US20200216980A1 - High-strength polyethylene terephthalate yarn and method for producing the same - Google Patents

High-strength polyethylene terephthalate yarn and method for producing the same Download PDF

Info

Publication number
US20200216980A1
US20200216980A1 US16/640,771 US201816640771A US2020216980A1 US 20200216980 A1 US20200216980 A1 US 20200216980A1 US 201816640771 A US201816640771 A US 201816640771A US 2020216980 A1 US2020216980 A1 US 2020216980A1
Authority
US
United States
Prior art keywords
spinning
polyethylene terephthalate
pet
yarn
intrinsic viscosity
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.)
Abandoned
Application number
US16/640,771
Other languages
English (en)
Inventor
Ki Sub Lim
II Chung
Sung Ho Park
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.)
Kolon Industries Inc
Original Assignee
Kolon Industries Inc
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 Kolon Industries Inc filed Critical Kolon Industries Inc
Assigned to KOLON INDUSTRIES, INC. reassignment KOLON INDUSTRIES, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHUNG, IL, LIM, Ki Sub, PARK, SUNG HO
Publication of US20200216980A1 publication Critical patent/US20200216980A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • D01D5/084—Heating 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
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/06—Load-responsive characteristics
    • D10B2401/063—Load-responsive characteristics high strength

Definitions

  • the present invention relates to a polyethylene terephthalate yarn and a method for producing the same, and more particularly to a polyethylene terephthalate yarn having higher strength than a conventional polyethylene terephthalate yarn and a method for producing the same.
  • PET industrial polyethylene terephthalate
  • the method of producing a PET yarn includes a spinning process of forming a multifilament and a process of drawing the multifilament at a predetermined draw ratio, wherein the spinning process includes melting a PET chip, discharging the PET melt through a nozzle of a spinning pack, and converging the filaments in a solidified state formed through cooling after the PET melt is discharged through the nozzle, thereby forming a multifilament.
  • the spinning speed and the draw ratio have a trade-off relationship
  • increasing the spinning speed ultimately limits the draw ratio that can be applied in the drawing step. That is, if the spinning speed is increased to 1500 m/min or more in order to improve the dimensional stability of the PET yarn, the draw ratio that can be applied in the drawing step is ultimately lowered to 2.0 or less. The lower the draw ratio, the lower the strength of the PET yarn.
  • the present invention relates to a PET yarn capable of preventing problems caused by the limitations and disadvantages of the related art as described above, and to a method for producing the same.
  • One aspect of the present invention provides a PET yarn having high strength compared to the existing PET yarn while having excellent dimensional stability.
  • Another aspect of the present invention provides a method for producing a PET yarn having high strength compared to the existing PET yarn while having excellent dimensional stability.
  • a PET yarn including 100 to 500 filaments each having fineness of 2 to 5 denier is provided, wherein the PET yarn has an intrinsic viscosity of 1.1 dl/g or more and a tensile strength of 10 g/d or more.
  • the PET yarn may have an intrinsic viscosity of 1.1 to 1.25 dl/g and a tensile strength of 10 to 10.6 g/d.
  • the PET yarn may have elongation of 3 to 6% at a 4.5 g/d load and dry heat shrinkage of 7 to 12%.
  • the PET yarn may have elongation at break of 13 to 14%.
  • the PET yarn may have elongation at break of 13.4 to 13.9%.
  • a method for producing a PET yarn including the steps of: melting a polyethylene terephthalate chip having an intrinsic viscosity of 1.4 to 1.7 dl/g to prepare a spinning melt; discharging the spinning melt through a nozzle of a spinning pack; heating the spinning melt just before discharging it from the nozzle by means of a heat source of 300 to 500° C. located immediately below the nozzle; converging a plurality of filaments formed by the discharging to form a multifilament; and drawing the multifilament, wherein a temperature of the spinning pack is maintained at 280 to 305° C.
  • a speed after drawing of 4000 to 6200 m/min and a draw ratio of 1.9 to 2.5 may be applied.
  • the distance between the nozzle and the heat source may be 5 to 50 mm.
  • the temperature of the heat source may be higher than the temperature of the spinning pack.
  • the heat source may include a hot wire.
  • the heat source may include a plurality of hot wires, and the hot wires may be respectively arranged between the filaments so as to not hinder the movement of the filaments.
  • the hot wires may be arranged at equal intervals.
  • Each of the hot wires may be arranged to be parallel to the lower surface of the nozzle.
  • the draw ratio in the drawing step may be 1.9 to 2.5.
  • the discharging step may be performed under a discharge pressure of 2400 psi or less.
  • the present invention by using a PET chip having a relatively high intrinsic viscosity (I.V.), and minimizing thermal decomposition of the polymer during the spinning process and a decrease in intrinsic viscosity (I.V. drop) resulting therefrom, it is possible to produce a PET yarn having a relatively high intrinsic viscosity (I.V.) of 1.1 dl/g or more and a relatively high tensile strength of 10 g/d or more.
  • I.V. intrinsic viscosity
  • the uniformity of mechanical properties of a large number of filaments constituting the polyester yarn can be improved.
  • FIG. 1 schematically illustrates an apparatus for producing a PET yarn according to one embodiment of the present invention.
  • FIG. 2 is an enlarged view of a portion A in FIG. 1 .
  • the present inventors found that the intrinsic viscosity (I.V.) of PET yarn is closely related to the strength of PET yarn. That is, as the intrinsic viscosity (I.V.) of the PET yarn increases, the strength of the PET yarn increases. Therefore, in order to produce a PET yarn having higher strength than a conventional PET yarn, it is required to produce a PET yarn having a higher intrinsic viscosity (I.V.) than the conventional PET yarn.
  • the spinning melt should be prepared using a PET chip having a higher intrinsic viscosity (I.V.) than the intrinsic viscosity (I.V.) of PET chips used in a conventional PET yarn manufacturing method, and (ii) thermal decomposition of polymers and a drop in intrinsic viscosity (I.V. drop) resulting therefrom should be minimized by applying a spinning temperature that is lower than the spinning temperature (i.e., the temperature of the spinning pack) that has been applied to a conventional PET yarn manufacturing method.
  • a spinning temperature that is lower than the spinning temperature (i.e., the temperature of the spinning pack) that has been applied to a conventional PET yarn manufacturing method.
  • the low fluidity of the spinning melt increases the discharge pressure and thus increases the risk of leakage at the spinning pack and damage to the spinning pack.
  • the present invention in order to produce a PET yarn having a relatively high intrinsic viscosity (I.V.) of 1.1 dl/g or more and relatively high strength of 10 g/d or more, despite using PET chips with a relatively high intrinsic viscosity (I.V.) of 1.4 to 1.7 dl/g and applying a relatively low spinning temperature of 280 to 305° C., it is possible to prevent the occurrence of a leakage phenomenon in the spinning pack and the damage to the spinning pack by providing high-temperature thermal energy from immediately below the spinneret.
  • I.V. intrinsic viscosity
  • FIGS. 1 and 2 the method for producing a PET yarn according to one embodiment of the present invention will be described in more detail.
  • An apparatus includes an extruder 110 , a spinning pack 120 , a heat source 130 , a cooling unit 140 , a converging unit 150 , a drawing unit 160 , and a winder 170 .
  • the spinning pack 120 includes main parts such as a filter, a distribution plate, a nozzle 121 , and the like, and a pack body 122 surrounding the main parts.
  • the heat source 130 may be fixed to the nozzle 121 via a bolt 131 .
  • the heat source 130 may be fixed to a spin block (not shown) surrounding the spinning pack 120 .
  • the PET chip is put into an extruder 110 , and then melted to form a spinning melt (that is, a PET melt), and the spinning melt is extruded into a spinning pack 120 .
  • a spinning melt that is, a PET melt
  • the PET chip used in the present invention has an intrinsic viscosity (I.V.) of 1.4 to 1.7 dl/g that is higher than the intrinsic viscosity (I.V.) (less than 1.4 dl/g) of the PET chip that has been previously used.
  • I.V. intrinsic viscosity
  • the intrinsic viscosity (I.V.) of the PET chip is less than 1.4 dl/g, it is impossible to produce a PET yarn having an intrinsic viscosity (I.V.) of 1.1 dl/g or more, and as a result, it is also impossible to produce PET yarns having a tensile strength of 10 g/d or more.
  • the intrinsic viscosity (I.V.) of the PET chip exceeds 1.7 dl/g, the fluidity of the spinning melt is excessively low to the extent that a high discharge pressure outside the allowable range (2400 psi or less) is required (even if the method of the present invention is applied).
  • the spinning melt delivered from the extruder 110 to the spinning pack 120 is discharged through holes in the nozzle 121 .
  • the nozzle 121 may have 100 to 500 holes, and L/D, which is a ratio of the length L and the diameter D of each hole, may be 2 to 5.
  • the spinning temperature that is, the temperature of the spinning pack 120 (more specifically, the temperature of the pack body 122 ) is maintained at 280 to 305° C.
  • the temperature of the spinning pack 120 may be measured via a temperature sensor installed in a spinning block surrounding the spinning pack 120 .
  • the spinning temperature is less than 280° C., not only is the uniformity of the spinning melt lowered, but the fluidity of the spinning melt is excessively low to the extent that a high discharge pressure outside the allowable range is required.
  • the present invention by applying a spinning temperature of 280 to 305° C. which is much lower than the spinning temperature of 310 to 320° C. that has been applied to a conventional PET yarn manufacturing method, thermal decomposition of polymers during the spinning process and a drop in intrinsic viscosity (I.V. drop) resulting therefrom can be minimized.
  • the low fluidity of the spinning melt increases the discharge pressure and thus increases the risk of a leakage phenomenon in the spinning pack 120 and damage to the spinning pack 120 .
  • the spinning melt just before being discharged from the nozzle 121 is heated by a heat source 130 located immediately below the nozzle 121 .
  • the spinning process is performed at a discharge pressure of 2400 psi or less, preferably 2350 psi or less, and more preferably 2320 psi or less.
  • the distance between the nozzle 121 and the heat source 130 may be 5 to 50 mm.
  • the temperature of the heat source 130 is higher than the temperature of the spinning pack 120 .
  • the temperature of the heat source 130 may be 300 to 500° C., preferably 320 to 490° C., and more preferably 350 to 480° C.
  • the heat source 130 may include a hot wire.
  • the heat source 130 may include a plurality of hot wires, and the hot wires may be arranged between the filaments 10 so that the spinning melt does not hinder the movement of the plurality of semi-solid filaments 10 formed while being discharged from the holes of the nozzle 121 .
  • the hot wires may be arranged at equal intervals and each of the hot wires may be arranged so as to be parallel to the bottom surface of the nozzle 121 .
  • the filaments 10 are uniformly spaced apart from the hot wires at a predetermined distance (for example, 3 to 10 mm), uniformity of physical properties between the filaments 10 may be ensured.
  • a plurality of hot wires constituting the heat source 130 are arranged at equal intervals immediately below the nozzle 121 , and instantaneously heat the spinning melt just before being discharged from the nozzle 121 .
  • I.V. intrinsic viscosity
  • a plurality of semi-solid filaments 10 formed as the spinning melt is discharged from the holes of the nozzle 121 are completely solidified while passing through the cooling unit 140 .
  • cooling air of an appropriate temperature and speed is blown into the filaments 10 .
  • the cooling behavior of the filaments 10 has a great influence on the final physical properties of the fiber.
  • the completely solidified filaments 10 are converged by the converging unit 150 to form a multifilament 20 .
  • An emulsion may be applied to the multifilament 20 at the converging unit 150 . That is, the step of forming the multifilament ( 20 ) and the step of applying the emulsion can be performed simultaneously.
  • the application of the emulsion may be performed using a MO (Metered Oiling) or RO (Roller Oiling) method.
  • the multifilament 20 formed through the converging step is drawn in the drawing unit 160 .
  • the drawing unit 160 may include first to fifth godet rollers 161 , 162 , 163 , 164 , and 165 .
  • the first godet roller 161 determines the spinning speed and the spinning draft ratio.
  • Drawing of the multifilament 20 is performed between a first godet roller 161 and a fourth godet roller 164 . That is, a draw ratio is determined by a ratio of the speed of the fourth godet roller 164 to the speed of the first godet roller 161 .
  • the fourth godet roller 164 and the fifth godet roller 165 is a relaxation section, and by imparting some relaxation to the multifilament 20 drawn by the first to fourth godet rollers 161 , 162 , 163 , and 164 , it is possible to prevent (i) excessive shrinkage of the multifilament 20 , (ii) distortion of the winder 170 , and (iii) instability of unwinding, which may be caused by contraction forces immediately after drawing.
  • the spinning speed i.e., the speed of the first godet roller 161
  • the speed after drawing i.e., the speed of the fourth godet roller 164
  • the draw ratio is 1.9 to 2.5
  • PET yarns having high dimensional stability according to the present invention produced at spinning speeds of 1500 to 3300 m/min and speeds after drawing of 4000 to 6200 m/min have elongation of 3 to 6% at 4.5 g/d load and dry heat shrinkage of 7 to 12%.
  • At least one of the second to fourth godet rollers 162 , 163 , and 164 may be provided with a heating means to perform heat treatment/heat fixing of the drawn multifilament 20 .
  • a heating means to perform heat treatment/heat fixing of the drawn multifilament 20 .
  • the number of windings on the fourth godet roller 164 the amount of time that the multifilament 20 stays in the fourth godet roller 164 can be adjusted, which allows for appropriate heat treatment/heat fixing for the drawn yarn.
  • the drawn and heat-treated multifilament 20 is wound by a winder 170 to thereby complete the PET yarn.
  • the PET yarn of the present invention includes 100 to 500 filaments each having fineness of 2 to 5 denier, and it has a relatively high intrinsic viscosity (I.V.) of 1.1 dl/g or more and a relatively high tensile strength of 10 g/d or more as mentioned above. According to one embodiment of the present invention, the PET yarn has elongation at break of 13 to 14%.
  • I.V. intrinsic viscosity
  • the high strength PET yarn of the present invention can be applied to various industrial applications such as tire cords, air bags, and the like.
  • the spinning melt just before being discharged from the holes of the nozzle was heated with hot wires at 450° C. located 10 mm away from the nozzle immediately below the nozzle. A plurality of semi-solid filaments formed as the spinning melt was discharged from the holes of the nozzle were completely solidified while passing through the cooling unit.
  • the drawing step, the heat treatment step, and the winding step were sequentially performed on the plurality of filaments formed by converging the filaments, and thereby, a PET yarn containing 250 filaments each having fineness of 4 denier (total fineness: 1000 denier) was obtained.
  • a discharge pressure of 2101 psi was applied, the speed after drawing was 5800 m/min, and the drawing ratio was 2.0.
  • a PET yarn was obtained in the same manner as in Example 1, except that the spinning temperature and the temperature of the hot wire were 299° C. and 420° C., respectively, and the spinning process was performed under a discharge pressure of 2181 psi.
  • a PET yarn was obtained in the same manner as in Example 1, except that the spinning temperature and the temperature of the hot wire were 304° C. and 380° C., respectively, and the spinning process was performed under a discharge pressure of 2312 psi.
  • a PET yarn was obtained in the same manner as in Example 1, except that PET chips with an intrinsic viscosity (I.V.) of 1.4 dl/g were used for the production of the spinning melt, the spinning temperature and the temperature of the hot wire were 298° C. and 380° C., respectively, and the spinning process was performed under a discharge pressure of 2160 psi.
  • PET chips with an intrinsic viscosity (I.V.) of 1.4 dl/g were used for the production of the spinning melt, the spinning temperature and the temperature of the hot wire were 298° C. and 380° C., respectively, and the spinning process was performed under a discharge pressure of 2160 psi.
  • Example 2 The same method as in Example 1 was applied, except that the spinning temperature was 310° C., heating by the hot wire was omitted, and a discharge pressure of 2930 psi was applied. However, an excessively high discharge pressure caused a leakage of the spinning melt in the spinning pack, and thus winding was impossible.
  • a PET yarn was obtained in the same manner as in Example 1, except that a PET chip with an intrinsic viscosity (I.V.) of 1.4 dl/g was used for the preparation of the spinning melt, the spinning temperature was 306° C., heating by the hot wire was omitted, and a discharge pressure of 2370 psi was applied.
  • I.V. intrinsic viscosity
  • a PET yarn was obtained in the same manner as in Example 1, except that a PET chip with an intrinsic viscosity (I.V.) of 1.21 dl/g was used for the preparation of the spinning melt, the spinning temperature was 299° C., heating by the hot wire was omitted, and a discharge pressure of 1910 psi was applied.
  • I.V. intrinsic viscosity
  • a PET yarn was obtained in the same manner as in Example 1, except that a PET chip with an intrinsic viscosity (I.V.) of 1.21 dl/g was used for the preparation of the spinning melt, the spinning temperature and the temperature of the hot wires were 292° C. and 380° C., respectively, and the spinning process was performed under a discharge pressure of 1850 psi.
  • I.V. intrinsic viscosity
  • the PET yarns of the examples and comparative examples were measured for intrinsic viscosity (I.V.), tensile strength, elongation at break, elongation at 4.5 g/d load (EASL@4.5 g/d), and dry heat shrinkage by the following method, respectively.
  • I.V. intrinsic viscosity
  • EASL@4.5 g/d tensile strength
  • EASL@4.5 g/d dry heat shrinkage
  • the intrinsic viscosity (I.V.) (dl/g) of each PET yarn was measured by a capillary viscometer according to Test Method ASTM D4603-96.
  • the solvent used was a mixture of phenol/1,1,2,2-tetrachloroethane (60/40 wt %).
  • the initial length (L1) of the specimen and the length (L2) of the specimen after 2 minutes in an oven at 177° C. were respectively measured in accordance with Test Method ASTM D885, and then the dry heat shrinkage (%) of the PET yarn was calculated by the following Equation.
  • PET yarns with high intrinsic viscosity (I.V.) of 1.11 to 1.25 dl/g, high tensile strength of 10.0 to 10.6 g/d, and elongation at break of 13.4 to 13.9% could be obtained.
  • PET chips with an intrinsic viscosity (I.V.) of less than 1.4 dl/g were used as in Comparative Examples 3 and 4, although low spinning temperatures of 299° C. or 292° C. were applied and thus the thermal decomposition of the polymer would be less than that of Examples 1 to 4, the intrinsic viscosity (I.V.) and tensile strength of PET yarns did not reach 1.1 dl/g and 10 g/d, respectively.
  • PET chips having a relatively high intrinsic viscosity (I.V.) of 1.4 dl/g were used, but even when a high spinning temperature of 306° C. was applied and thermal decomposition of the polymer occurred, the intrinsic viscosity (I.V.) and tensile strength of PET yarns did not reach 1.1 dl/g and 10 g/d, respectively.

Landscapes

  • 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)
US16/640,771 2017-09-22 2018-09-03 High-strength polyethylene terephthalate yarn and method for producing the same Abandoned US20200216980A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR10-2017-0122246 2017-09-22
KR20170122246 2017-09-22
PCT/KR2018/010211 WO2019059560A1 (ko) 2017-09-22 2018-09-03 고강도 폴리에틸렌테레프탈레이트 원사 및 그 제조방법

Publications (1)

Publication Number Publication Date
US20200216980A1 true US20200216980A1 (en) 2020-07-09

Family

ID=65809768

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/640,771 Abandoned US20200216980A1 (en) 2017-09-22 2018-09-03 High-strength polyethylene terephthalate yarn and method for producing the same

Country Status (6)

Country Link
US (1) US20200216980A1 (de)
EP (1) EP3686326A4 (de)
JP (2) JP2020531710A (de)
KR (1) KR20190034083A (de)
CN (1) CN111148866A (de)
WO (1) WO2019059560A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113430657A (zh) * 2021-06-25 2021-09-24 江苏恒力化纤股份有限公司 一种降低聚酯工业丝纺丝温度的方法
US20220145496A1 (en) * 2019-02-19 2022-05-12 Basf Se A process for producing a thermoplastic polyurethane fiber with low shrinkage, and the use of the fiber

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113430656B (zh) * 2021-06-25 2022-05-06 江苏恒力化纤股份有限公司 一种制备超高强聚酯工业丝的方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3988086A (en) * 1974-09-11 1976-10-26 Allied Chemical Corporation Melt spinning apparatus with convergence guide
US4245001A (en) * 1977-01-26 1981-01-13 Eastman Kodak Company Textile filaments and yarns
US4517149A (en) * 1980-06-27 1985-05-14 Toray Industries, Inc. Process for producing polyester fiber
US5661880A (en) * 1995-02-10 1997-09-02 Barmag Ag Method and apparatus for producing a multifilament yarn by a spin-draw process
WO2016144105A1 (ko) * 2015-03-09 2016-09-15 한국생산기술연구원 고강도 합성섬유의 제조방법 및 그로부터 제조된 고강도 합성섬유

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4867936A (en) * 1987-06-03 1989-09-19 Allied-Signal Inc. Process for producing high strength polyester yarn for improved fatigue resistance
US5033523A (en) * 1987-06-03 1991-07-23 Allied-Signal Inc. High strength polyester yarn for improved fatigue resistance
JP3161546B2 (ja) * 1991-09-13 2001-04-25 東洋紡績株式会社 高強度、低収縮ポリエステル系繊維の製造方法
JPH05311513A (ja) * 1992-05-01 1993-11-22 Asahi Chem Ind Co Ltd 高強度低収縮率ポリエステル繊維
JP3459478B2 (ja) * 1994-11-04 2003-10-20 ユニチカ株式会社 エアバッグ用糸条
JPH09268429A (ja) * 1996-03-29 1997-10-14 Toray Ind Inc 多糸条紡糸直接延伸法によるポリエステル繊維の製造法
JP2000265331A (ja) * 1999-03-19 2000-09-26 Unitika Ltd 高強度、高弾性率ポリエステル繊維の製造方法
KR100779936B1 (ko) * 2006-04-14 2007-11-28 주식회사 효성 산업용 고강력 폴리에틸렌테레프탈레이트 필라멘트
JP4983691B2 (ja) * 2008-03-28 2012-07-25 東レ株式会社 シートベルト用ポリエステル繊維
KR101575837B1 (ko) * 2009-12-18 2015-12-22 코오롱인더스트리 주식회사 에어백용 폴리에스테르 원사 및 그의 제조방법
KR101295697B1 (ko) * 2009-12-29 2013-08-20 주식회사 효성 에어백용 폴리에틸렌테레프탈레이트 섬유 및 이를 이용한 직물
MX2012007451A (es) * 2009-12-24 2012-10-15 Hyosung Corp Fibra de tereftalato de polietileno para bolsas de aire y textiles hechos de la misma.
KR101551421B1 (ko) * 2009-12-31 2015-09-09 주식회사 효성 타이어용 고강력 폴리에스테르 멀티 필라멘트의제조방법
CN102918187B (zh) * 2010-03-29 2015-08-05 可隆工业株式会社 聚酯纤维及其制备方法
KR101414224B1 (ko) * 2010-09-30 2014-07-02 코오롱인더스트리 주식회사 폴리에스테르 섬유 및 그의 제조방법
KR102282247B1 (ko) * 2016-01-29 2021-07-26 코오롱인더스트리 주식회사 고강도 폴리에스테르 원사 제조를 위한 장치 및 방법

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3988086A (en) * 1974-09-11 1976-10-26 Allied Chemical Corporation Melt spinning apparatus with convergence guide
US4245001A (en) * 1977-01-26 1981-01-13 Eastman Kodak Company Textile filaments and yarns
US4517149A (en) * 1980-06-27 1985-05-14 Toray Industries, Inc. Process for producing polyester fiber
US5661880A (en) * 1995-02-10 1997-09-02 Barmag Ag Method and apparatus for producing a multifilament yarn by a spin-draw process
WO2016144105A1 (ko) * 2015-03-09 2016-09-15 한국생산기술연구원 고강도 합성섬유의 제조방법 및 그로부터 제조된 고강도 합성섬유
US20180051392A1 (en) * 2015-03-09 2018-02-22 Korea Institute Of Industrial Technology Method of manufacturing high strength synthetic fibers, and high strength synthetic fibers manufactured using the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220145496A1 (en) * 2019-02-19 2022-05-12 Basf Se A process for producing a thermoplastic polyurethane fiber with low shrinkage, and the use of the fiber
CN113430657A (zh) * 2021-06-25 2021-09-24 江苏恒力化纤股份有限公司 一种降低聚酯工业丝纺丝温度的方法

Also Published As

Publication number Publication date
KR20190034083A (ko) 2019-04-01
EP3686326A4 (de) 2021-10-06
EP3686326A1 (de) 2020-07-29
WO2019059560A1 (ko) 2019-03-28
CN111148866A (zh) 2020-05-12
JP2021120501A (ja) 2021-08-19
JP2020531710A (ja) 2020-11-05

Similar Documents

Publication Publication Date Title
US20200216980A1 (en) High-strength polyethylene terephthalate yarn and method for producing the same
KR101440570B1 (ko) 폴리에틸렌 섬유 및 그의 제조방법
KR101956711B1 (ko) 타이어 코드용 폴리에스테르 원사 제조를 위한 장치 및 방법
WO2005108659A1 (en) Spinning poly(trimethylene terephthalate) yarns
US11603604B2 (en) Spinning pack for manufacturing high strength yarn, and yarn manufacturing apparatus and method
US4956446A (en) Polyester fiber with low heat shrinkage
KR100687033B1 (ko) 산업용 고강력 폴리에틸렌테레프탈레이트 멀티필라멘트
KR102282247B1 (ko) 고강도 폴리에스테르 원사 제조를 위한 장치 및 방법
JP2004124338A (ja) 細デニールポリエステル中空予備延伸糸の製造方法及びその方法から製造された細デニールポリエステル中空予備延伸糸
US20050161854A1 (en) Dimensionally stable yarns
KR102400546B1 (ko) 고강도 폴리에스테르 원사의 제조 방법 및 그 제조 장치
KR102400547B1 (ko) 고강도 폴리에스테르 원사의 제조 장치 및 그 제조 방법
US20190153626A1 (en) Polyolefin fiber and method for producing same
JPH11229234A (ja) 畳糸用ポリエステル繊維及びその製造方法
JPS5844763B2 (ja) 極細マルチフイラメントの溶融紡糸方法
JP2000144527A (ja) ポリエステル繊維の紡糸方法
US20230322979A1 (en) Polyethylene yarn having improved post-processability, and fabric comprising same
JP2842243B2 (ja) 溶融紡糸装置
KR100429949B1 (ko) 고강력, 고형태안정성 딥코드용 폴리에틸렌테레프탈레이트 섬유의 제조방법 및 그에 의하여 수득된ｐｅｔ 섬유
KR20130064161A (ko) 복합 섬유용 방사구금 및 이를 이용한 폴리아미드-폴리에스테르계 복합섬유와 제조 방법
KR0139561B1 (ko) 수술용 봉합사의 제조방법
KR20220163184A (ko) 고강력 폴리에스테르 원사 및 타이어 코드
KR100484119B1 (ko) 폴리에스터마이크로필라멘트사의제조방법
JP2000345428A (ja) ポリオレフィン系繊維の製造方法
KR20220163182A (ko) 고강력 타이어 딥코드

Legal Events

Date Code Title Description
AS Assignment

Owner name: KOLON INDUSTRIES, INC., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LIM, KI SUB;CHUNG, IL;PARK, SUNG HO;SIGNING DATES FROM 20200117 TO 20200120;REEL/FRAME:051990/0043

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION