.
　従来、工場等の配管を覆うジャケットカバーどうしの継ぎ目部分を塞いで、配管の防水性を高めるという観点から、前記継ぎ目部分に防水用シートが巻き付けられている。
　防水用シートとしては、被着体に接着される接着面と、該接着面とは反対の面である背面とを有する防水用シートであって、前記接着面を有し、粘着剤で構成された粘着剤層と、前記背面側から前記粘着剤層に接するシート本体とを備え、前記シート本体が金属層を含むシートが知られている（例えば、特許文献１）。 Conventionally, a waterproof sheet is wrapped around the joint portion from the viewpoint of closing the joint portion between the jacket covers covering the pipes of a factory or the like to improve the waterproofness of the pipes.
The waterproof sheet is a waterproof sheet having an adhesive surface to be adhered to an adherend and a back surface opposite to the adhesive surface, and has the adhesive surface and is composed of an adhesive. There is known a sheet having a pressure-sensitive adhesive layer and a sheet body in contact with the pressure-sensitive adhesive layer from the back surface side, and the sheet body includes a metal layer (for example, Patent Document 1).
米国特許第７，６２４，７６２号明細書U.S. Pat. No. 7,624,762
　ところで、従来の防水用シートは、ジャケットカバーどうしの継ぎ目部分に巻き付ける際に、巻き付け難いことがある。
　また、ジャケットカバーどうしの継ぎ目部分に限らず、部材同士の隙間（目地）を塞ぐのにも防水用シートが用いられるが、この際にも防水用シートを貼り付け難いことがある。
　従って、施工性に優れた防水用シートが求められ得る。
　しかし、施工性に優れた防水用シートについて、これまで十分な検討がなされていない。 By the way, it may be difficult to wind the conventional waterproof sheet around the joint portion between the jacket covers.
Further, the waterproof sheet is used not only for the joints between the jacket covers but also for closing the gaps (joints) between the members, but it may be difficult to attach the waterproof sheet at this time as well.
Therefore, a waterproof sheet having excellent workability can be required.
However, a sufficient study has not been made on a waterproof sheet having excellent workability.
　そこで、本発明は、施工性に優れた防水用シートを提供することを課題とする。 Therefore, it is an object of the present invention to provide a waterproof sheet having excellent workability.
　本発明に係る防水用シートは、被着体に接着される接着面と、該接着面とは反対の面である背面とを有する防水用シートであって、
　曲げかたさが、５ｇｆ・ｃｍ２／ｃｍ以下であり、
　前記接着面を有し、且つ、粘着剤で形成された粘着剤層と、前記背面側から前記粘着剤層に接し、１又は２以上の層を有するシート本体とを備え、
　前記シート本体には、金属で形成された金属層が１又は２以上含まれている。 The waterproof sheet according to the present invention is a waterproof sheet having an adhesive surface to be adhered to an adherend and a back surface opposite to the adhesive surface.
Bending is 5 gf · cm 2 / cm or less,
It comprises a pressure-sensitive adhesive layer having the adhesive surface and formed of an adhesive, and a sheet body which is in contact with the pressure-sensitive adhesive layer from the back surface side and has one or more layers.
The sheet body contains one or more metal layers made of metal.
本実施形態に係る防水用シート及び剥離紙の概略断面図。Schematic cross-sectional view of a waterproof sheet and a release paper according to this embodiment. 本実施形態に係る防水用シート及び剥離紙の概略断面図。Schematic cross-sectional view of a waterproof sheet and a release paper according to this embodiment. 本実施形態に係る防水用シート及び剥離紙の概略断面図。Schematic cross-sectional view of a waterproof sheet and a release paper according to this embodiment. 本実施形態に係る防水用シート及び剥離紙の概略断面図。Schematic cross-sectional view of a waterproof sheet and a release paper according to this embodiment.
　以下、添付図面を参照しつつ、本発明の一実施形態について説明する。 Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
　図１に示すように、本実施形態に係る防水用シート１は、被着体に接着される接着面１１と、該接着面１１とは反対の面である背面１２とを有する。
　また、本実施形態に係る防水用シート１は、前記接着面１１を有し、且つ、粘着剤で形成された粘着剤層２と、前記背面１２側から前記粘着剤層２に接するシート本体３とを備える。
　さらに、本実施形態に係る防水用シート１は、テープ状となっており、すなわち、防水用テープとなっている。
　なお、本実施形態に係る防水用シート１は、接着面１１に剥離紙１００が積層された状態で流通され、保管される。 As shown in FIG. 1, the waterproof sheet 1 according to the present embodiment has an adhesive surface 11 to be adhered to an adherend and a back surface 12 which is a surface opposite to the adhesive surface 11.
Further, the waterproof sheet 1 according to the present embodiment has the adhesive surface 11 and is in contact with the adhesive layer 2 formed of the adhesive and the adhesive layer 2 from the back surface 12 side. And prepare.
Further, the waterproof sheet 1 according to the present embodiment is in the form of a tape, that is, is a waterproof tape.
The waterproof sheet 1 according to the present embodiment is distributed and stored in a state where the release paper 100 is laminated on the adhesive surface 11.
　本実施形態に係る防水用シート１の曲げかたさは、５ｇｆ・ｃｍ２／ｃｍ以下であることが重要であり、０．１～４ｇｆ・ｃｍ２／ｃｍであることが好ましく、０．３～３ｇｆ・ｃｍ２／ｃｍであることがより好ましい。
　本実施形態に係る防水用シート１の前記曲げかたさは、５ｇｆ・ｃｍ２／ｃｍ以下であることにより、防水用シート１が被着体の形状に沿って貼り付けやすいものとなり、その結果、防水用シート１が施工性に優れたものとなる。
　また、本実施形態に係る防水用シート１は、前記曲げかたさが０．１ｇｆ・ｃｍ２／ｃｍ以上であることにより、防水用シートの自重で折れ曲がってしまうのを抑制でき、その結果、防水用シート１が扱いやすいという利点を有する。 It is important that the bending hardness of the waterproof sheet 1 according to the present embodiment is 5 gf · cm 2 / cm or less, preferably 0.1 to 4 gf · cm 2 / cm, and 0.3 to 3 gf. -It is more preferable that it is cm 2 / cm.
Since the bending hardness of the waterproof sheet 1 according to the present embodiment is 5 gf · cm 2 / cm or less, the waterproof sheet 1 can be easily attached along the shape of the adherend, and as a result, it is waterproof. The sheet 1 is excellent in workability.
Further, since the waterproof sheet 1 according to the present embodiment has a bending angle of 0.1 gf · cm 2 / cm or more, it is possible to prevent the waterproof sheet from bending due to its own weight, and as a result, it is for waterproofing. Sheet 1 has the advantage of being easy to handle.
　本実施形態に係る防水用シート１の曲げ回復は、０．５ｇｆ・ｃｍ／ｃｍ以上であることが好ましく、０．８～１０ｇｆ・ｃｍ／ｃｍであることがより好ましく、１．０～７．０ｇｆ・ｃｍ／ｃｍであることが更に好ましい。
　本実施形態に係る防水用シート１の曲げ回復は、０．５ｇｆ・ｃｍ／ｃｍ以上であることにより、被着体の形状に沿って貼り付けた防水用シートに、被着体から剥がそうとする力が掛かっても、被着体の形状に沿った状態に戻ろうとする力が生じることにより、防水用シートが剥がれにくくなり、その結果、防水用シート１による防水の長期の信頼性が向上するという利点を有する。
　また、本実施形態に係る防水用シート１の曲げ回復は、１０ｇｆ・ｃｍ／ｃｍ以下であることにより、被着体に張り付けた状態で防水用シート１にシワが入っても、該シワが伸ばしやすいものとなる。
　その結果、防水用シート１による防水の長期の信頼性が向上するという利点を有する。 The bending recovery of the waterproof sheet 1 according to the present embodiment is preferably 0.5 gf · cm / cm or more, more preferably 0.8 to 10 gf · cm / cm, and 1.0 to 7. It is more preferably 0 gf · cm / cm.
Since the bending recovery of the waterproof sheet 1 according to the present embodiment is 0.5 gf · cm / cm or more, the waterproof sheet attached along the shape of the adherend is to be peeled off from the adherend. Even if a force is applied, the force that tries to return to the state that follows the shape of the adherend is generated, which makes it difficult for the waterproof sheet to come off, and as a result, the long-term reliability of waterproofing by the waterproof sheet 1 is improved. Has the advantage of
Further, since the bending recovery of the waterproof sheet 1 according to the present embodiment is 10 gf · cm / cm or less, even if the waterproof sheet 1 is wrinkled while being attached to the adherend, the wrinkles are smoothed out. It will be easy.
As a result, there is an advantage that the long-term reliability of waterproofing by the waterproof sheet 1 is improved.
　なお、曲げかたさ、及び、曲げ回復は、ＫＥＳ（Ｋａｗａｂａｔａ　Ｅｂａｌｕａｔｉｏｎ　Ｓｙｓｔｅｍ）によって測定することができる。
　具体的には、まず、防水用シートから長さ１０ｃｍ、幅１ｃｍの試験片を切り出す。
　そして、幅方向に、曲げ曲率が２．５ｃｍ－１となるまで、試験片を曲げていき、曲げ曲率毎の反発応力を測定する。そして、横軸を曲げ曲率、縦軸を反発応力とした際の、曲げ曲率が０．５～１．５ｃｍ－１となる間での傾きを求める。この傾きを曲げかたさとする。
　また、幅方向に、曲げ曲率２．５ｃｍ－１となるまで、試験片を曲げていき、曲げ曲率が１．０ｃｍ－１となるときの反発応力（以下、「第１の反発応力」ともいう。）を求める。次に、試験片を元の状態に戻していき、曲げ曲率が１．０ｃｍ－１となるときの反発応力（以下、「第２の反発応力」ともいう。）を求める。そして、第１の反発応力と第２の反発応力との差の絶対値を求める。この絶対値を曲げ回復とする。
　曲げかたさ、及び、曲げ回復の測定には、純曲げ試験機を用いることができ、具体的には、カトーテック社の商品名「ＫＥＳ　ＦＢ２－Ａ」の試験機を用いることができる。 The bending hardness and bending recovery can be measured by KES (Kawabata Evaluation System).
Specifically, first, a test piece having a length of 10 cm and a width of 1 cm is cut out from the waterproof sheet.
Then, the test piece is bent in the width direction until the bending curvature becomes 2.5 cm -1, and the repulsive stress for each bending curvature is measured. Then, when the horizontal axis is the bending curvature and the vertical axis is the repulsive stress, the inclination is obtained while the bending curvature is 0.5 to 1.5 cm -1. This inclination is defined as the bending hardness.
Further, the test piece is bent in the width direction until the bending curvature becomes 2.5 cm -1, and the repulsive stress when the bending curvature becomes 1.0 cm -1 (hereinafter, also referred to as "first repulsive stress"). .) Is asked. Next, the test piece is returned to the original state, and the repulsive stress when the bending curvature becomes 1.0 cm -1 (hereinafter, also referred to as "second repulsive stress") is obtained. Then, the absolute value of the difference between the first repulsive stress and the second repulsive stress is obtained. This absolute value is defined as bending recovery.
A pure bending tester can be used for measuring bending hardness and bending recovery, and specifically, a testing machine under the trade name "KES FB2-A" of Kato Tech Co., Ltd. can be used.
　前記シート本体３は、織物、不織布、又は、フィルムで形成された基材層３１を含む。
　また、前記シート本体３は、金属で形成された金属層３２を２層さらに含む。前記シート本体３は、前記金属層３２として、前記基材層３１よりも前記背面１２側に配された第１金属層３２ａと、前記基材層３１よりも前記接着面１１側に配された第２金属層３２ｂとを含む。
　さらに、前記シート本体３は、接着剤で形成され、一の層と他の層とを接着させる接着剤層３３を２層さらに含む。前記シート本体３は、前記接着剤層３３として、第１金属層３２ａと基材層３１とを接着させる第１接着剤層３３ａと、第２金属層３２ｂと基材層３１とを接着させる第２接着剤層３３ｂとを含む。 The sheet body 3 includes a base material layer 31 made of a woven fabric, a non-woven fabric, or a film.
Further, the sheet body 3 further includes two metal layers 32 made of metal. The sheet body 3 is arranged as the metal layer 32 on the back surface 12 side of the base material layer 31 and on the adhesive surface 11 side of the base material layer 31. Includes a second metal layer 32b.
Further, the sheet body 3 is formed of an adhesive and further includes two adhesive layers 33 for adhering one layer to the other. The sheet body 3 has, as the adhesive layer 33, a first adhesive layer 33a for adhering the first metal layer 32a and the base material layer 31, and a second metal layer 32b for adhering the base material layer 31. 2 Includes an adhesive layer 33b.
　すなわち、図１に示すように、本実施形態の前記防水用シート１は、前記背面１２側から前記接着面１１側にかけて、第１金属層３２ａ、第１接着剤層３３ａ、基材層３１、第２接着剤層３３ｂ、第２金属層３２ｂ、及び、粘着剤層２がこの順に積層された積層体となっている。 That is, as shown in FIG. 1, the waterproof sheet 1 of the present embodiment has a first metal layer 32a, a first adhesive layer 33a, and a base material layer 31 from the back surface 12 side to the adhesive surface 11 side. The second adhesive layer 33b, the second metal layer 32b, and the pressure-sensitive adhesive layer 2 are laminated in this order.
　なお、本実施形態に係る防水用シート１では、図２に示すように、金属層３２が１層であってもよい。例えば、本実施形態に係る防水用シート１は、前記背面１２側から前記接着面１１側にかけて、金属層３２、接着剤層３３、基材層３１、及び、粘着剤層２がこの順に積層された積層体となっていてもよい。
　また、本実施形態に係る防水用シート１では、金属層が３層以上あってもよい。
　耐炎性を高めるという観点から、本実施形態に係る防水用シート１は、金属層３２を２層以上備えることが好ましい。 In the waterproof sheet 1 according to the present embodiment, as shown in FIG. 2, the metal layer 32 may be one layer. For example, in the waterproof sheet 1 according to the present embodiment, the metal layer 32, the adhesive layer 33, the base material layer 31, and the adhesive layer 2 are laminated in this order from the back surface 12 side to the adhesive surface 11 side. It may be a laminated body.
Further, the waterproof sheet 1 according to the present embodiment may have three or more metal layers.
From the viewpoint of enhancing flame resistance, it is preferable that the waterproof sheet 1 according to the present embodiment includes two or more metal layers 32.
　前記基材層３１は、織物、不織布、又は、フィルムで形成されている。
　本実施形態に係る防水用シート１において、前記基材層３１は、金属層３２及び粘着剤層２を除いて、最も厚い層である。 The base material layer 31 is made of a woven fabric, a non-woven fabric, or a film.
In the waterproof sheet 1 according to the present embodiment, the base material layer 31 is the thickest layer except for the metal layer 32 and the pressure-sensitive adhesive layer 2.
　前記織物は、繊維で形成されている。
　前記織物を構成する繊維としては、例えば、ガラス繊維、ポリエチレンテレフタラート繊維、ポリオレフィン繊維（例えば、ポリエチレン繊維など）などが挙げられる。
　前記織物のたて糸密度は、好ましくは３～６０本／２５ｍｍ、より好ましくは５～３０本／２５ｍｍである。
　本実施形態に係る防水用シート１は、前記織物のたて糸密度が６０本／２５ｍｍ以下であることにより、曲げかたさが小さいものとなりやすく、その結果、施工性が向上するという利点を有する。
　また、本実施形態に係る防水用シート１は、前記織物のたて糸密度が３本／２５ｍｍ以上であることにより、防水用シートの引張強さが高くなりやすくなる。そして、防水用シート１は、破れにくいものとなり、その結果、防水用シート１による防水の長期の信頼性が向上するという利点を有する。
　前記織物のよこ糸密度は、好ましくは３～６０本／２５ｍｍ、より好ましくは５～３０本／２５ｍｍである。
　本実施形態に係る防水用シート１は、前記織物のよこ糸密度が６０本／２５ｍｍ以下であることにより、曲げかたさが小さいものとなりやすく、その結果、施工性が向上するという利点を有する。
　また、本実施形態に係る防水用シート１は、前記織物のよこ糸密度が３本／２５ｍｍ以上であることにより、防水用シートの引張強さが高くなりやすくなる。そして、防水用シート１は、破れにくいものとなり、その結果、防水用シート１による防水の長期の信頼性が向上するという利点を有する。 The woven fabric is made of fibers.
Examples of the fiber constituting the woven fabric include glass fiber, polyethylene terephthalate fiber, polyolefin fiber (for example, polyethylene fiber and the like) and the like.
The warp density of the woven fabric is preferably 3 to 60 threads / 25 mm, more preferably 5 to 30 threads / 25 mm.
The waterproof sheet 1 according to the present embodiment has an advantage that the bending hardness tends to be small because the warp yarn density of the woven fabric is 60 threads / 25 mm or less, and as a result, the workability is improved.
Further, in the waterproof sheet 1 according to the present embodiment, since the warp yarn density of the woven fabric is 3 threads / 25 mm or more, the tensile strength of the waterproof sheet tends to be high. The waterproof sheet 1 is less likely to be torn, and as a result, has the advantage that the long-term reliability of waterproofing by the waterproof sheet 1 is improved.
The weft density of the woven fabric is preferably 3 to 60 threads / 25 mm, more preferably 5 to 30 threads / 25 mm.
The waterproof sheet 1 according to the present embodiment has an advantage that the weft density of the woven fabric is 60 threads / 25 mm or less, so that the bending hardness tends to be small, and as a result, the workability is improved.
Further, in the waterproof sheet 1 according to the present embodiment, since the weft density of the woven fabric is 3 threads / 25 mm or more, the tensile strength of the waterproof sheet tends to be high. The waterproof sheet 1 is less likely to be torn, and as a result, has the advantage that the long-term reliability of waterproofing by the waterproof sheet 1 is improved.
　前記不織布は、繊維で形成されている。
　前記不織布は、ポリオレフィン製のフィルムが延伸されて繊維化されたことにより繊維の長手方向が揃ったシートを２枚用意し、２枚の該シートを繊維の長手方向が直交するように積層したものも含む概念である。これは、ＪＸ　ＡＮＣＩ社製のワリフ（登録商標）として市販されている。
　前記不織布を構成する繊維としては、例えば、ポリオレフィン繊維（例えば、ポリエチレン繊維など）などが挙げられる。 The non-woven fabric is made of fibers.
The non-woven fabric is prepared by preparing two sheets in which the longitudinal directions of the fibers are aligned by stretching and fiberizing the film made of polyolefin, and laminating the two sheets so that the longitudinal directions of the fibers are orthogonal to each other. It is a concept that also includes. It is commercially available as a Warif® manufactured by JX ANCI.
Examples of the fibers constituting the non-woven fabric include polyolefin fibers (for example, polyethylene fibers) and the like.
　前記フィルムは、ポリエチレンテレフタラート樹脂、及び、ポリエチレン樹脂からなる群より選ばれた１種以上の樹脂で形成されている。 The film is formed of one or more resins selected from the group consisting of polyethylene terephthalate resin and polyethylene resin.
　前記金属層３２を構成する金属としては、例えば、アルミニウム、ステンレス鋼、チタンなどが挙げられる。前記ステンレス鋼としては、ＳＵＳ等が挙げられる。 Examples of the metal constituting the metal layer 32 include aluminum, stainless steel, and titanium. Examples of the stainless steel include SUS and the like.
　前記接着剤層３３の粘着剤を構成する材料としては、例えば、ポリエチレンなどが挙げられる。該ポリエチレンとしては、リニアポリエチレン（直鎖状低密度ポリエチレン。Ｌ－ＬＤＰＥ）等が挙げられる。 Examples of the material constituting the adhesive of the adhesive layer 33 include polyethylene and the like. Examples of the polyethylene include linear polyethylene (linear low density polyethylene, L-LDPE) and the like.
　前記粘着剤層２の粘着剤は、固形粘着剤であることが好ましい。
　なお、固形粘着剤とは、実質的に溶剤を含まない粘着剤、いわゆる、非溶剤系粘着剤である。
　前記固形粘着剤のフロー粘度は、１０００～５００００Ｐａ・ｓが好ましい。
　なお、ＪＩＳ　Ｋ　７２１０－１：２０１４（試験条件：荷重４０ｋｇ（荷重圧力４２ｋｇｆ／ｃｍ２）、測定温度６０℃）に準拠して測定した見掛けの粘度を、フロー粘度とすることができる。フロー粘度は、例えば、流動特性評価装置（「フローテスターＣＦＴ－５００Ｄ」、島津製作所社製）を用いて、測定することができる。 The pressure-sensitive adhesive of the pressure-sensitive adhesive layer 2 is preferably a solid pressure-sensitive adhesive.
The solid pressure-sensitive adhesive is a pressure-sensitive adhesive that does not substantially contain a solvent, a so-called non-solvent-based pressure-sensitive adhesive.
The flow viscosity of the solid pressure-sensitive adhesive is preferably 1000 to 50,000 Pa · s.
The apparent viscosity measured in accordance with JIS K 7210-1: 2014 (test conditions: load 40 kg (load pressure 42 kgf / cm 2 ), measurement temperature 60 ° C.) can be used as the flow viscosity. The flow viscosity can be measured using, for example, a flow characteristic evaluation device (“Flow Tester CFT-500D”, manufactured by Shimadzu Corporation).
　前記粘着剤は、ゴム成分を含むことが好ましい。
　また、前記粘着剤は、軟化剤、粘着付与剤、充填剤、架橋剤、老化防止剤、可塑剤などを含んでいてもよい。 The pressure-sensitive adhesive preferably contains a rubber component.
Further, the pressure-sensitive adhesive may contain a softening agent, a tackifier, a filler, a cross-linking agent, an antiaging agent, a plasticizer and the like.
　前記ゴム成分としては、例えば、天然ゴム、ブチルゴム、ポリイソブチレン、ブタジエンゴム、クロロプレンゴム、スチレン・ブタジエンゴム、アクリロニトリル・ブタジエンゴム、スチレン・エチレン・ブタジエン・スチレンゴム、スチレン・イソプレン・スチレンゴム、イソプレンゴム、スチレン・ブタジエン・スチレンゴム、エチレン・プロピレンゴム、アクリルゴム、シリコーンゴム、ウレタンゴム、ビニルアルキルエーテルゴム、ポリビニルアルコールゴム、ポリビニルピロリドンゴム、ポリアクリルアミドゴム、セルロースゴム等が挙げられる。ゴム成分としては、１種のみであってもよく、２種以上であってもよい。
　前記ゴム成分としては、ブチルゴム、イソプレンゴム、天然ゴムが好ましい。 Examples of the rubber component include natural rubber, butyl rubber, polyisobutylene, butadiene rubber, chloroprene rubber, styrene / butadiene rubber, acrylonitrile / butadiene rubber, styrene / ethylene / butadiene / styrene rubber, styrene / isoprene / styrene rubber, and isoprene rubber. , Styrene-butadiene-styrene rubber, ethylene / propylene rubber, acrylic rubber, silicone rubber, urethane rubber, vinyl alkyl ether rubber, polyvinyl alcohol rubber, polyvinylpyrrolidone rubber, polyacrylamide rubber, cellulose rubber and the like. As the rubber component, only one kind may be used, or two or more kinds may be used.
Butyl rubber, isoprene rubber, and natural rubber are preferable as the rubber component.
　なお、ブチルゴムは、イソブチレンとイソプレンとの共重合体（イソブチレン・イソプレンゴム）も含む概念である。
　ブチルゴムの種類としては、例えば、再生ブチルゴム、合成ブチルゴムなどが挙げられる。ブチルゴムとしては、１種のみであってもよく、２種以上であってもよい。
　加工性等の点を勘案すると、ブチルゴムとしては、好ましくは、再生ブチルゴムである。 Butyl rubber is a concept that also includes a copolymer of isobutylene and isoprene (isobutylene / isoprene rubber).
Examples of the type of butyl rubber include regenerated butyl rubber and synthetic butyl rubber. As the butyl rubber, only one type may be used, or two or more types may be used.
In consideration of workability and the like, the butyl rubber is preferably recycled butyl rubber.
　前記軟化剤は、良好な粘着性を粘着剤層に付与し得る。
　前記軟化剤としては、例えば、パラフィン類、ワックス類、ナフテン類、アロマ類、アスファルト類、乾性油類（例えば、アマニ油など）、動植物油類、石油系オイル類（例えば、プロセスオイルなど）、ポリブテン、低分子量ポリエチレングリコール、フタル酸エステル類、リン酸エステル類、ステアリン酸またはそのエステル類、アルキルスルホン酸エステル類などが挙げられる。軟化剤としては、１種のみであってもよく、２種以上であってもよい。 The softener may impart good tackiness to the pressure-sensitive adhesive layer.
Examples of the softener include paraffins, waxes, naphthenes, aromas, asphalts, drying oils (eg, flaxseed oil), animal and vegetable oils, petroleum oils (eg, process oils), and the like. Examples thereof include polybutene, low molecular weight polyethylene glycol, phthalates, phosphate esters, stearic acid or its esters, alkyl sulfonic acid esters and the like. As the softener, only one kind may be used, or two or more kinds may be used.
　前記粘着付与剤は、粘着剤層の粘着力を向上させるとともに、高温においてゴム成分を軟化し易くするために任意に配合され得る。
　前記粘着付与剤としては、例えば、石油系樹脂、フェノール系樹脂、ロジン系樹脂、テルペン系樹脂などが挙げられる。粘着付与剤としては、１種のみであってもよく、２種以上であってもよい。 The tackifier may be optionally blended in order to improve the adhesive strength of the pressure-sensitive adhesive layer and to facilitate the softening of the rubber component at high temperatures.
Examples of the tackifier include petroleum-based resins, phenol-based resins, rosin-based resins, and terpene-based resins. As the tackifier, only one kind may be used, or two or more kinds may be used.
　前記充填剤は、粘着剤層を補強するために任意に配合される。
　前記充填剤としては、例えば、炭酸カルシウム（例えば、重質炭酸カルシウム、軽質炭酸カルシウムなど）、タルク、酸化チタン、カーボンブラック、シリカ、酸化マグネシウムなどが挙げられる。充填剤としては、１種のみであってもよく、２種以上であってもよい。 The filler is optionally formulated to reinforce the pressure-sensitive adhesive layer.
Examples of the filler include calcium carbonate (for example, heavy calcium carbonate, light calcium carbonate, etc.), talc, titanium oxide, carbon black, silica, magnesium oxide, and the like. As the filler, only one type may be used, or two or more types may be used.
　粘着剤におけるゴム成分の含有割合は、好ましくは３質量％～７０質量％であり、より好ましくは５質量％～６０質量％であり、さらに好ましくは７質量％～５０質量％であり、特に好ましくは１０質量％～４０質量％である。粘着剤におけるゴム成分の含有割合が上記範囲内にあれば、本実施形態の防水用シートは、凹凸追従性、耐久性により優れ得る。 The content ratio of the rubber component in the pressure-sensitive adhesive is preferably 3% by mass to 70% by mass, more preferably 5% by mass to 60% by mass, still more preferably 7% by mass to 50% by mass, and particularly preferably. Is 10% by mass to 40% by mass. When the content ratio of the rubber component in the pressure-sensitive adhesive is within the above range, the waterproof sheet of the present embodiment can be more excellent in unevenness-following property and durability.
　ゴム成分におけるブチルゴムの含有割合は、好ましくは５０質量％～１００質量％であり、より好ましくは６０質量％～１００質量％であり、さらに好ましくは７０質量％～１００質量％であり、特に好ましくは８０質量％～１００質量％である。
　ゴム成分におけるブチルゴムの含有割合が上記範囲内にあれば、本実施形態に係る防水用シートは、凹凸追従性、耐久性により優れ得る。 The content ratio of butyl rubber in the rubber component is preferably 50% by mass to 100% by mass, more preferably 60% by mass to 100% by mass, still more preferably 70% by mass to 100% by mass, and particularly preferably. It is 80% by mass to 100% by mass.
When the content ratio of butyl rubber in the rubber component is within the above range, the waterproof sheet according to the present embodiment can be excellent in unevenness followability and durability.
　前記軟化剤の含有割合は、ゴム成分１００質量部に対して、好ましくは３０質量部～３００質量部であり、より好ましくは５０質量部～２００質量部であり、さらに好ましくは８０質量部～１５０質量部であり、特に好ましくは１０５質量部～１２５質量部以下である。 The content ratio of the softening agent is preferably 30 parts by mass to 300 parts by mass, more preferably 50 parts by mass to 200 parts by mass, and further preferably 80 parts by mass to 150 parts by mass with respect to 100 parts by mass of the rubber component. It is by mass, and particularly preferably 105 parts by mass to 125 parts by mass or less.
　前記粘着付与剤の含有割合は、ゴム成分１００質量部に対して、好ましくは５質量部～５００質量部であり、より好ましくは８質量部～３００質量部であり、さらに好ましくは１０質量部～２００質量部であり、特に好ましくは３０質量部～７０質量部である。 The content ratio of the tackifier is preferably 5 parts by mass to 500 parts by mass, more preferably 8 parts by mass to 300 parts by mass, and further preferably 10 parts by mass to 100 parts by mass with respect to 100 parts by mass of the rubber component. It is 200 parts by mass, and particularly preferably 30 parts by mass to 70 parts by mass.
　前記充填剤の含有割合は、ゴム成分１００質量部に対して、好ましくは２０質量部～６００質量部であり、より好ましくは３０質量部～５００質量部であり、さらに好ましくは５０質量部～４００質量部であり、特に好ましくは１００質量部～３００質量部である。 The content ratio of the filler is preferably 20 parts by mass to 600 parts by mass, more preferably 30 parts by mass to 500 parts by mass, and further preferably 50 parts by mass to 400 parts by mass with respect to 100 parts by mass of the rubber component. It is a part by mass, and particularly preferably 100 parts by mass to 300 parts by mass.
　なお、図３に示すように、本実施形態に係る防水用シート１では、前記シート本体３は、樹脂で形成され、且つ、前記金属層３２のうちの少なくとも１層よりも背面側に配された背面側樹脂層３４を有してもよい。
　なお、図３では、前記背面側樹脂層３４は、前記金属層３２の全層よりも背面側に配されている。より具体的には、図３に示すように、本実施形態の前記防水用シート１は、前記背面１２側から前記接着面１１側にかけて、背面側樹脂層３４、第１金属層３２ａ、第１接着剤層３３ａ、基材層３１、第２接着剤層３３ｂ、第２金属層３２ｂ、及び、粘着剤層２がこの順に積層された積層体となっている。
　前記背面側樹脂層３４は、コート剤を用いて形成することができる。
　前記背面側樹脂層３４は、アクリル樹脂、エポキシ樹脂、ポリエチレンテレフタラート樹脂、ポリエチレン樹脂、ポリエチレンナフタレート樹脂、ポリプロピレン樹脂、ウレタン樹脂、フッ素樹脂、及び、シリコーン樹脂からなる群より選ばれた１種以上の樹脂を含む。
　本実施形態に係る防水用シート１は、前記シート本体３が前記背面側樹脂層３４を有することにより、耐候性及び耐薬品性が高まるという利点を有する。
　なお、図３では、前記シート本体３は、前記背面側樹脂層３４を１層有しているが、本実施形態では、前記シート本体３は、前記背面側樹脂層３４を２層以上有してもよい。 As shown in FIG. 3, in the waterproof sheet 1 according to the present embodiment, the sheet body 3 is made of resin and is arranged on the back side of at least one of the metal layers 32. The back side resin layer 34 may be provided.
In FIG. 3, the back surface side resin layer 34 is arranged on the back surface side of all the layers of the metal layer 32. More specifically, as shown in FIG. 3, the waterproof sheet 1 of the present embodiment has a back surface side resin layer 34, a first metal layer 32a, and a first from the back surface 12 side to the adhesive surface 11 side. The adhesive layer 33a, the base material layer 31, the second adhesive layer 33b, the second metal layer 32b, and the adhesive layer 2 are laminated in this order.
The back surface side resin layer 34 can be formed by using a coating agent.
The back side resin layer 34 is one or more selected from the group consisting of acrylic resin, epoxy resin, polyethylene terephthalate resin, polyethylene resin, polyethylene naphthalate resin, polypropylene resin, urethane resin, fluororesin, and silicone resin. Contains resin.
The waterproof sheet 1 according to the present embodiment has an advantage that the weather resistance and the chemical resistance are enhanced by the sheet main body 3 having the back surface side resin layer 34.
In addition, in FIG. 3, the sheet main body 3 has one layer of the back side resin layer 34, but in the present embodiment, the sheet main body 3 has two or more layers of the back side resin layer 34. You may.
　また、図４に示すように、本実施形態に係る防水用シート１では、前記シート本体３は、樹脂で形成され、且つ、前記金属層３２のうちの少なくとも１層よりも接着面側に配された接着面側樹脂層３５を有してもよい。
　なお、図４では、前記接着面側樹脂層３５は、前記金属層３２の全層よりも接着面側に配されている。
　また、前記接着面側樹脂層３５は、フィルムで形成されている。
　さらに、前記接着面側樹脂層３５は、前記第２金属層３２ｂと前記接着剤層３３たる第３接着剤層３３ｃで接着されている。
　より具体的には、図４に示すように、本実施形態の前記防水用シート１は、前記背面１２側から前記接着面１１側にかけて、第１金属層３２ａ、第１接着剤層３３ａ、基材層３１、第２接着剤層３３ｂ、第２金属層３２ｂ、第３接着剤層３３ｃ、接着面側樹脂層３５、及び、粘着剤層２がこの順に積層された積層体となっている。
　前記接着面側樹脂層３５は、ポリエチレンテレフタラート樹脂、及び、ポリエチレン樹脂からなる群より選ばれた１種以上の樹脂を含む。
　本実施形態に係る防水用シート１は、前記シート本体３が前記接着面側樹脂層３５を有することにより、耐炎性が高まるという利点を有する。 Further, as shown in FIG. 4, in the waterproof sheet 1 according to the present embodiment, the sheet body 3 is made of resin and is arranged on the adhesive surface side of at least one of the metal layers 32. It may have the bonded surface side resin layer 35.
In FIG. 4, the adhesive surface side resin layer 35 is arranged on the adhesive surface side with respect to all the layers of the metal layer 32.
Further, the adhesive surface side resin layer 35 is formed of a film.
Further, the adhesive surface side resin layer 35 is adhered to the second metal layer 32b by the third adhesive layer 33c which is the adhesive layer 33.
More specifically, as shown in FIG. 4, the waterproof sheet 1 of the present embodiment has a first metal layer 32a, a first adhesive layer 33a, and a base from the back surface 12 side to the adhesive surface 11 side. The material layer 31, the second adhesive layer 33b, the second metal layer 32b, the third adhesive layer 33c, the adhesive surface side resin layer 35, and the adhesive layer 2 are laminated in this order.
The adhesive surface side resin layer 35 contains a polyethylene terephthalate resin and one or more resins selected from the group consisting of polyethylene resins.
The waterproof sheet 1 according to the present embodiment has an advantage that the flame resistance is enhanced by the sheet main body 3 having the adhesive surface side resin layer 35.
　本実施形態に係る防水用シート１の厚みは、好ましくは２００～１０００μｍ、より好ましくは３００～７００μｍである。 The thickness of the waterproof sheet 1 according to the present embodiment is preferably 200 to 1000 μm, more preferably 300 to 700 μm.
　本実施形態に係る防水用シート１は、前記シート本体３の厚みと前記粘着剤層２の厚みとの比率（前記シート本体３の厚み：前記粘着剤層２の厚み）が、好ましくは１：２０～２：１、より好ましくは１：１０～５：３である。
　言い換えれば、本実施形態に係る防水用シート１では、前記シート本体３の厚みに対する前記粘着剤層２の厚みの比率（前記粘着剤層２の厚み／前記シート本体３の厚み）が、好ましくは０．５～２０、より好ましくは０．６～１０である。
　本実施形態に係る防水用シート１は、前記シート本体３の厚みに対する前記粘着剤層２の厚みの比率が０．５以上であることにより、防水用シートの引張強さが高くなりやすくなる。そして、防水用シート１は、破れにくいものとなり、その結果、防水用シート１による防水の長期の信頼性が向上するという利点を有する。
　また、本実施形態に係る防水用シート１は、前記シート本体３の厚みに対する前記粘着剤層２の厚みの比率が２０以下であることにより、被着体に貼り付けた状態で防水用シート１にシワが入っても、該シワが伸ばしやすいものとなり、その結果、防水用シート１による防水の長期の信頼性が向上するという利点を有する。 In the waterproof sheet 1 according to the present embodiment, the ratio of the thickness of the sheet body 3 to the thickness of the pressure-sensitive adhesive layer 2 (thickness of the sheet body 3: thickness of the pressure-sensitive adhesive layer 2) is preferably 1: 1. It is 20 to 2: 1, more preferably 1:10 to 5: 3.
In other words, in the waterproof sheet 1 according to the present embodiment, the ratio of the thickness of the pressure-sensitive adhesive layer 2 to the thickness of the sheet body 3 (thickness of the pressure-sensitive adhesive layer 2 / thickness of the sheet body 3) is preferable. It is 0.5 to 20, more preferably 0.6 to 10.
In the waterproof sheet 1 according to the present embodiment, the ratio of the thickness of the pressure-sensitive adhesive layer 2 to the thickness of the sheet body 3 is 0.5 or more, so that the tensile strength of the waterproof sheet tends to be high. The waterproof sheet 1 is less likely to be torn, and as a result, has the advantage that the long-term reliability of waterproofing by the waterproof sheet 1 is improved.
Further, in the waterproof sheet 1 according to the present embodiment, the ratio of the thickness of the adhesive layer 2 to the thickness of the sheet body 3 is 20 or less, so that the waterproof sheet 1 is attached to the adherend. Even if wrinkles are formed on the surface, the wrinkles are easily smoothed out, and as a result, there is an advantage that the long-term reliability of waterproofing by the waterproof sheet 1 is improved.
　また、本実施形態に係る防水用シート１では、前記金属層３２の合計の厚み（図１の態様では、第１金属層３２ａの厚みと第２金属層３２ｂの厚みとの合計）と前記シート本体３の厚みとの比率（前記金属層３２の合計の厚み：前記シート本体３の厚み）が、好ましくは１：３０～２：３であり、より好ましくは１：２０～１：２である。
　言い換えれば、本実施形態に係る防水用シート１では、前記シート本体３の厚みに対する前記金属層３２の合計の厚みの比率（前記金属層３２の合計の厚み／前記シート本体３の厚み）が、好ましくは０．０３～０．７、より好ましくは０．０５～０．５である。
　本実施形態に係る防水用シート１は、前記シート本体３の厚みに対する前記金属層３２の合計の厚みの比率が０．０３以上であることにより、被着体に張り付けた状態で防水用シート１にシワが入っても、該シワが伸ばしやすいものとなり、その結果、防水用シート１による防水の長期の信頼性が向上するという利点を有する。
　また、本実施形態に係る防水用シート１は、前記シート本体３の厚みに対する前記金属層３２の合計の厚みの比率０．７以下であることにより、被着体に貼り付けた状態で防水用シート１にシワが入っても、該シワが伸ばしやすいものとなり、その結果、防水用シート１による防水の長期の信頼性が向上するという利点を有する。 Further, in the waterproof sheet 1 according to the present embodiment, the total thickness of the metal layer 32 (in the embodiment of FIG. 1, the total of the thickness of the first metal layer 32a and the thickness of the second metal layer 32b) and the sheet. The ratio to the thickness of the main body 3 (total thickness of the metal layer 32: thickness of the sheet main body 3) is preferably 1:30 to 2: 3, and more preferably 1:20 to 1: 2. ..
In other words, in the waterproof sheet 1 according to the present embodiment, the ratio of the total thickness of the metal layer 32 to the thickness of the sheet body 3 (total thickness of the metal layer 32 / thickness of the sheet body 3) is It is preferably 0.03 to 0.7, more preferably 0.05 to 0.5.
The waterproof sheet 1 according to the present embodiment has a waterproof sheet 1 in a state of being attached to an adherend because the ratio of the total thickness of the metal layer 32 to the thickness of the sheet body 3 is 0.03 or more. Even if wrinkles are formed on the surface, the wrinkles are easily smoothed out, and as a result, there is an advantage that the long-term reliability of waterproofing by the waterproof sheet 1 is improved.
Further, the waterproof sheet 1 according to the present embodiment is for waterproofing in a state of being attached to the adherend because the ratio of the total thickness of the metal layer 32 to the thickness of the sheet body 3 is 0.7 or less. Even if the sheet 1 is wrinkled, the wrinkles are easily smoothed out, and as a result, there is an advantage that the long-term reliability of waterproofing by the waterproof sheet 1 is improved.
　本実施形態に係る防水用シート１は、部材同士の隙間（目地）を塞ぐシートとして好適に用いられる。
　また、工場等の配管を覆うジャケットカバーどうしの継ぎ目部分を塞ぐ場合のように、耐炎性が優れた防水用シートが求められる場合には、金属層３２を２層以上有する防水用シートが特に好適に用いられる。 The waterproof sheet 1 according to the present embodiment is suitably used as a sheet for closing gaps (joints) between members.
Further, when a waterproof sheet having excellent flame resistance is required, such as when closing a joint portion between jacket covers covering pipes in a factory or the like, a waterproof sheet having two or more metal layers 32 is particularly suitable. Used for.
　本実施形態に係る防水用シートは、上記のように構成されているので、以下の利点を有するものである。 Since the waterproof sheet according to this embodiment is configured as described above, it has the following advantages.
（１）
　被着体に接着される接着面と、該接着面とは反対の面である背面とを有する防水用シートであって、
　曲げかたさが、５ｇｆ・ｃｍ２／ｃｍ以下であり、
　前記接着面を有し、且つ、粘着剤で形成された粘着剤層と、前記背面側から前記粘着剤層に接し、１又は２以上の層を有するシート本体とを備え、
　前記シート本体には、金属で形成された金属層が１又は２以上含まれている、防水用シート。 (1)
A waterproof sheet having an adhesive surface to be adhered to an adherend and a back surface opposite to the adhesive surface.
Bending is 5 gf · cm 2 / cm or less,
It comprises a pressure-sensitive adhesive layer having the adhesive surface and formed of an adhesive, and a sheet body which is in contact with the pressure-sensitive adhesive layer from the back surface side and has one or more layers.
The sheet body is a waterproof sheet containing one or more metal layers made of metal.
　斯かる防水用シートは、曲げかたさが５ｇｆ・ｃｍ２／ｃｍ以下であることにより、被着体の形状に沿って防水用シートを貼り付けやすいものとなり、その結果、施工性に優れたものとなる。 Since the bending of such a waterproof sheet is 5 gf · cm 2 / cm or less, it becomes easy to attach the waterproof sheet along the shape of the adherend, and as a result, it is excellent in workability. Become.
（２）
　曲げ回復が、０．５ｇｆ・ｃｍ／ｃｍ以上である、上記（１）に記載の防水用シート。 (2)
The waterproof sheet according to (1) above, wherein the bending recovery is 0.5 gf · cm / cm or more.
　斯かる防水用シートは、曲げ回復が０．５ｇｆ・ｃｍ／ｃｍ以上であることにより、被着体の形状に沿って貼り付けた防水用シートに、被着体から剥がそうとする力が掛かっても、被着体の形状に沿った状態に戻ろうとする力が生じることにより、防水用シートが剥がれにくくなり、その結果、防水用シート１による防水の長期の信頼性が向上するという利点を有する。 Since the bending recovery of such a waterproof sheet is 0.5 gf · cm / cm or more, a force is applied to the waterproof sheet attached along the shape of the adherend to peel it off from the adherend. However, the force that tries to return to the state that follows the shape of the adherend is generated, which makes it difficult for the waterproof sheet to come off, and as a result, has the advantage of improving the long-term reliability of waterproofing by the waterproof sheet 1. Have.
（３）
　前記シート本体は、織物、不織布、又は、フィルムで形成された基材層を含む、上記（１）又は（２）に記載の防水用シート。 (3)
The waterproof sheet according to (1) or (2) above, wherein the sheet body includes a base material layer made of a woven fabric, a non-woven fabric, or a film.
（４）
　前記織物は、ガラス繊維、ポリエチレンテレフタラート繊維、及び、ポリエチレン繊維からなる群より選ばれた１種以上の繊維で形成され、
　前記不織布は、ポリエチレン繊維で形成され、
　前記フィルムは、ポリエチレンテレフタラート樹脂、及び、ポリエチレン樹脂からなる群より選ばれた１種以上の樹脂で形成された、上記（３）に記載の防水用シート。 (4)
The woven fabric is formed of one or more fibers selected from the group consisting of glass fibers, polyethylene terephthalate fibers, and polyethylene fibers.
The non-woven fabric is made of polyethylene fiber and is made of polyethylene fiber.
The waterproof sheet according to (3) above, wherein the film is made of one or more resins selected from the group consisting of polyethylene terephthalate resin and polyethylene resin.
（５）
　前記金属層のうちの少なくとも１層は、前記基材層よりも前記背面側に配されている、上記（３）又は（４）に記載の防水用シート。 (5)
The waterproof sheet according to (3) or (4) above, wherein at least one of the metal layers is arranged on the back surface side of the base material layer.
（６）
　前記金属層のうちの少なくとも１層は、前記基材層よりも前記接着面側に配されている、上記（３）～（５）の何れかに記載の防水用シート。 (6)
The waterproof sheet according to any one of (3) to (5) above, wherein at least one of the metal layers is arranged on the adhesive surface side of the base material layer.
（７）
　前記シート本体は、樹脂で形成され、且つ、前記金属層のうちの少なくとも１層よりも前記背面側に配された背面側樹脂層を有し、
　前記背面側樹脂層は、アクリル樹脂、エポキシ樹脂、ポリエチレンテレフタラート樹脂、ポリエチレン樹脂、ポリエチレンナフタレート樹脂、ポリプロピレン樹脂、ウレタン樹脂、フッ素樹脂、及び、シリコーン樹脂からなる群より選ばれた１種以上の樹脂を含む、上記（１）～（６）の何れかに記載の防水用シート。 (7)
The sheet body has a back surface resin layer formed of resin and arranged on the back surface side of at least one of the metal layers.
The back side resin layer is one or more selected from the group consisting of acrylic resin, epoxy resin, polyethylene terephthalate resin, polyethylene resin, polyethylene naphthalate resin, polypropylene resin, urethane resin, fluororesin, and silicone resin. The waterproof sheet according to any one of (1) to (6) above, which contains a resin.
　斯かる防水用シートは、前記シート本体が前記背面樹脂層を有することにより、耐候性及び耐薬品性が高まるという利点を有する。 Such a waterproof sheet has an advantage that weather resistance and chemical resistance are enhanced because the sheet body has the back surface resin layer.
（８）
　前記シート本体は、樹脂で形成され、且つ、前記金属層のうちの少なくとも１層よりも前記接着面側に配された接着面側樹脂層を有し、
　前記接着面側樹脂層は、ポリエチレンテレフタラート樹脂、及び、ポリエチレン樹脂からなる群より選ばれた１種以上の樹脂を含む、上記（１）～（７）の何れかに記載の防水用シート。 (8)
The sheet body has a resin layer on the adhesive surface side, which is formed of resin and is arranged on the adhesive surface side of at least one of the metal layers.
The waterproof sheet according to any one of (1) to (7) above, wherein the adhesive surface side resin layer contains a polyethylene terephthalate resin and one or more resins selected from the group consisting of polyethylene resin.
　斯かる防水用シートは、前記シート本体が前記接着面側樹脂層を有することにより、耐炎性が高まるという利点を有する。 Such a waterproof sheet has an advantage that the flame resistance is enhanced by the sheet body having the adhesive surface side resin layer.
（９）
　前記金属層のうち少なくとも１層は、アルミニウム、ステンレス鋼、及び、チタンからなる群より選ばれた１種以上の金属を含む、上記（１）～（８）の何れかに記載の防水用シート。 (9)
The waterproof sheet according to any one of (1) to (8) above, wherein at least one of the metal layers contains one or more metals selected from the group consisting of aluminum, stainless steel, and titanium. ..
（１０）
　前記粘着剤は、固形粘着剤である、上記（１）～（９）の何れかに記載の防水用シート。 (10)
The waterproof sheet according to any one of (1) to (9) above, wherein the pressure-sensitive adhesive is a solid pressure-sensitive adhesive.
　（１１）
　前記粘着剤は、ブチルゴム、イソプレンゴム、及び、天然ゴムからなる群より選ばれた１種以上のゴムを含む、上記（１）～（１０）の何れかに記載の防水用シート。 (11)
The waterproof sheet according to any one of (1) to (10) above, wherein the pressure-sensitive adhesive contains at least one rubber selected from the group consisting of butyl rubber, isoprene rubber, and natural rubber.
（１２）
　前記シート本体の厚みと前記粘着剤層の厚みとの比率（前記シート本体の厚み：前記粘着剤層の厚み）が、１：２０～２：１である、上記（１）～（１１）の何れかに記載の防水用シート。 (12)
The above (1) to (11), wherein the ratio of the thickness of the sheet body to the thickness of the pressure-sensitive adhesive layer (thickness of the sheet body: thickness of the pressure-sensitive adhesive layer) is 1:20 to 2: 1. The waterproof sheet described in any of them.
　斯かる防水用シートは、前記シート本体の厚みと前記粘着剤層の厚みとの比率（前記シート本体の厚み：前記粘着剤層の厚み）が１：２０～２：１であることにより、前記防水用シートの引張強さが高くなりやすくなる。そして、前記防水用シートは、破れにくいものとなり、その結果、前記防水用シートによる防水の長期の信頼性が向上するという利点を有する。
　また、被着体に貼り付けた状態で前記防水用シートにシワが入っても、該シワが伸ばしやすいものとなり、その結果、前記防水用シートによる防水の長期の信頼性が向上するという利点を有する。 Such a waterproof sheet has a ratio of the thickness of the sheet body to the thickness of the pressure-sensitive adhesive layer (thickness of the sheet body: thickness of the pressure-sensitive adhesive layer) of 1: 20 to 2: 1. The tensile strength of the waterproof sheet tends to increase. The waterproof sheet is less likely to be torn, and as a result, has the advantage of improving the long-term reliability of waterproofing by the waterproof sheet.
Further, even if wrinkles are formed on the waterproof sheet while attached to the adherend, the wrinkles are easily smoothed out, and as a result, the long-term reliability of waterproofing by the waterproof sheet is improved. Have.
（１３）
　前記金属層の合計の厚みと、前記シート本体の厚みとの比率（前記金属層の合計の厚み：前記シート本体の厚み）が、１：３０～２：３である、上記（１）～（１２）の何れかに記載の防水用シート。 (13)
The ratio of the total thickness of the metal layer to the thickness of the sheet body (total thickness of the metal layer: thickness of the sheet body) is 1:30 to 2: 3, the above (1) to (1). The waterproof sheet according to any one of 12).
　斯かる防水用シートは、前記金属層の合計の厚みと、前記シート本体の厚みとの比率（前記金属層の合計の厚み：前記シート本体の厚み）が、１：３０～２：３であることにより、被着体に貼り付けた状態で前記防水用シートにシワが入っても、該シワが伸ばしやすいものとなり、その結果、前記防水用シートによる長期の信頼性が向上するという利点を有する。
　また、被着体に貼り付けた状態で前記防水用シートにシワが入っても、該シワが伸ばしやすいものとなり、その結果、前記防水用シートによる防水の長期の信頼性が向上するという利点を有する。 In such a waterproof sheet, the ratio of the total thickness of the metal layer to the thickness of the sheet body (total thickness of the metal layer: thickness of the sheet body) is 1:30 to 2: 3. As a result, even if wrinkles are formed on the waterproof sheet while attached to the adherend, the wrinkles are easily smoothed out, and as a result, there is an advantage that the long-term reliability of the waterproof sheet is improved. ..
Further, even if wrinkles are formed on the waterproof sheet while attached to the adherend, the wrinkles are easily smoothed out, and as a result, the long-term reliability of waterproofing by the waterproof sheet is improved. Have.
　なお、本発明に係る防水用シートは、上記実施形態に限定されるものではない。また、本発明に係る防水用シートは、上記した作用効果によって限定されるものでもない。さらに、本発明に係る防水用シートは、本発明の要旨を逸脱しない範囲で種々の変更が可能である。 The waterproof sheet according to the present invention is not limited to the above embodiment. Further, the waterproof sheet according to the present invention is not limited by the above-mentioned action and effect. Further, the waterproof sheet according to the present invention can be variously modified without departing from the gist of the present invention.
　次に、実施例および比較例を挙げて本発明についてさらに具体的に説明する。
　以下の実施例は、本発明をさらに詳しく説明するためのものであり、本発明の範囲を限定するものではない。 Next, the present invention will be described in more detail with reference to Examples and Comparative Examples.
The following examples are for the purpose of explaining the present invention in more detail, and do not limit the scope of the present invention.
（実施例１）
　シート本体の材料として以下の材料を用意した。
・アルミニウムシート：１Ｎ３０、厚み２０μｍ
・接着剤：リニアポリエチレン（直鎖状低密度ポリエチレン。Ｌ－ＬＤＰＥ）を含む接着剤
・基材としての織物（繊維：ガラス繊維、たて糸密度：１６本／２５ｍｍ、よこ糸密度：１５本／２５ｍｍ、厚み：１１０μｍ）
　次に、接着剤を介してアルミニウムシートと織物とを接着させて、金属層（アルミニウム層）、接着剤層（厚み：２５μｍ）、及び、基材層がこの順に積層されたシート本体を作製した。 (Example 1)
The following materials were prepared as the materials for the seat body.
-Aluminum sheet: 1N30, thickness 20 μm
-Adhesive: Adhesive containing linear polyethylene (linear low-density polyethylene. L-LDPE) -Textile as a base material (fiber: glass fiber, warp yarn density: 16/25 mm, weft density: 15/25 mm, Thickness: 110 μm)
Next, the aluminum sheet and the woven fabric were adhered to each other via an adhesive to prepare a sheet body in which a metal layer (aluminum layer), an adhesive layer (thickness: 25 μm), and a base material layer were laminated in this order. ..
　また、粘着剤の材料として以下の材料を用意した。
・Ｓブチル再生ゴム：ムーニー粘度ＭＬ１＋４（１００℃）４４±６、縣護謨社製
・重質炭酸カルシウム：充填剤、篩残分（３５０メッシュ）＝０．５％以下（ＪＩＳ－Ｋ－５１０１に準拠）、丸尾カルシウム社製
・Ｔ－ＲＥＺ　ＲＢ１００：粘着付与剤、石油系樹脂、軟化点１００℃、東燃化学社製
・ポリブテンＨＶ－３００：ポリブテン、軟化剤、流動点０℃、動粘度（４０℃）２６０００ｍｍ２／ｓ、ＪＸ日鉱日石エネルギー社製
・ダイアナプロセスオイルＰＷ－９０：石油系炭化水素、流動点－１０℃以下、出光興産社製
　次に、下記表１の配合割合で粘着剤の材料を混合して粘着剤を得た。 In addition, the following materials were prepared as the materials for the pressure-sensitive adhesive.
-S-butyl recycled rubber: Mooney viscosity ML1 + 4 (100 ° C) 44 ± 6, manufactured by Akira Gosho Co., Ltd.-Heavy calcium carbonate: Filler, sieve residue (350 mesh) = 0.5% or less (to JIS-K-5101) (Compliant), T-REZ RB100 manufactured by Maruo Calcium: Adhesive, petroleum resin, softening point 100 ° C, Polybutene HV-300 manufactured by Tonen Kagaku Co., Ltd .: Polybutene, softening agent, pour point 0 ° C, kinematic viscosity (40) ℃) 26000mm 2 / s, manufactured by JX Nippon Oil Energy Co., Ltd. Diana Process Oil PW-90: Petroleum hydrocarbon, pour point -10 ℃ or less, manufactured by Idemitsu Kosan Co., Ltd. Materials were mixed to obtain a pressure-sensitive adhesive.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　そして、カレンダーロールにて、前記シート本体の基材層に前記粘着剤を８０℃で塗布して粘着剤層を形成し、テープ状の防水用シートを得た。 Then, with a calendar roll, the adhesive was applied to the base material layer of the sheet body at 80 ° C. to form an adhesive layer, and a tape-shaped waterproof sheet was obtained.
（実施例２）
　アクリル樹脂を含む第１コート剤と、ウレタン樹脂を含む第２コート剤とを用意した。
　そして、実施例１の防水用シートの金属層に第２コート剤を塗布することにより第２背面側樹脂層を形成し、該第２背面側樹脂層に第１コート剤を塗布することにより第１背面側樹脂層を形成した。
　これにより、第１背面側樹脂層（厚み：２．５μｍ）、第２背面側樹脂層（厚み：２．５μｍ）、金属層（アルミニウム層）、接着剤層（厚み：２５μｍ）、基材層、及び、粘着剤層がこの順に積層されたテープ状の防水用シートを得た。 (Example 2)
A first coating agent containing an acrylic resin and a second coating agent containing a urethane resin were prepared.
Then, the second back surface side resin layer is formed by applying the second coating agent to the metal layer of the waterproof sheet of Example 1, and the first coating agent is applied to the second back surface side resin layer. 1 The back side resin layer was formed.
As a result, the first back surface side resin layer (thickness: 2.5 μm), the second back surface side resin layer (thickness: 2.5 μm), the metal layer (aluminum layer), the adhesive layer (thickness: 25 μm), and the base material layer. , And a tape-shaped waterproof sheet in which the adhesive layers were laminated in this order was obtained.
（実施例３）
　基材として、織物（繊維：ポリエチレンテレフタラート繊維（ＰＥＴ繊維）、たて糸密度：１６本／２５ｍｍ、よこ糸密度：１５本／２５ｍｍ、厚み：１１０μｍ）を用いたこと以外は、実施例１と同様にしてテープ状の防水用シートを得た。 (Example 3)
The same as in Example 1 except that a woven fabric (fiber: polyethylene terephthalate fiber (PET fiber), warp density: 16 threads / 25 mm, weft density: 15 threads / 25 mm, thickness: 110 μm) was used as the base material. Obtained a tape-shaped waterproof sheet.
（実施例４）
　基材として、不織布（繊維：ポリエチレン繊維（ＰＥ繊維）、ＪＸ　ＡＮＣＩ社製のワリフ（登録商標））を用いたこと以外は、実施例１と同様にしてテープ状の防水用シートを得た。 (Example 4)
A tape-shaped waterproof sheet was obtained in the same manner as in Example 1 except that a non-woven fabric (fiber: polyethylene fiber (PE fiber), Warif (registered trademark) manufactured by JX ANCI) was used as the base material.
（実施例５）
　シート本体の材料として以下の材料を用意した。
・アルミニウムシート：１Ｎ３０、厚み２０μｍ
・アルミニウムシート：１Ｎ３０、厚み７μｍ
・接着剤：リニアポリエチレン（直鎖状低密度ポリエチレン。Ｌ－ＬＤＰＥ）を含む接着剤
・基材としての織物（繊維：ガラス繊維、たて糸密度：１６本／２５ｍｍ、よこ糸密度：１５本／２５ｍｍ、厚み：１１０μｍ）
　次に、接着剤を介して、アルミニウムシート（厚み：２０μｍ）と、織物と、アルミニウムシート（厚み：７μｍ）とを接着させて、金属層（アルミニウム層）（厚み：２０μｍ）、接着剤層（厚み：２５μｍ）、基材層、接着剤層（厚み：２５μｍ）、及び、金属層（アルミニウム層）（厚み：７μｍ）がこの順に積層されたシート本体を作製した。
　そして、カレンダーロールにて、前記シート本体の金属層（厚み：７μｍ）に実施例１の粘着剤を８０℃で塗布して粘着剤層を形成し、テープ状の防水用シートを得た。 (Example 5)
The following materials were prepared as the materials for the seat body.
-Aluminum sheet: 1N30, thickness 20 μm
-Aluminum sheet: 1N30, thickness 7 μm
-Adhesive: Adhesive containing linear polyethylene (linear low-density polyethylene. L-LDPE) -Textile as a base material (fiber: glass fiber, warp yarn density: 16/25 mm, weft density: 15/25 mm, Thickness: 110 μm)
Next, the aluminum sheet (thickness: 20 μm), the woven fabric, and the aluminum sheet (thickness: 7 μm) are adhered to each other via an adhesive to form a metal layer (aluminum layer) (thickness: 20 μm) and an adhesive layer (thickness: 20 μm). A sheet body in which a base material layer, an adhesive layer (thickness: 25 μm), and a metal layer (aluminum layer) (thickness: 7 μm) were laminated in this order was produced.
Then, with a calendar roll, the adhesive of Example 1 was applied to the metal layer (thickness: 7 μm) of the sheet body at 80 ° C. to form an adhesive layer, and a tape-shaped waterproof sheet was obtained.
（実施例６）
　粘着剤の材料として以下の材料を用意した。
・Ｓブチル再生ゴム：ムーニー粘度ＭＬ１＋４（１００℃）４４±６、縣護謨社製
・重質炭酸カルシウム：充填剤、篩残分（３５０メッシュ）＝０．５％以下（ＪＩＳ－Ｋ－５１０１に準拠）、丸尾カルシウム社製
・Ｔ－ＲＥＺ　ＲＢ１００：粘着付与剤、石油系樹脂、軟化点１００℃、東燃化学社製
・ポリブテンＨＶ－３００：ポリブテン、軟化剤、流動点０℃、動粘度（４０℃）２６０００ｍｍ２／ｓ、ＪＸ日鉱日石エネルギー社製
・ダイアナプロセスオイルＰＷ－９０：石油系炭化水素、流動点－１０℃以下、出光興産社製
・ノンネンＲ１１３－１０：難燃剤、リン・チッソ系化合物、丸菱油化工業社製
　次に、下記表２の配合割合で粘着剤の材料を混合して粘着剤を得た。 (Example 6)
The following materials were prepared as the materials for the adhesive.
-S-butyl recycled rubber: Mooney viscosity ML1 + 4 (100 ° C) 44 ± 6, manufactured by Akira Gosho Co., Ltd.-Heavy calcium carbonate: Filler, sieve residue (350 mesh) = 0.5% or less (to JIS-K-5101) (Compliant), T-REZ RB100 manufactured by Maruo Calcium: Adhesive, petroleum resin, softening point 100 ° C, Polybutene HV-300 manufactured by Tonen Kagaku Co., Ltd .: Polybutene, softener, flow point 0 ° C, kinematic viscosity (40) ℃) 26000mm 2 / s, JX Nikko Nisseki Energy Co., Ltd., Diana Process Oil PW-90: Petroleum Hydrocarbon, Flow Point -10 ℃ or less, Idemitsu Kosan Co., Ltd., Nonnen R113-10: Flame Retardant, Lynn Chisso System compound, manufactured by Maruhishi Yuka Kogyo Co., Ltd. Next, the pressure-sensitive adhesive materials were mixed at the blending ratios shown in Table 2 below to obtain a pressure-sensitive adhesive.
Figure JPOXMLDOC01-appb-T000002
 　この粘着剤を用いたこと以外は、実施例５と同様にしてテープ状の防水用シートを得た。
Figure JPOXMLDOC01-appb-T000002
 A tape-shaped waterproof sheet was obtained in the same manner as in Example 5 except that this adhesive was used.
（実施例７）
　アクリル樹脂を含む第１コート剤と、ウレタン樹脂を含む第２コート剤とを用意した。
　そして、実施例５の防水用シートの金属層（厚み：２０μｍ）に第２コート剤を塗布することにより第２背面側樹脂層を形成し、該第２背面側樹脂層に第１コート剤を塗布することにより第１背面側樹脂層を形成した。
　これにより、第１背面側樹脂層（厚み：２．５μｍ）、第２背面側樹脂層（厚み：２．５μｍ）、金属層（厚み：２０μｍ）、接着剤層（厚み：２５μｍ）、基材層、接着剤層（厚み：２５μｍ）、金属層（厚み：７μｍ）、及び、粘着剤層がこの順に積層されたテープ状の防水用シートを得た。 (Example 7)
A first coating agent containing an acrylic resin and a second coating agent containing a urethane resin were prepared.
Then, the second coating agent is applied to the metal layer (thickness: 20 μm) of the waterproof sheet of Example 5 to form the second back surface side resin layer, and the first coating agent is applied to the second back surface side resin layer. By coating, the first back surface side resin layer was formed.
As a result, the first back surface side resin layer (thickness: 2.5 μm), the second back surface side resin layer (thickness: 2.5 μm), the metal layer (thickness: 20 μm), the adhesive layer (thickness: 25 μm), and the base material. A tape-shaped waterproof sheet in which a layer, an adhesive layer (thickness: 25 μm), a metal layer (thickness: 7 μm), and an adhesive layer were laminated in this order was obtained.
（実施例８）
　基材として、織物（繊維：ポリエチレンテレフタラート繊維（ＰＥＴ繊維）、たて糸密度：１５本／２５ｍｍ、よこ糸密度：１５本／２５ｍｍ、厚み：１１０μｍ）を用いたこと以外は、実施例５と同様にしてテープ状の防水用シートを得た。 (Example 8)
The same as in Example 5 except that a woven fabric (fiber: polyethylene terephthalate fiber (PET fiber), warp density: 15 threads / 25 mm, weft density: 15 threads / 25 mm, thickness: 110 μm) was used as the base material. Obtained a tape-shaped waterproof sheet.
（実施例９）
　シート本体の材料として以下の材料を用意した。
・アルミニウムシート：１Ｎ３０、厚み２０μｍ
・アルミニウムシート：１Ｎ３０、厚み７μｍ
・接着剤：リニアポリエチレン（Ｌ－ＬＤＰＥ）を含む接着剤
・基材としての織物（繊維：ガラス繊維、たて糸密度：１６本／２５ｍｍ、よこ糸密度：１５本／２５ｍｍ、厚み：１１０μｍ）
・ポリエチレンテレフタラート樹脂フィルム（ＰＥＴフィルム）：厚み５μｍ
　次に、接着剤を介して、アルミニウムシート（厚み：２０μｍ）と、織物と、アルミニウムシート（厚み：７μｍ）と、ＰＥＴフィルムとを接着させて、金属層（アルミニウム層）（厚み：２０μｍ）、接着剤層（厚み：２５μｍ）、基材層、接着剤層（厚み：２５μｍ）、金属層（アルミニウム層）（厚み：７μｍ）、及び接着面側樹脂層がこの順に積層されたシート本体を作製した。
　そして、カレンダーロールにて、前記シート本体の接着面側樹脂層に実施例１の粘着剤を８０℃で塗布して粘着剤層を形成し、テープ状の防水用シートを得た。 (Example 9)
The following materials were prepared as the materials for the seat body.
-Aluminum sheet: 1N30, thickness 20 μm
-Aluminum sheet: 1N30, thickness 7 μm
・ Adhesive: Adhesive containing linear polyethylene (L-LDPE) ・ Textile as a base material (fiber: glass fiber, warp yarn density: 16/25 mm, weft density: 15/25 mm, thickness: 110 μm)
-Polyethylene terephthalate resin film (PET film): Thickness 5 μm
Next, the aluminum sheet (thickness: 20 μm), the woven fabric, the aluminum sheet (thickness: 7 μm), and the PET film are adhered to each other via an adhesive to form a metal layer (aluminum layer) (thickness: 20 μm). A sheet body in which an adhesive layer (thickness: 25 μm), a base material layer, an adhesive layer (thickness: 25 μm), a metal layer (aluminum layer) (thickness: 7 μm), and a resin layer on the adhesive surface side are laminated in this order is produced. did.
Then, with a calendar roll, the adhesive of Example 1 was applied to the adhesive surface side resin layer of the sheet body at 80 ° C. to form an adhesive layer, and a tape-shaped waterproof sheet was obtained.
（比較例１）
　市販のテープ状の防水用シートを用意した。
　該防水用シートは、ポリエチレンテレフタラートフィルム（ＰＥＴフィルム）層（厚み：２５μｍ）、接着剤層（厚み：３μｍ）、アルミニウムシート（厚み：２５μｍ）、接着剤層（厚み：３μｍ）、ポリエチレンテレフタラートフィルム（ＰＥＴフィルム）層（厚み：２５μｍ）、接着剤層（厚み：３μｍ）、アルミニウムシート（厚み：１０μｍ）、接着剤層（厚み：３μｍ）、ポリエチレンテレフタラートフィルム（ＰＥＴフィルム）層（厚み：２５μｍ）、及び、アルミニウムシート（厚み：８μｍ）が積層されたテープ状の防水用シート（３Ｍ社製）である。
　粘着剤層は、アクリル共重合体を含んでいる。 (Comparative Example 1)
A commercially available tape-shaped waterproof sheet was prepared.
The waterproof sheet includes a polyethylene terephthalate film (PET film) layer (thickness: 25 μm), an adhesive layer (thickness: 3 μm), an aluminum sheet (thickness: 25 μm), an adhesive layer (thickness: 3 μm), and a polyethylene terephthalate. Film (PET film) layer (thickness: 25 μm), adhesive layer (thickness: 3 μm), aluminum sheet (thickness: 10 μm), adhesive layer (thickness: 3 μm), polyethylene terephthalate film (PET film) layer (thickness:: 25 μm) and a tape-shaped waterproof sheet (manufactured by 3M) in which an aluminum sheet (thickness: 8 μm) is laminated.
The pressure-sensitive adhesive layer contains an acrylic copolymer.
＜曲げかたさ、及び、曲げ回復＞
　防水用シートの曲げかたさ、及び、曲げ回復は、上述した方法で測定した。 <Bending hardness and bending recovery>
The bending hardness and bending recovery of the waterproof sheet were measured by the above-mentioned method.
＜施工性（巻き付け外観）＞
　工場の配管を覆うジャケットカバーどうしの継ぎ目部分を塞ぐように、継ぎ目部分に防水用シートを巻き付け、この巻き付けの際に防水用シートに発生した水みち（シワ）を撫でつけにより無くすことができるかを目視で確認し、以下の基準で評価をした。
　×：水みち（シワ）が簡単には無くならなかった。
　〇：水みち（シワ）が簡単に無くなった。 <Workability (wrapping appearance)>
Is it possible to wrap a waterproof sheet around the seam so as to close the seam between the jacket covers that cover the factory piping, and stroke the water path (wrinkles) generated on the waterproof sheet during this winding? Was visually confirmed and evaluated according to the following criteria.
×: Water michi (wrinkles) did not disappear easily.
〇: Water michi (wrinkles) disappeared easily.
＜防水性＞
　テープ状の防水用シートを２枚用意した（第１防水用シート及び第２防水用シート）。
　次に、第１防水用シート及び第２防水用シートを、長さ方向の半分の部分で、粘着剤層が対面するように接着させた。
　そして、第１防水用シート及び第２防水用シートの残りの部分の粘着剤層（縦３０ｍｍ×横５０ｍｍ）の中心付近に、青色の塩化コバルト紙（縦１０ｍｍ×横３０ｍｍ）を貼り付けた。
　次に、前記残りの部分の粘着剤層（縦３０ｍｍ×横５０ｍｍ）全体を覆うように、前記残りの部分の粘着剤層（縦３０ｍｍ×横５０ｍｍ）にアクリル板（縦５０ｍｍ×横１００ｍｍ）を貼り付けることにより、試料を得た。
　そして、室温（２３℃）、湿度５０％の場所で該試料を静置し、静置してから３時間後に、塩化コバルト紙の色の変化の有無を目視で確認し、以下の基準で評価をした。
　なお、青色の塩化コバルト紙は、水に触れると赤色に変わる。
　×：塩化コバルト紙が赤色に変わっていた。
　〇：塩化コバルト紙が青色のままだった。 <Waterproof>
Two tape-shaped waterproof sheets were prepared (first waterproof sheet and second waterproof sheet).
Next, the first waterproof sheet and the second waterproof sheet were adhered so that the adhesive layers faced each other at the half portion in the length direction.
Then, blue cobalt chloride paper (length 10 mm x width 30 mm) was attached near the center of the adhesive layer (length 30 mm x width 50 mm) of the remaining portion of the first waterproof sheet and the second waterproof sheet.
Next, an acrylic plate (length 50 mm x width 100 mm) is placed on the remaining part of the pressure-sensitive adhesive layer (length 30 mm x width 50 mm) so as to cover the entire adhesive layer (length 30 mm x width 50 mm) of the remaining portion. A sample was obtained by pasting.
Then, the sample is allowed to stand at room temperature (23 ° C.) and a humidity of 50%, and 3 hours after the standing, the presence or absence of color change of the cobalt chloride paper is visually confirmed and evaluated according to the following criteria. Did.
The blue cobalt chloride paper turns red when it comes in contact with water.
X: Cobalt chloride paper turned red.
〇: Cobalt chloride paper remained blue.
＜耐薬品性＞
　工場の配管を覆うジャケットカバーどうしの継ぎ目部分を塞ぐように、継ぎ目部分に防水用シートを巻き付けた状態で防水用シートの外側に塩酸水溶液（塩酸の濃度：１０質量％）を吹き付けて、２４時間後に防水用シートの外側の状態の変化を目視で確認し、以下の基準で評価をした。
　×：背面側のアルミニウムシートが溶けたことが確認でき、もしくは、防水用シートが白化したことが確認できた。
　〇：背面側のアルミニウムシートが溶けたことが確認できず、且つ、防水用シートが白化したことが確認できなかった。
　また、塩酸水溶液（塩酸の濃度：１０質量％）を水酸化ナトリウム水溶液（水酸化ナトリウムの濃度：１０質量％）に変えて、同様な評価試験をした。 <Chemical resistance>
With the waterproof sheet wrapped around the seam so as to close the seam between the jacket covers that cover the factory piping, a hydrochloric acid aqueous solution (hydrochloric acid concentration: 10% by mass) is sprayed on the outside of the waterproof sheet for 24 hours. Later, the change in the condition of the outside of the waterproof sheet was visually confirmed and evaluated according to the following criteria.
X: It was confirmed that the aluminum sheet on the back side had melted, or it was confirmed that the waterproof sheet had whitened.
〇: It could not be confirmed that the aluminum sheet on the back side had melted, and it could not be confirmed that the waterproof sheet had whitened.
Further, the hydrochloric acid aqueous solution (hydrochloric acid concentration: 10% by mass) was changed to a sodium hydroxide aqueous solution (sodium hydroxide concentration: 10% by mass), and the same evaluation test was conducted.
＜耐候性（ＳＱＷＭでの外観変化）＞
　防水用シートを粘着剤側が内側になるようにスーパーキセノンウェザーメーター（ＳＱＷＭ）に設置し、１０００時間後に、防水用シートの外側の状態の変化を目視で確認し、以下の基準で評価をした。
　×：防水用シートが変色した。
　〇：防水用シートが変色しなかった。 <Weather resistance (change in appearance with SQWM)>
The waterproof sheet was placed on the Super Xenon Weather Meter (SQWM) so that the adhesive side was on the inside, and after 1000 hours, the change in the state of the outside of the waterproof sheet was visually confirmed and evaluated according to the following criteria.
X: The waterproof sheet has discolored.
〇: The waterproof sheet did not discolor.
＜ＵＬ９４ＨＦ試験（改）＞
　ＵＬ９４ＨＦ試験（改）は、ＵＬ９４ＨＦ（発泡材料の水平燃焼試験）（ＩＳＯ３５８２、ＪＩＳ　Ｋ　６４００－６、ＡＳＴＭ　Ｄ４９８６）に基本的には従って実施し、燃焼具合を目視で確認し、以下の基準で評価をした。
　ただし、ＵＬ９４ＨＦ試験での着火では、ウィングチップ付きバーナーを用いるが、本件のＵＬ９４ＨＦ試験（改）での着火では、岩谷産業社製トーチバーナー（ＣＢ－ＴＣ－ＯＣ）を用いた。
　×：防水用シートが５秒以内に着火した。
　○：防水用シートが５秒以内には着火しなかった。 <UL94HF test (revised)>
The UL94HF test (revised) is basically carried out in accordance with UL94HF (horizontal combustion test of foam material) (ISO3582, JIS K 6400-6, ASTM D4986), and the combustion condition is visually confirmed and evaluated according to the following criteria. Did.
However, a burner with a wing tip was used for ignition in the UL94HF test, but a torch burner (CB-TC-OC) manufactured by Iwatani Corp. was used for ignition in the UL94HF test (revised) in this case.
X: The waterproof sheet ignited within 5 seconds.
◯: The waterproof sheet did not ignite within 5 seconds.
＜炎拡散指数＞
　炎拡散指数（ＦＳＩ）は、ＡＳＴＭ　Ｅ　８４（被着体：０．５ｍｍｔの亜鉛板）に準拠して測定した。 <Flame diffusion index>
The flame diffusion index (FSI) was measured according to ASTM E 84 (adhesion: 0.5 mmt zinc plate).
＜煙生成指数＞
　煙生成指数（ＳＤＩ）は、ＡＳＴＭ　Ｅ　８４（被着体：０．５ｍｍｔの亜鉛板）に準拠して測定した。 <Smoke generation index>
The smoke generation index (SDI) was measured according to ASTM E 84 (adhesion: 0.5 mmt zinc plate).
＜引張強さ＞
　引張強さは、ＰＳＴＣ－１３１に準拠して測定した。 <Tensile strength>
The tensile strength was measured according to PSTC-131.
＜１８０°引き剥がし粘着力＞
　１８０°引き剥がし粘着力は、ＰＳＴＣ－１０１（圧着時間：３０分、被着体：ＳＵＳ３０４ＢＡ板）に準拠して測定した。 <180 ° peeling adhesive strength>
The 180 ° peeling adhesive strength was measured according to PSTC-101 (crimping time: 30 minutes, adherend: SUS304BA plate).
　結果を下記表３に示す。 The results are shown in Table 3 below.
Figure JPOXMLDOC01-appb-T000003
Figure JPOXMLDOC01-appb-T000003
１：防水用シート、２：粘着剤層、３：シート本体、
１１：接着面、１２：背面、
３１：基材層、３２：金属層、３２ａ：第１金属層、３２ｂ：第２金属層、３３：接着剤
層、３３ａ：第１接着剤層、３３ｂ：第２接着剤層、３３ｃ：第３接着剤層、３４：背面
側樹脂層、３５、接着面側樹脂層、
１００：剥離紙
 
  1: Waterproof sheet 2: Adhesive layer 3: Sheet body,
11: Adhesive surface, 12: Back surface,
31: Base material layer, 32: Metal layer, 32a: First metal layer, 32b: Second metal layer, 33: Adhesive layer, 33a: First adhesive layer, 33b: Second adhesive layer, 33c: First 3 Adhesive layer, 34: Back side resin layer, 35, Adhesive surface side resin layer,
100: Release paper

Claims (13)

  1. 　被着体に接着される接着面と、該接着面とは反対の面である背面とを有する防水用シートであって、
    　曲げかたさが、５ｇｆ・ｃｍ２／ｃｍ以下であり、
    　前記接着面を有し、且つ、粘着剤で形成された粘着剤層と、前記背面側から前記粘着剤層に接し、１又は２以上の層を有するシート本体とを備え、
    　前記シート本体には、金属で形成された金属層が１又は２以上含まれている、防水用シート。     A waterproof sheet having an adhesive surface to be adhered to an adherend and a back surface opposite to the adhesive surface.
    Bending is 5 gf · cm 2 / cm or less,
    It comprises a pressure-sensitive adhesive layer having the adhesive surface and formed of an adhesive, and a sheet body which is in contact with the pressure-sensitive adhesive layer from the back surface side and has one or more layers.
    The sheet body is a waterproof sheet containing one or more metal layers made of metal.
  2. 　曲げ回復が、０．５ｇｆ・ｃｍ／ｃｍ以上である、請求項１に記載の防水用シート。 The waterproof sheet according to claim 1, wherein the bending recovery is 0.5 gf · cm / cm or more.
  3. 　前記シート本体は、織物、不織布、又は、フィルムで形成された基材層を含む、請求項１又は２に記載の防水用シート。 The waterproof sheet according to claim 1 or 2, wherein the sheet body includes a base material layer made of a woven fabric, a non-woven fabric, or a film.
  4. 　前記織物は、ガラス繊維、ポリエチレンテレフタラート繊維、及び、ポリエチレン繊維からなる群より選ばれた１種以上の繊維で形成され、
    　前記不織布は、ポリエチレン繊維で形成され、
    　前記フィルムは、ポリエチレンテレフタラート樹脂、及び、ポリエチレン樹脂からなる群より選ばれた１種以上の樹脂で形成された、請求項３に記載の防水用シート。     The woven fabric is formed of one or more fibers selected from the group consisting of glass fibers, polyethylene terephthalate fibers, and polyethylene fibers.
    The non-woven fabric is made of polyethylene fiber and is made of polyethylene fiber.
    The waterproof sheet according to claim 3, wherein the film is made of one or more resins selected from the group consisting of polyethylene terephthalate resin and polyethylene resin.
  5. 　前記金属層のうちの少なくとも１層は、前記基材層よりも前記背面側に配されている、請求項３又は４に記載の防水用シート。 The waterproof sheet according to claim 3 or 4, wherein at least one of the metal layers is arranged on the back surface side of the base material layer.
  6. 　前記金属層のうちの少なくとも１層は、前記基材層よりも前記接着面側に配されている、請求項３～５の何れか１項に記載の防水用シート。 The waterproof sheet according to any one of claims 3 to 5, wherein at least one of the metal layers is arranged on the adhesive surface side of the base material layer.
  7. 　前記シート本体は、樹脂で形成され、且つ、前記金属層のうちの少なくとも１層よりも前記背面側に配された背面側樹脂層を有し、
    　前記背面側樹脂層は、アクリル樹脂、エポキシ樹脂、ポリエチレンテレフタラート樹脂、ポリエチレン樹脂、ポリエチレンナフタレート樹脂、ポリプロピレン樹脂、ウレタン樹脂、フッ素樹脂、及び、シリコーン樹脂からなる群より選ばれた１種以上の樹脂を含む、請求項１～６の何れか１項に記載の防水用シート。     The sheet body has a back surface resin layer formed of resin and arranged on the back surface side of at least one of the metal layers.
    The back side resin layer is one or more selected from the group consisting of acrylic resin, epoxy resin, polyethylene terephthalate resin, polyethylene resin, polyethylene naphthalate resin, polypropylene resin, urethane resin, fluororesin, and silicone resin. The waterproof sheet according to any one of claims 1 to 6, which contains a resin.
  8. 　前記シート本体は、樹脂で形成され、且つ、前記金属層のうちの少なくとも１層よりも前記接着面側に配された接着面側樹脂層を有し、
    　前記接着面側樹脂層は、ポリエチレンテレフタラート樹脂、及び、ポリエチレン樹脂からなる群より選ばれた１種以上の樹脂を含む、請求項１～７の何れか１項に記載の防水用シート。     The sheet body has a resin layer on the adhesive surface side, which is formed of resin and is arranged on the adhesive surface side of at least one of the metal layers.
    The waterproof sheet according to any one of claims 1 to 7, wherein the adhesive surface side resin layer contains a polyethylene terephthalate resin and one or more resins selected from the group consisting of polyethylene resin.
  9. 　前記金属層のうち少なくとも１層は、アルミニウム、ステンレス鋼、及び、チタンからなる群より選ばれた１種以上の金属を含む、請求項１～８の何れか１項に記載の防水用シート。 The waterproof sheet according to any one of claims 1 to 8, wherein at least one of the metal layers contains one or more metals selected from the group consisting of aluminum, stainless steel, and titanium.
  10. 　前記粘着剤は、固形粘着剤である、請求項１～９の何れか１項に記載の防水用シート。 The waterproof sheet according to any one of claims 1 to 9, wherein the pressure-sensitive adhesive is a solid pressure-sensitive adhesive.
  11. 　前記粘着剤は、ブチルゴム、イソプレンゴム、及び、天然ゴムからなる群より選ばれた
    １種以上のゴムを含む、請求項１～１０の何れか１項に記載の防水用シート。     The waterproof sheet according to any one of claims 1 to 10, wherein the pressure-sensitive adhesive contains at least one rubber selected from the group consisting of butyl rubber, isoprene rubber, and natural rubber.
  12. 　前記シート本体の厚みと前記粘着剤層の厚みとの比率（前記シート本体の厚み：前記粘着剤層の厚み）が、１：２０～２：１である、請求項１～１１の何れか１項に記載の防水用シート。 Any one of claims 1 to 11, wherein the ratio of the thickness of the sheet body to the thickness of the pressure-sensitive adhesive layer (thickness of the sheet body: thickness of the pressure-sensitive adhesive layer) is 1: 20 to 2: 1. The waterproof sheet described in the section.
  13. 　前記金属層の合計の厚みと、前記シート本体の厚みとの比率（前記金属層の合計の厚み：前記シート本体の厚み）が、１：３０～２：３である、請求項１～１２の何れか１項に記載の防水用シート。
     
          The ratio of the total thickness of the metal layer to the thickness of the sheet body (total thickness of the metal layer: thickness of the sheet body) is 1:30 to 2: 3, according to claims 1 to 12. The waterproof sheet according to any one of the items.
PCT/JP2021/016872 2020-06-12 2021-04-28 Waterproof sheet WO2021251021A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023119752A1 (en) * 2021-12-21 2023-06-29 日東電工株式会社 Adhesive sheet

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03115482A (en) * 1989-09-29 1991-05-16 Sekaicho Rubber Co Ltd Aluminum foil sheet for waterproofing joint of structures
JPH05247440A (en) * 1992-03-03 1993-09-24 Tajima Roofing Co Ltd Waterproof sealing material
JPH06279754A (en) * 1993-03-29 1994-10-04 Sekaicho Rubber Co Ltd Waterproof tape for roofing ground joint having non-skid performance
JPH07216322A (en) * 1994-02-07 1995-08-15 Sekaicho Rubber Co Ltd Self-adhesive unvulcanized water-proofing rubber sheet or tape developing no rumple during winding and storage and production thereof
JPH11106720A (en) * 1997-09-30 1999-04-20 Sliontec Corp Waterproof adhesive tape for vehicle with special kind of equipment
JP2010121014A (en) * 2008-11-19 2010-06-03 Konishi Co Ltd Waterproof, single-sided adhesive tape
JP2015040280A (en) * 2013-08-23 2015-03-02 日東電工株式会社 Adhesive composition, adhesive sheet, and moisture-permeable waterproof adhesive sheet
JP2019210725A (en) * 2018-06-06 2019-12-12 東洋紡Ｓｔｃ株式会社 Joint tape for waterproof substrate and water proof construction method using the same

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03115482A (en) * 1989-09-29 1991-05-16 Sekaicho Rubber Co Ltd Aluminum foil sheet for waterproofing joint of structures
JPH05247440A (en) * 1992-03-03 1993-09-24 Tajima Roofing Co Ltd Waterproof sealing material
JPH06279754A (en) * 1993-03-29 1994-10-04 Sekaicho Rubber Co Ltd Waterproof tape for roofing ground joint having non-skid performance
JPH07216322A (en) * 1994-02-07 1995-08-15 Sekaicho Rubber Co Ltd Self-adhesive unvulcanized water-proofing rubber sheet or tape developing no rumple during winding and storage and production thereof
JPH11106720A (en) * 1997-09-30 1999-04-20 Sliontec Corp Waterproof adhesive tape for vehicle with special kind of equipment
JP2010121014A (en) * 2008-11-19 2010-06-03 Konishi Co Ltd Waterproof, single-sided adhesive tape
JP2015040280A (en) * 2013-08-23 2015-03-02 日東電工株式会社 Adhesive composition, adhesive sheet, and moisture-permeable waterproof adhesive sheet
JP2019210725A (en) * 2018-06-06 2019-12-12 東洋紡Ｓｔｃ株式会社 Joint tape for waterproof substrate and water proof construction method using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023119752A1 (en) * 2021-12-21 2023-06-29 日東電工株式会社 Adhesive sheet

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