JP6309265B2 - Electrical rubber gloves and method for manufacturing the same - Google Patents
Electrical rubber gloves and method for manufacturing the same Download PDFInfo
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Description
本発明は、電気絶縁用手袋として好適な電気用ゴム手袋およびその製造方法に関し、特には、高圧用に適し、外側表面部分と内側部分とで色の異なる断面二色からなる電気用ゴム手袋およびその製造方法に関する。 The present invention relates to an electrical rubber glove suitable as an electrical insulation glove and a method for producing the same, and more particularly, an electrical rubber glove suitable for high pressure and having two cross-sections having different colors on an outer surface portion and an inner portion, and It relates to the manufacturing method.
電気工事の際に手から感電するのを防止するため、電気絶縁用手袋として電気用ゴム手袋が使用されている。 In order to prevent electric shock from hands during electrical work, electrical rubber gloves are used as electrical insulation gloves.
電気用ゴム手袋は、ゴムラテックスから形成されたものであり、使用中の摩耗などにより厚みが薄くなることがある。また、電気用ゴム手袋は、ゴムの厚みが薄くなると電気絶縁性が低下するようになる。
しかしながら、使用によるゴムの厚み減少は徐々に進行するため、作業者が気付きにくく、安全性を損なうまで電気絶縁性が低下しても気付かないおそれがある。特に、交流電圧が６００Ｖ、または直流電圧が７５０Ｖを超え７，０００Ｖ以下の電路に用いられる高圧用のゴム手袋においては、ゴムの厚み減少による電気絶縁性低下は重要な問題で有り、ゴムの厚みについて細心の注意を払う必要がある。
Electrical rubber gloves are formed from rubber latex and may be thin due to wear during use. Also, the electrical rubber gloves have a lower electrical insulation property when the rubber thickness is reduced.
However, since the rubber thickness decrease due to use gradually progresses, it is difficult for the operator to notice, and even if the electrical insulating property is lowered until safety is impaired, there is a possibility that the operator will not notice. In particular, in a high-pressure rubber glove used in an electric circuit with an AC voltage of 600 V or a DC voltage of more than 750 V and 7,000 V or less, a decrease in the electrical insulation due to a decrease in the rubber thickness is an important problem. Need to pay close attention to.
電気用ゴム手袋の製造方法の一つとして感熱法がある。感熱法では、ゴムラテックスに加硫剤と感熱凝固剤を添加した凝固用ゴムラテックス中に、予熱した手袋の型を浸漬して前記手袋の型の表面に付着した前記凝固用ゴムラテックスを凝固させて手袋形状のゴム被膜を形成し、前記手袋の型から前記ゴム被膜を外し、手袋の形状をした加硫乾燥用型に装着して加硫及び乾燥することにより電気用ゴム手袋を製造する。 One method for producing electrical rubber gloves is a heat sensitive method. In the thermal method, a preheated glove mold is immersed in a rubber latex for coagulation in which a vulcanizing agent and a heat-sensitive coagulant are added to the rubber latex to coagulate the coagulation rubber latex adhering to the surface of the glove mold. A rubber-like glove-shaped film is formed, the rubber film is removed from the glove mold, and attached to a glove-shaped vulcanization drying mold to vulcanize and dry to produce an electric rubber glove.
本発明は前記の点に鑑みなされたものであって、ゴムの厚みが薄くなった（厚みが減少した）ことを使用者が視覚によって容易に認識でき、しかも品質が良好で高圧用に適した電気用ゴム手袋およびその製造方法の提供を目的とする。 The present invention has been made in view of the above points, and the user can easily visually recognize that the thickness of the rubber has been reduced (the thickness has been reduced), and has good quality and is suitable for high pressure use. An object is to provide an electric rubber glove and a method for manufacturing the same.
請求項１の発明は、ゴムラテックスに加硫剤と感熱凝固剤を添加した凝固用ゴムラテックスから形成された電気用ゴム手袋において、前記凝固用ゴムラテックスに水性有機系顔料を含有し、前記ゴム手袋は前記凝固用ゴムラテックスから形成された単層のゴムからなり、前記単層のゴムは、前記凝固用ゴムラテックスに含有した前記水性有機系顔料で着色された着色部分を前記ゴム手袋の外側表面に有し、前記外側表面の着色部分と該着色部分に隣接する内側部分に含有される前記水性有機系顔料が、前記内側部分よりも前記外側表面の着色部分に密に集まって前記外側表面の着色部分が着色されていることにより、前記外側表面の着色部分に隣接する内側部分と前記外側表面の着色部分とでゴムの色が異なる二色からなることを特徴とする。
The invention according to
請求項２の発明は、ゴムラテックスに加硫剤と感熱凝固剤と水性有機系顔料を添加した凝固用ゴムラテックス中に、予熱した手袋の型を浸漬して前記手袋の型の表面に付着した前記凝固用ゴムラテックスを凝固させて手袋形状の単層のゴム被膜を形成し、前記手袋の型から前記手袋形状の単層のゴム被膜を外し、手袋の形状をした加硫乾燥用型に装着して加硫及び乾燥することにより、前記凝固用ゴムラテックスから形成された手袋形状の単層のゴムからなり、外側表面には前記水性有機系顔料で着色された着色部分を有し、前記外側表面の着色部分に隣接する内側部分と前記外側表面の着色部分とでゴムの色が異なる二色の電気用ゴム手袋を製造することを特徴とする。
In the invention of
請求項３の発明は、請求項２において、前記加硫及び乾燥は、前記手袋形状の単層のゴム被膜の内面を前記加硫乾燥用型の表面に密着させて行うことを特徴とする。
請求項４の発明は、請求項２または３において、前記加硫及び乾燥は、５０〜１６０℃で６０分〜１６５時間行うことを特徴とする。
According to a third aspect of the present invention, in the second aspect , the vulcanization and drying are performed by bringing an inner surface of the glove-shaped single layer rubber coating into close contact with a surface of the vulcanization drying mold.
The invention of claim 4 is characterized in that, in
本発明の電気用ゴム手袋によれば、外側表面の着色部分と内側部分とでゴムの色が異なるため、使用により外側表面の着色部分が摩耗して内側部分が露出すると、露出した内側部分の色でゴムの厚み減少を視覚的に認識することができ、新しい電気用ゴム手袋に交換する時期を把握することができる。また、本発明の電気用ゴム手袋は、着色部分のゴムと内側部分のゴムを積層した二層構造のものとは異なり、単層のゴムからなるため、着色部分と内側部分間に不純物が混入して絶縁性が低下したり、着色部分と内側部分の結合強度が不足して剥離し易くなったり、強度が低下したりするおそれがない。 According to the electrical rubber glove of the present invention, since the color of the rubber is different between the colored portion on the outer surface and the inner portion, if the colored portion on the outer surface is worn and the inner portion is exposed by use, the exposed inner portion It is possible to visually recognize the decrease in rubber thickness by color, and to know when to replace with a new electric rubber glove. In addition, the electric rubber glove of the present invention is different from the two-layer structure in which the colored portion rubber and the inner portion rubber are laminated, and is made of a single layer rubber. Therefore, impurities are mixed between the colored portion and the inner portion. As a result, there is no fear that the insulating property is lowered, the bonding strength between the colored portion and the inner portion is insufficient, and the peeling becomes easy and the strength is not lowered.
本発明の電気用ゴム手袋の製造方法によれば、凝固用ゴムラテックス中に、予熱した手袋の型を浸漬して前記手袋の型の表面に付着した前記凝固用ゴムラテックスを凝固させて手袋形状の単層のゴム被膜を形成し、前記手袋の型から前記手袋形状の単層のゴム被膜を外し、手袋の形状をした加硫乾燥用型に装着して加硫及び乾燥によって、ゴム被膜の表面から水分が蒸発する際に、ゴム被膜内の水性有機系顔料が、水分と共にゴム被膜の表面に移動して内側部分よりも外側表面に密に集まる。それによって、水性有機系顔料で着色された着色部分が外側表面に形成され、外側表面の着色部分と内側部分とでゴムの色が異なる二色の電気用ゴム手袋が得られる。 According to the method for manufacturing an electrical rubber glove of the present invention, a glove shape is formed by immersing a preheated glove mold in a coagulation rubber latex to coagulate the coagulation rubber latex adhering to the surface of the glove mold. The glove-shaped single-layer rubber coating is removed from the glove mold, attached to a glove-shaped vulcanization drying mold, vulcanized and dried, When the water evaporates from the surface, the aqueous organic pigment in the rubber film moves to the surface of the rubber film together with the water and gathers more closely on the outer surface than the inner part. As a result, a colored portion colored with an aqueous organic pigment is formed on the outer surface, and two-color electric rubber gloves having different rubber colors between the colored portion on the outer surface and the inner portion are obtained.
このように、本発明の電気用ゴム手袋の製造方法によれば、着色部分の形成の際と内側部分の形成の際にその都度の合計２回も凝固用ゴムラテックスに手袋の型を浸漬する必要がなく、凝固用ゴムラテックスに手袋の型を１回浸漬するだけでよいため、二色のゴムからなる電気用ゴム手袋を簡略な作業で製造することができる。さらに、凝固用ゴムラテックスへの手袋の型の浸漬が１回だけでよいため、外側表面の着色部分と内側部分間に不純物が混入してゴム手袋の絶縁性が低下したり、ゴム手袋の着色部分と内側部分で結合強度が不足して剥離し易くなったり、強度が低下したりするおそれがない。 As described above, according to the method for manufacturing an electric rubber glove of the present invention, the mold of the glove is immersed in the coagulation rubber latex twice in total at the time of forming the colored portion and the inner portion. There is no need, and it is only necessary to immerse the mold of the glove once in the rubber latex for coagulation. Therefore, an electric rubber glove made of two-color rubber can be manufactured by a simple operation. Further, since the glove mold is immersed only once in the rubber latex for coagulation, impurities are mixed between the colored portion on the outer surface and the inner portion to reduce the insulating property of the rubber glove, or the rubber glove is colored. There is no fear that the bonding strength is insufficient between the portion and the inner portion, and it is easy to peel off or the strength is not lowered.
図１および図２に示す実施形態の電気用ゴム手袋１０は、高圧用であり、指の先から手首の上まで挿入可能に形成されている。なお、図１および２には一方の手用を示しているが、他方の手用も同様の構成である。
The
前記電気用ゴム手袋１０は、凝固用ゴムラテックスから形成された単層のゴム１１で形成されている。前記単層のゴム１１は、手袋の外側表面の着色部分１１ａと、該着色部分１１ａに隣接する内側部分１１ｂが互いに色の異なる二色の断面構造になっている。例えば、前記着色部分１１ａが赤色、前記内側部分１１ｂが白色である。
The
前記着色部分１１ａは、凝固用ゴムラテックスに添加された水性有機系顔料が前記内側部分１１ｂよりも表面に密に集まって着色された部分であり、使用する水性有機系顔料に応じた色に着色されている。前記表面の着色部分１１ａの厚みは、全体（着色部分＋内側部分）の厚みの３〜１５％程度が好ましい。なお、例として全体厚みが１．２〜３ｍｍ、前記着色部分１１ａの厚みが０．０４〜０．１６ｍｍを挙げる。 The colored portion 11a is a portion in which the aqueous organic pigment added to the coagulating rubber latex is more densely collected on the surface than the inner portion 11b, and is colored in a color corresponding to the aqueous organic pigment used. Has been. The thickness of the colored portion 11a on the surface is preferably about 3 to 15% of the total thickness (colored portion + inner portion). As an example, the overall thickness is 1.2 to 3 mm, and the thickness of the colored portion 11a is 0.04 to 0.16 mm.
凝固用ゴムラテックスは、ゴムラテックスに加硫剤、感熱凝固剤、水性有機系顔料、その他適宜の添加剤を添加したもので構成される。
前記ゴムラテックスとしては、感熱法に使用されている公知のものを１種または複数混合して用いることができる。例えば、天然ゴム（ＮＲ）ラテックス、アクリロニトリル−ブタジエンゴム（ＮＢＲ）ラテックス、スチレン−ブタジエンゴム（ＳＢＲ）ラテックス、メタクリル酸エチルグラフト（ＭＧ）ラテックス等を挙げる。なお、前記ゴムラテックスは、適宜ホルマリンの添加によりｐＨの調整が行われて使用される。
The rubber latex for coagulation is constituted by adding a vulcanizing agent, a heat-sensitive coagulant, an aqueous organic pigment, and other appropriate additives to the rubber latex.
As said rubber latex, the well-known thing currently used for the heat sensitive method can be used 1 type or in mixture. Examples thereof include natural rubber (NR) latex, acrylonitrile-butadiene rubber (NBR) latex, styrene-butadiene rubber (SBR) latex, and ethyl methacrylate graft (MG) latex. The rubber latex is appropriately adjusted for pH by adding formalin.
加硫剤としては、ゴムの加硫に使用されている公知のものを用いることができる。例えば、硫黄、酸化亜鉛、酸化マグネシウム、ジチオカルバミン酸塩、チラニウムポリサルファイド等を挙げる。加硫剤の添加量は、ゴムラテックスの固形分１００重量部に対して１〜２０重量部が好ましい。 As the vulcanizing agent, known ones used for rubber vulcanization can be used. Examples thereof include sulfur, zinc oxide, magnesium oxide, dithiocarbamate, and tyronium polysulfide. The addition amount of the vulcanizing agent is preferably 1 to 20 parts by weight with respect to 100 parts by weight of the solid content of the rubber latex.
感熱凝固剤は、感熱化剤とも称されるものであり、感熱法に使用されている公知のものを用いることができる。例えば、ポリビニルメチルエーテル、ポリアルキレングリコール、感応性ポリシロキサンなどを挙げる。感熱凝固剤の添加量は、ゴムラテックスの固形分１００重量部に対して１〜３０重量部が好ましい。 The heat-sensitive coagulant is also referred to as a heat-sensitive agent, and known ones used in the heat-sensitive method can be used. Examples include polyvinyl methyl ether, polyalkylene glycol, and sensitive polysiloxane. The addition amount of the heat-sensitive coagulant is preferably 1 to 30 parts by weight with respect to 100 parts by weight of the solid content of the rubber latex.
水性有機系顔料としては、水とラテックスに対する相性がよく、ラテックス溶液中に分散または希釈し易く、沈降等を生じないものが好ましい。例えば、有機アゾ系、フタロシアニン顔料系、捺染系を挙げることができる。なお、ベンガラなどの無機系顔料は、本発明においてゴムが二色にならず、好ましくないものである。水性有機系顔料の添加量は、ゴムラテックスの固形分１００重量部に対して０．１〜２０重量部が好ましい。 As the aqueous organic pigment, those that have good compatibility with water and latex, are easily dispersed or diluted in the latex solution, and do not cause precipitation or the like are preferable. For example, organic azo type, phthalocyanine pigment type and textile printing type can be mentioned. Inorganic pigments such as Bengala are not preferable because the rubber does not become two-colored in the present invention. The amount of the aqueous organic pigment added is preferably 0.1 to 20 parts by weight with respect to 100 parts by weight of the solid content of the rubber latex.
その他の添加剤として加硫促進剤を添加してもよい。加硫促進剤としては、公知のものを用いることができ、例えば、ジメチルジチオカルバミン酸亜鉛（ＰＺ）、ジエチルジチオカルバミン酸亜鉛（ＥＺ）、ジブチルジチオカルバミン酸亜鉛（ＢＺ）、２−メルカプトベンゾチアゾールの亜鉛塩（ＭＺ）、テトラメチルチラウムジスルフィド（ＴＴ）、テトラエチルチラウムジスルフィド（ＴＥＴ）等を挙げる。加硫促進剤の添加量は、ゴムラテックスの固形分１００重量部に対して０．５〜３０重量部が好ましい。
さらに他の添加剤として、充填剤として酸化チタン等を添加したり、加硫促進助剤等を添加したりしてもよい。
A vulcanization accelerator may be added as another additive. Known vulcanization accelerators can be used, such as zinc dimethyldithiocarbamate (PZ), zinc diethyldithiocarbamate (EZ), zinc dibutyldithiocarbamate (BZ), zinc salt of 2-mercaptobenzothiazole. (MZ), tetramethyltylium disulfide (TT), tetraethyltylium disulfide (TET) and the like. The addition amount of the vulcanization accelerator is preferably 0.5 to 30 parts by weight with respect to 100 parts by weight of the solid content of the rubber latex.
Further, as other additives, titanium oxide or the like may be added as a filler, or a vulcanization acceleration aid or the like may be added.
次に前記電気用ゴム手袋１０の製造方法について説明する。前記電気用ゴム手袋１０の製造方法は、浸漬凝固工程、加硫乾燥工程とからなる。
浸漬凝固工程では、前記ゴムラテックスに加硫剤、感熱凝固剤、水性有機系顔料、その他適宜の添加剤を添加した前記凝固用ゴムラテックス中に、予熱した手袋の型を浸漬して前記手袋の型の表面に付着した前記凝固用ゴムラテックスを凝固させて手袋形状の単層のゴム被膜を形成する。
Next, a method for manufacturing the
In the immersion coagulation step, a preheated glove mold is immersed in the rubber latex for coagulation in which a vulcanizing agent, a heat-sensitive coagulant, an aqueous organic pigment, and other appropriate additives are added to the rubber latex. The rubber latex for coagulation adhering to the surface of the mold is coagulated to form a glove-shaped single layer rubber coating.
前記手袋の型の温度は４０〜１００℃が好ましく、また、浸漬時間は２〜２０秒が好ましい。前記手袋の型の温度及び浸漬時間は、低圧用（低電圧用）のゴム手袋に比べて大きくなっている。前記浸漬は、前記手袋の型の温度および浸漬時間で１回のみ行われる。なお、前記手袋の型は、アルミニウム等の金属製のものが加熱のし易さなどから好ましい。また、前記手袋の型の加熱は、ヒーター、温水等によって行うことができる。 The temperature of the glove mold is preferably 40 to 100 ° C., and the immersion time is preferably 2 to 20 seconds. The temperature and immersion time of the glove mold are larger than those of rubber gloves for low pressure (for low voltage). The immersion is performed only once at the temperature of the glove mold and the immersion time. The glove mold is preferably made of metal such as aluminum from the viewpoint of easiness of heating. The glove mold can be heated with a heater, hot water, or the like.
加硫乾燥工程では、前記手袋の型から前記手袋形状の単層のゴム被膜を外し、手袋の形状をした加硫乾燥用型に装着して加硫及び乾燥する。
前記加硫乾燥用型は、前記手袋形状の単層のゴム被膜を装着した際に単層のゴム被膜の内面が型の表面に密着するサイズからなり、前記浸漬凝固工程で用いた手袋の型とほぼ等しい表面形状からなる。前記加硫乾燥用型の材質は、陶器、軽金属等を挙げることができ、特に熱膨張のために陶器が好ましい。
In the vulcanization drying step, the glove-shaped single layer rubber coating is removed from the glove mold, and the glove-shaped vulcanization drying mold is attached to vulcanize and dry.
The vulcanization drying mold has a size that allows the inner surface of the single-layer rubber coating to be in close contact with the surface of the mold when the glove-shaped single-layer rubber coating is attached, and the glove mold used in the immersion solidification step. The surface shape is almost the same. Examples of the material for the vulcanization drying mold include pottery and light metals, and pottery is particularly preferable for thermal expansion.
前記加硫および乾燥は、前記加硫乾燥用型に前記手袋形状の単層のゴム被膜を装着した状態で５０〜１６０℃、６０分〜１６５時間加熱することにより行う。加熱は、前記単層のゴム被膜を装着した加硫乾燥用型を加熱炉に収容したりして行う。この加熱により、前記ゴム被膜中の水分がゴム被膜の表面から蒸発する際に、ゴム被膜内の水性有機系顔料が水分と共にゴム被膜の表面に移動し、内側部分よりも外側の表面側に水性有機系顔料が密に集まる。それによって、水性有機系顔料で着色された着色部分が、前記加硫乾燥用型とは反対側のゴム被膜の外側表面に形成され、一方、前記ゴム被膜の着色部分に隣接する内側部分は、水性有機系顔料が少なくなって、前記外側表面の着色部分と内側部分とで色が異なる二色のゴムが形成される。 The vulcanization and drying are performed by heating at 50 to 160 ° C. for 60 minutes to 165 hours in a state where the glove-shaped single layer rubber film is attached to the vulcanization drying mold. Heating is carried out by placing the vulcanization drying mold equipped with the single-layer rubber coating in a heating furnace. When the water in the rubber film evaporates from the surface of the rubber film by this heating, the aqueous organic pigment in the rubber film moves to the surface of the rubber film together with the water, and the aqueous film on the outer surface side of the inner portion is water-based. Organic pigments gather densely. Thereby, a colored portion colored with an aqueous organic pigment is formed on the outer surface of the rubber coating opposite to the vulcanization drying mold, while an inner portion adjacent to the colored portion of the rubber coating is The amount of water-based organic pigment is reduced, and two-color rubbers having different colors are formed between the colored portion and the inner portion of the outer surface.
さらに、前記加硫乾燥工程において、単層のゴム被膜の内面が加硫乾燥用型の表面に密着した状態でゴム被膜が加熱されることにより、ゴム被膜内の水分は、加硫乾燥用型の表面と密着していない外側の表面側で蒸発することになるため、ゴム被膜の外側表面側にのみ水性有機系顔料が集まり、前記水性有機系顔料で着色された着色部分を外側表面に効率よく形成することができる。また、前記加硫および乾燥の温度は、水性有機系顔料がゴム被膜の表面側へ効率よく移動できるように、通常のゴムの加硫温度よりも低温であり、かつ長い加熱時間となっている。加熱時間終了後、前記加硫乾燥用型からゴム被膜を外すことにより、断面が二色の前記電気用ゴム手袋１０を得る。
Further, in the vulcanization drying step, the rubber coating is heated in a state where the inner surface of the single layer rubber coating is in close contact with the surface of the vulcanization drying mold, so that the moisture in the rubber coating is removed from the vulcanization drying mold. The water-based organic pigment is collected only on the outer surface side of the rubber coating, and the colored portion colored with the water-based organic pigment is efficiently applied to the outer surface. Can be well formed. The vulcanization and drying temperature is lower than the normal rubber vulcanization temperature and has a long heating time so that the aqueous organic pigment can efficiently move to the surface side of the rubber coating. . After the heating time is over, the rubber film is removed from the vulcanization drying mold to obtain the
＜実施例１＞
天然ゴムラテックスを混合撹拌し、ホルマリンを加えて中性〜弱アルカリ性に調整した後、５０℃に加温して５時間保持することにより、原料ゴムラテックス（固形分濃度５０重量％）を作成した。
<Example 1>
After mixing and stirring natural rubber latex, adding formalin to adjust to neutral to weak alkalinity, the mixture was heated to 50 ° C. and held for 5 hours to prepare a raw rubber latex (solid content concentration 50% by weight). .
前記原料ラテックス（固形分濃度５０重量％）１００重量部に対して、加硫剤５重量部、感熱凝固剤１０重量部、水性有機系顔料１重量部、加硫促進剤１重量部を添加し、撹拌して凝固用ゴムラテックスを作成した。以下に、使用した加硫剤、感熱凝固剤、水性有機系顔料、加硫促進剤を示す。
加硫剤：亜鉛華（酸化亜鉛）
感熱凝固剤：ポリビニルメチルエーテル
水性有機系顔料：溶性アゾ系顔料（レッド）
加硫促進剤：ジブチルカルバミン酸亜鉛（ＢＺ）
5 parts by weight of vulcanizing agent, 10 parts by weight of thermal coagulant, 1 part by weight of aqueous organic pigment and 1 part by weight of vulcanization accelerator are added to 100 parts by weight of the raw material latex (solid content concentration: 50% by weight). The rubber latex for coagulation was prepared by stirring. The vulcanizing agent, heat-sensitive coagulant, aqueous organic pigment, and vulcanization accelerator used are shown below.
Vulcanizing agent: zinc white (zinc oxide)
Thermosensitive coagulant: Polyvinyl methyl ether Aqueous organic pigment: Soluble azo pigment (red)
Vulcanization accelerator: zinc dibutylcarbamate (BZ)
アルミニウム製の手袋の型をオーブンで６５℃に予熱し、前記凝固用ゴムラテックス中に１０秒間浸漬し、手袋の型の表面で凝固用ゴムラテックスを凝固させて手袋形状の単層のゴム被膜を形成した。手袋の型は、指の先から手首の上までの部分を有する。
次に前記手袋形状の単層のゴム被膜を手袋の型から外し（剥がし）、前記手袋形状の単層のゴム被膜を手袋の形状をした陶器製の加硫乾燥用型に装着した。前記陶器製の加硫乾燥用型は、前記手袋の型とほぼ等しい形状からなり、前記単層のゴム被膜の内面が前記陶器製の加硫乾燥用型の表面に密着する。前記手袋形状の単層のゴム被膜を装着した陶器製の加硫乾燥用型を、蒸気釜に収容して１６０℃で７０分間加熱し、加硫および乾燥を行った。その後、陶器製の加硫乾燥用型からゴム被膜を外し、実施例１の電気用ゴム手袋を得た。
An aluminum glove mold is preheated to 65 ° C. in an oven, immersed in the coagulation rubber latex for 10 seconds, and the coagulation rubber latex is coagulated on the surface of the glove mold to form a glove-shaped single layer rubber coating. Formed. The glove mold has a portion from the tip of the finger to the top of the wrist.
Next, the glove-shaped single-layer rubber coating was removed (peeled) from the glove mold, and the glove-shaped single-layer rubber coating was mounted on a glove-shaped ceramic vulcanization drying mold. The porcelain vulcanization drying mold has substantially the same shape as the glove mold, and the inner surface of the single-layer rubber coating is in close contact with the surface of the porcelain vulcanization drying mold. A porcelain vulcanization drying mold fitted with the glove-shaped single-layer rubber coating was placed in a steam kettle and heated at 160 ° C. for 70 minutes for vulcanization and drying. Thereafter, the rubber coating was removed from the porcelain vulcanization drying mold, and the electric rubber glove of Example 1 was obtained.
実施例１の電気用ゴム手袋を、ＪＩＳ Ｔ ８１１２「電気用ゴム手袋」Ｂ種（使用電圧３，５００Ｖ、試験電圧１２，０００Ｖ）にしたがって、高圧用電気絶縁試験を行った結果、１０ｍＡ以下であった。
また、実施例１の電気用ゴム手袋は、カットしたところ、外側表面に赤色の着色部分を有し、着色部分に隣接する内側部分が白に近い淡色からなり、断面が二色に分かれたゴムの一層からなっていた。
さらに実施例１の電気用ゴム手袋を、指、甲、手首、手首の上方箇所における合計９カ所の部位でカットし、各部位でゴムの全体厚み（ｍｍ）、赤い表面の着色部分の厚み（ｍｍ）をそれぞれ測定し、さらに各部位で全体の厚みに対する表面の着色部分の厚みの割合（％）を計算し、平均値を求めた。平均値は、ゴムの全体厚みが１．３０４ｍｍ、表面の着色部分の厚みが０．１１１ｍｍ、表面の着色部分の割合が９％であった。
The electrical rubber glove of Example 1 was subjected to a high voltage electrical insulation test in accordance with JIS T 8112 “Electric rubber gloves” class B (operating voltage 3,500 V, test voltage 12,000 V). there were.
Further, when the electric rubber glove of Example 1 is cut, the rubber having a red colored portion on the outer surface, the inner portion adjacent to the colored portion is a light color close to white, and the cross section is divided into two colors It was made up of more.
Further, the electrical rubber glove of Example 1 was cut at a total of nine sites in the upper part of the finger, upper, wrist and wrist, and the total thickness of rubber (mm) and the thickness of the colored portion on the red surface ( mm), and the ratio (%) of the thickness of the colored portion of the surface with respect to the total thickness at each part was calculated to obtain an average value. As for the average value, the total thickness of the rubber was 1.304 mm, the thickness of the colored portion on the surface was 0.111 mm, and the ratio of the colored portion on the surface was 9%.
＜比較例１＞
実施例１における水性有機系顔料に代えてベンガラ（酸化鉄、無機系顔料）を、混合ゴムラテックス（固形分濃度５０重量％）１００重量部に対して０．２重量部添加して凝固用ゴムラテックスを作成した。その他は実施例１と同様にして比較例１の電気用ゴム手袋を製造した。比較例１の電気用ゴム手袋は、カットしたところ、全体が赤褐色をした一色の一層からなり、断面が二色でなかった。
<Comparative Example 1>
In place of the aqueous organic pigment in Example 1, 0.2 part by weight of Bengala (iron oxide, inorganic pigment) is added to 100 parts by weight of the mixed rubber latex (solid content concentration 50% by weight) to solidify the rubber. Latex was made. Otherwise, the electrical rubber glove of Comparative Example 1 was produced in the same manner as in Example 1. When the electrical rubber glove of Comparative Example 1 was cut, it consisted of one layer of reddish brown as a whole, and the cross section was not bicolor.
＜比較例２＞
実施例１における水性有機系顔料を添加していない第１凝固用ゴムラテックスを、その他は第１実施例と同様の構成で作成した。アルミニウム製の手袋の型をオーブンで６５℃に予熱し、前記第１凝固用ゴムラテックス中に１０秒間浸漬し、手袋の型の表面で第１凝固用ゴムラテックスを凝固させて手袋形状の第１のゴム被膜を形成した。次に、実施例１の凝固用ゴムラテックスを第２凝固用ゴムラテックスとして使用し、第１のゴム被膜が表面に形成された前記手袋の型を第２凝固用ゴムラテックス中に浸漬し、前記第１ゴム被膜上に第２ゴム被膜を積層した。次に、１６０℃の蒸気釜で７０分間、加硫および乾燥させた後、二層のゴム皮膜を手袋の型から外し、比較例２の電気用ゴム手袋を得た。比較例２の電気用ゴム手袋は、カットしたところ、第２のゴム被膜からなる外側部分が濃い赤色、第１のゴム被膜からなる内側部分が白色からなり、断面が二色の二層になっていた。比較例２の電気用ゴム手袋は、第１のゴム被膜と第２のゴム被膜の間に不純物が混入して耐電圧が低下するおそれや、第１のゴム被膜と第２のゴム被膜の接着力が低下し、強度が不足するおそれがある。
<Comparative example 2>
The first coagulation rubber latex to which no aqueous organic pigment was added in Example 1 was prepared in the same configuration as in the first example. An aluminum glove mold is preheated to 65 ° C. in an oven, immersed in the first coagulation rubber latex for 10 seconds, and the first coagulation rubber latex is coagulated on the surface of the glove mold to form a glove-shaped first. A rubber coating was formed. Next, the coagulation rubber latex of Example 1 was used as the second coagulation rubber latex, the glove mold having the first rubber coating formed on the surface thereof was immersed in the second coagulation rubber latex, A second rubber coating was laminated on the first rubber coating. Next, after vulcanization and drying for 70 minutes in a steam bath at 160 ° C., the two-layer rubber film was removed from the glove mold, and an electric rubber glove of Comparative Example 2 was obtained. When the electric rubber glove of Comparative Example 2 was cut, the outer portion made of the second rubber coating was dark red, the inner portion made of the first rubber coating was white, and the cross section was two layers of two colors. It was. In the electric rubber glove of Comparative Example 2, there is a possibility that impurities are mixed between the first rubber coating and the second rubber coating and the withstand voltage may be lowered, or the adhesion between the first rubber coating and the second rubber coating. There is a risk that strength is reduced and strength is insufficient.
このように、本発明の電気用ゴム手袋によれば、外側表面の着色部分と内側部分とでゴムの色が異なるため、使用により外側表面の着色部分が摩耗して内側部分が露出すると、露出した内側部分の色でゴムの厚み減少を視覚的に認識することができ、新しい電気用ゴム手袋に交換する時期を把握することができる。また、本発明の電気用ゴム手袋は、着色部分のゴムと内側部分のゴムを積層した二層構造のものとは異なり、単層のゴムからなるため、着色部分と内側部分間に不純物が混入して絶縁性が低下したり、着色部分と内側部分の結合強度が不足して剥離し易くなったり、強度が低下したりするおそれがない。 As described above, according to the electric rubber glove of the present invention, since the color of the rubber is different between the colored portion on the outer surface and the inner portion, the colored portion on the outer surface is worn by use and the inner portion is exposed. It is possible to visually recognize the decrease in the thickness of the rubber by the color of the inner part, and it is possible to grasp the time for replacement with a new electric rubber glove. In addition, the electric rubber glove of the present invention is different from the two-layer structure in which the colored portion rubber and the inner portion rubber are laminated, and is made of a single layer rubber. Therefore, impurities are mixed between the colored portion and the inner portion. As a result, there is no fear that the insulating property is lowered, the bonding strength between the colored portion and the inner portion is insufficient, and the peeling becomes easy and the strength is not lowered.
また、本発明の電気用ゴム手袋の製造方法によれば、二色のゴムを形成するために凝固用ゴムラテックスに手袋の型を２回浸漬する必要がなく、１回だけでよいために簡略な作業で二色の高圧用の電気用ゴム手袋を製造することができる。さらに、凝固用ゴムラテックスへの手袋の型の浸漬が１回だけでよいため、外側表面の着色部分と内側部分間に不純物が混入してゴム手袋の絶縁性が低下したり、ゴム手袋の着色部分と内側部分で結合強度が不足して剥離し易くなったり、強度が低下したりするおそれがない。 In addition, according to the method for manufacturing an electrical rubber glove of the present invention, it is not necessary to immerse the glove mold twice in the coagulation rubber latex in order to form two-color rubber. It is possible to produce electric rubber gloves for two colors of high pressure with a simple operation. Further, since the glove mold is immersed only once in the rubber latex for coagulation, impurities are mixed between the colored portion on the outer surface and the inner portion to reduce the insulating property of the rubber glove, or the rubber glove is colored. There is no fear that the bonding strength is insufficient between the portion and the inner portion, and it is easy to peel off or the strength is not lowered.
１０ 電気用ゴム委手袋
１１ 単層のゴム
１１ａ 着色部分
１１ｂ 内側部分
10 Electric Rubber Gloves 11 Single Layer Rubber 11a Colored Part 11b Inner Part
Claims (4)
前記凝固用ゴムラテックスに水性有機系顔料を含有し、
前記ゴム手袋は前記凝固用ゴムラテックスから形成された単層のゴムからなり、
前記単層のゴムは、前記凝固用ゴムラテックスに含有した前記水性有機系顔料で着色された着色部分を前記ゴム手袋の外側表面に有し、前記外側表面の着色部分と該着色部分に隣接する内側部分に含有される前記水性有機系顔料が、前記内側部分よりも前記外側表面の着色部分に密に集まって前記外側表面の着色部分が着色されていることにより、前記外側表面の着色部分に隣接する内側部分と前記外側表面の着色部分とでゴムの色が異なる二色からなることを特徴とする電気用ゴム手袋。 In rubber gloves for electric use formed from rubber latex for coagulation in which vulcanizing agent and heat sensitive coagulant are added to rubber latex,
Containing an aqueous organic pigment in the rubber latex for coagulation,
The rubber glove is composed of a single layer of rubber formed from the rubber latex for coagulation,
The single-layer rubber has a colored portion colored with the aqueous organic pigment contained in the coagulating rubber latex on the outer surface of the rubber glove, and is adjacent to the colored portion on the outer surface and the colored portion. The water-based organic pigment contained in the inner portion is more densely gathered in the colored portion on the outer surface than the inner portion, and the colored portion on the outer surface is colored, whereby the colored portion on the outer surface is colored. An electrical rubber glove comprising two colors having different rubber colors between an adjacent inner portion and a colored portion of the outer surface.
前記手袋の型から前記手袋形状の単層のゴム被膜を外し、手袋の形状をした加硫乾燥用型に装着して加硫及び乾燥することにより、
前記凝固用ゴムラテックスから形成された手袋形状の単層のゴムからなり、外側表面には前記水性有機系顔料で着色された着色部分を有し、前記外側表面の着色部分に隣接する内側部分と前記外側表面の着色部分とでゴムの色が異なる二色のゴム手袋を製造することを特徴とする電気用ゴム手袋の製造方法。 The coagulated rubber latex adhering to the surface of the glove mold is coagulated by immersing a preheated glove mold in a rubber latex for coagulation in which a vulcanizing agent, a heat-sensitive coagulant and an aqueous organic pigment are added to the rubber latex. To form a glove-shaped single-layer rubber coating,
By removing the glove-shaped single-layer rubber coating from the glove mold, attaching it to a glove-shaped vulcanization drying mold, vulcanizing and drying,
The glove-shaped single layer rubber formed from the rubber latex for coagulation has a colored portion colored with the aqueous organic pigment on the outer surface, and an inner portion adjacent to the colored portion on the outer surface; A method for producing an electrical rubber glove comprising producing two-color rubber gloves having different rubber colors depending on the colored portion of the outer surface.
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Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |