JPH0734662Y2 - Heat recovery article - Google Patents
Heat recovery articleInfo
- Publication number
- JPH0734662Y2 JPH0734662Y2 JP6519690U JP6519690U JPH0734662Y2 JP H0734662 Y2 JPH0734662 Y2 JP H0734662Y2 JP 6519690 U JP6519690 U JP 6519690U JP 6519690 U JP6519690 U JP 6519690U JP H0734662 Y2 JPH0734662 Y2 JP H0734662Y2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- heating element
- recoverable
- layer
- metal foil
- 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 - Lifetime
Links
Landscapes
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Surface Heating Bodies (AREA)
- Laminated Bodies (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は通電により熱収縮あるいは熱拡大（熱膨張）し
得る熱回復性物品の改良に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to improvement of a heat-recoverable article that can be thermally shrunk or thermally expanded (thermally expanded) by energization.
（従来の技術） 熱回復性物品の１つのタイプである加熱により収縮し得
る熱収縮性物品はケーブルの接続部あるいは流体輸送用
鋼管の接続部の防食被覆用等に、また他の１つである加
熱により拡大し得る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。(Prior Art) A heat-shrinkable article, which is one type of heat-recoverable article and can shrink by heating, is used for anticorrosion coating of a connection portion of a cable or a connection portion of a steel pipe for fluid transportation, and another one. A heat-expandable article that can be expanded by a certain heating is used for lining the inner surface of a steel pipe.
かかる用途に従来から用いられている熱回復性物品は、
熱可塑性プラスチックをチューブ状等の所定形状に成形
し、これに熱回復性を付与したものである。Heat-recoverable articles conventionally used for such applications are
Thermoplastics are molded into a predetermined shape such as a tube shape, and heat recoverability is given to this.
ところで、かような熱回復性物品を熱収縮あるいは熱拡
大せしめる際の熱源としては、ヒーター、バーナー等の
比較的大きな加熱器具を用いることがある。しかしなが
ら、手狭な場所、高所等においては、このような加熱器
具が使用不可能であったり、使用上大幅な制限を受ける
ことがあった。By the way, a relatively large heating device such as a heater or a burner may be used as a heat source when heat-shrinking or expanding the heat-recoverable article. However, in a narrow place, a high place, etc., such a heating device may not be usable or may be greatly restricted in use.
この問題に対処するために、本出願人は、先に、熱回復
性層中に通電性発熱体を埋め込み配置した構造の熱回復
性物品を提案した（実公昭58−52096号公報）。この熱
回復性物品は通電することにより発熱体を発熱せしめ、
その熱により熱回復性層を熱収縮あるいは熱拡大させる
ものであり、ヒーター、バーナーのような加熱器具が不
要であり、使用上の利便性が高くて好ましいものであ
る。In order to deal with this problem, the present applicant has previously proposed a heat-recoverable article having a structure in which an electrically conductive heating element is embedded and arranged in a heat-recoverable layer (Japanese Utility Model Publication No. 58-52096). This heat-recoverable article causes the heating element to generate heat when energized,
The heat causes the heat-recoverable layer to shrink or expand, which does not require a heating tool such as a heater or a burner, and is preferable because it is convenient in use.
（考案が解決しようとする課題） 上記した如く、通電性発熱体内蔵の熱回復性物品は好ま
しいものであるが、発熱温度が高い場合、熱回復性層の
発熱体近傍部分の熱劣化が懸念される場合がある。(Problems to be Solved by the Invention) As described above, a heat-recoverable article having a built-in electrically conductive heating element is preferable, but when the heat generation temperature is high, there is concern that the heat-recoverable layer may be deteriorated by heat in the vicinity of the heating element. May be done.
従って、本考案は通電発熱体内蔵の熱回復性物品の長所
を維持して、発熱時における熱回復性層の熱劣化の懸念
を払拭した新規な構造を有する熱回復性物品を提供する
ことを目的とする。Therefore, the present invention provides a heat-recoverable article having a novel structure that maintains the advantages of the heat-recoverable article with a built-in heating element and eliminates the concern of thermal deterioration of the heat-recoverable layer during heat generation. To aim.
（課題を解決するための手段） 本考案者は上記現状に鑑み鋭意検討の結果、金属箔を熱
伝導層として用いれば、所期の目的を確実に達成し得る
ことを見い出し、本考案を完成するに至った。(Means for Solving the Problems) As a result of intensive studies in view of the above-mentioned present situation, the present inventor has found that if a metal foil is used as a heat conductive layer, the intended purpose can be reliably achieved, and the present invention is completed. Came to do.
即ち、本考案は熱回復性層の内部に、金属箔および通電
発熱体が配置されて成るものである。That is, the present invention is one in which a metal foil and an electric heating element are arranged inside the heat recovery layer.
本考案における熱回復性層は、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、ある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
組成物をシート状、チューブ状等の所定形状に成形し、
この成形品に熱収縮性あるいは熱拡大性を付与したもの
で、前記プラスチックあるいはゴムが架橋されたもので
もよい。The heat recovery layer in the present invention is made of polyethylene, polypropylene, polyvinyl chloride, ethylene-vinyl acetate copolymer, thermoplastic resin such as fluororesin, natural rubber,
A composition such as silicone rubber, butyl rubber, rubber such as ethylene-propylene copolymer, or a mixture thereof containing an appropriate amount of additives such as an antiaging agent, a filler, and a colorant, if desired, in a sheet shape, a tube shape, or the like. Molded into a shape,
This molded product is provided with heat shrinkability or heat expandability, and may be a product obtained by crosslinking the plastic or rubber.
また、熱回復性層の内部に配置される通電発熱体は特に
制限されることなく、種々のものが使用できる。その具
体例としては、次に掲げるものが挙げられる。In addition, the electric heating element disposed inside the heat recovery layer is not particularly limited, and various ones can be used. Specific examples include the following.
（ａ）ニクロム線のような発熱線。(A) A heating wire such as a nichrome wire.
（ｂ）ガラスクロスのような織布や不織布に導電性塗料
を塗布するか、プラスチックやゴムにカーボンのような
導電性粉末を加えてシート状に成形して成る面状発熱
体。(B) A sheet heating element formed by applying a conductive coating material to a woven or non-woven fabric such as glass cloth, or by adding a conductive powder such as carbon to plastic or rubber to form a sheet.
（ｃ）ガラス繊維を網目状に織り、導電性塗料を塗布し
た網目状発熱体。(C) A mesh-like heating element in which glass fibers are woven in a mesh shape and a conductive paint is applied.
（ｄ）織布や不織布を複数箇所で打抜いて孔を設けて得
られる孔あき基材に、導電性塗料を塗布した孔あき発熱
体。(D) A perforated heating element in which a conductive coating material is applied to a perforated base material obtained by punching a woven fabric or a non-woven fabric at a plurality of places to form holes.
以下、図面により本考案の実例を説明する。図面は熱収
縮性を有するチューブ状の熱回復性物品を示し、熱回復
性層（この場合は熱収縮性）１の内部には、線状の通電
発熱体２が配置され、更にこの発熱体２の両面には電気
的絶縁を確保し得る距離をおいて金属箔３が配置されて
いる。Hereinafter, an example of the present invention will be described with reference to the drawings. The drawing shows a tubular heat-recoverable article having heat-shrinkability, in which a linear electric heating element 2 is arranged inside a heat-recoverable layer (heat-shrinkable in this case) 1. Metal foils 3 are arranged on both sides of the metal foil 2 at a distance that ensures electrical insulation.
金属箔３としては、アルミニウム箔、銅箔、鉛箔等を使
用でき、その厚さは、通常、約５〜50μｍである。As the metal foil 3, aluminum foil, copper foil, lead foil or the like can be used, and the thickness thereof is usually about 5 to 50 μm.
なお、図示を省略したが、通電発熱体には電極が設けら
れ、更に該電極には外部電源との接続のためのリード線
が取り付けられている。Although not shown, an electrode is provided on the electric heating element, and a lead wire for connecting with an external power source is attached to the electrode.
また、所望により熱回復性層の内周面上に接着剤層を設
けることもできる。Further, if desired, an adhesive layer may be provided on the inner peripheral surface of the heat recovery layer.
かような熱回復性物品は、例えば管状あるいは棒状の芯
体上に熱収縮性シート、金属箔、熱収縮性シート、通電
発熱体、熱収縮性シート、金属箔および熱収縮性シート
を順次巻付け、次いで加熱して熱収縮性シートを溶融せ
しめることにより、巻付け材料相互を一体化してチュー
ブ状とした後、冷却し、芯体を引抜き除去する方法によ
って得ることができる。Such a heat-recoverable article is obtained by sequentially winding a heat-shrinkable sheet, a metal foil, a heat-shrinkable sheet, an electric heating element, a heat-shrinkable sheet, a metal foil and a heat-shrinkable sheet on a tubular or rod-shaped core. This can be obtained by a method of melting the heat shrinkable sheet by applying it and then heating the heat shrinkable sheet to integrate the winding materials into a tubular shape, then cooling and then removing the core.
この熱回復性物品は使用に際し、外部電源から電圧を印
加して発熱体を発熱させれば、その熱は金属箔を通して
速やかに熱回復性層に伝達拡散されるので、該回復性層
の熱回復を迅速に行うことができる。また、熱の伝達拡
散が速いため、熱回復性層の発熱体近傍部分に熱が滞留
することもなく、従って、該部分の過熱劣化も生じな
い。When this heat-recoverable article is used, if a voltage is applied from an external power source to heat the heating element, the heat is quickly transferred to and diffused through the metal foil to the heat-recoverable layer. Recovery can be done quickly. In addition, since the heat is diffused and diffused quickly, heat does not stay in the heat recovery layer near the heating element, and therefore, overheating of the heat recovery layer does not occur.
なお、熱回復性層が熱収縮性である場合はその熱収縮に
際し、金属箔は波状に変形することによって、熱回復性
層の熱収縮に追随し、一方、熱回復性層が熱拡大性であ
る場合はその熱拡大に際し、金属箔は破断することもあ
るが、何ら支障はない。When the heat-recoverable layer is heat-shrinkable, the metal foil deforms in a wavy shape during the heat-shrinkage to follow the heat-shrinkage of the heat-recoverable layer, while the heat-recoverable layer has a heat-expandable property. When the heat spreads, the metal foil may be broken, but there is no problem.
上記実例では、通電発熱体の両面側に金属箔を配置した
が、金属箔の配置は発熱体の片面側のみとすることもで
きる。In the above example, the metal foil is arranged on both sides of the electric heating element, but the metal foil may be arranged on only one side of the heating element.
（考案の効果） 本考案は上記のように構成され、通電発熱体の発する熱
を金属箔によって熱回復性層に伝達拡散させるようにし
たので、熱の滞留が起こらず、従って、熱劣化を生じ難
い熱回復性物品を提供できる。(Effect of the Invention) The present invention is configured as described above, and the heat generated by the electric heating element is transferred and diffused to the heat recovery layer by the metal foil, so that no heat retention occurs and therefore heat deterioration does not occur. A heat-recoverable article that is unlikely to occur can be provided.
図面は本考案に係る熱回復性物品の実例を示す正面図で
ある。 １……熱回復性層、２……通電発熱体 ３……金属箔Drawing is a front view showing an example of a heat-recoverable article according to the present invention. 1 ... Heat recovery layer, 2 ... Electric heating element 3 ... Metal foil
Claims (1)
熱体が配置されて成る熱回復性物品。1. A heat-recoverable article in which a metal foil and an electric heating element are arranged inside a heat-recoverable layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6519690U JPH0734662Y2 (en) | 1990-06-20 | 1990-06-20 | Heat recovery article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6519690U JPH0734662Y2 (en) | 1990-06-20 | 1990-06-20 | Heat recovery article |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0424330U JPH0424330U (en) | 1992-02-27 |
| JPH0734662Y2 true JPH0734662Y2 (en) | 1995-08-09 |
Family
ID=31596810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6519690U Expired - Lifetime JPH0734662Y2 (en) | 1990-06-20 | 1990-06-20 | Heat recovery article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0734662Y2 (en) |
-
1990
- 1990-06-20 JP JP6519690U patent/JPH0734662Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0424330U (en) | 1992-02-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |