EP2221400B1 - Quadratisch-analoge Vierloch-Hohlklammerfaser - Google Patents

Quadratisch-analoge Vierloch-Hohlklammerfaser Download PDF

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Publication number
EP2221400B1
EP2221400B1 EP20090153464 EP09153464A EP2221400B1 EP 2221400 B1 EP2221400 B1 EP 2221400B1 EP 20090153464 EP20090153464 EP 20090153464 EP 09153464 A EP09153464 A EP 09153464A EP 2221400 B1 EP2221400 B1 EP 2221400B1
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Prior art keywords
fiber
square
staple fiber
analogous
cross
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English (en)
French (fr)
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EP2221400A1 (de
Inventor
Kuo-Chung Wu
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Shinkong Synthetic Fibers Corp
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Shinkong Synthetic Fibers Corp
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Priority to EP20090153464 priority Critical patent/EP2221400B1/de
Priority to TW99104050A priority patent/TWI377271B/zh
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/26—Formation of staple fibres
    • 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
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters

Definitions

  • the present invention relates to a hollow cross section synthetic fiber.
  • the present invention relates to a square-analogous staple fiber wherein the cross section thereof contains four hollow holes.
  • the said staple fiber has the advantages of high hollowness ratio, high elastic recovery after water-washing, high resilience, high thermal retentivity and higher tension and strength, etc.
  • Most synthetic and cellulosic fibers are produced by "extrusion"-forcing a thick, viscous liquid through the tiny orifices of a spinneret to form continuous filaments of semi-solid polymer.
  • the spinnerets used in the production of most fibers are similar, in principle, to a bathroom shower head.
  • a spinneret may have from one to several hundred orifices.
  • the liquid polymer is converted first to a rubbery state and then solidified. This process of extrusion and solidification of filaments is called spinning.
  • the hollow fibers are single-hole fibers.
  • different types of cross sections hollow fibers such as triangular single-hole fibers, multiple-hole (four holes, seven holes, etc.) hollow fibers, multiple-holes circular fibers, etc. are continuously developed.
  • EP 0067684A and JP 57-210013A disclose a nonround four-hole hollow crimped polyester fiber having 15 to 35% hollowness ratio.
  • EP 0067684A and JP 57-210013A disclose a nonround four-hole hollow crimped polyester fiber having 15 to 35% hollowness ratio.
  • only the fibers having near round void cross sections which may be obtained.
  • the elastic recovery of the said fiber is not good.
  • JP 2003-055838A discloses a polyester fiber, which comprises a small amount of the third component such as polylactic acid, etc., and has 3 to 8 holes and 25 to 60% hollowness ratio.
  • the third component such as polylactic acid, etc.
  • a lower spinning temperature is required before spinneret extrusion to, thereby maintaining the multi-hole state.
  • the defective fraction of the said fiber would be increased.
  • the design price of the spinneret of the said multi-hole hollow fiber is overly high and the said spinneret is too complex to manage.
  • CN 2418139Y discloses a fiber having four-hole round cross section.
  • a circular or round-like multi-hole hollow fiber may be obtained.
  • the strength and the elastic recovery of the fabric thereof are unfavorable.
  • the present invention provides a square-analogous polyester staple fiber having four hollow holes.
  • the staple fiber of the present invention shows not only the desired features of the hollow fiber but also excellent spinning properties and elastic recovery after water-washing. Hence, the fiber of the present invention has advantageous competitiveness over the conventional arts.
  • the present invention provides a square-analogous four-hole hollow polyester staple fiber.
  • a square-analogous four-hole hollow staple fiber refers to a staple fiber having a four-hole rectangular or square-analogous cross section, for example, as shown in figures 2 and 3 .
  • the said square-analogous staple fiber fulfills the following requirements:
  • the cross section of the square-analogous hollow staple fiber of the present invention is rectangular.
  • the square-analogous hollow staple fiber of the present invention comprises four hollow holes.
  • the square-analogous hollow staple fiber of the present invention has the advantages of high hollowness ratio, high elastic recovery after water-washing, high resilience, high thermal retentivity and higher tension and strength, etc.
  • the cross section of the fiber of the present invention possesses a square-analogous structure
  • the resilient force is high after the pressure relief from the press or twist of the fiber.
  • the inside cross structure thereof increases the resilient force and the recovery of the claimed fiber. Therefore, the said recovery is better than that of the fiber having circular hollow cross section and therefore the resilience of the product of the fiber of the present invention is better than the conventional technologies.
  • polyesters and the modified polyesters thereof may be used as the raw material of the square-analogous hollow staple fiber of the present invention.
  • the square-analogous hollow staple fiber of the present invention is characterized in that the shape factor of the cross section (A/B) of the said fiber ranges from about 1.10 to about 1.414.
  • the shape factor of the cross section of the said fiber is from about 1.16 to about 1.414.
  • the square-analogous hollow staple fiber of the present invention is characterized in that the hollowness ratio of the staple fiber of the present invention ranges from about 16% to about 35%.
  • the hollowness ratio of the fiber is greater than 35%, the fiber wall thereof may crack, the defective fraction of the polyester extrusion would be increased, and thus is unfavorable for the spinning process.
  • the hollowness ratio of the fiber is less than 16%, the hollowness ratio of the fiber is decreased, the bulk of the fiber would be significantly decreased, and the thermal retentivity of the fiber would also be decreased.
  • the hollowness ratio of the hollow fibers is in the range of about 20% to about 30%.
  • the fineness of the square-analogous hollow staple fiber of the present invention is greater than about 2 deniers, preferably from about 3 to about 25 deniers and most preferably from about 3 to about 20 deniers.
  • the length of the square-analogous hollow staple fiber of the present invention which generally covers all the lengths of the staple fibers, ranges from about 22 to about 100 mm, preferably from about 38 to about 90 mm.
  • the crimp number of the square-analogous hollow staple fiber of the present invention ranges from 4 to 10 per 25 mm.
  • the crimps of the square-analogous hollow staple fiber of the present invention may be helical crimps.
  • the crimps of the square-analogous hollow staple fiber of the present invention may be saw tooth crimps.
  • the pressure recovery of the square-analogous hollow staple fiber of the present invention is greater than about 90%.
  • the square-analogous hollow staple fiber of the present invention may be produced by the process comprising the steps of melting and extruding the polymer, such as PET, through a four-hole hollow spinneret to form filaments; cooling and solidifying the filaments; drawing and thermosetting the filaments; finishing and crimping the filaments; cutting the filaments to desired length; drying and packaging the filaments.
  • the polymer such as PET
  • the square-analogous hollow staple fiber of the present invention may be produced by the process comprising the steps of melting and extruding the polymer, such as PET, through a four-hole hollow spinneret to form filaments; cooling and solidifying the filaments; drawing and thermosetting the filaments; finishing and crimping the filaments; cutting the filaments to desired length; drying and packaging the filaments.
  • the cooling medium is preferably air, which flows from various angles such as perpendicularly or in parallel to the thread direction and is trained onto the filaments.
  • the draw process is to convert relatively weak spun fibers to those with greater molecular orientation and the resulting greater strength.
  • the square-analogous hollow staple fiber of the present invention may be drawn by a fiber draw stand to desired deniers.
  • thermosetting step is required to eliminate the residual stress within the fiber, to accelerate the crystallization of the fiber and to improve the stability of the fiber.
  • a thermosetting roller may be used for the thermosetting step wherein a high-pressure vapor is ventilated and then the treated fibers are cooled by a cooling roller to room temperature.
  • the crimping step is carried out to increase the fiber cohesion and improve the hand feeling thereof.
  • the fiber of the present invention may pass through a dancing roller to maintain a constant tension and then pass into a crimper to crimp the fiber.
  • the length of the staple fiber depends on the kinds of the fiber.
  • square-analogous four-hole hollow staple fiber of the present invention may be cut by a cutter and, as exemplified above, they ranges from about 22 to about 100 mm, preferably from about 38 to about 90 mm.
  • the size and shape of the spinneret holes determine the filament's cross sectional shape.
  • the square-analogous four-hole hollow staple fiber of the present invention may be obtained by a spinneret having 4 sets of T-shaped slits, for example, as shown in figure 4 .
  • the square-analogous hollow staple fiber of the present invention may be used as the material of air filtration, sanitary articles such as diapers, wipers, etc., sleeping accommodations such as mattresses, etc., packaging, building engineering, soil-water conservation, etc.
  • the cross section of a monofilament is taken a photograph by using an optical microscope at a magnification of 400 times, thereby measure the 1/2 diagonal length of a monofilament with squared cross section (i.e., A) and 1/2 width of a monofilament with squared cross section (i.e., B).
  • the cross section of a monofilament is taken a photograph by using an optical microscope at a magnification of 400 times and then measure 20 groups of the total areas of the voids of filaments and the cross section of a monofilament, thereby calculate the average of the ratios thereof.
  • the polyester polymer is melted and extruded through a designed four-hole hollow spinneret, the filaments are solidified by cooling at a rate of 40 nm/hr under the cold air supplied, and the filaments are formed at a spinning rate of 700 m/min. After the yarns are drawn at a total drawing ratio of 3.0 times, set those yarns at a temperature of 160°C, cut the yarns and package them. After the said processes, the four-hole square-analogous hollow staple fiber of 7 d x34 mm may be obtained. The properties of the said fiber are listed in the following Tables 1 and 2.
  • the polyester polymer is melted and extruded through a designed four-hole hollow spinneret, the yarns are solidified by cooling at a rate of 40 nm/hr under the cold air supplied, and the filaments are formed. After the yarns are drawn at a total drawing ratio of 3.5 times, set those yarns at a temperature of 160°C, cut the yarns and package them. After the said processes, the four-hole square-analogous hollow staple fiber of 7 d x64 mm may be obtained.
  • Example 2 In accordance with the same procedures of Example 1, a round hollow spinneret is used to extrude the melt polyester polymer and a single-hole synthetic hollow staple fiber of 7 d x34 mm may be obtained.
  • the properties of the said fiber are listed in the following Tables 1 and 2.
  • Table 1 Properties of the staple fiber of the present invention and the fiber of the prior art Items
  • Example 1 Comparative Example 1 Deniers 7 7 Strength of Fiber 4.3 3.5 Length 34 34 Hollowness ratio 29 30 Crimp Numbers 8 4 Compression Rate 47 45 Compression Recovery 97 85 Cross Section Shape Factor Holding Rate 1.38 1.0 Spinning Property excellent fair Cross section ⁇
  • Table 2 Comparative Data of the Elastic Recovery After Water-washing Times of the Water-washing 0 1 2 3 4 5 6 7 8 9 10
  • Example 1 (the recovery height of the fiber, cm) 11.4 10.7 10.3 9.8 9.5 9.4 9.2 9 8.8 8.6 8.5
  • Comparative Example 1 (the recovery height of the fiber, cm) 10.3 9.3 8.7 8.2 8.2 8 8 8 7.9 7.5 7.3

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Artificial Filaments (AREA)
  • Nonwoven Fabrics (AREA)

Claims (10)

  1. Quadratisch-analoge hohle Polyester-Stapelfaser mit einem Vierloch-Querschnitt, dadurch gekennzeichnet, dass die Faser die folgenden Voraussetzungen erfüllt: 1 , 10 ≤ F ⁢ o ⁢ r ⁢ m ⁢ f ⁢ a ⁢ k ⁢ t ⁢ o ⁢ r d ⁢ e ⁢ s q ⁢ u ⁢ e ⁢ r ⁢ s ⁢ c ⁢ h ⁢ n ⁢ i ⁢ t ⁢ t ⁢ s d ⁢ e ⁢ r F ⁢ a ⁢ s ⁢ e ⁢ r A / B ≤ 1 , 414
    Figure imgb0006
     16 % ≤ H ⁢ o ⁢ h ⁢ l ⁢ h ⁢ e ⁢ i ⁢ t ⁢ s ⁢ v ⁢ e ⁢ r ⁢ h ⁢ a ⁢ l ⁢ t ⁢ n ⁢ i ⁢ s d ⁢ e ⁢ r F ⁢ a ⁢ s ⁢ e ⁢ r ≤ 35 %
    Figure imgb0007
    wobei A die Hälfte der diagonalen Länge des Querschnitts eines Monofilaments repräsentiert und B die Hälfte der Breite eines Querschnitts eines Monofilaments repräsentiert, und
    wobei die Rückverformung der Stapelfaser nach Kompression größer als ca. 90% ist.
  2. Quadratisch-analoge hohle Stapelfaser nach Anspruch 1, wobei deren Querschnitt quadratisch ist.
  3. Quadratisch-analoge hohle Stapelfaser nach Anspruch 1, wobei deren Querschnitt vier gleichmäßig verteilte Löcher aufweist.
  4. Quadratisch-analoge hohle Stapelfaser nach einem der Ansprüche 1 bis 3, wobei die Feinheit eines einzelnen Filaments der Stapelfaser von ca. 2 bis ca. 25 Denier beträgt.
  5. Quadratisch-analoge hohle Stapelfaser nach Anspruch 4, wobei die Feinheit eines einzelnen Filaments der Stapelfaser von ca. 3 bis ca. 20 Denier beträgt.
  6. Quadratisch-analoge hohle Stapelfaser nach einem der Ansprüche 1 bis 4, wobei die Länge der Stapelfaser von ca. 22 bis ca. 100 mm beträgt.
  7. Quadratisch-analoge hohle Stapelfaser nach einem der Ansprüche 1 bis 4, wobei das Hohlheitsverhältnis von ca. 20% bis ca. 30% beträgt.
  8. Quadratisch-analoge hohle Stapelfaser nach einem der Ansprüche 1 bis 4, wobei die Anzahl der Kräuselungen der Stapelfaser von ca. 4 bis ca. 10 pro 25 mm beträgt.
  9. Quadratisch-analoge hohle Stapelfaser nach einem der Ansprüche 1 bis 4, wobei die Kräuselungen der Stapelfaser helikale Kräuselungen sind.
  10. Quadratisch-analoge Stapelfaser nach einem der Ansprüche 1 bis 4, wobei die Kräuselungen der Stapelfaser Sägezahn-Kräuselungen sind.
EP20090153464 2009-02-23 2009-02-23 Quadratisch-analoge Vierloch-Hohlklammerfaser Active EP2221400B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20090153464 EP2221400B1 (de) 2009-02-23 2009-02-23 Quadratisch-analoge Vierloch-Hohlklammerfaser
TW99104050A TWI377271B (en) 2009-02-23 2010-02-10 Squared-analogous four-hole hollow staple fiber and process for preparing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20090153464 EP2221400B1 (de) 2009-02-23 2009-02-23 Quadratisch-analoge Vierloch-Hohlklammerfaser

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EP2221400A1 EP2221400A1 (de) 2010-08-25
EP2221400B1 true EP2221400B1 (de) 2012-05-23

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Publication number Priority date Publication date Assignee Title
KR101446622B1 (ko) * 2013-02-04 2014-10-06 한국생산기술연구원 다중 분할 중공사, 다중 분할 중공사 형성용 슬릿을 포함하는 방사노즐 및 그를 이용한 다중 분할 중공사의 제조방법
KR101446623B1 (ko) * 2013-02-07 2014-10-06 한국생산기술연구원 다분할 중공노즐, 그를 이용한 다분할 중공섬유의 제조방법, 그로부터 얻은 다분할 중공섬유 및 그 용도
KR101387465B1 (ko) * 2013-05-16 2014-04-29 미정화학(주) 이형단면의 다분할 방사노즐, 그로부터 얻어진 이형단면의 다분할 중공사 및 그를 이용한 용도
CN104389043B (zh) * 2014-10-15 2016-06-08 浙江恒逸高新材料有限公司 一种保暖发热纤维及其加工方法与应用
CN105177739A (zh) * 2015-08-07 2015-12-23 东华大学 一种双组份圆中空十字异形高吸湿复合纤维及其生产方法
TWI705163B (zh) * 2019-06-21 2020-09-21 勤倫有限公司 彈性膜材之切割方法及彈性絲
JP2021121698A (ja) * 2020-01-30 2021-08-26 カール・フロイデンベルク・カー・ゲー 方形の中空繊維

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54154595A (en) * 1978-05-22 1979-12-05 Unitika Ltd Novel carrier for fixing physiologically active substance
JPS57210013A (en) 1981-06-12 1982-12-23 Du Pont Modified hollow polyester fiber for saft fiber padding
CN2418139Y (zh) 2000-03-23 2001-02-07 上海第七化学纤维厂 四孔中空三维卷曲合成短纤维
JP4574911B2 (ja) 2001-08-16 2010-11-04 帝人ファイバー株式会社 ポリエステル系中空捲縮繊維およびその製造方法
TWI242612B (en) * 2001-10-29 2005-11-01 Ind Tech Res Inst Method of fabricating a non-hollow fiber having a regular polygonal cross-section
DE602006012957D1 (de) * 2006-07-12 2010-04-29 Ind Tech Res Inst Fasern, Textilerzeugnis mit hoher Luftundurchlässigkeit und entsprechendes Herstellungsverfahren

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EP2221400A1 (de) 2010-08-25
TW201031774A (en) 2010-09-01

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