JP3778467B2 - Self-supporting fiber reinforced tape - Google Patents
Self-supporting fiber reinforced tape Download PDFInfo
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- JP3778467B2 JP3778467B2 JP27048397A JP27048397A JP3778467B2 JP 3778467 B2 JP3778467 B2 JP 3778467B2 JP 27048397 A JP27048397 A JP 27048397A JP 27048397 A JP27048397 A JP 27048397A JP 3778467 B2 JP3778467 B2 JP 3778467B2
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- Prior art keywords
- self
- fiber
- supporting
- reinforced tape
- fiber reinforced
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Description
【０００１】
【発明の属する技術分野】
本発明は、自立性および電気絶縁性に優れた自立性繊維補強テープ、その製造方法およびそのテープを用いた自動巻取り式巻き尺に関するものである。
【０００２】
【従来の技術】
ある長さのテープ状物の一端のみを保持して水平にしたとき、途中で折れ曲がらず、略直線状を保つことを自立性を有すると称している。
【０００３】
従来から巻き尺は、そのスケール部分に自立性のテープ状物を必要とし、従来から金属製のものが使用されている。また、金属製以外のものとしては、炭素繊維補強テープが特開昭５７−３５７０２号公報に記載されているが、これらを電気工事現場で使用するには金属製のものと同様、感電の危険性があり使用範囲が限定される問題があった。
【０００４】
この問題を解決するものとして、実開昭４８−１０４６５号公報には、「ガラス繊維とエポキシ樹脂を使用し、幅方向にアール（曲率）を持たせた巻尺」が記載されている。
【０００５】
また、実公昭５７−２２０８１号公報には芳香族ポリアミド繊維を用いた巻き尺が記載され、特公昭６３ー２１１２１号公報にはガラス繊維からなる芯材に熱硬化性ポリエステル樹脂を含浸させた巻き尺が記載されている。
【０００６】
【発明が解決しようとする課題】
しかしながら、ガラス繊維は一度折ってしまうと自立性がなくなるため、樹脂の含浸が重要となり、通常のエポキシ樹脂を含浸させたのではガラスとの密着性が悪く、時間とともに自立性が減り、ケースの中に巻込んだ時の巻き癖もついてきて問題であった。
【０００７】
また、ポリエステル樹脂は硬化が早くて生産性がよく、比較的安価で多様な成形法が可能であるなどの長所はあるものの、接着性、靭性、機械的強度、熱および寸法安定性、電気特性の点で問題があった。
【０００８】
一方、芳香族ポリアミド繊維は強度および電気絶縁性に優れ、自立性テープにふさわしい材質であるが、上記実公昭５７ー２２０８１号公報には芳香族ポリアミドの織物の表面を樹脂で被覆することが記載されているが、具体的には可撓性樹脂、たとえばポリアミド類、ポリエステル類、軟質ポリ塩化ビニール、ポリウレタン類、ゴムなどの樹脂に埋め込むことが記載されているが、このような樹脂に埋め込んだのでは、自立性の良い又は高い（薄い）テープは得られない。
【０００９】
本発明の目的は、上記の従来技術の欠点を解消し、自立性および電気絶縁性に優れた自立性繊維補強テープ、その製造方法およびそのテープを用いた巻き尺を提供することにある。
【００１０】
【課題を解決するための手段】
本発明は次のような手段を採るものである。
（１）ガラス繊維および／またはアラミド繊維からなる帯状物であって、水系メラミン樹脂が含浸・硬化され、さらにその上に水系エポキシ樹脂がコーティングされていることを特徴とする自立性繊維補強テープ。
【００１２】
（２）帯状物が、ガラス繊維および／またはアラミド繊維の織物であることを特徴とする上記（１）記載の自立性繊維補強テープ。
【００１３】
（３）帯状物が、ガラス繊維とアラミド繊維の交織織物であることを特徴とする上記（１）記載の自立性繊維補強テープ。
【００１４】
（４）帯状物が、よこ糸にガラス繊維を用い、たて糸にガラス繊維および／またはアラミド繊維を用いた交織織物であることを特徴とする上記（１）記載の自立性繊維補強テープ。
【００１５】
（５）帯状物が幅方向に湾曲していることを特徴とする上記（１）記載の自立性繊維補強テープ。
【００１６】
（６）ガラス繊維および／またはアラミド繊維からなる帯状物に水系メラミン樹脂を含浸し、さらにその上に水系エポキシ樹脂がコーティングし、形状付与手段によって帯状物の幅方向に湾曲させると共に前記水系メラミン樹脂を熱硬化させることを特徴とする自立性繊維補強テープの製造方法。
【００１７】
（７）形状付与手段がロール、型またはガイドであることを特徴とする上記（７）記載の自立性繊維補強テープの製造方法。
【００１８】
（８）上記（１）〜（５）のいずれかに記載の自立性繊維補強テープをスケールとして用いた巻き尺。
【００１９】
【発明の実施の形態】
本発明におけるガラス繊維とはガラスの長繊維であり、市販のものを使用できる。アラミド繊維も特に限定されず、パラ配向アラミド繊維あるいは共重合タイプのアラミド繊維を使用することができ、商品名としては”ケブラー”、”トワロン”、”テクノーラ”等が好ましく使用できる。
【００２０】
本発明における帯状物とは、ガラス繊維および／またはアラミド繊維の織物または編み物を一定幅で長尺にしたもので、幅は０．５ｍｍから５０ｍｍが好ましく、長さは連続して作られるので制限はない。ガラス繊維とアラミド繊維はそれぞれ単独で使用可能であるが、交織織物が好ましい。交織織物の場合、よこ糸にガラス繊維を用い、たて糸にガラス繊維および／またはアラミド繊維を用いることが好ましい。織り種は特限定されないが平織が寸法安定性がよく、好ましい。
【００２１】
本発明においては、帯状物に水系メラミン樹脂を含浸させ、かつ硬化する。水系メラミン樹脂とは、そのままあるいは反応性界面活性剤を用いて水に分散させることができるものをいう。水系メラミン樹脂は硬化速度が速く、またテープに自立性を与える能力に優れているので含浸量は少量でよい。しかし、本発明では、テープの表面平滑性を向上させるために、さらにその上に水系エポキシ樹脂をコーティングする。水系エポキシ樹脂は、メラミン樹脂に比べて硬化速度が遅いので、単独で使用すると帯状物に含浸させたものを一度巻き取って、別の工程で硬化を行なう必要がある。従って、本発明における、メラミン樹脂の上にコーティングするエポキシ樹脂のコーティング膜は薄くすることが好ましい。水系エポキシ樹脂としては、水系ビスフェノールＡ（ＢＰＡ）型エポキシ樹脂、水系ノボラック型エポキシ樹脂、水系ウレタン変性エポキシ樹脂などが好ましく使用できる。
【００２２】
帯状物に樹脂を含浸させる方法は通常のディップ方式が好ましく、硬化は熱硬化が好ましい。帯状物に樹脂を含浸後、本発明においては、連続して帯状物を熱処理して、帯状物の幅方向に湾曲させることができる。湾曲させる手段としては、ロール、型、ガイドなどを用いることができ、通常加熱して、樹脂の硬化と同時に行う。湾曲の程度は、曲率半径７〜２０ｍｍ程度が好ましい。曲率半径が小さいほど自立性はよくなるが、たとえば巻き尺用テープにしたとき、目盛りが読みにくいという不都合が生じるので、さらに好ましくは曲率半径９〜１５ｍｍである。
【００２３】
本発明の繊維補強テープは、自立性および電気絶縁性に優れているので巻き尺、特に自動巻き込み式の巻き尺のテープとして有用である。
【００２４】
【実施例】
たて糸としてガラス繊維（ユニカユーエムグラス社製）１５０1/2 とアラミド繊維（東レ・デュポン社製”ケブラー−４９”）４００ｄを使用し、１９ｍｍ幅に合わせて３２本使い、よこ糸として１５０1/2 のガラス繊維を２５ｍｍ長に対して２９本使って図１に示すような平織の帯状物を作成した。
【００２５】
図２、３で示すような装置に、帯状物を通し、表１に示す樹脂を含浸させ、続いて帯状物を湾曲させると同時に樹脂の硬化を行った。ただし、本発明に係るサンプル４は、メラミン樹脂のバス４の後にエポキシ樹脂のコーティング工程（図示せず）を追加した。
【００２６】
得られたテープを外径３０ｍｍの巻芯に巻いて１週間室温下で固定後、取りだし、自立性を図４に示す測定装置を用いて測定した。製造コストは水系エポキシ樹脂を用いたものを１００として比較した。結果を表１に示す。
【００２７】
【表１】
表１の結果から、水系メラミン樹脂を含浸させたものは優れた自立性を示すことがわかる。水系エポキシ樹脂は自立性は十分であるが、硬化速度が遅いため、コスト高となる。水系メラミン樹脂の上に水系エポキシ樹脂をコーティングしたものは、エポキシ樹脂のコーティング膜を薄くしたので、メラミンの硬化工程をそのまま使って硬化することができ、若干のコスト高で済ますことができた。
【００２９】
【発明の効果】
本発明の繊維補強テープはガラス繊維および／またはアラミド繊維をベースとして水系メラミン樹脂を含浸させ、かつ幅方向に湾曲させたものであるため、電気絶縁性に優れ、かつ自立性に優れており、巻き尺、特に自動巻き込み式巻き尺のメジャーテープとして特に優れている。また、水系メラミン樹脂は硬化速度が速いため、含浸と硬化を等速で、連続して行なうことができ、製造コストを低減することができ、かつ、前述の如く、水系メラミン樹脂の上に水系エポキシ樹脂を薄くコーティングしたので、若干のコスト高のみで、テープの表面平滑性を向上できる。
【図面の簡単な説明】
【図１】 本発明の帯状物の一例の織り組織示す。
【図２】 本発明の樹脂含浸および熱硬化装置の説明図を示す。
【図３】 本発明の湾曲化装置の説明図を示す。
【図４】本発明の自立性測定装置の説明図
【符号の説明】
１ たて糸
２ よこ糸
３ クリール
４ 樹脂バス
５ 加熱炉
６ 帯状物
７ 巻取機
８ 湾曲ロール
９ 湾曲ガイド[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a self-supporting fiber reinforced tape excellent in self-supporting property and electrical insulation, a method for producing the tape, and an automatic winding tape using the tape.
[0002]
[Prior art]
When only one end of a certain length of tape-like material is held and leveled, it is referred to as having a self-supporting property that it does not bend in the middle and maintains a substantially straight shape.
[0003]
Conventionally, a tape measure requires a self-supporting tape-like material at the scale portion, and a metal tape measure has been conventionally used. Further, as other than metal, carbon fiber reinforced tapes are described in Japanese Patent Application Laid-Open No. 57-35702. There is a problem that the range of use is limited.
[0004]
In order to solve this problem, Japanese Utility Model Publication No. 48-10465 describes "a tape measure using glass fiber and epoxy resin and having a radius (curvature) in the width direction".
[0005]
Japanese Utility Model Publication No. 57-22081 discloses a tape measure using an aromatic polyamide fiber, and Japanese Patent Publication No. 63-21121 is a tape measure in which a core material made of glass fiber is impregnated with a thermosetting polyester resin. Are listed.
[0006]
[Problems to be solved by the invention]
However, since glass fiber is not self-supporting once folded, impregnation with resin is important. When impregnated with normal epoxy resin, the adhesion with glass is poor and the self-supporting property decreases with time. There was also a problem with the curl when it was caught inside.
[0007]
In addition, polyester resin has advantages such as fast curing, good productivity, relatively low cost and various molding methods, but adhesion, toughness, mechanical strength, thermal and dimensional stability, electrical properties There was a problem in terms of.
[0008]
On the other hand, the aromatic polyamide fiber is excellent in strength and electrical insulation and is a material suitable for a self-supporting tape. However, the Japanese Utility Model Publication No. 57-22081 describes that the surface of an aromatic polyamide fabric is coated with a resin. Although it is specifically described that it is embedded in a resin such as a flexible resin such as polyamides, polyesters, soft polyvinyl chloride, polyurethanes, rubber, etc., it is embedded in such a resin. Therefore, a tape with good or high self-supporting property (thin) cannot be obtained.
[0009]
An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art and to provide a self-supporting fiber reinforced tape excellent in self-supporting property and electrical insulation, a manufacturing method thereof, and a tape measure using the tape.
[0010]
[Means for Solving the Problems]
The present invention employs the following means.
(1) A self-supporting fiber-reinforced tape, which is a strip made of glass fiber and / or aramid fiber, impregnated and cured with an aqueous melamine resin , and further coated with an aqueous epoxy resin .
[0012]
( 2 ) The self-supporting fiber-reinforced tape according to the above (1), wherein the strip is a woven fabric of glass fiber and / or aramid fiber.
[0013]
( 3 ) The self-supporting fiber reinforced tape according to the above (1), wherein the strip is a woven fabric of glass fibers and aramid fibers.
[0014]
( 4 ) The self-supporting fiber-reinforced tape according to (1) above, wherein the belt is a woven fabric using glass fibers for the weft and glass fibers and / or aramid fibers for the warp.
[0015]
( 5 ) The self-supporting fiber reinforced tape according to the above (1), wherein the strip is curved in the width direction.
[0016]
( 6 ) A strip of glass fiber and / or aramid fiber is impregnated with a water-based melamine resin, further coated with a water-based epoxy resin, and curved in the width direction of the belt-shaped material by means of shape imparting means, and the water-based melamine resin. A method for producing a self-supporting fiber-reinforced tape, characterized by thermosetting
[0017]
( 7 ) The method for producing a self-supporting fiber-reinforced tape according to ( 7 ), wherein the shape imparting means is a roll, a mold or a guide.
[0018]
(8) above (1) a tape measure was used as the scale of the self-supporting fiber-reinforced tape according to any one of - (5).
[0019]
DETAILED DESCRIPTION OF THE INVENTION
The glass fiber in this invention is a glass long fiber, and can use a commercially available thing. The aramid fibers are not particularly limited, and para-oriented aramid fibers or copolymer-type aramid fibers can be used, and “Kevlar”, “Twaron”, “Technola”, etc. are preferably used as trade names.
[0020]
In the present invention, the band-like material is a glass fiber and / or aramid fiber woven or knitted fabric having a constant width and a long width, preferably 0.5 mm to 50 mm, and the length is continuously limited. There is no. Glass fiber and aramid fiber can be used alone, but a woven fabric is preferred. In the case of a union woven fabric, it is preferable to use glass fibers for the weft and glass fibers and / or aramid fibers for the warp. The type of weaving is not particularly limited, but plain weaving is preferable because it has good dimensional stability.
[0021]
In the present invention, the strip is impregnated with an aqueous melamine resin and cured. The water-based melamine resin refers to a resin that can be dispersed in water as it is or using a reactive surfactant. The water-based melamine resin has a high curing rate and is excellent in the ability to give the tape self-supporting property, so that the amount of impregnation is small. However, in the present invention, in order to improve the surface smoothness of the tape, it further coated with an aqueous epoxy resin thereon. Since the water-based epoxy resin has a slower curing speed than the melamine resin, it is necessary to wind up the material impregnated in the band once and cure it in a separate process. Therefore, it is preferable to thin the coating film of the epoxy resin coated on the melamine resin in the present invention. As the water-based epoxy resin, a water-based bisphenol A (BPA) type epoxy resin, a water-based novolac type epoxy resin, a water-based urethane-modified epoxy resin and the like can be preferably used.
[0022]
The method of impregnating the strip with resin is preferably a normal dip method, and the curing is preferably thermosetting. In the present invention, after the strip is impregnated with the resin, the strip can be continuously heat-treated and bent in the width direction of the strip. As a means for bending, a roll, a mold, a guide, or the like can be used. Usually, heating is performed simultaneously with curing of the resin. The degree of curvature is preferably about 7 to 20 mm in radius of curvature. The smaller the radius of curvature, the better the self-supporting property. However, when the tape is used as a tape measure, for example, it is difficult to read the scale, so the radius of curvature is more preferably 9 to 15 mm.
[0023]
Since the fiber reinforced tape of the present invention is excellent in self-supporting property and electrical insulation, it is useful as a tape measure, particularly as an automatic winding tape.
[0024]
【Example】
Glass fiber (manufactured by Unica Yum Glass) 1501/2 and aramid fiber ("Kevlar-49" manufactured by Toray DuPont) 400d are used as warp yarns, 32 pieces are used in accordance with the width of 19 mm, and glass of 1501/2 is used as weft yarn. A plain weave strip as shown in FIG. 1 was prepared using 29 fibers with a length of 25 mm.
[0025]
The strips were passed through the apparatus as shown in FIGS. 2 and 3 and impregnated with the resin shown in Table 1, followed by curving the strips and simultaneously curing the resin. However, in the sample 4 according to the present invention, an epoxy resin coating process (not shown) was added after the melamine resin bath 4.
[0026]
The obtained tape was wound around a core having an outer diameter of 30 mm, fixed at room temperature for one week, taken out, and the self-supporting property was measured using a measuring apparatus shown in FIG. Manufacturing cost was compared with 100 using water-based epoxy resin. The results are shown in Table 1.
[0027]
[Table 1]
From the results in Table 1, it can be seen that those impregnated with water-based melamine resin exhibit excellent self-supporting properties. A water-based epoxy resin has sufficient self-sustainability, but is expensive because of its slow curing rate. In the case of water-based melamine resin coated with water-based epoxy resin, the epoxy resin coating film was thinned, so it could be cured using the melamine curing process as it was, and the cost could be increased slightly.
[0029]
【The invention's effect】
Since the fiber reinforced tape of the present invention is impregnated with water-based melamine resin based on glass fiber and / or aramid fiber and curved in the width direction, it is excellent in electrical insulation and independence. It is particularly excellent as a measuring tape for tape measure, especially automatic winding type tape measure. In addition, since the water-based melamine resin has a high curing speed, the impregnation and curing can be carried out continuously at a constant speed, and the manufacturing cost can be reduced . As described above, the water-based melamine resin is water-based on the water-based melamine resin. Since the epoxy resin is thinly coated, the surface smoothness of the tape can be improved with only a slight cost increase.
[Brief description of the drawings]
FIG. 1 shows a woven structure of an example of a band according to the present invention.
FIG. 2 is an explanatory view of a resin impregnation and thermosetting apparatus of the present invention.
FIG. 3 is an explanatory view of a bending apparatus of the present invention.
FIG. 4 is an explanatory diagram of a self-supporting measuring apparatus according to the present invention.
DESCRIPTION OF
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27048397A JP3778467B2 (en) | 1997-09-17 | 1997-09-17 | Self-supporting fiber reinforced tape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27048397A JP3778467B2 (en) | 1997-09-17 | 1997-09-17 | Self-supporting fiber reinforced tape |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1193076A JPH1193076A (en) | 1999-04-06 |
| JP3778467B2 true JP3778467B2 (en) | 2006-05-24 |
Family
ID=17486931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27048397A Expired - Fee Related JP3778467B2 (en) | 1997-09-17 | 1997-09-17 | Self-supporting fiber reinforced tape |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3778467B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001208502A (en) * | 2000-01-28 | 2001-08-03 | Tajima Tool Corp | Tape measure |
| CN114210780A (en) * | 2017-02-08 | 2022-03-22 | 米沃奇电动工具公司 | Method of forming a variably stressed spring for a tape measure |
| CN114892393B (en) * | 2022-06-29 | 2023-01-20 | 北京化工大学 | Carbon fiber device based on MXene phase modification |
-
1997
- 1997-09-17 JP JP27048397A patent/JP3778467B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1193076A (en) | 1999-04-06 |
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