JPH03173640A - Cut-off tape - Google Patents
Cut-off tapeInfo
- Publication number
- JPH03173640A JPH03173640A JP1310715A JP31071589A JPH03173640A JP H03173640 A JPH03173640 A JP H03173640A JP 1310715 A JP1310715 A JP 1310715A JP 31071589 A JP31071589 A JP 31071589A JP H03173640 A JPH03173640 A JP H03173640A
- Authority
- JP
- Japan
- Prior art keywords
- water
- layer
- soluble resin
- base material
- slot
- 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.)
- Pending
Links
- 229920005989 resin Polymers 0.000 claims abstract description 56
- 239000011347 resin Substances 0.000 claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 230000008961 swelling Effects 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 12
- 238000010828 elution Methods 0.000 claims abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000002250 absorbent Substances 0.000 description 11
- 239000013307 optical fiber Substances 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 230000002745 absorbent Effects 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000011976 maleic acid Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- LZDDXRWBWZUFHD-ODZAUARKSA-N (z)-but-2-enedioic acid;2-methylprop-1-ene Chemical compound CC(C)=C.OC(=O)\C=C/C(O)=O LZDDXRWBWZUFHD-ODZAUARKSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229920006322 acrylamide copolymer Polymers 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- CYKDLUMZOVATFT-UHFFFAOYSA-N ethenyl acetate;prop-2-enoic acid Chemical compound OC(=O)C=C.CC(=O)OC=C CYKDLUMZOVATFT-UHFFFAOYSA-N 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Laminated Bodies (AREA)
- Adhesive Tapes (AREA)
Abstract
Description
【発明の詳細な説明】
（発明の産業上利用分野）
本発明は止水テープ、さらに詳細には光フアイバケーブ
ルに侵入した水を短時間に止水する止水テープに関する
。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field of the Invention) The present invention relates to a water stop tape, and more particularly to a water stop tape that quickly stops water entering an optical fiber cable.
（従来技術および問題点）
第１図は光フアイバケーブルの断面図であるが、この図
より明らかなように、中心にテンションメンバ１が挿通
されたスロットロッド２にテープ心線３を複数積層して
収納するスロット４を設けるとともに、このスロットロ
ッド２を止水テープ５で捲回した後、さらにシース６を
被覆した構造になっている。(Prior Art and Problems) Fig. 1 is a cross-sectional view of an optical fiber cable, and as is clear from this figure, a plurality of tape core wires 3 are laminated on a slot rod 2 through which a tension member 1 is inserted. In addition to providing a slot 4 for housing the slot rod 2, the slot rod 2 is wound with a water stop tape 5 and then covered with a sheath 6.
一般に光フアイバケーブルは、前述のようにシース６に
よって覆われているために、その内部に水が侵入するこ
とはないが、シース６が何らかの理由で破れたり、穴が
開いたりした時には、前記シース６の下部に捲回された
止水テープ５によって水を吸収するようになっている。Generally, optical fiber cables are covered with the sheath 6 as described above, so water does not enter into the inside of the cable. However, if the sheath 6 is torn or has a hole for some reason, the sheath Water is absorbed by the water stop tape 5 wound around the lower part of the tape 6.
このような止水テープ５は、第２図に示すように基材５
１の片面に高吸水性樹脂粉末を含む水溶性樹脂層からな
る吸水膨潤層５２を設けた構造になっている。すなわち
、水溶性樹脂の有機溶剤溶液に高吸水性樹脂粉末を分散
させると共に基材５１の片面に塗布し、乾燥して有機溶
剤を蒸発させ、製造されたものであった。Such a water stop tape 5 has a base material 5 as shown in FIG.
It has a structure in which a water-absorbing and swelling layer 52 made of a water-soluble resin layer containing super-absorbent resin powder is provided on one side of the water-absorbing resin. That is, it was manufactured by dispersing superabsorbent resin powder in an organic solvent solution of a water-soluble resin, coating it on one side of the base material 51, and drying to evaporate the organic solvent.
このような構造の吸水膨潤層５２においては、水か侵入
してきたときに、まず前記水溶性樹脂層より露出する高
吸水性樹脂が吸水膨潤すると共に、水溶性樹脂か溶解し
、中に埋設された高吸水性樹脂粉末を徐々に露出させ、
露出した前記高吸水性樹脂粉末か吸水膨潤することによ
って止水するものである。In the water-absorbing and swelling layer 52 having such a structure, when water enters, the super-absorbent resin exposed from the water-soluble resin layer absorbs water and swells, and the water-soluble resin also dissolves and is buried inside. Gradually expose the super absorbent resin powder.
The exposed super absorbent resin powder absorbs water and swells to stop water.
上述のような水溶性樹脂層中に高吸水性樹脂粉末を分散
さぜな吸水膨潤層にあっては、水溶性樹脂が溶解するま
て若干の時間か費やされることになるため、侵入した水
を吸水し、膨潤することによって水の侵入を上水するま
でに時間かかがるという欠点かある。In a water-absorbing swelling layer such as the one described above, in which super-absorbent resin powder is dispersed in a water-soluble resin layer, it takes some time for the water-soluble resin to dissolve. The disadvantage is that it takes a long time to absorb water and swell, so it takes time to remove the water.
このため、−度に多量の水か侵入した場合、第３図に示
すようにテープ心線３か収納されているスロット４に水
か侵入し、前記テープ心線３とスロット４の隙間を水が
ケーブルの軸方向に流れる現象、いわゆる水走り現象か
生じる。Therefore, if a large amount of water enters at once, the water will enter the slot 4 in which the tape core wire 3 is housed, as shown in FIG. A phenomenon occurs in which water flows in the axial direction of the cable, a so-called water running phenomenon.
（発明の目的）
本発明は上述の問題点に鑑みなされたものであり、前記
基材より吸水膨潤層が離脱して、スロット内を埋め、水
走りか生じないようにした止水テープを提供することを
目的とする。(Object of the Invention) The present invention has been made in view of the above-mentioned problems, and provides a water-stopping tape in which a water-absorbing and swelling layer separates from the base material and fills the inside of the slot so that only water running occurs. The purpose is to
（問題点を解決するための手段）
上記問題点を解決するため、本発明による止水テープは
、基祠と水溶性又は吸水性樹脂に高吸水性樹脂粉末を分
散さぜな吸水膨潤層との間に水溶性樹脂層を設けたこと
を特徴とする。(Means for Solving the Problems) In order to solve the above problems, the water-stop tape according to the present invention has a base layer and a water-absorbing swelling layer in which super-absorbent resin powder is dispersed in a water-soluble or water-absorbing resin. It is characterized in that a water-soluble resin layer is provided in between.
本発明による市水テープによれは、吸水膨潤層と基Ｈの
間に水溶性樹脂層を設けたなめ、侵入した水は、まずこ
の水溶性樹脂層を溶解することになり、前記吸水膨潤層
はスロット内に剥落する。The problem with the city water tape according to the present invention is that since a water-soluble resin layer is provided between the water-absorbing swelling layer and the group H, the water that enters will first dissolve this water-soluble resin layer, and the water-absorbing swelling layer flakes off into the slot.
このなめスロット内は吸水膨潤層で埋められることにな
るなめ、水走りを生じしめないという利点かある。The inside of this slot is filled with a water-absorbing swelling layer, which has the advantage of not causing water running.
本発明をさらに詳しく説明すると、第４図に示すように
、基材５］と吸水膨潤層５２との間に水溶性樹脂層５３
か設けられた構造になっている。To explain the present invention in more detail, as shown in FIG.
It has a built-in structure.
本発明により使用される基材は、基本的に限定されるも
のてはなく、従来この種のテープ基材として使用される
ものを有効に使用することか゛できる。たとえは不織布
、紙、プラスチックフィルムなどを有効に使用てきる。The base material used in the present invention is basically not limited, and those conventionally used as tape base materials of this type can be effectively used. For example, non-woven fabrics, paper, plastic films, etc. can be used effectively.
吸水膨潤層に使用される高吸水性樹脂は従来この種の止
水テープに使用されているものであれば基本的にいかな
るものてもよい。たとえば澱粉、アクリロニトリルクラ
フト重合体の加水分解物、澱粉＝アクリルニトリル酸グ
ラフト重合体の中和物、酢酸ビニル−アクリル酸エステ
ル共重合体の加水分解物またはこれらの架橋体もしくは
アクリルアミド共重合体の加水分解物又はこれらの架橋
体、逆相懸濁液によってえられた自己架橋型ポリアクリ
ル酸ナトリウム、ポリアクリル酸部分中和物架橋体、ポ
リエチレンオキサイド架橋体、イソフヂレンーマレイン
酸共重合体などが挙げられる。The superabsorbent resin used in the water-absorbing and swelling layer may be basically any resin that has been conventionally used in this type of water-stop tape. For example, starch, a hydrolyzate of acrylonitrile craft polymer, a neutralized starch-acrylic nitrile acid graft polymer, a hydrolyzate of vinyl acetate-acrylic acid ester copolymer, or a crosslinked product thereof or a hydrolyzed acrylamide copolymer. Decomposition products or crosslinked products thereof, self-crosslinked sodium polyacrylate obtained by reverse phase suspension, crosslinked partially neutralized polyacrylic acid, crosslinked polyethylene oxide, isophylene-maleic acid copolymer, etc. can be mentioned.
このような高吸水性樹脂粉末の粒径は、好ましくは５０
〜１５０μｍであるのがよい。２０μｍ未満であると、
ままこになり易く、吸水速度が低下し、吸水力も小さい
。一方２５０μｍを越えると、吸水速度か遅くなり、コ
ーチインクの時筋か出る。基材に良好に保持されにくい
からである。The particle size of such super absorbent resin powder is preferably 50
The thickness is preferably 150 μm. If it is less than 20 μm,
It tends to become sticky, the water absorption rate decreases, and the water absorption power is also small. On the other hand, if it exceeds 250 μm, the water absorption rate becomes slow and streaks appear when the coach ink is used. This is because it is difficult to be retained well on the base material.
このような高吸水性樹脂粉末が分散された水溶性又は吸
水性樹脂は、従来この種の止水テープに使用するもので
あれは基本的に限定されるものではない。例えはポリエ
チレンオキサイド、ポリウレタンなどを使用することか
できる。The water-soluble or water-absorbing resin in which such a super-absorbent resin powder is dispersed is basically not limited to any one conventionally used in this type of water-stop tape. For example, polyethylene oxide, polyurethane, etc. can be used.
この吸水膨潤層の厚さは、好ましくは０．１〜０．５ｍ
ｍである。０．１ｍｍ未満であると、充分な止水効果を
発揮できない恐れかあり、一方、０．５ｍｍを越えても
、止水性能に差がないので、材料が無駄になる。The thickness of this water-absorbing swelling layer is preferably 0.1 to 0.5 m.
It is m. If it is less than 0.1 mm, there is a risk that a sufficient water-stopping effect cannot be exhibited, whereas if it exceeds 0.5 mm, there is no difference in water-stopping performance, so the material is wasted.
本発明においては上述のような基材と吸水膨潤層との間
に水溶性樹脂層を設けている。上述のような水溶性樹脂
としては、常態においては良好に基材に接着し、水か侵
入したときには速やかに溶解するものであることが必要
である。また、保管、運搬時を考慮すれば、空気中の湿
気によって吸水膨潤層が剥落しないようなものであるこ
とが好ましい。In the present invention, a water-soluble resin layer is provided between the base material and the water-absorbing swelling layer as described above. The above-mentioned water-soluble resin needs to be one that adheres well to the base material under normal conditions and quickly dissolves when water enters the resin. Furthermore, in consideration of storage and transportation, it is preferable that the water-absorbing swelling layer does not peel off due to moisture in the air.
このような水溶性樹脂としては、例えばボリヒニルアル
コール、インフチレンーマレイン酸共重合体などを挙げ
ることかできる。Examples of such water-soluble resins include polyhinyl alcohol, inphthylene-maleic acid copolymer, and the like.
上述のような水溶性樹脂の溶出度は、好ましくは８０％
以上であるのが好ましい。The elution degree of the water-soluble resin as described above is preferably 80%.
The above is preferable.
８０％未満であると、水が侵入してきたときに速やかに
スロット内に吸水膨潤層が剥落しない恐れがある。ここ
で溶出度は（Ｗｏ−Ｗ） Ｘ ］、 ＯＯ／Ｗｏで示さ
れる（たなし、Ｗｏはフィルム作製時のもとの重量、Ｗ
は一定時間水に親戚した後、絶乾差ぜな重量であり、Ｗ
ｏ＞Ｗ）。If it is less than 80%, there is a risk that the water-absorbing swelling layer will not peel off quickly into the slot when water enters the slot. Here, the dissolution degree is expressed as (Wo-W)
is the weight that remains completely dry after being exposed to water for a certain period of time, and W
o>W).
また水溶性樹脂層の厚さは、好ましくは５０〜１００μ
ｍであるのか好ましい。５０μｍ未満であると加工の際
均−な膜がてきない恐れがあるので、水溶性樹脂層を設
けた意味がなく、また１００μｍを越えると、やはり、
空気中の水分により溶解し易くなり、保管、取り扱いに
困難を生じる恐れがある。Further, the thickness of the water-soluble resin layer is preferably 50 to 100 μm.
It is preferable that it is m. If it is less than 50 μm, there is a risk that a uniform film will not be formed during processing, so there is no point in providing a water-soluble resin layer, and if it exceeds 100 μm,
It becomes easily dissolved by moisture in the air, which may cause difficulties in storage and handling.
このような吸水膨潤層を設けた基材の面の反対の面およ
び／または吸水層の下部に防水層を設けることかできる
。このように防水層を設けることによって止水性をさら
に向」ニさせることができる。A waterproof layer can be provided on the opposite side of the base material provided with such a water-absorbing swelling layer and/or below the water-absorbing layer. By providing a waterproof layer in this way, water-stopping properties can be further improved.
上述のような防水層としては、たとえば、ゴム、エラス
トマー、プラスチックフィルムなどを挙げることができ
る。Examples of the above-mentioned waterproof layer include rubber, elastomer, and plastic film.
本発明による止水テープの製造方法によれば、まず、基
材の片面に水溶性樹脂溶液を塗布し、乾燥して水溶性樹
脂層を形成する。According to the method for manufacturing a water stop tape according to the present invention, first, a water-soluble resin solution is applied to one side of a base material and dried to form a water-soluble resin layer.
その後、有機溶剤中に溶解した前述のような水溶性又は
吸水性樹脂溶液中に高吸水性樹脂粉末を添加し、分散さ
せた混合溶液を前記水溶性樹脂層」二に塗布乾燥して、
吸水膨潤層を形成する。Thereafter, a super water-absorbent resin powder is added to the aforementioned water-soluble or water-absorbent resin solution dissolved in an organic solvent, and a dispersed mixed solution is applied to the water-soluble resin layer and dried.
Forms a water-absorbing swelling layer.
上述の有機溶媒は前記水溶性樹脂又は吸水性樹脂を溶解
するものであれば、基本的にいかなるものでもよい。例
えば、上記水溶性又は吸水性樹脂の場合、トルエン、キ
シレンなとの芳香族系、塩化エチレン、１ヘリクレンな
との塩素系、アセトン、ＭＩＫなどのケトン系、メタノ
ール、ＩＰＡなとのアルコール系、その他エステル系の
他、ＤＭＦ、ＴＨＦ、ジオキサンなどを使用することが
できる。Basically, any organic solvent may be used as the organic solvent as long as it dissolves the water-soluble resin or water-absorbing resin. For example, in the case of the above-mentioned water-soluble or water-absorbing resin, aromatic type such as toluene and xylene, chlorine type such as ethylene chloride and 1-helicalene, ketone type such as acetone and MIK, alcohol type such as methanol and IPA, In addition to esters, DMF, THF, dioxane, etc. can be used.
以下実施例を説明する。Examples will be described below.
実施例１
不織布にイソブチレン−マレイン酸共重合体樹脂溶液を
塗布し、乾燥して厚さ０．１ｍｍの水溶性樹脂層を形成
した。その後、ポリエチレンオキサイドの二塩化エチレ
ン溶液に、イソブチレン−マレイン酸共重合体（高吸水
性樹脂）の粉末（平均粒径１００μｍ）をポリエチレン
オキサイド１００重量部に対し７００重量部添加し、分
散させた後、前記水溶性樹脂層上に塗布し、乾燥した吸
水膨潤層を形成させた。Example 1 An isobutylene-maleic acid copolymer resin solution was applied to a nonwoven fabric and dried to form a water-soluble resin layer with a thickness of 0.1 mm. Thereafter, 700 parts by weight of isobutylene-maleic acid copolymer (super absorbent resin) powder (average particle size 100 μm) was added to 100 parts by weight of polyethylene oxide to the ethylene dichloride solution of polyethylene oxide, and the mixture was dispersed. , was coated on the water-soluble resin layer and dried to form a water-absorbing swelling layer.
比較として、上記実施例１と同様で水溶性樹脂層を有し
ていない止水テープを製造した。For comparison, a water stop tape similar to that of Example 1 but without a water-soluble resin layer was produced.
結果を第１表に示す。The results are shown in Table 1.
また防水層をふくむ本発明による止水テープを実施例２
として示した。In addition, Example 2 shows a water-stop tape according to the present invention including a waterproof layer.
It was shown as
第１表
（発明の効果）
本発明によれば、吸水膨潤層と基材の間に水溶性樹脂層
を設けたため、侵入した水は、まずこの水溶性樹脂層を
溶解することになり、前記吸水膨潤層はスロット内に剥
落する。このためスロット内は吸水膨潤層で埋められる
ことになるため、水走りを生じしめないという利点があ
る。Table 1 (Effects of the Invention) According to the present invention, since the water-soluble resin layer is provided between the water-absorbing and swelling layer and the base material, the water that enters will first dissolve this water-soluble resin layer, and the above-mentioned The water-absorbing swelling layer peels off into the slot. Therefore, the inside of the slot is filled with a water-absorbing swelling layer, which has the advantage of not causing water running.
第１図は光ファイバヶーフルの断面図、第２図は止水テ
ープのｔｆＡ造を示す断面図、第３図は光ファイバケー
フルのスロット付近の拡大図、第４図は本発明の止水テ
ープの断面図である。
１・・・テンションメンバ、２ ・・スロットロッド、
３ ・・テープ心線、４・・・スロット、５・・・止水
テープ、５１・・・基材、５２・・ ・吸水膨潤層、５
３・・・水溶性樹脂層６・・・シース
」二記代理人 雨宮正季
１
第１図
第２図Fig. 1 is a sectional view of the optical fiber cable, Fig. 2 is a sectional view showing the tfA structure of the water stop tape, Fig. 3 is an enlarged view of the vicinity of the slot of the optical fiber cable, and Fig. 4 is the water stop tape of the present invention. FIG. 1... Tension member, 2... Slot rod,
3... Tape core wire, 4... Slot, 5... Water stop tape, 51... Base material, 52... - Water absorbing swelling layer, 5
3...Water-soluble resin layer 6...Sheath" 2 Representative Masaki Amemiya 1 Figure 1 Figure 2
Claims (2)
を分散させた吸水膨潤層との間に水溶性樹脂層を設けた
ことを特徴とする止水テープ。(1) A water-stopping tape characterized in that a water-soluble resin layer is provided between a base material and a water-absorbing swelling layer made of a water-soluble or water-absorbing resin with superabsorbent resin powder dispersed therein.
とを特徴とする特許請求の範囲第１項記載の止水テープ
。(2) The water stop tape according to claim 1, wherein the degree of elution of the water-soluble resin layer is 80% or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1310715A JPH03173640A (en) | 1989-12-01 | 1989-12-01 | Cut-off tape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1310715A JPH03173640A (en) | 1989-12-01 | 1989-12-01 | Cut-off tape |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03173640A true JPH03173640A (en) | 1991-07-26 |
Family
ID=18008606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1310715A Pending JPH03173640A (en) | 1989-12-01 | 1989-12-01 | Cut-off tape |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03173640A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009086636A (en) * | 2007-09-12 | 2009-04-23 | Fujikura Ltd | Water absorptive optical fiber and method for manufacturing the same |
| US20110176782A1 (en) * | 2010-01-20 | 2011-07-21 | Draka Comteq, B.V. | Water-Soluble Water-Blocking Element |
-
1989
- 1989-12-01 JP JP1310715A patent/JPH03173640A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009086636A (en) * | 2007-09-12 | 2009-04-23 | Fujikura Ltd | Water absorptive optical fiber and method for manufacturing the same |
| US20110176782A1 (en) * | 2010-01-20 | 2011-07-21 | Draka Comteq, B.V. | Water-Soluble Water-Blocking Element |
| US9042693B2 (en) * | 2010-01-20 | 2015-05-26 | Draka Comteq, B.V. | Water-soluble water-blocking element |
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