JPH11302959A - Non-woven fabric and civil engineering material - Google Patents
Non-woven fabric and civil engineering materialInfo
- Publication number
- JPH11302959A JPH11302959A JP11301298A JP11301298A JPH11302959A JP H11302959 A JPH11302959 A JP H11302959A JP 11301298 A JP11301298 A JP 11301298A JP 11301298 A JP11301298 A JP 11301298A JP H11302959 A JPH11302959 A JP H11302959A
- Authority
- JP
- Japan
- Prior art keywords
- nonwoven fabric
- fiber
- elongation
- fibers
- conjugate 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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Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、伸長性、生産性に
優れた不織布および土木資材に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nonwoven fabric and an engineering material excellent in extensibility and productivity.
【０００２】[0002]
【従来の技術】従来より伸長性が向上した不織布として
様々なものが提案されている。たとえばハップ材の基材
等の医療・衛生材料には伸長性が優れた不織布が開発さ
れている。これらの不織布には、ポリウレタン等からな
る弾性繊維等の残留伸度の高い繊維を用いるものと、ス
パイラル捲縮等の捲縮を発現する捲縮繊維を使用する場
合がある。しかしいずれの場合も、ポリウレタンのよう
に原料が高価であったり、捲縮を発現させるための熱処
理が必要であったりして、スパンボンド法に代表される
通常の不織布製造方法よりコストもかかり、生産性も低
い。さらに重要なことは、もっとも生産性に優れるスパ
ンボンド法においても、ポリエチレンテレフタレート
（以下ＰＥＴと略す。）の紡糸速度は、５０００〜６０
００ｍ／分程度であり、さらなる紡糸速度の高速化によ
る生産性向上を図ろうとしても、不織布の伸長性に寄与
する構成繊維の伸度を大きく減少させてしまうという問
題点があった。2. Description of the Related Art Various nonwoven fabrics having improved extensibility have been proposed. For example, nonwoven fabrics having excellent extensibility have been developed for medical and sanitary materials such as base materials for haptic materials. As these nonwoven fabrics, there are cases where fibers having high residual elongation such as elastic fibers made of polyurethane or the like and crimped fibers which exhibit crimping such as spiral crimping are used. However, in each case, the raw material is expensive like polyurethane, or heat treatment is required to develop crimp, and it costs more than a normal nonwoven fabric manufacturing method represented by a spun bond method. Low productivity. More importantly, the spinning speed of polyethylene terephthalate (hereinafter abbreviated as PET) is 5000 to 60 even in the spunbond method which is most excellent in productivity.
At about 00 m / min, there is a problem that the elongation of the constituent fibers contributing to the elongation of the nonwoven fabric is greatly reduced even if the productivity is improved by further increasing the spinning speed.
【０００３】一方、ＰＥＴの高速紡糸化のため、特開昭
５６−９１０１３号公報や特開平８−２４６２４７号公
報に、ポリエステル繊維に、ポリスチレン系ポリマのよ
うな非相溶ポリマを配合することにより、残留伸度の大
きな繊維を得て、さらに紡糸速度を向上させることが報
告されている。On the other hand, for high-speed spinning of PET, Japanese Patent Application Laid-Open No. 56-91013 and Japanese Patent Application Laid-Open No. 8-246247 disclose the incorporation of an incompatible polymer such as a polystyrene-based polymer into polyester fiber. It is reported that a fiber having a large residual elongation is obtained and the spinning speed is further improved.
【０００４】しかしながら、不織布として高伸長性と生
産性を両立したものはいまだ得られていないのが実状で
ある。[0004] However, a nonwoven fabric having both high elongation and high productivity has not yet been obtained.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、かかる従来
技術の背景に鑑み、高伸長性と生産性を両立した、すな
わち、特殊な弾性繊維や捲縮繊維を使用することなく伸
長性に優れ、かつ、生産性にも優れた不織布および土木
資材を提供せんとするものである。SUMMARY OF THE INVENTION In view of the background of the prior art, the present invention achieves both high elongation and high productivity, that is, excellent extensibility without using special elastic fibers or crimped fibers. Further, it is an object of the present invention to provide nonwoven fabrics and civil engineering materials excellent in productivity.
【０００６】[0006]
【課題を解決するための手段】本発明は、かかる課題を
解決するために、つぎのような手段を採用する。すなわ
ち、本発明の不織布は、ポリスチレン系ポリマ、ポリア
クリレート系ポリマ、アクリレート−スチレン共重合系
ポリマおよびメチルペンテン系ポリマから選ばれた少な
くとも１種の複合成分を、０．１〜１５重量％含有する
ポリエステル複合繊維を含む不織布であって、かつ、引
張試験機において試料長２００ｍｍ、引張速度２００ｍ
ｍ／分の条件で測定したときの該複合繊維の伸度が８０
％以上であることを特徴とするものである。The present invention employs the following means in order to solve the above problems. That is, the nonwoven fabric of the present invention contains 0.1 to 15% by weight of at least one composite component selected from a polystyrene-based polymer, a polyacrylate-based polymer, an acrylate-styrene copolymer-based polymer, and a methylpentene-based polymer. A nonwoven fabric containing a polyester composite fiber, and a tensile tester has a sample length of 200 mm and a tensile speed of 200 m.
The elongation of the conjugate fiber measured under the conditions of m / min is 80
% Or more.
【０００７】[0007]
【発明の実施の形態】本発明は、高伸長性と生産性を両
立する不織布を提供するために、鋭意検討したところ、
特定なポリマを複合成分としてなるポリエステル複合繊
維で不織布を構成したところ、前記課題を一挙に解決す
る不織布を提供することができることを究明したもので
ある。BEST MODE FOR CARRYING OUT THE INVENTION The present invention has been intensively studied in order to provide a nonwoven fabric having both high elongation and productivity.
It has been found that when a nonwoven fabric is constituted by a polyester composite fiber comprising a specific polymer as a composite component, a nonwoven fabric that can solve the above-mentioned problems at once can be provided.
【０００８】本発明のポリエステル複合繊維の複合成分
としては、ポリスチレン系ポリマ、ポリアクリレート系
ポリマ、アクリレート−スチレン共重合系ポリマおよび
メチルペンテン系ポリマから選ばれた少なくとも１種を
用いることが必要である。これらのポリマは特開平８−
２４６２４７に開示されているように伸長粘度の温度依
存性がポリエステルより高いポリマであり、これらのポ
リマを含むポリエステル繊維は、分子配向が抑制される
ため、紡糸速度が６０００ｍ／分を越えてもポリエステ
ル複合繊維の伸度は、引張試験機において試料長２００
ｍｍ、引張速度２００ｍｍ／分の条件で測定したときの
該複合繊維の伸度として、８０％を越えるものが得られ
る。かかる伸度が８０％未満であると、それによって構
成される不織布の伸度が十分に得られないため、本発明
の高伸長性の不織布を得るためには、ポリエステル複合
繊維の伸度が８０％以上であることが重要である。ここ
で複合成分の配合量は０．１〜１５重量％であることが
重要であり、好ましくは０．１〜１０重量％であること
が望ましい。０．１重量％未満では複合成分による分子
配向抑制効果が小さすぎ、繊維の伸度増加がみられな
い。一方１５重量％を越える場合は、ポリエステル繊維
としての力学的性質が低下する問題が発生するばかり
か、紡糸時の断糸が多発する問題が発生する。As the composite component of the polyester composite fiber of the present invention, it is necessary to use at least one selected from polystyrene-based polymers, polyacrylate-based polymers, acrylate-styrene copolymer-based polymers and methylpentene-based polymers. . These polymers are disclosed in
As disclosed in US Pat. No. 246247, it is a polymer having a higher temperature dependency of elongational viscosity than polyester. Polyester fibers containing these polymers have a reduced molecular orientation, so that even if the spinning speed exceeds 6000 m / min. The elongation of the composite fiber was measured using a tensile tester with a sample length of 200.
mm and a tensile rate of 200 mm / min, the elongation of the conjugate fiber exceeds 80%. If the elongation is less than 80%, the elongation of the nonwoven fabric constituted by the polyester composite fiber cannot be sufficiently obtained. % Is important. Here, it is important that the compounding amount of the composite component is 0.1 to 15% by weight, and preferably 0.1 to 10% by weight. If it is less than 0.1% by weight, the effect of suppressing the molecular orientation by the composite component is too small, and no increase in the elongation of the fiber is observed. On the other hand, when the content exceeds 15% by weight, not only a problem that the mechanical properties as the polyester fiber is deteriorated, but also a problem that the yarn breakage during spinning frequently occurs.
【０００９】複合成分としては、ポリスチレン系ポリ
マ、ポリアクリレート系ポリマ、アクリレート−スチレ
ン共重合系ポリマおよびメチルペンテン系ポリマから選
ばれた少なくとも１種を用いることが必要であるが、コ
ストや入手しやすさおよび紡糸性の点からホリスチレ
ン、ポリメチルメタクリレートおよびポリ（４−メチル
−１ペンテン）が好ましい。また複合成分のポリマとし
て上記ポリマにポリエステルをブレンド等の手段で含ま
せる場合は、複合成分がポリエステルと１：９〜９：１
の重量比率でブレンドされれば、ポリエステル全体に上
記ポリマをブレンドする場合よりも、ブレンド比率が大
きくブレンド斑が起きにくいので好ましい。As the composite component, it is necessary to use at least one selected from a polystyrene-based polymer, a polyacrylate-based polymer, an acrylate-styrene copolymer-based polymer and a methylpentene-based polymer. Polystyrene, polymethyl methacrylate and poly (4-methyl-1pentene) are preferred from the viewpoints of spinnability and spinnability. When a polyester is included in the polymer as a polymer of the composite component by means such as blending, the composite component is mixed with the polyester at a ratio of 1: 9 to 9: 1.
Is preferable because the blend ratio is large and the blending unevenness is unlikely to occur, as compared with the case where the polymer is blended with the entire polyester.
【００１０】一方、複合繊維の形態としては、ブレンド
型複合繊維、バイメタル型複合繊維、同心円型複合繊
維、多芯型複合繊維、海島型複合繊維、および偏芯芯鞘
型複合繊維から選ばれた少なくとも１種の構造であるこ
とが好ましく、さらに言えば該複合繊維が最外側膜とし
てポリエステル皮膜を有することが好ましい。なぜなら
ばポリエステル皮膜が最外層に存在すれば、紡糸性が安
定する傾向だからである。On the other hand, the form of the conjugate fiber is selected from blend type conjugate fiber, bimetal type conjugate fiber, concentric conjugate fiber, multi-core type conjugate fiber, sea-island type conjugate fiber, and eccentric core-sheath type conjugate fiber. Preferably, the composite fiber has at least one kind of structure, and more preferably, the conjugate fiber has a polyester film as an outermost film. This is because spinning properties tend to be stable if the polyester film is present in the outermost layer.
【００１１】また該複合繊維が８０％以上の伸度であ
り、かつ繊維の機械的特性を得るためには紡糸速度は４
０００ｍ／分以上が好ましく、さらに好ましくは６００
０ｍ／分以上である。また９０００ｍ／分を越えると伸
度８０％以上の繊維が得にくくなるので好ましくない。[0011] In addition, the spinning speed of the conjugate fiber is 4% or more in order to obtain an elongation of 80% or more and to obtain mechanical properties of the fiber.
000 m / min or more, more preferably 600 m / min.
0 m / min or more. On the other hand, if it exceeds 9000 m / min, it is difficult to obtain fibers having an elongation of 80% or more, which is not preferable.
【００１２】ここでポリエステルとしては、ＰＥＴ、ポ
リブチレンテレフタレート、ポリエチレンナフタレート
等を好ましく使用することができるが、ＰＥＴが最も好
ましく用いられる。Here, as the polyester, PET, polybutylene terephthalate, polyethylene naphthalate and the like can be preferably used, and PET is most preferably used.
【００１３】ところで、本発明の不織布は、溶融紡糸で
得られた繊維を、長繊維あるいは短繊維の形態でウェブ
を製造できるが、一般的には生産性に優れたスパンボン
ド法でウェブが形成される。得られたウェブは熱接着や
交絡処理によりシート化させるが、該複合繊維は、熱に
より接着しやすいため、該複合繊維の伸長性を不織布の
伸長性に活かすには交絡処理することが好ましい。交絡
処理の方法としては、ウォータージェットパンチ処理お
よびニードルパンチ処理が一般的であり、生産性にも優
れるので好ましい。By the way, the nonwoven fabric of the present invention can produce a web in the form of a long fiber or a short fiber from the fiber obtained by melt spinning. Generally, the web is formed by a spun bond method which is excellent in productivity. Is done. The obtained web is formed into a sheet by heat bonding or entanglement treatment. However, since the conjugate fiber is easily bonded by heat, entanglement treatment is preferably performed in order to utilize the extensibility of the conjugate fiber to the extensibility of the nonwoven fabric. As a method of the confounding treatment, a water jet punching treatment and a needle punching treatment are generally used, and are preferable because of excellent productivity.
【００１４】また該不織布が該複合繊維以外に、ポリエ
ステル系繊維、ポリアミド系繊維、ポリオレフィン系繊
維、アクリル系繊維、ポリウレタン系繊維、ポリフェニ
ルスルホン系繊維及びアラミド系繊維から選ばれた少な
くとも１種を含んでいる場合でも、該複合繊維の特徴で
ある高伸長性が活かされ、他繊維と不織布にスムーズに
一体化されるため、他繊維の特徴を減じない。[0014] The non-woven fabric may further comprise at least one selected from polyester fibers, polyamide fibers, polyolefin fibers, acrylic fibers, polyurethane fibers, polyphenylsulfone fibers and aramid fibers in addition to the conjugate fibers. Even in the case of containing, the high elongation characteristic of the composite fiber is utilized and the other fiber and the nonwoven fabric are smoothly integrated, so that the characteristics of the other fiber are not reduced.
【００１５】さらに、補強繊維構造物を含む場合におい
ても、補強繊維構造物によるシート全体の強力向上と、
該複合繊維が構成する不織布の局部的な伸長性、変形し
やすさとの両立が可能である。ここで言う補強繊維構造
物としては、織物あるいは編物が汎用性があり好まし
い。Further, even in the case where the reinforcing fiber structure is included, the strength of the entire sheet is improved by the reinforcing fiber structure, and
It is possible to achieve both the local extensibility and the ease of deformation of the nonwoven fabric formed by the composite fiber. As the reinforcing fiber structure mentioned here, a woven or knitted fabric is preferable because of its versatility.
【００１６】ところで、該不織布はＪＩＳ Ｌ−１９０
６に基づいて測定した場合の伸度が縦（ＭＤ）、横（Ｃ
Ｄ）とも７０％以上であることが好ましい。本発明の複
合繊維からなる不織布では不織布の伸度が７０％以上は
容易に達成できるが、不織布内の複合繊維の含有量が極
端に少なかったり、補強繊維構造物の伸度が７０％未満
であると、本発明の不織布の特徴である高伸長性が得ら
れないので、不織布の伸度７０％以上となるように、複
合繊維以外の繊維や、補強繊維構造物を選択することが
好ましい。Incidentally, the nonwoven fabric is JIS L-190.
The elongation measured on the basis of No. 6 is vertical (MD) and horizontal (C).
Both D) are preferably 70% or more. In the nonwoven fabric composed of the composite fiber of the present invention, the elongation of the nonwoven fabric can easily be at least 70%, but the content of the composite fiber in the nonwoven fabric is extremely small or the elongation of the reinforcing fiber structure is less than 70%. If so, the high elongation characteristic of the nonwoven fabric of the present invention cannot be obtained. Therefore, it is preferable to select a fiber other than the conjugate fiber or a reinforcing fiber structure so that the nonwoven fabric has an elongation of 70% or more.
【００１７】本発明の不織布は、その高伸長性を活かし
て様々な用途に展開が可能であるが特に好ましい例とし
て土木資材が上げられる。土木資材は凹凸のある地盤に
適応したり、地盤の沈下や陥没にも適応しなければなら
ないため、高伸長性が要求される。したがって本発明の
不織布は土木資材に非常に適した特性を持つといえる。The nonwoven fabric of the present invention can be developed for various uses by taking advantage of its high extensibility, but a particularly preferred example is a civil engineering material. Civil engineering materials must be adapted to uneven ground, and must also adapt to land subsidence or depression, so high extensibility is required. Therefore, it can be said that the nonwoven fabric of the present invention has characteristics very suitable for civil engineering materials.
【００１８】また、本発明の不織布のＪＩＳ Ｌ−１９
０６に基づいて測定した場合の伸度が１５０％を越える
と、土木資材として必要な補強効果が十分でなくなるた
め、不織布の伸度が７０〜１５０％であることが好まし
い。Further, the nonwoven fabric of the present invention may be JIS L-19.
If the elongation as measured on the basis of No. 06 exceeds 150%, the reinforcing effect required for civil engineering materials will not be sufficient, so the elongation of the nonwoven fabric is preferably 70 to 150%.
【００１９】[0019]
【実施例】以下、本発明を実施例を用いて詳細に説明す
る。なお実施例中の測定方法は以下の方法を用いた。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to embodiments. The following method was used for the measurement in the examples.
【００２０】Ａ．繊維の伸度 引張試験機において試料長２００ｍｍ、引張速度２００
ｍｍ／分の条件で伸長曲線を求め、伸びを試料長で割り
伸度とした。A. Elongation of fiber Sample length 200mm, tensile speed 200 in tensile tester
The elongation curve was determined under the condition of mm / min, and the elongation was divided by the sample length to obtain the elongation.
【００２１】Ｂ．不織布の伸度 ＪＩＳ１９０６に準じ、引張試験機で試料長２００ｍ
ｍ、引張速度２００ｍｍ／分の条件で伸長曲線を求め、
伸びを試料長で割り伸度とした。B. Elongation of non-woven fabric Sample length 200m with a tensile tester according to JIS1906
m, the elongation curve is determined under the conditions of a tensile speed of 200 mm / min,
The elongation was taken as the elongation divided by the sample length.
【００２２】実施例１ 極限粘度０．６３のＰＥＴとポリスチレン（旭化成社製
スタイロン６８５）を別々に溶融し、濾過系１５μのス
テンレス製不織布フィルターにより濾過した後、ポリス
チレンを芯、ＰＥＴを鞘の同心円上の芯鞘複合にして芯
成分が５重量％となるように複合繊維を溶融紡糸し、公
知のスパンボンド法により、エジェクターで紡糸速度６
０００ｍ／分で高速牽引し、単糸繊度３ｄの繊維を得
て、走行するネット上に、噴射、開繊された繊維を捕集
し、目付１００ｇ／ｍ2 のウェブを得た後、温度１５０
度のカレンダーロールでウェブを仮接着し、仮接着シー
トを得た。この際紡糸された繊維の伸度は１３０％であ
った。次に仮接着シートを、ナインバーブの針で、針深
度１０ｍｍ、パンチ密度８０本の条件でニードルパンチ
加工を行い、目付１００ｇ／ｍ2 のニードルパンチシー
トを得た。ニードルパンチシートの伸度を測定した結
果、表１に示すように伸度は縦（ＭＤ）１００％で横
（ＣＤ）が１２０％であり、伸長性に優れるものであっ
た。得られた不織布は地盤の凹凸などの変化に適応しや
すい土木資材として最適のものであった。Example 1 PET having an intrinsic viscosity of 0.63 and polystyrene (Stylon 685, manufactured by Asahi Kasei Corporation) were separately melted, filtered through a stainless steel non-woven fabric filter having a filtration system of 15 μm, and then a polystyrene core and PET concentric circles. The composite fiber is melt-spun so that the core component becomes 5% by weight in the above core-sheath composite, and the spinning speed is 6 by an ejector by a known spunbonding method.
000M / min and fast drag, to give a fiber having a single fiber fineness 3d, on the traveling net, injection, collecting the opened fibers, after obtaining the basis weight of 100 g / m 2 web, a temperature of 150
The web was temporarily bonded with a calender roll to obtain a temporary adhesive sheet. At this time, the elongation of the spun fiber was 130%. Next, the temporary adhesive sheet was subjected to needle punching with a needle of nine barbs at a needle depth of 10 mm and a punch density of 80 needles to obtain a needle punch sheet having a basis weight of 100 g / m 2 . As a result of measuring the elongation of the needle punch sheet, as shown in Table 1, the elongation was 100% in the longitudinal (MD) and 120% in the lateral (CD), and was excellent in extensibility. The obtained nonwoven fabric was the most suitable as a civil engineering material that easily adapts to changes such as unevenness of the ground.
【００２３】実施例２ ポリスチレンをポリメチルメタクリレート（住友化学工
業社製スミペックスＬＧ）とした以外は実施例１と同様
の条件で不織布を製造した。繊維の伸度および不織布の
伸度は表１に示すとおり、ポリスチレンの場合と同様に
良好な伸長性を示した。Example 2 A non-woven fabric was produced under the same conditions as in Example 1 except that polystyrene was changed to polymethyl methacrylate (Sumipex LG, manufactured by Sumitomo Chemical Co., Ltd.). As shown in Table 1, the elongation of the fiber and the elongation of the nonwoven fabric showed good elongation as in the case of polystyrene.
【００２４】実施例３ 複合繊維の芯成分にＰＳＴとＰＥＴを１対１の割合でブ
レンドし、芯成分が１０重量％の複合繊維とした以外
は、実施例１と同様の条件で不織布を製造した。繊維の
伸度および不織布の伸度は表１に示すとおり、良好な伸
長性を示した。Example 3 A nonwoven fabric was produced under the same conditions as in Example 1 except that the core component of the composite fiber was blended with PST and PET at a ratio of 1: 1 to obtain a composite fiber having a core component of 10% by weight. did. As shown in Table 1, the elongation of the fiber and the elongation of the nonwoven fabric showed good elongation.
【００２５】実施例４ ＰＥＴにポリスチレンを５重量％ブレンドしてブレンド
型複合繊維とした以外は、実施例１と同様の条件で不織
布を製造した。繊維および不織布の伸度は表１に示すと
おり良好であったが、実施例１の芯鞘型複合繊維に比べ
糸切れが多い傾向であった。Example 4 A nonwoven fabric was produced under the same conditions as in Example 1 except that 5% by weight of PET was blended with PET to obtain a blend type composite fiber. Although the elongation of the fiber and the nonwoven fabric were good as shown in Table 1, the yarn breakage tended to be larger than that of the core-sheath composite fiber of Example 1.
【００２６】実施例５ 不織布の絡合処理をウォータージェットパンチで行った
以外は実施例１と同様の条件で不織布を製造した。ウォ
ータージェットパンチはノズル径０．２ｍｍ、ノズルピ
ッチ０．８ｍｍ、ライン速度１０ｍ／分で水圧３０ｋｇ
／ｃｍ2 、５０ｋｇ／ｃｍ2 、７０ｋｇ／ｃｍ2 、１０
０ｋｇ／ｃｍ2 の条件で順次処理して不織布を得た。Example 5 A nonwoven fabric was manufactured under the same conditions as in Example 1 except that the entanglement treatment of the nonwoven fabric was performed with a water jet punch. The water jet punch has a nozzle diameter of 0.2 mm, a nozzle pitch of 0.8 mm, a line speed of 10 m / min and a water pressure of 30 kg.
/ Cm 2 , 50 kg / cm 2 , 70 kg / cm 2 , 10
The treatment was sequentially performed under the condition of 0 kg / cm 2 to obtain a nonwoven fabric.
【００２７】繊維および不織布の伸度は表１に示すとお
り良好であった。The elongation of the fiber and the nonwoven fabric was good as shown in Table 1.
【００２８】実施例６ 目付が５０ｇ／ｍ2 である他は実施例１と同様にして得
られたウェブとＰＥＴ単独で目付５０ｇ／ｍ2 である他
は実施例１と同様にして得られたウェブを積層して実施
例１と同様の条件でニードルパンチを行い不織布を得
た。不織布の伸度は表１に示すとおり、実施例１の場合
よりも劣るが十分な伸長性を示した。Example 6 A web obtained in the same manner as in Example 1 except that the basis weight was 50 g / m 2 , and PET was obtained in the same manner as in Example 1 except that the basis weight of PET alone was 50 g / m 2 . The web was laminated and needle punched under the same conditions as in Example 1 to obtain a nonwoven fabric. As shown in Table 1, the elongation of the nonwoven fabric was inferior to that of Example 1, but showed sufficient elongation.
【００２９】実施例７ ポリウレタン弾性繊維からなる織物をニードルパンチ加
工時に積層した他は実施例１と同様の条件で不織布を製
造した。不織布の伸度は表１に示すとおり良好であっ
た。Example 7 A non-woven fabric was produced under the same conditions as in Example 1 except that a woven fabric made of polyurethane elastic fiber was laminated during needle punching. The elongation of the nonwoven fabric was good as shown in Table 1.
【００３０】比較例１ ＰＳＴとＰＥＴの複合繊維ではなく、ＰＥＴ単独とした
以外は実施例１と同様の条件で不織布を製造した。繊維
の伸度および不織布の伸度は表１に示すとおり、実施例
１のレベルを大きく下回るものであり、土木資材として
も地盤への適応性が優れているとは言えないレベルのも
のであった。Comparative Example 1 A nonwoven fabric was manufactured under the same conditions as in Example 1 except that PET was used alone instead of the composite fiber of PST and PET. As shown in Table 1, the elongation of the fiber and the elongation of the nonwoven fabric are much lower than the level of Example 1, and are not at a level that is excellent in adaptability to the ground as a civil engineering material. Was.
【００３１】比較例２ ＰＳＴの複合率を２０重量％とした以外は実施例１と同
様の条件で不織布を製造したが、糸切れが多く紡糸不能
であった。Comparative Example 2 A nonwoven fabric was produced under the same conditions as in Example 1 except that the composite ratio of PST was changed to 20% by weight.
【００３２】比較例３ 紡糸速度１００００ｍ／分である以外は実施例１と同様
の条件で不織布を製造した。繊維の伸度および不織布の
伸度は表１に示すとおり、実施例１のレベルを大きく下
回るものであり、土木資材としても地盤への適応性が優
れているとは言えないレベルのものであった。Comparative Example 3 A nonwoven fabric was produced under the same conditions as in Example 1 except that the spinning speed was 10,000 m / min. As shown in Table 1, the elongation of the fiber and the elongation of the nonwoven fabric are much lower than the level of Example 1, and are not at a level that is excellent in adaptability to the ground as a civil engineering material. Was.
【００３３】[0033]
【表１】 [Table 1]
【００３４】[0034]
【発明の効果】本発明によれば、高伸長性に優れた不織
布提供することができ、かつ紡糸速度を低下させずに生
産できる上に、この不織布を使用することにより地盤適
応性に優れた土木資材を提供することができる。According to the present invention, it is possible to provide a nonwoven fabric excellent in high elongation, to produce it without lowering the spinning speed, and to use the nonwoven fabric to provide excellent ground adaptability. We can provide civil engineering materials.
Claims (16)
ト系ポリマ、アクリレート−スチレン共重合系ポリマお
よびメチルペンテン系ポリマから選ばれた少なくとも１
種の複合成分を、０．１〜１５重量％含有するポリエス
テル複合繊維を含む不織布であって、かつ、引張試験機
において試料長２００ｍｍ、引張速度２００ｍｍ／分の
条件で測定したときの該複合繊維の伸度が８０％以上で
あることを特徴とする不織布。1. At least one selected from a polystyrene polymer, a polyacrylate polymer, an acrylate-styrene copolymer polymer and a methylpentene polymer.
A nonwoven fabric containing a polyester composite fiber containing 0.1 to 15% by weight of various composite components, and the composite fiber when measured by a tensile tester under the conditions of a sample length of 200 mm and a tensile speed of 200 mm / min. A nonwoven fabric having an elongation of 80% or more.
ルメタクリレートおよびポリ（４−メチル−１ペンテ
ン）から選ばれた少なくとも１種を含むポリマである請
求項１記載の不織布。2. The nonwoven fabric according to claim 1, wherein said composite component is a polymer containing at least one selected from polystyrene, polymethyl methacrylate and poly (4-methyl-1 pentene).
を０．１〜１０重量％含むものである請求項１または２
記載の不織布。3. The polyester composite fiber according to claim 1, wherein the composite component contains 0.1 to 10% by weight of the composite component.
The described nonwoven fabric.
９：１の重量比率でブレンドされたものである請求項１
〜３のいずれかに記載の不織布。4. The method according to claim 1, wherein the composite component is composed of a polyester and 1: 9 to
2. The composition of claim 1, which is blended at a weight ratio of 9: 1.
4. The nonwoven fabric according to any one of items 1 to 3.
イメタル型複合繊維、同心円型複合繊維、多芯型複合繊
維、海島型複合繊維および偏芯芯鞘型複合繊維から選ば
れた少なくとも１種の構造からなるものである請求項１
〜４のいずれかに記載の不織布。5. The conjugate fiber is at least one selected from a blend conjugate fiber, a bimetal conjugate fiber, a concentric conjugate fiber, a multi-core conjugate fiber, a sea-island conjugate fiber, and an eccentric core-sheath conjugate fiber. 2. The structure according to claim 1,
5. The nonwoven fabric according to any one of items 1 to 4.
テルの被膜を有するものである請求項１〜５のいずれか
に記載の不織布。6. The nonwoven fabric according to claim 1, wherein the conjugate fiber has a polyester coating as an outermost film.
００ｍ／分で紡糸された繊維である請求項１〜６のいず
れかに記載の不織布。7. The method according to claim 6, wherein the conjugate fiber has a spinning speed of 4000 to 90.
The nonwoven fabric according to any one of claims 1 to 6, which is a fiber spun at 00 m / min.
タレートである請求項１〜７のいずれかに記載の不織
布。8. The nonwoven fabric according to claim 1, wherein the polyester is polyethylene terephthalate.
請求項１〜８のいずれかに記載の不織布。9. The nonwoven fabric according to claim 1, wherein the nonwoven fabric has been entangled.
ンチ処理およびニードルパンチ処理の少なくとも１種で
ある請求項１〜９のいずれかに記載の不織布。10. The nonwoven fabric according to claim 1, wherein the confounding treatment is at least one of a water jet punching treatment and a needle punching treatment.
エステル系繊維、ポリアミド系繊維、ポリオレフィン系
繊維、アクリル系繊維、ポリウレタン系繊維、ポリフェ
ニルスルホン系繊維およびアラミド系繊維から選ばれた
少なくとも１種を含むものである請求項１〜１０のいず
れかに記載の不織布。11. The non-woven fabric, in addition to the conjugate fiber, at least one selected from polyester fibers, polyamide fibers, polyolefin fibers, acrylic fibers, polyurethane fibers, polyphenylsulfone fibers and aramid fibers. The nonwoven fabric according to any one of claims 1 to 10, which comprises a seed.
のである請求項１〜１１のいずれかに記載の不織布。12. The nonwoven fabric according to claim 1, wherein the nonwoven fabric contains a reinforcing fiber structure.
である請求項１２記載の不織布。13. The nonwoven fabric according to claim 12, wherein the reinforcing fiber structure is a woven or knitted fabric.
基づいて測定したときの伸度が７０％以上であるもので
ある請求項１〜１３のいずれかに記載の不織布。14. The nonwoven fabric according to claim 1, wherein the nonwoven fabric has an elongation of 70% or more as measured according to JIS L-1906.
織布で構成されていることを特徴とする土木資材。15. A civil engineering material comprising the nonwoven fabric according to claim 1. Description:
基づいて測定したときの伸度が７０〜１５０の範囲にあ
るものである請求項１５記載の土木資材。16. The civil engineering material according to claim 15, wherein the nonwoven fabric has an elongation of 70 to 150 as measured according to JIS L-1906.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11301298A JP3674302B2 (en) | 1998-04-23 | 1998-04-23 | Nonwoven fabric and civil engineering materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11301298A JP3674302B2 (en) | 1998-04-23 | 1998-04-23 | Nonwoven fabric and civil engineering materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11302959A true JPH11302959A (en) | 1999-11-02 |
| JP3674302B2 JP3674302B2 (en) | 2005-07-20 |
Family
ID=14601233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11301298A Expired - Fee Related JP3674302B2 (en) | 1998-04-23 | 1998-04-23 | Nonwoven fabric and civil engineering materials |
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| Country | Link |
|---|---|
| JP (1) | JP3674302B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002038365A (en) * | 2000-07-31 | 2002-02-06 | Toray Ind Inc | Nonwoven fabric for civil engineering and method for producing the same |
| JP2003518206A (en) * | 1999-12-20 | 2003-06-03 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | Melt spun polyester nonwoven sheet |
| JP2006508264A (en) * | 2002-11-27 | 2006-03-09 | ポリフェルト・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | Method for producing geotextiles from melt-spun fibers |
-
1998
- 1998-04-23 JP JP11301298A patent/JP3674302B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003518206A (en) * | 1999-12-20 | 2003-06-03 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | Melt spun polyester nonwoven sheet |
| JP2002038365A (en) * | 2000-07-31 | 2002-02-06 | Toray Ind Inc | Nonwoven fabric for civil engineering and method for producing the same |
| JP4556303B2 (en) * | 2000-07-31 | 2010-10-06 | 東レ株式会社 | Non-woven fabric for civil engineering and manufacturing method thereof |
| JP2006508264A (en) * | 2002-11-27 | 2006-03-09 | ポリフェルト・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | Method for producing geotextiles from melt-spun fibers |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3674302B2 (en) | 2005-07-20 |
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