JPH07290576A - Bonding of self-repairing water barrier sheet - Google Patents
Bonding of self-repairing water barrier sheetInfo
- Publication number
- JPH07290576A JPH07290576A JP11362294A JP11362294A JPH07290576A JP H07290576 A JPH07290576 A JP H07290576A JP 11362294 A JP11362294 A JP 11362294A JP 11362294 A JP11362294 A JP 11362294A JP H07290576 A JPH07290576 A JP H07290576A
- Authority
- JP
- Japan
- Prior art keywords
- water
- sheet
- self
- adhesive tape
- sheets
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
Landscapes
- Revetment (AREA)
- Processing Of Solid Wastes (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、廃棄物処理場、人工
貯水池、河川の堤防、鉄筋コンクリート建築物の屋上、
地下鉄の駅舎および地下埋設物等に漏水防止のために敷
設される土木建築用の遮水シートであって、施工時また
は使用中に鋭角物との接触により生じた穴の拡大を防止
し、かつこの穴を自動的に塞ぐことができる自己修復性
を備えた遮水シートの接合方法に関するものである。This invention relates to a waste treatment plant, an artificial reservoir, a river embankment, a roof of a reinforced concrete building,
A water barrier sheet for civil engineering construction that is laid to prevent water leakage in subway station buildings and underground buried objects, etc., and prevents the expansion of holes caused by contact with sharp objects during construction or during use, and The present invention relates to a method for joining a water-blocking sheet having self-repairing properties that can automatically close the holes.
【０００２】[0002]
【従来の技術】上記の廃棄物処理場や鉄筋コンクリート
建築物の屋上等に漏水防止のために敷設される土木建築
用遮水シートとして、塩化ビニル系、ポリエチレン系、
合成ゴム系等の合成高分子材料からなるシートが多く採
用されている。これらの合成高分子材料からなる遮水シ
ートは、金属系遮水シートに比して敷設面の凹凸にフィ
ットし易く、かつ外力による破損を軽減することができ
る反面、敷設面の岩石や砕石等の鋭角状物に接した場合
に裂傷を生じ易かった。2. Description of the Related Art As a water-blocking sheet for civil engineering construction laid on the roof of a waste treatment plant or a reinforced concrete building to prevent water leakage, vinyl chloride type, polyethylene type,
Sheets made of synthetic polymer materials such as synthetic rubber are often used. Water-impermeable sheets made of these synthetic polymer materials can fit irregularities on the laying surface more easily than metal-based water-impermeable sheets and can reduce damage due to external forces, but rocks or crushed stones on the laying surface, etc. When it came into contact with an acute-angled object, it was easy to cause laceration.
【０００３】この裂傷を防ぐため、上記の合成高分子材
料シートを織物、編物、不織布等の繊維シートで補強し
た複合シートも開発されているが、この場合も敷設面の
鋭角部または釘、ガラス、刃物等の鋭利物品に接する
と、その接触部に応力が集中して穴が開けられ、この穴
から廃棄物中の汚染物質が水と共に流れ出し、地下水や
河川を汚染する原因となり、周辺環境に大きな悪影響を
与えるという問題があった。In order to prevent this laceration, a composite sheet in which the above-mentioned synthetic polymer material sheet is reinforced with a fiber sheet such as woven fabric, knitted fabric or non-woven fabric has been developed. In this case as well, an acute angle portion of the laying surface or a nail, glass When it comes into contact with sharp objects such as blades, stress is concentrated in the contact area and holes are drilled, which causes pollutants in waste to flow out with water and pollute groundwater and rivers, which may affect the surrounding environment. There was a problem that it had a great adverse effect.
【０００４】これらの問題を解決するため、水との接触
により膨張する性質を備えた水膨張性ゴムまたは水膨張
性樹脂からなる水膨張性シートの表裏両面に通常のゴム
または樹脂からなる遮水性の外面シートを積層し、かつ
水膨張性シート内または該水膨張性シートと外面シート
との界面その他の任意箇所に補強層として繊維シートを
介在させて得られた自己修復性遮水シートを所望の箇所
に敷設し、この遮水シートが破損されない通常の条件下
では、外面シートで水膨張性シートを保護して遮水の目
的を達成し、この遮水シートに穴が発生した場合は、穴
から侵入する水に水膨張性シートが接することにより、
水膨張性シートを膨張させて穴を塞ぎ、水の侵入を防止
することが試みられるようになった。In order to solve these problems, a water-impervious sheet made of a normal rubber or resin is used on both front and back surfaces of a water-expandable sheet made of a water-expandable rubber or a resin having a property of expanding when contacted with water. Desirable is a self-repairing water-impervious sheet obtained by laminating an outer sheet of No. 1 and by interposing a fiber sheet as a reinforcing layer in the water-swellable sheet or at an interface between the water-swellable sheet and the outer sheet or at any other place. Under normal conditions where the water-impermeable sheet is not damaged, protect the water-swellable sheet with the outer sheet to achieve the purpose of water-impervious sheet, and if a hole occurs in this water-impermeable sheet, By contacting the water swelling sheet with the water entering through the hole,
Attempts have been made to expand the water-swellable sheet to close the holes and prevent the ingress of water.
【０００５】一方、これらの遮水シートは、厚み１．５
〜５．０mm、幅１〜２ｍ、長さ５〜２０ｍ程度に成形さ
れ、その複数枚を側縁部で重ね、接着により接合して方
形のシートとし、これをロール状に巻いて施工現場に運
び、更に縦横に接合して必要な面積に形成されるが、そ
の接合方法として、遮水シートの重ね合わせ部分に自然
加硫タイプのゴム、例えばＥＰＴ、ＩＩＲまたはＥＰＴ
とＩＩＲとのブレンドゴムからなる粘着性テープ（タッ
クテープ、バッチゴム等と呼ばれている）を介在させ、
この粘着性テープを加圧加熱することなく自然加硫させ
ることによって接着し、この接合部分に遮水性を付与す
ることが知られている（特開昭５６−８４９４０号公報
参照）。On the other hand, these waterproof sheets have a thickness of 1.5.
~ 5.0 mm, width 1 ~ 2 m, length 5 ~ 20 m, and stacking multiple sheets at the side edges and adhering them together to form a rectangular sheet, which is rolled into a roll and used at the construction site. It is carried and then joined vertically and horizontally to form a required area. As a joining method, a natural vulcanization type rubber such as EPT, IIR or EPT is used for the overlapping portion of the water-blocking sheet.
With an adhesive tape (called tack tape, batch rubber, etc.) made of a blended rubber of
It is known that the pressure-sensitive adhesive tape is adhered by natural vulcanization without heating under pressure to impart water-blocking properties to the joint (see Japanese Patent Laid-Open No. 56-84940).
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、従来の
接合方法は、幅数十ミリメートルの接合面全域に粘着性
テープを挟んだ後、ローラ等で加圧するのみであったた
め、太陽熱のみで自然加硫しようとすると、加硫に長時
間を要し、そのため加硫が完了するまでの間に接合部が
剥離するという問題があり、これを避けるためには高温
で加熱し、短時間で加硫を完結させる必要があった。However, according to the conventional joining method, since the adhesive tape is sandwiched over the entire joining surface having a width of several tens of millimeters and then only pressure is applied by a roller or the like, natural vulcanization is performed only by solar heat. If you try to do so, it takes a long time to vulcanize, so there is a problem that the joint part peels off before the vulcanization is completed.To avoid this, heat at high temperature and vulcanize in a short time. It had to be completed.
【０００７】この発明は、自己修復性遮水シートを上記
の粘着性テープで接合する方法を改良し、その自然加硫
が完了するまでの間および自然加硫の完了後においても
粘着性テープの接合力を補強し、接合部の剥離が生じな
いようにしたものである。The present invention has improved the method for joining self-repairing water-impervious sheets with the above-mentioned adhesive tape, and the self-healing water-blocking sheet is adhered to the adhesive tape until and after the natural vulcanization is completed. The joining force is reinforced so that peeling of the joint does not occur.
【０００８】[0008]
【課題を解決するための手段】この発明は、自己修復性
を有し、かつ繊維シートで補強された２枚の遮水シート
の端部または側縁を重ねて接合する際、上記２枚の遮水
シートの端部または側縁間に自然加硫タイプのゴムから
なる粘着性テープを挟んで加圧し、次いでこの粘着性テ
ープの挟まれた部分を表面平滑な縫い糸で縫合すること
を特徴とする自己修復性遮水シートの接合方法である。According to the present invention, when two end portions or side edges of two water-impervious sheets having self-healing property and reinforced with a fiber sheet are overlapped and joined, It is characterized in that an adhesive tape made of natural vulcanization type rubber is sandwiched between the end portions or side edges of the water-impervious sheet and pressed, and then the sandwiched portion of the adhesive tape is sewn with a sewing thread having a smooth surface. It is a method of joining self-repairing water-blocking sheets.
【０００９】上記の自己修復性遮水シートは、通常のゴ
ムまたは合成樹脂からなる表裏の遮水性外面シート間に
水膨潤性の中間シートを挟み、かつ中間シート内または
中間シートと外面シートの界面等の任意箇所に織物、編
物または不織布等の繊維シートを介在させて補強したも
のである。外面シートとしては、天然ゴム、ＩＲ、ＳＢ
Ｒ、ＢＲ、ＥＰＭ、ＥＰＤＭ、ＩＩＲなどの合成ゴム、
またはＰＶＣ、高密度ポリエチレン、低密度ポリエチレ
ン、架橋ポリエチレン、塩素化ポリエチレン、ＥＶＡ等
のオレフィン系樹脂で作ることができ、その厚みは０．
５〜１．０mmが好ましい。The self-healing water-impervious sheet has a water-swellable intermediate sheet sandwiched between water-impervious outer sheets on the front and back made of ordinary rubber or synthetic resin, and the inside of the intermediate sheet or the interface between the intermediate sheet and the outer sheet. A fiber sheet such as a woven fabric, a knitted fabric or a non-woven fabric is reinforced at an arbitrary position such as the above. As the outer sheet, natural rubber, IR, SB
R, BR, EPM, EPDM, IIR and other synthetic rubber,
Alternatively, it can be made of olefin resin such as PVC, high density polyethylene, low density polyethylene, crosslinked polyethylene, chlorinated polyethylene, EVA, etc., and its thickness is 0.
5 to 1.0 mm is preferable.
【００１０】また、上記の中間シートは、天然ゴム、Ｉ
Ｒ、ＳＢＲ、ＢＲ、ＥＰＭ、ＥＰＤＭ、ＩＩＲなどの合
成ゴム、またはＰＶＣ、高密度ポリエチレン、低密度ポ
リエチレン、架橋ポリエチレン、塩素化ポリエチレン、
ＥＶＡ等のオレフィン系樹脂に各種の水吸収材を混合し
て作られる。水吸収材としては、パルプ、セルロース等
の天然材料、またはポリアクリル酸塩系、デンプン・ア
クリル酸塩系、酢ビ・アクリル酸共重合体、ポリエチレ
ンオキサイド系、イソブチレン・無水マレイン酸共重合
体、ＰＶＡ・無水マレイン酸共重合体、アクリル酸塩・
アクリルアミド共重合体、ＣＭＣ系等の高吸水性ポリマ
ー類が例示され、それぞれ単独で、または２種以上を混
合して使用することができる。なお、この中間シート
は、発泡体であってもよく、この場合は遮水シートが軽
くなる。The intermediate sheet is made of natural rubber, I
Synthetic rubber such as R, SBR, BR, EPM, EPDM, IIR, or PVC, high density polyethylene, low density polyethylene, crosslinked polyethylene, chlorinated polyethylene,
It is made by mixing various water absorbing materials with olefin resin such as EVA. As the water absorbing material, pulp, natural materials such as cellulose, or polyacrylate type, starch / acrylate type, vinyl acetate / acrylic acid copolymer, polyethylene oxide type, isobutylene / maleic anhydride copolymer, PVA / maleic anhydride copolymer, acrylate /
Examples of the super absorbent polymer such as acrylamide copolymer and CMC type can be used alone or in admixture of two or more. The intermediate sheet may be a foam, and in this case, the waterproof sheet becomes lighter.
【００１１】また、上記の中間シートは、上記のゴムに
上記の高吸水性ポリマーと共に水溶性ポリマーまたは水
架橋剤を混合したものでもよい。水溶性ポリマーは、親
水性およびゴムに対する相溶性が高いものであり、ゼラ
チン、アラビアゴム等の天然高分子材料、非架橋もしく
は低架橋度であってグラフト化していないＣＭＣ、メチ
ルセルロース等の半合成高分子材料、ＰＶＡ、ポリエチ
レンオキサイド等の合成高分子材料が例示され、この水
溶性ポリマーを併用した場合は、遮水シートに穴が開い
て水が侵入した際、吸水材の水吸収が促進されて膨張が
進み、止水が短時間で完結する。また、水架橋剤は、硫
黄等の熱加硫剤に代えて添加され、水との接触によりゴ
ムの加硫を進行させるものであり、ビニル系シラン、メ
タクリロキシ系シラン、エポキシ系シラン、アミノ系シ
ラン、メルカプト系シランおよびクロロピル系シラン等
のシランカップリング剤が例示され、この水架橋剤を併
用した場合は、穴から侵入する水に中間シートが接して
膨張するに伴って架橋が進み、短時間で止水が完了する
と共に、止水効果が持続する。The intermediate sheet may be made by mixing the rubber with a water-soluble polymer or a water-crosslinking agent together with the superabsorbent polymer. The water-soluble polymer has a high hydrophilicity and a high compatibility with rubber, and is a natural polymer material such as gelatin and gum arabic, a semi-synthetic polymer such as CMC having no cross-linking or low cross-linking and not grafted, and methyl cellulose. Molecular materials, synthetic high molecular weight materials such as PVA and polyethylene oxide are exemplified, and when this water-soluble polymer is used in combination, water absorption of the water absorbing material is promoted when holes penetrate the water-blocking sheet and water invades. Expansion progresses, and water stopping is completed in a short time. Further, the water-crosslinking agent is added in place of the thermal vulcanizing agent such as sulfur and accelerates the vulcanization of the rubber by contact with water. Vinyl-based silanes, methacryloxy-based silanes, epoxy-based silanes, amino-based silanes. Examples of silane coupling agents such as silane, mercapto-based silane, and chloropyr-based silane. When this water-crosslinking agent is used in combination, crosslinking progresses as the intermediate sheet comes into contact with water entering through the holes and expands, resulting in a short The water stopping effect will continue as the water stopping is completed in time.
【００１２】また、上記の中間シートとして、水架橋性
を備えた粘弾性シートを使用することができる。この粘
弾性シートは、水架橋性および粘弾性を有し、水架橋に
よってエラストマーとなるゴムや熱可塑性樹脂等のポリ
マーであり、例えば未架橋のハロゲン化ＩＩＲ、ハロゲ
ン化ＥＰＤＭ、ハロゲン化ＰＥ、ＣＳＭ等のハロゲン系
ポリマーに、メルカプト系、ビニル系等の遅効性シラン
カップリング剤および有機スズ化合物（例えば、ジラウ
リン酸ジ−ｎ−ブチルスズ）、並びにカーボンブラッ
ク、プロセスオイルその他の添加剤を配合することによ
って製造される。そして、この粘弾性シートを使用した
場合は、遮水シートに穴が開いた際に粘弾性シートの粘
弾性によって上記の穴が瞬間的に塞がれ、しかも穴から
浸入する水に粘弾性シートが接することにより、粘弾性
シートの架橋が進み、引張強度が増大し、穴の拡大が防
止され、止水効果が持続する。A viscoelastic sheet having a water-crosslinking property can be used as the intermediate sheet. This viscoelastic sheet is a polymer such as rubber or thermoplastic resin that has water-crosslinking property and viscoelasticity and becomes an elastomer by water-crosslinking. For example, uncrosslinked halogenated IIR, halogenated EPDM, halogenated PE, CSM. Blending a halogen-based polymer such as mercapto-based or vinyl-based slow-acting silane coupling agent and an organotin compound (for example, di-n-butyltin dilaurate), carbon black, process oil and other additives. Manufactured by. When this viscoelastic sheet is used, the above holes are momentarily blocked by the viscoelasticity of the viscoelastic sheet when a hole is opened in the water-impervious sheet, and the viscoelastic sheet is exposed to water entering through the hole. By contacting with each other, crosslinking of the viscoelastic sheet is promoted, tensile strength is increased, expansion of holes is prevented, and a water blocking effect is maintained.
【００１３】この発明では、上記の中間シートが表裏の
外面シート間に積層され、かつ繊維シートで補強された
自己修復性の２枚の遮水シートを接合する際、上記２枚
の遮水シートの端部または側縁間に自然加硫タイプのゴ
ムからなる粘着性テープを挟んで加圧し、次いでこの粘
着性テープが挟まれた部分を表面平滑な縫い糸で縫合す
るが、上記２枚の遮水シートの縁部を重ねるには、図１
に示すように一方の遮水シート１０Ａを他方の遮水シー
ト１０Ｂに単に重ねてもよく、また図２に示すように一
方の遮水シート１０Ａおよび他方の遮水シート１０Ｂの
裏面同士を重ねてもよく、また図３に示すように一方の
遮水シート１０Ａの縁部を他方の遮水シート１０Ｂで包
むように重ねてもよい。なお、図１ないし図３におい
て、１１は外面シート、１２は中間シート、１３は繊維
シートであり、この例では、繊維シート１３の両面に中
間シート１２および外面シート１１が積層されている。According to the present invention, when the above-mentioned intermediate sheet is laminated between the front and back outer sheets and the two self-healing waterproof sheets which are reinforced with the fiber sheet are joined, the two waterproof sheets An adhesive tape made of natural vulcanization type rubber is sandwiched between the end portions or side edges of the sheet to apply pressure, and then the area sandwiched by the adhesive tape is sewn with a suture having a smooth surface. To stack the edges of the water sheets,
As shown in FIG. 1, one of the water-impervious sheets 10A may be simply stacked on the other water-impermeable sheet 10B, or as shown in FIG. 2, the back surfaces of the one water-impermeable sheet 10A and the other water-impermeable sheet 10B may be overlapped. Alternatively, as shown in FIG. 3, one water-impervious sheet 10A may be overlapped so as to wrap the edge portion of the other water-impermeable sheet 10B. 1 to 3, 11 is an outer sheet, 12 is an intermediate sheet, and 13 is a fiber sheet. In this example, the intermediate sheet 12 and the outer sheet 11 are laminated on both sides of the fiber sheet 13.
【００１４】上記の遮水シート１０Ａ、１０Ｂの接合部
に挟まれる粘着性テープ１４は、ＥＰＤＭ、ＩＩＲ、ハ
ロゲン化ＥＰＤＭ、ハロゲン化ＩＩＲ等のゴムに加硫
剤、加硫促進剤、補強剤、充填剤、可塑剤、粘着剤等を
配合して得られる自然加硫タイプのゴムを成形して作ら
れるが、加硫促進剤としては、特にチウラム類、ジチオ
酸塩類、キサンテート類等の超促進剤の使用が好まし
い。そして、この粘着性テープ１４の厚みは０．３〜
１．０mmが、また幅は３０〜１００mmがそれぞれ好まし
い。また、この発明の遮水シート１０Ａ、１０Ｂは、繊
維シート１３で補強され、その断面が遮水シート１０
Ａ、１０Ｂの縁に露出するので、遮水シート１０Ａ、１
０Ｂの四周にＩＩＲ、ＥＰＤＭ、ハロゲン化ＩＩＲ、ハ
ロゲン化ＥＰＤＭ、ＣＳＭ、ＣＲ、ウレタン、シリコー
ンゴムおよびポリオレフィン系熱可塑性樹脂等からなる
防水性シーリング剤を塗布して防水性塗膜１５を形成す
ることが好ましい。The pressure-sensitive adhesive tape 14 sandwiched between the joints of the water-blocking sheets 10A and 10B is made of rubber such as EPDM, IIR, halogenated EPDM, halogenated IIR, etc., with a vulcanizing agent, a vulcanization accelerator, a reinforcing agent, It is made by molding a natural vulcanization type rubber obtained by blending fillers, plasticizers, adhesives, etc. As a vulcanization accelerator, especially thiurams, dithioates, xanthates, etc. are super accelerated. The use of agents is preferred. The thickness of the adhesive tape 14 is 0.3-
1.0 mm and the width is preferably 30 to 100 mm. Further, the water-impervious sheets 10A and 10B of the present invention are reinforced by the fiber sheet 13, and the cross section thereof is the water-impervious sheet 10.
Since it is exposed to the edges of A and 10B, the water-impervious sheets 10A and 1
Forming the waterproof coating film 15 by applying a waterproof sealing agent composed of IIR, EPDM, halogenated IIR, halogenated EPDM, CSM, CR, urethane, silicone rubber, polyolefin thermoplastic resin, etc. to the four circles of 0B. Is preferred.
【００１５】上記の遮水シート１０Ａ、１０Ｂは、その
端部または側縁部が上記のように重ねられ、その間に粘
着性テープ１４を挟んで加圧された後、縫い糸１６で縫
合される。この縫い糸１６は、表面平滑な糸であり、ナ
イロン、ビニロン、ポリエステル等の合成繊維からなる
モノフィラメント糸、マルチフィラメント糸が好まし
い。また、綿糸等の紡績糸および合成繊維のマルチフィ
ラメント糸に防水処理を施して表面を平滑に形成し、か
つ内部の隙間を埋めたものでもよい。この縫い糸１６の
太さは、２００〜２０００デニールが、また縫目の本数
は、１〜５本、特に３〜５本がそれぞれ好ましい。The water-impermeable sheets 10A and 10B are overlapped at their ends or side edges as described above, and the adhesive tape 14 is sandwiched between them to be pressed and then sewn with a sewing thread 16. The sewing thread 16 is a thread having a smooth surface, and is preferably a monofilament thread or a multifilament thread made of synthetic fibers such as nylon, vinylon and polyester. In addition, spun yarn such as cotton yarn and multifilament yarn of synthetic fiber may be waterproofed to form a smooth surface and fill the internal gap. The thickness of the sewing thread 16 is preferably 200 to 2000 denier, and the number of stitches is preferably 1 to 5, particularly 3 to 5.
【００１６】[0016]
【作用】２枚の遮水シート間に自然加硫タイプの粘着性
テープを挟んで加圧すると、２枚の遮水シートが仮接着
され、次の縫合が容易になり、この縫合によって、２枚
の遮水シートの重合面が縫い糸の締付けで圧着状態に保
たれて自然加硫が進行し、この重合部に外力が作用して
も重合部がずれたり、剥離したりすることがない。そし
て、自然加硫が完結すると、接合部が完全に接着され、
接合面からの漏水が完全に防止される。一方、遮水シー
トが繊維シートで補強されているため、縫い糸の締付け
で遮水シートの裂けることが防止される。また、表面平
滑な縫い糸を使用するので、縫目に水の侵入することが
なく、仮に水が侵入した場合は、遮水シートの自己修復
性によって水の侵入が阻止される。When the natural vulcanization type adhesive tape is sandwiched between the two water-impervious sheets and pressed, the two water-impervious sheets are temporarily bonded and the next stitch is facilitated. The superposed surface of the water-impervious sheet is kept in a crimped state by tightening the sewing thread, and natural vulcanization proceeds, so that even if an external force is applied to the superposed portion, the superposed portion is not displaced or peeled off. Then, when the natural vulcanization is completed, the joint is completely bonded,
Water leakage from the joint surface is completely prevented. On the other hand, since the water impervious sheet is reinforced with the fiber sheet, it is possible to prevent the water impervious sheet from tearing by tightening the sewing thread. Further, since the suture thread having a smooth surface is used, water does not enter the seam, and if the water enters, the self-healing property of the water blocking sheet prevents the water from entering.
【００１７】[0017]
【実施例】図２に示すように、繊維シート１３の上下両
面に水膨張性の中間シート１２および遮水性の外面シー
ト１１が順に積層された自己修復性遮水シート１０Ａ、
１０Ｂを製造した。表裏の外面シート１１は、ＥＰＤＭ
によって厚み０．５mm、幅１ｍのシート状に成形し、長
さ８ｍに切断した。また、水膨張性の中間シート１２
は、下記の配合物をバンバリーミキサーで混練りし、空
冷した後、シート押出機を用いて厚み０．５mm、幅１ｍ
のシート状に成形し、これを繊維シート１３の上下両面
に重ねてサンドイッチ状に形成し、長さ８ｍに切断し
た。ただし、繊維シート１３は、ナイロンの捲縮加工糸
（１４０デニール）からなる天竺組織の丸編地（目付量
２７０ｇ／ｍ2 ）を使用した。そして、上記未加硫の外
面シート１１、未加硫の中間シート１２および繊維シー
ト１３を重ね、１０kg／cm2 の面圧を加えて１８０℃、
１５分間の加硫を行って積層した。EXAMPLE As shown in FIG. 2, a self-repairing water-impervious sheet 10A in which a water-swellable intermediate sheet 12 and a water-impervious outer sheet 11 are sequentially laminated on the upper and lower surfaces of a fiber sheet 13.
10B was manufactured. The front and back outer sheets 11 are EPDM
Was formed into a sheet having a thickness of 0.5 mm and a width of 1 m and cut into a length of 8 m. In addition, the water-swellable intermediate sheet 12
Is a mixture of the following compounds mixed in a Banbury mixer, air-cooled, and then a sheet extruder is used to obtain a thickness of 0.5 mm and a width of 1 m.
Was formed into a sheet shape, and this was laminated on the upper and lower surfaces of the fiber sheet 13 to form a sandwich shape and cut into a length of 8 m. However, as the fiber sheet 13, a circular knitted fabric (weight per unit area: 270 g / m 2 ) made of nylon crimped yarn (140 denier) and having a plain cloth structure was used. Then, the unvulcanized outer sheet 11, the unvulcanized intermediate sheet 12 and the fibrous sheet 13 are stacked, and a surface pressure of 10 kg / cm 2 is applied to the temperature of 180 ° C.
It was vulcanized for 15 minutes and laminated.
【００１８】 表 １ ＥＰＤＭ（三井石油社製、品番「３０４５」） １００部 亜鉛華 ５部 ステアリン酸 １部 クマロン樹脂 ３部 ＳＲＦブラック ５０部 クレー １５部 プロセスオイル ２０部 イオウ ２部 促進剤ＴＴ １．５部 促進剤ＰＺ １．５部 促進剤Ｍ １．０部 高吸水性樹脂 １００部 ただし、表１中のＴＴはテトラチウラム・ジスルフィ
ド、ＰＺはジメチルジチオカルバミン酸亜鉛、Ｍは２−
メルカプトベンゾチアゾール、高吸水性樹脂は株式会社
クラレ製、商品名「ＫＩゲル２０１Ｋ−Ｆ２」である。Table 1 EPDM (manufactured by Mitsui Oil Co., Inc., product number “3045”) 100 parts Zinc white 5 parts Stearic acid 1 part Coumaron resin 3 parts SRF black 50 parts Clay 15 parts Process oil 20 parts Sulfur 2 parts Accelerator TT 1. 5 parts Accelerator PZ 1.5 parts Accelerator M 1.0 part Superabsorbent resin 100 parts However, in Table 1, TT is tetrathiuram disulfide, PZ is dimethyldithiocarbamate zinc, and M is 2-
The mercaptobenzothiazole and the superabsorbent resin are "KI gel 201K-F2" manufactured by Kuraray Co., Ltd. under the trade name.
【００１９】上記遮水シート１０Ａ、１０Ｂの四周にク
ロロプレンゴムからなる防水性シーリング剤（ノガワケ
ミカル社製、商品名「ＤＣ−６１００」）を塗布するこ
とにより厚み０．３mmの防水塗膜を形成した。そして、
上記の遮水シート１０Ａ、１０Ｂの側縁を裏面同士が接
するように重ね（図２参照）、その間にブチルゴムから
なる粘着性テープ（厚み０．５mm、幅５０mm）を挟み、
ローラを使用し、圧力１kg／cm2 で加圧し、仮接着し
た。A waterproof coating film having a thickness of 0.3 mm is formed by applying a waterproof sealing agent made of chloroprene rubber (Nogawa Chemical Co., Ltd., trade name "DC-6100") on the four circumferences of the water-blocking sheets 10A and 10B. did. And
The side edges of the above water-impervious sheets 10A and 10B are overlapped so that the back surfaces are in contact with each other (see FIG. 2), and an adhesive tape made of butyl rubber (thickness 0.5 mm, width 50 mm) is sandwiched therebetween,
Using a roller, pressure was applied at a pressure of 1 kg / cm 2 for temporary adhesion.
【００２０】しかるのち、上記遮水シート１０Ａ、１０
Ｂの接着部分をナイロンモノフィラメント糸（１２６０
デニール）からなる縫い糸１６で縫合し、５本の縫目を
７mm間隔で形成し、しかるのち２４時間放置して接着面
および縫目からの漏水が無い強固な接着面を得た。After that, the above-mentioned impermeable sheets 10A, 10
Nylon monofilament thread (1260)
Denture) was sewn with a sewing thread 16 to form five seams at intervals of 7 mm, and then left for 24 hours to obtain an adhesive surface and a strong adhesive surface free from water leakage from the seams.
【００２１】[0021]
【発明の効果】請求項１に記載した発明は、自己修復性
を有し、かつ繊維シートで補強された２枚の遮水シート
の端部または側縁を重ねて接合する際、上記２枚の遮水
シートの端部または側縁間に自然加硫タイプのゴムから
なる粘着性テープを挟んで加圧し、次いでこの粘着性テ
ープの挟まれた部分を表面平滑な縫い糸で縫合すること
を特徴とする遮水シートの接合方法であるから、２枚の
遮水シートを容易に縫合することができ、この縫合によ
り２枚の遮水シートの重ね合わせ部が外力によってずれ
たり、剥離したりすることなく自然加硫によって完全に
接着される。しかも、縫い糸の締付けで遮水シートの裂
けることが防止され、また縫目に水の侵入することがな
く、仮に水が侵入した場合は、遮水シートの自己修復性
によって水の侵入が阻止される。According to the invention described in claim 1, when the end portions or side edges of two water-impervious sheets having self-healing property and reinforced with a fiber sheet are overlapped and joined, the above-mentioned two sheets are used. It is characterized in that a pressure-sensitive adhesive tape made of natural vulcanization type rubber is sandwiched between the ends or side edges of the water-impermeable sheet, and then the sandwiched portion of this pressure-sensitive adhesive tape is sewn with a suture with a smooth surface. Since this is the method of joining the water-impervious sheets, the two water-impervious sheets can be easily sewn together, and due to this stitching, the overlapping portion of the two water-impervious sheets is displaced or peeled off by an external force. Completely bonded by natural vulcanization without any In addition, the watertight sheet is prevented from tearing by tightening the sewing thread, and if water does not enter the seam, the water will be prevented from entering due to the self-healing property of the watertight sheet. It
【００２２】また、請求項２に記載した発明は、上記の
請求項１に記載された自己修復性遮水シートの接合方法
において、該遮水シートの端部および側縁の各端面に防
水性シーリング剤を塗布する方法であるから、遮水シー
トの縁部に露出する繊維シートの断面から水の侵入する
ことがない。Further, the invention described in claim 2 is the method for joining the self-healing waterproof sheet according to claim 1, wherein the end portions of the waterproof sheet and the side edges are waterproof. Since this is a method of applying a sealing agent, water does not enter from the cross section of the fiber sheet exposed at the edge of the water-blocking sheet.
【図１】縫合部の一例を示す断面図である。FIG. 1 is a cross-sectional view showing an example of a stitching portion.
【図２】縫合部の他の例を示す断面図である。FIG. 2 is a cross-sectional view showing another example of the suture portion.
【図２】縫合部の更に他の例を示す断面図である。FIG. 2 is a cross-sectional view showing still another example of the suture portion.
１０Ａ、１０Ｂ：遮水シート、１１：外面シート、１
２：中間シート、１３：繊維シート、１４：粘着性テー
プ、１５：防水性塗膜、１６：縫い糸。10A, 10B: water-blocking sheet, 11: outer sheet, 1
2: Intermediate sheet, 13: Fiber sheet, 14: Adhesive tape, 15: Waterproof coating film, 16: Sewing thread.
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成６年８月１２日[Submission date] August 12, 1994
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図面の簡単な説明[Name of item to be corrected] Brief description of the drawing
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図面の簡単な説明】[Brief description of drawings]
【図１】縫合部の一例を示す断面図である。FIG. 1 is a cross-sectional view showing an example of a stitching portion.
【図２】縫合部の他の例を示す断面図である。FIG. 2 is a cross-sectional view showing another example of the suture portion.
【図３】縫合部の更に他の例を示す断面図である。FIG. 3 is a cross-sectional view showing still another example of the suture portion.
【符号の説明】 １０Ａ、１０Ｂ：遮水シート、１１：外面シート、１
２：中間シート、１３：繊維シート、１４：粘着性テー
プ、１５：防水性塗膜、１６：縫い糸。[Explanation of reference numerals] 10A, 10B: water-blocking sheet, 11: outer sheet, 1
2: Intermediate sheet, 13: Fiber sheet, 14: Adhesive tape, 15: Waterproof coating film, 16: Sewing thread.
Claims (2)
強された２枚の遮水シートの端部または側縁を重ねて接
合する際、上記２枚の遮水シートの端部または側縁間に
自然加硫タイプのゴムからなる粘着性テープを挟んで加
圧し、次いでこの粘着性テープの挟まれた部分を表面平
滑な縫い糸で縫合することを特徴とする自己修復性遮水
シートの接合方法。1. When the end portions or side edges of two water-impervious sheets which are self-healing and are reinforced with a fiber sheet are overlapped and joined, the end portions or sides of the two water-impermeable sheets are bonded. A self-healing water-impervious sheet characterized in that an adhesive tape made of natural vulcanization type rubber is sandwiched between the edges and pressed, and then the sandwiched portion of the adhesive tape is sewn with a suture having a smooth surface. Joining method.
防水性シーリング剤を塗布する請求項１に記載された自
己修復性遮水シートの接合方法。2. The method for joining self-healing waterproof sheets according to claim 1, wherein a waterproof sealing agent is applied to each end surface and each end surface of the side edge of the waterproof sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11362294A JP2767548B2 (en) | 1994-04-28 | 1994-04-28 | Bonding method of self-healing impermeable sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11362294A JP2767548B2 (en) | 1994-04-28 | 1994-04-28 | Bonding method of self-healing impermeable sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07290576A true JPH07290576A (en) | 1995-11-07 |
| JP2767548B2 JP2767548B2 (en) | 1998-06-18 |
Family
ID=14616888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11362294A Expired - Lifetime JP2767548B2 (en) | 1994-04-28 | 1994-04-28 | Bonding method of self-healing impermeable sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2767548B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005224712A (en) * | 2004-02-13 | 2005-08-25 | Takiron Co Ltd | Renewal structure of final disposal site |
| KR20200007137A (en) * | 2018-07-12 | 2020-01-22 | 이승재 | An expansion joint for bridge having watertight member of a fabric or a high-strength sheet and an its construction method. |
-
1994
- 1994-04-28 JP JP11362294A patent/JP2767548B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005224712A (en) * | 2004-02-13 | 2005-08-25 | Takiron Co Ltd | Renewal structure of final disposal site |
| KR20200007137A (en) * | 2018-07-12 | 2020-01-22 | 이승재 | An expansion joint for bridge having watertight member of a fabric or a high-strength sheet and an its construction method. |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2767548B2 (en) | 1998-06-18 |
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