JPS6185007A - Heat-shrinkable coated material for connecting cable - Google Patents
Heat-shrinkable coated material for connecting cableInfo
- Publication number
- JPS6185007A JPS6185007A JP59203665A JP20366584A JPS6185007A JP S6185007 A JPS6185007 A JP S6185007A JP 59203665 A JP59203665 A JP 59203665A JP 20366584 A JP20366584 A JP 20366584A JP S6185007 A JPS6185007 A JP S6185007A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- shrinkable
- cable
- sealing
- connecting cable
- 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
Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
- Graft Or Block Polymers (AREA)
- Cable Accessories (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
「産業上の利用分野Ｊ
大発明は、電気・通信ケーブルの接続部を被覆する熱収
縮性被覆物に係わり、特に、被覆状態における密封性の
良好なケーブル接続用熱収縮性被覆物に関するものであ
る、
「従来の技術」
第３図および第４図は、従来の熱収縮性被覆物によって
通信ケーブルの接続部を被覆し次状態を示すものである
。この熱収縮性被覆物ｌは、シート状の熱収縮体２の外
面に、その両側縁部に沿って突出するリプ３が設けられ
、かつ、内面に熱融着層４が設けられｔもので、熱収縮
体２は、延伸処理されｔ架橋ポリエチレン等によって形
成されて幅方ｆＥｉＪ （填３図周方向）への熱収縮性
を備え、ｆ７ｔＪ％融着層４は、低密度ポリエチレンあ
るいはＩＡ （エチレン−酢酸 ビニル共重合体）を
主成分とする融着剤によって形成されて、ケーブルシー
ス等に対する熱融着性を備えている。そして。DETAILED DESCRIPTION OF THE INVENTION The invention relates to a heat-shrinkable covering for connecting parts of electrical and communication cables, and particularly relates to a heat-shrinkable covering for cable connections that has good sealing properties in the coated state. 3 and 4, which relate to shrinkable coatings, show the state in which a connecting portion of a communication cable is covered with a conventional heat-shrinkable coating. This heat-shrinkable covering 1 has lips 3 protruding along both side edges on the outer surface of a sheet-like heat-shrinkable body 2, and a heat-sealing layer 4 on the inner surface. The heat-shrinkable body 2 is made of stretched crosslinked polyethylene or the like and has heat-shrinkability in the width direction fEiJ (circumferential direction in Figure 3), and the f7tJ% adhesive layer 4 is made of low-density polyethylene or IA ( It is formed from a fusion agent whose main component is ethylene-vinyl acetate copolymer), and has heat-fusion properties for cable sheaths and the like. and.
図示の如く、主ケーブル５と分岐ケーブル６．６の接続
部７に巻き付けられ＆前記熱融着層４同志をその両側縁
部および分岐ケーブル６．６の間で突き合わせ次状態で
加熱されることにより、収縮かつ接続部７に熱融着して
、接続部７を密封状態に被覆するようになっている。As shown in the figure, the heat-sealing layer 4 is wrapped around the connecting portion 7 of the main cable 5 and the branch cable 6.6, and the heat-sealing layer 4 is brought into contact between its both side edges and the branch cable 6.6, and heated in the next state. As a result, it is shrunk and heat-sealed to the connecting portion 7, thereby sealingly covering the connecting portion 7.
「発明が解決しようとする問題点」
ところで、このような熱収縮性被覆物を加熱する際には
、全体をできる限り均一に加熱するととが望ましいが、
加熱手段としてバーナやトーチランプ等を用い友場合、
加熱状態が作業者の熟練度に左右される皮め、加熱むら
が生じ易（、この加熱むらによって１例えば第４図に示
す如く１両側縁部の合わせ目Ａあるいは分岐ケーブル６
．６の間の合わせ目Ｂに空隙Ｓが発生して、接続部７の
密封状態が不完全となるおそれがある。そこで、空隙Ｓ
の発生を抑えるために％熱融着層４の流動性あるいは融
点等を調整することが考えられるが。"Problems to be Solved by the Invention" By the way, when heating such a heat-shrinkable coating, it is desirable to heat the whole as uniformly as possible;
When using a burner, torch lamp, etc. as a heating means,
The heating condition depends on the skill level of the operator, and uneven heating tends to occur (for example, as shown in FIG.
．． There is a possibility that a gap S may occur at the seam B between the joints 6 and 6, and the sealing state of the connection portion 7 may become incomplete. Therefore, the void S
In order to suppress the occurrence of this, it may be possible to adjust the fluidity or melting point of the heat-sealing layer 4.
熱融着層４がＥＶＡ の場合、例えばｖＡ （酢酸ビ
ニル）の含有量が多（１」点の低い材料を用いた場合に
は、接続部７との接着強度が低下し％また。If the heat-sealing layer 4 is made of EVA, for example, if a material with a low vA (vinyl acetate) content of 1 is used, the adhesive strength with the connecting portion 7 will decrease.
分子量が低く流動性（メルトインデックス）の高い材料
を用いた場合には、材料強度が低下して前記廿わせ目Ａ
、Ｂ等における気密性が損なわれるという問題が生じる
。When a material with a low molecular weight and high fluidity (melt index) is used, the strength of the material decreases and the seam A
, B, etc., the problem arises that airtightness is impaired.
「問題点分解法する几めの手段」
本発明は、前記問題点を解決する几めに、熱融着層とし
て、エチレン・α−オレフ１ン共重会体に不飽和ジカル
ボン酸、またはその無水物をグラフトし比熱可塑性エラ
ストマーを主体とする組成物を用い比ものである。"Easy Means for Solving Problems" In order to solve the above-mentioned problems, the present invention provides a thermal adhesive layer in which an unsaturated dicarboxylic acid or its This method uses a composition mainly composed of a specific thermoplastic elastomer grafted with an anhydride.
「作用」
本発明のケーブル接続用熱収縮性被覆物を加熱し九場合
、熱融着層が容易に溶融し、かつ、すみや〃）に流動し
て空隙を埋め、さらには％接続部との間あるいは合わせ
目等において優れた接着強度を発揮する。"Function" When the heat-shrinkable coating for cable connections of the present invention is heated, the heat-sealing layer easily melts and flows to fill the voids and further bond to the connection parts. Demonstrates excellent adhesive strength at gaps or seams.
「実施例」
以下本発明の一実施例を第１図および第２図１：基づい
て説明すると、この熱収縮性被覆物８は、幅方同（第１
図Ｘ−Ｘ方同〕に熱収縮性？有するとともに、リブ３を
備え７？＋熱収縮体２の内面に、エチレン・α−オレフ
ィン共重合体に不ｇ３ 和ジカルボンα％またはその無
水物をグラフトし比熱可塑性エラストマーを主体とする
組成物からなる熱融着層９が設けられ土ものである。“Example” An example of the present invention will be described below based on FIG. 1 and FIG.
Is there heat shrinkage in the same direction as Figure X-X? It also has ribs 3 and 7? + On the inner surface of the heat-shrinkable body 2, a heat-sealing layer 9 is provided, which is made of a composition mainly composed of a specific thermoplastic elastomer, which is obtained by grafting α% of dicarbonate or its anhydride onto an ethylene/α-olefin copolymer. It is earthy.
前記エチレン・α−オレフィン共重合体としては、エチ
レンに、炭素数３以上のα−オレフィン例えばプロピレ
ン、１−ブテン１，４−メチル−１ペンテン、ｌ−ヘキ
セン、ｌ−オクテンと、ブタジェン、イソプレン、ジシ
クロペンタジェン、５− ｘ チｕ テン−２−ノルボ
ルネン％ １．６−へキサジエン等の共役ジエンと全共
重合させたものが使用され、エチレン５０〜９５モル優
、α−オレフィン５〜５０モル％％共役ジエン０〜３モ
ル係の究比のものが好適である。ｉ ｆｃ ｍ不飽和ジ
カルボン酸擾たはその無水物とり、てけ、マレイン酸。The ethylene/α-olefin copolymer includes ethylene, an α-olefin having 3 or more carbon atoms, such as propylene, 1-butene, 1,4-methyl-1-pentene, l-hexene, l-octene, butadiene, and isoprene. , dicyclopentadiene, 5- x t-2-norbornene% 1.6-hexadiene and other conjugated dienes are used, and 50 to 95 moles of ethylene, 5 to 5 to The ultimate ratio of 0 to 3 moles of conjugated diene is preferably 50% by mole. i fcm unsaturated dicarboxylic acid or its anhydride, maleic acid.
フマル酸、１タコン酸、シトラコン酸、ナジック酸、無
水マレイン酸、無水シトラコン酸、無水ナジック酸等が
使用される。そして、不飽和ジカルボン酸、プたはその
無水物のグラフト重合は、過酸化物等のラジカＡ−開始
剤を用いて反応溶媒中で行なわれる。この熱可塑性エラ
ストマーは、溶融流動性に優れ、かつ％接着性も良好で
熱変形温度も高（％耐熱性も良好であり、任惹の形状に
押出加工、射出加工が行なえ、熱融着層をなす材料とし
ては好適である。また、この熱可塑性エラストマーには
、心安に応じて酸化防止剤、各様安定剤。Fumaric acid, taconic acid, citraconic acid, nadic acid, maleic anhydride, citraconic anhydride, nadic anhydride, etc. are used. Graft polymerization of unsaturated dicarboxylic acids, carboxylic acids, or anhydrides thereof is then carried out in a reaction solvent using a radical A-initiator such as a peroxide. This thermoplastic elastomer has excellent melt flowability, good adhesion, and high heat distortion temperature (also has good heat resistance), and can be extruded or injection processed into any shape, and has a heat-adhesive layer. This thermoplastic elastomer is suitable as a material for making the material.Additionally, this thermoplastic elastomer may contain antioxidants and various stabilizers as needed.
充填剤、顔料等を適宜配什して、熱融着層とすることも
できる。It is also possible to form a heat-fusible layer by appropriately distributing fillers, pigments, etc.
このように構成されたケーブル接続用熱収縮性被覆物８
は、従来のものと同様に熱融着層９１内側にしてケーブ
ルの接続部７等に巻き付け、熱融着層９同志をその両側
縁部等において突き合わせ几状態とし、バーナあるいは
トーチランプ等を用いて加熱することにより収縮させて
使用する。この加熱時に熱融着層９は容易に溶融し、か
つ、そ 。Heat-shrinkable covering for cable connection 8 configured in this way
As in the conventional case, the heat-sealing layer 91 is placed inside and wrapped around the connection part 7 of the cable, and the heat-sealing layers 9 are butted together at both edges, etc., and then heated using a burner or a torch lamp. Shrink it by heating it before use. During this heating, the heat-sealing layer 9 is easily melted.
の流動性が良いので、＠２図の如く両側縁部の合わせ目
Ａあるいは分岐ケーブル６．６の間の合わせ目Ｂにでき
る空隙を埋めて、これら合わせ目Ａ。Because of its good fluidity, as shown in Figure 2, the gaps created at the seams A on both side edges or the seams B between the branch cables 6 and 6 are filled, and these seams A are filled.
Ｂｔ気密Ｃ：接合し、かつ、接続部の表面に強固に接着
して、簡単に剥れるようなことが全くない。Bt airtight C: Bonds and firmly adheres to the surface of the connection part, and does not easily peel off at all.
次に１本発明の熱収縮性被覆物（イ）と、ＥＶＡ によ
る熱融着層を有する熱収縮性被覆物、すなわち比較例仲
）、（ハ）、に）について、密封性およびケーブルシー
ス（ポリエチレン）に対する剥離強度（ＪＩＳＫ ６
８５４）を調べ次結果を第１表に示して、本発明の作用
効果をより明確にする。但し１表中、密封性試験ｌは６
０°Ｃの恒温湯中において、密封性試験２は６０℃の恒
温雰囲気中において、各々、接続部に０．Ｂｙ／ｃｍ
のガス圧をかけてガスのリークを調べた試験結果であ
り、まｆＦ、、ｓ密封性試、憤３は接続部に０．４ｋｙ
１０７＋２のガス圧をかけ次後、６０°Ｃから一３０℃
までのヒートサイクル処理を１２時ｒｂ’ｌ ｖｈけて
ｌす１クル行なってからガスのリークを訓べ比試験結果
である。なお。Next, regarding the heat-shrinkable covering of the present invention (a) and the heat-shrinkable covering having a heat-sealing layer made of EVA, that is, comparative examples middle), (c), and ni), the sealing performance and cable sheath ( Peel strength against polyethylene (JISK 6
854) and the results are shown in Table 1 to clarify the effects of the present invention. However, in Table 1, the sealing test l is 6.
Sealing test 2 was conducted in a constant temperature hot water bath at 0°C, and in a constant temperature atmosphere at 60°C, each connection part was 0. By/cm
This is the result of a test to check for gas leaks by applying a gas pressure of 0.4K to the connection.
After applying a gas pressure of 107+2, heat from 60°C to -30°C.
These are the results of a comparative test to detect gas leaks after performing the heat cycle treatment for 1 cycle from 12:00 to 12:00. In addition.
数値は１０回の試験のうちガスのリークがなかった合格
回数を示している。The numerical value indicates the number of passes without gas leak out of 10 tests.
第１表
筆１表から明ら−Ｄ）なように、比較例（ロ）に対して
ＶＡ含有量を多ぐしてビカット軟化点を下げ次比較例（
ハ）、およびメルトインデックスな太き（Ｌｅｔ比較例
に）は、密封性、剥離強度／ともに低下してしまう。こ
れに対して、本発明の熱収縮性被覆物（Ｉ）Ｆｉ、比較
例（ロ）よりも、ビカット軟化点が低く。As shown in Table 1 (D), the VA content was increased to lower the Vicat softening point compared to Comparative Example (B), and the following Comparative Example (
C) and a thick melt index (for the comparative example), both sealability and peel strength deteriorate. On the other hand, the Vicat softening point is lower than that of the heat-shrinkable coating (I) Fi of the present invention and the comparative example (B).
η１つ、メルトインデックスも大き（、シかも、引張強
度（材料強度）が高い。従って、数値に示されるように
、密封性、剥離強度（接着強度）ともに優れている。It also has a high melt index and high tensile strength (material strength). Therefore, as shown in the numerical values, it has excellent sealing properties and peel strength (adhesive strength).
なお、上記実施例においては、熱収縮体２をシート状と
し几が、これに限らず、チューブ状あるいはスリーブ状
の熱収縮体の内面：：熱融着層９を設けるようにしても
よい。In the above embodiment, the heat-shrinkable body 2 is not limited to a sheet-like structure, but the heat-sealing layer 9 may be provided on the inner surface of a tube-like or sleeve-like heat-shrinkable body.
「発明の効果」
以上説明したように、本発明によれば、熱融着層ｔエチ
レン・α−オレフ１ン共重合体に不飽和ジカルボ′ン酸
またはその無水物をグラフトし次熱可塑性エラストマー
を主体とする組成物で構成したので％加熱し次際に熱融
Ｍ層が容易に＃Ｊ融し、かつ、すみやかに流動して合わ
せ目における空隙の発生を抑制し、ま比１合わせ目を強
固に接着するとともに、接続部に気密に接着して、被覆
状態における密封性を高め、さらには、加熱時の作業性
を向上させることができる。"Effects of the Invention" As explained above, according to the present invention, unsaturated dicarboxylic acid or its anhydride is grafted onto the heat-adhesive layer t ethylene/α-olefin copolymer, and then the thermoplastic elastomer Since it is composed of a composition mainly composed of It is possible to firmly adhere and airtightly adhere to the connection portion, thereby improving the sealing performance in the covered state and further improving the workability during heating.
ａＥ１図および第２図は、本発明の一実施例分示し、第
１図は斜視図％第２図は使用状態における分岐部分の横
断面図、第３図は従来の熱収縮性被覆物の使用状態を示
す斜視図、填４図は箪３図の■−■線（：沿う矢視図で
ある。
２・・・・・・熱収縮体、３・・・・・・リブ、５・・
・・・・主ケーブル、６・・・・・・分岐ケーブル、７
・・・・・・接続部、８・・・・・・ケーブル接続用熱
収縮性被覆物％９・・・・・・熱融着層％Ａ。
Ｂ・・・・・・合わせ目％Ｓ・・・・・・空隙。
＼、１．−
第２図
第４図Figure aE1 and Figure 2 show one embodiment of the present invention, Figure 1 is a perspective view, Figure 2 is a cross-sectional view of the branch part in use, and Figure 3 is a diagram of a conventional heat-shrinkable covering. A perspective view showing the state of use, Figure 4 is a view taken along the line ■-■ of Figure 3. 2...Heat shrinkable body, 3...Rib, 5...・
...Main cable, 6...Branch cable, 7
. . . Connection portion, 8 . . . Heat shrinkable coating for cable connection % 9 . . . Heat sealing layer % A. B...Seam %S...Gap. \, 1. - Figure 2 Figure 4
Claims (1)
をなす熱収縮体（２）の内面に熱融着層（９）を設けて
なり、この熱融着層は、エチレン・α−オレフィン共重
合体に不飽和ジカルボン酸、またはその無水物をグラフ
トした熱可塑性エラストマーを主体とする組成物で構成
されることを特徴とするケーブル接続用熱収縮性被覆物
。A heat-sealable layer (9) is provided on the inner surface of a heat-shrinkable body (2) that has heat-shrinkability and is in the form of a sheet or tube. 1. A heat-shrinkable coating for cable connections, characterized in that it is composed of a composition mainly composed of a thermoplastic elastomer grafted with an unsaturated dicarboxylic acid or its anhydride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59203665A JPS6185007A (en) | 1984-09-28 | 1984-09-28 | Heat-shrinkable coated material for connecting cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59203665A JPS6185007A (en) | 1984-09-28 | 1984-09-28 | Heat-shrinkable coated material for connecting cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6185007A true JPS6185007A (en) | 1986-04-30 |
| JPH0559646B2 JPH0559646B2 (en) | 1993-08-31 |
Family
ID=16477820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59203665A Granted JPS6185007A (en) | 1984-09-28 | 1984-09-28 | Heat-shrinkable coated material for connecting cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6185007A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6419684A (en) * | 1987-07-14 | 1989-01-23 | Three Bond Co Ltd | Material and method for covering conductor joint |
| JPH01157001A (en) * | 1987-12-14 | 1989-06-20 | Mitsubishi Cable Ind Ltd | Aviation obstacle light for transmission tower |
| JP2005252222A (en) * | 2004-02-03 | 2005-09-15 | Matsushita Electric Ind Co Ltd | Semiconductor light-emitting device, lighting module, lighting device, display device, and method of manufacturing semiconductor light-emitting device |
| JP2006344772A (en) * | 2005-06-09 | 2006-12-21 | Hitachi Aic Inc | Led device and manufacturing method thereof |
| WO2020026682A1 (en) * | 2018-08-02 | 2020-02-06 | 住友電工ファインポリマー株式会社 | Heat-shrinkable tube, heat-shrinkable sheet, connecting body, and heat-shrinkable tube manufacturing method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56123823A (en) * | 1980-03-05 | 1981-09-29 | Sumitomo Electric Ind Ltd | Mterials with thermal re |
-
1984
- 1984-09-28 JP JP59203665A patent/JPS6185007A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56123823A (en) * | 1980-03-05 | 1981-09-29 | Sumitomo Electric Ind Ltd | Mterials with thermal re |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6419684A (en) * | 1987-07-14 | 1989-01-23 | Three Bond Co Ltd | Material and method for covering conductor joint |
| JPH01157001A (en) * | 1987-12-14 | 1989-06-20 | Mitsubishi Cable Ind Ltd | Aviation obstacle light for transmission tower |
| JP2005252222A (en) * | 2004-02-03 | 2005-09-15 | Matsushita Electric Ind Co Ltd | Semiconductor light-emitting device, lighting module, lighting device, display device, and method of manufacturing semiconductor light-emitting device |
| JP2006344772A (en) * | 2005-06-09 | 2006-12-21 | Hitachi Aic Inc | Led device and manufacturing method thereof |
| WO2020026682A1 (en) * | 2018-08-02 | 2020-02-06 | 住友電工ファインポリマー株式会社 | Heat-shrinkable tube, heat-shrinkable sheet, connecting body, and heat-shrinkable tube manufacturing method |
| CN112470356A (en) * | 2018-08-02 | 2021-03-09 | 住友电工超效能高分子股份有限公司 | Heat-shrinkable tube, heat-shrinkable sheet, connector, and method for producing heat-shrinkable tube |
| JPWO2020026682A1 (en) * | 2018-08-02 | 2021-08-19 | 住友電工ファインポリマー株式会社 | Method for manufacturing heat-shrinkable tube, heat-shrinkable sheet, connector and heat-shrinkable tube |
| EP3832821A4 (en) * | 2018-08-02 | 2021-08-25 | Sumitomo Electric Fine Polymer, Inc. | Heat-shrinkable tube, heat-shrinkable sheet, connecting body, and heat-shrinkable tube manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0559646B2 (en) | 1993-08-31 |
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