JP4459680B2 - 不織布の製造方法及び不織布 - Google Patents
不織布の製造方法及び不織布 Download PDFInfo
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- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
- D04H3/04—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments in rectilinear paths, e.g. crossing at right angles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/637—Including strand or fiber material which is a monofilament composed of two or more polymeric materials in physically distinct relationship [e.g., sheath-core, side-by-side, islands-in-sea, fibrils-in-matrix, etc.] or composed of physical blend of chemically different polymeric materials or a physical blend of a polymeric material and a filler material
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Description
(1)芯鞘構造の樹脂単繊維を集束し、芯部樹脂の融点より低く鞘部樹脂の融点より高い温度で延伸しつつ鞘部樹脂を溶融せしめ鞘部樹脂同士を融合し海部樹脂(マトリックス)を構成させ、芯部樹脂を島部樹脂(補強繊維)とする海島構造の複合糸とする方法。
(2)延伸された芯鞘構造の繊維を引き揃えた状態で鞘部の融点より高く、芯部の融点より低い温度で加熱しつつ、所定径のダイスに通して鞘部同士を熱融着する方法。
(3)島部樹脂と、この島部樹脂より20℃以上融点の低い海部樹脂からなる海島構造を有する未延伸糸を延伸させる方法。
より優れた柔軟性および強度を有する複合糸を得るためには、上述の(1)または(2)の方法が好ましく、特に(1)の方法が好ましい。
また、本発明に係る不織布は、加熱された状態で加圧を行うことが更に好ましい。加熱によって複合糸の海部樹脂が溶融され、他の複合糸の海部樹脂と接着するが、加熱された状態で加圧を行うと複合糸が押しつぶされ複合糸と他の複合糸との接面が更に大きくなる。したがって、加熱と同時に加圧をするとより強固な接着力を発揮することができる。なお、前述したドラム31で加圧接触することとすれば一度に加熱加圧処理を行うことが可能で作業性も良好となる。
また、不織布40の製造方法は、経糸11を斜交糸12及び逆斜交糸13の接面の一方面側のみに引き揃え接着した後、他方面側に経糸11を引き揃え接着させて製造される。
芯部樹脂の熱可塑性樹脂としてMFR=20(g/min)のアイソタクチックポリプロピレンを使用し、鞘部樹脂としてMI(190℃)=20(g/min)の低密度ポリエチレン樹脂を使用した。定法の複合紡糸設備、芯鞘型複合紡糸ノズル(150H)を用いて紡糸した。得られた樹脂単繊維を150本集束し、これと直結する延伸設備に通して、絶対圧4.2kPa(145℃)の飽和水蒸気圧下で全延伸倍率14倍のローラー延伸を行い、(直ちに所定形状の成形ダイスに通して、)島部樹脂のポリプロピレン繊維(融点165℃)を海部樹脂の低密度ポリエチレン(融点113℃)で結着した略楕円状の複合糸(島部樹脂と海部樹脂の質量比=55:45)を得た。
得られた複合糸は2200dtexで、島部樹脂の単繊維径33.6μmであり、強度6.0cN/dtexであった。
得られた複合糸を経糸、緯糸として図5に示す製造装置にて、経糸、斜交糸および逆斜交糸を9mmピッチで積層した。その際、経糸は上下層に交互に配置するように、斜交糸および逆斜交糸は中間層に位置するように積層した。その後、表面温度150℃の加熱ローラで接触加熱し、複合糸の海部樹脂を溶融し各層の複合糸を接着し不織布Aを得た。
(比較例)
番手2000dtex(フィラメント本数750本)のビニロン繊維糸を経糸、斜交糸、逆斜交糸とし、それぞれ実施例と同様のピッチで積層した。次いで、アクリル系接着剤に含浸し、表面温度150℃の加熱ローラで接触加熱して、接着剤の付着量がビニロン繊維糸に対し20重量%の不織布Bを得た。
不織布A及びBを折り曲げた場合の追随性について試験を行った。実施例の不織布Aは折り目が簡単につき、折り曲がった形状をそのまま維持していたが、比較例の不織布Bは折り目が付き難く、もとの形状に戻ろうとする反発力が強く折曲がった形状を維持することが困難であった。
JIS規格 R3420 ガラス繊維一般試験方法 7.4(a)織物の引張強さの試験方法に準じ、引張強さを測定した。幅25mmの試験片について経糸方向(経方向)の引張強さと、幅50mmの試験片について経糸方向と直交する方向(緯方向)の引張強さを測定したところ、実施例の不織布Aは経方向370N/25mm、緯方向37N/50mmであり、比較例の不織布Bは経方向480N/25mm、緯方向23N/50mmであった。
Claims (8)
- 繊維状の芯部樹脂がこれより20℃以上融点の低い鞘部樹脂で囲繞された芯鞘構造を有する樹脂単繊維を複数本集束し、前記鞘部樹脂を融合させてなる複合糸を、
経方向、斜方向及び逆斜方向の少なくとも3方向に積層する積層工程と、
積層した複合糸同士を前記芯部樹脂の融点より低く、且つ前記鞘部樹脂の融点より高い温度で加熱して接着する接着工程と、を備える不織布の製造方法。 - 前記複合糸は10〜500本の前記樹脂単繊維からなるものであり、前記複合糸において、前記芯部樹脂は繊度1〜70dtexの繊維状の島部を形成し、融合した前記鞘部樹脂は海部を形成している請求項1記載の不織布の製造方法。
- 前記芯部樹脂及び前記鞘部樹脂がポリオレフィンである請求項1又は2に記載の不織布の製造方法。
- 前記芯部樹脂がポリプロピレンであって、前記鞘部樹脂が融点120℃以下のポリエチレンである請求項1〜3のいずれか一項に記載の不織布の製造方法。
- 繊度1〜70dtexの繊維状の島部樹脂10〜500本が繊維状の海部樹脂中に配された複合糸を、経方向、斜方向及び逆斜方向の少なくとも3方向に積層し、海部樹脂を溶融させて積層した複合糸同士を接着した不織布であって、前記海部樹脂が前記島部樹脂より20℃以上低い融点を有することを特徴とする不織布。
- 前記島部樹脂及び前記海部樹脂がポリオレフィンである請求項5記載の不織布。
- 前記島部樹脂がポリプロピレンであって、前記海部樹脂が融点120℃以下のポリエチレンであることを特徴とする請求項5又は6に記載の不織布。
- 前記島部樹脂と前記海部樹脂の質量比が、20:80〜80:20である請求項5〜7のいずれか一項に記載の不織布。
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JP2004100404A JP4459680B2 (ja) | 2004-03-30 | 2004-03-30 | 不織布の製造方法及び不織布 |
US10/599,400 US20080045109A1 (en) | 2004-03-30 | 2005-03-29 | Process for Producing Nonwoven Fabric and Nonwoven Fabric |
CNB2005800063264A CN100529225C (zh) | 2004-03-30 | 2005-03-29 | 无纺布及其制造方法 |
CA 2561911 CA2561911A1 (en) | 2004-03-30 | 2005-03-29 | Process for producing nonwoven fabric and nonwoven fabric |
PCT/JP2005/005874 WO2005095701A1 (ja) | 2004-03-30 | 2005-03-29 | 不織布の製造方法及び不織布 |
EP05727361A EP1739220A4 (en) | 2004-03-30 | 2005-03-29 | METHOD FOR THE PRODUCTION OF NONWOVEN MATERIAL AND NONWOVEN MATERIAL |
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EP (1) | EP1739220A4 (ja) |
JP (1) | JP4459680B2 (ja) |
CN (1) | CN100529225C (ja) |
CA (1) | CA2561911A1 (ja) |
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JP4933868B2 (ja) * | 2006-09-06 | 2012-05-16 | 宇部日東化成株式会社 | コンクリート構造物の補修または補強用メッシュ状物、およびその製造方法 |
US7993727B2 (en) * | 2007-07-06 | 2011-08-09 | Mitsubishi Electric Corporation | Advanced grid structure |
AT507415B1 (de) * | 2009-01-16 | 2010-05-15 | Landertshamer Friedrich | Maschennetz aus bändchen |
JP2012521279A (ja) * | 2009-03-26 | 2012-09-13 | ビーエル・テクノロジーズ・インコーポレイテッド | 編んでない強化された中空糸膜 |
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JP2012007275A (ja) * | 2010-05-28 | 2012-01-12 | Unitika Ltd | 複合不織シートおよびその製造方法 |
JP2012001854A (ja) * | 2010-06-18 | 2012-01-05 | Unitika Ltd | 複合不織シートおよびその製造方法 |
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CN102560708B (zh) * | 2011-12-06 | 2014-09-03 | 绍兴文理学院 | 一种具有岛屿型截面的热熔聚酯单丝生产工艺 |
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ITBO20120472A1 (it) * | 2012-09-06 | 2014-03-07 | Sailmaker Internat S P A | Griglia reticolare multiassiale |
DE102015005160B4 (de) * | 2015-04-16 | 2019-04-18 | Saint-Gobain Adfors | Verfahren und Vorrichtung zum Herstellen von Fadengelegen |
CA2943102A1 (en) | 2015-09-25 | 2017-03-25 | Volm Companies, Inc. | Synthetic mesh reinforced multilayer material and bags made therefrom |
EP3184682B1 (en) * | 2015-12-21 | 2018-09-19 | Saint-Gobain Adfors | Tridirectional laid scrims for reinforcement purposes |
JP7095967B2 (ja) * | 2017-09-27 | 2022-07-05 | 宇部エクシモ株式会社 | 複合繊維及び成形体 |
CN108950879A (zh) * | 2018-08-21 | 2018-12-07 | 珠海水丝新材料有限公司 | 一种超吸水经纬无纺布的制作方法 |
JP7035911B2 (ja) * | 2018-08-31 | 2022-03-15 | 日東紡績株式会社 | 四軸組布及び積層物 |
US11702779B2 (en) * | 2019-01-30 | 2023-07-18 | Mitsui Chemicals, Inc. | Spunbonded non-woven fabric, sanitary material, and method of manufacturing spunbonded non-woven fabric |
JP7588316B2 (ja) | 2020-03-16 | 2024-11-22 | パナソニックIpマネジメント株式会社 | 繊維メッシュシートとその製造方法、及び繊維メッシュシートを用いた細胞培養チップ |
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JPS6059121A (ja) * | 1983-09-13 | 1985-04-05 | Chisso Corp | 熱接着性複合繊維の製造方法 |
KR890701822A (ko) * | 1987-11-30 | 1989-12-21 | 하기하라 구니아끼 | 부직포 및 그 제조장치 |
JPH01306664A (ja) * | 1988-06-06 | 1989-12-11 | Polymer Processing Res Inst | 糸の多軸不織布とその製法並びに装置 |
JP2736017B2 (ja) * | 1994-10-21 | 1998-04-02 | 鐘紡株式会社 | 糸条を緯とする広幅経緯積層布体の製造方法 |
JP3837848B2 (ja) * | 1997-06-30 | 2006-10-25 | 日東紡績株式会社 | 複合材用強化繊維基材及びその製造方法 |
US6284680B1 (en) * | 1998-11-17 | 2001-09-04 | Japan Vilene Company | Nonwoven fabric containing fine fibers, and a filter material |
JP4449129B2 (ja) * | 1999-12-21 | 2010-04-14 | 日東紡績株式会社 | 不織布及びユニットタイル |
JP4696431B2 (ja) * | 2001-09-28 | 2011-06-08 | 日東紡績株式会社 | 補強シート及び補強方法 |
JP4084955B2 (ja) * | 2002-05-09 | 2008-04-30 | 宇部日東化成株式会社 | 繊維強化熱可塑性樹脂製線状ないしはロッド状複合材およびその製造方法 |
JP3853774B2 (ja) * | 2003-10-01 | 2006-12-06 | 倉敷紡績株式会社 | 補強用不織基布 |
-
2004
- 2004-03-30 JP JP2004100404A patent/JP4459680B2/ja not_active Expired - Fee Related
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2005
- 2005-03-29 CA CA 2561911 patent/CA2561911A1/en not_active Abandoned
- 2005-03-29 WO PCT/JP2005/005874 patent/WO2005095701A1/ja active Application Filing
- 2005-03-29 EP EP05727361A patent/EP1739220A4/en not_active Withdrawn
- 2005-03-29 US US10/599,400 patent/US20080045109A1/en not_active Abandoned
- 2005-03-29 CN CNB2005800063264A patent/CN100529225C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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WO2005095701A1 (ja) | 2005-10-13 |
CN1926272A (zh) | 2007-03-07 |
EP1739220A4 (en) | 2008-04-02 |
JP2005281924A (ja) | 2005-10-13 |
CA2561911A1 (en) | 2005-10-13 |
EP1739220A1 (en) | 2007-01-03 |
US20080045109A1 (en) | 2008-02-21 |
CN100529225C (zh) | 2009-08-19 |
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