JP2003217904A - Flexible ptc heating element - Google Patents
Flexible ptc heating elementInfo
- Publication number
- JP2003217904A JP2003217904A JP2002018043A JP2002018043A JP2003217904A JP 2003217904 A JP2003217904 A JP 2003217904A JP 2002018043 A JP2002018043 A JP 2002018043A JP 2002018043 A JP2002018043 A JP 2002018043A JP 2003217904 A JP2003217904 A JP 2003217904A
- Authority
- JP
- Japan
- Prior art keywords
- flexible
- heating element
- resin
- ptc
- resistor
- 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.)
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- Resistance Heating (AREA)
- Thermistors And Varistors (AREA)
- Surface Heating Bodies (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、カーシートヒータ
や、ハンドルヒータ等に用いて、柔軟性で任意の曲面形
状に装着可能で、かつ自己温度調節機能を有する柔軟性
ＰＴＣ発熱体に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible PTC heating element which is used as a car seat heater, a steering wheel heater or the like and can be flexibly mounted on an arbitrary curved surface shape and has a self-temperature adjusting function. is there.
【０００２】[0002]
【従来の技術】この種のＰＴＣ発熱体は、図５に示した
ように、セラミックや絶縁処理された金属板等の柔軟性
のない固い基板２０上に、導電性インキ組成物２１を印
刷あるいは塗布し、任意の厚さ及び形状の塗膜を形成す
ることにより得られるものであり、従来から、特殊な形
状や小型の発熱体、過電流保護素子として使用されてい
るものである。２２は電極、２３は被覆材である。2. Description of the Related Art As shown in FIG. 5, a PTC heating element of this type prints a conductive ink composition 21 on a rigid and rigid substrate 20 such as a ceramic plate or a metal plate subjected to an insulation treatment. It is obtained by coating and forming a coating film having an arbitrary thickness and shape, and has been conventionally used as a special shape or small heating element or an overcurrent protection element. 22 is an electrode, and 23 is a coating material.
【０００３】このＰＴＣ発熱体に使用される導電性イン
キ組成物としては、結晶性高分子からなるベースポリマ
ーと、カーボンブラック、金属粉末、グラファイトなど
の導電性物質を溶媒に分散させてなるものなどが用いら
れ、特開昭５６−１３６８９号公報、特開平６−９６８
４３号公報、特開平８−１２０１８２号公報などが提案
されている。The conductive ink composition used for the PTC heating element is a base polymer composed of a crystalline polymer and a conductive material such as carbon black, metal powder or graphite dispersed in a solvent. Are used in JP-A-56-13689 and JP-A-6-968.
Japanese Patent Laid-Open No. 43, Japanese Patent Laid-Open No. 8-120182, and the like have been proposed.
【０００４】導電性インキ組成物は、温度上昇によって
急峻なＰＴＣ特性を示す塗膜を形成することができる。
このＰＴＣ特性は、温度上昇による結晶性高分子の体積
膨張により導電性物質の連鎖が切断され、それに伴って
抵抗が上昇することによって発現するものである。The conductive ink composition can form a coating film exhibiting a steep PTC characteristic as the temperature rises.
This PTC characteristic is exhibited when the chain of the conductive substance is broken by the volume expansion of the crystalline polymer due to the temperature rise, and the resistance accordingly rises.
【０００５】[0005]
【発明が解決しようとする課題】しかし、前記従来のＰ
ＴＣ発熱体は、柔軟性のない固い基板上に形成されてい
るために、カーシートヒータのような身体にフィットし
た用途や、ハンドルなどの曲面形状物に装着することが
できないと言う課題を有していた。However, the above-mentioned conventional P
Since the TC heating element is formed on a rigid and rigid substrate, it has a problem that it cannot be attached to a body such as a car seat heater or cannot be attached to a curved shape object such as a handle. Was.
【０００６】もちろん、樹脂やエラストマーなどのフィ
ルムを基材に用いれば初期的に柔軟性を有するＰＴＣ発
熱体にすることはできるが、加重繰り返しや通電（連
続、間欠）試験により抵抗値が変化してしまうと言う課
題を有していた。Of course, if a film of resin or elastomer is used as the base material, a PTC heating element having initial flexibility can be obtained. There was a problem that it would end up.
【０００７】前述したように，ＰＴＣ特性の発現は結晶
性高分子の体積変化により導電性物質の連鎖状態が変化
することによるものであり、基材の熱的・機械的寸法変
化は、ＰＴＣ抵抗体の特性に著しい影響を与えることは
容易に創造できる。そのため、今日まで柔軟性を有し、
繰り返し折り曲げの負荷のかかる環境下での使用に耐え
るＰＴＣ発熱体は開発されていない。As described above, the expression of the PTC characteristics is due to the change in the chain state of the conductive substance due to the volume change of the crystalline polymer, and the thermal / mechanical dimensional change of the base material causes the PTC resistance. It is easy to create a significant effect on the characteristics of the body. Therefore, it has flexibility to date,
No PTC heating element has been developed that can withstand use in an environment where repeated bending is applied.
【０００８】[0008]
【課題を解決するための手段】本発明は、柔軟性ＰＴＣ
抵抗体と、前記柔軟性ＰＴＣ抵抗体に給電する柔軟性電
極と、表面に前記柔軟性ＰＴＣ抵抗体及び柔軟性電極を
含浸保持する含浸保持層と裏面にバリアー層を有する柔
軟性基材と、前記前記柔軟性ＰＴＣ抵抗体及び柔軟性電
極を被覆する柔軟性被覆材とからなる。The present invention is a flexible PTC.
A resistor, a flexible electrode for feeding the flexible PTC resistor, an impregnated holding layer for impregnating and holding the flexible PTC resistor and the flexible electrode on the surface, and a flexible substrate having a barrier layer on the back surface, The flexible PTC resistor and the flexible coating material for coating the flexible electrode.
【０００９】以上の構成として、柔軟性電極及び柔軟性
ＰＴＣ抵抗体は、柔軟性基材の含浸保持層に含浸保持さ
れ、ともにこれらは３次元的なネットワークを形成して
いる。そのため、折り曲げが加わった状態でも柔軟性電
極及び柔軟性ＰＴＣ抵抗体への応力は緩和されるととも
に両者の位置関係保持される。また、柔軟性電極及び柔
軟性ＰＴＣ抵抗体は、柔軟性基材のバリアー層と柔軟性
被覆材の間に配置されて、外気との接触が阻害されてい
る。こうして、安定したＰＴＣ特性を有し、かつ長期信
頼性の高い柔軟性ＰＴＣ発熱体を提供できる。With the above structure, the flexible electrode and the flexible PTC resistor are impregnated and held in the impregnating and holding layer of the flexible base material, and both form a three-dimensional network. Therefore, the stress on the flexible electrode and the flexible PTC resistor is relieved and the positional relationship between the flexible electrode and the flexible PTC resistor is maintained even when the bending is applied. In addition, the flexible electrode and the flexible PTC resistor are arranged between the barrier layer of the flexible base material and the flexible coating material to prevent contact with the outside air. Thus, it is possible to provide a flexible PTC heating element having stable PTC characteristics and high long-term reliability.
【００１０】[0010]
【発明の実施の形態】請求項１に記載した発明は、柔軟
性ＰＴＣ抵抗体と、前記柔軟性ＰＴＣ抵抗体に給電する
柔軟性電極と、表面に前記柔軟性ＰＴＣ抵抗体及び柔軟
性電極を含浸保持する含浸保持層と裏面にバリアー層を
有する柔軟性基材と、前記前記柔軟性ＰＴＣ抵抗体及び
柔軟性電極を被覆する柔軟性被覆材とからなる。BEST MODE FOR CARRYING OUT THE INVENTION A flexible PTC resistor, a flexible electrode for supplying power to the flexible PTC resistor, and a flexible PTC resistor and a flexible electrode on a surface are provided. It comprises an impregnating and holding layer for impregnating and holding, a flexible base material having a barrier layer on the back surface, and a flexible coating material for coating the flexible PTC resistor and the flexible electrode.
【００１１】この構成により、柔軟性基材の含浸保持層
内に柔軟性電極と柔軟性ＰＴＣ抵抗体を保持するととも
に３次元的なネットワークを形成できる。これにより、
柔軟性電極と柔軟性ＰＴＣ抵抗体への応力を緩和できる
とともに両者の相対的な位置関係を保持することができ
る。With this structure, the flexible electrode and the flexible PTC resistor can be held in the impregnated holding layer of the flexible base material, and a three-dimensional network can be formed. This allows
The stress on the flexible electrode and the flexible PTC resistor can be relaxed and the relative positional relationship between the two can be maintained.
【００１２】請求項２に記載した発明は、柔軟性基材の
含浸保持層を長繊維から成る樹脂製不織布、バリアー層
を柔軟性樹脂フィルム、又は柔軟性樹脂系コーティング
材で構成してなる。According to the second aspect of the present invention, the impregnating and holding layer of the flexible substrate is made of a resin non-woven fabric made of long fibers, and the barrier layer is made of a flexible resin film or a flexible resin coating material.
【００１３】この構成により、長繊維の長手方向への高
い引っ張り強度を発揮できて、長繊維を直交させて柔軟
性基材の含浸保持層を形成した場合には直交方向に対し
て高い引っ張り強度を付与できる。また、バリアー層と
して柔軟性樹脂フィルム、又は柔軟性樹脂系コーティン
グ材を用いることにより、含浸保持層の強度をさらに高
めることができる。With this configuration, high tensile strength of the long fibers in the longitudinal direction can be exhibited, and when the impregnated holding layer of the flexible substrate is formed by making the long fibers orthogonal to each other, the high tensile strength in the orthogonal direction is obtained. Can be given. Further, by using a flexible resin film or a flexible resin coating material as the barrier layer, the strength of the impregnation holding layer can be further increased.
【００１４】請求項３に記載した発明は、柔軟性基材の
含浸保持層を、樹脂製不織布に柔軟性樹脂系コーティン
グ材を含浸させて形成してなる。According to the third aspect of the invention, the impregnating and holding layer of the flexible base material is formed by impregnating a resin non-woven fabric with a flexible resin coating material.
【００１５】この構成により、柔軟性樹脂系コーティン
グ材により含浸保持層の強度を高めることができるとと
もに、柔軟性電極及び柔軟性ＰＴＣ抵抗体の含浸（印刷
塗布）量及びＰＴＣ特性を調節することができる。With this structure, the strength of the impregnation holding layer can be increased by the flexible resin coating material, and the amount of impregnation (printing application) of the flexible electrode and the flexible PTC resistor and the PTC characteristic can be adjusted. it can.
【００１６】請求項４に記載した発明は、柔軟性基材に
用いる柔軟性樹脂系コーティング材として、アクリルニ
トリル−ブタジエンゴム、カルボキシル化ニトリルゴ
ム、又はエチレン−酢酸ビニルゴム系ラテックスを用い
てなる。According to the invention described in claim 4, as the flexible resin coating material used for the flexible substrate, acrylonitrile-butadiene rubber, carboxylated nitrile rubber, or ethylene-vinyl acetate rubber latex is used.
【００１７】この構成により、これらのラテックスは柔
軟性ＰＴＣ抵抗体との反応性が低いために、柔軟性ＰＴ
Ｃ抵抗体が本来有するＰＴＣ特性を損なうことなく安定
したＰＴＣ特性を有する柔軟性ＰＴＣ発熱体を提供でき
る。With this structure, these latexes have low reactivity with the flexible PTC resistor, and therefore the flexible PT
It is possible to provide a flexible PTC heating element having stable PTC characteristics without impairing the PTC characteristics originally possessed by the C resistor.
【００１８】請求項５に記載した発明は、柔軟性被覆材
として、柔軟性樹脂フィルム、又は柔軟性樹脂系コーテ
ィング材を用いてなる。In the invention described in claim 5, a flexible resin film or a flexible resin coating material is used as the flexible coating material.
【００１９】この構成により、柔軟性基材及びその上に
配置された柔軟性電極及び柔軟性ＰＴＣ抵抗体を保護し
て機械的強度を高めることできる。With this structure, it is possible to protect the flexible base material, the flexible electrode and the flexible PTC resistor arranged thereon, and increase the mechanical strength.
【００２０】請求項６に記載した発明は、柔軟性被覆材
の樹脂として、ポリウレタン樹脂、ポリエステル樹脂、
あるいは、アクリル樹脂を用いてなる。In the invention described in claim 6, as the resin for the flexible coating material, polyurethane resin, polyester resin,
Alternatively, it is made of acrylic resin.
【００２１】この構成により、柔軟性ＰＴＣ抵抗体が本
来有するＰＴＣ特性を損なうことなく安定したＰＴＣ特
性を有する柔軟性ＰＴＣ発熱体を提供できる。With this structure, it is possible to provide a flexible PTC heating element having stable PTC characteristics without impairing the PTC characteristics originally possessed by the flexible PTC resistor.
【００２２】請求項７に記載した発明は、柔軟性基材に
貫通孔を有してなる。In a seventh aspect of the invention, the flexible base material has through holes.
【００２３】この構成により、柔軟性ＰＴＣ発熱体を人
体と接触させて用いる場合に、貫通孔により湿気を外気
委に放出することができるために良好な装着感を発揮で
きる。また、貫通孔を利用して、柔軟性ＰＴＣ発熱体を
固定するための固定治具取り付け部として利用できる。With this structure, when the flexible PTC heating element is used in contact with the human body, moisture can be released to the outside air through the through hole, so that a good wearing feeling can be exhibited. Further, the through hole can be used as a fixing jig attachment portion for fixing the flexible PTC heating element.
【００２４】請求項８に記載した発明は、柔軟性基材の
貫通孔を吸水・放湿性材料で被覆してなる。In the invention described in claim 8, the through hole of the flexible substrate is coated with a water absorbing / moisture releasing material.
【００２５】この構成により、柔軟性ＰＴＣ発熱体に水
や人体より発生した汗や湿気が接触した場合に、貫通孔
に設けた吸水・放湿性材料で速やかに吸水してかつ放湿
できるため、良好な装着感を発揮できる。With this structure, when the flexible PTC heating element comes into contact with water or sweat or moisture generated by the human body, the water-absorbing / moisture-releasing material provided in the through-hole can quickly absorb and release moisture. A good fit can be exhibited.
【００２６】請求項９に記載した発明は、柔軟性基材の
含浸保持層に先ず柔軟性ＰＴＣ抵抗体を形成し、その上
に柔軟性電極を形成してなる。In the invention described in claim 9, a flexible PTC resistor is first formed on the impregnated holding layer of the flexible base material, and a flexible electrode is formed thereon.
【００２７】この構成により、柔軟性電極の塗布面を柔
軟性ＰＴＣ抵抗体皮膜により平滑化することで、柔軟性
電極を均一な薄膜として形成し、柔軟性電極の使用量を
正確に管理できる。With this structure, the coated surface of the flexible electrode is smoothed by the flexible PTC resistor film, so that the flexible electrode can be formed as a uniform thin film and the amount of the flexible electrode used can be accurately controlled.
【００２８】[0028]
【実施例】（実施例１）以下、本発明の第１の実施例に
ついて説明する。図１は本実施例の柔軟性ＰＴＣ発熱体
を示す透過平面図（ａ）と概略断面図（ｂ）である。透
過平面図（ａ）のＸＹ位置での断面が概略断面図（ｂ）
である。１は柔軟性基材であり、含浸保持層２として長
繊維から成るポリエステル不織布を用いて、これにバリ
アー層３としてポリウレタンフィルムを張り合わせて構
成している。このバリアー層３は作製時には後述する柔
軟性電極ペーストや柔軟性ＰＴＣ抵抗体インクの透過を
防止して良好なスクリーン印刷を行うことができるとと
もに、長期実使用の際には柔軟性電極と柔軟性ＰＴＣ抵
抗体を保護する作用を有する。４は銀やカーボンブラッ
ク等の導電性粒子を樹脂溶液中に分散してなる導電性ペ
ーストをスクリーン印刷して乾燥して得た櫛形の一対の
柔軟性電極、５は柔軟性ＰＴＣ抵抗体である。(Embodiment 1) A first embodiment of the present invention will be described below. FIG. 1 is a transparent plane view (a) and a schematic cross-sectional view (b) showing a flexible PTC heating element of this embodiment. The cross-section at the XY position in the transmission plan view (a) is a schematic cross-sectional view (b).
Is. Reference numeral 1 denotes a flexible base material, which is formed by using a polyester non-woven fabric made of long fibers as the impregnation holding layer 2 and laminating a polyurethane film as the barrier layer 3 thereto. The barrier layer 3 can prevent the permeation of a flexible electrode paste or a flexible PTC resistor ink described later during production and can perform good screen printing, and can be used as a flexible electrode and a flexible electrode during long-term actual use. It has a function of protecting the PTC resistor. Reference numeral 4 denotes a pair of comb-shaped flexible electrodes obtained by screen-printing and drying a conductive paste in which conductive particles such as silver and carbon black are dispersed in a resin solution, and 5 is a flexible PTC resistor. .
【００２９】エチレン酢酸ビニル共重合体とポリエチレ
ン樹脂等の結晶性樹脂と、カーボンブラックと、化学架
橋剤やカップリング剤等の親和性付与剤を所定量混練し
た後に、熱処理を行い、混練物を得た。続いて、これを
粉砕して、この粉砕品とアクリルニトリル・ブタジエン
ゴム系接着剤等の柔軟性バインダーとを３本ロールで練
り潰したのちに溶剤で希釈して柔軟性ＰＴＣ抵抗体イン
キを作製した。このインクを柔軟性基材１の含浸保持層
２側にスクリーン印刷し乾燥して柔軟性ＰＴＣ抵抗体５
として供した。６は粘着剤付きのゴム系フィルム等の柔
軟性被覆材である。なお、本実施例における柔軟性ＰＴ
Ｃ発熱体の作製は、柔軟性基材１に先ず柔軟性電極４を
印刷し、次に、柔軟性ＰＴＣ抵抗体５を印刷し、さら
に、柔軟性被覆材６で被覆する手順によった。After kneading a predetermined amount of an ethylene vinyl acetate copolymer, a crystalline resin such as polyethylene resin, carbon black, and an affinity imparting agent such as a chemical cross-linking agent or a coupling agent, heat treatment is performed to obtain a kneaded product. Obtained. Subsequently, this is crushed, and the crushed product and a flexible binder such as an acrylonitrile / butadiene rubber adhesive are crushed with a three-roll and then diluted with a solvent to prepare a flexible PTC resistor ink. did. This ink is screen-printed on the side of the impregnation holding layer 2 of the flexible substrate 1 and dried to obtain the flexible PTC resistor 5
Served as Reference numeral 6 is a flexible coating material such as a rubber film with an adhesive. The flexible PT in this embodiment
The C heating element was produced by printing the flexible electrode 4 on the flexible base material 1, then printing the flexible PTC resistor 5, and then coating the flexible coating material 6.
【００３０】図１（ｂ）に図示したように、波形で示し
た柔軟性基材１の含浸保持層２内に柔軟性電極４及び柔
軟性ＰＴＣ抵抗体５が設けられた構成とすることができ
る。したがって、柔軟性電極４と柔軟性ＰＴＣ抵抗体５
とは、電気的に接触した状態で含浸保持層２内に３次元
的に保持・形成された状態となり、折り曲げの様な負荷
が加わった状態でも両者の相対的な位置関係を保持でき
る。As shown in FIG. 1B, the flexible electrode 4 and the flexible PTC resistor 5 are provided in the impregnated holding layer 2 of the flexible base material 1 shown by the waveform. it can. Therefore, the flexible electrode 4 and the flexible PTC resistor 5
Means a state in which they are three-dimensionally held and formed in the impregnated holding layer 2 in an electrically contacting state, and the relative positional relationship between the two can be held even when a load such as bending is applied.
【００３１】図２に、加振耐久評価結果を示した。この
評価は、カーシートヒータとしての柔軟性評価の一種で
あり、人間の膝頭を想定して直径１６５ｍｍの半円球を
カーシート座面より５０ｍｍ押し下ることを繰り返すも
ので、その際の抵抗値変化を加振回数とともに追跡した
ものである。図２の縦軸はに抵抗値変化（相対比較
値）、横軸は加振回数である。FIG. 2 shows the vibration durability evaluation results. This evaluation is a kind of flexibility evaluation as a car seat heater, and it is assumed that a human kneecap is assumed and a hemisphere with a diameter of 165 mm is pushed down by 50 mm from the seat surface of the car seat. The change is tracked together with the number of times of vibration. The vertical axis of FIG. 2 represents the resistance value change (relative comparison value), and the horizontal axis represents the number of times of vibration.
【００３２】本発明による柔軟性基材と、比較例として
含浸保持性のないポリエステルフィルム、人工皮革を基
材とした場合を示した。人工皮革が１０万回、ポリエス
テルフィルムが３０万回で電極断線による抵抗値上昇を
生じたのに対して、本発明は目標仕様（加振回数１００
万回で抵抗値変化０．１以下）をクリアーする１３０万
回であった。また、さらに含浸保持性をさらに高めた短
繊維からなる基材では３００万回であった。これらの結
果より、加振耐久性は柔軟性電極及び柔軟性抵抗体を含
浸する基材ほど優れていることがわかる。このことは、
基材内でこれらの３次元的な非直線的なネットワークが
形成されることによると推定された。A case where a flexible substrate according to the present invention, a polyester film having no impregnating and holding property, and an artificial leather as a substrate is shown as a comparative example is shown. While the artificial leather produced 100,000 times and the polyester film produced 300,000 times, the resistance value increased due to the electrode breakage.
It was 1.3 million times to clear the resistance change of 0.1 times or less in 10,000 times. In addition, the number of cycles was 3 million for the substrate made of short fibers with further improved impregnation retention. From these results, it is understood that the vibration durability is superior to the base material impregnated with the flexible electrode and the flexible resistor. This is
It was estimated that these three-dimensional nonlinear networks were formed in the substrate.
【００３３】しかしながら、一方で、含浸する基材ほど
電極やＰＴＣ抵抗体の塗布量が多く、かつ塗布バラツキ
が大きくなり、再現性のあるＰＴＣ特性を発揮すること
が困難となるとともにコストアップとなる。長繊維から
なるポリエステル不織布を柔軟性基材の含浸保持層とす
ることで適正な品質の柔軟性ＰＴＣ発熱体を提供するこ
とができる。On the other hand, however, the more the base material to be impregnated, the more the coating amount of the electrodes and the PTC resistor is, and the greater the dispersion of the coating is, which makes it difficult to exhibit reproducible PTC characteristics and increases the cost. . A flexible PTC heating element of appropriate quality can be provided by using a polyester nonwoven fabric made of long fibers as the impregnating and holding layer of the flexible base material.
【００３４】なお、上記実施例では、柔軟性基材を長繊
維のポリエステル不織布としたが必ずしもこれに限定す
るものではない。ポリプロピレンやナイロンなどの合成
繊維やコットンなどの天然繊維でも良いことは言うまで
もない。また、柔軟性基材のバリアー層としてポリウレ
タンフィルムを柔軟性樹脂フィルムとして用いたが、こ
れに限定するものではない。ポリウレタン樹脂やポリエ
ステル樹脂やアクリル樹脂等の柔軟性樹脂系コーティン
グ材を用いることができる。Although the flexible base material is the long-fiber polyester nonwoven fabric in the above embodiments, the flexible base material is not limited to this. It goes without saying that synthetic fibers such as polypropylene and nylon and natural fibers such as cotton may be used. Further, although the polyurethane film is used as the flexible resin film as the barrier layer of the flexible base material, the present invention is not limited to this. A flexible resin-based coating material such as polyurethane resin, polyester resin or acrylic resin can be used.
【００３５】（実施例２）次に、本発明の第２の実施例
について述べる。柔軟性基材の含浸保持層、例えば長繊
維から成るポリエステル不織布に柔軟性樹脂系コーティ
ング材を適量含浸させて用いるものである。その他の構
成は、実施例１と同様である。(Embodiment 2) Next, a second embodiment of the present invention will be described. It is used by impregnating and holding an impregnating and holding layer of a flexible base material, for example, a polyester nonwoven fabric made of long fibers, with an appropriate amount of a flexible resin coating material. Other configurations are similar to those of the first embodiment.
【００３６】柔軟性基材の含浸保護層への柔軟性電極や
柔軟性ＰＴＣ抵抗体の印刷塗布量は版のメッシュやその
インクの粘度等の印刷条件によることは言うまでもない
が、含浸保護層の性状、すなわち表面の平滑性や含浸性
等によっても大きく影響を受けることが判明した。そこ
で、柔軟性基材の保護含浸層の性状によっては、予め保
護含浸層を前処理して柔軟性電極や柔軟性ＰＴＣ抵抗体
などのインクの塗布性を調整する必要があることを見出
した。Needless to say, the print application amount of the flexible electrode and the flexible PTC resistor on the impregnated protective layer of the flexible substrate depends on the printing conditions such as the mesh of the plate and the viscosity of the ink. It was also found that the properties, that is, the smoothness of the surface and the impregnating property, are greatly affected. Therefore, it has been found that depending on the properties of the protective impregnation layer of the flexible base material, it is necessary to pretreat the protective impregnation layer in advance to adjust the applicability of ink such as the flexible electrode or the flexible PTC resistor.
【００３７】そのために、含浸保護層に柔軟性樹脂系コ
ーティング材を適量含浸させて表面を調整したのちに柔
軟性電極や柔軟性ＰＴＣ抵抗体などのインクを印刷塗布
すれば常に安定した塗布量を確保できて、適正な品質の
柔軟性ＰＴＣ発熱体を提供できる。なお、柔軟性樹脂系
コーティング材としては、ポリウレタン樹脂やポリエス
テル樹脂やアクリル樹脂等の柔軟性樹脂系コーティング
材を用いることができる。Therefore, if the impregnation protective layer is impregnated with an appropriate amount of a flexible resin coating material to adjust the surface and then ink such as a flexible electrode or a flexible PTC resistor is applied by printing, a stable application amount is always obtained. A flexible PTC heating element of appropriate quality can be provided. As the flexible resin coating material, a flexible resin coating material such as polyurethane resin, polyester resin or acrylic resin can be used.
【００３８】また、柔軟性被覆材として、実施例１のバ
リアー層と同様の柔軟性樹脂フィルムを用いることがで
きる。また、これに用いる柔軟性樹脂系コーティング材
としては、ポリウレタン樹脂、ポリエステル樹脂、アク
リル樹脂を用いる。これにより、柔軟性電極や柔軟性Ｐ
ＴＣ抵抗体に影響を与えることなく保護することができ
る。As the flexible coating material, the same flexible resin film as that of the barrier layer of Example 1 can be used. As the flexible resin coating material used therefor, polyurethane resin, polyester resin, and acrylic resin are used. This allows flexible electrodes and flexible P
It is possible to protect the TC resistor without affecting it.
【００３９】（実施例４）図３は、第３の実施例である
柔軟性ＰＴＣ発熱体を示す断面説明図である。（ａ）は
平面図、（ｂ）は概略断面図である。前記実施例１の図
１と相違する点は、柔軟性基材１に貫通孔７を設けた点
にある。なお、図３では、柔軟性ＰＴＣ抵抗体５を分割
して設けるとともにその中央に貫通孔７を設けている。
柔軟性ＰＴＣ抵抗体７間に貫通孔７を設けても良いこと
は言うまでもない。貫通孔７により人体への装着時に発
生する湿気を外気に放散させることができて、良好な装
着感とすることができる。また、貫通孔７を利用して柔
軟性ＰＴＣ発熱体の取り付け治具を装着することもでき
る。なお、貫通孔７の周囲は柔軟性基材１のバリアー層
と柔軟性被覆材６とが接触した状態であり、柔軟性電極
や柔軟性ＰＴＣ抵抗体は外気から遮断されている。(Embodiment 4) FIG. 3 is a sectional explanatory view showing a flexible PTC heating element according to a third embodiment. (A) is a plan view and (b) is a schematic sectional view. The difference from the first embodiment shown in FIG. 1 is that the flexible substrate 1 is provided with a through hole 7. In FIG. 3, the flexible PTC resistor 5 is provided separately and a through hole 7 is provided at the center thereof.
It goes without saying that the through hole 7 may be provided between the flexible PTC resistors 7. The through holes 7 allow the moisture generated during mounting on the human body to be dissipated to the outside air, and a good wearing feeling can be obtained. Further, it is possible to mount a flexible PTC heating element mounting jig by utilizing the through hole 7. The periphery of the through hole 7 is in a state where the barrier layer of the flexible base material 1 and the flexible coating material 6 are in contact with each other, and the flexible electrode and the flexible PTC resistor are shielded from the outside air.
【００４０】（実施例５）次に、第４の実施例を示し
た。貫通孔７を吸水・放湿性材料として、例えば、コッ
トンやポリアクリル系繊維織布で被覆している。この構
成により、柔軟性ＰＴＣ抵抗体に水や汗などが付着した
場合に、直ちに全体に拡散するとともに、貫通孔７部よ
り水分を湿気として外部に放散させることができる。ま
た、人体装着時の蒸れを解消できる。こうして、より装
着感を良好にすることができる。(Embodiment 5) Next, a fourth embodiment is shown. The through-hole 7 is covered with a water-absorbing / moisture-releasing material, for example, cotton or polyacrylic fiber woven cloth. With this configuration, when water, sweat or the like adheres to the flexible PTC resistor, it can be immediately diffused to the whole and moisture can be diffused to the outside through the through hole 7 as moisture. Also, it is possible to eliminate stuffiness when worn on the human body. In this way, the wearing feeling can be further improved.
【００４１】（実施例６）図４に、第５の実施例を示し
た。上記実施例では、柔軟性基材上に柔軟性電極、柔軟
性ＰＴＣ抵抗体の順に印刷塗布して形成したが、ここで
は、柔軟性基材上に柔軟性ＰＴＣ抵抗体を作製したのち
に柔軟性電極を形成する。この構成により、柔軟性電極
を印刷塗布する際に塗布面が柔軟性ＰＴＣ抵抗体で被覆
され、平滑性が向上しているので、柔軟性電極の塗布ム
ラを最小限に抑制することができる。(Embodiment 6) FIG. 4 shows a fifth embodiment. In the above example, the flexible electrode and the flexible PTC resistor were printed and applied in this order on the flexible substrate, but here, after the flexible PTC resistor was produced on the flexible substrate, Forming a sex electrode. With this configuration, when the flexible electrode is printed and applied, the application surface is covered with the flexible PTC resistor and the smoothness is improved, so that the application unevenness of the flexible electrode can be minimized.
【００４２】[0042]
【発明の効果】以上述べたように、本発明により、柔軟
性電極と柔軟性ＰＴＣ抵抗体への応力を緩和できるとと
もに両者の相対的な位置関係を保持することができるも
のである。As described above, according to the present invention, the stress on the flexible electrode and the flexible PTC resistor can be relaxed and the relative positional relationship between the two can be maintained.
【図１】本発明の第１の実施例である柔軟性ＰＴＣ発熱
体の構成を示す構成図FIG. 1 is a configuration diagram showing a configuration of a flexible PTC heating element that is a first embodiment of the present invention.
【図２】本発明の第１の実施例の加振評価結果を示す図FIG. 2 is a diagram showing a vibration evaluation result of the first embodiment of the present invention.
【図３】本発明の第２の実施例である柔軟性ＰＴＣ発熱
体の構成図FIG. 3 is a configuration diagram of a flexible PTC heating element which is a second embodiment of the present invention.
【図４】本発明の第３の実施例である柔軟性ＰＴＣ発熱
体の構成図FIG. 4 is a configuration diagram of a flexible PTC heating element which is a third embodiment of the present invention.
【図５】従来のＰＴＣ面状発熱体の構成を示す断面図FIG. 5 is a sectional view showing the structure of a conventional PTC sheet heating element.
１ 柔軟性基材 ２ 含浸保持層 ３ バリアー層 ４ 柔軟性電極 ５ 柔軟性ＰＴＣ抵抗体 ６ 柔軟性被覆材 ７ 貫通孔 1 Flexible base material 2 Impregnation holding layer 3 barrier layers 4 Flexible electrode 5 Flexible PTC resistor 6 Flexible coating 7 through holes
───────────────────────────────────────────────────── フロントページの続き (72)発明者 寺門 誠之 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 金澤 成寿 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 小原 和幸 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 Ｆターム(参考） 3K034 AA05 AA08 AA10 AA15 AA28 AA34 BA08 BA13 BC02 BC16 CA03 CA06 CA14 CA17 CA22 CA32 FA22 HA07 JA01 JA09 3K092 PP15 QA05 QB19 QB20 QB21 QB31 QB65 QB70 QB76 QC07 QC09 QC20 QC25 QC49 RF02 RF14 RF26 SS29 VV03 5E034 AA03 AA08 AB05 AC09 DA02 GA05 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Masayuki Terakado 1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric Sangyo Co., Ltd. (72) Inventor Narutoshi Kanazawa 1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric Sangyo Co., Ltd. (72) Inventor Kazuyuki Ohara 1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric Sangyo Co., Ltd. F term (reference) 3K034 AA05 AA08 AA10 AA15 AA28 AA34 BA08 BA13 BC02 BC16 CA03 CA06 CA14 CA17 CA22 CA32 FA22 HA07 JA01 JA09 3K092 PP15 QA05 QB19 QB20 QB21 QB31 QB65 QB70 QB76 QC07 QC09 QC20 QC25 QC49 RF02 RF14 RF26 SS29 VV03 5E034 AA03 AA08 AB05 AC09 DA02 GA05
Claims (9)
Ｃ抵抗体に給電する柔軟性電極と、表面に前記柔軟性Ｐ
ＴＣ抵抗体及び柔軟性電極を含浸保持する含浸保持層と
裏面にバリアー層を有する柔軟性基材と、前記前記柔軟
性ＰＴＣ抵抗体及び柔軟性電極を被覆する柔軟性被覆材
とからなる柔軟性ＰＴＣ発熱体。1. A flexible PTC resistor and the flexible PT
A flexible electrode for supplying power to the C resistor and the flexible P on the surface
Flexibility comprising an impregnation holding layer for impregnating and holding a TC resistor and a flexible electrode, a flexible base material having a barrier layer on the back surface, and a flexible coating material for coating the flexible PTC resistor and the flexible electrode. PTC heating element.
る樹脂製不織布により、バリアー層は、柔軟性樹脂フィ
ルム、又は柔軟性樹脂系コーティング材で構成してなる
請求項１記載の柔軟性ＰＴＣ発熱体。2. The flexible according to claim 1, wherein the impregnating and holding layer of the flexible base material is made of a resin nonwoven fabric made of long fibers, and the barrier layer is made of a flexible resin film or a flexible resin coating material. PTC heating element.
コーティング材を含浸させてなる請求項１または２記載
の柔軟性ＰＴＣ発熱体。3. The flexible PTC heating element according to claim 1, wherein the impregnation holding layer of the flexible base material is impregnated with a flexible resin coating material.
ィング材として、アクリルニトリル−ブタジエンゴム、
カルボキシル化ニトリルゴム、又はエチレン−酢酸ビニ
ルゴム系ラテックスを用いてなる請求項３記載の柔軟性
ＰＴＣ発熱体。4. Acrylonitrile-butadiene rubber as a flexible resin coating material used for a flexible substrate,
The flexible PTC heating element according to claim 3, wherein the carboxylated nitrile rubber or ethylene-vinyl acetate rubber-based latex is used.
ム、又は柔軟性樹脂系コーティング材を用いてなる請求
項１記載の柔軟性ＰＴＣ発熱体。5. The flexible PTC heating element according to claim 1, wherein a flexible resin film or a flexible resin-based coating material is used as the flexible coating material.
ウレタン樹脂、ポリエステル樹脂、または、アクリル樹
脂を用いてなる請求項５記載の柔軟性ＰＴＣ発熱体。6. The flexible PTC heating element according to claim 5, wherein a polyurethane resin, a polyester resin, or an acrylic resin is used as the resin used for the flexible coating material.
１記載の柔軟性ＰＴＣ発熱体。7. The flexible PTC heating element according to claim 1, wherein the flexible base material has through holes.
放湿性材料で被覆してなる請求項７記載の柔軟性ＰＴＣ
発熱体。8. A water absorbing material for at least the through-hole of the flexible base material.
The flexible PTC according to claim 7, which is coated with a moisture-releasing material.
Heating element.
Ｃ抵抗体を形成し、その上に柔軟性抵抗体を形成してな
る請求項１から４記載の柔軟性ＰＴＣ発熱体。9. A flexible PT is used as an impregnating and holding layer of a flexible base material.
The flexible PTC heating element according to claim 1, wherein a C resistor is formed and a flexible resistor is formed on the C resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002018043A JP2003217904A (en) | 2002-01-28 | 2002-01-28 | Flexible ptc heating element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002018043A JP2003217904A (en) | 2002-01-28 | 2002-01-28 | Flexible ptc heating element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003217904A true JP2003217904A (en) | 2003-07-31 |
Family
ID=27653522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002018043A Pending JP2003217904A (en) | 2002-01-28 | 2002-01-28 | Flexible ptc heating element |
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| Country | Link |
|---|---|
| JP (1) | JP2003217904A (en) |
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