US20060226573A1 - Method and apparatus for melt-spinning and cooling a plurality of filaments - Google Patents

Method and apparatus for melt-spinning and cooling a plurality of filaments Download PDF

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Publication number
US20060226573A1
US20060226573A1 US11/399,039 US39903906A US2006226573A1 US 20060226573 A1 US20060226573 A1 US 20060226573A1 US 39903906 A US39903906 A US 39903906A US 2006226573 A1 US2006226573 A1 US 2006226573A1
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US
United States
Prior art keywords
cooling
quenching
air stream
filaments
curtain
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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
US11/399,039
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English (en)
Inventor
Mathias Stundl
Horst Kropat
Anton Mooshammer
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.)
Oerlikon Textile GmbH and Co KG
Original Assignee
Saurer GmbH and Co KG
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 Saurer GmbH and Co KG filed Critical Saurer GmbH and Co KG
Assigned to SAURER GMBH & CO. KG reassignment SAURER GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KROPAT, HORST, MOOSHAMMER, ANTON, STUNDL, MATHIAS
Publication of US20060226573A1 publication Critical patent/US20060226573A1/en
Abandoned 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

Definitions

  • the present invention relates to a method for melt spinning and cooling a plurality of filaments used in the production of a non-woven fabric or web, and also an apparatus for carrying out the method.
  • the filaments In order to be able to meet the requirements of uniformity of characteristics of the individual filaments and also the requirements of greater production speeds, the filaments have to be cooled after extrusion uniformly and evenly to the maximum extent possible.
  • a cross-flow quench system is used for this purpose, which is positioned on both of the longitudinal sides of the spinneret and which instantaneously blows a cooling air stream transversely to the filament curtain on the filaments.
  • the immediate concurrence of the cooling air streams outside the filament curtain leads to air swirls, which act especially on those filaments, which are guided directly in the side edge zones of the filament curtain.
  • DE 33 18 096 discloses a apparatus, in which guide plates are arranged which can be displaced parallel to the front sides of the filament curtain.
  • this helps achieve only certain flow guidances of the cooling air in relation to the atmosphere.
  • the cooling of the filaments in the side edge zones and also the side edge flow effects can be little influenced by this.
  • a separate quenching air stream acts on the filaments, wherein said quenching air stream is oriented transversely to the cooling air stream.
  • separate quenching members are provided at each end of the spinneret.
  • the improved configuration of the inventive method is particularly advantageous in which the quenching air stream is generated next to the side edge of the filament curtain in a quenching direction that has a component oriented in the running direction of the filaments, and wherein a quenching angle in the range of 0° to 45° is provided between the filaments and the quenching stream.
  • a parallel flow relative to the filament curtain can be provided, wherein said parallel flow essentially influences only the side edge air layers of the filament curtain.
  • the quenching angle is advantageously increased, wherein quenching angles in the range of up to 45° have turned out to be suitable for the purpose of preventing any unreliable differences between the cooling conditions in the center of the filament curtain and those at the side edges of the filament curtain.
  • the inventive apparatus comprises a quench opening and a pressure chamber connected to the quench opening, wherein the quench opening has an inclination for forming a quenching angle in the range of 0° to 45° between the filaments and the quenching stream.
  • the quenching air stream is created according to an advantageous variant of the method at a quenching speed, which is greater than that of the cooling air stream. It is thus possible to create a turbulence free flow in the border region of the filament curtain up to the outlet of the cooling unit.
  • the quenching air stream and the cooling air stream are thereby preferably formed by conditioned air, which essentially has the same temperature. Basically, however it is also possible to supply the filament curtain with a quenching air stream and a cooling air stream having different temperatures. Thus the quenching air stream can also be formed advantageously using ambient air.
  • the quenching member is preferably formed by a quench opening oriented towards the side edge of the filament curtain and a pressure chamber connected to said quench opening.
  • the quench opening preferably has a rectangular outlet cross-section, which extends essentially parallel to the front end of the spinneret over the entire thickness of the filament curtain.
  • a flow straightener is arranged inside the quench opening.
  • the inventive apparatus is operated according to a preferred improved configuration using a cooling unit, which contains a cooling wall with a cooling chamber, on both longitudinal sides of the spinneret. Two separate cooling air streams can thus be created, each of which is oriented towards the filaments transversely to the filament curtain.
  • Such cooling units enable an intensive cooling, as a result of which high process speeds are possible even in case of high filament densities inside the filament curtain.
  • one or more cover plates be assigned to each of the quenching members, wherein said cover plates extend at a distance from and parallel to the side edges of the curtain and are configured to be displaceable. Additional flow effects for ensuring an even side edge flow can thus be created. In this manner it is also possible to utilize the entrained ambient air in case of a partial cover.
  • FIG. 1 schematically illustrates a first embodiment of the inventive apparatus for carrying out the inventive method
  • FIG. 2 schematically illustrates a cross-section of the embodiment shown in FIG. 1 ;
  • FIG. 3 schematically illustrates a top view of another embodiment of the inventive apparatus.
  • FIG. 4 illustrates a cross-section of another embodiment of the inventive apparatus.
  • FIG. 1 and FIG. 2 illustrate a first embodiment of the inventive apparatus for carrying out the inventive method for melt-spinning and cooling a plurality of filaments.
  • FIG. 1 schematically illustrates a perspective view of the embodiment and
  • FIG. 2 schematically illustrates a cross-section thereof. The following description applies to both figures unless explicit reference is made to either of the figures.
  • the embodiment comprises a spinneret 1 , which has on its bottom side a plurality of nozzle bores arranged preferably in one or more longitudinally extending rows.
  • the spinneret 1 is connected to a melt source (not illustrated here) using a melt inlet 2 .
  • a cooling unit 3 is arranged below the spinneret 1 . Between the spinneret 1 and the cooling unit 3 a short spinning zone is provided, in which the filaments are guided without an active cooling.
  • the cooling unit 3 comprises a cooling wall 4 . 1 extending parallel to a longitudinal side of the spinneret 1 , said cooling wall being connected to a cooling chamber 5 . 1 .
  • the cooling chamber 5 . 1 is connected to a cooling air source (not illustrated here) using an air inlet 17 .
  • a fan or an air-conditioner can be provided as the cooling air source.
  • the cooling unit 3 further comprises separate quenching members 8 . 1 and 8 . 2 , below the ends of the spinneret 1 .
  • FIG. 2 illustrates the cross-section of each of the quenching members 8 . 1 and 8 . 2 , wherein the quenching member 8 . 1 is assigned to the left end of the spinneret 1 and the quenching member 8 . 2 is assigned to the right end of the spinneret 1 .
  • the quenching member 8 . 1 is formed by a quench opening 9 . 1 and a pressure chamber 10 . 1 connected to the quench opening 9 . 1 .
  • the pressure chamber 10 . 1 is connected to a pressure source (not illustrated here).
  • the quenching member 8 . 2 arranged at the opposite end is formed by a quench opening 9 . 2 and a pressure chamber 10 . 2 connected to the quench opening 9 . 2 .
  • the pressure chamber 10 . 2 is also connected to a pressure source.
  • the quench openings 9 . 1 and 9 . 2 each have an essentially rectangular outlet cross-section, in which a flow straightener 11 is arranged.
  • the quench opening 9 . 1 on the left end of the spinneret has an inclination relative to a plumb line, so that the quenching stream discharged from the outlet cross-section of the quench opening 9 . 1 impinges on the filaments 6 extruded from the spinneret 1 at a quenching angle.
  • the quenching angle is indicated by the reference symbol ⁇ .
  • the quench opening 9 . 2 on the opposite end of the spinneret 1 is embodied essentially laterally reversed to the quench opening 9 . 1 .
  • the quench opening 9 . 2 has an opposite inclination so that the quenching air stream discharged from the outlet cross-section of the quench opening 9 . 2 impinges on the filaments 6 extruded from the spinneret 1 at a quenching angle.
  • the quenching angle here also is indicated by the reference symbol ⁇ .
  • the quenching angles and thus the arrangement of the quench openings 9 . 1 and 9 . 2 are configured preferably identically in mirror image relationship at both ends of the spinneret 1 .
  • a draw-off nozzle 12 is arranged below the cooling unit 3 in order to draw off the filaments 6 from the spinneret 1 and to deposit them in the form of a spun-bonded non-woven fabric 18 on a delivery belt 13 arranged below the draw-off nozzle 12 .
  • the delivery belt 13 is constructed to be air-permeable and is driven transversely to the draw-off nozzle 12 in the direction of the arrow, using a drive system which is not illustrated here in more detail.
  • a polymer melt is supplied to the spinneret 1 and is extruded under pressure from nozzle bores arranged on the bottom side of the spinneret 1 .
  • the filaments 6 discharged from the nozzle bores of the spinneret 1 are guided in a row-shaped arrangement as a so-called filament curtain 7 .
  • the filament curtain 7 is thereby drawn off by the draw-off nozzle 12 from the spinneret 1 .
  • the filament curtain 7 is guided through a guide channel 14 of the draw-off nozzle 12 , wherein a conveying fluid is fed to the guide channel 14 .
  • the cooling air stream is generated by the cooling chamber 5 . 1 and the cooling wall 4 . 1 and is blown uniformly over the entire width and length of the cooling wall 4 . 1 onto the filaments 6 of the filament curtain 7 .
  • the quenching members 8 . 1 and 8 are arranged transversely to the filament curtain 7 in the cooling zone formed by the cooling unit 3 .
  • the quenching air streams created by the quenching members 8 . 1 and 8 . 2 are blown in the running direction of the filaments 6 so as to prevent the occurrence of any substantial air friction on the filaments.
  • the transversely oriented cooling air stream and also the quenching air streams configured on the side edges of the filament curtain 7 are coordinated to one another in such a way that the filaments inside the filament curtain 7 are cooled essentially uniformly independent of the location at which the filaments 6 are guided.
  • the quenching air streams are configured to have a slightly higher quenching speed as compared to the transversely oriented cooling air stream so as to prevent the occurrence of air swirls over the entire cooling length and so as to ensure a uniform guidance of the filaments up to the draw-off nozzle 12 .
  • the filament curtain 7 is received by the draw-off nozzle 12 and deposited in the form of a spun-bonded fabric 18 on the delivery belt 13 .
  • the quenching air streams engage the filaments in the inlet region of the cooling zone.
  • the cooling air stream is thus superimposed over the entire length of the cooling zone with the quenching air streams.
  • the quench openings 9 . 1 and 9 . 2 are aligned in such a manner that each quenching air stream impinges on the filaments 6 of the filament curtain 7 at a quenching angle of approx. 20°.
  • quenching angles lying in the range of 0° to 45° could be configured in order to achieve an advantageous guidance and cooling of the filaments at the side edges of the filament curtain 7 .
  • the quenching angle on both of the side edges is configured identically in a range of 0° to 20°.
  • the quench openings 9 . 1 and 9 . 2 could each be embodied on movable quench lugs whereby a variation of the quenching angle is possible.
  • FIG. 3 Another embodiment of the inventive apparatus for carrying out the inventive method is illustrated in FIG. 3 .
  • the embodiment shown in FIG. 3 being essentially identical to the previous embodiment, a top view thereof is schematically illustrated here. Essentially only the differences between the two embodiments are explained below.
  • the cooling unit 3 comprises on both of the longitudinal sides of the spinneret 1 a cooling wall 4 . 1 and 4 . 2 , each of which is connected to a cooling chamber 5 . 1 and 5 . 2 .
  • the cooling walls 4 . 1 and 4 . 2 are arranged essentially parallel to the spinneret 1 on the side of the cooling unit 3 adjacent the curtain 7 .
  • the cooling chambers 5 . 1 and 5 . 2 are connected to a cooling air source (not illustrated), so that the cooling chambers 5 . 1 and 5 . 2 are filled with a cooling medium, preferably cooling air, which is guided under the pressure effect by the cooling walls 4 . 1 and 4 . 2 transversely to the filament curtain 7 .
  • the quenching members 8 . 1 and 8 . 2 are arranged on both of the side edges of the filament curtain.
  • Each of the quenching members 8 . 1 and 8 . 2 comprises a quench opening 9 . 1 and 9 . 2 , through which a quenching air stream is generated and blown on the filaments 6 of the filament curtain at a quench angle, as described above.
  • Each quench opening 9 . 1 and 9 . 2 can contain a flow straightener, whereby an essentially rectified air flow is generated so as to give rise to a quenching stream that is uniform over the entire thickness of the filament curtain 7 .
  • Each of the quench openings 9 . 1 and 9 . 2 is connected to a pressure chamber 10 . 1 and 10 . 2 .
  • Especially high filament densities inside the filament curtain 7 can be cooled intensively and uniformly in the embodiment illustrated in FIG. 3 . Due to the intensive cooling effect, high draw-off speeds can thereby be advantageously configured using a draw-off nozzle arranged downstream.
  • FIG. 4 schematically illustrates a transverse section of another embodiment of the inventive apparatus for carrying out the inventive method.
  • the embodiment being essentially identical to that shown in FIG. 3 , only the differences are explained below.
  • the cooling unit 3 arranged below the spinneret 1 is formed by the cooling walls 4 . 1 and 4 . 2 extending along the longitudinal sides, together with the cooling chambers 5 . 1 and 5 . 2 .
  • Quenching members 8 . 1 and 8 . 2 are provided on each of the side edges, wherein only quenching member 8 . 2 is illustrated in FIG. 4 .
  • Several cover plates are provided at the side edges of the filament curtain 7 in order to be able to shield the filaments 6 from the environment.
  • the cover plates 19 . 1 and 19 . 2 assigned to the quenching member 8 . 2 are illustrated in FIG. 4 .
  • the cover plates 19 . 1 and 19 . 2 are displaceably held in a top guide 20 and a bottom guide 21 .
  • the cover plates 19 . 1 and 19 . 2 can thereby be selectively adjusted between a closed position and an open position.
  • a lateral air outlet 22 is formed in the open position. Due to this, additional flow effects can be created on the side edge
  • the filament curtain 7 is drawn-off by the draw-off nozzle 12 from the spinneret 1 .
  • the filament curtain 7 guided in the guide channel 14 is conveyed by a conveying fluid, which is supplied by the fluid chambers 16 . 1 and 16 . 2 and the fluid inlets 15 . 1 and 15 . 2 to the guide channel 14 .
  • FIGS. 1 to 4 of the inventive apparatus for carrying out the inventive method serve as examples for the design and arrangement of the quenching means. What is important here is that an additional quenching air stream for guiding the filaments on the side edge zones of the filament curtain can be created. It is especially possible to thereby effectively prevent the air swirls on the side edge zones of the filament curtain, such air swirls being created by cross-flow quenching.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Nonwoven Fabrics (AREA)
US11/399,039 2005-04-07 2006-04-06 Method and apparatus for melt-spinning and cooling a plurality of filaments Abandoned US20060226573A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005015974 2005-04-07
DE102005015974.5 2005-04-07

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US (1) US20060226573A1 (fr)
EP (1) EP1710329B1 (fr)
CN (1) CN1844505B (fr)
DE (1) DE502006004562D1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080012170A1 (en) * 2006-07-14 2008-01-17 General Electric Company Process for making a high heat polymer fiber
US20100048853A1 (en) * 2006-07-10 2010-02-25 Sabic Innovative Plastics, Ip B.V. Polyetherimide polymer for use as a high heat fiber material
US20100229517A1 (en) * 2007-10-26 2010-09-16 Kan Fujihara Polyimide fiber mass, sound absorbing material, thermal insulating material, flame-retardant mat, filter cloth, heat resistant clothing, nonwoven fabric, heat insulation/sound absorbing material for aircraft, and heat resistant bag filter
CN102296426A (zh) * 2011-08-09 2011-12-28 温州朝隆纺织机械有限公司 用于生产双组分纺粘非织造布的设备及制造方法
WO2015044953A1 (fr) * 2013-09-26 2015-04-02 Reliance Industries Limited Système, procédé et dispositif pour refroidir des fibres multifilaments synthétiques
CN105821502A (zh) * 2016-05-27 2016-08-03 浙江显昱纤维织染制衣有限公司 一种纺丝机的冷却箱
US20220205156A1 (en) * 2018-05-28 2022-06-30 Michael Nitschke Manufacture of spunbonded nonwovens from continuous filaments
US11528244B2 (en) 2012-01-13 2022-12-13 Kyndryl, Inc. Transmittal of blocked message notification

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3575470B1 (fr) * 2018-05-28 2020-10-21 Reifenhäuser GmbH & Co. KG Maschinenfabrik Dispositif de fabrication d'un tissu non-tissé à partir de filaments continus
ES2831077T3 (es) * 2018-05-28 2021-06-07 Reifenhaeuser Masch Dispositivo y proceso para la fabricación de telas no tejidas hiladas a partir de filamentos continuos
DE102020114761A1 (de) * 2019-06-19 2020-12-24 Oerlikon Textile Gmbh & Co. Kg Verfahren und Vorrichtung zum Schmelzspinnen einer Vielzahl von Filamenten

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US6183684B1 (en) * 1994-12-15 2001-02-06 Ason Engineering, Ltd. Apparatus and method for producing non-woven webs with high filament velocity
US20030178741A1 (en) * 2001-04-06 2003-09-25 Minoru Hisada Production method and device for nonwoven fabric

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JPS5696908A (en) * 1980-01-04 1981-08-05 Teijin Ltd Melt spinning method
DE3318096C1 (de) 1983-05-18 1984-12-20 Automatik Apparate-Maschinenbau H. Hench Gmbh, 8754 Grossostheim Vorrichtung zum Kühlen von aus Spinndüsen extrudierten Kunststoffäden
ATA53792A (de) * 1992-03-17 1995-02-15 Chemiefaser Lenzing Ag Verfahren zur herstellung cellulosischer formkörper, vorrichtung zur durchführung des verfahrens sowie verwendung einer spinnvorrichtung
DE10141670A1 (de) * 2001-08-25 2003-03-06 Neumag Gmbh & Co Kg Vorrichtung zum Schmelzspinnen und Kühlen einer Filamentschar
CN1324173C (zh) * 2002-01-29 2007-07-04 苏拉有限及两合公司 用来冷却熔融纺造单丝的方法和熔融纺丝装置

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
US6183684B1 (en) * 1994-12-15 2001-02-06 Ason Engineering, Ltd. Apparatus and method for producing non-woven webs with high filament velocity
US20030178741A1 (en) * 2001-04-06 2003-09-25 Minoru Hisada Production method and device for nonwoven fabric

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100048853A1 (en) * 2006-07-10 2010-02-25 Sabic Innovative Plastics, Ip B.V. Polyetherimide polymer for use as a high heat fiber material
US8940209B2 (en) 2006-07-10 2015-01-27 Sabic Global Technologies B.V. Polyetherimide polymer for use as a high heat fiber material
US9416465B2 (en) * 2006-07-14 2016-08-16 Sabic Global Technologies B.V. Process for making a high heat polymer fiber
US20080012170A1 (en) * 2006-07-14 2008-01-17 General Electric Company Process for making a high heat polymer fiber
US20100229517A1 (en) * 2007-10-26 2010-09-16 Kan Fujihara Polyimide fiber mass, sound absorbing material, thermal insulating material, flame-retardant mat, filter cloth, heat resistant clothing, nonwoven fabric, heat insulation/sound absorbing material for aircraft, and heat resistant bag filter
US9617669B2 (en) * 2007-10-26 2017-04-11 Kaneka Corporation Method of making polyimide fiber assembly
CN102296426A (zh) * 2011-08-09 2011-12-28 温州朝隆纺织机械有限公司 用于生产双组分纺粘非织造布的设备及制造方法
US11528244B2 (en) 2012-01-13 2022-12-13 Kyndryl, Inc. Transmittal of blocked message notification
CN105612278A (zh) * 2013-09-26 2016-05-25 瑞来斯实业公司 用于使合成复丝纤维骤冷的系统、方法和设备
WO2015044953A1 (fr) * 2013-09-26 2015-04-02 Reliance Industries Limited Système, procédé et dispositif pour refroidir des fibres multifilaments synthétiques
TWI648441B (zh) * 2013-09-26 2019-01-21 瑞來斯實業公司 驟冷合成複絲纖維之系統、方法及裝置
US10323336B2 (en) * 2013-09-26 2019-06-18 Reliance Industries Limited System, method and device for quenching synthetic multifilament fibers
CN105821502A (zh) * 2016-05-27 2016-08-03 浙江显昱纤维织染制衣有限公司 一种纺丝机的冷却箱
US20220205156A1 (en) * 2018-05-28 2022-06-30 Michael Nitschke Manufacture of spunbonded nonwovens from continuous filaments
US11697897B2 (en) * 2018-05-28 2023-07-11 Reifenhaeuser Gmbh & Co. Kg Maschinenfabrik Manufacture of spunbonded nonwovens from continuous filaments

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Publication number Publication date
CN1844505B (zh) 2011-01-26
EP1710329A1 (fr) 2006-10-11
CN1844505A (zh) 2006-10-11
DE502006004562D1 (de) 2009-10-01
EP1710329B1 (fr) 2009-08-19

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Owner name: SAURER GMBH & CO. KG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:STUNDL, MATHIAS;KROPAT, HORST;MOOSHAMMER, ANTON;REEL/FRAME:017770/0755

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