JP2016213016A - Rubber heater and method of manufacturing the same - Google Patents

Rubber heater and method of manufacturing the same Download PDF

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JP2016213016A
JP2016213016A JP2015094281A JP2015094281A JP2016213016A JP 2016213016 A JP2016213016 A JP 2016213016A JP 2015094281 A JP2015094281 A JP 2015094281A JP 2015094281 A JP2015094281 A JP 2015094281A JP 2016213016 A JP2016213016 A JP 2016213016A
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rubber
heater
mold
heated
manufacturing
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JP6541125B2 (en
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聡一郎 伊藤
Soichiro Ito
聡一郎 伊藤
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MIZUHO CRAFT CO Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a rubber heater capable of heating an object to be heated by bringing the object into close contact therewith without a gap in accordance with a shape of the object, and to provide a method of manufacturing the same.SOLUTION: A rubber heater 1 is made of silicon rubber and has a shape matching the surface shape of a radome 100. The rubber heater 1 is made possible to be covered from above the radome 100 so that a gap is not formed. The rubber heater 1 is joined to the radome so that an inner rubber layer and a rubber layer with a heater around which a Nichrome wire 2 is spirally wound at an even interval are overlapped. Both ends of the Nichrome wire 2 are connected to an electric wire 3.SELECTED DRAWING: Figure 1

Description

本発明は、可撓性を有した面状発熱体であるラバーヒータ及びその製造方法に関する。   The present invention relates to a rubber heater which is a planar heating element having flexibility and a method for manufacturing the same.

電気抵抗式ヒータをシリコンゴムやフッ素ゴム等の耐熱ゴムで覆ったラバーヒータは、加熱対象物の表面形状に沿ってフレキシブルに密着させることができるという特性を有している（特許文献１、２参照）。   A rubber heater in which an electric resistance heater is covered with a heat-resistant rubber such as silicon rubber or fluorine rubber has a characteristic that it can be flexibly adhered along the surface shape of an object to be heated (Patent Documents 1 and 2). reference).

特開平９−６３７５５号公報JP-A-9-63755 実用新案登録第３１３３０５１号Utility model registration No. 3133051

しかし、上記従来のラバーヒータでは、小さな曲率半径を有する曲面では、密接させようとしても、皺がよって隙間ができ易いため、均一に加熱することが困難となっていた。   However, in the conventional rubber heater, it is difficult to uniformly heat a curved surface having a small radius of curvature because a gap is easily formed due to wrinkles even if the curved surface is in close contact.

本発明は、上記従来の実情に鑑みてなされたものであり、加熱すべき物体の形状に合わせて隙間なく密着させて均一に加熱することができるラバーヒータ及びその製造方法を提供することを目的とする。   The present invention has been made in view of the above-described conventional situation, and an object of the present invention is to provide a rubber heater that can be heated uniformly by closely adhering to the shape of an object to be heated, and a method for manufacturing the same. And

本発明のラバーヒータは、被加熱物体を加熱するためのラバーヒータであって、該被加熱物体の表面形状に整合した形状を有し、内部に屈曲可能な電気抵抗式ヒータが配設されていることを特徴とする。   The rubber heater of the present invention is a rubber heater for heating an object to be heated, and has a shape that matches the surface shape of the object to be heated, and an electric resistance heater that can be bent is disposed inside. It is characterized by being.

本発明のラバーヒータでは、被加熱物体の表面形状に整合した形状を有しているため、被加熱物体に隙間なく密着させることができ、皺が寄ることがない。そして、この密着状態において電気抵抗式ヒータに通電することにより、被加熱物体を均一に加熱することができる。   Since the rubber heater of the present invention has a shape that matches the surface shape of the object to be heated, it can be brought into close contact with the object to be heated without any gaps, and wrinkles do not approach. And in this close_contact | adherence state, an object to be heated can be heated uniformly by energizing the electric resistance heater.

電気抵抗式ヒータとしては、ラバーヒータが可撓性を発揮できるものであれば特に限定はされない。このような電気抵抗式ヒータとしては、ニクロム等の金属やカーボン等の電気抵抗体を発熱体として用いたヒータを用いることができる。ヒータの形状としては、線形状でもよいし、平面形状であってもよい。また、ラバーの素材としては、例えばシリコンゴムやフッ素ゴム等を用いることができる。機械的強度を高めるために、ゴムを耐熱繊維で強化することも好ましい。耐熱性繊維としては特に限定はないが、例えばガラス繊維を用いることができる。   The electric resistance heater is not particularly limited as long as the rubber heater can exhibit flexibility. As such an electric resistance heater, a heater using a metal such as nichrome or an electric resistor such as carbon as a heating element can be used. The shape of the heater may be a linear shape or a planar shape. As the rubber material, for example, silicon rubber, fluororubber, or the like can be used. In order to increase the mechanical strength, it is also preferable to reinforce the rubber with heat-resistant fibers. Although there is no limitation in particular as a heat resistant fiber, For example, a glass fiber can be used.

本発明のラバーヒータは、次のように製造することができる。
すなわち、本発明のラバーヒータの製造方法は、
被加熱物体を加熱するためのラバーヒータを製造する方法であって、
該被加熱物体と同じ表面形状を有する第１成形型を用意する第１工程と、
該第１成形型の表面を硬化前のゴムで覆う第２工程と、
該硬化前のゴムの表面形状に整合する第２成形型を用意する第３工程と、
該第２成形型の表面を硬化前のゴムで覆った後、該硬化前のゴムの表面に電気抵抗式ヒータを配設する第４工程と、
該電気抵抗式ヒータを硬化前のゴムで覆い、加熱してヒータ付ゴム層とする第５工程と、
該第２成形型から該ヒータ付ゴム層を剥離する第６工程と、
該ヒータ付ゴム層を該第１成形型の表面に覆われた硬化前のゴムに被せ、該硬化前ゴムを硬化させてラバーヒータとする第７工程と
該第１成形型から該ラバーヒータを剥離する第８工程と、
を備えることを特徴とする。 The rubber heater of the present invention can be manufactured as follows.
That is, the manufacturing method of the rubber heater of the present invention is:
A method of manufacturing a rubber heater for heating an object to be heated,
A first step of preparing a first mold having the same surface shape as the object to be heated;
A second step of covering the surface of the first mold with rubber before curing;
A third step of preparing a second mold that matches the surface shape of the rubber before curing;
A fourth step of disposing an electric resistance heater on the surface of the rubber before curing after covering the surface of the second mold with rubber before curing;
Covering the electric resistance heater with rubber before curing and heating to form a rubber layer with a heater;
A sixth step of peeling the rubber layer with a heater from the second mold;
The rubber layer with a heater is covered with an uncured rubber covered on the surface of the first mold, and the rubber rubber is cured from the first mold by curing the uncured rubber to form a rubber heater. An eighth step of peeling;
It is characterized by providing.

ここで、硬化前のゴムとしては、熱及び／又は経時変化によって硬化するものであれば、特に限定はない。例えば、硬化前のゴム板材や、硬化前の液状のゴムや、硬化前のゲル状のゴム等が挙げられる。また、硬化前のゴムとしては常温硬化型や加熱硬化型のものを用いることができる。さらに、ゴムの素材としては、シリコン系ゴムの他、フッ素系ゴムを用いることもできる。   Here, the rubber before curing is not particularly limited as long as it is cured by heat and / or change with time. Examples thereof include a rubber plate material before curing, a liquid rubber before curing, and a gel rubber before curing. Moreover, as the rubber before curing, a normal temperature curing type or a heat curing type can be used. Further, as the rubber material, fluorine rubber can be used in addition to silicon rubber.

本発明のラバーヒータの製造方法では、
第２成形型に電気抵抗式ヒータを配設するための治具を設けられていることが好ましい。こうであれば、電気抵抗式ヒータを配設することがより容易となる。この場合の治具としては、例えば、第２成形型に立設された複数の案内ピンを治具とし、これに電気抵抗式ヒータを巻き付けたてもよい。 In the rubber heater manufacturing method of the present invention,
It is preferable that a jig for arranging an electric resistance heater is provided in the second mold. This makes it easier to dispose the electric resistance heater. As a jig in this case, for example, a plurality of guide pins erected on the second mold may be used as a jig, and an electric resistance heater may be wound around this.

[実施例１]
実施例１のラバーヒータは、レドームの補修用に用いられるものである。レドームとは飛行機の先端を覆う砲弾形状のカバーのことであり、内部にはレーダ装置が設置されている。このため、レドームは電波が透過可能なように、ガラス繊維強化エポキシからできている。レドームに小石や鳥が当たって表面に傷がついた場合、これを補修する必要がある。補修の方法としては、傷部分を研磨した後、硬化前のガラス繊維強化エポキシで覆い、表面から加熱して硬化させることにより行う。実施例１のラバーヒータは、この時の加熱用に用いられるものである。 [Example 1]
The rubber heater of Example 1 is used for repairing a radome. A radome is a shell-shaped cover that covers the tip of an airplane, and a radar device is installed inside. For this reason, the radome is made of glass fiber reinforced epoxy so that radio waves can be transmitted. If the radome hits the surface with pebbles or birds, it will need to be repaired. As a repair method, after the scratched portion is polished, it is covered with glass fiber reinforced epoxy before curing, and is heated and cured from the surface. The rubber heater of Example 1 is used for heating at this time.

図１に示すように、実施例１のラバーヒータ１はシリコンゴムからなり、レドーム１００の表面形状に整合した形状とされており（図１左上）、レドーム１００の上から隙間がないように被せることが可能とされている（図１右側）。ラバーヒータ１は、図２に示すように、内側ゴム層１ａと、ニクロム線２が螺旋状に等間隔で巻かれたヒータ付ゴム層１ｂとが重なるように接合されている。ニクロム線２の両端は電線３に接続されている。   As shown in FIG. 1, the rubber heater 1 according to the first embodiment is made of silicon rubber and has a shape that matches the surface shape of the radome 100 (upper left of FIG. 1), and covers the radome 100 so that there is no gap. Is possible (right side of FIG. 1). As shown in FIG. 2, the rubber heater 1 is joined so that an inner rubber layer 1a and a rubber layer 1b with a heater in which nichrome wires 2 are spirally wound at equal intervals overlap each other. Both ends of the nichrome wire 2 are connected to the electric wire 3.

＜ラバーヒータの製造方法＞
このラバーヒータ１は次のようにして製造される。
（第１工程）
第１工程として、図３（ａ）に示すように、レドーム１００の表面と同じ表面形状を有する帽子形状の第１成形型４を用意する。
（第２工程）
次に、第２工程として、図３（ｂ）に示すように、第１成形型４の表面に扇型形状の加硫前ゴム板５を複数枚用意し、隙間のないように布設する。ここで加硫前ゴム板５が硬化前のゴムである。なお、加硫前ゴム板の替りに硬化前の液状あるいはゲル状のシリコンゴムを用いることもできる。
（第３工程）
一方、第１成形型４とは別に、第２工程後の布設された加硫前ゴム板５の表面形状に整合する第２成形型６を用意する（図４（ｃ）参照）。
（第４工程）
第２成形型６の表面に複数の凹部７を設け（図４（ｄ）参照）、凹部７に案内ピン８の一端を嵌合し他端を突出させた後、案内ピン８間に扇形状の加硫前ゴム板９を複数枚用意し、布設する（図４（ｅ）参照）。ここで加硫前ゴム板９が硬化前のゴムである。なお、加硫前ゴム板の替りに硬化前の液状あるいはゲル状のシリコンゴムを用いることもできる。
そして、案内ピン８に沿ってニクロム線１０を巻き付けてゆき、ニクロム線１０の末端に電線３を接続させる（図４（ｆ）参照）。
（第５工程）
さらに、ニクロム線１０の上から扇形状の加硫前ゴム板１１を複数枚用意し、布設（図４（ｇ）参照）する。そして、真空加熱炉中で加熱することにより加硫前ゴム板１１を加硫して、ヒータ付ゴム層１２とする。ここで加硫前ゴム板１１が硬化前のゴムである。なお、加硫前ゴム板の替りに硬化前の液状あるいはゲル状のシリコンゴムを用いることもできる。
（第６工程）
そして、第２成形型からヒータ付ゴム層１２（図５上側）を剥離する。
（第７工程）
さらに、図５に示すように、ヒータ付ゴム層を第２工程終了後の加硫前ゴム板５の上に被せる。そして、真空加熱炉で加熱することによりヒータ付ゴム層１２を加硫前ゴム板５に接着させる。なお、加硫前ゴム板５の替りに液状やゲル状の常温硬化型シリコンを使用すれば、真空加熱炉を使用しないで接着することが可能となる。
（第８工程）
最後に、第１成形型４からラバーヒータ１を剥離する、こうして図１左上に示す実施例１のラバーヒータ１を得る。 <Rubber heater manufacturing method>
The rubber heater 1 is manufactured as follows.
(First step)
As a first step, as shown in FIG. 3A, a hat-shaped first molding die 4 having the same surface shape as the surface of the radome 100 is prepared.
(Second step)
Next, as a second step, as shown in FIG. 3 (b), a plurality of fan-shaped pre-vulcanized rubber plates 5 are prepared on the surface of the first mold 4 and laid so that there are no gaps. Here, the rubber plate 5 before vulcanization is the rubber before curing. Instead of the rubber plate before vulcanization, liquid or gel silicon rubber before curing can be used.
(Third step)
On the other hand, separately from the first mold 4, a second mold 6 that matches the surface shape of the pre-vulcanized rubber plate 5 provided after the second step is prepared (see FIG. 4C).
(4th process)
A plurality of recesses 7 are provided on the surface of the second mold 6 (see FIG. 4D). One end of the guide pin 8 is fitted into the recess 7 and the other end is projected, and then a fan shape is formed between the guide pins 8. A plurality of pre-vulcanized rubber plates 9 are prepared and installed (see FIG. 4E). Here, the rubber plate 9 before vulcanization is the rubber before curing. Instead of the rubber plate before vulcanization, liquid or gel silicon rubber before curing can be used.
And the nichrome wire 10 is wound along the guide pin 8, and the electric wire 3 is connected to the terminal of the nichrome wire 10 (refer FIG.4 (f)).
(5th process)
Further, a plurality of fan-shaped pre-vulcanized rubber plates 11 are prepared from above the nichrome wire 10 and installed (see FIG. 4G). Then, the rubber plate 11 before vulcanization is vulcanized by heating in a vacuum heating furnace to obtain a rubber layer 12 with a heater. Here, the rubber plate 11 before vulcanization is the rubber before curing. Instead of the rubber plate before vulcanization, liquid or gel silicon rubber before curing can be used.
(6th process)
And the rubber layer 12 with a heater (FIG. 5 upper side) is peeled from a 2nd shaping | molding die.
(Seventh step)
Further, as shown in FIG. 5, a rubber layer with a heater is placed on the rubber plate 5 before vulcanization after the second step. And the rubber layer 12 with a heater is adhere | attached on the rubber plate 5 before vulcanization by heating with a vacuum heating furnace. In addition, if liquid or gel room temperature curing type silicon is used instead of the rubber plate 5 before vulcanization, it is possible to bond without using a vacuum heating furnace.
(8th step)
Finally, the rubber heater 1 is peeled from the first mold 4, thus obtaining the rubber heater 1 of Example 1 shown in the upper left of FIG. 1.

＜ラバーヒータの使用方法＞
以上のように構成された実施例１のラバーヒータ１の使用方法について説明する。
レドーム１００の破損部１００ａ（図６ａ参照）をグラインダーで削った後、やすりを用いて研磨し、研摩部１００ｂとする（図６ｂ）。そして研摩部１００ｂの形状よりも少し大きめに補修用の硬化前ガラス繊維強化エポキシ部材２０を切り出し、研摩部１００ｂ上に載置する（図６ｃ）。そして、図示しない離形用のフッ素樹脂膜でレドーム１００の全体を覆ってから、実施例１１のラバーヒータ１をレドーム１００に被せる（図６ｄ）。そして、図示しないバキュームバッグによって減圧する。これにより、ラバーヒータ１の内側が減圧され、大気圧によってラバーヒータ１が硬化前ガラス繊維強化エポキシ部材２０を圧縮する（図６ｅ）。 <Usage of rubber heater>
The usage method of the rubber heater 1 of Example 1 comprised as mentioned above is demonstrated.
The damaged portion 100a (see FIG. 6a) of the radome 100 is shaved with a grinder and then polished with a file to form a polished portion 100b (FIG. 6b). Then, the pre-curing glass fiber reinforced epoxy member 20 for repair is cut out slightly larger than the shape of the polishing portion 100b and placed on the polishing portion 100b (FIG. 6c). And after covering the whole radome 100 with the fluororesin film | membrane for mold release which is not shown in figure, the rubber heater 1 of Example 11 is covered on the radome 100 (FIG. 6d). And it decompresses with the vacuum bag which is not illustrated. Thereby, the inside of the rubber heater 1 is depressurized, and the rubber heater 1 compresses the pre-curing glass fiber reinforced epoxy member 20 by the atmospheric pressure (FIG. 6e).

そして、ニクロム線１０に通電し、加熱する。こうしてラバーヒータ１によって硬化前ガラス繊維強化エポキシ部材２０を押し付けながら加熱することにより、硬化前ガラス繊維強化エポキシ部材２０は重合して研摩部１００ｂに確実に接着される。こうして接着を行なった後、真空ポンプによる排気及びラバーヒータ１への通電を停止し、ラバーヒータ１を撤去し、表面をグラインダーや紙やすりで研磨して修理が完了する。
このラバーヒータ１は、レドーム１００の表面形状に整合する形状とされているため、レドーム１００の表面全体に密着して均一に加熱することができるため、補修箇所における硬化前ガラス繊維強化エポキシ部材２０の重合反応もムラなく均一に行うことができる。このため、補修の信頼性も高いものとなる。また、ニクロム線１０の両側からシリコンゴムによって挟まれた形状とされており、均一な厚さを有しているため、折れ曲がりやすい部分がなく、ニクロム線１０が断線し難い。 Then, the nichrome wire 10 is energized and heated. In this way, by heating the glass fiber reinforced epoxy member 20 before being pressed by the rubber heater 1, the glass fiber reinforced epoxy member 20 before curing is polymerized and securely bonded to the polishing portion 100b. After bonding in this manner, exhaust by the vacuum pump and energization to the rubber heater 1 are stopped, the rubber heater 1 is removed, and the surface is polished with a grinder or sandpaper to complete the repair.
Since the rubber heater 1 has a shape that matches the surface shape of the radome 100, the rubber heater 1 can be in close contact with the entire surface of the radome 100 and heated uniformly. The polymerization reaction can be carried out uniformly without unevenness. For this reason, the reliability of repair is also high. Moreover, since it has a shape sandwiched by silicon rubber from both sides of the nichrome wire 10 and has a uniform thickness, there is no portion that is easily bent, and the nichrome wire 10 is difficult to break.

[比較例１]
比較例１のラバーヒータは、実施例１における第３工程から第６工程を行って得られたヒータ付ゴム層（図５上側）であり、実施例１における第７工程は行われていない。このため、案内ピン８が嵌合されていた部分はゴムが薄くなっており、その部分で屈曲し易く、ニクロム線が断線しやすい。また、このラバーヒータを用いて加熱する際、加熱が不均一となりやすい。 [Comparative Example 1]
The rubber heater of Comparative Example 1 is a rubber layer with a heater (upper side in FIG. 5) obtained by performing the third to sixth steps in Example 1, and the seventh step in Example 1 is not performed. For this reason, the rubber portion is thin at the portion where the guide pin 8 is fitted, and it is easy to bend at that portion, and the nichrome wire is easily broken. Further, when heating is performed using this rubber heater, the heating tends to be non-uniform.

この発明は上記発明の実施の態様及び実施例の説明に何ら限定されるものではない。特許請求の範囲を逸脱せず、当業者が容易に想到できる範囲で種々の変形態様もこの発明に含まれる。   The present invention is not limited to the description of the embodiments and examples of the invention described above. Various modifications are also included in the present invention as long as those skilled in the art can easily conceive without departing from the scope of the claims.

本発明のラバーヒータは、加熱すべき物体の形状に合わせて隙間なく密着させて均一に加熱することができる。このため、ＦＲＰの破損個所の硬化前ガラス繊維強化エポキシを用いた修理や、ＦＲＰ成形品の作製に等に好適に用いることができる。   The rubber heater of the present invention can be heated uniformly by closely contacting with the shape of the object to be heated. For this reason, it can use suitably for the repair using the glass fiber reinforcement | strengthening epoxy before hardening of the broken part of FRP, preparation of a FRP molded product, etc.

１…ラバーヒータ
１００…レドーム（被加熱物体）
１ａ…内側ゴム層
１ｂ…ヒータ付ゴム層
４…第１成形型
６…第２成形型
５，９…加硫前ゴム板（硬化前のゴム）
８…案内ピン（治具）
１０…ニクロム線（電気抵抗式ヒータ） 1 ... Rubber heater 100 ... Radome (object to be heated)
DESCRIPTION OF SYMBOLS 1a ... Inner rubber layer 1b ... Rubber layer with a heater 4 ... 1st shaping | molding die 6 ... 2nd shaping | molding die 5, 9 ... Rubber plate before vulcanization (rubber before hardening)
8 ... Guide pins (jigs)
10 ... Nichrome wire (electric resistance heater)

実施例１のラバーヒータ１の使用状態を示す斜視図である。It is a perspective view which shows the use condition of the rubber heater 1 of Example 1. FIG. 実施例１のラバーヒータ１の一部断面図である。1 is a partial cross-sectional view of a rubber heater 1 according to a first embodiment. 実施例１のラバーヒータ１を製造するときの第1工程及び第２工程を示す斜視図である。It is a perspective view which shows the 1st process when manufacturing the rubber heater 1 of Example 1, and a 2nd process. 実施例１のラバーヒータ１を製造するときの第３工程〜第６工程までを示す図である。It is a figure which shows from the 3rd process to the 6th process when manufacturing the rubber heater 1 of Example 1. FIG. 実施例１のラバーヒータ１を製造するときの第７工程及び第８工程までを示す斜視図である。It is a perspective view which shows to the 7th process and 8th process when manufacturing the rubber heater 1 of Example 1. FIG. 実施例１のラバーヒータ１によるレドーム１００の修理方法を示す斜視図である。It is a perspective view which shows the repair method of the radome 100 by the rubber heater 1 of Example 1. FIG.

Claims (4)

被加熱物体を加熱するためのラバーヒータであって、
該被加熱物体の表面形状に整合した形状を有し、内部に屈曲可能な電気抵抗式ヒータが配設されていることを特徴とするラバーヒータ。 A rubber heater for heating an object to be heated,
A rubber heater having a shape matched to the surface shape of the object to be heated and having a bendable electric resistance heater disposed therein. 被加熱物体を加熱するためのラバーヒータを製造する方法であって、
該被加熱物体と同じ表面形状を有する第１成形型を用意する第１工程と、
該第１成形型の表面を硬化前のゴムで覆う第２工程と、
該硬化前のゴムの表面形状に整合する第２成形型を用意する第３工程と、
該第２成形型の表面を硬化前のゴムで覆った後、該硬化前のゴムの表面に電気抵抗式ヒータを配設する第４工程と、
該電気抵抗式ヒータを硬化前のゴムで覆い、加熱してヒータ付ゴム層とする第５工程と、
該第２成形型から該ヒータ付ゴム層を剥離する第６工程と、
該ヒータ付ゴム層を該第１成形型の表面に覆われた硬化前のゴムに被せ、該硬化前ゴムを硬化させてラバーヒータとする第７工程と
該第１成形型から該ラバーヒータを剥離する第８工程と、
を備えるラバーヒータの製造方法。 A method of manufacturing a rubber heater for heating an object to be heated,
A first step of preparing a first mold having the same surface shape as the object to be heated;
A second step of covering the surface of the first mold with rubber before curing;
A third step of preparing a second mold that matches the surface shape of the rubber before curing;
A fourth step of disposing an electric resistance heater on the surface of the rubber before curing after covering the surface of the second mold with rubber before curing;
Covering the electric resistance heater with rubber before curing and heating to form a rubber layer with a heater;
A sixth step of peeling the rubber layer with a heater from the second mold;
The rubber layer with a heater is covered with an uncured rubber covered on the surface of the first mold, and the rubber rubber is cured from the first mold by curing the uncured rubber to form a rubber heater. An eighth step of peeling;
A method for manufacturing a rubber heater. 前記第２成形型には電気抵抗式ヒータを配設するための治具が設けられていることを特徴とする請求項２記載のラバーヒータの製造方法   The rubber heater manufacturing method according to claim 2, wherein a jig for arranging an electric resistance heater is provided in the second mold. 前記治具は前記第２成形型に立設された複数の案内ピンからなることを特徴とする請求項２又は３に記載のラバーヒータの製造方法。   The rubber heater manufacturing method according to claim 2 or 3, wherein the jig includes a plurality of guide pins provided upright on the second molding die.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0785953A (en) * 1993-09-13 1995-03-31 Sanyo Electric Co Ltd Manufacture of heater
JP3035715U (en) * 1996-09-13 1997-04-04 株式会社ギャロップ Warm gloves
JP2002093553A (en) * 2000-09-11 2002-03-29 Sakaguchi Dennetsu Kk Heater device
JP3153158U (en) * 2009-05-29 2009-08-27 勲 更科 Floor heating tatami
JP2010003464A (en) * 2008-06-18 2010-01-07 Sakaguchi Dennetsu Kk Tape-shaped heater, and manufacturing method thereof
US20110024568A1 (en) * 2007-10-18 2011-02-03 Anthony Edward Bardwell Structural bonding arrangement

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0785953A (en) * 1993-09-13 1995-03-31 Sanyo Electric Co Ltd Manufacture of heater
JP3035715U (en) * 1996-09-13 1997-04-04 株式会社ギャロップ Warm gloves
JP2002093553A (en) * 2000-09-11 2002-03-29 Sakaguchi Dennetsu Kk Heater device
US20110024568A1 (en) * 2007-10-18 2011-02-03 Anthony Edward Bardwell Structural bonding arrangement
JP2010003464A (en) * 2008-06-18 2010-01-07 Sakaguchi Dennetsu Kk Tape-shaped heater, and manufacturing method thereof
JP3153158U (en) * 2009-05-29 2009-08-27 勲 更科 Floor heating tatami

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