JPH08134716A - Filament yarn for air bag - Google Patents
Filament yarn for air bagInfo
- Publication number
- JPH08134716A JPH08134716A JP27085794A JP27085794A JPH08134716A JP H08134716 A JPH08134716 A JP H08134716A JP 27085794 A JP27085794 A JP 27085794A JP 27085794 A JP27085794 A JP 27085794A JP H08134716 A JPH08134716 A JP H08134716A
- Authority
- JP
- Japan
- Prior art keywords
- yarn
- single fiber
- fineness
- birefringence
- fiber
- 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.)
- Granted
Links
Landscapes
- Air Bags (AREA)
- Artificial Filaments (AREA)
- Multicomponent Fibers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、機械的特性と柔軟性に
優れたエアバッグ基布を得ることできる、エアバッグ用
糸条に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn for an airbag capable of obtaining an airbag base fabric having excellent mechanical properties and flexibility.
【０００２】[0002]
【従来の技術】自動車の安全装置として用いられるエア
バッグは、現在、ナイロン６６を用いた合成繊維織物に
ゴム類を被覆した基布により形成されたものが主流であ
る。2. Description of the Related Art At present, air bags used as a safety device for automobiles are mainly made of a base fabric obtained by coating a synthetic fiber woven fabric using nylon 66 with rubbers.
【０００３】エアバッグは衝撃吸収性とともに、通常、
非常に小さな場所に収納するために、柔軟性にも優れて
いることが要求される。[0003] Airbags, together with shock absorption, usually
It also needs to be flexible so that it can be stored in a very small space.
【０００４】しかしながら、この合成繊維織物にゴム類
を被覆した基布は、ゴム類の被覆によって、耐熱性や気
密性を向上させることはできるが、基布が硬くなるた
め、収納性が悪いという問題がある。However, the base fabric obtained by coating the synthetic fiber woven fabric with rubber can improve heat resistance and airtightness by coating with rubber, but the base fabric becomes hard, so that the storage property is poor. There's a problem.
【０００５】この問題を解決し、製造コストを下げる目
的で、最近では、ゴムを被覆しないノンコートタイプの
エアバッグの開発が進められており、素材もナイロン６
６より安価で耐熱性のよいポリエステルを使用すること
が検討されている。In order to solve this problem and reduce the manufacturing cost, recently, a non-coated type airbag not covered with rubber has been developed, and the material is nylon 6
It is considered to use polyester which is cheaper than No. 6 and has good heat resistance.
【０００６】しかしながら、ポリエステルはナイロン６
６と比較して弾性率が高いため、製織して基布にする
と、柔軟性に欠けるという欠点があり、特に、気密性を
上げるために高密度に織ると、コンパクトに収納するこ
とがより困難になるという問題が生じる。However, polyester is nylon 6
Since it has a higher elastic modulus than that of 6, when it is woven into a base fabric, it has a drawback that it lacks in flexibility. Especially, when it is woven at a high density to improve airtightness, it is more difficult to store it compactly. The problem arises that
【０００７】特開平3-167312号公報には、エアバッグ用
ポリエステル繊維として、タフネス、結節強度の向上し
た繊維が提案されており、この繊維より得られるエアバ
ッグ基布は、耐衝撃性や耐久性に優れ、基布の平坦性も
改善されたものである。Japanese Patent Laid-Open No. 3-167312 proposes a fiber having improved toughness and knot strength as a polyester fiber for an air bag, and an air bag base fabric obtained from this fiber has impact resistance and durability. The flatness of the base fabric is improved.
【０００８】しかしながら、この繊維より得られる基布
は、柔軟性が十分でなく、特に気密性を上げるために高
密度に織ると、収納性に劣るものとなるという欠点があ
った。However, the base fabric obtained from this fiber has a drawback that it is not sufficiently flexible, and if it is woven at a high density in order to increase the airtightness, the storage property becomes poor.
【０００９】このように、強度や耐久性を保持したうえ
でポリエステル糸条に柔軟性を付与することは容易では
なく、強度や耐久性に優れると同時に柔軟なエアバッグ
基布を得ることのできるポリエステル糸条は未だ開発さ
れていない。As described above, it is not easy to impart flexibility to the polyester yarn while maintaining strength and durability, and it is possible to obtain a flexible airbag base fabric while being excellent in strength and durability. Polyester yarn has not been developed yet.
【００１０】[0010]
【発明が解決しようとする課題】本発明は、上記のよう
な問題点を解決し、エアバッグ基布として必要な機械的
特性と柔軟性を同時に有する基布を得ることのできるエ
アバッグ用糸条を提供することを技術的な課題とするも
のである。DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems and is capable of obtaining a base cloth having the mechanical properties and flexibility required for an air bag base cloth at the same time. Providing articles is a technical issue.
【００１１】[0011]
【課題を解決する手段】本発明者らは、上記の課題を解
決するために鋭意検討した結果、繊維断面の内層部分と
表層部分とが配向差を有し、表層部分の配向度を内層部
分の配向度より低い繊維とし、曲げ方向の剛性を小さく
すれば、高強度でありながら曲げに対して柔らかい柔軟
性を持つ糸条が得られることを見出し、本発明に到達し
た。Means for Solving the Problems As a result of intensive studies to solve the above problems, the inventors have found that the inner layer portion and the surface layer portion of the fiber cross section have a difference in orientation, and the degree of orientation of the surface layer portion is the inner layer portion. The inventors have found that a fiber having a higher degree of strength and softness against bending can be obtained by using a fiber having a degree of orientation lower than that of (1) and reducing the rigidity in the bending direction, and has reached the present invention.
【００１２】すなわち、本発明は、固有粘度が0.8 以上
のポリエチレンテレフタレートより構成され、単糸繊度
が１〜2.5 ｄ、総繊度が200 〜500 ｄ、引張強度が８ｇ
／ｄ以上、破断伸度が15％以上で、単糸断面の複屈折率
分布が（１）式を満たし、曲げ剛性が（２）式の範囲に
あることを特徴とするエアバッグ用糸条。That is, the present invention comprises polyethylene terephthalate having an intrinsic viscosity of 0.8 or more, a single yarn fineness of 1 to 2.5 d, a total fineness of 200 to 500 d, and a tensile strength of 8 g.
/ D or more, the elongation at break is 15% or more, the birefringence distribution of the cross section of the single yarn satisfies the formula (1), and the bending rigidity is within the range of the formula (2). .
【００１３】 （１） △ｎｃ−△ｎｓ≧0.015 、 △ｎｃ≧0.170 △ｎｃ：単糸の中心から半径方向に70％までの部分の複
屈折率の平均値 △ｎｓ：単糸の表面から半径方向に30％までの部分の複
屈折率の平均値 （２） Ｂ≦ 6.0×10-6×ＴＤ Ｂ ：曲げ剛性（ｇ・cm2 ／糸条） ＴＤ：総繊度（ｄ） 以下、本発明について詳細に説明する。(1) Δnc-Δns ≧ 0.015, Δnc ≧ 0.170 Δnc: Average value of birefringence of 70% in the radial direction from the center of the single yarn Δns: Radius from the surface of the single yarn Average value of birefringence up to 30% in the direction (2) B ≦ 6.0 × 10 −6 × TD B: Flexural rigidity (g · cm 2 / thread) TD: Total fineness (d) Will be described in detail.
【００１４】本発明における糸条は、ポリエチレンテレ
フタレート（ＰＥＴ）よりなるものであるが、ポリエス
テル本来の性質を損なわない程度において、ＰＥＴに耐
熱剤、難燃剤、艶消剤等の第３成分が混合されていても
よい。The yarn in the present invention is made of polyethylene terephthalate (PET). However, PET is mixed with a third component such as a heat-resistant agent, a flame retardant and a matting agent to the extent that the original properties of polyester are not impaired. It may have been done.
【００１５】また、ＰＥＴの固有粘度を0.8 以上とする
必要がある。ここで、固有粘度は、フェノールとテトラ
クロロエタンの等重量混合溶剤を用い、20℃で測定した
ものである。固有粘度が0.8 未満であると、強度や耐久
性が劣った糸条となり、好ましくない。Further, the intrinsic viscosity of PET needs to be 0.8 or more. Here, the intrinsic viscosity is measured at 20 ° C. by using an equal weight mixed solvent of phenol and tetrachloroethane. When the intrinsic viscosity is less than 0.8, the yarn is inferior in strength and durability, which is not preferable.
【００１６】また、固有粘度の上限は特に限定されるも
のではないが、操業性よく紡糸するためには、固有粘度
の範囲を0.8 〜1.1 とすることが好ましい。The upper limit of the intrinsic viscosity is not particularly limited, but it is preferable to set the intrinsic viscosity in the range of 0.8 to 1.1 in order to spin with good operability.
【００１７】本発明における繊維は、繊維断面の内層部
分と表層部分とが配向差を有しており、表層部分の配向
を内層部分の配向より低くし、繊維の曲げ方向の剛性を
小さくすることによって、高強度でありながら柔軟性を
有するものとなるのであり、具体的には、繊維を半径方
向に７／３の比率で分けて測定した複屈折率が、（１）
式を満たすことが必要である。The fiber in the present invention has an orientation difference between the inner layer portion and the surface layer portion of the fiber cross section, and the orientation of the surface layer portion is made lower than the orientation of the inner layer portion to reduce the rigidity in the bending direction of the fiber. By virtue of the fact that it has high strength but flexibility, specifically, the birefringence index measured by dividing the fiber in the radial direction at a ratio of 7/3 is (1)
It is necessary to satisfy the formula.
【００１８】（１）式を満足する複屈折率分布を有する
ことによって、繊維を曲げたとき内側の圧縮に要するエ
ネルギーが小さく、曲げ剛性が小さくなり、さらに、繊
維の内層部分は高度に配向しているため、繊維軸方向に
高い強度を維持することもできる。By having a birefringence distribution satisfying the expression (1), when the fiber is bent, the energy required for the inner compression is small, the bending rigidity is small, and the inner layer portion of the fiber is highly oriented. Therefore, high strength can be maintained in the fiber axis direction.
【００１９】単糸繊度については、１〜2.5 ｄとするこ
とが必要である。単糸繊度が2.5 ｄより大きいと、繊維
の曲げ剛性が大きくなり、得られる布帛が柔軟なものと
ならず、一方、１ｄより小さいと強度に劣り、また、
（１）式を満たす分布を付与することが困難となる。The single yarn fineness must be 1 to 2.5 d. If the single yarn fineness is larger than 2.5 d, the bending rigidity of the fiber becomes large, and the obtained cloth does not become flexible. On the other hand, if it is smaller than 1 d, the strength becomes poor.
It becomes difficult to give a distribution that satisfies the formula (1).
【００２０】総繊度は200 〜500 ｄの範囲とする必要が
ある。総繊度が500 ｄより大きいと、高密度に織る場
合、柔軟性に欠けた基布となり、200 ｄより小さいと、
引裂強力の弱い基布となる。The total fineness should be in the range of 200 to 500 d. If the total fineness is larger than 500 d, the base fabric lacks flexibility when weaving at high density, and if it is smaller than 200 d,
The base fabric has a weak tearing strength.
【００２１】糸条の曲げ剛性は、単糸繊度とフィラメン
ト数により値が変わるが、本発明では、製編織した布帛
に十分な柔軟性を付与するために、（２）式を満足させ
る必要がある。The flexural rigidity of the yarn varies depending on the fineness of the single yarn and the number of filaments, but in the present invention, it is necessary to satisfy the formula (2) in order to impart sufficient flexibility to the woven and knitted fabric. is there.
【００２２】さらに、引張強度は８ｇ／ｄ以上、破断伸
度は15％以上とすることが必要である。引張強度が８ｇ
／ｄより小さいと、引裂強力の弱い基布となり、破断伸
度が15％より小さいと、エアバッグ作動時の衝撃に耐え
る耐衝撃性を有した基布とすることができない。Further, it is necessary that the tensile strength is 8 g / d or more and the breaking elongation is 15% or more. Tensile strength is 8g
If it is less than / d, the base fabric has a weak tear strength, and if the breaking elongation is less than 15%, the base fabric cannot have impact resistance to withstand the impact when the airbag is operated.
【００２３】次に、本発明の糸条の製法例について説明
する。Next, an example of a method for producing the yarn of the present invention will be described.
【００２４】一般に、単一成分のポリマーを通常の溶融
紡糸法で紡糸する場合、冷却速度の差により、表層部分
の配向が内層部分より促進される傾向にあるが、本発明
における繊維は、表層部分の配向を、内層部分の配向よ
り低くする必要がある。Generally, when a single-component polymer is spun by an ordinary melt spinning method, the orientation of the surface layer portion tends to be promoted from the inner layer portion due to the difference in cooling rate. The orientation of the portion needs to be lower than the orientation of the inner layer portion.
【００２５】したがって、本発明ではポリマーが吐出さ
れる時点で内外層に溶融粘度差を生じさせることによ
り、前記のような配向差を与える。すなわち、表層部分
と内層部分とに供給されるポリマーをそれぞれ独立した
押出機により温度制御し、芯鞘型の紡糸口金により両成
分を接合吐出させることにより、溶融粘度差を生じさせ
る。Therefore, in the present invention, a difference in melt viscosity is generated in the inner and outer layers at the time when the polymer is discharged, so that the above orientation difference is provided. That is, the temperatures of the polymers supplied to the surface layer portion and the inner layer portion are controlled by independent extruders, respectively, and both components are bonded and discharged by a core-sheath type spinneret to generate a difference in melt viscosity.
【００２６】まず、押出機の温度を、表層側を305 〜31
5 ℃、内層側を290 〜300 ℃とし、吐出温度を295 〜30
5 ℃の範囲とし、ポリマーの供給比率を、重量比で表層
／内層を３／７〜５／５として紡糸する。First, the temperature of the extruder is 305 to 31 on the surface side.
5 ℃, 290 ~ 300 ℃ on the inner layer side, discharge temperature 295 ~ 30
The spinning temperature is set to 5 ° C., and the polymer is supplied at a weight ratio of 3/7 to 5/5 for the surface layer / inner layer.
【００２７】次に、紡出した糸条は、溶融粘度差を保つ
ために吐出温度より高い350 〜450℃の温度の加熱ゾー
ンを通過させた後、冷却固化させる。加熱ゾーンを通過
させた後、糸条の外側から中心に向かって冷却風を吹き
付けて冷却し、固化直後に油剤を付与して集束する。Next, the spun yarn is passed through a heating zone at a temperature of 350 to 450 ° C. which is higher than the discharge temperature in order to keep the difference in melt viscosity, and then cooled and solidified. After passing through the heating zone, cooling air is blown from the outside of the yarn toward the center to cool the yarn, and immediately after solidification, an oil agent is applied to focus the yarn.
【００２８】集束した糸条を引き取った後、延伸を施し
て、引張強度が８ｇ／ｄ以上の糸条を得るが、延伸工程
は、生産性をよくするため、紡糸に引き続き連続して行
うことが好ましく、引取速度を400 〜600 ｍ／分の範囲
とし、延伸時に繊維表層にかかる応力を低減できるよう
に、温度が200 ℃以上の加熱水蒸気を吹き付けたり、ヒ
ートプレート等を使用して加熱しながら、延伸倍率4.5
〜5.5 倍で延伸する。また、延伸した後、５％以内の弛
緩処理を施し、巻き取る。After drawing the bundled yarn, it is drawn to obtain a yarn having a tensile strength of 8 g / d or more. The drawing process should be continuously performed after spinning in order to improve productivity. The take-up speed is preferably in the range of 400 to 600 m / min, and heated steam at a temperature of 200 ° C or higher is sprayed or heated using a heat plate or the like so that the stress applied to the fiber surface layer during stretching can be reduced. While the draw ratio is 4.5
Stretch by ~ 5.5 times. In addition, after stretching, a relaxation treatment of 5% or less is performed, and the film is wound.
【００２９】この時、延伸を多段に分けて行ったり、弛
緩率を大きくすると、繊維の表層と内層の配向差が小さ
くなり、好ましくない。At this time, if the stretching is performed in multiple stages or the relaxation rate is increased, the orientation difference between the surface layer and the inner layer of the fiber becomes small, which is not preferable.
【００３０】[0030]
【実施例】次に、本発明を実施例により具体的に説明す
る。なお、本発明における特性値の測定法は次のとおり
である。EXAMPLES Next, the present invention will be specifically described by way of examples. In addition, the measuring method of the characteristic value in this invention is as follows.
【００３１】(a) 強伸度 島津製作所製オートグラフＳ−100 を用い、試料長25ｃ
ｍ、引っ張り速度30ｃｍ／分の条件で測定した。(A) Strength and elongation Using an autograph S-100 manufactured by Shimadzu Corporation, sample length 25c
m, and the pulling speed was 30 cm / min.
【００３２】(b) 複屈折率 干渉顕微鏡により、繊維の断面を半径方向に10等分した
部分を各々測定し、表層側の３カ所と内層側の７カ所の
各々の平均値を算出した。(B) Birefringence index: Using an interference microscope, the portions of the fiber cross section divided into 10 equal parts in the radial direction were each measured, and the average value of each of the three positions on the surface layer side and the seven positions on the inner layer side was calculated.
【００３３】(c) 曲げ剛性 カトーテック社製純曲げ試験機ＫＥＳ−ＦＢ２を用いて
測定した。(C) Bending rigidity Measurement was performed using a pure bending tester KES-FB2 manufactured by Kato Tech.
【００３４】(d) 柔軟性 ＪＩＳ Ｌ-1096 ６.19.１Ａ法（45°カンチレバー法）
で測定した。(D) Flexibility JIS L-1096 6.19.1A method (45 ° cantilever method)
It was measured at.
【００３５】なお、エアバッグ用の基布として十分な柔
軟性は、60mm以下である。The flexibility sufficient as a base fabric for an airbag is 60 mm or less.
【００３６】実施例１〜２、比較例１〜３ 固有粘度が0.9 のＰＥＴチップをエクストルーダーを２
機備えた複合溶融紡糸機にそれぞれ供給し、表１に示す
フィラメント数となる、芯鞘型紡糸口金から紡出した。
その際、表層側と内層側の供給比率を重量比で４／６と
し、表層側のエクストルーダーの制御温度を315 ℃、内
層側のエクストルーダーの制御温度を300 ℃、吐出温度
を305 ℃とした。Examples 1 and 2 and Comparative Examples 1 to 3 PET chips having an intrinsic viscosity of 0.9 were installed in an extruder.
Each of them was supplied to a composite melt spinning machine equipped with a machine, and spun from a core-sheath type spinneret having the number of filaments shown in Table 1.
At that time, the supply ratio between the surface layer side and the inner layer side was set to 4/6 by weight, the control temperature of the extruder on the surface layer side was 315 ° C, the control temperature of the extruder on the inner layer side was 300 ° C, and the discharge temperature was 305 ° C. did.
【００３７】紡出した糸条を、雰囲気温度が400 ℃に保
たれた長さ10ｃｍの加熱筒を通過させた後に、円筒型の
冷却風吹付装置により、温度20℃、速度30ｍ／分の冷却
風を吹付けて冷却固化し、油剤を付与した後、速度が48
0 ｍ／分の引取ローラで引き取った。After passing the spun yarn through a heating cylinder having a length of 10 cm whose atmospheric temperature was kept at 400 ° C., it was cooled at a temperature of 20 ° C. at a speed of 30 m / min by a cylindrical cooling air blowing device. After blowing air to cool and solidify and apply oil, the speed is 48
It was taken up by a take-up roller of 0 m / min.
【００３８】引き続いて、表面温度が220 ℃の延伸ロー
ラに送り、引取ローラと延伸ローラとの間で糸条に400
℃の加熱水蒸気を吹き付け、延伸倍率5.2 倍（比較例３
は5.6 倍) で延伸を行い、表面温度が160 ℃の弛緩ロー
ラにより３％の弛緩熱処理を施し、巻取機で巻き取っ
た。Subsequently, the yarn is sent to a drawing roller having a surface temperature of 220 ° C., and a yarn is drawn between the take-up roller and the drawing roller.
Spraying heated steam at ℃, draw ratio 5.2 times (Comparative Example 3
5.6 times), a relaxation roller having a surface temperature of 160 ° C. was subjected to a relaxation heat treatment of 3%, and the film was wound by a winder.
【００３９】得られた糸条の単糸繊度、引張強度、破断
伸度、複屈折率、曲げ剛性の値を表１に示す。Table 1 shows the values of single yarn fineness, tensile strength, elongation at break, birefringence and bending rigidity of the obtained yarn.
【００４０】実施例１、２で得られた糸条は、いずれも
曲げ剛性が小さく、強度、伸度ともにエアバッグ用糸条
として十分な値であった。一方、比較例１で得られた糸
条は単糸繊度が大きいため、曲げ剛性が大きく、比較例
２で得られた糸条は単糸繊度が小さいため、強度が不足
し、比較例３で得られた糸条は過剰に延伸したため、伸
度が小さく、表層と内層との配向差も小さく、曲げ剛性
も大きかった。Each of the yarns obtained in Examples 1 and 2 had a small bending rigidity, and both the strength and the elongation were values sufficient as a yarn for an airbag. On the other hand, since the yarn obtained in Comparative Example 1 has a large single yarn fineness, the bending rigidity is large, and the yarn obtained in Comparative Example 2 has a small single yarn fineness, so that the strength is insufficient. Since the obtained yarn was excessively drawn, the elongation was small, the difference in orientation between the surface layer and the inner layer was small, and the bending rigidity was large.
【００４１】比較例４ 固有粘度が0.9 のＰＥＴチップを単一のエクストルーダ
ーを備えた溶融紡糸機に供給し、エクストルーダーの制
御温度を310 ℃、吐出温度を305 ℃とした以外は、実施
例１と同様の方法で、紡糸延伸を行った。COMPARATIVE EXAMPLE 4 Example 4 was repeated except that PET chips having an intrinsic viscosity of 0.9 were supplied to a melt spinning machine equipped with a single extruder, and the extruder was controlled at a temperature of 310 ° C. and the discharge temperature was 305 ° C. Spin-drawing was performed in the same manner as in 1.
【００４２】得られた糸条の単糸繊度、引張強度、破断
伸度、複屈折率、曲げ剛性の値を表１に示す。Table 1 shows the single yarn fineness, tensile strength, elongation at break, birefringence, and bending rigidity of the obtained yarn.
【００４３】比較例４で得られた糸条は、繊維の表層の
配向が内層より高いものであったため、曲げ剛性が大き
いものであった。The yarn obtained in Comparative Example 4 had a high bending rigidity because the orientation of the surface layer of the fiber was higher than that of the inner layer.
【００４４】[0044]
【表１】 [Table 1]
【００４５】実施例３、比較例５ 実施例１及び比較例４の糸条を用いて、経、緯密度とも
に60本／2.54cmの平組織の織物を製織し、柔軟性を測定
した。Example 3, Comparative Example 5 Using the yarns of Example 1 and Comparative Example 4, a woven fabric having a flat design having both warp and weft densities of 60 / 2.54 cm was woven and the flexibility was measured.
【００４６】得られた織物の柔軟性の測定値を表２に示
す。Table 2 shows the measured values of the flexibility of the obtained woven fabric.
【００４７】[0047]
【表２】 [Table 2]
【００４８】実施例３で得られた織物は、柔軟性に優れ
るものであったが、比較例５で得られた織物は、柔軟性
に劣り、エアバッグ用基布としての収納性が不十分なも
のであった。The woven fabric obtained in Example 3 was excellent in flexibility, but the woven fabric obtained in Comparative Example 5 was inferior in flexibility and was insufficient in storability as a base fabric for an airbag. It was something.
【００４９】[0049]
【発明の効果】本発明のエアバッグ用糸条は、製編織す
れば、エアバッグ基布として必要な強度や伸度の機械特
性を有し、かつ柔軟性も有する布帛とすることが可能と
なる。EFFECTS OF THE INVENTION The yarn for an airbag of the present invention can be made into a fabric having the mechanical properties of strength and elongation required for an airbag base fabric and flexibility, if it is woven or knitted. Become.
【００５０】[0050]
Claims (1)
フタレートより構成され、単糸繊度が１〜2.5 ｄ、総繊
度が200 〜500 ｄ、引張強度が８ｇ／ｄ以上、破断伸度
が15％以上で、単糸断面の複屈折率分布が（１）式を満
たし、曲げ剛性が（２）式の範囲にあることを特徴とす
るエアバッグ用糸条。 （１） △ｎｃ−△ｎｓ≧0.015 、 △ｎｃ≧0.170 △ｎｃ：単糸の中心から半径方向に70％までの部分の複
屈折率の平均値 △ｎｓ：単糸の表面から半径方向に30％までの部分の複
屈折率の平均値 （２） Ｂ≦ 6.0×10-6×ＴＤ Ｂ ：曲げ剛性（ｇ・cm2 ／糸条） ＴＤ：総繊度（ｄ）1. A polyethylene terephthalate having an intrinsic viscosity of 0.8 or more, a single yarn fineness of 1 to 2.5 d, a total fineness of 200 to 500 d, a tensile strength of 8 g / d or more, and a breaking elongation of 15% or more. A yarn for airbag having a birefringence distribution of a single yarn cross section satisfying the expression (1) and a bending rigidity in the range of the expression (2). (1) Δnc-Δns ≧ 0.015, Δnc ≧ 0.170 Δnc: Average birefringence of 70% in the radial direction from the center of the single yarn Δns: 30 in the radial direction from the surface of the single yarn % Of average birefringence up to% (2) B ≦ 6.0 × 10 −6 × TD B: Flexural rigidity (g · cm 2 / thread) TD: Total fineness (d)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27085794A JP3459478B2 (en) | 1994-11-04 | 1994-11-04 | Thread for airbag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27085794A JP3459478B2 (en) | 1994-11-04 | 1994-11-04 | Thread for airbag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08134716A true JPH08134716A (en) | 1996-05-28 |
| JP3459478B2 JP3459478B2 (en) | 2003-10-20 |
Family
ID=17491947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27085794A Expired - Fee Related JP3459478B2 (en) | 1994-11-04 | 1994-11-04 | Thread for airbag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3459478B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7014914B2 (en) | 2004-01-09 | 2006-03-21 | Milliken & Company | Polyester yarn and airbags employing certain polyester yarn |
| KR20120000931A (en) * | 2010-06-28 | 2012-01-04 | 코오롱인더스트리 주식회사 | Polyester fiber for airbag and preparation method thereof |
| JP2013528719A (en) * | 2010-06-24 | 2013-07-11 | ヒョスン コーポレーション | Airbag fabric using polyethylene terephthalate fiber with excellent heat resistance |
| WO2019059560A1 (en) * | 2017-09-22 | 2019-03-28 | 코오롱인더스트리 주식회사 | High-strength polyethylene terephthalate fiber and manufacturing method therefor |
| CN112004725A (en) * | 2018-03-30 | 2020-11-27 | 世联株式会社 | Base fabric for airbag and airbag |
-
1994
- 1994-11-04 JP JP27085794A patent/JP3459478B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7014914B2 (en) | 2004-01-09 | 2006-03-21 | Milliken & Company | Polyester yarn and airbags employing certain polyester yarn |
| JP2013528719A (en) * | 2010-06-24 | 2013-07-11 | ヒョスン コーポレーション | Airbag fabric using polyethylene terephthalate fiber with excellent heat resistance |
| KR20120000931A (en) * | 2010-06-28 | 2012-01-04 | 코오롱인더스트리 주식회사 | Polyester fiber for airbag and preparation method thereof |
| WO2019059560A1 (en) * | 2017-09-22 | 2019-03-28 | 코오롱인더스트리 주식회사 | High-strength polyethylene terephthalate fiber and manufacturing method therefor |
| CN111148866A (en) * | 2017-09-22 | 2020-05-12 | 可隆工业株式会社 | High-strength polyethylene terephthalate yarn and method for producing same |
| CN112004725A (en) * | 2018-03-30 | 2020-11-27 | 世联株式会社 | Base fabric for airbag and airbag |
| EP3760493A4 (en) * | 2018-03-30 | 2021-12-08 | Seiren Co., Ltd. | Airbag base fabric and airbag |
| US11560115B2 (en) | 2018-03-30 | 2023-01-24 | Seiren Co., Ltd. | Airbag base fabric and airbag |
| CN112004725B (en) * | 2018-03-30 | 2023-09-12 | 世联株式会社 | Base fabric for airbag and airbag |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3459478B2 (en) | 2003-10-20 |
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