JPH09143816A - Shock absorbing polyester fiber - Google Patents
Shock absorbing polyester fiberInfo
- Publication number
- JPH09143816A JPH09143816A JP30275795A JP30275795A JPH09143816A JP H09143816 A JPH09143816 A JP H09143816A JP 30275795 A JP30275795 A JP 30275795A JP 30275795 A JP30275795 A JP 30275795A JP H09143816 A JPH09143816 A JP H09143816A
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- Prior art keywords
- strength
- elongation
- fiber
- polyester
- polyester 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.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高強度で且つ衝撃
吸収性に優れ、特に建設工事や電気工事など高所作業を
行う場合に使用される安全ベルト、安全ネット、あるい
は自動車用のシートベルト等に適したポリエステル繊維
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety belt, a safety net, or a seat belt for an automobile, which has high strength and is excellent in shock absorption, and which is used particularly when performing aerial work such as construction work and electric work. For example, the present invention relates to a polyester fiber.
【０００２】[0002]
【従来の技術】本来、高所作業用の安全ベルト、安全ネ
ット、あるいは自動車用のシートベルトに要求される最
大の特性は、落下時あるいは衝突時に作業者や乗員が受
ける衝撃力を吸収緩和すること、すなわち衝撃吸収時に
発生する衝撃力を低下させることである。かかる性能を
満足させるために、現在までにいくつかの提案がなされ
ている。2. Description of the Related Art Originally, the greatest characteristic required for safety belts for safety work at high places, safety nets, or seat belts for automobiles is to absorb and relax the impact force received by a worker or an occupant at the time of a drop or a collision. That is, to reduce the impact force generated during impact absorption. Several proposals have been made to date in order to satisfy such performance.
【０００３】例えば、特開平１−２９８２０９号公報に
は、固有粘度の高いポリエステルをランド長／孔径比の
大きい吐出孔から高温雰囲気中に吐出し、冷却固化後に
３０００ｍ／分以上の高速で引取って、得られるポリエ
ステル繊維の荷伸曲線の第１次降伏点と立上がり点との
間を５％以上３０％未満となし、衝撃エネルギーを連続
的に且つ円滑に吸収することができるようにしたポリエ
ステル繊維の製造方法が提案されている。しかし、この
方法により得られる繊維はその破断強度が不充分で、例
えば安全ベルトとして用いる場合には、その要求される
破断強力１８３０Ｋｇ以上を満足させるために繊維の使
用量を多くせざるを得なくなり、取扱い性が低下するだ
けでなく落下防止時の最大衝撃荷重も逆に高くなるとい
った安全上の問題が発生することが判明した。For example, in Japanese Unexamined Patent Publication No. 1-298209, polyester having a high intrinsic viscosity is discharged from a discharge hole having a large land length / pore diameter ratio into a high temperature atmosphere, and after solidification by cooling, it is collected at a high speed of 3000 m / min or more. And the impact yield energy of the obtained polyester fiber is set to be 5% or more and less than 30% between the first yield point and the rising point of the polyester so that impact energy can be continuously and smoothly absorbed. Fiber manufacturing methods have been proposed. However, the fiber obtained by this method has an insufficient breaking strength. For example, when it is used as a safety belt, the amount of fiber used must be increased in order to satisfy the required breaking strength of 1830 kg or more. However, it has been found that not only the handling property is lowered, but also the maximum impact load at the time of fall prevention is increased, which causes a safety problem.
【０００４】一方、特開平５−３２１０６２号公報に
は、沸水収縮率が２５％以上、熱応力値が０．２ｇ／ｄ
以上の高収縮性ポリエステル繊維を、繊維ロープに加工
した後に熱収縮させて、衝撃エネルギーを有効に吸収さ
せることのできる安全ロープの製造方法が提案されてい
る。しかしこの方法では、熱収縮時に収縮斑が発生しや
すいため得られるロープの破断強力は低下し、また荷伸
曲線の立上がり点伸度も大きくなって衝撃エネルギー吸
収のための伸度が過大になりすぎるといった問題があ
る。On the other hand, in JP-A-5-321062, the boiling water shrinkage is 25% or more and the thermal stress value is 0.2 g / d.
There has been proposed a method for producing a safety rope which is capable of effectively absorbing impact energy by heat-shrinking the above-mentioned highly shrinkable polyester fiber into a fiber rope and then heat-shrinking the fiber rope. However, in this method, the breaking strength of the obtained rope is reduced because shrinkage unevenness is likely to occur during heat shrinkage, and the elongation at the rising point of the load elongation curve also becomes large and the elongation for impact energy absorption becomes excessive. There is a problem such as too much.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、上記の事情
に鑑みなされたもので、その目的は、落下時あるいは衝
突時の衝撃エネルギーを吸収する際に発生する衝撃荷重
により受けるダメージを低減することができ、しかも破
断強度は良好で安全ベルト、安全ネット、シートベルト
等を得るに適した衝撃吸収性ポリエステル繊維を提供す
ることにある。The present invention has been made in view of the above circumstances, and an object thereof is to reduce damage received by an impact load generated when absorbing impact energy at the time of dropping or collision. Another object of the present invention is to provide a shock-absorbing polyester fiber which is suitable for obtaining safety belts, safety nets, seat belts and the like, and which has good breaking strength.
【０００６】[0006]
【課題を解決するための手段】本発明の上記目的は、以
下の構成により達成することができる。すなわち、「エ
チレンテレフタレートを主たる繰返し単位とするポリエ
ステルからなる繊維であって、下記（ａ）〜（ｅ）を同
時に満足することを特徴とする衝撃吸収性ポリエステル
繊維。」である。 （ａ）強度ＳＴ（ｇ／ｄ）：ＳＴ≧５．０ （ｂ）伸度ＥＬ（％）：２５≦ＥＬ≦５０ （ｃ）初期モジュラスＭ（ｇ／ｄ）：４０≦Ｍ≦９０ （ｄ）第一次降伏点強度ＳA （ｇ／ｄ）：０．７≦ＳA
≦１．２ （ｅ）１０％伸長強度ＳB （ｇ／ｄ）：１．０≦ＳB ≦
１．７The above object of the present invention can be achieved by the following constitutions. That is, it is "a fiber made of polyester having ethylene terephthalate as a main repeating unit, which simultaneously satisfies the following (a) to (e)". (A) Strength ST (g / d): ST ≧ 5.0 (b) Elongation EL (%): 25 ≦ EL ≦ 50 (c) Initial modulus M (g / d): 40 ≦ M ≦ 90 (d ) Primary yield strength S A (g / d): 0.7 ≦ S A
≦ 1.2 (e) 10% elongation strength S B (g / d): 1.0 ≦ S B ≦
1.7
【０００７】[0007]
【発明の実施の形態】本発明におけるポリエステルは、
エチレンテレフタレートを主たる繰返し単位とするポリ
エステルを対象とするが、なかでもポリエチレンテレフ
タレートに第３成分を、テレフタル酸成分を基準として
５〜１８モル％、特に１０〜１５モル％共重合したもの
は、容易に１０％伸長強度ＳB を１．０〜１．７ｇ／ｄ
の範囲にすることができるので好ましい。共重合させる
第３成分としては、イソフタル酸、アジピン酸等の二官
能性カルボン酸、ネオペンチルグリコール、ジエチレン
グリコール等のジオール成分を例示することができ、特
にイソフタル酸又はネオペンチルグリコールが好まし
い。BEST MODE FOR CARRYING OUT THE INVENTION The polyester in the present invention is
Polyesters containing ethylene terephthalate as the main repeating unit are targeted. Among them, polyethylene terephthalate with a third component copolymerized in a proportion of 5 to 18 mol%, particularly 10 to 15 mol% based on the terephthalic acid component is easily prepared. 10% elongation strength S B of 1.0 to 1.7 g / d
It is preferable because it can be within the range. Examples of the third component to be copolymerized include difunctional carboxylic acids such as isophthalic acid and adipic acid, and diol components such as neopentyl glycol and diethylene glycol, with isophthalic acid and neopentyl glycol being particularly preferred.
【０００８】またポリエステルの固有粘度は、低すぎる
と破断強力を達成することが困難となり、一方高すぎる
と溶融紡糸時に断糸が発生しやすくなるので、０．７〜
１．２、特に０．７５〜１．０の範囲が好ましい。If the intrinsic viscosity of the polyester is too low, it becomes difficult to achieve breaking strength, while if it is too high, yarn breakage tends to occur during melt spinning.
The range of 1.2, especially 0.75 to 1.0 is preferable.
【０００９】上記のポリエステルからなる本発明のポリ
エステル繊維は、その破断強度ＳＴ（ｇ／ｄ）、破断伸
度ＥＬ（％）、初期モジュラスＭ（ｇ／ｄ）、第１次降
伏点強度ＳA （ｇ／ｄ）、及び１０％伸長強度ＳB （ｇ
／ｄ）が下記（ａ）〜（ｅ）を同時に満足することが大
切である。 （ａ）ＳＴ≧５．０ （ｂ）２５≦ＥＬ≦５０ （ｃ）４０≦Ｍ≦９０ （ｄ）０．７≦ＳA ≦１．２ （ｅ）１．０≦ＳB ≦１．７The polyester fiber of the present invention made of the above polyester has a breaking strength ST (g / d), a breaking elongation EL (%), an initial modulus M (g / d), and a first yield strength S A. (G / d), and 10% elongation strength S B (g
It is important that / d) simultaneously satisfy the following (a) to (e). (A) ST ≧ 5.0 (b) 25 ≦ EL ≦ 50 (c) 40 ≦ M ≦ 90 (d) 0.7 ≦ S A ≦ 1.2 (e) 1.0 ≦ S B ≦ 1.7
【００１０】ここで破断強度ＳＴが５．０ｇ／ｄ未満の
場合には、安全ベルト、安全ネット、シートベルト等に
した時の破断強力を満足できるレベルにするためにはそ
の繊維の使用量を多くせざるを得なくなり、その結果衝
撃吸収時に発生する衝撃応力（衝撃荷重）は逆に大きく
なるので好ましくない。If the breaking strength ST is less than 5.0 g / d, the amount of the fiber used is set to a level that can satisfy the breaking strength when used as a safety belt, a safety net, a seat belt or the like. It is unavoidable that the amount must be increased and, as a result, the impact stress (impact load) generated at the time of impact absorption becomes large on the contrary.
【００１１】また破断伸度が２５％未満の場合には、１
０％伸長応力が１．７ｇ／ｄを越えることとなり、衝撃
荷重が大きくなるため好ましくない。一方、５０％を越
える場合には、破断強度のバラツキが大きくなって５．
０ｇ／ｄ以上のものを安定して得ることが困難となるの
で好ましくない。If the breaking elongation is less than 25%, 1
The 0% elongation stress exceeds 1.7 g / d, and the impact load increases, which is not preferable. On the other hand, when it exceeds 50%, the variation in breaking strength becomes large, and
It is not preferable because it is difficult to stably obtain the one having a value of 0 g / d or more.
【００１２】また初期モジュラスが４０ｇ／ｄ未満の場
合には、低応力でも繊維の伸長が起こりやすくなるた
め、安全ベルト等にした時の形態保持性が低下し、衝撃
エネルギー吸収性能も低下する。一方９０ｇ／ｄを越え
る場合には、第１次降伏点以降の荷伸曲線の立上がりを
抑えることが困難となり、１０％伸長応力が大きくなっ
て衝撃エネルギー吸収特性が低下する。Further, when the initial modulus is less than 40 g / d, the fibers are likely to be stretched even under a low stress, so that the shape retaining property when used as a safety belt or the like is lowered and the impact energy absorption performance is also lowered. On the other hand, when it exceeds 90 g / d, it becomes difficult to suppress the rise of the load elongation curve after the first yield point, and the 10% elongation stress becomes large and the impact energy absorption characteristics deteriorate.
【００１３】また第１次降伏点応力が０．７ｇ／ｄ未満
の場合には、低応力下で繊維の伸長が進行するために衝
撃エネルギー吸収性が低下するだけでなく、寸法安定性
も不充分となるので好ましくない。一方１．２ｇ／ｄを
越える場合には、衝撃エネルギー吸収能は大きくなるも
のの、衝撃荷重の最大値が大きくなって本発明の目的を
達成できなくなる。When the primary yield point stress is less than 0.7 g / d, not only the impact energy absorption is deteriorated due to the progress of fiber elongation under low stress, but also the dimensional stability is unsatisfactory. It is not preferable because it will be sufficient. On the other hand, if it exceeds 1.2 g / d, the impact energy absorption capacity increases, but the maximum value of the impact load increases and the object of the present invention cannot be achieved.
【００１４】さらに本発明においては、繊維の１０％伸
長応力が前記の範囲にあることが必要であり、この応力
が１．０ｇ／ｄ未満の場合には、衝撃を受けて伸長変形
する際の伸長応力が低くなって衝撃エネルギー吸収性能
が低下する。一方１．７ｇ／ｄを越える場合には、衝撃
エネルギーの吸収性は良好となるものの、伸長変形する
際の伸長応力が高くなりすぎて衝撃荷重は大きくなる。Further, in the present invention, it is necessary that the 10% elongation stress of the fiber is within the above range, and when this stress is less than 1.0 g / d, the fiber is stretched and deformed under impact. The tensile stress is lowered and the impact energy absorption performance is lowered. On the other hand, when it exceeds 1.7 g / d, the impact energy absorbability becomes good, but the extension stress during extension deformation becomes too high and the impact load becomes large.
【００１５】以上に述べた本発明のポリエステル繊維
は、例えば以下の方法により製造することができる。す
なわち、固有粘度が０．７以上のポリエステル、好まし
くは第３成分をテレフタル酸成分に対して５〜１８モル
％共重合したポリエチレンテレフタレート系共重合ポリ
エステルを、通常の溶融紡糸装置を用いて温度２６０〜
３１０℃下、延伸後の単糸繊度が１〜２０デニールとな
る割合で溶融吐出し、該吐出糸条をポリエステルの融点
以上の温度に保たれた加熱雰囲気中を通過させた後に冷
却風にて固化せしめ、次いで油剤を付与して未延伸糸を
得る。ここで未延伸糸の引取り速度は１５００ｍ／分以
下の速度が好ましく、これ以上にあっては、５．０ｇ／
ｄ以上の強度特性と他の諸特性を同時に満足する高強力
繊維を得ることは困難となる。The polyester fiber of the present invention described above can be produced, for example, by the following method. That is, a polyester having an intrinsic viscosity of 0.7 or more, preferably a polyethylene terephthalate-based copolyester obtained by copolymerizing the third component with respect to the terephthalic acid component in an amount of 5 to 18 mol% is used at a temperature of 260 using an ordinary melt spinning apparatus. ~
At 310 ° C., the single yarn fineness after drawing is melt-discharged at a ratio of 1 to 20 denier, and the discharged yarn is passed through a heating atmosphere kept at a temperature equal to or higher than the melting point of polyester, followed by cooling air. It is solidified and then an oil agent is applied to obtain an undrawn yarn. Here, the take-up speed of the undrawn yarn is preferably 1500 m / min or less, and above 5.0 m / min.
It is difficult to obtain a high-strength fiber that simultaneously satisfies the strength characteristics of d or more and other characteristics.
【００１６】得られた未延伸糸は、ポリエステルのガラ
ス転移点以上、好ましくは７５〜９５℃の温度で加熱
後、未延伸糸の引取り速度に応じた延伸倍率（ＤＲ１）
で２．５〜４．０倍に延伸した後、さらに１５０℃以
上、ポリエステルの結晶化温度−２０℃以下の温度、好
ましくは１６０〜１７０℃の非接触型加熱装置で第２段
延伸する。ここで第２段目の延伸倍率（ＤＲ２）は全延
伸倍率の２５〜４５％の範囲内とすることが大切で、２
５％未満の場合には、強度が５．０ｇ／ｄ以上の高強力
繊維を得ることが困難となり、一方４５％を越える場合
には、延伸時に断糸が発生しやすくなる。また第２段延
伸の加熱装置が接触型の場合には、延伸時に結晶化が起
りやすく、次ぎに施される弛緩収縮熱処理（リラックス
処理）が不充分となって伸度が低下しやすい。The obtained undrawn yarn is heated at a temperature not lower than the glass transition point of polyester, preferably 75 to 95 ° C., and then drawn at a draw ratio (DR1) according to the take-up speed of the undrawn yarn.
After being stretched to 2.5 to 4.0 times, the film is further stretched in the second stage with a non-contact heating device at a temperature of 150 ° C. or higher and a polyester crystallization temperature of −20 ° C. or lower, preferably 160 to 170 ° C. Here, it is important to set the draw ratio (DR2) of the second stage within the range of 25 to 45% of the total draw ratio.
If it is less than 5%, it becomes difficult to obtain a high-strength fiber having a strength of 5.0 g / d or more. On the other hand, if it exceeds 45%, yarn breakage tends to occur during drawing. When the heating device for the second stage drawing is a contact type, crystallization is likely to occur during drawing, and the relaxation shrinkage heat treatment (relaxation process) to be performed next becomes insufficient, and the elongation is likely to decrease.
【００１７】得られた延伸糸は、引続いて１８０〜２８
０℃の熱セットバス中を通過させながら２０〜３０％の
弛緩収縮熱処理を施す。この際、走行糸条の張力は０．
００５ｇ／ｄ以下となるようにすると共に、該糸条を熱
源体の表面上に接触させながら走行させること、及び糸
条の走行速度は５００ｍ／分以下にすることが、上記の
範囲で弛緩熱収縮させるためには好ましい。さらに熱源
体の糸条接触面を梨地にすると、糸条の走行安定性が向
上するので好ましい。The drawn yarn obtained is subsequently 180-28.
While passing through a heat set bath at 0 ° C., a relaxation shrinkage heat treatment of 20 to 30% is performed. At this time, the tension of the running yarn is 0.
The relaxation heat in the above range should be 005 g / d or less, and the yarn should be run while being in contact with the surface of the heat source body, and the running speed of the yarn should be 500 m / min or less. Preferred for shrinking. Further, it is preferable to make the yarn contact surface of the heat source body satin because the running stability of the yarn is improved.
【００１８】[0018]
【実施例】以下、実施例により本発明をさらに詳細に説
明する。なお、実施例中の各特性は、下記の方法にした
がって測定した。 ＜固有粘度＞フェノールとテトラクロルエタンとの等量
混合溶液中に繊維を溶解させ、温度３０℃で測定した粘
度から求めた。 ＜引張強伸度曲線＞ＪＩＳ Ｌ１０７０に準じ、糸長を
２０ｃｍとし、引張試験機にて３０ｃｍ／分の速度で引
張って求めた。 ＜衝撃荷重＞ＪＩＳ Ｌ２７０７−１９９２に規定され
た衝撃評価方法に準じ、７５Ｋｇの砂袋を測定製品試料
に固定して１．５ｍの高さから落下させたときにかかる
荷重の最大値を求めた。 ＜破断強力＞作成したベルト試料を、株式会社東京試験
機製作所製の引張試験機を用いて測定した。The present invention will be described in more detail with reference to the following examples. Each property in the examples was measured according to the following methods. <Intrinsic viscosity> Fiber was dissolved in an equal amount mixed solution of phenol and tetrachloroethane and the viscosity was measured at a temperature of 30 ° C. <Tensile Strength Elongation Curve> According to JIS L1070, the yarn length was set to 20 cm, and the tensile strength was measured by pulling at a speed of 30 cm / min with a tensile tester. <Impact load> According to the impact evaluation method defined in JIS L2707-1992, a maximum value of the load applied when a 75 kg sand bag was fixed to a measurement product sample and dropped from a height of 1.5 m was obtained. . <Breaking Strength> The prepared belt sample was measured using a tensile tester manufactured by Tokyo Test Machine Co., Ltd.
【００１９】［実施例１〜４、比較例１〜２］ポリエチ
レンテレフタレートにイソフタル酸（ＩＡ）又はネオペ
ンチルグリコール（ＮＰＧ）をテレフタル酸成分に対し
て表１記載の量共重合した、表１記載の固有粘度を有す
るポリエステルを２８０℃で溶融させた後、孔径が０．
５０ｍｍ、孔数が２５０ホールの紡糸口金から、得られ
る延伸糸の総デニール数が約１０００デニールとなる割
合で計量吐出した。吐出された糸条は、口金下に設けら
れた長さ３００ｍｍ、温度２７０℃の加熱雰囲気を通過
させた後、長さ３５０ｍｍにわたって冷却風を送風して
冷却固化させた。冷却固化した糸条はオイリングローラ
ーで油剤を付与した後、引取速度１０００ｍ／分にて一
旦未延伸糸パッケージとして巻き取った。Examples 1 to 4 and Comparative Examples 1 to 2 Polyethylene terephthalate was copolymerized with isophthalic acid (IA) or neopentyl glycol (NPG) in the amount shown in Table 1 with respect to the terephthalic acid component. After melting the polyester having an intrinsic viscosity of 280 ° C. at 280 ° C., the pore size is 0.
From a spinneret having a hole diameter of 50 mm and a hole number of 250 holes, the drawn yarn obtained was metered and discharged at a rate such that the total denier number was about 1000 denier. The discharged yarn was passed through a heating atmosphere having a length of 300 mm and a temperature of 270 ° C. provided below the spinneret, and then cooling air was blown over the length of 350 mm to be cooled and solidified. The cooled and solidified yarn was applied with an oiling roller by an oiling roller, and then temporarily wound as an undrawn yarn package at a take-up speed of 1000 m / min.
【００２０】得られた未延伸糸を、８５℃に加熱した供
給ローラーで予熱した後に第１段延伸（延伸倍率：ＤＲ
１）を行い、次いで表１記載の温度に加熱した非接触型
ヒーターを通過させながら第２段延伸（延伸倍率：ＤＲ
２）を行った後、表１記載の温度に加熱された熱セット
バス中を表１記載の収縮率で弛緩収縮熱処理し、３００
ｍ／分の速度で巻き取った。引張強伸度曲線（実施例
１）を図１に示す。The unstretched yarn obtained is preheated by a feeding roller heated to 85 ° C. and then first-stage stretched (stretching ratio: DR
1) and then the second stage stretching (stretching ratio: DR) while passing through a non-contact type heater heated to the temperature shown in Table 1.
After performing 2), the heat-shrink bath heated to the temperature shown in Table 1 was subjected to relaxation shrinkage heat treatment at the shrinkage ratio shown in Table 1, and 300
It was wound at a speed of m / min. The tensile strength / elongation curve (Example 1) is shown in FIG.
【００２１】得られた延伸糸３本を合糸し、Ｓ撚２００
回／ｍで撚糸し、これを経糸として表１記載の本数を使
用して、ベルト破断強力が２１５０Ｋｇ以上となるよう
に調整した。一方緯糸には強度が７．０ｇ／ｄ、伸度が
２０％のポリエステルマルチフィラメント糸（５００デ
ニール／７２フィラメント）を用い、緯糸織密度は１２
本／インチとしてベルト用織物を得た。得られた織物の
評価結果を表１に示す。なお、衝撃荷重は６００Ｋｇ以
下であれば良いと判断した。The three drawn yarns thus obtained are combined to form an S twist 200
Twisting was performed at a rate of 1 twist / m, and the number of yarns shown in Table 1 was used as the warp to adjust the belt breaking strength to 2150 kg or more. On the other hand, the weft is a polyester multifilament yarn (500 denier / 72 filaments) having a strength of 7.0 g / d and an elongation of 20%, and the weft density is 12
A woven fabric for a belt was obtained as a book / inch. Table 1 shows the evaluation results of the obtained woven fabric. The impact load was determined to be 600 Kg or less.
【００２２】[0022]
【表１】 [Table 1]
【００２３】[0023]
【発明の効果】本発明の衝撃吸収性ポリエステル繊維
は、第１次降伏点伸度以上の伸度では伸度が増加しても
それ程応力が大きくならないので、衝突エネルギーを吸
収させる際に負荷される衝撃荷重はそれ程大きくならな
い。また破断強度は５．０ｇ／ｄ以上と充分高強度であ
るため、衝撃エネルギー吸収時に繊維の破断が発生する
こともない。したがって、本発明の繊維は、落下を阻止
して作業者の安全を確保するための安全ベルトや安全ネ
ット、また自動車用のシートベルトに特に有用である。EFFECTS OF THE INVENTION The impact-absorbing polyester fiber of the present invention is not stressed so much even if the elongation is increased at the elongations higher than the primary yield point elongation, so that it is loaded when absorbing the collision energy. The impact load is not so large. In addition, the breaking strength is 5.0 g / d or more, which is sufficiently high, so that the fibers do not break when absorbing impact energy. Therefore, the fiber of the present invention is particularly useful for safety belts and safety nets for preventing falling and ensuring worker's safety, and seat belts for automobiles.
【図１】実施例１で得られた繊維の引張強伸度曲線。FIG. 1 is a tensile strength / elongation curve of the fiber obtained in Example 1.
Claims (2)
単位とするポリエステルからなる繊維であって、下記
（ａ）〜（ｅ）を同時に満足することを特徴とする衝撃
吸収性ポリエステル繊維。 （ａ）強度ＳＴ（ｇ／ｄ）：ＳＴ≧５．０ （ｂ）伸度ＥＬ（％）：２５≦ＥＬ≦５０ （ｃ）初期モジュラスＭ（ｇ／ｄ）：４０≦Ｍ≦９０ （ｄ）第一次降伏点強度ＳA （ｇ／ｄ）：０．７≦ＳA
≦１．２ （ｅ）１０％伸長強度ＳB （ｇ／ｄ）：１．０≦ＳB ≦
１．７1. A shock-absorbing polyester fiber comprising a polyester mainly containing ethylene terephthalate as a repeating unit, which simultaneously satisfies the following requirements (a) to (e): (A) Strength ST (g / d): ST ≧ 5.0 (b) Elongation EL (%): 25 ≦ EL ≦ 50 (c) Initial modulus M (g / d): 40 ≦ M ≦ 90 (d ) Primary yield strength S A (g / d): 0.7 ≦ S A
≦ 1.2 (e) 10% elongation strength S B (g / d): 1.0 ≦ S B ≦
1.7
レートに第３成分をテレフタル酸成分を基準として５〜
１８モル％共重合したポリエステルであり、その固有粘
度が０．７〜１．２である請求項１記載の衝撃吸収性ポ
リエステル繊維。2. The polyester comprises polyethylene terephthalate and a third component based on the terephthalic acid component of 5 to 5.
The impact-absorbing polyester fiber according to claim 1, which is a polyester copolymerized with 18 mol% and has an intrinsic viscosity of 0.7 to 1.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30275795A JPH09143816A (en) | 1995-11-21 | 1995-11-21 | Shock absorbing polyester fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30275795A JPH09143816A (en) | 1995-11-21 | 1995-11-21 | Shock absorbing polyester fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09143816A true JPH09143816A (en) | 1997-06-03 |
Family
ID=17912785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30275795A Pending JPH09143816A (en) | 1995-11-21 | 1995-11-21 | Shock absorbing polyester fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09143816A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999061687A1 (en) * | 1998-05-22 | 1999-12-02 | Alliedsignal Inc. | Process for making load limiting yarn |
| JP2003089937A (en) * | 2001-09-14 | 2003-03-28 | Unitica Fibers Ltd | Polyester yarn for safety net and safety net using the same |
| JP2008114583A (en) * | 2006-10-11 | 2008-05-22 | Sekisui Chem Co Ltd | Multilayer structure |
| JP2009249782A (en) * | 2008-04-09 | 2009-10-29 | Teijin Fibers Ltd | Impact-absorbing rope, method for producing the impact-absorbing rope, and protector using the same |
| JP2010168685A (en) * | 2009-01-22 | 2010-08-05 | Asahi Kasei Fibers Corp | Abrasion-resistant polyester fiber and method for producing the same |
| WO2010120107A3 (en) * | 2009-04-14 | 2011-03-31 | 주식회사 코오롱 | Polyester yarn for an airbag and method manufacturing for manufacturing same |
| WO2011074920A3 (en) * | 2009-12-18 | 2011-11-24 | Kolon Industries, Inc. | Polyester fiber for airbag and preparation method thereof |
| WO2011122802A3 (en) * | 2010-03-29 | 2012-03-15 | 코오롱인더스트리 주식회사 | Polyester yarn and method for manufacturing same |
| WO2013048203A2 (en) * | 2011-09-30 | 2013-04-04 | Kolon Industries, Inc. | Polyester fiber and rope including the same |
| JP2015063788A (en) * | 2014-10-29 | 2015-04-09 | 旭化成せんい株式会社 | Abrasion resistant polyester fiber and manufacturing method thereof |
-
1995
- 1995-11-21 JP JP30275795A patent/JPH09143816A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999061687A1 (en) * | 1998-05-22 | 1999-12-02 | Alliedsignal Inc. | Process for making load limiting yarn |
| US6228488B1 (en) | 1998-05-22 | 2001-05-08 | Alliedsignal Inc. | Process for making load limiting yarn |
| US6340524B1 (en) | 1998-05-22 | 2002-01-22 | Alliedsignal Inc. | Process for making load limiting yarn |
| US6613257B2 (en) | 1998-05-22 | 2003-09-02 | Alliedsignal Inc. | Process for making load limiting yarn |
| JP2003089937A (en) * | 2001-09-14 | 2003-03-28 | Unitica Fibers Ltd | Polyester yarn for safety net and safety net using the same |
| JP2008114583A (en) * | 2006-10-11 | 2008-05-22 | Sekisui Chem Co Ltd | Multilayer structure |
| JP2009249782A (en) * | 2008-04-09 | 2009-10-29 | Teijin Fibers Ltd | Impact-absorbing rope, method for producing the impact-absorbing rope, and protector using the same |
| JP2010168685A (en) * | 2009-01-22 | 2010-08-05 | Asahi Kasei Fibers Corp | Abrasion-resistant polyester fiber and method for producing the same |
| WO2010120107A3 (en) * | 2009-04-14 | 2011-03-31 | 주식회사 코오롱 | Polyester yarn for an airbag and method manufacturing for manufacturing same |
| US9758903B2 (en) | 2009-04-14 | 2017-09-12 | Kolon Industries, Inc. | Polyester fiber for airbag and preparation method thereof |
| WO2011074920A3 (en) * | 2009-12-18 | 2011-11-24 | Kolon Industries, Inc. | Polyester fiber for airbag and preparation method thereof |
| US9617664B2 (en) | 2009-12-18 | 2017-04-11 | Kolon Industries, Inc. | Polyester fiber for airbag and preparation method thereof |
| WO2011122802A3 (en) * | 2010-03-29 | 2012-03-15 | 코오롱인더스트리 주식회사 | Polyester yarn and method for manufacturing same |
| CN102918187A (en) * | 2010-03-29 | 2013-02-06 | 可隆工业株式会社 | Polyester yarn and method for manufacturing same |
| US9499928B2 (en) | 2010-03-29 | 2016-11-22 | Kolon Industries, Inc. | Polyester fiber suitable for air bag and method for producing the polyester fiber |
| WO2013048203A2 (en) * | 2011-09-30 | 2013-04-04 | Kolon Industries, Inc. | Polyester fiber and rope including the same |
| WO2013048203A3 (en) * | 2011-09-30 | 2013-05-23 | Kolon Industries, Inc. | Polyester fiber and rope including the same |
| JP2015063788A (en) * | 2014-10-29 | 2015-04-09 | 旭化成せんい株式会社 | Abrasion resistant polyester fiber and manufacturing method thereof |
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