JP2010246755A - Magnetic therapy device and method for manufacturing the same - Google Patents

Magnetic therapy device and method for manufacturing the same Download PDF

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JP2010246755A
JP2010246755A JP2009099840A JP2009099840A JP2010246755A JP 2010246755 A JP2010246755 A JP 2010246755A JP 2009099840 A JP2009099840 A JP 2009099840A JP 2009099840 A JP2009099840 A JP 2009099840A JP 2010246755 A JP2010246755 A JP 2010246755A
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rubber
magnetic
weight
therapy device
magnetic therapy
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Yoshiaki Maeda
義明 前田
Keiichi Miyajima
慶一 宮嶋
Hiroki Yamamoto
博樹 山本
Tomoko Nakano
登茂子 中野
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Nok Corp
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Nok Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To retain a mechanical strength enduring heavy uses even if filled with a necessary amount of magnetic powder for improving a magnetic flux density. <P>SOLUTION: This string-like magnetic therapy device for use in a necklace or the like, is formed from a mixture of a rubber elastic material and the magnetic powder, and the mixture is formed by adding 450-1,000 pts.wt. of the magnetic powder based on 100 pts.wt. of the rubber mixture which is composed of 70-95 wt.% of solid rubber and 30-5 wt.% of liquid rubber capable of reacting to the solid rubber. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、磁気治療器具及びその製造方法に係り、更に詳しくは、本発明は、血行促進作用等を有する磁気治療器具に関する。   The present invention relates to a magnetic therapy device and a method of manufacturing the same, and more particularly, the present invention relates to a magnetic therapy device having a blood circulation promoting action and the like.

従来、永久磁石材料とゴム、樹脂およびエラストマー等からなる弾性材料とを組合せたブレスレット、ネックレス、アンクレットおよびその他紐状の磁気治療器具がある。
これら磁気治療器具は、永久磁石材料をゴム、樹脂およびエラストマー等中に配置し形成する方法と、フェライト粉等の磁性粉をゴム、樹脂等のエラストマー等と混ぜ合せて成形後、磁性化する方法の2種類に大別される。
Conventionally, there are bracelets, necklaces, anklets, and other string-like magnetic therapy devices in which a permanent magnet material is combined with an elastic material made of rubber, resin, elastomer, or the like.
These magnetic treatment devices are a method of forming a permanent magnet material by placing it in rubber, resin, elastomer, etc., and a method of magnetizing after mixing magnetic powder such as ferrite powder with elastomer such as rubber, resin, etc. There are two main types.

しかし前者の場合、永久磁石材料をゴム、樹脂およびエラストマー等中に配置、被覆する必要があり、磁石の位置決めが難しく量産性に乏しく、また磁石の無い部分では血行促進効果がみられないという問題を生じる。(特許文献1)
また、後者の場合、磁石が表面に露出するため、皮膚への影響を考慮して、何らかの手段で被覆する必要があった。
このため、シリコーンゴムにフェライト粉等の磁性粉を混合した内層を、シリコーンゴム単体の外層で被覆する手法が提案されている。(特許文献2)
However, in the former case, it is necessary to dispose and cover the permanent magnet material in rubber, resin, elastomer, etc., and it is difficult to position the magnet and the mass productivity is poor, and the blood circulation promoting effect is not seen in the part without the magnet Produce. (Patent Document 1)
In the latter case, since the magnet is exposed on the surface, it is necessary to cover it with some means in consideration of the influence on the skin.
For this reason, a technique has been proposed in which an inner layer in which magnetic powder such as ferrite powder is mixed with silicone rubber is covered with an outer layer of silicone rubber alone. (Patent Document 2)

しかし、この種の製品は、製法が複雑なばかりでなく、磁束密度を高める為に磁性粉の充填量を増やすと、機械的強度が低下し、逆に、使用に耐える機械的強度を維持する為には、磁性粉の充填量が制限され、満足出来る磁束密度が得られない問題を惹起した。   However, this type of product not only has a complicated manufacturing method, but if the amount of magnetic powder is increased to increase the magnetic flux density, the mechanical strength decreases, and conversely, the mechanical strength that can withstand use is maintained. Therefore, the filling amount of the magnetic powder is limited, causing a problem that a satisfactory magnetic flux density cannot be obtained.

特開2008−253636号公報JP 2008-253636 A 特開2008−173405号公報JP 2008-173405 A 実用新案登録第3022662号公報Utility Model Registration No. 3022662

このような磁気治療器具は、磁束密度を高める為に必要な量の磁性粉を充填しても、使用に耐える機械的強度を維持することが可能なことを目的としている。   The purpose of such a magnetic therapy device is to maintain a mechanical strength that can withstand use even when it is filled with a magnetic powder in an amount necessary for increasing the magnetic flux density.

本発明の磁気治療器具は、ネックレス等に用いられるゴム状弾性材と磁性粉との混合物により形成される紐状の磁気治療器具において、前記混合物が、固形ゴム70〜95重量%および固形ゴムと反応し得る液状ゴム30〜5重量%よりなるゴム混合物100重量部に対し、450〜1000重量部の磁性粉を添加したものであることを特徴とする。   The magnetic treatment device of the present invention is a string-like magnetic treatment device formed of a mixture of a rubber-like elastic material used for necklaces and the like and magnetic powder, wherein the mixture comprises 70 to 95% by weight of solid rubber and solid rubber. It is characterized by adding 450 to 1000 parts by weight of magnetic powder to 100 parts by weight of a rubber mixture comprising 30 to 5% by weight of a liquid rubber that can react.

本発明は、以下に記載されるような効果を奏する。
請求項1記載の発明の磁気治療器具によれば、磁束密度を高める為に必要な量の磁性粉を充填しても、使用に耐える機械的強度を維持することが可能である。
また、請求項2記載の発明の磁気治療器具によれば、加工性が容易である。
The present invention has the following effects.
According to the magnetic treatment instrument of the first aspect of the present invention, it is possible to maintain the mechanical strength that can withstand use even when the magnetic powder is filled in an amount necessary for increasing the magnetic flux density.
Moreover, according to the magnetic treatment instrument of the invention of Claim 2, workability is easy.

更に、請求項3記載の発明の磁気治療器具によれば、磁性粉本来の高い磁力を維持しながら、ゴム本来の物性を損なうことが無い。   Furthermore, according to the magnetic treatment instrument of the invention described in claim 3, the original physical properties of the rubber are not impaired while maintaining the magnetic force inherent to the magnetic powder.

更にまた、請求項4記載の発明の磁気治療器具によれば、皮脂による劣化が起きず、寒冷地での使用にも耐えることが出来る。
更に、請求項5記載の発明の磁気治療器具によれば、可塑性を維持しつつ、良好な強度を保持することが出来る。
Furthermore, according to the magnetic therapy device of the invention described in claim 4, deterioration due to sebum does not occur, and it can be used even in cold regions.
Furthermore, according to the magnetic treatment instrument of the invention described in claim 5, it is possible to maintain good strength while maintaining plasticity.

更にまた、請求項6記載の発明の磁気治療器具によれば、より優れた可塑性を維持しつつ、良好な強度を保持することが出来る。
また、請求項7記載の発明の磁気治療器具によれば、コストが安く、ゴムとの密着性が良い。
また、請求項8記載の発明の磁気治療器具によれば、より強い磁束密度の製品が得られる。
Furthermore, according to the magnetic treatment instrument of the invention described in claim 6, it is possible to maintain good strength while maintaining more excellent plasticity.
Moreover, according to the magnetic treatment instrument of the invention described in claim 7, the cost is low and the adhesion to rubber is good.
Moreover, according to the magnetic treatment instrument of the invention of claim 8, a product having a stronger magnetic flux density can be obtained.

また、請求項9記載の発明の磁気治療器具によれば、皮膚の弱い人にも、好適に用いられる。
また、請求項10記載の発明の磁気治療器具によれば、簡単な設備で、磁性粉を高充填出来る。
Moreover, according to the magnetic treatment instrument of the invention of claim 9, it can be suitably used for a person with weak skin.
Moreover, according to the magnetic treatment instrument of the invention described in claim 10, the magnetic powder can be highly filled with simple equipment.

以下、本発明を実施するための最良の形態について説明する。
本発明に係る磁気治療器具は、ネックレス等に用いられるゴム状弾性材と磁性粉との混合物により形成される紐状の磁気治療器具において、前記混合物が、固形ゴム70〜95重量%および固形ゴムと反応し得る液状ゴム30〜5重量%よりなるゴム混合物100重量部に対し、450〜1000重量部の磁性粉を添加したものである。
Hereinafter, the best mode for carrying out the present invention will be described.
The magnetic therapeutic device according to the present invention is a string-shaped magnetic therapeutic device formed of a mixture of a rubber-like elastic material used for necklaces and the like and magnetic powder, wherein the mixture contains 70 to 95% by weight of solid rubber and solid rubber. 450 to 1000 parts by weight of magnetic powder is added to 100 parts by weight of a rubber mixture comprising 30 to 5% by weight of a liquid rubber capable of reacting with.

この固形ゴムとしては、求められる用途に応じてニトリルゴム(NBR)、アクリルゴム(ACM)、アクリル酸エチルーエチレン共重合ゴム(AEM)、エチレンプロピレン系共重合ゴム(EPDM)、フッ素ゴム(FKM)などが用いられるが、好ましくはコストの面からNBR、ACM、AEM、EPDMが、より好ましくは磁性粉を高充填しやすいことからNBRが用いられる。   As this solid rubber, nitrile rubber (NBR), acrylic rubber (ACM), ethyl acrylate-ethylene copolymer rubber (AEM), ethylene propylene copolymer rubber (EPDM), fluoro rubber (FKM) are used according to the required application. However, NBR, ACM, AEM, and EPDM are preferably used from the viewpoint of cost, and NBR is preferably used because it is easy to highly fill magnetic powder.

そして、この種固形NBRとしては、耐油性と低温性のバランスから、好ましくはニトリル含量が35〜45%、さらに好ましくは38〜42%のものが用いられ、これは市販されているものをそのまま用いることができる。ニトリル含量がこれ以下のものを用いると耐油性が悪化し、一方、ニトリル含量がこれ以上のものを用いると低温性が悪化するようになる。   And as this kind solid NBR, from the balance of oil resistance and low-temperature property, the nitrile content is preferably 35 to 45%, more preferably 38 to 42%, which is a commercially available one as it is. Can be used. When the nitrile content is lower than this, the oil resistance is deteriorated. On the other hand, when the nitrile content is higher than this, the low temperature property is deteriorated.

また、固形ゴムと反応し得る液状ゴムは、用いられる固形ゴムと同様または類似の構造を有し、同一の加硫剤で共架橋できる液状ゴムであり、固形ゴムの選択に応じて液状NBR、液状EPDM、液状FKMなどが用いられ、好ましくはB型粘度(70℃)で4000〜20000cpsのものが、さらに好ましくは4500〜15000cpsのものが用いられる。   The liquid rubber capable of reacting with the solid rubber is a liquid rubber that has the same or similar structure as the solid rubber used and can be co-crosslinked with the same vulcanizing agent. Liquid EPDM, liquid FKM, etc. are used, preferably those having a B-type viscosity (70 ° C.) of 4000-20000 cps, more preferably 4500-15000 cps are used.

この固形ゴムがNBRの場合に用いられる液状NBRとしては、B型粘度(70℃)で4000〜8000cpsでニトリル含量26〜32%のものが好ましく、さらに好ましくはB型粘度(70℃)で4500〜7000cpsかつニトリル量28〜30%のものが用いられ、これも市販されているものをそのまま用いることができきる。
B型粘度がこれ以下のものを用いると加硫物の強度が低下し、一方B型粘度がこれ以上のものを用いると可塑性がなくなる。
また、ニトリル含量がこれ以下のものを用いると耐油性が悪化し、一方ニトリル含量がこれ以上のものを用いると低温性が悪化するようになる。
The liquid NBR used when this solid rubber is NBR is preferably 4000 to 8000 cps with a B-type viscosity (70 ° C.) and a nitrile content of 26 to 32%, more preferably 4500 with a B-type viscosity (70 ° C.). Those having a viscosity of ˜7000 cps and a nitrile amount of 28% to 30% can be used, and those commercially available can be used as they are.
If the B type viscosity is less than this, the strength of the vulcanizate is lowered, while if the B type viscosity is higher than this, the plasticity is lost.
Further, if a nitrile content is less than this, the oil resistance is deteriorated, whereas if a nitrile content is more than this, the low temperature property is deteriorated.

これらの固形ゴムと固形ゴムと反応しうる液状ゴムとは、固形ゴムが70〜95重量%にたいして固形ゴムと反応し得る液状ゴムが30〜5重量%、好ましくは固形ゴムが80〜93重量%に対して固形ゴムと反応し得る液状ゴムが20〜7重量%の割合で用いられる。
液状ゴムが5重量%以下で用いられると固形ゴムと反応し得る液状ゴムの添加効果が低くなり、一方30重量%より多い割合で用いられると、生地の粘度が低くなりすぎて加工性が悪くなる。
The solid rubber and the liquid rubber capable of reacting with the solid rubber are 70 to 95% by weight of the solid rubber, 30 to 5% by weight of the liquid rubber capable of reacting with the solid rubber, and preferably 80 to 93% by weight of the solid rubber. The liquid rubber capable of reacting with the solid rubber is used in a proportion of 20 to 7% by weight.
When the liquid rubber is used at 5% by weight or less, the effect of adding the liquid rubber capable of reacting with the solid rubber is lowered. On the other hand, when it is used at a ratio of more than 30% by weight, the viscosity of the dough becomes too low and the processability is poor. Become.

磁性粉としては、一般にフェライト磁石や希土類磁石が少なくとも一種用いられるが、好ましくはコストが安いことおよびゴムとの密着性がよいことより、磁力は希土類磁石にくらべると低いもののフェライト磁石が用いられ、さらに好ましくは磁力の観点からス
トロンチウムフェライトSrO・6Fe2O3またはバリウムフェライト BaO・6Fl2O3が用いられる。
これらの磁性粉は、磁性粉20gに5重量%PVA水溶液1.5mlを加えて直径2
5.4mmの円筒金型に入れ、1トン/cm2の圧力で加圧成形して試料を作成し、直流磁化測定機で残留磁束密度Brと保持力iHcを測定したときの圧粉磁性で、Brが1600(G)以上で、iHcが3000(Oe)以上のものを用いることが好ましい。
As the magnetic powder, at least one kind of ferrite magnet or rare earth magnet is generally used. Preferably, a ferrite magnet having a lower magnetic force than a rare earth magnet is used because of its low cost and good adhesion to rubber. More preferably, strontium ferrite SrO.6Fe2O3 or barium ferrite BaO.6Fl2O3 is used from the viewpoint of magnetic force.
These magnetic powders have a diameter of 2 by adding 1.5 ml of 5 wt% PVA aqueous solution to 20 g of magnetic powder.
In a 5.4 mm cylindrical mold, a sample was prepared by pressure molding at a pressure of 1 ton / cm 2, and the dust magnetism when the residual magnetic flux density Br and the holding force iHc were measured with a DC magnetometer, It is preferable to use a material having Br of 1600 (G) or more and iHc of 3000 (Oe) or more.

これらの磁性粉は、ゴム混合物100重量部に対して、450〜1000重量部、好ましくは600〜900重量部の割合で用いられる。
これより少ない割合で用いられると、磁気治療器具としての磁力が十分でなくなり、一方これより多い割合で用いられると、成形物の柔軟性が著しく悪化するようになる。
These magnetic powders are used in a proportion of 450 to 1000 parts by weight, preferably 600 to 900 parts by weight, with respect to 100 parts by weight of the rubber mixture.
If it is used at a lower ratio, the magnetic force as a magnetic therapy device is not sufficient, while if it is used at a higher ratio, the flexibility of the molded product is significantly deteriorated.

以上のゴム組成物には、必要に応じて、補強材、老化防止剤、可塑剤、加工助剤、架橋剤、架橋助剤などが配合されて用いられ、その加硫は、用いられるゴムについて行われている通常の方法に従って行われる。
この様に、固形ゴムと反応し得る液状ゴムを配合することによって、磁性粉本来の高い磁力を保持しながら、かつゴム本来の物性を損なうことなく、ゴムコンパウンドの粘度を低く抑え、加工性を改良し、耐熱性および成形性の柔軟性を保つことができる。
このゴム組成物は、磁気治療器具として、好適に用いられる。
In the above rubber composition, if necessary, a reinforcing material, an anti-aging agent, a plasticizer, a processing aid, a cross-linking agent, a cross-linking aid and the like are blended and used, and the vulcanization is performed on the rubber to be used. It is carried out according to the usual methods that have been carried out.
In this way, by blending liquid rubber that can react with solid rubber, the viscosity of the rubber compound is kept low, while maintaining the original high magnetic force of the magnetic powder and without impairing the original physical properties of the rubber. It is possible to improve and maintain flexibility of heat resistance and moldability.
This rubber composition is suitably used as a magnetic therapy device.

また、本発明に係る磁気治療器具の製造方法の工程を以下に示す。
<混練工程>
この工程は、ニトリルゴム(日本合成ゴム製品N220Sニトリル含量:41%)90重量%に対し、ニトリルゴムと反応し得る液状NBR(日本ゼオン製品Nipol1312ニトリル含量:28%、B型粘度(70℃):6000cps)10重量%よりなるゴム混合物100重量部に対し、800重量部の磁性粉Srフェライト(戸田工業製品FM−201)と、実施例1に示す加硫剤その他の薬品とを、密閉式混練機により均一に混練する。
Moreover, the process of the manufacturing method of the magnetic therapy apparatus which concerns on this invention is shown below.
<Kneading process>
In this process, 90% by weight of nitrile rubber (Nippon synthetic rubber product N220S nitrile content: 41%), liquid NBR that can react with nitrile rubber (Nippon Zeon product Nipol 1312 nitrile content: 28%, B-type viscosity (70 ° C.)) : 6000 cps) For 100 parts by weight of a rubber mixture comprising 10% by weight, 800 parts by weight of magnetic powder Sr ferrite (Toda Kogyo product FM-201) and the vulcanizing agent and other chemicals shown in Example 1 are sealed. Knead uniformly with a kneader.

<押出し工程>
上記混練工程で混練された混合物を、直径50mmの押出し機により、直径3mmの円形ダイスを用いて紐状に押出した。
この時の押出し成形機のスクリュー回転速度は100rpm、材料温度は60℃、口金温度は80℃、引張り速度は30cm/secである。
得られた紐状成形体を160℃の0.5MPaのスチームで、1時間加硫を行った。
<Extrusion process>
The mixture kneaded in the kneading step was extruded into a string shape using a circular die having a diameter of 3 mm by an extruder having a diameter of 50 mm.
At this time, the screw speed of the extruder is 100 rpm, the material temperature is 60 ° C., the die temperature is 80 ° C., and the pulling speed is 30 cm / sec.
The obtained string-like molded body was vulcanized with steam of 0.5 MPa at 160 ° C. for 1 hour.

<着磁工程>
加硫が終わった紐状成形体を適当な寸法に切断し、上下方向から高磁気を放射することにより着磁を行った。
<Magnetization process>
The string-like molded body after vulcanization was cut to an appropriate size and magnetized by radiating high magnetism from the vertical direction.

<被覆工程>
適当の長さに裁断された紐状成形体の表面を、ニット製の生地で被覆する。
最後に、紐状成形体の両端に、市販の雄雌型接続具を取付ける。
この様にして得られた磁気治療器具は、58mTの表面磁束密度を有し、引張り強度は1.2MPaであった。
<Coating process>
The surface of the string-like molded body cut to an appropriate length is covered with a knit fabric.
Finally, a commercially available male-female connector is attached to both ends of the string-like molded body.
The magnetic therapy device thus obtained had a surface magnetic flux density of 58 mT and a tensile strength of 1.2 MPa.

次に、本発明の磁気治療器具を、実施例により説明するが、本発明はこれらの例によってなんら限定されるものではない。   Next, the magnetic therapy device of the present invention will be described with reference to examples, but the present invention is not limited to these examples.

実施例1〜3、比較例1〜2
実 施 例 比 較 例

固形NBR(日本合成ゴム製品 90 80 70 100 100
N220S
ニトリル含量:41%)
液状NBR(日本ゼオン製品 10 20 30 0 0
Nipol1312
ニトリル含量:28%、
B型粘度(70℃):6000cps)
Srフェライト 800 800 800 450 800
(戸田工業製品FM−201)
活性亜鉛華 3 3 3 3 3
4,4′-ビス(α,α-ジメチルベンジル) 2 2 2 2 2
ジフェニルアミン老化防止剤
(大内新興化学製品ノクラックCD)
加工助剤(ステアリン酸) 2 2 2 2 2
ポリエーテル系可塑剤 5 5 5 5 5
(旭電化製品RS700)
イオウ 0.8 0.8 0.8 0.8 0.8
テトラメチルチウラムジスルフィド 2 2 2 2 2
架橋助剤
(大内新興化学製品ノクセラーTT)
N-シクロヘキシル-2- 1 1 1 1 1
ベンゾチアジルスルフェンアミド
架橋助剤
(大内新興化学製品ノクセラーCZ)

上記実施例1以外の配合についても、前記実施例1の製造方法の工程と同様に処置し、磁気治療具を得た。
Examples 1-3, Comparative Examples 1-2
Example comparison example
1 2 3 1 2
Solid NBR (Japanese synthetic rubber product 90 80 70 100 100
N220S
(Nitrile content: 41%)
Liquid NBR (Nippon Zeon products 10 20 30 0 0
Nipol1312
Nitrile content: 28%,
B type viscosity (70 ° C.): 6000 cps)
Sr ferrite 800 800 800 450 800
(Toda Industrial Products FM-201)
Active zinc white 3 3 3 3 3
4,4'-bis (α, α-dimethylbenzyl) 2 2 2 2 2
Diphenylamine anti-aging agent (Ouchi Emerging Chemical Product NOCRACK CD)
Processing aid (stearic acid) 2 2 2 2 2
Polyether plasticizer 5 5 5 5 5
(Asahi Electronics RS700)
Sulfur 0.8 0.8 0.8 0.8 0.8 0.8
Tetramethylthiuram disulfide 2 2 2 2 2
Cross-linking aid (Ouchi Emerging Chemicals Noxeller TT)
N-cyclohexyl-2- 1 1 1 1 1
Benzothiazylsulfenamide Cross-linking aid (Ouchi Emerging Chemicals Noxeller CZ)

The formulations other than Example 1 were also treated in the same manner as in the production method of Example 1 to obtain a magnetic therapy device.

上記実施例及び比較例の押出し成形後の紐状成形体について、以下の各項目の試験を行った。
引張り強さ:JISK6251に準拠。
ムーニー粘度Vm:JISK6200の用語の定義による。
表面磁束密度:ADSガウスメーター(MODEL HGM4001)を用いて、紐状成形体の任意の点を、n=3にて測定し、その平均値をとった。
About the string-like molded object after the extrusion molding of the said Example and comparative example, the test of the following each item was done.
Tensile strength: Conforms to JISK6251.
Mooney viscosity Vm: According to the definition of JISK6200 terminology.
Surface magnetic flux density: Using an ADS gauss meter (MODEL HGM4001), an arbitrary point of the string-like molded body was measured at n = 3, and an average value thereof was taken.

以上の各実施例および各比較例の配合で得られた紐状成形体の測定結果は、混練物のムーニー粘度(125℃)と共に、次の表に示される。

実 施 例 比 較 例
測 定 項 目
引張強さ(MPa) 1.2 0.85 0.55 2.2 0.4
ムーニー粘度(Vm) 58 34 18 60 100>
表面磁束密度(mT) 58 51 53 32 47
The measurement results of the string-like molded bodies obtained by blending the above Examples and Comparative Examples are shown in the following table together with the Mooney viscosity (125 ° C.) of the kneaded product.
table
Example comparison example Measurement item 1 2 3 1 2
Tensile strength (MPa) 1.2 0.85 0.55 2.2 0.4
Mooney viscosity (Vm) 58 34 18 60 100>
Surface magnetic flux density (mT) 58 51 53 32 47

Claims (10)

ネックレス等に用いられるゴム状弾性材と磁性粉との混合物により形成される紐状の磁気治療器具において、前記混合物が、固形ゴム70〜95重量%および固形ゴムと反応し得る液状ゴム30〜5重量%よりなるゴム混合物100重量部に対し、450〜1000重量部の磁性粉を添加したものであることを特徴とする磁気治療器具。   In a string-like magnetic therapy device formed of a mixture of a rubber-like elastic material and magnetic powder used for a necklace or the like, the mixture contains 70 to 95% by weight of solid rubber and 30 to 5 liquid rubber that can react with the solid rubber. A magnetic therapeutic instrument comprising 450 to 1000 parts by weight of magnetic powder added to 100 parts by weight of a rubber mixture consisting of wt%. 固形ゴムと反応し得る液状ゴムが固形ゴムと同一の加硫剤で共架橋できる液状ゴムであることを特徴とする請求項1記載の磁気治療器具。   2. The magnetic therapy device according to claim 1, wherein the liquid rubber capable of reacting with the solid rubber is a liquid rubber that can be co-crosslinked with the same vulcanizing agent as the solid rubber. 固形ゴムが固形NBRであり、液状ゴムが液状NBRである請求項1または2記載の磁気治療器具。   3. The magnetic therapy device according to claim 1, wherein the solid rubber is solid NBR and the liquid rubber is liquid NBR. ニトリル含量が35〜45%の固形NBRが用いられた請求項3記載の磁気治療器具。   The magnetic therapy device according to claim 3, wherein solid NBR having a nitrile content of 35 to 45% is used. B型粘度(70℃)が4000〜20000cpsの液状ゴムが用いられた請求項1記載の磁気治療器具。   The magnetic therapy device according to claim 1, wherein a liquid rubber having a B-type viscosity (70 ° C) of 4000 to 20000 cps is used. B型粘度(70℃)が4000〜8000cpsでかつニトリル含量が26〜32%の液状NBRが用いられた請求項3記載の磁気治療器具。   The magnetic therapy device according to claim 3, wherein liquid NBR having a B-type viscosity (70 ° C) of 4000 to 8000 cps and a nitrile content of 26 to 32% is used. 磁性粉がフェライト磁石および希土類磁石の内の一種以上からなる請求項1記載の磁気治療器具。   2. The magnetic therapy apparatus according to claim 1, wherein the magnetic powder comprises at least one of a ferrite magnet and a rare earth magnet. フェライト磁石がストロンチウムフェライトまたはバリウムフェライトである請求項7記載の磁気治療器具。   The magnetic therapy device according to claim 7, wherein the ferrite magnet is strontium ferrite or barium ferrite. 前記紐状の磁気治療器具の表面が、ニット製の生地で被覆されていることを特徴とする請求項1〜8いずれか一項に記載の磁気治療器具。   The magnetic therapeutic device according to any one of claims 1 to 8, wherein a surface of the string-shaped magnetic therapeutic device is covered with a knit fabric. 請求項1〜9の何れか記載の磁気治療器具を製造する方法であって、
固形ゴム70〜95重量%および固形ゴムと反応し得る液状ゴム30〜5重量%よりなるゴム混合物100重量部に対し、450〜1000重量部の磁性粉と、加硫剤とを均一に混練する混練工程と、
混練された混合物を紐状に押出す押出し工程と、
押出された紐状成形体に熱を加えることにより、紐状成形体を加硫する加硫工程と、
加硫した紐状成形体を着磁する着磁工程とを含むことを特徴とする磁気治療器具の製造方法。
A method for producing the magnetic therapy device according to claim 1,
450 to 1000 parts by weight of magnetic powder and a vulcanizing agent are uniformly kneaded with respect to 100 parts by weight of a rubber mixture comprising 70 to 95% by weight of solid rubber and 30 to 5% by weight of liquid rubber capable of reacting with the solid rubber. A kneading step;
An extrusion process of extruding the kneaded mixture into a string shape;
A vulcanization step of vulcanizing the string-shaped molded body by applying heat to the extruded string-shaped molded body;
And a magnetizing step of magnetizing the vulcanized string-like molded body.
JP2009099840A 2009-04-16 2009-04-16 Magnetic therapy device and method for manufacturing the same Withdrawn JP2010246755A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013255711A (en) * 2012-06-13 2013-12-26 Pip Co Ltd Magnetic therapy device
CN111333927A (en) * 2013-02-21 2020-06-26 Nok株式会社 Method for manufacturing sensor for magnetic encoder and magnetic encoder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013255711A (en) * 2012-06-13 2013-12-26 Pip Co Ltd Magnetic therapy device
CN111333927A (en) * 2013-02-21 2020-06-26 Nok株式会社 Method for manufacturing sensor for magnetic encoder and magnetic encoder

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