JPS6039251Y2 - heat expandable article - Google Patents
heat expandable articleInfo
- Publication number
- JPS6039251Y2 JPS6039251Y2 JP12085284U JP12085284U JPS6039251Y2 JP S6039251 Y2 JPS6039251 Y2 JP S6039251Y2 JP 12085284 U JP12085284 U JP 12085284U JP 12085284 U JP12085284 U JP 12085284U JP S6039251 Y2 JPS6039251 Y2 JP S6039251Y2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- expandable
- article
- thermal expansion
- thermally expandable
- 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
- Lining Or Joining Of Plastics Or The Like (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Description
【考案の詳細な説明】 本考案は熱拡大性物品の改良に関するものである。[Detailed explanation of the idea] The present invention relates to improvements in thermally expandable articles.
熱拡大性物品は鋼管の内面ライニング用等に用いられて
いる。Heat-expandable articles are used for inner lining of steel pipes, etc.
而して、従来の熱拡大性チューブを用いて鋼管の内面ラ
イニングを行なうには、チューブの熱拡大による被覆層
と鋼管内周面の間へのエアー残存防止のために、チュー
ブを鋼管内に配置せしめた後、該チューブの中央部を先
ず熱拡大させ、次いでチューブ両端部に向って熱拡大作
業を進めるか或いはチューブの片端部から他端部に向っ
て熱拡大作業を進めるのが望ましい。Therefore, when lining the inner surface of a steel pipe using a conventional thermally expandable tube, the tube must be placed inside the steel pipe to prevent air from remaining between the coating layer and the inner circumferential surface of the steel pipe due to thermal expansion of the tube. After placement, it is desirable to first thermally expand the central portion of the tube, and then proceed toward both ends of the tube, or proceed from one end of the tube to the other.
ところが、この従来品は加熱された場合には、全体がほ
ぼ同時に熱拡大するので、上記手順どうりに熱拡大作業
を進めるのが困難で、被覆層と鋼管内周面の間へのエア
ー残存現象をしばしば生じている。However, when this conventional product is heated, the entire surface undergoes thermal expansion almost simultaneously, making it difficult to proceed with the thermal expansion process according to the above procedure, resulting in air remaining between the coating layer and the inner circumferential surface of the steel pipe. The phenomenon often occurs.
熱拡大性チューブによる被覆層と鋼管内周面の間にエア
ーが残存していると、エアー残存部においては鋼管内周
面と被覆層とが接着していないため、外力により被覆層
が破損し易いばかりでなく、この部分を起点として被覆
層の剥離を生ずることもある。If air remains between the coating layer made of heat-expandable tube and the inner circumferential surface of the steel pipe, the inner circumferential surface of the steel pipe and the coating layer are not bonded in the area where the air remains, so the coating layer may be damaged by external force. Not only is this easy, but the coating layer may peel off starting from this area.
本考案は上記従来品の有する問題を解決した熱拡大性物
品に係り、熱拡大温度の異なる熱拡大性部材同志が連結
されて成るものである。The present invention relates to a thermally expandable article that solves the problems of the conventional products described above, and is constructed by connecting thermally expandable members having different thermal expansion temperatures.
本考案において用いられる熱拡大性部材は、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等のゴム或いはこれらの混合物の所
望により老化防止剤、充填剤、着色剤等の添加剤を適量
配合して成るものであり、例えばこれらの成分を均一に
混合してチューブ状等に成形した後必要に応じて架橋し
、次いで特公昭29−2844号公報、特公昭32−8
435号公報に記載された方法により、該成形品に熱拡
大性を付与して得られる。Thermal expandable members used in the present invention include thermoplastics such as polyethylene, polypropylene, polyvinyl chloride, ethylene-vinyl acetate copolymer, and fluororesin, natural rubber, silicone rubber, butyl rubber, and ethylene-vinyl acetate copolymer.
It is made of rubber such as propylene copolymer or a mixture thereof, mixed with appropriate amounts of additives such as anti-aging agents, fillers, colorants, etc., as desired.For example, these components are mixed uniformly and made into a tube shape, etc. After molding, it is crosslinked if necessary, and then
It is obtained by imparting thermal expandability to the molded article by the method described in Japanese Patent No. 435.
本考案の熱拡大性物品は熱拡大温度の異なる熱拡大性部
材同志を連結したものであって、隣接する部材の熱拡大
温度の差は通常約5〜150°C好ましくは約10〜5
0℃に設定する。The heat-expandable article of the present invention is made by connecting heat-expandable members having different heat-expanding temperatures, and the difference in heat-expanding temperature between adjacent members is usually about 5 to 150°C, preferably about 10 to 50°C.
Set to 0℃.
以下、図面により本考案の実例を説明する。Hereinafter, examples of the present invention will be explained with reference to the drawings.
第1図に示すチューブ状の熱拡大性物品は熱拡大温度の
異なる熱拡大性部材1,2から戊る。The tubular thermally expandable article shown in FIG. 1 is made from thermally expandable members 1 and 2 having different thermal expansion temperatures.
3は熱拡大性物品の外周面に設けられた感圧性接着剤、
ホットメルト接着剤、マスチイツク剤等から成る接着剤
層である。3 is a pressure-sensitive adhesive provided on the outer peripheral surface of the heat-expandable article;
This is an adhesive layer made of hot melt adhesive, mastic agent, etc.
この熱拡大性物品は異なる温度で各々径方向に熱縮小せ
しめた2個のチューブの端部同志を熱融着せしめる方法
等によって得ることができる。This heat-expandable article can be obtained by, for example, a method of heat-sealing the ends of two tubes that have been thermally shrunk in the radial direction at different temperatures.
上記第1図に示す熱拡大性物品は熱拡大性部材1と2の
熱拡大温度が異なるので、これを鋼管内に配置せしめ、
バーナー等で加熱した場合には、熱拡大温度の低い部分
が先ず熱拡大し、次いで熱拡大温度の高い部分が熱拡大
するので、熱拡大性物品による被覆層と鋼管内周面の間
にエアーが残存することはなく、満足な被覆層が形成で
きる。In the thermally expandable article shown in FIG. 1 above, since the thermally expandable members 1 and 2 have different thermal expansion temperatures, they are placed inside a steel pipe,
When heated with a burner, etc., the area with a low thermal expansion temperature expands first, and then the area with a high thermal expansion temperature expands, so air is created between the coating layer made of the thermal expandable article and the inner peripheral surface of the steel pipe. No residue remains, and a satisfactory coating layer can be formed.
第2図は他の実例を示し、中央部が熱拡大温度の低い熱
拡大性部材4から戊り、その両側に熱拡大温度が前記熱
拡大性部材4よりも高く且つ双方の熱拡大温度がほぼ等
しい熱拡大性部材5および6が連結されている。FIG. 2 shows another example in which the center part is cut out from the heat expandable member 4 having a low heat expansion temperature, and the heat expansion temperature of both sides is higher than that of the heat expandable member 4, and the heat expansion temperature of both is Approximately equal thermally expandable members 5 and 6 are connected.
この熱拡大性物品により鋼管内周面を被覆するに際して
は、これを鋼管内に配置せしめ、バーナー等で加熱する
と、熱拡大温度の低い中央部の熱拡大性部材4が先ず熱
拡大し、次いで両端の熱拡大性部材5および6がほぼ同
時に熱拡大するので、エアーの残存は生じない。When covering the inner circumferential surface of a steel pipe with this heat-expandable article, it is placed inside the steel pipe and heated with a burner, etc., so that the heat-expandable member 4 in the center, which has a lower thermal expansion temperature, first expands thermally, and then Since the thermally expandable members 5 and 6 at both ends thermally expand almost simultaneously, no air remains.
なお、第2図に示す実例においては熱拡大性物品の両端
部を構成する熱拡大性部材5および6の熱拡大温度をほ
ぼ等しくしたが、該両部材5および6の熱拡大温度に差
を持たしめてもよい。Note that in the example shown in FIG. 2, the thermal expansion temperatures of the thermally expandable members 5 and 6 constituting both ends of the thermally expandable article are approximately equal; You can keep it.
更に、一端部から他端部に向って熱拡大温度が順次高く
なるように設定することもできる。Furthermore, it is also possible to set the thermal expansion temperature to increase successively from one end toward the other end.
本考案は上記のように構成されており、熱拡大温度の異
なる熱拡大性部材が連結され、熱拡大温度の低い熱拡大
性部材から順次前拡大させるものであるので、被覆層と
被覆対象物品表面間へのエアーの残存を防止できる。The present invention is constructed as described above, in which heat-expandable members having different heat-expansion temperatures are connected, and the heat-expandable members with lower heat-expansion temperatures are sequentially expanded. Air can be prevented from remaining between surfaces.
第1図および第2図はいずれも本考案に係る熱拡大性物
品の実例を示す斜視図である。
1、 2.4. 5.6・・・・・・熱拡大性部材、3
・・・・・・接着剤層。FIG. 1 and FIG. 2 are both perspective views showing examples of the thermally expandable article according to the present invention. 1, 2.4. 5.6...Thermal expandable member, 3
...Adhesive layer.
Claims (1)
熱拡大性物品。A thermally expandable article formed by connecting thermally expandable members having different thermal expansion temperatures.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12085284U JPS6039251Y2 (en) | 1984-08-06 | 1984-08-06 | heat expandable article |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12085284U JPS6039251Y2 (en) | 1984-08-06 | 1984-08-06 | heat expandable article |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6053530U JPS6053530U (en) | 1985-04-15 |
JPS6039251Y2 true JPS6039251Y2 (en) | 1985-11-25 |
Family
ID=30276817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12085284U Expired JPS6039251Y2 (en) | 1984-08-06 | 1984-08-06 | heat expandable article |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6039251Y2 (en) |
-
1984
- 1984-08-06 JP JP12085284U patent/JPS6039251Y2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6053530U (en) | 1985-04-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4070044A (en) | Polymer pipe connection and method to make it | |
JPH0135452B2 (en) | ||
JP2509270B2 (en) | How to connect the tube | |
US4650703A (en) | Recoverable article and method | |
JPS63297030A (en) | Manufacture of lined hume pipe | |
JPS6039251Y2 (en) | heat expandable article | |
JPS608980Y2 (en) | heat shrinkable articles | |
JPS5852098Y2 (en) | heat recoverable articles | |
JPS5563223A (en) | Method of lining metal tube | |
JPS6234753Y2 (en) | ||
JPH0243871Y2 (en) | ||
JPH0747296B2 (en) | Lining method for pipe with flange | |
US4002787A (en) | Foamed polymeric article and method for making the same | |
JPH0510552B2 (en) | ||
JPS5925621Y2 (en) | Joint part of split heat shrink tube | |
JPS62132632A (en) | Method of lining of inner surface of branched pipe | |
JPS6128558Y2 (en) | ||
JPS5815298B2 (en) | Method for manufacturing heat-shrinkable tube with bellows structure | |
JPS5852092Y2 (en) | heat shrinkable tube | |
JPS6214476Y2 (en) | ||
JPS635855Y2 (en) | ||
JPH0418536B2 (en) | ||
JPH0243872Y2 (en) | ||
JPS54150482A (en) | Manufacture of synthetic resin-lined metal tube | |
JPH03136832A (en) | Method for thermal welding of plastic pipe |