JP2003129362A - Flame-resistant staple fiber nonwoven fabric and method for producing the same - Google Patents
Flame-resistant staple fiber nonwoven fabric and method for producing the sameInfo
- Publication number
- JP2003129362A JP2003129362A JP2001324786A JP2001324786A JP2003129362A JP 2003129362 A JP2003129362 A JP 2003129362A JP 2001324786 A JP2001324786 A JP 2001324786A JP 2001324786 A JP2001324786 A JP 2001324786A JP 2003129362 A JP2003129362 A JP 2003129362A
- Authority
- JP
- Japan
- Prior art keywords
- flame
- short fibers
- resistant
- nonwoven fabric
- retardant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 93
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title abstract description 8
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003063 flame retardant Substances 0.000 claims abstract description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 11
- 239000001301 oxygen Substances 0.000 claims abstract description 11
- 238000011282 treatment Methods 0.000 claims abstract description 9
- 238000005299 abrasion Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 11
- 230000000704 physical effect Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000004744 fabric Substances 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 239000004760 aramid Substances 0.000 description 4
- 229920003235 aromatic polyamide Polymers 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 238000009841 combustion method Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229920000784 Nomex Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- FJQXCDYVZAHXNS-UHFFFAOYSA-N methadone hydrochloride Chemical compound Cl.C=1C=CC=CC=1C(CC(C)N(C)C)(C(=O)CC)C1=CC=CC=C1 FJQXCDYVZAHXNS-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004763 nomex Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- -1 polymetaphenylene isophthalamide Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920006259 thermoplastic polyimide Polymers 0.000 description 1
Landscapes
- Nonwoven Fabrics (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は耐炎性短繊維不織布
及びその製造方法に関するものであり、さらに詳しく
は、断熱材、防炎布や消火布などに好適に使用できる、
耐炎性に優れた不織布およびその製造方法に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flame resistant short fiber non-woven fabric and a method for producing the same, more specifically, it can be suitably used for a heat insulating material, a flameproof cloth, a fire extinguishing cloth, and the like.
The present invention relates to a non-woven fabric having excellent flame resistance and a method for producing the same.
【０００２】[0002]
【従来の技術】耐炎性繊維からなる布帛やシート状物
は、耐炎性と断熱性を有するため、防炎布、消火布など
の用途に主として用いられている。2. Description of the Related Art Fabrics and sheet materials made of flame resistant fibers have flame resistance and heat insulation properties, and are therefore mainly used for flameproof cloths, fire fighting cloths and the like.
【０００３】さらに、最近では、自動車、鉄道車両、航
空機、空調機、建材、さらにはシートクッションの被覆
材等の用途に好適な、軽量で且つ耐炎性に優れた薄物の
耐炎性繊維不織布が望まれている。Furthermore, recently, there has been a demand for a thin flame-resistant fibrous nonwoven fabric which is suitable for use in automobiles, railway vehicles, aircrafts, air conditioners, building materials, and also as a covering material for seat cushions and which is lightweight and excellent in flame resistance. It is rare.
【０００４】例えば、特開平９−１１９０５２号公報に
は、耐炎性繊維のウエブに柱状流処理を行い、該耐炎性
繊維を互いに絡ませた不織布の製造方法が開示されてい
る。しかしながら、該方法では、耐炎性繊維自身の強度
が低いため不織布強度が低く、また表面が磨耗された場
合に繊維の脱落が起こり、耐炎性が低下する等の問題が
あった。For example, Japanese Unexamined Patent Publication No. 9-119052 discloses a method for producing a nonwoven fabric in which a flame-resistant fiber web is subjected to a columnar flow treatment and the flame-resistant fibers are entangled with each other. However, this method has a problem that the strength of the non-woven fabric is low because the strength of the flame resistant fiber itself is low, and the fibers fall off when the surface is abraded, which lowers the flame resistance.
【０００５】また、国際公開第９４／０３３９３号パン
フレット及び特開平１０−２８３号公報には、難燃性短
繊維及び／または不燃性耐熱短繊維と、熱接着性弾性複
合短繊維とが分散・混合された繊維集合体が開示されて
いる。しかしながら、該繊維集合体は、熱接着性弾性複
合短繊維を含むため、鉄道車両用非金属材料の燃焼性を
評価するためのアルコール燃焼法においては、低い防炎
性しか示さないという問題があった。In WO 94/03393 and JP-A 10-283, flame-retardant short fibers and / or non-combustible heat-resistant short fibers and heat-adhesive elastic composite short fibers are dispersed. A mixed fiber assembly is disclosed. However, since the fiber assembly contains the heat-adhesive elastic composite short fibers, there is a problem in that the alcohol combustion method for evaluating the flammability of a non-metallic material for railway vehicles shows low flameproofness. It was
【０００６】一方、特開２００１−３２１５９号公報に
は、耐炎性短繊維ウエブにポリビニルアルコールを付与
する方法が開示されているが、生産性が低い上、ケミカ
ルコストが増大するという問題があった。On the other hand, Japanese Unexamined Patent Publication No. 2001-32159 discloses a method of applying polyvinyl alcohol to a flame resistant short fiber web, but there is a problem that productivity is low and chemical cost increases. .
【０００７】さらに、特開２００１−１４０１４４号公
報には、耐炎繊維からなる織物が開示されているが、剛
性の高い織物であるため３次元形状への成型が難しいと
いう問題があり、これまで低目付けで、均一性、耐磨耗
性、強度に優れ、かつ充分な耐炎性を有する布帛やシー
ト状物は得られていないのが実情である。Further, Japanese Patent Laid-Open No. 2001-140144 discloses a woven fabric made of flame resistant fiber, but since it is a woven fabric having high rigidity, it has a problem that it is difficult to mold it into a three-dimensional shape. The fact is that a fabric or sheet-like material having a unit weight which is excellent in uniformity, abrasion resistance, strength, and sufficient flame resistance has not been obtained.
【０００８】[0008]
【発明が解決しようとする課題】本発明の目的は、上記
従来技術の有する問題点を解消し、低目付けでありなが
ら優れた耐炎性、均一性、耐磨耗性を有し、且つ高強度
の耐炎性繊維不織布およびその製造方法を提供すること
にある。SUMMARY OF THE INVENTION The object of the present invention is to solve the above-mentioned problems of the prior art and to have excellent flame resistance, uniformity, abrasion resistance, and high strength while having a low basis weight. Another object of the present invention is to provide a flame resistant fiber non-woven fabric and a method for producing the same.
【０００９】[0009]
【課題を解決するための手段】本発明者らは上記目的を
達成するために鋭意検討した結果、限界酸素指数が４５
以上の耐炎性繊維と難燃繊維とを柱状流処理を行って絡
み合せるとき、所望の不織布が得られることを究明し
た。Means for Solving the Problems As a result of intensive studies for achieving the above object, the present inventors have found that the limiting oxygen index is 45.
It was clarified that a desired non-woven fabric can be obtained when the flame resistant fiber and the flame retardant fiber are entangled by performing columnar flow treatment.
【００１０】かくして本発明によれば、限界酸素指数が
４５以上の耐炎性短繊維と難燃性短繊維とが互いに分散
・混合された繊維集合体からなる不織布であって、該耐
炎性短繊維と該難燃性短繊維との重量比が６０／４０〜
９５／５であり、且つ該不織布の目付が５０〜２５０ｇ
／ｍ2、単位重量当りの強度が３０〜８０ｇ／ｇである
ことを特徴とする耐炎性短繊維不織布、及び限界酸素指
数が４５以上の耐炎性短繊維と難燃性短繊維とをその重
量比が６０／４０〜９５／５となるように混合してウエ
ブを形成し、該ウエブに柱状流処理を行って耐炎性短繊
維と難燃性短繊維とを絡み合せることを特徴とする耐炎
性短繊維不織布の製造方法が提供される。Thus, according to the present invention, a non-woven fabric comprising a fiber aggregate in which flame-resistant short fibers having a limiting oxygen index of 45 or more and flame-retardant short fibers are dispersed and mixed with each other, the flame-resistant short fibers And the weight ratio of the flame-retardant short fibers is 60 / 40-
95/5, and the basis weight of the nonwoven fabric is 50 to 250 g.
/ M 2 , the strength per unit weight is 30 to 80 g / g, and a flame-resistant short fiber nonwoven fabric having a limiting oxygen index of 45 or more and a flame-retardant short fiber are used. A flame resistance characterized by mixing to give a ratio of 60/40 to 95/5 to form a web, and subjecting the web to columnar flow treatment to entangle the flame-resistant short fibers and flame-retardant short fibers. Provided is a method for producing a non-woven short fiber fabric.
【００１１】[0011]
【発明の実施の形態】本発明で使用する耐炎性短繊維は
その限界酸素指数が４５以上であることが必要である。
ここで、限界酸素指数（ＬＯＩ）とは、ＪＩＳ Ｋ ７
２０１の方法に準じて、下記の測定方法にて求められる
値であり、繊維が燃焼を維持するために必要な最低限の
酸素体積パーセントをあらわす。具体的には、測定すべ
き繊維約１ｇを直径約０．３mmの針金を支持体としてま
きつけて、直径約７ｍｍのひも状とし、経１５０ｍｍの
枠に固定した状態で燃焼円筒内に配置する。次いでその
中に酸素と窒素の混合ガスを１１．４リットル／ｍｍで
約３０秒間流した後、試験片の上端に点火し、試験片が
３分以上燃え続けるか又は着火後の燃焼長さが５０ｍｍ
以上となるのに必要な最低の酸素流量とそのときの窒素
流量とを測定し、下記式より算出する。BEST MODE FOR CARRYING OUT THE INVENTION The flame resistant short fibers used in the present invention must have a limiting oxygen index of 45 or more.
Here, the limiting oxygen index (LOI) is JIS K 7
It is a value determined by the following measuring method according to the method of 201, and represents the minimum oxygen volume percentage necessary for the fiber to maintain combustion. Specifically, about 1 g of the fiber to be measured is sprinkled with a wire having a diameter of about 0.3 mm as a support to form a string having a diameter of about 7 mm, and the fiber is fixed in a frame of 150 mm in length and placed in the combustion cylinder. Then, a mixed gas of oxygen and nitrogen was flown therein at a rate of 11.4 liter / mm for about 30 seconds, and then the upper end of the test piece was ignited, and the test piece continued to burn for 3 minutes or longer, or the combustion length after ignition was increased. 50 mm
The minimum oxygen flow rate required for the above and the nitrogen flow rate at that time are measured and calculated from the following formula.
【００１２】[0012]
【数１】 [Equation 1]
【００１３】尚、試験片に点火した瞬間、試験片表面の
毛羽を火が走る場合は再点火して上記測定を行なう。When the fluff on the surface of the test piece is ignited at the moment when the test piece is ignited, the above measurement is carried out by reigniting.
【００１４】上記耐炎性短繊維としては、ポリアクリロ
ニトリル系繊維をプレオキシダイズドしたプレオキシダ
イズド短繊維（例えば、商品名「ラスタン」および「パ
イロメックス」）などが好ましく例示される。Preferred examples of the flame resistant short fibers include preoxydized short fibers obtained by preoxydizing polyacrylonitrile fibers (for example, trade names "Rastane" and "Pyromex").
【００１５】また、本発明で使用する難燃性短繊維とし
ては、全芳香族ポリアミド（メタ系及びパラ系）短繊
維、更には、ポリエーテルエーテルケトン（ＰＥＥＫ）
短繊維、熱可塑性ポリイミド短繊維等のエンジニアリン
グプラスチックを繊維化した高性能短繊維等を挙げるこ
とが出来る。The flame-retardant short fibers used in the present invention include wholly aromatic polyamide (meta-based and para-based) short fibers, and further polyetheretherketone (PEEK).
Examples include high-performance short fibers obtained by converting engineering plastics such as short fibers and thermoplastic polyimide short fibers into fibers.
【００１６】中でも、単に、難燃性、耐熱性のみなら
ず、強力、モジュラス等の力学的特性、あるいは捲縮付
与性及び捲縮堅牢性等の総合的特性に優れた全芳香族ポ
リアミド短繊維、中でもメタ系全芳香族ポリアミド短繊
維がよい。メタ系芳香族ポリアミド繊維とは、基本構造
がポリメタフェニレンイソフタルアミド重合体からなる
ものを言い、具体的にはコーネックス、ノーメックス、
アピエール、ケルメル等の商標名の繊維として知られて
いる。これらの短繊維は２種以上を併用してもよい。Among them, wholly aromatic polyamide short fibers are excellent not only in flame retardancy and heat resistance but also in mechanical properties such as strength and modulus, or overall properties such as crimp imparting property and crimp fastness. Among them, meta-type wholly aromatic polyamide short fibers are preferable. The meta-aromatic polyamide fiber, the basic structure refers to those consisting of a polymetaphenylene isophthalamide polymer, specifically, Conex, Nomex,
Known as fibers under the trade names of Apierre, Kermer, etc. Two or more kinds of these short fibers may be used in combination.
【００１７】上記耐炎性短繊維と難燃性短繊維とを混合
する際の重量比は、６０／４０〜９５／５であることが
必要であり。好ましくは、７０／３０〜９０／１０であ
る。耐炎性短繊維の比率が６０未満の場合は耐炎性がお
とり、一方、該比率が９５を越える場合は、ウエブ製造
工程においてカードアクッションで耐炎性短繊維が切断
され、均一なフリースが作成できないと同時に生産性が
著しく低下する。さらに、得られる不織布の強力が低く
なる上、耐磨耗性も不十分となる。When the flame-resistant short fibers and the flame-retardant short fibers are mixed, the weight ratio must be 60/40 to 95/5. It is preferably 70/30 to 90/10. When the ratio of the flame-resistant short fibers is less than 60, the flame resistance is deteriorated, while when the ratio exceeds 95, the flame-resistant short fibers are cut by the card cushion in the web manufacturing process, and a uniform fleece cannot be produced. At the same time, productivity is significantly reduced. Furthermore, the strength of the obtained non-woven fabric becomes low and the abrasion resistance becomes insufficient.
【００１８】本発明の不織布を得るには、先ず上記耐炎
性短繊維と難燃性短繊維とをその重量比が６０／４０〜
９５／５となるように混合してウエブを形成する。ウエ
ブの形成はカード、エアレイド、抄紙等の方法を採用す
れば良い。In order to obtain the nonwoven fabric of the present invention, first, the weight ratio of the flame-resistant short fibers and the flame-retardant short fibers is 60/40.
The web is formed by mixing so as to be 95/5. The web may be formed by a method such as card, air-laid, papermaking, or the like.
【００１９】次に、本発明においては、上記ウエブに対
し、高圧水、高圧空気などの柱状の流体流を噴射し、繊
維を交絡させることが必要である。該交絡をニードルパ
ンチング等の方法で行うと、特に耐炎性短繊維の切断に
よる繊維の脱落が発生し、ウエブの締まりが弱くなり、
従って機械強度も弱くなる。また、ニードルパンチング
を行うと、針穴が大きいので、針穴周辺のファイヤーブ
ロッキング性の低下が起こる。Next, in the present invention, it is necessary to jet a columnar fluid flow such as high-pressure water or high-pressure air onto the web to entangle the fibers. When the entanglement is carried out by a method such as needle punching, the fibers come off due to the cutting of the flame-resistant short fibers, the tightness of the web becomes weak,
Therefore, the mechanical strength also becomes weak. Further, when needle punching is performed, since the needle hole is large, the fire blocking property around the needle hole deteriorates.
【００２０】上記の柱状流処理は、例えば、不織布の幅
方向に配列したノズル孔よりウエブに向けて柱状水流を
噴射することによって行う。高圧水の水圧は通常、２０
〜２００ｋｇ／ｃｍ2、ノズルの直径は通常０．０５〜
０．２０ｍｍである。The above columnar flow treatment is carried out, for example, by injecting a columnar water stream toward the web from nozzle holes arranged in the width direction of the nonwoven fabric. The pressure of high pressure water is usually 20
~ 200 kg / cm 2 , the diameter of the nozzle is usually 0.05 ~
It is 0.20 mm.
【００２１】これら柱状流処理の条件は、必要とする不
織布の物性に応じて適宜設定すればよい。また、ウエブ
の表面および裏面両方向より水柱状流を噴射すれば、表
裏面均一な不織布を得ることができる。なお、柱状流の
噴射は、不織布の厚み方向へ繊維を押しつけるため、不
織布の繊維密度が向上する。また繊維の交絡は、繊維が
水圧で押さえられるため大きく移動することなく、繊維
の両端部が主に他繊維と交絡するので、より均一な不織
布となる。The conditions for these columnar flow treatments may be appropriately set according to the required physical properties of the nonwoven fabric. Further, by injecting a water columnar flow from both the front and back directions of the web, a nonwoven fabric with uniform front and back surfaces can be obtained. The injection of the columnar flow pushes the fibers in the thickness direction of the nonwoven fabric, so that the fiber density of the nonwoven fabric is improved. Further, the entanglement of fibers does not move greatly because the fibers are pressed by water pressure, and both ends of the fibers are entangled mainly with other fibers, so that a more uniform nonwoven fabric is obtained.
【００２２】かくして得られた不織布は、その目付けが
５０〜２５０ｇ／ｍ2、単位重量当りの強度が３０〜８
０ｇ／ｇであることが必要であり、好ましくは３５〜８
０ｇ／ｇである。The non-woven fabric thus obtained has a basis weight of 50 to 250 g / m 2 and a strength per unit weight of 30 to 8
It is necessary to be 0 g / g, preferably 35 to 8
It is 0 g / g.
【００２３】目付け及び単位重量当りの強力が上記範囲
を満足するものは、軽量で、且つ耐磨耗性に優れたもの
であり、防炎布として使用した場合、繊維切断がなく磨
耗に対する外観の変化も少ない。つまり、上記不織布
は、他の繊維構造体やウレタンフォームと複合されて、
車、鉄道車輌、建材等の用途へ使用される場合が多く、
その過程でいろいろな物と接触する機会が多いので、耐
磨耗性が必要となるのである。もし、この耐磨耗性が低
いと繊維の脱落が容易に起こり、耐炎性が低下する。Those having a basis weight and a strength per unit weight satisfying the above ranges are light in weight and excellent in abrasion resistance, and when used as a flameproof cloth, there is no fiber cut and the appearance against abrasion is not observed. Little change. That is, the non-woven fabric is compounded with other fibrous structure or urethane foam,
Often used for cars, railway vehicles, building materials, etc.,
Since there are many opportunities to come into contact with various objects in the process, abrasion resistance is required. If this abrasion resistance is low, the fibers easily fall off and the flame resistance decreases.
【００２４】他の繊維構造体やウレタンフォームと複合
する際には、合成樹脂等の接着剤、熱接着シート等を利
用した接合方法が採用できる。また、成型金型等を使用
した３次元形状物の表皮として使用することも可能であ
る。When compounding with another fiber structure or urethane foam, a joining method using an adhesive such as a synthetic resin or a heat-adhesive sheet can be adopted. It is also possible to use it as a skin of a three-dimensional object using a molding die or the like.
【００２５】[0025]
【実施例】以下実施例により本発明をさらに具体的に説
明する。なお、実施例中の物性は下記の方法により評価
した。The present invention will be described in more detail with reference to the following examples. The physical properties in the examples were evaluated by the following methods.
【００２６】（１）厚み ＪＩＳ−Ｌ−１０９６に準じて測定した。(1) Thickness It was measured according to JIS-L-1096.
【００２７】（２）目付け ＪＩＳ−Ｌ−１０９６に準じて測定した。(2) Unit weight It was measured according to JIS-L-1096.
【００２８】（３）強力 ＪＩＳ−Ｌ−１０９６に準じて測定した。(3) Strong It was measured according to JIS-L-1096.
【００２９】（４）単位重量あたりの強力
経及び緯方向の強力を合計した値を、５ｃｍ×１０ｃｍ
角の試料の重量で除して算出した。(4) The total value of the strength per unit weight and the strength in the weft direction is 5 cm × 10 cm.
It was calculated by dividing by the weight of the corner sample.
【００３０】（５）耐炎性
鉄道車輌用材料（非金属）の燃焼性規格のアルコール燃
焼法により評価した。区分は不燃性、極難燃性、難燃性
の３段階である。(5) Flame resistance It was evaluated by the alcohol combustion method of the flammability standard of materials for railway vehicles (non-metal). There are three categories: non-combustible, extremely flame-retardant, and flame-retardant.
【００３１】（６）耐磨耗性
ＪＩＳ−Ｌ−１０９６ Ｅ法（マーチンデール）に準
じ、押圧荷重９ｋＰａで、２００回磨耗した後の短繊維
の脱落状況を目視で確認して、〇：繊維がほとんど脱落
しない、△：繊維がやや脱落する、×：繊維がかなり脱
落する、の３段階で評価した。(6) Abrasion resistance According to JIS-L-1096 E method (Martindale), the dropping condition of short fibers after 200 times abrasion with a pressing load of 9 kPa was visually confirmed, and ◯: fiber Was almost completely removed, Δ: the fiber was slightly removed, X: The fiber was considerably removed, and the evaluation was made in 3 stages.
【００３２】［実施例１］ＬＯＩが４８の耐炎性短繊維
（商品名：パイロメックス、２．２ｄｔｅｘ、カット長
５１ｍｍ）と、難燃性短繊維（商品名：コーネックス、
２．２ｄｔｅｘ、カット長５１ｍｍ）とを、７０／３０
の重量比で混合し、カードを通過させてウエブを作成し
た。この際、カード通過性には特に問題はなかった。[Example 1] Flame-resistant short fibers having LOI of 48 (trade name: Pyromex, 2.2 dtex, cut length 51 mm), and flame-retardant short fibers (trade name: Conex,
2.2 dtex, cut length 51 mm) and 70/30
Were mixed in a weight ratio of, and passed through a card to prepare a web. At this time, there was no particular problem with card passing.
【００３３】得られたウエブをクロスレイヤーを使用し
て折り重ねた後、５０ｋｇ／ｃｍ2（ゲージ圧）の高圧
水を用い、直径０．１５ｍｍ、ピッチ０．４ｍｍのノズ
ル群でウオータージェットの柱状流処理を表、裏それぞ
れ２回行ない、繊維を交絡させた。さらに乾燥処理を行
い、耐炎性短繊維不織布を得た。得られた不織布の物性
を表１に示す。The web thus obtained was folded using a cross layer, and then high pressure water of 50 kg / cm 2 (gauge pressure) was used to form a water jet column with a nozzle group having a diameter of 0.15 mm and a pitch of 0.4 mm. Flow treatment was performed twice on the front and back sides to entangle the fibers. Further, a drying treatment was performed to obtain a flame resistant short fiber non-woven fabric. Table 1 shows the physical properties of the obtained non-woven fabric.
【００３４】［実施例２］実施例１において、耐炎性短
繊維と、難燃性短繊維との混合比率を８５／１５に変更
した以外は実施例１と同様に実施した。得られた不織布
の物性を表１に示す。Example 2 Example 1 was repeated except that the mixing ratio of the flame resistant short fibers and the flame retardant short fibers was changed to 85/15. Table 1 shows the physical properties of the obtained non-woven fabric.
【００３５】［比較例１］実施例１において、折り重ね
たウエブに、３バーブ、４０番の針を使用して３００ポ
イント／ｃｍ2のニードルパンチを施して繊維同士を交
絡させ、不織布を得た。得られた不織布の物性を表１に
示す。[Comparative Example 1] In Example 1, the folded web was subjected to a needle punch of 300 points / cm 2 using a 3 barb, # 40 needle to entangle the fibers to obtain a nonwoven fabric. It was Table 1 shows the physical properties of the obtained non-woven fabric.
【００３６】［比較例２］実施例１において、耐炎性短
繊維であるパイロメックスのみを使用した以外は実施例
１と同様に実施した。得られたウエブには斑状の穴が見
られ、かつ、作業後、カード下を確認したところ落綿が
かなりあった。得られた不織布の物性を表１に示す。[Comparative Example 2] The procedure of Example 1 was repeated, except that only Pyromex, which is a flame-resistant short fiber, was used. The obtained web had spotted holes, and after the work, when the underside of the card was confirmed, there was considerable cotton drop. Table 1 shows the physical properties of the obtained non-woven fabric.
【００３７】［比較例３］実施例１において、難燃性短
繊維であるコーネックスのみを使用した以外は実施例１
と同様に実施した。得られた不織布の物性を表１に示
す。Comparative Example 3 Example 1 is the same as Example 1 except that only Conex which is a flame-retardant short fiber is used.
It carried out similarly to. Table 1 shows the physical properties of the obtained non-woven fabric.
【００３８】[0038]
【表１】 [Table 1]
Claims (2)
と難燃性短繊維とが互いに分散・混合された繊維集合体
からなる不織布であって、該耐炎性短繊維と該難燃性短
繊維との重量比が６０／４０〜９５／５であり、且つ該
不織布の目付が５０〜２５０ｇ／ｍ2、単位重量当りの
強度が３０〜８０ｇ／ｇであることを特徴とする耐炎性
短繊維不織布。1. A non-woven fabric comprising a fiber aggregate in which flame-resistant short fibers having a limiting oxygen index of 45 or more and flame-retardant short fibers are dispersed and mixed with each other, and the flame-resistant short fibers and the flame-retardant property. Flame resistance, characterized in that the weight ratio to the short fibers is 60/40 to 95/5, the basis weight of the nonwoven fabric is 50 to 250 g / m 2 , and the strength per unit weight is 30 to 80 g / g. Short fiber non-woven fabric.
と難燃性短繊維とをその重量比が６０／４０〜９５／５
となるように混合してウエブを形成し、該ウエブに柱状
流処理を行って耐炎性短繊維と難燃性短繊維とを絡み合
せることを特徴とする耐炎性短繊維不織布の製造方法。2. A weight ratio of flame-resistant short fibers having a limiting oxygen index of 45 or more and flame-retardant short fibers of 60/40 to 95/5.
To form a web, and subject the web to a columnar flow treatment to entangle the flame-resistant short fibers and the flame-retardant short fibers with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001324786A JP2003129362A (en) | 2001-10-23 | 2001-10-23 | Flame-resistant staple fiber nonwoven fabric and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001324786A JP2003129362A (en) | 2001-10-23 | 2001-10-23 | Flame-resistant staple fiber nonwoven fabric and method for producing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003129362A true JP2003129362A (en) | 2003-05-08 |
Family
ID=19141458
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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Cited By (6)
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| JP2010503776A (en) * | 2006-09-13 | 2010-02-04 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | Bag filter containing meta-aramid fiber and acrylic fiber |
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2001
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| JP2007536439A (en) * | 2004-05-07 | 2007-12-13 | ミリケン・アンド・カンパニー | Heat and flame shield |
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