JP6067389B2 - Moisture permeable curing sheet - Google Patents
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Description
本発明は、床板等の木材用養生シートに関するものであり、詳しくは、住宅施工工程中に床板等の木材を覆い、雨水や土泥の汚れ、または作業による損傷等から保護するために使用し、かつ床板等の木材を水分によるシミ、変形やカビなどによる腐食を抑制することが可能で、剥離の際にシートが材料破壊（材破）がし難い透湿性養生シートに関するものである。 The present invention relates to a curing sheet for wood such as floor boards, and more specifically, it is used to cover wood such as floor boards during the construction process of a house and protect it from rain water, dirt and dirt, or damage caused by work. In addition, the present invention relates to a moisture-permeable curing sheet that can suppress corrosion caused by moisture stains, deformation, mold, and the like on wood such as a floorboard, and the sheet is difficult to break down (break).
従来住宅の施工の際、特に２×４工法等のプレハブ建築において床板を、雨水などの水分や作業者の土足汚れ、廃材等から保護するために、養生シートを用いている。例えば特許文献１には、表面に凹凸が形成され、かつ裏面に木材との密着性が良く再剥離性がある粘着樹脂が塗布されてなる合成樹脂シートが開示されている。
前記のような養生シートは合板との密着性も良く、防水性に優れているため雨水などの水分の浸入を防ぐ性能を有している。また、表面には凹凸が形成されており、作業者が滑る危険を軽減しており、施工後には合板を損傷することなく剥離させることが出来る性能もある。
しかしながら、表面に凹凸が形成されていることにより、作業環境によっては作業靴や建材、工具との摩擦で破れや剥れが生じ易くなる。湿気を透過する性能を有していないため、前述のような破れや剥れが生じた際、雨水などの水分が養生シートと合板の間に浸入してしまうと、水分が長期間滞留し続けることでシミ、変形やカビなどによる腐食が発生するという問題がある。
Conventionally, in the construction of a house, a curing sheet is used to protect the floor board from moisture such as rain water, dirt from workers, waste materials, etc., particularly in prefabricated construction such as 2 × 4 construction method. For example, Patent Document 1 discloses a synthetic resin sheet in which irregularities are formed on the front surface and an adhesive resin having good removability is applied to the back surface with good adhesion to wood.
The curing sheet as described above has good adhesion to the plywood and is excellent in waterproofness, so that it has a performance to prevent intrusion of moisture such as rainwater. In addition, the surface is uneven, which reduces the risk of the operator slipping, and has the ability to peel the plywood without damaging it after construction.
However, due to the unevenness formed on the surface, depending on the working environment, tearing or peeling easily occurs due to friction with work shoes, building materials, and tools. Since it does not have the ability to permeate moisture, when water such as rainwater enters between the curing sheet and plywood when tearing or peeling occurs as described above, the water will stay for a long time. However, there is a problem that corrosion due to stains, deformation or mold occurs.
また、特許文献２では、透湿性を有する養生シートが開示されている。しかしながら、透湿性を確保するために粘着層は長手方向に適宜幅で形成されているため、シートとシートの重ねしろの断面や、シートが破れて水が浸入してきた場合、非粘着部が水の通り道となり、合板全体に水が拡がり易く、合板を腐食やシミ、変形から養生する効果が損なわれるという問題がある。
また、特許文献３では、直径１０〜５００μｍの小滴または繊維状に粘着剤が塗布されているため、養生期間完了後に合板から剥離する際、粘着剤の塗布部と非塗布部で懸かる応力差が大きくなるためシートが材破（材料破壊）し、塗布部のシートが合板に残り易いという問題がある。
Moreover, in patent document 2, the curing sheet which has moisture permeability is disclosed. However, since the pressure-sensitive adhesive layer is formed with an appropriate width in the longitudinal direction to ensure moisture permeability, the cross-section of the sheet-to-sheet overlap or the non-adhesive part is water when the sheet breaks and water enters. There is a problem that water becomes easy to spread throughout the plywood, and the effect of curing the plywood from corrosion, stains, and deformation is impaired.
Moreover, in patent document 3, since the adhesive is applied in the form of droplets or fibers having a diameter of 10 to 500 μm, the stress difference between the application part and the non-application part of the adhesive when peeling from the plywood after completion of the curing period Therefore, there is a problem that the sheet breaks down (breaks down the material), and the sheet of the application part tends to remain on the plywood.
本発明は上記課題を解決しようとするものであり、合板（木材）との密着性も良く、施工後には合板（木材）が損傷されることなく剥離することができ、表面の凹凸形成がなくとも作業者が滑る危険性を軽減し、また防水性に優れており、雨水などの水分の浸入を防ぎ、万が一、水分が浸入しても透湿性を有することで水分を放出（透湿）させ、シミ、変形やカビなどによる腐食を抑制し、剥離の際にシートが材破（材料破壊）し難い養生シートを提供することを目的とする。 The present invention is intended to solve the above-mentioned problems, has good adhesion to plywood (wood), can be peeled without damage to plywood (wood) after construction, and has no surface irregularity formation. Both reduce the risk of the operator slipping and are excellent in waterproofness, prevent intrusion of moisture such as rainwater, and release moisture (moisture permeation) by having moisture permeability even if moisture enters. An object of the present invention is to provide a curing sheet that suppresses corrosion due to stains, deformations, molds, and the like, and that the sheet is difficult to break (material destruction) during peeling.
本発明は、上記課題を解決するため次のような構成を有するものである。
即ち（１）に、表面樹脂層、芯部がポリエステル系樹脂で鞘部がポリオレフィン系樹脂の芯鞘繊維からなる不織布層、ポリオレフィン系樹脂からなる微多孔フィルム層、粘着層の順に形成（積層）されてなり、引張強度が縦方向１２０Ｎ／５ｃｍ以上、横方向５０Ｎ／５ｃｍ以上、引裂強度が縦方向３０Ｎ以上、横方向２０Ｎ以上、透湿度が５００ｇ／ｍ２・２４ｈ以上、耐水圧が１０ｋＰａ以上、ＳＵＳ板粘着力が１〜１０Ｎ／２.５ｃｍ、自背面粘着力が０.５〜５Ｎ／２.５ｃｍの透湿性養生シートである。
また、（２）に、該不織布層と該フィルム層が、サーマルラミネート（熱融着ラミネート）法により積層され、貼り合わされた（１）に記載の透湿性養生シートである。
また、（３）に、該粘着層がシート全体面積の８０％以上に粘着樹脂が塗工されたものであり、かつ塗工パターンは全面又は不連続な非塗工部と連続する塗工部とにより形成されたものである（１）〜（２）のいずれかに記載の透湿性養生シートである。
また、（４）に、該不織布層が、引張強度が縦方向８０Ｎ／５ｃｍ以上、横方向３０Ｎ／５ｃｍ以上、引裂強度が縦方向４Ｎ以上、横方向２Ｎ以上、かつ鞘部を構成するポレオレフィン系樹脂の融点温度が１００〜１２０℃である（１）〜（３）のいずれかに記載の透湿性養生シートである。
また、（５）に、該フィルムが、透湿度３０００ｇ／ｍ２・２４ｈ以上、かつ融点温度が１００〜１２０℃である（１）〜（４）のいずれかに記載の透湿性養生シートである。
また、（６）に、該表面樹脂層が長鎖アルキル系樹脂、シリコーン系樹脂、フッ素系樹脂のいずれかを含む樹脂層である（１）〜（５）のいずれかに記載の透湿性養生シートである。
また、（７）に、該粘着層が、水、吸水膨潤樹脂、マイクロカプセル、フィラー等の添加剤を分散させた粘着樹脂で形成されたものである（１）〜（６）のいずれかに記載の透湿性養生シートである。
また、（８）に、該粘着層が、親水性のある粘着樹脂からなる（１）〜（７）のいずれかに記載の透湿性養生シートである。
また、（９）に、該粘着層が、ポリオレフィン系、ポリアクリル系、ポリウレタン系、ポリエステル系、シリコーン系、天然系・合成系ゴムのいずれかの粘着樹脂を含む（１）〜（８）のいずれかに記載の透湿性養生シートである。
The present invention has the following configuration in order to solve the above problems.
That is, in (1), a surface resin layer, a nonwoven fabric layer made of a core-sheath fiber of a polyester resin and a sheath part of a polyolefin resin, a microporous film layer made of a polyolefin resin, and an adhesive layer are formed (laminated) in this order. Tensile strength is 120 N / 5 cm or more in the longitudinal direction, 50 N / 5 cm or more in the transverse direction, tear strength is 30 N or more in the longitudinal direction, 20 N or more in the transverse direction, moisture permeability is 500 g / m 2 · 24 h or more, and water pressure resistance is 10 kPa or more. The moisture-permeable curing sheet has a SUS plate adhesive strength of 1 to 10 N / 2.5 cm and a self-back surface adhesive strength of 0.5 to 5 N / 2.5 cm.
Further, in the moisture permeable curing sheet according to (1), the nonwoven fabric layer and the film layer are laminated and bonded to (2) by a thermal laminating (thermal fusion laminating) method.
Further, in (3), the adhesive layer is one in which an adhesive resin is applied to 80% or more of the total area of the sheet, and the coating pattern is the entire surface or a coating part that is continuous with a discontinuous non-coating part. The moisture-permeable curing sheet according to any one of (1) to (2).
Further, in (4), the nonwoven fabric layer has a tensile strength of 80 N / 5 cm or more in the longitudinal direction, 30 N / 5 cm or more in the transverse direction, a tear strength of 4 N or more in the longitudinal direction, 2 N or more in the transverse direction, and a sheath olefin. It is a moisture-permeable curing sheet in any one of (1)-(3) whose melting point temperature of a system resin is 100-120 degreeC.
Moreover, (5) is the moisture-permeable curing sheet according to any one of (1) to (4), wherein the film has a moisture permeability of 3000 g / m 2 · 24 h or more and a melting point temperature of 100 to 120 ° C. .
Further, in (6), the moisture permeable curing according to any one of (1) to (5), wherein the surface resin layer is a resin layer containing any of a long-chain alkyl resin, a silicone resin, and a fluorine resin. It is a sheet.
Further, in (7), the pressure-sensitive adhesive layer is formed of a pressure-sensitive resin in which additives such as water, a water-absorbing swelling resin, a microcapsule, and a filler are dispersed. It is a moisture-permeable curing sheet as described.
Moreover, (8) is the moisture-permeable curing sheet according to any one of (1) to (7), in which the adhesive layer is made of a hydrophilic adhesive resin.
(9) In (1) to (8), the pressure-sensitive adhesive layer contains any one of polyolefin-based, polyacrylic-based, polyurethane-based, polyester-based, silicone-based, and natural / synthetic rubber-based adhesive resins. The moisture-permeable curing sheet according to any one of the above.
本発明の養生シートは、表面樹脂層、芯部がポリエステル系樹脂で鞘部がポリオレフィン系樹脂の芯鞘繊維からなる不織布層、ポリオレフィン系樹脂からなる微多孔フィルム層、ポリオレフィン系、ポリアクリル系、ポリウレタン系、ポリエステル系、シリコーン系または天然系・合成系ゴム粘着樹脂のいずれかを含む粘着層の順に形成されてなる養生シートであり、ポリオレフィン系樹脂からなる微多孔フィルムが積層されることで、防水性と透湿性を兼ね備えた性能を有し、雨水などの水分から合板（木材）を守り、かつ万が一、水が浸入しても水分を蒸発させて放出をすることが出来る。
更に、養生シートを形成する該不織布層と該微多孔フィルム層とをサーマルラミネート（熱融着ラミネート）で一体化させることで、該微多孔フィルム層の透湿性を大きく損なうことなく、養生シートとして必要な強度が得られ、破れ、引裂等の材料破壊が起き難い養生シートとなる。
更に、養生シートの表面に大きな凹凸を形成させないため、摩擦抵抗が抑えられ、作業者の靴や建材、工具などとの摩擦による破れや剥れが生じ難くなる。また、該表面樹脂層に弱撥水性の樹脂を付与することでシートの表面に水が溜まりにくく、水は弾き、表面に大きな凹凸が形成されていなくとも雨天でも滑り難いものとなる。
更に、本発明は、該粘着層に多数の微多孔を形成するよう添加剤を分散させたり、親水性粘着樹脂を用いたり、不連続な非塗工にするなどにより透湿性を失うことなく、合板（木材）との粘着性を維持した再剥離性を有する養生シートとなる。
以上のように、従来使用されてきた養生シートに比し、合板（木材）を水分によるシミ、変形やカビなどによる腐食を抑制することが可能となり、作業における施工後のシート破れや剥れも軽減することが可能となる。
The curing sheet of the present invention is a surface resin layer, a nonwoven fabric layer made of a core-sheath fiber of a polyester resin and a sheath part of a polyolefin resin, a microporous film layer made of a polyolefin resin, a polyolefin, a polyacrylic, It is a curing sheet formed in the order of an adhesive layer containing any of polyurethane, polyester, silicone or natural / synthetic rubber adhesive resin, and by laminating a microporous film made of polyolefin resin, It has a performance that is both waterproof and moisture permeable, protects plywood (wood) from moisture such as rainwater, and can evaporate and release moisture even if water enters.
Furthermore, by integrating the non-woven fabric layer forming the curing sheet and the microporous film layer by thermal lamination (thermal fusion laminating), the moisture permeability of the microporous film layer is not significantly impaired as a curing sheet. Necessary strength can be obtained, and a cured sheet that does not easily break and is not easily destroyed.
Furthermore, since no large irregularities are formed on the surface of the curing sheet, frictional resistance is suppressed, and tearing or peeling due to friction with an operator's shoes, building materials, tools, and the like is less likely to occur. In addition, by applying a weak water-repellent resin to the surface resin layer, water does not easily accumulate on the surface of the sheet, and water can be repelled and slippery even in the rain even if large irregularities are not formed on the surface.
Furthermore, the present invention, without dispersing the moisture permeability by dispersing the additive to form a large number of micropores in the adhesive layer, using a hydrophilic adhesive resin, discontinuous non-coating, etc. It becomes the curing sheet which has the removability which maintained the adhesiveness with the plywood (wood).
As described above, compared to the conventionally used curing sheets, it is possible to suppress plywood (wood) from corrosion due to moisture stains, deformation, mold, etc., and sheet tearing and peeling after construction in work It becomes possible to reduce.
本発明の養生シートは、表面樹脂層、不織布層、微多孔フィルム層、粘着層の順に形成されてなる養生シートである。 The curing sheet of the present invention is a curing sheet formed in the order of a surface resin layer, a nonwoven fabric layer, a microporous film layer, and an adhesive layer.
前記不織布層に用いる不織布は、芯部がポリエステル系樹脂で鞘部がポリオレフィン系樹脂の芯鞘繊維からなる不織布であり、ポリオレフィン系樹脂としては、ポリエチレン等が挙げられる。
ポリエステル系樹脂のみからなる不織布で、サーマルラミネートするには２６０℃以上の温度が必要であるために、熱でポリオレフィン系樹脂からなるフィルムの微多孔を塞がれ透湿性を発揮させることが出来なくなる虞がある。微多孔を塞ぐことがない温度で加工した場合は、積層することが出来ない。また、ポリオレフィン系樹脂のみからなる不織布では、強度が不十分で、養生シートとして使用しシート上を歩行すると破れる虞がある。
ポリオレフィン系樹脂の融点は１００〜１２０℃であることが好ましい。１２０℃を超えると、ポリオレフィン系樹脂からなる微多孔フィルムとサーマルラミネート（熱融着ラミネート）で一体積層させる際に高温で該フィルムの微多孔を塞いでしまう可能性があり、充分な透湿性を発揮させることが出来なくなる虞がある。
また、該不織布の製法は、特に限定することなくケミカルボンド、サ−マルボンド、ニ−ドルパンチ、ステッチボンド、スパンレ−ス、スパンボンド、メルトブロ−、湿式法など公知の製法でよい。
The non-woven fabric used for the non-woven fabric layer is a non-woven fabric comprising a core-sheath fiber having a polyester resin in the core and a polyolefin resin in the sheath. Examples of the polyolefin resin include polyethylene.
A non-woven fabric made of polyester resin only, and a temperature of 260 ° C or higher is required for thermal lamination. Therefore, the microporous film of polyolefin resin is blocked by heat, making it impossible to exhibit moisture permeability. There is a fear. If processed at a temperature that does not block the micropores, it cannot be laminated. Moreover, in the nonwoven fabric which consists only of polyolefin resin, intensity | strength is inadequate and when using it as a curing sheet and walking on a sheet | seat, there exists a possibility of breaking.
The melting point of the polyolefin resin is preferably 100 to 120 ° C. When the temperature exceeds 120 ° C, there is a possibility that the micropores of the polyolefin resin may be blocked at a high temperature when integrally laminated with a microporous film made of polyolefin resin and a thermal laminate (heat fusion laminate). There is a risk that it can no longer be achieved.
Moreover, the manufacturing method of this nonwoven fabric may be a well-known manufacturing method, such as a chemical bond, a thermal bond, a needle punch, a stitch bond, a spunlace, a spunbond, a melt blow, and a wet method, without being specifically limited.
また、前記不織布は、引張強度が縦（長さ）方向８０Ｎ／５ｃｍ以上、横（幅）方向３０Ｎ／５ｃｍ以上、引裂強度が縦方向４Ｎ以上、横方向２Ｎ以上である事が好ましい。ロール状に巻き取られた不織布の長手方向の長さを縦方向とし、この強度未満だと、施工する際に裂けたり、施工した後でその上を歩行する際、破れや裂けが発生する虞がある。
また、目付は３０〜１００ｇ／ｍ２が好ましい。３０ｇ／ｍ２未満だと充分な強度が得られないばかりか、ハリ感やコシ感がない（しなやかで柔らかすぎる）ため施工する際、展開（巻出し）がし難い。１００ｇ／ｍ２を超えると、シート自体が硬くなり、ロール状に巻きにくくなるばかりか、重くなるため取り扱いにくく施工性が悪くなる虞がある。
The nonwoven fabric preferably has a tensile strength of 80 N / 5 cm or more in the longitudinal (length) direction, 30 N / 5 cm or more in the transverse (width) direction, and a tear strength of 4 N or more in the longitudinal direction and 2 N or more in the transverse direction. If the length in the longitudinal direction of the nonwoven fabric wound up in the form of a roll is the longitudinal direction and the strength is less than this, there is a risk of tearing during construction or tearing or tearing when walking on it after construction. There is.
The basis weight is preferably 30 to 100 g / m 2 . When it is less than 30 g / m 2 , not only a sufficient strength cannot be obtained, but there is no firmness or firmness (it is supple and soft), so that it is difficult to unfold (unwind) during construction. If it exceeds 100 g / m 2 , the sheet itself becomes hard and not easily wound in a roll shape, but it becomes heavy and is difficult to handle and the workability may be deteriorated.
前記微多孔フィルム層は、ポリオレフィン系樹脂からなり、ポリオレフィン系樹脂としては、ポリエチレン等が挙げられる。
ポリオレフィン系樹脂の融点は１００〜１２０℃であることが好ましい。１２０℃を超えると、不織布と微多孔フィルムをサーマルラミネート（熱融着ラミネート）する際に、高温にするためのエネルギー代が高くなるばかりでなく、該微多孔フィルム層の微多孔を塞いでしまう可能性があり、充分な透湿性を発揮させることが出来なくなる虞がある。
該微多孔フィルム層を構成するフィルムの製法としては、炭化カルシウムを内添し、延伸処理を施すことで微多孔を作る一般的な製法でよい。
The microporous film layer is made of a polyolefin resin, and examples of the polyolefin resin include polyethylene.
The melting point of the polyolefin resin is preferably 100 to 120 ° C. When the temperature exceeds 120 ° C., when the nonwoven fabric and the microporous film are subjected to thermal lamination (thermal fusion lamination), not only the energy cost for increasing the temperature becomes high, but also the micropores of the microporous film layer are blocked. There is a possibility that sufficient moisture permeability cannot be exhibited.
As a manufacturing method of the film constituting the microporous film layer, a general manufacturing method in which micropores are formed by internally adding calcium carbide and performing a stretching treatment may be used.
また、該微多孔フィルム層は、透湿度３０００ｇ／ｍ２・２４ｈ以上であることが好ましい。３０００ｇ／ｍ２・２４ｈ未満であると、該不織布層とのサーマルラミネート（熱融着ラミネート）などの接着加工により、透湿性養生シートとして必要な透湿度を発揮出来なくなる虞がある。耐水圧は８ｋＰａ以上であることが好ましい。８ｋＰａ未満であると、施工し養生している期間にシート表面から水が浸透してしまう虞がある。
また、該微多孔フィルム層の厚さは、２０〜８０μｍであることが好ましい。厚さが２０μｍ未満であると、充分な強度が得られていないばかりか、該不織布とのサーマルラミネート（熱融着ラミネート）の際、該微多孔フィルム層が熱の影響を受けやすく、融解して微多孔を塞いでしまう虞がある。また、８０μｍより厚いと、該不織布層とのサーマルラミネート（熱融着ラミネート）の時、熱の伝わりが遅く、加工温度を上げる又は加工速度を遅くしなければ、充分な接着性が得られずに、不織布層と微多孔フィルム層の間で層間剥離を生じる虞がある。
また、該微多孔フィルム層の濡れ張力は、３４ｄｙｎｅ／ｃｍ以上が好ましい。３４ｄｙｎｅ／ｃｍ未満だと、該微多孔フィルム層と該粘着層との馴染みが悪く、養生期間を終え、養生シートを剥がす際に、合板等の養生対象物に糊が転移し糊残りする虞がある。濡れ張力を改善する方法として、該微多孔フィルム層の表面の粗面化や親水化処理、活性化処理が挙げられるが、なかでも放電処理等による活性化処理することが量産性、品質安定性の面で好ましい。
The microporous film layer preferably has a moisture permeability of 3000 g / m 2 · 24 h or more. If it is less than 3000 g / m 2 · 24 h, the moisture permeability necessary for the moisture-permeable curing sheet may not be exhibited due to adhesion processing such as thermal lamination (thermal fusion lamination) with the nonwoven fabric layer. The water pressure resistance is preferably 8 kPa or more. If it is less than 8 kPa, water may permeate from the sheet surface during construction and curing.
Moreover, it is preferable that the thickness of this microporous film layer is 20-80 micrometers. When the thickness is less than 20 μm, not only the sufficient strength is not obtained, but also the microporous film layer is easily affected by heat during thermal lamination (thermal fusion lamination) with the nonwoven fabric and melts. There is a risk of blocking the micropores. On the other hand, if it is thicker than 80 μm, the heat transfer is slow during thermal lamination (heat fusion lamination) with the nonwoven fabric layer, and sufficient adhesion cannot be obtained unless the processing temperature is increased or the processing speed is slowed down. Furthermore, there is a risk of delamination between the nonwoven fabric layer and the microporous film layer.
The wetting tension of the microporous film layer is preferably 34 dyne / cm or more. If it is less than 34 dyne / cm, the familiarity between the microporous film layer and the adhesive layer is poor, and when the curing period is finished and the curing sheet is peeled off, there is a possibility that the glue may transfer to the curing target object such as plywood and the adhesive residue may remain. is there. Examples of methods for improving the wetting tension include surface roughening, hydrophilic treatment, and activation treatment of the microporous film layer. Among them, activation treatment by discharge treatment or the like is suitable for mass production and quality stability. It is preferable in terms of
本発明の粘着層に用いる粘着樹脂は、合板等への密着性が良好で、紫外線による劣化が小さく、湿潤状態になっても剥がれず粘着（密着）性を維持し、再剥離性があるものがよい。
粘着樹脂としては、ポリオレフィン系、ポリアクリル系、ポリウレタン系、ポリエステル系、シリコーン系、天然系・合成系ゴムが挙げられ、特にアクリル系樹脂は、上記性能の調整がし易く、添加剤も混入し易く、加工性も良好であるため、好適に使用できる。
また、養生シートの透湿性を発揮させるためには、親水性のある粘着樹脂を使用することが好ましい。親水性のある粘着樹脂を用いれば、合板に含まれる水分を引きつける効果もあるため、より効率的に水分を放出（透湿）する効果が得られる。
また、前記粘着樹脂の塗工量は、５〜３０ｇ／ｍ２が好ましい。５ｇ／ｍ２未満であると、充分な粘着力が得られず、３０ｇ／ｍ２を超えると、養生後にシートを剥がす際、粘着剤が養生対象物に残り易く、また、透湿性能も発揮し難くなる。粘着性は、ＪＩＳ Ｇ４３０５に規定するＳＵＳ３０４鋼板で、表面仕上げがＢＡ（冷間圧延後、光輝処理）の鋼板を使用して測定した際のＳＵＳ板粘着力が１〜１０Ｎ／２.５ｃｍ、自背面粘着力（養生シート自体の表面と粘着層との粘着力）が０.５〜５Ｎ／２.５ｃｍである必要がある。
ＳＵＳ板との粘着力が１Ｎ／２.５ｃｍ未満だと、合板等に養生施工した際、養生物から剥がれる虞があり、１０Ｎ／２．５ｃｍを超えると、合板から引き剥がす際に、合板の表面が毛羽立つなどの傷みが生じ、また養生シート自体が破れて剥がし難い。自背面との粘着力が０.５Ｎ／２.５ｃｍ未満だと、養生シート同士を重ねて貼り合せた部分から剥がれが生じ、雨水等の水分が浸入してしまう虞がある。また、５．０Ｎ／２．５ｃｍを超えると、シートを巻状態から展開する際に破れたり、合板から引き剥がす際に、シートが破れて剥がし難い。
The pressure-sensitive adhesive resin used in the pressure-sensitive adhesive layer of the present invention has good adhesion to plywood, etc., is less deteriorated by ultraviolet rays, maintains adhesion (adhesion) without peeling even when wet, and has removability Is good.
Examples of adhesive resins include polyolefin, polyacrylic, polyurethane, polyester, silicone, and natural / synthetic rubbers. In particular, acrylic resins are easy to adjust the performance and contain additives. Since it is easy and has good workability, it can be suitably used.
Moreover, in order to exhibit the moisture permeability of a curing sheet, it is preferable to use hydrophilic adhesive resin. If a hydrophilic adhesive resin is used, there is an effect of attracting moisture contained in the plywood, so that an effect of more efficiently releasing (moisture permeable) moisture can be obtained.
Moreover, the coating amount of the adhesive resin is preferably 5 to 30 g / m 2 . If it is less than 5 g / m 2 , sufficient adhesive strength cannot be obtained, and if it exceeds 30 g / m 2 , the adhesive tends to remain on the object to be cured when the sheet is peeled after curing, and also exhibits moisture permeability. It becomes difficult to do. The adhesiveness is SUS304 steel plate specified in JIS G4305, and the SUS plate adhesive strength when measured using a steel plate with a surface finish of BA (after cold rolling and brightening treatment) is 1 to 10 N / 2.5 cm. The back surface adhesive force (the adhesive force between the surface of the curing sheet itself and the adhesive layer) needs to be 0.5 to 5 N / 2.5 cm.
If the adhesive strength to the SUS board is less than 1N / 2.5cm, there is a risk of peeling from the living organism when it is cured on plywood, etc. If it exceeds 10N / 2.5cm, when peeling from the plywood, The surface becomes fuzzy and the like, and the curing sheet itself is torn and difficult to peel off. If the adhesive strength with the back surface is less than 0.5 N / 2.5 cm, peeling may occur from the portion where the curing sheets are stacked and bonded together, and moisture such as rainwater may enter. On the other hand, if it exceeds 5.0 N / 2.5 cm, the sheet is torn when being unrolled from the wound state, or the sheet is torn and difficult to peel off when being peeled off from the plywood.
また、該粘着樹脂に水、吸水膨潤樹脂、マイクロカプセル、フィラーなどの添加剤を混入し分散させ、乾燥皮膜化させることで微多孔フィルム層の透湿性を向上させることができる。これは粘着層形成時に粘着樹脂が水、吸水膨潤樹脂などを含むことにより、皮膜化（乾燥）させる際に樹脂中の水分が揮発し、湿気が動く通り道が形成される。また、マイクロカプセルは破裂や膨張等により、フィラーは嵩張ることで同様に通り道が形成され透湿性を付与しやすくなる。
また、該粘着層における粘着樹脂の塗工パターンは、シート全面の塗工に限らず、不連続な非塗工部と連続的な塗工部とにより形成された塗工パターンであってもよい。屋外曝露環境下で充分な粘着（密着）性を確保するには、塗工面積はシート全体の８０％以上であることが好ましい。また、非塗工部が連続していると、その隙間が水の通り道になってしまうため、不連続な非塗工部であることが好ましい。
該粘着樹脂の塗工方法としては、ナイフコーティング法、グラビアロールコーティング法、ロールコーティング法、フレキソコーティング法、スプレー吹き付けコーティング法等の公知方法を用いる。
Moreover, the moisture permeability of a microporous film layer can be improved by mixing and disperse | distributing additives, such as water, a water absorption swelling resin, a microcapsule, and a filler, to this adhesive resin, and making it a dry film. This is because when the pressure-sensitive adhesive layer is formed, the pressure-sensitive adhesive resin contains water, a water-absorbing swelling resin, etc., so that when the film is formed (dried), the water in the resin is volatilized and a path through which moisture moves is formed. In addition, the microcapsules are ruptured, expanded, or the like, and the filler is bulky, so that a passage is formed in the same manner, and moisture permeability is easily imparted.
Moreover, the coating pattern of the adhesive resin in the adhesive layer is not limited to the coating on the entire surface of the sheet, but may be a coating pattern formed by discontinuous non-coating portions and continuous coating portions. . In order to ensure sufficient adhesion (adhesion) in an outdoor exposure environment, the coating area is preferably 80% or more of the entire sheet. Moreover, when the non-coating part is continuous, the gap becomes a passage for water, and therefore, it is preferable that the non-coating part is a discontinuous non-coating part.
As a method for applying the adhesive resin, known methods such as a knife coating method, a gravure roll coating method, a roll coating method, a flexo coating method, and a spray spray coating method are used.
本発明の表面樹脂層に用いる樹脂は、表面樹脂層表面に弱い撥水性および耐摩擦性を付与できるものが好ましい。樹脂としては、フッ素系樹脂、シリコーン系樹脂、長鎖アルキル系樹脂などが挙げられる。
また、塗工量は、０.１〜２.０ｇ／ｍ２であることが好ましい。０.１ｇ／ｍ２未満であると、自背面粘着力が強く、ロール状に巻きとった（巻き上げた）場合、シート表面の表面樹脂層と粘着層がブロッキングし不織布表面が毛羽立つなどの損傷を生じる虞や、撥水性が弱すぎて雨天時はシート表面に水が滞留する（水の皮膜が形成される）状態となり易く、作業者が滑る虞がある。２.０ｇ／ｍ２以上を超えると、自背面粘着力が弱くなり過ぎ、施工した養生シート同士を重ねて貼り合せした部分から剥がれ易く、水が浸入してしまう虞がある。
また、シート表面の濡れ性として、接触角８０°以上であることが好ましい。
該表面樹脂層の付与方法としては、ナイフコーティング法、グラビアロールコーティング法、ロールコーティング法、フレキソコーティング法、スプレー吹き付けコーティング法等の公知方法を用いる。
The resin used for the surface resin layer of the present invention is preferably one that can impart weak water repellency and friction resistance to the surface resin layer surface. Examples of the resin include a fluorine resin, a silicone resin, and a long chain alkyl resin.
The coating amount is preferably 0.1 to 2.0 g / m 2 . If it is less than 0.1 g / m 2 , the self-back surface adhesive strength is strong, and when wound in a roll shape (rolled up), the surface resin layer and the adhesive layer on the sheet surface are blocked and the nonwoven fabric surface becomes fuzzy. There is a possibility that it may occur, or water repellency is too weak and water tends to stay on the sheet surface (a film of water is formed) during rainy weather, and the operator may slip. If it exceeds 2.0 g / m 2 or more, the self-rear surface adhesive strength becomes too weak, and it is easy to peel off from the part where the applied curing sheets are laminated and bonded together, and there is a risk that water may enter.
Further, the wettability of the sheet surface is preferably a contact angle of 80 ° or more.
As a method for applying the surface resin layer, a known method such as a knife coating method, a gravure roll coating method, a roll coating method, a flexo coating method, or a spray spray coating method is used.
本発明において、不織布層と微多孔フィルム層を貼り合せする方法として、ドライラミネート法、ウェットラミネート法、サーマルラミネート（熱融着ラミネート）法、押出ラミネート法等が挙げられるが、充分な透湿性を確保する点で、接着樹脂を使用せず、微多孔フィルム層の孔を塞ぐことが少なく、不織布層の毛羽立ちを抑えつつ、一体化させることの出来るサーマルラミネート（熱融着ラミネート）法を用いることが好ましい。 In the present invention, examples of the method for laminating the nonwoven fabric layer and the microporous film layer include a dry laminate method, a wet laminate method, a thermal laminate (heat fusion laminate) method, and an extrusion laminate method. In terms of securing, use a thermal laminating (thermal fusion laminating) method that does not use an adhesive resin, rarely clogs the pores of the microporous film layer, and can be integrated while suppressing the fluff of the nonwoven fabric layer. Is preferred.
また、本発明の養生シートの総重量（目付）は５０〜２００ｇ／ｍ２が好ましく、８０〜１００ｇ／ｍ２がより好ましい。５０ｇ／ｍ２未満だとハリ感やコシ感にかけ、施工の際にシートがおれ、粘着層同士が被着し易くなるなどして施工性が悪くなる虞がある。２００ｇ／ｍ２を超えると重くなり、運搬性や施工性に影響が出る虞がある。
また、養生シートの総厚みは８０μｍ以上であることが好ましい。８０μｍ未満であると養生シートとしての強度が維持できず、施工時に破れる虞がある。
また、養生シートとしての引張強度は縦（長さ）方向１００Ｎ／５ｃｍ以上、横（幅）方向５０Ｎ／５ｃｍ以上である。この強度未満では、施工した後で養生シートの上を歩行した際に破れが発生する虞がある。
Moreover, 50-200 g / m < 2 > is preferable and, as for the total weight (weight per unit area) of the curing sheet of this invention, 80-100 g / m < 2 > is more preferable. If it is less than 50 g / m 2 , it may give a sense of firmness or firmness, the sheet may fall during construction, and the adhesive layers may be easily adhered to each other, and the workability may deteriorate. If it exceeds 200 g / m 2 , it becomes heavier and there is a risk of affecting transportability and workability.
Moreover, it is preferable that the total thickness of a curing sheet is 80 micrometers or more. If it is less than 80 μm, the strength as a curing sheet cannot be maintained, and there is a risk of tearing during construction.
Further, the tensile strength as the curing sheet is 100 N / 5 cm or more in the longitudinal (length) direction and 50 N / 5 cm or more in the transverse (width) direction. If it is less than this strength, there is a risk of tearing when walking on the curing sheet after construction.
以下、本発明について実施例を挙げて説明するが、本発明は必ずしもその実施例に限定されるものではない。なお、実施例・比較例における各物性値は以下の方法により測定した。測定は標準環境下（温度２０〜２４℃、湿度４０〜６０％）にて行った。
（１）透湿度
ＪＩＳ L １０９９ Ａ−１法に準じて測定した。
（２）耐水圧
ＪＩＳ L １０９２ Ｂ法に準じて測定した。
（３）引張強度
ＪＩＳ L １０９６ Ａ法に準じて測定した。
（４）引裂強度
ＪＩＳ Ｌ １０９６ Ａ−１法に準じて測定した。
（５）粘着力（ＳＵＳ板、背面）
ＪＩＳ Ｚ ０２３７に準じて測定した。
（６）接触角（表面濡れ性）
ＪＩＳ Ｒ ３２５７に準じて測定した。
（７）磨耗試験
ＪＩＳ Ｌ ０８４９に準じて評価した。乾燥試験で５０回に摩擦を実施し、表面状態を確認した。
（８）滑り性試験
静摩擦係数試験機（新東科学株式会社製 トライボギア静摩擦係数測定機ＴＹＰＥ：１０）を用いて、縦７５ｍｍ横３５ｍｍにカットした中心平均表面粗さ（ＪＩＳ−Ｂ０６０１）がＲａ＝３．６μｍであるスチレン・ブタジエン・ラバー合成ゴムシートを平面圧子側に設置し、縦３００ｍｍ横１２０ｍｍにカットした養生シートを上昇板に設置し、測定開始と同時に上昇板の傾斜が進み、平面圧子が滑り始めたときのｔａｎθを読み静摩擦係数を測定した。評価は乾燥状態（合成ゴムシートと養生シートとの間に自由水が無い状態）と湿潤状態（合成ゴムシートと養生シートとの間に水を１０ｃｃ滴下させた状態）で測定した。
（９）展開性試験
巻製品状態での養生シートを、展開した際に、シート基材の材破の有無を評価した。
（１０）耐久性試験（現場想定促進評価）
針葉樹合板に養生シートを貼り合せ試験体とし、ＪＩＳ Ｂ ７７５１に準じた促進試験に基づき、６０分サイクル（４８分キセノンアーク照射、１２分キセノンアーク照射と噴霧）を５サイクル行った後、養生シートと合板との剥離の有無を確認した。また、その後標準状態で１日置き、養生シートを剥がして、シートの材破、合板への糊残り、合板表面の材破等を確認し、再剥離性の有無を評価した。
EXAMPLES Hereinafter, although an Example is given and demonstrated about this invention, this invention is not necessarily limited to the Example. In addition, each physical-property value in an Example and a comparative example was measured with the following method. The measurement was performed under a standard environment (temperature 20 to 24 ° C., humidity 40 to 60%).
(1) Moisture permeability Measured according to JIS L 1099 A-1.
(2) Water pressure resistance Measured according to JIS L 1092 B method.
(3) Tensile strength
It measured according to JIS L 1096 A method.
(4) Tear strength Measured according to JIS L 1096 A-1.
(5) Adhesive strength (SUS board, back)
It measured according to JISZ0237.
(6) Contact angle (surface wettability)
It measured according to JISR3257.
(7) Wear test It evaluated according to JIS L0849. Friction was performed 50 times in the drying test, and the surface condition was confirmed.
(8) Sliding test Using a static friction coefficient testing machine (Tribogear static friction coefficient measuring machine TYPE: 10, manufactured by Shinto Kagaku Co., Ltd.), the center average surface roughness (JIS-B0601) cut into a length of 75 mm and a width of 35 mm is Ra = A styrene / butadiene / rubber synthetic rubber sheet of 3.6 μm is installed on the flat indenter side, and a curing sheet cut into a length of 300 mm and a width of 120 mm is installed on the ascending plate. When tan θ began to slide, tan θ was read and the static friction coefficient was measured. The evaluation was carried out in a dry state (there is no free water between the synthetic rubber sheet and the curing sheet) and a wet state (a state where 10 cc of water was dropped between the synthetic rubber sheet and the curing sheet).
(9) Expandability test When the cured sheet in the rolled product state was expanded, the presence or absence of material breakage of the sheet base material was evaluated.
(10) Durability test (on-site assumption promotion evaluation)
A curing sheet is bonded to a softwood plywood, and a 60-minute cycle (48-minute xenon arc irradiation, 12-minute xenon arc irradiation and spraying) is performed for 5 cycles based on an accelerated test according to JIS B 7751. The presence or absence of peeling from the plywood was confirmed. In addition, the cured sheet was peeled off for one day in a standard state, and the material breakage of the sheet, the adhesive residue on the plywood, the material breakage of the plywood surface, etc. were confirmed, and the presence or absence of removability was evaluated.
〔実施例１〕
不織布層（ユニチカ株式会社製、鞘ポリエチレン芯ポリエステル不織布 エルベスＩＩＴ０５０３ＷＥＯ 目付５０ｇ／ｍ２）と、微多孔フィルム層（大和川ポリマー株式会社製、ポリエチレンフィルム ＹＰ４０００ 厚み３０μｍ）をサーマルラミネート法によって貼り合せた。さらに不織布層の表面に表面樹脂層（一方油脂工業株式会社製、長鎖アルキル系樹脂 ピーロイル１０５０）を、グラビアコーターにて０．５ｇ／ｍ２塗工し、微多孔フィルム層の裏面に粘着樹脂層（サイデン化学株式会社製、アクリル系樹脂 ＡＴＲ−１）をロールコーターにて１８ｇ／ｍ２塗工して、厚さ１７１μｍ、目付９８ｇ／ｍ２の養生シートを得た。評価結果を表１に示す。
[Example 1]
A nonwoven fabric layer (manufactured by Unitika Ltd., sheathed polyethylene core polyester nonwoven fabric Elves IIT0503WEO per unit weight 50 g / m 2 ) and a microporous film layer (manufactured by Yamatogawa Polymer Co., Ltd., polyethylene film YP4000 thickness 30 μm) were bonded together by a thermal lamination method. Furthermore, a surface resin layer (manufactured by Oil and Fat Industries, Ltd., long-chain alkyl resin Pyroyl 1050) is applied to the surface of the nonwoven fabric layer with a gravure coater at 0.5 g / m 2 , and an adhesive resin is applied to the back of the microporous film layer. A layer (Syden Chemical Co., Ltd., acrylic resin ATR-1) was coated with a roll coater at 18 g / m 2 to obtain a curing sheet having a thickness of 171 μm and a basis weight of 98 g / m 2 . The evaluation results are shown in Table 1.
〔実施例２〕
粘着樹脂層は吸水膨潤樹脂を添加剤として分散させた粘着樹脂（ビッグテクノス株式会社製、アクリル系主剤ＡＲ−２４１２を１００部に吸水膨潤樹脂リキダインＡＲ７３９Ｍを４０部、架橋剤サンパスターＨＤ−７３９Ｄを１部添加）により形成した以外は、実施例１と同様に加工し、厚さ１７１μｍ、目付９８ｇ／ｍ２の養生シートを得た。評価結果を表１に示す。
[Example 2]
The pressure-sensitive adhesive resin layer is a pressure-sensitive resin in which a water-swelling resin is dispersed as an additive (Big Technos Co., Ltd., 100 parts of an acrylic main agent AR-2412, 40 parts of a water-swelling resin liquidine AR739M, and a crosslinking agent Sun Paster HD-739D. Except that it was formed by adding 1 part), it was processed in the same manner as in Example 1 to obtain a curing sheet having a thickness of 171 μm and a basis weight of 98 g / m 2 . The evaluation results are shown in Table 1.
〔実施例３〕
粘着樹脂層を、塗工面積が８０％になるよう粘着樹脂を直径２ｍｍの非塗工部からなるドットを上下左右に３ｍｍ間隔にて形成するようコーターで塗工した以外は、実施例１と同様に加工し、厚さ１７１μｍ、目付９４ｇ／ｍ２の養生シートを得た。評価結果を表１に示す。
Example 3
Example 1 except that the adhesive resin layer was coated with a coater so that dots comprising non-coated portions with a diameter of 2 mm were formed at intervals of 3 mm vertically and horizontally so that the coating area was 80%. The same processing was performed to obtain a curing sheet having a thickness of 171 μm and a basis weight of 94 g / m 2 . The evaluation results are shown in Table 1.
〔実施例４〕
粘着樹脂層を、ウレタン系樹脂（一方油脂株式会社製、バインゾールＵ−２５０）に変えた以外は、実施例１と同様に加工し、厚さ１７１μｍ、目付９８ｇ／ｍ２の養生シートを得た。評価結果を表１に示す。
Example 4
The adhesive resin layer was processed in the same manner as in Example 1 except that it was changed to a urethane-based resin (Vainsol U-250, manufactured by Yushi Co., Ltd.) to obtain a curing sheet having a thickness of 171 μm and a basis weight of 98 g / m 2 . . The evaluation results are shown in Table 1.
〔実施例５〕
表面樹脂層を、シリコ−ン系樹脂（信越化学工業株式会社製、ＫＳ-７２５）に変えた以外は、実施例１と同様に加工し、厚さ１７１μｍ、目付９８ｇ／ｍ２の養生シートを得た。評価結果を表１に示す。
Example 5
The surface resin layer was processed in the same manner as in Example 1 except that it was changed to a silicone-based resin (manufactured by Shin-Etsu Chemical Co., Ltd., KS-725), and a curing sheet having a thickness of 171 μm and a basis weight of 98 g / m 2 was obtained. Obtained. The evaluation results are shown in Table 1.
〔比較例１〕
不織布層を、ポリエチレン不織布（出光ユニテック株式会社製、ストラテックＬＮ２０５０目付、５０ｇ／ｍ２）に変えた以外は、実施例１と同様に加工し、厚さ１８４μｍ、目付９８ｇ／ｍ２の養生シートを得た。評価結果を表１に示す。
[Comparative Example 1]
Except for changing the nonwoven fabric layer to a polyethylene nonwoven fabric (manufactured by Idemitsu Unitech Co., Ltd., Stratec LN2050 basis weight, 50 g / m 2 ), it is processed in the same manner as in Example 1 and has a thickness of 184 μm and a basis weight of 98 g / m 2 . Got. The evaluation results are shown in Table 1.
〔比較例２〕
不織布層を、ポリエステル不織布（ユニチカ株式会社製、マリックス２０５０７ＷＴＤ、目付５０ｇ／ｍ２）に変えた以外は、実施例１と同様に加工し、厚さ１７６μｍ、目付９８ｇ／ｍ２の養生シートを得た。評価結果を表１に示す。
[Comparative Example 2]
The nonwoven fabric layer was processed in the same manner as in Example 1 except that the nonwoven fabric layer was changed to a polyester nonwoven fabric (manufactured by Unitika Ltd., Marix 20507WTD, basis weight 50 g / m 2 ) to obtain a cured sheet having a thickness of 176 μm and a basis weight of 98 g / m 2. It was. The evaluation results are shown in Table 1.
〔比較例３〕
微多孔フィルム層を、ポリエチレンフィルム（大和川ポリマー株式会社製、ＹＰ４５００、厚み３０μｍ 透湿度１２９０ｇ／ｍ２・２４ｈ）に変えた以外は、実施例１と同様に加工し、厚さ１７１μｍ、目付９８ｇ／ｍ２の養生シートを得た。評価結果を表１に示す。
[Comparative Example 3]
The microporous film layer was processed in the same manner as in Example 1 except that it was changed to a polyethylene film (manufactured by Yamatogawa Polymer Co., Ltd., YP4500, thickness 30 μm, moisture permeability 1290 g / m 2 · 24 h), thickness 171 μm, basis weight 98 g A curing sheet of / m 2 was obtained. The evaluation results are shown in Table 1.
〔比較例４〕
不織布層を、鞘ポリエチレン芯ポリエステル不織布（ユニチカ株式会社製、エルベスＩＴＯ５０３ＷＤＯ、目付５０ｇ／ｍ２、融点１２７℃）に、微多孔フィルム層を、ポリエチレンフィルム（大和川ポリマー株式会社製、ＹＰ４５０１、厚み３０μｍ、融点１２６℃）に変えた以外は、実施例１と同様に加工し、厚さ１７１μｍ、目付９８ｇ／ｍ２の養生シートを得た。評価結果を表１に示す。
[Comparative Example 4]
The nonwoven fabric layer is a sheath polyethylene core polyester nonwoven fabric (manufactured by Unitika Ltd., Elves ITO503WDO, basis weight 50 g / m 2 , melting point 127 ° C.), the microporous film layer is a polyethylene film (Yamatogawa Polymer Ltd., YP4501, thickness 30 μm). Except for changing to a melting point of 126 ° C., processing was performed in the same manner as in Example 1 to obtain a curing sheet having a thickness of 171 μm and a basis weight of 98 g / m 2 . The evaluation results are shown in Table 1.
〔比較例５〕
粘着樹脂層の塗工量を３ｇ／ｍ２に変えた以外は、実施例１と同様に加工し、厚さ１６７μｍ、目付８３ｇ／ｍ２の養生シートを得た。評価結果を表１に示す。
[Comparative Example 5]
A curing sheet having a thickness of 167 μm and a basis weight of 83 g / m 2 was obtained in the same manner as in Example 1 except that the coating amount of the adhesive resin layer was changed to 3 g / m 2 . The evaluation results are shown in Table 1.
〔比較例６〕
不織布層の表面に、表面樹脂層を形成しなかった以外は、実施例１と同様に加工し、厚さ１７１μｍ、目付９８ｇ／ｍ２の養生シートを得た。評価結果を表１に示す。
[Comparative Example 6]
A cured sheet having a thickness of 171 μm and a basis weight of 98 g / m 2 was obtained in the same manner as in Example 1 except that the surface resin layer was not formed on the surface of the nonwoven fabric layer. The evaluation results are shown in Table 1.
〔比較例７〕
不織布層と微多孔フィルム層を、全面に接着剤（大日精化社製、主剤セイカボンドＥ−２７８に架橋剤Ｃ−７６を５部添加）を用いてドライラミネート法で貼り合せた以外は、実施例１と同様に加工し、厚さ１７２μｍ、目付９９ｇ／ｍ２の養生シートを得た。評価結果を表１に示す。
[Comparative Example 7]
Except that the nonwoven fabric layer and the microporous film layer were bonded to the entire surface by a dry laminating method using an adhesive (manufactured by Dainichi Seika Co., Ltd., 5 parts of the crosslinking agent C-76 added to the main component Seika Bond E-278). Processing was conducted in the same manner as in Example 1 to obtain a curing sheet having a thickness of 172 μm and a basis weight of 99 g / m 2 . The evaluation results are shown in Table 1.
〔比較例８〕 無透湿シート
透湿性の無いポリエチレンフィルムの裏面に粘着剤（サイデン化学株式会社製、アクリル粘着樹脂、ＡＴＲ−１）を全面に塗工した養生シート（セーレン株式会社製、ヌレインダイレクト）の評価結果を表１に示す。
[Comparative Example 8] Moisture-impermeable sheet Curing sheet (manufactured by Seiren Co., Ltd., coated with an adhesive (Syden Chemical Co., Ltd., acrylic adhesive resin, ATR-1) on the back of a polyethylene film having no moisture permeability. The evaluation results of (Rain Direct) are shown in Table 1.
１ 透湿性養生シート
２ 表面樹脂層
３ 不織布層
４ 微多孔フィルム層
５ 粘着樹脂層
DESCRIPTION OF SYMBOLS 1 Moisture permeable curing sheet 2 Surface resin layer 3 Nonwoven fabric layer 4 Microporous film layer 5 Adhesive resin layer
Claims (9)
The moisture-permeable curing sheet according to any one of claims 1 to 8, wherein the adhesive layer contains an adhesive resin of any of polyolefin, polyacrylic, polyurethane, polyester, silicone, natural / synthetic rubber.
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| JP6849309B2 (en) * | 2016-01-20 | 2021-03-24 | 積水化学工業株式会社 | Base material for repair of concrete structures |
| JP7026445B2 (en) * | 2017-03-29 | 2022-02-28 | セーレン株式会社 | Field curing sheet |
| CN107287768A (en) * | 2017-07-26 | 2017-10-24 | 唐新雄 | Super dry and comfortable hot-wind nonwoven cloth fabric |
| JP2020033900A (en) * | 2018-08-28 | 2020-03-05 | イビデン株式会社 | Method for manufacturing mat material |
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