US3858386A - Polyester yarn production - Google Patents

Polyester yarn production Download PDF

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Publication number
US3858386A
US3858386A US160019A US16001971A US3858386A US 3858386 A US3858386 A US 3858386A US 160019 A US160019 A US 160019A US 16001971 A US16001971 A US 16001971A US 3858386 A US3858386 A US 3858386A
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US
United States
Prior art keywords
yarn
denier
filaments
yarns
uster
Prior art date
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Expired - Lifetime
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US160019A
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English (en)
Inventor
Richard H Stofan
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.)
Celanese Corp
Original Assignee
Fiber 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 Fiber Industries Inc filed Critical Fiber Industries Inc
Priority to US160019A priority Critical patent/US3858386A/en
Priority to CA146,417A priority patent/CA1037672A/en
Priority to BR4477/72A priority patent/BR7204477D0/pt
Priority to GB3169372A priority patent/GB1382499A/en
Priority to US05/521,726 priority patent/US3969462A/en
Application granted granted Critical
Publication of US3858386A publication Critical patent/US3858386A/en
Assigned to CELANESE CORPORATION A DE CORP reassignment CELANESE CORPORATION A DE CORP ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: FIBER INDUSTRIES INC
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S57/00—Textiles: spinning, twisting, and twining
    • Y10S57/902—Reinforcing or tyre cords
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S57/00—Textiles: spinning, twisting, and twining
    • Y10S57/903—Sewing threads
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/298—Physical dimension

Definitions

  • ABSTRACT A method and apparatus are disclosed for the production of a novel industrial polyester filament yarn of improved uniformity wherein a plurality of filaments are melt-spun into a heated zone coupled with controlled cooling.
  • the yarn produced has improved long and short term Uster uniformity and improved uniformity of physical properties, particularly breaking strength, as shown by a reduced standard deviation of breaking strength.
  • the yarn is produced by melt spinning into a heated zone which maintains the filaments molten for intervals below the spinneret face and subsequently quenching the filaments with a radial outflow of cooling gases, thereby producing a low birefringence yarn which is capable of being drawn at high draw ratios to high tenacities.
  • polyester fibers of low birefringence can be most highly oriented in subsequent drawing steps, but that as filament spinning speeds increase, birefringence tended to increase because of the induced orientation of the filament which occurs in the rapid takeup of the yarn. This results in increased pulling tensions on the yarn in the spinning column, i.e., increases in column draw down.
  • various procedures have been incorporated into the spinning, including higher extrusion pressures and means for maintaining the filaments molten for a period of time after extrusion.
  • the filaments on quenching and drawing, while achieving high tenacities and modulus and desirable elongations, are found to be deficient in uniformity as measured in percent Uster. This results in a higher standard deviation for the physical properties, such as breaking strength, which is of most critical importance to industrial yarn.
  • a method for producing an industrial polyester filament yam of improved uniformity comprising melt spinning a plurality of filaments at an extrusion temperature above the polymer melting point into a heated zone maintained at a temperature of 260 460 centigrade, maintaining said filaments in said heated zone for filament travel distance of about 6 to 24 inches and hence, immediately passing said filaments about a gaseous quenching zone, directing quenching gases onto said filaments in a radial outward flow direction, said quenching gas being maintained at a temperature of about to 50 centigrade in a gaseous volume of about to 130 standard cubic feet per minute to provide a controlled cooling of said filaments and taking said filaments up as a yarn of improved Uster uniformity.
  • the heavy denier industrial polyester filament yarn produced in accordance with this invention has a denier per filament of 3 to 20, a tenacity of more than 7.0
  • grams per denier grams per denier, a long and short term percent Uster of less than 1.5, and more preferably a long term percent Uster of less than 1.0, a tensile factor (TE of more than 28 and a breaking strength standard deviation of less than 0.20 grams per denier as measured in yarns across a beam.
  • TE tensile factor
  • the improved uniformity of the yarn is achieved primarily through the utilization of controlled temperature conditions from immediately adjacent to the extrusion point to the cooling of the filaments to a temperature below their second order transition temperature.
  • the improvement is not only highly pronounced in Uster uniformity, but also in reduction in the average standard deviation of physical properties, particularly tensile strength. It is also noticeable in the reduction of both major and minor beaming defects as noted by Lindley defect counting at beaming.
  • FIG. 1 is a front elevational and partial schematic of the apparatus of the present invention showing more particularly the relationship of the extrusion heated zone and quenching apparatus in a spinning column;
  • FIG. 2 is a graph which illustrates the relationship between the quenching distance from the spinneret face as it relates to long term Uster values and tensile factor (re FIG. 3 is a graph which relates long term Uster, elongation, tensile factor (TE) and tenacity with various quench gas flow rates.
  • TE tensile factor
  • the schematic drawing of spinning pack 10 is representative of a standard polyester pack which includes final filtration means for the polymer and a spinneret with a preselected number of holes for the extrusion of polymer.
  • the polymer conveyed to the pack is maintained at a spinning temperature which is normally comfortably above the melting temperature of the polymer, i.e., about 257 centigrade for polyethylene terephthalate.
  • spinning temperatures are normally in the range of about 290 to 310 centigrade.
  • the spinneret utilized is selected in accordance with the denier and filament count of the yarn being produced. If desired, one or more yarns can be spun from a single pack in a single column as illustrated in the drawing.
  • the spinning speed varies with the particular process and fiber type being spun, but generally is in the range of 2,000 to 10,000 feet per minute or more at wind up in a spin-draw process.
  • the molten polymer as it is extruded from pack I0, immediately enters a heated zone which is maintained at an elevated temperature by a heated cylindrical shroud 12 which preferably is positioned adjacent to pack 10 and extends downwardly into the spinning column for a distance of about 6 to 2-4 inches.
  • the shroud has an internal diameter of sufficient size to permit safe passage of the filaments therethrough without danger of contact with the heated shroud. Conveniently, leeway of one to several inches of distance is provided between the outside filament travel line and the inside diameter of the shroud.
  • the shroud. is heated preferably by internal heating means such as electrical resisters, circulating fluids or the like conventional heating means to produce an internal surface temperature on the shroud in the range of 260 to 460 centigrade, and
  • Such shroud temperatures provide a heated zone of temperatures slightly less than the surface temperature, but because of heat radiated from the spinning pack and molten extrudate, a temperature near that of the shroud is readily maintained.
  • the exact temperature utilized is primarily dependent upon the size of the shroud, distance away from the filaments, heat loss from the shroud area, filament denier, polyester type and the like considerations. The temperature selected is one sufficient to maintain the as-spun polymer in a molten condition as it passes through the shroud area.
  • Quench stick 14 is centered among the filaments and positioned by means of positioning guide (piece pin) 16 in a central location under the pack and spinneret. The filaments are guided down the quench stick so as not to come in contact therewith, but to spread the filaments uniformly around the quench stick. Quench stick 14 is positioned by means of positioning guide 16 and spacer 18, so as to conveniently position each quench stick in the same location in a plurality of packs and spinning columns.
  • the quench stick preferably extends into the area of the heated shroud so as to provide a controlled cooling immediately as the filaments exit from the shroud.
  • the rapid passage of fibers down the spinning column creates a downward draft of convection currents which tends to carry both the heat of the shroud and the cooling effect of the quench gases downwardly along the filament path of travel. Therefore, by utilizing the preferred quench stick positioning, the most desirable control of cooling is obtained.
  • the quench stick is preferably made of a porous material, such as ceramic, or sintered metal in a manner which provides a predetermined, even flow of air throughout the length and circumference of the stick.
  • a porous material such as ceramic, or sintered metal in a manner which provides a predetermined, even flow of air throughout the length and circumference of the stick.
  • Such quenching sticks are commercially available in a variety of porosities suitable for this application.
  • the air flow through the quench stick affects the quality of the yarn produced and therefore, for a given spinning process a preferred gas flow, e.g., air, results in the most desirable spinning.
  • SCFM standard cubic feet per minute
  • the air flow is in a gas volume of about 20 to 130 SCFM with the preferred air flow in the range of about 20 to 60 SCFM.
  • FIG. 3 which relates changes in yarn physical properties with changes in air flow rates for a 1000/192 industrial yarn. It will be noted from this graph that the best results for this yarn at a 5.8 draw ratio is an air flow of about 40 SCFM.
  • Ambient quench gas temperatures have been found to be satisfactory, although in the compression of the gas, a temperature rise is often unavoidable. Therefore, under certain climatic conditions, it may be desirable to cool such gases so as to preferably utilize a quench gas temperature within the range of to 80 centigrade, and more preferably about 25 to 50 centigrade.
  • the quench stick length and diameter are selected in accordance with the spinning speed, filament count,
  • quench sticks are normally of a diameter of about 1 to 4 inches and a length of about 8 to 20 inches.
  • a spin finish is applied and the filaments drawn and taken up on a package as a finished yarn or alternatively, taken upon a package in an undrawn state.
  • the yarns may be taken up on a package after the application of the spin finish, it is normally most desirable in a modern polyester production plant to immediately thereafter draw the yarn in one or more stages under known drawing conditions and heat set and/or relax the yarn if desired prior to taking the yarn up as a finished product.
  • yarns are normally drawn at the highest achievable draw ratio which can be successfully processed in continuous operation.
  • draw ratios in excess of 3, and more preferably on the order of 4 to about 6.5 to l are preferably utilized with multi-stage drawing being the preferred method of operation.
  • the actual total draw ratio utilized is dependent upon the as-spun birefringence which, as noted above, is preferably as low as possible so as to achieve the highest draw ratio.
  • drawn yarns have tenacities in excess of 7 grams per denier, and more preferably, in'the range of 8 to l 1 grams or more per denier.
  • Tensile factor i.e., TB
  • the yarns produced in accordance with the present method have tensile factors greater than 28 and more preferably, greater than 30. Typically, the range of tensile factor is between 28 and 40.
  • the yarns of the present invention are preferably high tenacity industrial yarns such as tire yarns, conveyor belt yarns, sewing threads and the like, having denier per filaments of at least 1.0 and more preferably 3.0 to 20 or more.
  • Total drawn deniers of such yarns range from about to 10,000 with most yarns having total deniers of about 500 to 3,000. All of such yarns are considered to be heavy deniers.
  • the long, i.e., inert, and the short, i.e., normal, percent Uster of yarns produced in accordance with the present invention is less than 1.5, and more preferably less than 1.0.
  • the Uster is measured in accordance with Uster Evenness Tester, Model GGPC 10, in accordance with the manufacturers recommended procedure, with the proviso that a feed tension of 25 grams is utilized on the yarn and a yarn feed rate of 25 yards per minute is fed to the tester for at least 3 minutes.
  • the rotofil setting of the tester is placed at number 3 for conventional industrial yarns.
  • the breaking strength standard deviation (0) of yarns produced in accordance with the present invention is also substantially improved over previous industrial yarn processes.
  • Such breaking strength standard deviation is less than 0.20 grams per denier between position-to-position yarns and most preferably, less than 0.15 grams per denier, when measured in accordance with ASTM Method D885-68.
  • the standard deviation is calculated based upon the testing of at least samples of yarn from position-to-position across production machines. It is often more convenient to measure the standard deviation of the yarns across a beam and such yarns fall within the specified range.
  • the preferred polyesters used in this invention are obtained from terephthalate acid via any of the known polymerization routes, i.e., ester interchange, direct esterification, BHET and the like, wherein at least 75 percent of the recurring structural units of the polyester are glycol terephthalate structural units.
  • the polymers used are fiber forming and preferably of an intrinsic viscosity of at least 0.45 up to 1.00 or more as measured in 8 percent orthochlorophenyl at 25 centigrade.
  • a temperature of 120 300 centigrade and a time of 001-2 seconds may be adopted.
  • polyester polymer used in the present invention preferably contains at least 75 mol percent of ethylene terephthalate units and as other acid components when used, a dibasic acid such as phthalic acid, isolphthalic acid, adipic acid, oxalic acid, sebacic acid, suberic acid, glutaric acid, pimelic acid, fumaric acid and succinic acid may be used.
  • a polymerization degree modifier like propionic acid may be used.
  • alcohol component a divalent alcohol such as polymethylene glycol having 2-l0 carbon atoms (trimethylene glycol and butylene glycol) and cyclohexane dimethanol may be cited.
  • EXAMPLE I Polyethylene terephthalate was produced in accordance with a continuous polymerization process to provide a molten polymer having an intrinsic viscosity of 0.88, as measured in the final product, which was fed directly to a spinning pack and apparatus in accordance with FIG. 1. The polymer was spun at a spinning temperature of 297 to 300 centigrade at a rate of 30.9
  • the yarn spun was 1000/192 yarn utilizing a split threadline wherein one-half the filaments were split on either side of the quench stick.
  • a spin finish was applied utilizing dual finish applicator rolls and the yarn recombined for drawing; ina spin-draw process.
  • the yarn was drawn to a total draw ratio of 5.8.
  • EXAMPLE 2 The process of the present invention was compared to standard production spinning processes which included the use of a heated shroud at a temperature of 320 centigrade, but without an outflow quench.
  • the spinning process utilized 0.88 intrinsic viscosity polyethylene terephthalate, a spinning rate of about 3] pounds per hour, a spin-draw procedure at a total draw ratio of 6.08 to produce a 1020/ I92 yarn.
  • the percent Uster of standard production yarn utilizing the heated shroud was then compared with the process of the present invention wherein the heated shroud was utilized at the same temperature but combined with the outflow quench of the air flow of 40 SCFM, a quench air temperature of about 40 centigrade, and a quench distance of about 10 inches from the spinning pack. All other conditions were the same as the comparison.
  • the standard production yarn had a percent Uster (inert) of 2.3, whereas the yarn of the present invention had a percent Uster (inert) of 0.5.
  • the breaking load of the yarn of the present invention was 9,072 grams. Standard deviation of breaking load in position-to-position, as measured in yarns across a beam was 0.15 grams per dlenier. The standard production yarn had a breaking load of 9,096 grams,
  • EXAMPLE 3 8.90 and TE was 31.3. The tenacity of standard production was 8.84 and TE was 30.2.
  • a heavy denier melt spun polyester filament yarn having a tenacity of more than 7.0 grams per denier, a long and short term percent Uster of less than 1.5, a tensile factor of more than 28, and a breaking strength standard deviation of less than 0.20 grams per denier as measured in yarns across a beam.
  • the heavy denier polyester yarn of claim 1 wherein the denier per filament is 3 to 20, the total denier is 500 to 5,000, the tenacity is 8 to l 1 grams per denier and the tensile factor is more than 30.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Artificial Filaments (AREA)
US160019A 1971-07-06 1971-07-06 Polyester yarn production Expired - Lifetime US3858386A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US160019A US3858386A (en) 1971-07-06 1971-07-06 Polyester yarn production
CA146,417A CA1037672A (en) 1971-07-06 1972-07-05 Polyester yarn production
BR4477/72A BR7204477D0 (pt) 1971-07-06 1972-07-06 Fio de filamento de poliester de alto denier processo para a producao do mesmo e aparelho para fiacao de fibra de poliester
GB3169372A GB1382499A (en) 1971-07-06 1972-07-06 Polyester yarn production
US05/521,726 US3969462A (en) 1971-07-06 1974-11-07 Polyester yarn production

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Application Number Priority Date Filing Date Title
US160019A US3858386A (en) 1971-07-06 1971-07-06 Polyester yarn production

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US05/521,726 Division US3969462A (en) 1971-07-06 1974-11-07 Polyester yarn production

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US3858386A true US3858386A (en) 1975-01-07

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BR (1) BR7204477D0 (pt)
CA (1) CA1037672A (pt)
GB (1) GB1382499A (pt)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4285646A (en) * 1980-05-13 1981-08-25 Fiber Industries, Inc. Apparatus for quenching melt-spun filaments
US4332764A (en) * 1980-10-21 1982-06-01 Fiber Industries, Inc. Methods for producing melt-spun filaments
DE3629731A1 (de) * 1985-09-18 1987-03-26 Inventa Ag Vorrichtung zum abkuehlen und praeparieren von schmelzgesponnenem spinngut
DE3708168A1 (de) * 1987-03-05 1988-09-15 Inventa Ag Vorrichtung zum abkuehlen und praeparieren von schmelzgesponnenem spinngut
DE3822571A1 (de) * 1988-07-04 1990-02-01 Hoechst Ag Spinnverfahren und vorrichtung zur durchfuehrung desselben
US4988270A (en) * 1985-09-18 1991-01-29 Ems-Inventa Ag Apparatus for cooling and conditioning melt-spun material
US5589125A (en) * 1992-03-17 1996-12-31 Lenzing Aktiengesellschaft Process of and apparatus for making cellulose mouldings
US5650112A (en) * 1993-07-28 1997-07-22 Lenzing Aktiengesellschaft Process of making cellulose fibers
US5698151A (en) * 1993-07-01 1997-12-16 Lenzing Aktiengesellschaft Process of making cellulose fibres
US5939000A (en) * 1993-05-24 1999-08-17 Acordis Fibres (Holdings) Limited Process of making cellulose filaments
KR19990088232A (ko) * 1998-05-14 1999-12-27 엔찐게르 한스 울리히 열가소성폴리머로부터고역가균일성을갖는마이크로필라멘트사를생산하기위한장치및방법
US20030017066A1 (en) * 2001-07-19 2003-01-23 Baxter International Inc. Apparatus, flexible bag and method for dispensing
US6511624B1 (en) 2001-10-31 2003-01-28 Hyosung Corporation Process for preparing industrial polyester multifilament yarn
US20030025239A1 (en) * 2001-07-12 2003-02-06 Holger Brandt Device for melt spinning and cooling a filament bundle
US20030141611A1 (en) * 2002-01-25 2003-07-31 Giese Kenneth Charles Adjustable shroud for spinning synthetic yarns
US20220290338A1 (en) * 2021-03-02 2022-09-15 Sanko Tekstil Isletmeleri San. Ve Tic. A.S. Protective woven fabric

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2611748B2 (fr) * 1985-09-18 1990-07-27 Inventa Ag Dispositif pour le refroidissement et la preparation de fils files en fusion
CN104919096B (zh) 2013-02-04 2017-04-26 贝卡尔特公司 用于聚合物纤维挤出的冷却管
CN106757431A (zh) * 2016-11-25 2017-05-31 南通杰克拜尼服帽有限公司 一种吸湿排汗型涤纶长丝的生产工艺

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3342027A (en) * 1965-05-04 1967-09-19 Du Pont Coalesced multifilament yarn
US3365875A (en) * 1965-01-14 1968-01-30 Chemstrand Ltd Composite elastic yarns
US3419060A (en) * 1963-11-19 1968-12-31 Dunlop Rubber Co Textile cord material and pneumatic tires manufactured therewith
US3664114A (en) * 1969-07-31 1972-05-23 Eastman Kodak Co Spun polyester strands and method for making
US3670489A (en) * 1969-07-28 1972-06-20 Eastman Kodak Co Textile yarn

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3419060A (en) * 1963-11-19 1968-12-31 Dunlop Rubber Co Textile cord material and pneumatic tires manufactured therewith
US3365875A (en) * 1965-01-14 1968-01-30 Chemstrand Ltd Composite elastic yarns
US3342027A (en) * 1965-05-04 1967-09-19 Du Pont Coalesced multifilament yarn
US3670489A (en) * 1969-07-28 1972-06-20 Eastman Kodak Co Textile yarn
US3664114A (en) * 1969-07-31 1972-05-23 Eastman Kodak Co Spun polyester strands and method for making

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4285646A (en) * 1980-05-13 1981-08-25 Fiber Industries, Inc. Apparatus for quenching melt-spun filaments
US4332764A (en) * 1980-10-21 1982-06-01 Fiber Industries, Inc. Methods for producing melt-spun filaments
DE3629731A1 (de) * 1985-09-18 1987-03-26 Inventa Ag Vorrichtung zum abkuehlen und praeparieren von schmelzgesponnenem spinngut
US4988270A (en) * 1985-09-18 1991-01-29 Ems-Inventa Ag Apparatus for cooling and conditioning melt-spun material
DE3708168A1 (de) * 1987-03-05 1988-09-15 Inventa Ag Vorrichtung zum abkuehlen und praeparieren von schmelzgesponnenem spinngut
US4990297A (en) * 1987-03-05 1991-02-05 Ems-Inventa Ag Apparatus and method for cooling and conditioning melt-spun material
DE3822571A1 (de) * 1988-07-04 1990-02-01 Hoechst Ag Spinnverfahren und vorrichtung zur durchfuehrung desselben
US5798125A (en) * 1992-03-17 1998-08-25 Lenzing Aktiengesellschaft Device for the preparation of cellulose mouldings
US5589125A (en) * 1992-03-17 1996-12-31 Lenzing Aktiengesellschaft Process of and apparatus for making cellulose mouldings
US5968434A (en) * 1992-03-17 1999-10-19 Lenzing Aktiengesellschaft Process of making cellulose moldings and fibers
US5939000A (en) * 1993-05-24 1999-08-17 Acordis Fibres (Holdings) Limited Process of making cellulose filaments
US5951932A (en) * 1993-05-24 1999-09-14 Acordis Fibres (Holdings) Limited Process of making cellulose filaments
US5698151A (en) * 1993-07-01 1997-12-16 Lenzing Aktiengesellschaft Process of making cellulose fibres
US5650112A (en) * 1993-07-28 1997-07-22 Lenzing Aktiengesellschaft Process of making cellulose fibers
KR19990088232A (ko) * 1998-05-14 1999-12-27 엔찐게르 한스 울리히 열가소성폴리머로부터고역가균일성을갖는마이크로필라멘트사를생산하기위한장치및방법
US20030025239A1 (en) * 2001-07-12 2003-02-06 Holger Brandt Device for melt spinning and cooling a filament bundle
US6918751B2 (en) * 2001-07-12 2005-07-19 Neumag Gmbh & Co. Kg Device for melt spinning and cooling a filament bundle
US20030017066A1 (en) * 2001-07-19 2003-01-23 Baxter International Inc. Apparatus, flexible bag and method for dispensing
US6511624B1 (en) 2001-10-31 2003-01-28 Hyosung Corporation Process for preparing industrial polyester multifilament yarn
US20030141611A1 (en) * 2002-01-25 2003-07-31 Giese Kenneth Charles Adjustable shroud for spinning synthetic yarns
US20220290338A1 (en) * 2021-03-02 2022-09-15 Sanko Tekstil Isletmeleri San. Ve Tic. A.S. Protective woven fabric
US12344964B2 (en) * 2021-03-02 2025-07-01 Sanko Tekstil Isletmeleri San. Ve Tic. A.S. Protective woven fabric

Also Published As

Publication number Publication date
CA1037672A (en) 1978-09-05
GB1382499A (en) 1975-02-05
BR7204477D0 (pt) 1973-06-07

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