JP2008101294A - Flameproof woven fabric with excellent comfort and flameproof work clothes comprising the same - Google Patents
Flameproof woven fabric with excellent comfort and flameproof work clothes comprising the same Download PDFInfo
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Abstract
【課題】 通気性と軽量性を確保しながらも同時に高い防炎性能を有する防炎織布ならびに防炎作業服を提供する。
【解決手段】 （１）構成する繊維が耐熱性繊維および炭化性難燃繊維からなり、その重量比率が６５：３５〜３５：６５である紡績糸であること、（２）目付けが２４０ｇ／ｍ２以下であること、（３）通気度が１５ｃｍ３／ｃｍ２／ｓ以上であること、（４）限界酸素指数（ＬＯＩ）が２８以上であること、（５）空気中４００℃×３０分熱処理における重量減少率が３５〜４５％であることの全てを満足し、かつ単一層からなる防炎性織布。
【選択図】なしPROBLEM TO BE SOLVED: To provide a flameproof woven fabric and a flameproof work clothes having high flameproof performance while ensuring air permeability and light weight.
SOLUTION: (1) The constituent fibers are heat-resistant fibers and carbonized flame-retardant fibers, and the weight ratio is 65:35 to 35:65, and (2) the basis weight is 240 g / m. 2 or less, (3) Air permeability is 15 cm 3 / cm 2 / s or more, (4) Limit oxygen index (LOI) is 28 or more, (5) 400 ° C. in air for 30 minutes A flameproof woven fabric that satisfies all the fact that the weight reduction rate during heat treatment is 35 to 45%, and is composed of a single layer.
[Selection figure] None
Description
本発明は、防炎織布およびそれからなる防炎作業服に関し、さらに詳細には連続装用に耐え得る快適性と火炎防護性を兼備した防炎織布およびそれからなる作業服に関する。 The present invention relates to a flameproof woven fabric and a flameproof workwear, and more particularly to a flameproof woven fabric having both comfort and flame protection that can withstand continuous wear and a workwear comprising the same.
従来より、防炎衣料を構成する繊維としては、不燃性のアスベスト繊維、ガラス繊維、アラミド繊維、ポリフェニレンスルフィド、ポリイミド、ポリベンズイミダゾールなどの難燃性繊維を主体とし、これらの不燃性または難燃性繊維からなる布帛に金属アルミニウム等をコーティングあるいは蒸着などにより表面加工したものが多く使用されていたが、これらは通気性がなく、長時間の作業には不向きであった。これらの問題に対し、透湿性を向上させるために二層構造にして生地の内部に空気層を形成することで改善を図ったり、さらには中間層なるものを配置して、さらなる多層化による改善を図ることが検討されている（例えば、特許文献１〜２参照。）。
こうした多層化による通気性の改善は認められるものの、相対的に生地は厚くなるため、生地内外との空気の流れは悪く、快適といえるレベルのものには程遠い。また多層化することで生地が厚くなった結果、作業服の重量が増加するため、常用するような用途では作業者に大きな負担となる。実際に、前記のような生地は消防服、消火服等のように一時的に着用する用途が主であり、常用するような用途にはほとんど使用されない。
Conventionally, as the fiber constituting the flameproof clothing, flame retardant fibers such as non-flammable asbestos fiber, glass fiber, aramid fiber, polyphenylene sulfide, polyimide, polybenzimidazole, and the like, these flame retardant or flame retardant are mainly used. Many fabrics made of conductive fibers are coated with metallic aluminum or the like by surface treatment by vapor deposition or the like, but these are not breathable and are not suitable for long-time work. In order to improve the moisture permeability, these problems can be improved by forming a two-layer structure and forming an air layer inside the fabric. (For example, refer to Patent Documents 1 and 2).
Although improvement in air permeability by such multi-layering is recognized, since the fabric becomes relatively thick, the flow of air between the inside and outside of the fabric is poor, and it is far from the level that can be said to be comfortable. In addition, since the cloth becomes thicker as a result of increasing the number of layers, the weight of the work clothes increases, so that it is a heavy burden on the worker in applications that are used regularly. Actually, the fabric as described above is mainly used for temporary wear such as fire fighting clothes and fire fighting clothes, and is rarely used for regular use.
またアラミドを芯部に、セルロース系繊維を鞘部に配置した繊維からなる布帛が検討されている（例えば、特許文献３参照。）。しかしながらこの方法では布帛の目付けが２８０〜２９０ｇ／ｍ２程度では防護性能は発現するものの、低目付け、とりわけ２４０ｇ／ｍ２以下では鞘部のセルロース繊維が初期に燃焼してしまい、繊維間空隙が大きくなった結果として炎が通過してしまい、防炎性能は著しく低下する。 Further, a fabric made of a fiber in which aramid is used as a core and cellulosic fibers are used as a sheath has been studied (for example, see Patent Document 3). However, in this method, when the fabric weight is about 280 to 290 g / m 2 , the protective performance is exhibited, but at a low weight, particularly 240 g / m 2 or less, the cellulose fibers in the sheath part are initially burned, and the inter-fiber voids are As a result of the increase, the flame passes and the flameproof performance is significantly reduced.
さらに、限界酸素指数（ＬＯＩ）が４５以上の耐炎性短繊維と難燃性短繊維からなる不織布が検討されている（例えば特許文献４参照。）。しかし不織布は織布に比べて密度が低いため生地が厚くなること、および繊維の脱落が大きく洗濯耐久性がないことから、自動車、鉄道車両、航空機、空調機、建材には使用可能であるが、作業服などの衣料用途には不適であった。 Furthermore, a nonwoven fabric composed of flame resistant short fibers having a limiting oxygen index (LOI) of 45 or more and flame retardant short fibers has been studied (for example, see Patent Document 4). However, non-woven fabrics can be used for automobiles, railway vehicles, aircraft, air conditioners, and building materials because they have a lower density than woven fabrics, resulting in thick fabrics and large fiber shedding and lack of washing durability. It was unsuitable for clothes such as work clothes.
本発明の課題は、上記従来技術の有する問題点を解消し、通気性と軽量性を確保しながらも同時に高い防炎性能を有する防炎織布ならびに防炎作業服を提供することにある。 An object of the present invention is to provide a flameproof woven fabric and a flameproof work clothes that solve the above-mentioned problems of the prior art and have high flameproofing performance while ensuring air permeability and lightness.
本発明者等は上記課題を達成すべく鋭意検討を行った結果、耐熱性繊維と炭化性難燃繊維とを６５：３５〜３５：６５の比率にて均一混紡した紡績糸を用いて製織することで、軽量性、通気性を有しながら防炎性能に優れた織布が提供できることを見出した。 As a result of intensive studies to achieve the above-mentioned problems, the inventors have woven using a spun yarn obtained by uniformly blending heat-resistant fibers and carbonized flame-retardant fibers at a ratio of 65:35 to 35:65. Thus, it has been found that a woven fabric excellent in flameproofing performance while having lightness and breathability can be provided.
すなわち本発明は、下記（１）〜（５）を全て満足し、かつ単一層からなる防炎性織布である。
（１）構成する繊維が耐熱性繊維および炭化性難燃繊維からなり、その重量比率が６５：３５〜３５：６５である紡績糸であること、
（２）目付けが２４０ｇ／ｍ２以下であること、
（３）通気度が１５ｃｍ３／ｃｍ２／ｓ以上であること、
（４）限界酸素指数（ＬＯＩ）が２８以上であること、
（５）空気中４００℃×３０分熱処理における重量減少率が３５〜４５％であること。
That is, the present invention is a flameproof woven fabric satisfying all of the following (1) to (5) and comprising a single layer.
(1) The constituent fiber is composed of a heat-resistant fiber and a carbonized flame-retardant fiber, and the spun yarn has a weight ratio of 65:35 to 35:65.
(2) The basis weight is 240 g / m 2 or less,
(3) The air permeability is 15 cm 3 / cm 2 / s or more,
(4) The limiting oxygen index (LOI) is 28 or more,
(5) The weight reduction rate in heat treatment at 400 ° C. for 30 minutes in air is 35 to 45%.
また本発明は、好ましくは耐熱性繊維がメタ系アラミド繊維、パラ系アラミド繊維、フェノール繊維、ポリアリレート繊維、ポリフェニレンサルファイド繊維、ポリエーテルイミド繊維、ポリイミド繊維より選ばれた１種以上であり、また炭化性難燃繊維が、難燃性レーヨン、難燃性ビニロンより選ばれた１種以上で構成される上記の難燃性織布であり、さらに好ましくは上記構成の防炎性織布からなる作業服である。 In the present invention, the heat-resistant fiber is preferably at least one selected from a meta-aramid fiber, para-aramid fiber, phenol fiber, polyarylate fiber, polyphenylene sulfide fiber, polyetherimide fiber, and polyimide fiber. The carbonized flame retardant fiber is the above flame retardant woven fabric composed of one or more selected from flame retardant rayon and flame retardant vinylon, and more preferably composed of the flame retardant woven fabric having the above configuration. Work clothes.
本発明の織布は軽量性、通気性を有しながら、同時に高い防炎性能を有するので、連続装用に耐え得る快適性と火炎防護性を兼備した作業服を提供することができる。 The woven fabric of the present invention is lightweight and breathable, and at the same time has high flameproofing performance, so it is possible to provide work clothes that have both comfort and flame protection that can withstand continuous wear.
本発明の防炎性織布は構成する繊維が耐熱性繊維と炭化性難燃繊維からなることが必要である。すなわち、高温の火炎にも耐えうる耐熱性繊維を使用することで火炎を被爆した後の織布の強度を確保することができ、さらに炭化性難燃繊維を使用することで火災被爆時には炭化性難燃繊維はすみやかに炭化し、その結果として織布の網目を炭化物が被覆し、結果として火炎の通過を抑制でき、防炎性能を発現させることができる。
用いる耐熱性繊維は特に限定はないが、メタ系アラミド繊維、パラ系アラミド繊維、フェノール繊維、ポリアリレート繊維、ポリフェニレンサルファイド繊維、ポリエーテルイミド繊維、ポリイミド繊維等から１種以上選ばれることが好ましい。一方、炭化性難燃繊維は難燃性レーヨン、難燃性ビニロンから１種以上選ばれることが好ましい。なおこれら耐熱性繊維および／または炭化性難燃性繊維の一部に共重合や変性基導入、化学修飾などを施しても何等かまわない。
The flameproof woven fabric of the present invention is required to be composed of heat-resistant fibers and carbonized flame-retardant fibers. In other words, the use of heat-resistant fibers that can withstand high-temperature flames ensures the strength of the woven fabric after being exposed to a flame, and the use of carbonized flame-retardant fibers makes it carbonizable when exposed to fire. The flame retardant fiber is immediately carbonized, and as a result, the mesh of the woven fabric is covered with the carbide. As a result, the passage of the flame can be suppressed and the flameproof performance can be exhibited.
The heat-resistant fiber to be used is not particularly limited, but at least one selected from meta-aramid fiber, para-aramid fiber, phenol fiber, polyarylate fiber, polyphenylene sulfide fiber, polyetherimide fiber, polyimide fiber and the like is preferable. On the other hand, the carbonized flame retardant fiber is preferably selected from one or more of flame retardant rayon and flame retardant vinylon. In addition, it does not matter if copolymerization, modification group introduction, chemical modification, or the like is applied to a part of these heat-resistant fibers and / or carbonized flame-retardant fibers.
また本発明の防炎性織布は、上記した耐熱性繊維と炭化性難燃繊維の重量比率が６５：３５〜３５：６５である紡績糸を用いて製織することが必要である。耐熱性繊維の重量比率が３５より低い場合、燃焼時に布帛の強度低下が起こり、燃焼後には破れてしまい、破れた部分から火炎が進入してしまうため防護機能を果たさない。逆に炭化性難燃繊維の重量比率が３５より低い場合、繊維間の炭化により繊維間の空隙を十分に埋めることができず、そのため熱の通過を阻止することができない。したがって、熱への防護を保ちつつ、燃焼後の布帛の強度も保持するためには耐熱性繊維と炭化性難燃繊維の重量比率が６５：３５〜３５：６５であることが必要であり、好ましくは６０：４０〜４０：６０、より好ましくは５０：５０である。 Further, the flameproof woven fabric of the present invention needs to be woven using spun yarn having a weight ratio of 65:35 to 35:65 of the heat resistant fiber and the carbonized flame retardant fiber. When the weight ratio of the heat resistant fiber is lower than 35, the strength of the fabric is reduced during combustion, and the fabric is torn after the burning, and the protective function is not performed because the flame enters from the torn portion. Conversely, if the weight ratio of the carbonized flame retardant fiber is lower than 35, the gap between the fibers cannot be sufficiently filled due to carbonization between the fibers, and therefore the passage of heat cannot be prevented. Therefore, it is necessary that the weight ratio of the heat-resistant fiber and the carbonized flame-retardant fiber is 65:35 to 35:65 in order to maintain the strength of the fabric after combustion while maintaining protection against heat. Preferably it is 60: 40-40: 60, More preferably, it is 50:50.
さらに本発明の防炎性織布は、耐熱性繊維と炭化性難燃繊維の重量比率が上記した範囲を満足すると共に目付けが２４０ｇ／ｍ２以下、かつ通気度が１５ｃｍ３／ｃｍ２／ｓ以上であることが必要である。目付けが２４０ｇ／ｍ２よりも大きいと、快適性が悪化し、また作業服とした場合、服自体の重量が重くなり作業性が悪化する。好ましくは２３８ｇ／ｍ２以下、より好ましくは２３５ｇ／ｍ２以下である。また通気性が１５ｃｍ３／ｃｍ２／ｓ未満の場合、体温上昇による放熱が困難となる。好ましくは１６ｃｍ３／ｃｍ２／ｓ以上、より好ましくは１８ｃｍ３／ｃｍ２／ｓ以上である。従来、防護性能を高めるには例えばアラミド繊維のような耐熱繊維を大きい目付けで織ることで達成できたが、この場合、目付けが２４０ｇ／ｍ２よりも大きくなり、また通気度も１５ｃｍ３／ｃｍ２／ｓ未満でほとんどないため、火災現場などのように短時間の使用には耐えうるが、焼却炉や溶鉱炉等の作業場で終日作業する場合、作業服自体が重く、また作業服の内部はサウナのような非常に過酷な環境となる。 Furthermore, in the flameproof woven fabric of the present invention, the weight ratio of the heat resistant fiber and the carbonized flame retardant fiber satisfies the above range, the basis weight is 240 g / m 2 or less, and the air permeability is 15 cm 3 / cm 2 / s. That is necessary. When the basis weight is larger than 240 g / m 2 , the comfort is deteriorated, and when the work clothes are used, the weight of the clothes itself is increased and the workability is deteriorated. Preferably 238 g / m 2 or less, and more preferably not more than 235 g / m 2. When the air permeability is less than 15 cm 3 / cm 2 / s, it is difficult to release heat due to an increase in body temperature. Preferably it is 16 cm < 3 > / cm < 2 > / s or more, More preferably, it is 18 cm < 3 > / cm < 2 > / s or more. Conventionally, in order to improve the protective performance, it has been achieved by weaving heat-resistant fibers such as aramid fibers with a large basis weight, but in this case, the basis weight is larger than 240 g / m 2 and the air permeability is also 15 cm 3 / cm. Because it is less than 2 / s, it can withstand short-time use such as in a fire site, but when working all day in a workplace such as an incinerator or blast furnace, the work clothes themselves are heavy and the inside of the work clothes It becomes a very harsh environment like a sauna.
上記で得られた防炎性織布のＬＯＩ（限界酸素指数）値は２８以上である必要があり、好ましくは３０以上である。ＬＯＩ値が２８以上である防炎性織布は難燃性においても優れた特性を有する。さらに、上記で得られた防炎性織布を空気中４００℃×３０分間熱処理したときの重量減少率が３５〜４５％の範囲であることが必要である。前記条件における重量減少率が３５％未満である場合、炭化性難燃繊維の炭化が十分進行せず、炭化物被覆による防炎性能が発現しない。また重量減少率が４５％よりも大きい場合、火炎被爆後に生地の強度を確保することができず、生地が破損し、そこから火炎が進入してしまい、防炎性能を発現することができない。好ましくは３６〜４４％、より好ましくは３８〜４２％である。 The flameproof woven fabric obtained above needs to have a LOI (limit oxygen index) value of 28 or more, preferably 30 or more. A flameproof woven fabric having an LOI value of 28 or more has excellent properties in flame retardancy. Furthermore, the weight reduction rate when the flameproof woven fabric obtained above is heat-treated in air at 400 ° C. for 30 minutes needs to be in the range of 35 to 45%. When the weight reduction rate under the above conditions is less than 35%, the carbonization of the carbonized flame retardant fiber does not proceed sufficiently and the flameproofing performance due to the carbide coating is not exhibited. On the other hand, if the weight reduction rate is greater than 45%, the strength of the fabric cannot be ensured after the flame exposure, the fabric is damaged, the flame enters from there, and the flameproof performance cannot be exhibited. Preferably it is 36 to 44%, more preferably 38 to 42%.
また本発明の防炎性織布は、耐熱性繊維と炭化性難燃繊維が均一混合された紡績糸から構成されることが好ましい。例えば芯部に耐熱性繊維、鞘部に炭化性難燃繊維を配置した芯鞘型の紡績糸の場合、火炎被爆時には鞘部の炭化性難燃繊維のみが炭化されるが、この炭化物は容易に脱落して、炭化物の被覆を形成することが困難である。したがって防炎性能を発現させるためには耐熱性繊維と炭化性難燃繊維を均一混合し、耐熱性繊維間に炭化物を保持させるようにすることが重要である。ただし、ここでいう均一混合とは単純な混綿のことを指し、２種またはそれ以上の繊維の混合状態までは限定されず、不完全であってもかまわない。
このような紡績糸を製織して織布を得ることができるが、織組織については特に限定はなく、目付け、通気度、難燃性能が前記した条件を全て満足する範囲であればよい。
本発明で規定した性能を損なわない範囲であれば上記紡績糸以外の繊維、例えば導電性繊維や綿紡績糸等を好ましくは２０質量％以下、さらに好ましくは１０質量％以下の比率で混織してもかまわない。
The flameproof woven fabric of the present invention is preferably composed of spun yarn in which heat resistant fibers and carbonized flame retardant fibers are uniformly mixed. For example, in the case of a core-sheath type spun yarn in which a heat-resistant fiber is disposed in the core and a carbonized flame-retardant fiber is disposed in the sheath, only the carbonized flame-retardant fiber in the sheath is carbonized when exposed to a flame. It is difficult to form a carbide coating. Therefore, in order to develop the flameproof performance, it is important to uniformly mix the heat resistant fiber and the carbonized flame retardant fiber so that the carbide is held between the heat resistant fibers. However, the uniform mixing here refers to simple cotton blending, and is not limited to a mixed state of two or more kinds of fibers, and may be incomplete.
A woven fabric can be obtained by weaving such spun yarns, but the woven structure is not particularly limited as long as the basis weight, air permeability, and flame retardancy satisfy all the above-mentioned conditions.
In the range not impairing the performance defined in the present invention, fibers other than the above-mentioned spun yarn, for example, conductive fibers and cotton spun yarn, are preferably mixed at a ratio of 20% by mass or less, more preferably 10% by mass or less. It doesn't matter.
以下実施例によって、本発明を説明するが、本発明はこれら実施例により何等限定されるものではない。なお本発明において布帛の目付け、通気度、難燃性能等は以下の測定方法により測定されたものを意味する。 EXAMPLES The present invention will be described below with reference to examples, but the present invention is not limited to these examples. In the present invention, the fabric weight, air permeability, flame retardancy, etc. mean those measured by the following measuring methods.
［織布の目付け ｇ／ｍ２］
織布（生地）を１０ｃｍ×１０ｃｍに切り出し、１０５℃の熱風乾燥機中で４時間乾燥を行う。乾燥後、シリカゲルを入れたデシケーター中で室温まで放冷し、絶乾重量ａ（ｇ）を測定する。
絶乾重量ａ（ｇ）を用いて下記式より織布（生地）の目付けを計算し、求める。
目付け＝ａ×１００（ｇ／ｍ２）
[Weaving weight g / m 2 ]
A woven fabric (fabric) is cut into 10 cm × 10 cm and dried in a hot air dryer at 105 ° C. for 4 hours. After drying, it is allowed to cool to room temperature in a desiccator containing silica gel, and the absolute dry weight a (g) is measured.
The basis weight of the woven fabric (fabric) is calculated from the following formula using the absolute dry weight a (g) and obtained.
Fabric weight = a × 100 (g / m 2 )
［通気度 ｃｍ３／ｃｍ２／ｓ］
ＪＩＳ Ｌ１０９６Ａ試験法（フラジール型法）に準拠して測定した。
[Breath rate cm 3 / cm 2 / s]
It measured based on the JIS L1096A test method (fragile type method).
［限界酸素指数（ＬＯＩ）］
ＪＩＳ Ｌ１０９１試験法に準拠して測定した。
[Limited oxygen index (LOI)]
It measured based on the JIS L1091 test method.
［重量減少率］
織布（生地）の重量減少率の測定は、下記の手順に従って行った。
（１）前記した目付け測定に手順にしたがい、絶乾重量ａ（ｇ）を測定する。
（２）電気マッフル炉を４００℃まで昇温させる。
（３）（１）で絶乾重量を測定したサンプルを４００℃まで昇温した電気マッフル炉に入れ、３０分間熱処理する。
（４）３０分後、サンプルを取り出し、シリカゲル入りのデシケーター中で室温になるまで冷却する。
（５）冷却後、重量ｂ（ｇ）を測定し、下記式より重量減少率を算出する。
重量減少率（％）＝〔１−（ｂ／ａ）〕×１００
[Weight reduction rate]
The weight reduction rate of the woven fabric (fabric) was measured according to the following procedure.
(1) The absolute dry weight a (g) is measured according to the procedure for the above-mentioned basis weight measurement.
(2) The electric muffle furnace is heated up to 400 ° C.
(3) The sample whose absolute dry weight was measured in (1) is placed in an electric muffle furnace heated to 400 ° C. and heat-treated for 30 minutes.
(4) After 30 minutes, the sample is taken out and cooled to room temperature in a desiccator containing silica gel.
(5) After cooling, the weight b (g) is measured, and the weight reduction rate is calculated from the following formula.
Weight reduction rate (%) = [1- (b / a)] × 100
［防炎性能］
防炎性能の評価は、図１に示す装置を用いて以下のように実施した。
バーナーと織布（生地）との間隔は５ｃｍとし、織布（生地）の上部に温度測定用の熱電対温度計を配置し、バーナー点火前の温度Ｔ１（℃）を測定する。その後バーナーに点火し、５秒後の温度Ｔ２（℃）を測定し、その温度差ΔＴ＝Ｔ２−Ｔ１（℃）にて防炎性能を評価した。
人体において、ΔＴが２４℃より大きくなると、II度熱傷以上の重度の火傷になるといわれており、本発明においてはΔＴが２４℃以下の場合を防炎性能有りと判定した。
[Fireproof performance]
The flameproof performance was evaluated as follows using the apparatus shown in FIG.
The distance between the burner and the woven fabric (fabric) is 5 cm, and a thermocouple thermometer for temperature measurement is arranged on the upper portion of the woven fabric (fabric), and the temperature T1 (° C.) before the burner ignition is measured. Thereafter, the burner was ignited, the temperature T2 (° C) after 5 seconds was measured, and the flameproof performance was evaluated by the temperature difference ΔT = T2−T1 (° C).
In the human body, when ΔT is greater than 24 ° C., it is said that severe burns of a degree II or higher burn will occur, and in the present invention, a case where ΔT is 24 ° C. or less is determined to have flameproof performance.
［実施例１］
耐熱性繊維としてパラ系アラミド繊維（デュポン社製「ケブラー（登録商標）」）１０質量％、メタ系アラミド繊維（デュポン社製「ノーメックス（登録商標）」）４０質量％、炭化性難燃繊維として難燃ビニロン（株式会社クラレ製「バイナール」）５０質量％を均一に混合し、４０番手（綿番手）の紡績糸を得た。この紡績糸２本を合撚して双糸とし、綾組織にて製織を行った。得られた織布の物性を表１に示す。
[Example 1]
10% by mass of para-aramid fiber ("Kevlar (registered trademark)" manufactured by DuPont) as a heat-resistant fiber, 40% by mass of meta-aramid fiber ("Nomex (registered trademark)" manufactured by DuPont), as carbonized flame-retardant fiber Flame retardant vinylon (Kuraray Co., Ltd. “Vinard”) 50% by mass was uniformly mixed to obtain a 40th (cotton count) spun yarn. The two spun yarns were twisted into a double yarn and woven in a twill structure. The physical properties of the resulting woven fabric are shown in Table 1.
［実施例２］
耐熱性繊維としてパラ系アラミド繊維（デュポン社製「ケブラー（登録商標）」）３０質量％、メタ系アラミド繊維（デュポン社製「ノーメックス（登録商標）」）２０質量％、炭化性難燃繊維として難燃ビニロン（株式会社クラレ製「バイナール」）５０質量％を均一に混合し、４０番手の紡績糸を得た。この紡績糸２本を合撚して双糸とし、綾組織にて製織を行った。得られた織布の物性を表１に示す。
[Example 2]
30% by mass of para-aramid fiber ("Kevlar (registered trademark)" manufactured by DuPont) as a heat-resistant fiber, 20% by mass of meta-aramid fiber ("Nomex (registered trademark)" manufactured by DuPont), as carbonized flame-retardant fiber Flame retardant vinylon (Kuraray Co., Ltd. “Vinard”) 50% by mass was uniformly mixed to obtain 40th spun yarn. The two spun yarns were twisted into a double yarn and woven in a twill structure. The physical properties of the resulting woven fabric are shown in Table 1.
［実施例３］
耐熱性繊維としてパラ系アラミド繊維（デュポン社製「ケブラー（登録商標）」）１５質量％、メタ系アラミド繊維（デュポン社製「ノーメックス（登録商標）」）２０質量％、炭化性難燃繊維として難燃ビニロン（株式会社クラレ製「バイナール」）６５質量％を均一に混合し、４０番手の紡績糸を得た。この紡績糸２本を合撚して双糸とし、綾組織にて製織を行った。得られた織布の物性を表１に示す。
[Example 3]
Para-aramid fibers ("Kevlar (registered trademark)" manufactured by DuPont) 15% by mass as heat-resistant fibers, 20% by mass of meta-aramid fibers ("Nomex (registered trademark)" manufactured by DuPont), and carbonized flame-retardant fibers 65% by weight of flame retardant vinylon (“Vinal” manufactured by Kuraray Co., Ltd.) was uniformly mixed to obtain 40th spun yarn. The two spun yarns were twisted into a double yarn and woven in a twill structure. The physical properties of the resulting woven fabric are shown in Table 1.
［実施例４］
耐熱性繊維としてパラ系アラミド繊維（デュポン社製「ケブラー（登録商標）」）３０質量％、メタ系アラミド繊維（デュポン社製「ノーメックス（登録商標）」）３５質量％、炭化性難燃繊維として難燃ビニロン（株式会社クラレ製「バイナール」）３５質量％を均一に混合し、４０番手の紡績糸を得た。この紡績糸２本を合撚して双糸とし、綾組織にて製織を行った。得られた織布の物性を表１に示す。
[Example 4]
Para-aramid fiber ("Kevlar (registered trademark)" manufactured by DuPont) 30% by mass as heat-resistant fiber, 35% by mass of meta-aramid fiber ("Nomex (registered trademark)" manufactured by DuPont), and carbonized flame-retardant fiber Flame retardant vinylon (Kuraray Co., Ltd. “Vinard”) 35% by mass was uniformly mixed to obtain 40th spun yarn. The two spun yarns were twisted into a double yarn and woven in a twill structure. The physical properties of the resulting woven fabric are shown in Table 1.
［実施例５］
耐熱性繊維としてパラ系アラミド繊維（デュポン社製「ケブラー（登録商標）」）１５質量％、メタ系アラミド繊維（デュポン社製「ノーメックス（登録商標）」）２０質量％、炭化性難燃繊維として難燃レーヨン（レンチング社製）６５質量％を均一に混合し、４０番手の紡績糸を得た。この紡績糸２本を合撚して双糸とし、綾組織にて製織を行った。得られた織布の物性を表１に示す。
[Example 5]
Para-aramid fibers ("Kevlar (registered trademark)" manufactured by DuPont) 15% by mass as heat-resistant fibers, 20% by mass of meta-aramid fibers ("Nomex (registered trademark)" manufactured by DuPont), and carbonized flame-retardant fibers Flame retardant rayon (manufactured by Lenzing) 65% by mass was uniformly mixed to obtain 40th spun yarn. The two spun yarns were twisted into a double yarn and woven in a twill structure. The physical properties of the resulting woven fabric are shown in Table 1.
［実施例６］
耐熱性繊維としてパラ系アラミド繊維（デュポン社製「ケブラー（登録商標）」）３０質量％、メタ系アラミド繊維（デュポン社製「ノーメックス（登録商標）」）３５質量％、炭化性難燃繊維として難燃レーヨン（レンチング社製）３５質量％を均一に混合し、４０番手の紡績糸を得た。この紡績糸２本を合撚して双糸とし、綾組織にて製織を行った。得られた織布の物性を表１に示す。
[Example 6]
Para-aramid fiber ("Kevlar (registered trademark)" manufactured by DuPont) 30% by mass as heat-resistant fiber, 35% by mass of meta-aramid fiber ("Nomex (registered trademark)" manufactured by DuPont), and carbonized flame-retardant fiber Flame retardant rayon (manufactured by Lenzing) of 35% by mass was uniformly mixed to obtain 40th spun yarn. The two spun yarns were twisted into a double yarn and woven in a twill structure. The physical properties of the resulting woven fabric are shown in Table 1.
［実施例７］
耐熱性繊維としてポリアリレート繊維（株式会社クラレ製「ベクトラン（登録商標）」）５０質量％、炭化性難燃繊維として難燃レーヨン（レンチング社製）５０質量％を均一に混合し、４０番手の紡績糸を得た。この紡績糸２本を合撚して双糸とし、綾組織にて製織を行った。得られた織布の物性を表１に示す。
[Example 7]
50% by mass of polyarylate fiber (“Vectran (registered trademark)” manufactured by Kuraray Co., Ltd.) as heat resistant fiber and 50% by mass of flame retardant rayon (manufactured by Lenzing Co.) as carbonized flame retardant fiber are uniformly mixed. A spun yarn was obtained. The two spun yarns were twisted into a double yarn and woven in a twill structure. The physical properties of the resulting woven fabric are shown in Table 1.
［実施例８］
耐熱性繊維としてフェノール繊維（日本カイノール社製「カイノール」）５０質量％、炭化性難燃繊維として難燃レーヨン（レンチング社製）５０質量％を均一に混合し、４０番手の紡績糸を得た。この紡績糸２本を合撚して双糸とし、綾組織にて製織を行った。得られた織布の物性を表１に示す。
[Example 8]
50% by mass of phenol fiber (“Kinol” manufactured by Nippon Kainol Co., Ltd.) as heat resistant fiber and 50% by mass of flame retardant rayon (manufactured by Lenzing Co.) as carbonized flame retardant fiber were uniformly mixed to obtain 40th spun yarn. . The two spun yarns were twisted into a double yarn and woven in a twill structure. The physical properties of the resulting woven fabric are shown in Table 1.
［比較例１］
耐熱性繊維としてパラ系アラミド繊維（デュポン社製「ケブラー（登録商標）」）４０質量％、メタ系アラミド繊維（デュポン社製「ノーメックス（登録商標）」）３０質量％、炭化性難燃繊維として難燃ビニロン（株式会社クラレ製「バイナール」）３０質量％を均一に混合し、４０番手の紡績糸を得た。この紡績糸２本を合撚して双糸とし、綾組織にて製織を行った。得られた織布の物性を表１に示す。
[Comparative Example 1]
40% by mass of para-aramid fiber ("Kevlar (registered trademark)" manufactured by DuPont) as a heat-resistant fiber, 30% by mass of meta-aramid fiber ("Nomex (registered trademark)" manufactured by DuPont), as carbonized flame-retardant fiber Flame retardant vinylon (Kuraray Co., Ltd. “Vinard”) 30% by mass was uniformly mixed to obtain 40th spun yarn. The two spun yarns were twisted into a double yarn and woven in a twill structure. The physical properties of the resulting woven fabric are shown in Table 1.
［比較例２］
耐熱性繊維としてパラ系アラミド繊維（デュポン社製「ケブラー（登録商標）」）２０質量％、メタ系アラミド繊維（デュポン社製「ノーメックス（登録商標）」）１０質量％、炭化性難燃繊維として難燃ビニロン（株式会社クラレ製「バイナール」）７０質量％を均一に混合し、４０番手の紡績糸を得た。この紡績糸２本を合撚して双糸とし、綾組織にて製織を行った。得られた織布の物性を表１に示す。
[Comparative Example 2]
As a heat-resistant fiber, 20% by mass of para-aramid fiber ("Kevlar (registered trademark)" manufactured by DuPont), 10% by mass of meta-aramid fiber ("Nomex (registered trademark)" manufactured by DuPont), as carbonized flame-retardant fiber Flame retardant vinylon (Kuraray Co., Ltd. “Vinard”) 70% by mass was uniformly mixed to obtain 40th spun yarn. The two spun yarns were twisted into a double yarn and woven in a twill structure. The physical properties of the resulting woven fabric are shown in Table 1.
［比較例３］
耐熱性繊維としてパラ系アラミド繊維（デュポン社製「ケブラー（登録商標）」）３０質量％、メタ系アラミド繊維（デュポン社製「ノーメックス（登録商標）」）２０質量％、綿５０質量％を均一に混合し、４０番手の紡績糸を得た。この紡績糸２本を合撚して双糸とし、綾組織にて製織を行った。得られた織布の物性を表１に示す。
[Comparative Example 3]
30% by mass of para-aramid fiber ("Kevlar (registered trademark)" manufactured by DuPont), 20% by mass of meta-aramid fiber ("Nomex (registered trademark)" manufactured by DuPont) and 50% by mass of cotton as heat-resistant fibers To obtain a 40th spun yarn. The two spun yarns were twisted into a double yarn and woven in a twill structure. The physical properties of the resulting woven fabric are shown in Table 1.
［比較例４］
耐熱性繊維としてパラ系アラミド繊維（デュポン社製「ケブラー（登録商標）」）３０質量％、メタ系アラミド繊維（デュポン社製「ノーメックス（登録商標）」）２０質量％、炭化性難燃繊維としてポリアリレート繊維（株式会社クラレ製「ベクトラン（登録商標）」）５０質量％を均一に混合し、４０番手の紡績糸を得た。この紡績糸２本を合撚して双糸とし、綾組織にて製織を行った。得られた織布の物性を表１に示す。
[Comparative Example 4]
30% by mass of para-aramid fiber ("Kevlar (registered trademark)" manufactured by DuPont) as a heat-resistant fiber, 20% by mass of meta-aramid fiber ("Nomex (registered trademark)" manufactured by DuPont), as carbonized flame-retardant fiber 50% by mass of polyarylate fiber (“Vectran (registered trademark)” manufactured by Kuraray Co., Ltd.) was uniformly mixed to obtain a 40th spun yarn. The two spun yarns were twisted into a double yarn and woven in a twill structure. The physical properties of the resulting woven fabric are shown in Table 1.
表１に示すとおり、耐熱性繊維／炭化性難燃繊維の比率、織布の目付け、通気性が本発明の構成を満足する実施例１〜８の織布は難燃性能、防炎性能とも防炎作業服用途として適する条件を満たしている。一方、耐熱性繊維の比率が６５より大きい織布である比較例１は難燃性能は優れているが、重量減少率が３５％未満であるため、炭化性難燃繊維の炭化が十分に進行せず、したがって防炎性能（ΔＴ）が劣るものであった。また耐熱性繊維の比率が３５より小さい織布である比較例２は難燃性能は優れているが、重量減少率が４５％より高いため織布の強度低下が著しく、織布が破損してしまうため防炎性能（ΔＴ）が劣るものであった。さらに炭化性難燃繊維でない綿を用いた比較例３の織布は、難燃性、防炎性とも劣っていた。また比較例３と同様に炭化性難燃繊維でないポリアリレート繊維を用いた比較例４の織布においても、重量減少率が３５％未満であるため、炭化性難燃繊維の炭化が十分に進行せず、したがって防炎性能（ΔＴ）が劣るものであった。 As shown in Table 1, the woven fabrics of Examples 1 to 8 in which the ratio of the heat resistant fiber / carbonized flame retardant fiber, the fabric weight of the woven fabric, and the air permeability satisfy the configuration of the present invention are both flame retardant performance and flame proof performance. Satisfies conditions suitable for flameproof work clothes. On the other hand, Comparative Example 1, which is a woven fabric having a heat-resistant fiber ratio of greater than 65, has excellent flame retardancy, but the weight reduction rate is less than 35%, so that carbonization of the carbonized flame-retardant fiber is sufficiently advanced. Therefore, the flameproof performance (ΔT) was inferior. Moreover, although the comparative example 2 which is a woven fabric in which the ratio of heat-resistant fiber is smaller than 35 is excellent in flame retardancy, since the weight reduction rate is higher than 45%, the strength of the woven fabric is significantly reduced, and the woven fabric is damaged. Therefore, the flameproof performance (ΔT) was inferior. Furthermore, the woven fabric of Comparative Example 3 using cotton that is not carbonized flame retardant fiber was inferior in both flame retardancy and flame resistance. Further, in the woven fabric of Comparative Example 4 using polyarylate fibers that are not carbonized flame retardant fibers as in Comparative Example 3, the weight reduction rate is less than 35%, so that carbonization of the carbonized flame retardant fibers sufficiently proceeds. Therefore, the flameproof performance (ΔT) was inferior.
本発明の織布および該織布からなる作業服は軽量でかつ通気性が高く、高温作業等における安全服として連続着用しても作業者に対する負担が少ない。したがって本発明の織布および該織布からなる作業服は、溶鉱炉などの炉前服や焼却炉などの作業服をはじめ、自衛隊服、軍服などの高温や火炎などの被爆の可能性のある作業服として有用である。 The woven fabric of the present invention and the work clothes made of the woven cloth are lightweight and highly breathable, and even if worn continuously as safety clothes in high-temperature work or the like, the burden on the operator is small. Therefore, the woven fabric of the present invention and the work clothes made of the woven cloth include work clothes such as furnace clothes such as blast furnaces and work clothes such as incinerators, work that may be exposed to high temperatures and flames such as SDF clothes and military clothes. Useful as clothes.
Claims (3)
（１）構成する繊維が耐熱性繊維および炭化性難燃繊維からなり、その重量比率が６５：３５〜３５：６５である紡績糸であること、
（２）目付けが２４０ｇ／ｍ２以下であること、
（３）通気度が１５ｃｍ３／ｃｍ２／ｓ以上であること、
（４）限界酸素指数（ＬＯＩ）が２８以上であること、
（５）空気中４００℃×３０分熱処理における重量減少率が３５〜４５％であること。 A flameproof woven fabric satisfying all of the following (1) to (5) and comprising a single layer.
(1) The constituent fiber is composed of a heat-resistant fiber and a carbonized flame-retardant fiber, and the spun yarn has a weight ratio of 65:35 to 35:65.
(2) The basis weight is 240 g / m 2 or less,
(3) The air permeability is 15 cm 3 / cm 2 / s or more,
(4) The limiting oxygen index (LOI) is 28 or more,
(5) The weight reduction rate in heat treatment at 400 ° C. for 30 minutes in air is 35 to 45%.
Work clothes comprising the flameproof woven fabric according to claim 1 or 2.
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| WO2010122836A1 (en) | 2009-04-24 | 2010-10-28 | 日本毛織株式会社 | Fireproof fabric and fireproof clothing including same |
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| WO2011087125A1 (en) * | 2010-01-18 | 2011-07-21 | 帝人テクノプロダクツ株式会社 | Laminated fabric for protective clothing and protective clothing using same |
| JP2012036511A (en) * | 2010-08-04 | 2012-02-23 | Kuraray Co Ltd | Flame-retardant fabric and protective clothing using the same |
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