EP1491664A1 - Verfahren zur Herstellung von dünnen Polyester-Hohlfasern sowie dünne Polyester-Hohlfasergarne - Google Patents

Verfahren zur Herstellung von dünnen Polyester-Hohlfasern sowie dünne Polyester-Hohlfasergarne Download PDF

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Publication number
EP1491664A1
EP1491664A1 EP20030013449 EP03013449A EP1491664A1 EP 1491664 A1 EP1491664 A1 EP 1491664A1 EP 20030013449 EP20030013449 EP 20030013449 EP 03013449 A EP03013449 A EP 03013449A EP 1491664 A1 EP1491664 A1 EP 1491664A1
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EP
European Patent Office
Prior art keywords
fine hollow
quenching
polyester
filaments
orifice
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.)
Withdrawn
Application number
EP20030013449
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English (en)
French (fr)
Inventor
Zo-Chun Jen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nan Ya Plastics Corp
Original Assignee
Nan Ya Plastics Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nan Ya Plastics Corp filed Critical Nan Ya Plastics Corp
Priority to EP20030013449 priority Critical patent/EP1491664A1/de
Priority to US10/602,634 priority patent/US20040262806A1/en
Publication of EP1491664A1 publication Critical patent/EP1491664A1/de
Withdrawn legal-status Critical Current

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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
    • D01D5/08—Melt spinning methods
    • D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
    • 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
    • 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

  • This invention relates to a manufacturing method of fine hollow polyester filaments and fine hollow filaments made from the same and fine hollow polyester yarns.
  • Polyester fiber is mostly used among three major synthetic fiber owing to its good mechanical features, dyeability and low cost.
  • Manufacturing process of polyester filament is approximately as follows: polycondensation reaction of terephthalic acid and ethylene glycol to form polyester chip or melt mass, after melting, extrusion, measuring and throughput, then quenching, oil finishing and winding up. In this process, the quenching effect is very important to physical property and uniformity of yarn.
  • cross flow quenching system (as shown in figure 1). Radial out-to-in flow quenching system (as shown in figure 2). Radial in-to-out flow quenching system (as shown in figure 3).
  • the cross flow quenching system is mostly used, the radial out-to-in flow quenching system and radial in-to-out flow quenching system are frequently applied in staple, and partly used in industrial yarn production.
  • polyester fiber has multiple merits, it lacks the merits such as softness and insulation of natural cotton and wool, while fine hollow polyester filament is generated in this way.
  • Fine hollow polyester filament features in hand fineness, light weight and heat preservation instead of the hand harshness of general thick hollow polyester filament.
  • the fine hollow polyester filaments produced in this invention adopts radial in-to-out flow quenching system at melt spinning, having d.p.f.(denier per filament) 0.3 to 2.5d, uster half inert value (u% 1/2 inert) less than 0.3%, variation of thermal stress in spindles less than 4%, hollow degree from 25 to 40%.
  • a fine hollow polyester yarn which is produced by draw-twist texturing, air -twist texturing or one-stage direct spinning and drawing the fine hollow polyester filaments manufactured by the above manufacturing method for fine hollow polyester filaments to get fine hollow polyester yam having d.p.f 0.2 to 1.0d, hollow degree 25 to 40% in excellent dyeability and flat surface of fabrics woven or knitted from said yarn.
  • Polyester hollow yarn is made into cloth and fabric to reach the purpose of light weight and thermal insulation, which is mostly popular in the market, when general polyester hollow yarn of d.p.f. greater than 1.5d is used in cloth and fabric, it feels rough and harsh in hand. There are some stripes on the fabric surface due to uneven quenching, and the use range is restricted.
  • Reducing d.p.f. and increasing hollow degree can be adopted to achieve the feature of light weight and thermal insulation as well as softness in polyester hollow yarn.
  • generally there are two methods in reducing d.p.f. one is maintaining total throughput of polyester melt in constant amount and increasing the number of orifice on spinneret, and the other is maintaining total the number of orifice on spinneret and reducing total throughput of polyester melt.
  • cross flow quenching system For the quenching and blowing mode of polyester filament melt spinning quenching and blowing, cross flow quenching system is mainly adopted and supported with less out-to-in flow quenching system, of course, the quenching and blowing mode for melt spinning of existing fine hollow polyester filament also mainly use these two modes, however, if cooled with the quenching unit of cross flow quenching system, it will lead to large quenching difference between the filament tow with single face exposed to the quenching air near the wind front and the filament tow far away from wind front.
  • the length of protective delay shroud recommended for the quenching method used in European patent No.0 860 523A2, is from 10mm to 30mm, the blowing length for the first section quick quenching zone is 80mm to 120mm, and the blowing length for the second section slow quenching zone is 150mm to 350mm.
  • Its hollow degree is 40% to 80%, with the feature of non-deformable hollow after post processing.
  • Radial out-to-in flow quenching system is designed to produce polyester industrial yarn with d.p.f. 1.1 to 22.2d, and fails to disclose the manufacturing process for fine hollow polyester filament.
  • polyester polymer with specific intrinsic viscosity and melting point is uniformly throughput from spinneret with a multi-layer annularly arranged orifices (the diameter difference of outermost layer orifice and the innermost orifice is set at ⁇ 20mm), quenched by cylindrical quenching air tube with quenching air in-to-out radial blowing, wound and packaged into filament package to accomplish this invention.
  • This can increase the number in unit spinneret area and hollow degree of filament, uniformly distribute the hollow degree among single filament, reduce its d.p.f., and obtains fine hollow polyester filaments of excellent dyeability.
  • the other object of this invention is to provide a radial out-to-in flow quenching system of enabling uniform quenching for filament tow, to produce fine hollow polyester filament.
  • the length of protective delay shroud below spinneret is preferably set at 2 to 8060 ⁇ throughput ⁇ g/min ⁇ ⁇ ( No. of filaments) 2 ⁇ mm ⁇ , when the length of protective delay shroud is less than 2(mm), the quenchingair will influence surface temperature of spinneret, deteriorate production status; when the length of protective delay shroud is over 8060 ⁇ throughput ⁇ g/min ⁇ ⁇ ( No.
  • the uster half inert value (u% 1/2 inert) of fine hollow polyester filament becomes larger, even if increasing quenching air speed, it fails to meet the requirement for fine hollow polyester filament with expected hollow degree of 25 to 40%, uster half inert value( u% 1/2 inert) less than 0.3%, and the finished fabric manufactured from the fine hollow polyester filament after draw texturing process, has poor dyeability itself, dyeing streak in woven fabric.
  • the diameter difference of outermost layer orifice and the innermost layer orifice is set less than 20 mm; If the diameter difference of outermost layer orifice and the innermost layer orifice is greater than 20 mm, it will lead to larger quenching air difference between the inner and external filament tow, and large difference in physical property and hollow degree among monofilament inside filament tow, and fabric in excellent dyeability can not be achieved.
  • the distance between the diameter of innermost orifice layout and the diameter of quenching air tube is at least 12 and less than 33mm.
  • the quenching air tube used in this invention is preferably set as 15 to 40 cm. when the length of quenching air tube is less than 15cm, the filament tow will be adhered and broken due to insufficient quenching; when the length of quenching air tube is greater than 40cm, turbulent flow will occur and deteriorate uster half inert value (u% 1/2 inert);
  • the quenching air tube used in this invention is a cylindrical shape, can be manufactured by multilayer cellulose or multilayer wire netting or filter sintered from metal or ceramic, or multilayer perforated plate ⁇
  • the filament tow can be obtained by blowing quenching airuniformly out in a way of radial in-to-out from fine holes of said quenching air tube.
  • the velocity of quenching air in this invention is preferably set as 0.2 m/sec to 0.6 cm/sec. when the velocity of quenching air is less than 0.2 m/min, the filament tow will be adhered and broken due to insufficient quenching, also accompanied by greater uster half inert value (u% 1/2 inert) and smaller hollow degree. When the velocity of quenching air is greater than0.6 cm/sec, it fails to reduce the uster half inert value and do no evident improvement on uster half inert value, causing super quenching to break the filament tow.
  • the orifice density of spinneret layout is set as 7-15 orifices per square centimeter.
  • the orifice density ⁇ as shown in figure 5 ⁇ is defined as the number of throughput orifices between D 2 ⁇ the diameter of outermost layer orifice ⁇ and D 1 ⁇ the diameter of inmost layer orifice ⁇ divided by area between D 2 and D 1 , i.e. the number of orifices (between D 2 and D 1 ) ⁇ 4/ ⁇ ( D 2 2 - D 1 2 ).
  • the inherent viscosity (IV) of polyester chip used in this invention is between 0.5 to 0.7, after melting, the polyester chip is extruded from spinneret to spin to form filament, then is subject to drawing, quenching, oil finishing and winding to get the fine hollow polyester filament.
  • the fine hollow polyester filament produced has elongation at break between 70% to 180%, d.p.f. of 0.3 to 2.5, and hollow degree of 25 to 40% ⁇ uster half inert value (u% 1/ 2 inert) less than 0.3%; variation of thermal stress in spindles less than 4%. Consequently, fine hollow polyester yarn with excellent dyeability and d.p.f. of 0.2 to 1.0, hollow degree of 25 to 40% can be achieved after draw texturing such as draw twisting, air twisting or one stage direct spin drawing process (spin draw).
  • quenching air is blown from one side to the filament tow throughput from the spinneret to cool said filament tow.
  • quenching air is blown radially from the wall of quenching air tube that surround the filament tow throughput from the spinneret, quenching air is blown to the center portion of said filament tow all around from said filament tow to cool said filament tow.
  • quenching air is blown radially from the wall of quenching air tube that locate at the center portion of the filament tow throughput from the spinneret, quenching air is blown to the surrounding of said filament tow from the center portion of said filament tow to cool said filament tow.
  • the quenching air tube has length Lq and outer diameter Do.
  • the fine hollow polyester filament 10 manufactured from the process of the radial in-to-out flow quenching system shown in Fig. 3 ⁇ is drawn by the draw twister shown in Fig. 6 to get fine hollow polyester yam 14.
  • quenching air is blown radially from the wall of quenching air tube that locate at the center portion of the filament tow throughput from the spinneret, quenching air is blown to the surrounding of said filament tow from the center portion of said filament tow to cool said filament tow.
  • radial in-to-out flow quenching system (as shown in figure 3) is used in example of this invention
  • cross flow quenching system (as shown in figure 1) is used in comparative example 1
  • radial out-to-in flow quenching system (as shown in figure 2) is used in comparison example 2.
  • Uster half inert value (u% 1/2 inert), hollow degree and variation of thermal stress in spindles of the fine hollow polyester filaments obtained in example 1 of this invention evidently superior to that of comparative example 1 and 2.
  • table 2 After draw texturing process, it is known from table 2 that the fine hollow polyester yarn obtained in example 1 has excellent dyeability and no dyeing streak in woven fabric.
  • Example 2 under the processing conditions such as: the length of a protective delay shroud of 8 mm, the length of quenching air tube of 35 cm, fine hollow polyester filaments of d.p.f. 0.8 , uster half inert value (u% 1/2 inert) 0.29%, hollow degree 30%, and variation of thermal stress in spindles 3.4% can be obtained.
  • the fine hollow polyester yarn of d.p.f..052 hollow degree 29% and no dyeing streak in woven fabric can be obtained.

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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)
EP20030013449 2003-06-23 2003-06-23 Verfahren zur Herstellung von dünnen Polyester-Hohlfasern sowie dünne Polyester-Hohlfasergarne Withdrawn EP1491664A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20030013449 EP1491664A1 (de) 2003-06-23 2003-06-23 Verfahren zur Herstellung von dünnen Polyester-Hohlfasern sowie dünne Polyester-Hohlfasergarne
US10/602,634 US20040262806A1 (en) 2003-06-23 2003-06-25 Manufacturing method of fine hollow polyester filaments, fine hollow polyester filaments made from the same and fine hollow polyester yarns

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20030013449 EP1491664A1 (de) 2003-06-23 2003-06-23 Verfahren zur Herstellung von dünnen Polyester-Hohlfasern sowie dünne Polyester-Hohlfasergarne
US10/602,634 US20040262806A1 (en) 2003-06-23 2003-06-25 Manufacturing method of fine hollow polyester filaments, fine hollow polyester filaments made from the same and fine hollow polyester yarns

Publications (1)

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EP1491664A1 true EP1491664A1 (de) 2004-12-29

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EP20030013449 Withdrawn EP1491664A1 (de) 2003-06-23 2003-06-23 Verfahren zur Herstellung von dünnen Polyester-Hohlfasern sowie dünne Polyester-Hohlfasergarne

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EP (1) EP1491664A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108950709A (zh) * 2017-05-19 2018-12-07 中国石油化工股份有限公司 一种制备中空纤维膜的装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6822979B2 (ja) * 2015-05-20 2021-01-27 ビーエイエスエフ・ソシエタス・エウロパエアＢａｓｆ Ｓｅ Ｔｐｕ製の非常に細いチューブとその製造方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5407621A (en) * 1991-01-29 1995-04-18 E. I. Du Pont De Nemours And Company Process for preparing polyester fine filaments
US5585182A (en) * 1986-01-30 1996-12-17 E. I. Du Pont De Nemours And Company Process for polyester fine hollow filaments
EP0860523A2 (de) * 1997-02-20 1998-08-26 Teijin Limited Hohle Polyesterfasern und diese enthaltende Textilien
EP0957187A2 (de) * 1998-05-14 1999-11-17 Ems-Inventa Ag Vorrichtung und Verfahren zur Herstellung von Mikrofilamenten von hoher Titer-Gleichmässigkeit aus thermoplastischen Polymeren

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5585182A (en) * 1986-01-30 1996-12-17 E. I. Du Pont De Nemours And Company Process for polyester fine hollow filaments
US5407621A (en) * 1991-01-29 1995-04-18 E. I. Du Pont De Nemours And Company Process for preparing polyester fine filaments
EP0860523A2 (de) * 1997-02-20 1998-08-26 Teijin Limited Hohle Polyesterfasern und diese enthaltende Textilien
EP0957187A2 (de) * 1998-05-14 1999-11-17 Ems-Inventa Ag Vorrichtung und Verfahren zur Herstellung von Mikrofilamenten von hoher Titer-Gleichmässigkeit aus thermoplastischen Polymeren

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108950709A (zh) * 2017-05-19 2018-12-07 中国石油化工股份有限公司 一种制备中空纤维膜的装置
CN108950709B (zh) * 2017-05-19 2020-12-18 中国石油化工股份有限公司 一种制备中空纤维膜的装置

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