JPS602911Y2 - heat shrinkable covering material - Google Patents
heat shrinkable covering materialInfo
- Publication number
- JPS602911Y2 JPS602911Y2 JP4003480U JP4003480U JPS602911Y2 JP S602911 Y2 JPS602911 Y2 JP S602911Y2 JP 4003480 U JP4003480 U JP 4003480U JP 4003480 U JP4003480 U JP 4003480U JP S602911 Y2 JPS602911 Y2 JP S602911Y2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- shrinkable
- sheet
- covering material
- cylindrical protrusion
- 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
Landscapes
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【考案の詳細な説明】
本考案はパイプ又は電線等の分岐接続部の防食、絶縁被
覆等に使用する熱収縮性被覆材の改良に関するものであ
る。[Detailed Description of the Invention] The present invention relates to an improvement of a heat-shrinkable coating material used for corrosion protection, insulation coating, etc. of branch connections of pipes or electric wires.
パイプ等の防食被覆に熱収縮性シートを使用することは
公知であるが、パイプ等の分岐接続部においては、その
形状であるため、一枚の熱収縮性シートで防食被覆する
ことは至難である。It is well known that heat-shrinkable sheets are used for anti-corrosion coating of pipes, etc. However, due to the shape of branch connections of pipes, it is extremely difficult to provide anti-corrosion coating with a single heat-shrinkable sheet. be.
このため、本出願人は、第１図に示すように、熱収縮性
シート１に絞り加工により筒状突出部２′を成形し、こ
のシート１′の筒状突出部２′を、第２図に示すように
、例えば分岐短管Ｂ′を有する本管Ｐ′の分岐短管Ｂ′
に挿通し、該シート１′を本管Ｐ′の囲りにパッチ材３
′を使用してスリーブ状に形威し、而るのちに、シート
全体を熱収縮させることを既に提案ずみである（実用新
案登録出願昭５４−１３４２３８号）。For this reason, as shown in FIG. As shown in the figure, for example, a branch short pipe B' of a main pipe P' having a branch short pipe B'
Patch material 3 is inserted around the main pipe P' with the sheet 1'.
It has already been proposed that the sheet be formed into a sleeve shape using 100% polyurethane, and then the entire sheet can be heat-shrinked (Utility Model Registration Application No. 134238-1982).
しかしながら、上記のシート１′においては、筒状部２
′が長さ方向に熱収縮し、しかも、その熱収縮率が、絞
り加工時での不可避的な延伸のために増化しているから
、筒状部２′が加熱時に顕著に短尺化するといった不具
合がある。However, in the above sheet 1', the cylindrical portion 2
' is heat-shrinked in the length direction, and the heat shrinkage rate is increased due to the unavoidable stretching during the drawing process, so that the cylindrical part 2' becomes noticeably shorter when heated. There is a problem.
更１こ、筒状部２′の薄肉化も避けられない。Furthermore, thinning of the cylindrical portion 2' is also unavoidable.
このため、筒状部２′に対しては、テーピング等により
付加的に防食被覆を行う必要性があり、熱収縮性シート
を使用することの意義が半減してしまう。Therefore, it is necessary to additionally apply anti-corrosion coating to the cylindrical portion 2' by taping or the like, which reduces the significance of using the heat-shrinkable sheet by half.
本考案に係る熱収縮性被覆材は、上述の点に鑑みて案出
されたものであり、熱収縮性シートに絞り加工により筒
状突出部を成形し、該筒状突出部に熱収縮性チューブを
結着したことを特徴とする構成である。The heat-shrinkable covering material according to the present invention was devised in view of the above points, and a cylindrical protrusion is formed on a heat-shrinkable sheet by drawing, and the heat-shrinkable This structure is characterized by having tubes tied together.
以下、図面により本考案を説明する。The present invention will be explained below with reference to the drawings.
第３図において、１は熱収縮性シートであり、筒状突出
部２が成形されている。In FIG. 3, 1 is a heat-shrinkable sheet on which a cylindrical protrusion 2 is formed.
この筒状突出部２の成形には、絞り加工を用いることが
できる。The cylindrical protrusion 2 can be formed by drawing.
３は熱収縮性チューブであり、その一端３１が上記筒状
突出部２に結着されている。3 is a heat-shrinkable tube, one end 31 of which is tied to the cylindrical protrusion 2 .
この場合、熱収縮性シートの筒状突出部並びに熱収縮性
チューブをコアに挿通し、筒状突出部に熱収縮性チュー
ブの端部を重畳させ、この重畳部を熱融着させることが
できる。In this case, the cylindrical protrusion of the heat-shrinkable sheet and the heat-shrinkable tube can be inserted into the core, the end of the heat-shrinkable tube can be overlapped with the cylindrical protrusion, and this overlapped part can be heat-sealed. .
熱融着の代りに耐熱性接着剤を使用することも可能であ
る。It is also possible to use a heat-resistant adhesive instead of heat-sealing.
上記の結着は、第４図に示すように熱収縮性チューブ３
の端部３１を筒状突出部２の内周面に重畳させた状態で
行うこともできる。The above binding is performed by attaching the heat-shrinkable tube 3 as shown in FIG.
This can also be carried out with the end 31 of the cylindrical protrusion 2 superimposed on the inner circumferential surface of the cylindrical protrusion 2.
更に、第５図に示すように、熱収縮性チューブ３を二重
にすることも可能である。Furthermore, as shown in FIG. 5, it is also possible to make the heat-shrinkable tube 3 double.
本考案において、熱収縮性チューブ３並びにシ−ト１に
は、第６図に示すように、被覆内側面となる面に、接着
剤層４を設けることができ、この接着剤層には、感圧性
接着剤、ホットメルト型接着剤、自己融着性接着剤、マ
スチック剤等を使用できる。In the present invention, the heat-shrinkable tube 3 and the sheet 1 can be provided with an adhesive layer 4 on the inner surface of the coating, as shown in FIG. Pressure sensitive adhesives, hot melt adhesives, self-fusing adhesives, mastics, etc. can be used.
又、この接着剤層は、目的に応じ、点在状、筋状、網目
状等にすることもできる。Further, this adhesive layer can be formed into a dotted, streaked, meshed, etc. shape depending on the purpose.
本考案において、熱収縮性シート１並びにチューブ３に
は、ポリエチレン、ポリプロピレン、ポリ塩化ビニル、
エチレン−酢酸ビニル共重合体、フッ素樹脂等の熱可塑
性プラスチック、天然ゴム、シリコーンゴム、ブチルゴ
ム、エチレン−プロピレン共重合体のゴム或いはこれら
の混合物に所望により老化防止剤、充填剤、着色剤等の
添加剤を適量配合したものを、シート状又はチューブ状
に底形し、これを延伸処理したものを用いることができ
る。In the present invention, the heat-shrinkable sheet 1 and tube 3 include polyethylene, polypropylene, polyvinyl chloride,
Thermoplastic plastics such as ethylene-vinyl acetate copolymer, fluororesin, natural rubber, silicone rubber, butyl rubber, ethylene-propylene copolymer rubber, or mixtures thereof may optionally contain antiaging agents, fillers, colorants, etc. It is possible to use a material containing an appropriate amount of additives, shaped into a sheet or tube, and then stretched.
なお、前記プラスチック或いはゴムが架橋されてもよい
。Note that the plastic or rubber may be crosslinked.
本考案に係る被覆材を用いて、対象物、例えば、第７図
に示すような本管Ｐに分岐管Ｂを連結したＴ字状の鋼管
を被覆するには、第７図に示すように、分岐管Ｂに被覆
材の熱収縮性チューブ３を挿通し、次いで、本管Ｐ上に
おいて、熱収縮性シート１の末端同志を重ね合せ、この
重ね合せ部をパッチ材（例えば、ホットメルト接着シー
ト）５で結合する。In order to coat an object, for example, a T-shaped steel pipe in which a branch pipe B is connected to a main pipe P as shown in Fig. 7, using the coating material according to the present invention, as shown in Fig. 7, , insert the heat-shrinkable tube 3 of the covering material into the branch pipe B, then overlap the ends of the heat-shrinkable sheet 1 on the main pipe P, and apply a patch material (for example, hot-melt adhesive) to this overlapped part. Sheet) Join with 5.
その後は、被覆材をバーナー等で加熱すればよい。After that, the covering material may be heated with a burner or the like.
上記において、パッチ材に代え、第８図に示すように、
熱収縮性シート１の片端のみに接着剤層６を予め設けて
おくこともできる。In the above, instead of the patch material, as shown in FIG.
It is also possible to provide the adhesive layer 6 in advance only on one end of the heat-shrinkable sheet 1.
又、パッチ材、接着剤層に代え、熱収縮性シートの末端
にファスナー等の機械的固定具を取付けておくこともで
きる。Furthermore, instead of the patch material or adhesive layer, a mechanical fastener such as a fastener may be attached to the end of the heat-shrinkable sheet.
上記パッチ材、接着剤層、又はファスナー等は、熱収縮
性シート１に第６図に示すように、感圧性接着剤、自己
融着性接着剤等の接着剤層４が設けられている場合、省
略できることもある。The above-mentioned patch material, adhesive layer, fastener, etc. is when the heat-shrinkable sheet 1 is provided with an adhesive layer 4 such as a pressure-sensitive adhesive or a self-fusing adhesive, as shown in FIG. , can sometimes be omitted.
本考案において、被覆対象物によっては、第９図に示す
ように、熱収縮性チューブ３の本数を複数本とすること
もできる。In the present invention, depending on the object to be covered, a plurality of heat-shrinkable tubes 3 may be used, as shown in FIG. 9.
又、熱収縮性チューブには、先端閉塞のものを用いるこ
ともできる。Further, a heat-shrinkable tube with a closed end can also be used.
本考案に係る熱収縮性被覆材は上述した通りの構成であ
り、熱収縮性シートの絞り加工による筒状突出部の高さ
を充分に小さくでき、その突出部の熱収縮時での短縮量
を僅少にできるから、その突出部と熱収縮性チューブと
の接合部に、に前記熱収縮の時に作用するせん断応力を
小にできる。The heat-shrinkable covering material according to the present invention has the above-mentioned configuration, and the height of the cylindrical protrusion can be sufficiently reduced by drawing the heat-shrinkable sheet, and the amount of shortening of the protrusion during heat shrinkage can be reduced. Since this can be minimized, the shear stress that acts on the joint between the protrusion and the heat-shrinkable tube during the heat-shrinkage can be reduced.
従って、接合部の剥離を防止できる。Therefore, peeling of the bonded portion can be prevented.
勿論、熱収縮性チューブの長さ方向に対する熱収縮率が
小さいから、第１図に示した熱収縮性被覆材とは異なり
、分岐管に対して被覆不足も排除できる。Of course, since the heat shrinkage coefficient in the longitudinal direction of the heat shrinkable tube is small, unlike the heat shrinkable covering material shown in FIG. 1, insufficient coverage of the branch pipe can be avoided.
更に、接合部が上記突出部と熱収縮性チューブとの間の
一箇所のみであるから、シール上も有利である。Furthermore, since there is only one joint between the protrusion and the heat-shrinkable tube, it is also advantageous in terms of sealing.
第１図は本出願人が既に提案した被覆材を示す説明図、
第２図は第１図の被覆材の使用状態を示す説明図、第３
図、第４図、第５図並びに第６図は本考案の実施例をそ
れぞれ示す説明図、第７図は本考案に係る被覆材の使用
状態を示す説明図、第８図並びに第９図は本考案の別実
施例それぞれ示す説明図である。
図において、１は熱収縮性シート、２は筒状突出部、３
は熱収縮性チューブである。FIG. 1 is an explanatory diagram showing a covering material already proposed by the applicant;
Figure 2 is an explanatory diagram showing how the covering material in Figure 1 is used;
Figures 4, 5, and 6 are explanatory diagrams showing embodiments of the present invention, respectively. Figure 7 is an explanatory diagram showing how the covering material according to the present invention is used, and Figures 8 and 9. 2A and 2B are explanatory diagrams each showing another embodiment of the present invention. In the figure, 1 is a heat-shrinkable sheet, 2 is a cylindrical protrusion, and 3 is a heat-shrinkable sheet.
is heat shrinkable tubing.
Claims (1)
該筒状突出部に熱収縮性チューブを結着したことを特徴
とする熱収縮性被覆材。A cylindrical protrusion is formed on the bottom of the heat-shrinkable sheet by drawing.
A heat-shrinkable covering material characterized in that a heat-shrinkable tube is bound to the cylindrical protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4003480U JPS602911Y2 (en) | 1980-03-25 | 1980-03-25 | heat shrinkable covering material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4003480U JPS602911Y2 (en) | 1980-03-25 | 1980-03-25 | heat shrinkable covering material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56140411U JPS56140411U (en) | 1981-10-23 |
| JPS602911Y2 true JPS602911Y2 (en) | 1985-01-26 |
Family
ID=29635462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4003480U Expired JPS602911Y2 (en) | 1980-03-25 | 1980-03-25 | heat shrinkable covering material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS602911Y2 (en) |
-
1980
- 1980-03-25 JP JP4003480U patent/JPS602911Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56140411U (en) | 1981-10-23 |
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