JPS6139196Y2 - - Google Patents
Info
- Publication number
- JPS6139196Y2 JPS6139196Y2 JP7374480U JP7374480U JPS6139196Y2 JP S6139196 Y2 JPS6139196 Y2 JP S6139196Y2 JP 7374480 U JP7374480 U JP 7374480U JP 7374480 U JP7374480 U JP 7374480U JP S6139196 Y2 JPS6139196 Y2 JP S6139196Y2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- tubular member
- shrinkable tubular
- base material
- shrinkable
- 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.)
- Expired
Links
- 239000000463 material Substances 0.000 claims description 13
- 239000012790 adhesive layer Substances 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 239000011247 coating layer Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Landscapes
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【考案の詳細な説明】
本考案は熱収縮時に捩り力を生ずるようにした
熱収縮性管状部材に関するものである。[Detailed Description of the Invention] The present invention relates to a heat-shrinkable tubular member that generates torsional force during heat-shrinking.
従来、電線の導体接続部、鋼管接続部及び端末
等を防水並に縁絶処理を行う場合に、粘着テープ
或は粘着シート等を捲回して行つていたものであ
る。しかしこのようなテープまたはシートなどを
用いる被覆作業は高度の熟練を要し、しかも多大
な作業時間を要するため忌避され、近年は専ら熱
収縮性管状基材の内面に接着部層を設けて熱収縮
性管状部材を使用し、該管状部材を接続部等に挿
着させ、加熱熱収縮により密着せしめて被覆層を
形成する方法が広く実施されるようになつた。 Conventionally, when waterproofing and insulating the conductor connections, steel pipe connections, terminals, etc. of electric wires, adhesive tapes, adhesive sheets, etc. have been wound around them. However, coating work using such tapes or sheets requires a high degree of skill and takes a lot of time, so it is avoided. A method has become widely practiced in which a shrinkable tubular member is used, the tubular member is inserted into a connecting portion, etc., and the tubular member is brought into close contact with the connector by heating and heat shrinking to form a coating layer.
然しながらこの熱収縮性管状部材による方法で
は例えば鋼管及び電線等の接続部などの不定形ギ
ヤツプ例えば熔接ビード、撚り線の間隙部等に接
着剤を十分に含浸せしめることが出来難く、その
ため形成された被覆層内部に空気を巻き込むとい
う現象を生じ易いため、優れた防食性、水密性並
に絶縁性を保持することが難かしいものであつ
た。 However, with this method using heat-shrinkable tubular members, it is difficult to sufficiently impregnate adhesive into irregularly shaped gaps such as joints between steel pipes and electric wires, such as weld beads, gaps between stranded wires, etc. Since air is easily trapped inside the coating layer, it has been difficult to maintain excellent corrosion resistance, watertightness, and insulation properties.
本考案はかかる欠点を改善せんとして鋭意研究
を行つた結果、熱収縮性管状基材の内面に接着剤
層を設けた熱収縮性管状部材において、、予め該
管状基材に強力な捩り力を内在せしめることによ
り接着剤を被処理体に十分含浸せしめうる熱収縮
性管状部材を案出したものである。即ち本考案は
熱収縮性管状基材の内面に接着剤層を設けた熱収
縮性管状部材において、該管状基材が加熱収縮す
るに際し、その両端部が円周方向に沿つて互に逆
方向への捩り運動を起す如き捩り力を内在させた
ことを特徴とするものである。 As a result of intensive research aimed at improving these drawbacks, the present invention is based on a heat-shrinkable tubular member in which an adhesive layer is provided on the inner surface of a heat-shrinkable tubular base material, and a strong torsional force is applied to the tubular base material in advance. The present invention has devised a heat-shrinkable tubular member that can be sufficiently impregnated with an adhesive into an object to be treated by allowing the adhesive to be incorporated therein. That is, the present invention provides a heat-shrinkable tubular member in which an adhesive layer is provided on the inner surface of a heat-shrinkable tubular base material. It is characterized by having an internal torsional force that causes a torsional movement.
本考案の１例を図面にもとづき詳細に説明す
る。 An example of the present invention will be explained in detail based on the drawings.
第１図において１は本考案熱収縮性管状部材を
示すものであり、熱収縮性管状基材２は例えばポ
リエチレン、ポリ塩化ビニル、架橋ポリエチレン
等の熱可塑性樹脂からなる熱回復性材料にて構成
した管状体で、その内面に例えばポリ酢酸ビニ
ル、ポリアミド、アスフアルト等の如く該基材に
悪影響を及ぼすことなく且つ熱収縮する際に十分
軟化しうる接着剤層３を薄層に設けているもので
ある。 In FIG. 1, numeral 1 indicates the heat-shrinkable tubular member of the present invention, and the heat-shrinkable tubular base material 2 is made of a heat-recoverable material made of thermoplastic resin such as polyethylene, polyvinyl chloride, cross-linked polyethylene, etc. A tubular body having a thin adhesive layer 3 on its inner surface, such as polyvinyl acetate, polyamide, asphalt, etc., which does not have an adverse effect on the base material and can be sufficiently softened during heat shrinkage. It is.
なお上記接着剤には粘着付与剤、軟化剤等を配
合してもよい。 Note that the above adhesive may contain a tackifier, a softener, etc.
又該熱収縮性管状基材２にはその両端が夫々矢
印にて示した如く互に逆方向への捩り運動を起す
如き捩り力が付与されており、従つて、加熱収縮
時に該管状基材は円周方向に収縮すると共に予め
付与された捩り力の復元力により絞り作用が働
き、これにより内在する空気等を絞り出すと共に
被着体上に接着剤を緊密に接着させる作用を果す
ものである。 Further, the heat-shrinkable tubular base material 2 is applied with a torsional force such that both ends of the base material 2 undergo twisting motion in opposite directions as shown by arrows, so that the heat-shrinkable tubular base material 2 is As the adhesive contracts in the circumferential direction, a squeezing action occurs due to the restoring force of the torsional force applied in advance, thereby squeezing out the internal air, etc., and also working to tightly adhere the adhesive to the adherend. .
なお上記管状基材の両端に付与せしめる捩り力
の角度については通常30゜〜120゜程度にするこ
とが望ましい。 The angle of the torsion force applied to both ends of the tubular base material is preferably approximately 30° to 120°.
次に本考案熱収縮性管状部材の一実施例につい
て説明する。 Next, an embodiment of the heat-shrinkable tubular member of the present invention will be described.
内径20mm、長さ50mmの架橋ポリエチレンよりな
る熱収縮性管状基材２の内面にポリアミドベース
の接着剤層３（ヘンケル日本、バーサロン１１
２）を厚さ１mmに設けた熱収縮性管状部材１を、
予め表面を離型処理した直径16mmのマントレル
（図示せず）にかぶせ150℃において加熱収縮させ
ながら該管状部材１の両端をマンドレルの円周方
向に沿つて逆方向に夫々90゜捩り、この状態にて
冷却させた該マンドレルを抜取つて第３図に示す
如く本考案熱収縮性管状部材をえた。 A polyamide-based adhesive layer 3 (Henkel Japan, Barsalon 11
2) with a thickness of 1 mm,
While heating and shrinking the tubular member 1 at 150° C. by placing it over a mantrell (not shown) with a diameter of 16 mm whose surface has been previously subjected to mold release treatment, both ends of the tubular member 1 were twisted by 90° in opposite directions along the circumferential direction of the mandrel. The cooled mandrel was removed to obtain a heat-shrinkable tubular member of the present invention as shown in FIG.
なお本考案管状部材と比較するために上記の捩
りを付与せしめることなくして同一構造の熱収縮
性管状部材をえた。 For comparison with the tubular member of the present invention, a heat-shrinkable tubular member of the same structure was obtained without the above-mentioned twist.
而して作つた本考案管状部材と比較例管状部材
とについて被覆後の水密性を測定するために第２
図に示す如く夫々外径14mmのケーブル導体４の外
側にかぶせ、これを第３図に示す如く熱収縮して
冷却せしめた後、軸方向に切断して接着剤層の線
間への流れ込み状態及び空隙部の有無を試験し
た。その結果本考案管状部材は接着剤の流れが極
めて良好であり空隙部は全く見られなかつた。こ
れに対し比較例管状部材のものは接着剤の流れ込
みが悪く、空隙部が多少見られた。 In order to measure the watertightness of the tubular member of the present invention and the comparative tubular member produced in this way after coating, a second test was carried out.
As shown in the figure, each cable conductor 4 with an outer diameter of 14 mm is covered with the outside, and after being heat-shrinked and cooled as shown in Figure 3, it is cut in the axial direction and the adhesive layer is flowed between the wires. And the presence or absence of voids was tested. As a result, in the tubular member of the present invention, the adhesive flow was extremely good and no voids were observed. On the other hand, in the tubular member of the comparative example, the adhesive did not flow well and some voids were observed.
以上詳述した如く本考案の熱収縮性管状部材は
ケーブルなどの接続部等に適用するに際し、ケー
ブルに不定形部分があるとしても極めてよく密着
するため優れた水密性、防食性並びに絶縁性を保
持した被覆層を形成できる等顕著な効果を有す
る。 As detailed above, when the heat-shrinkable tubular member of the present invention is applied to the connection parts of cables, etc., it adheres extremely well even if the cable has irregularly shaped parts, so it has excellent watertightness, corrosion resistance, and insulation properties. It has remarkable effects such as being able to form a retained coating layer.
第１図は本考案熱収縮性管状部材の１例を示す
斜視図、第２図は本考案熱収縮性管状部材をケー
ブルの外側に包被し状態の断面図、第３図は第２
図における本考案熱収縮性管状部材が熱収縮して
ケーブルに密着した状態の断面図である。
１……熱収縮性管状部材、２……熱収縮性管状
基材、３……接着剤層、４……ケーブル導体。
Fig. 1 is a perspective view showing an example of the heat-shrinkable tubular member of the present invention, Fig. 2 is a cross-sectional view of the heat-shrinkable tubular member of the present invention wrapped around the outside of a cable, and Fig. 3 is a cross-sectional view of the heat-shrinkable tubular member of the present invention.
FIG. 2 is a cross-sectional view of the heat-shrinkable tubular member of the present invention in a state in which it is heat-shrinked and tightly attached to a cable; DESCRIPTION OF SYMBOLS 1... Heat-shrinkable tubular member, 2... Heat-shrinkable tubular base material, 3... Adhesive layer, 4... Cable conductor.
Claims (1)
収縮性管状部材において、該管状基材に予め加熱
収縮するに際し、その両端部が円周方向に沿つて
互に逆方向への捩り運動を起す如き捩り力を内在
させたことを特徴とする熱収縮性管状部材。 In a heat-shrinkable tubular member in which an adhesive layer is provided on the inner surface of a heat-shrinkable tubular base material, when the tubular base material is heat-shrinked in advance, both ends thereof are twisted in mutually opposite directions along the circumferential direction. A heat-shrinkable tubular member characterized by having an internal torsional force that causes movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7374480U JPS6139196Y2 (en) | 1980-05-28 | 1980-05-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7374480U JPS6139196Y2 (en) | 1980-05-28 | 1980-05-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56174785U JPS56174785U (en) | 1981-12-23 |
| JPS6139196Y2 true JPS6139196Y2 (en) | 1986-11-11 |
Family
ID=29436507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7374480U Expired JPS6139196Y2 (en) | 1980-05-28 | 1980-05-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6139196Y2 (en) |
-
1980
- 1980-05-28 JP JP7374480U patent/JPS6139196Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56174785U (en) | 1981-12-23 |
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