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EP2135980A2 - Dispositif d'étirage de filaments - Google Patents

Dispositif d'étirage de filaments Download PDF

Info

Publication number
EP2135980A2
EP2135980A2 EP09162198A EP09162198A EP2135980A2 EP 2135980 A2 EP2135980 A2 EP 2135980A2 EP 09162198 A EP09162198 A EP 09162198A EP 09162198 A EP09162198 A EP 09162198A EP 2135980 A2 EP2135980 A2 EP 2135980A2
Authority
EP
European Patent Office
Prior art keywords
guide means
slot
conveying direction
bores
nozzle
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.)
Granted
Application number
EP09162198A
Other languages
German (de)
English (en)
Other versions
EP2135980A3 (fr
EP2135980B1 (fr
Inventor
Holger SCHÖTTLER
Dimitrios Sapouridis
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
Oerlikon Textile 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 Oerlikon Textile GmbH and Co KG filed Critical Oerlikon Textile GmbH and Co KG
Publication of EP2135980A2 publication Critical patent/EP2135980A2/fr
Publication of EP2135980A3 publication Critical patent/EP2135980A3/fr
Application granted granted Critical
Publication of EP2135980B1 publication Critical patent/EP2135980B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion

Definitions

  • the invention relates to a device for removing a plurality of filaments according to the preamble of claim 1.
  • a molten polymer fed from an extruder is spun in a spinning beam through a plurality of nozzle bores arranged in one or more rows in a row to form a multiplicity of filaments and then cooled by means of a cooling device.
  • a pulling force is exerted by a device disposed at a distance thereunder, the pull-off nozzle in the form of a slot, which effects a drawing and conveying of the filaments.
  • compressed air flows in the conveying direction of the filaments from the inner wall of the draw-off nozzle, whereby the desired tensile force is exerted on the filaments.
  • the filaments settle on a conveyor belt arranged below the discharge nozzle in random position and form the fleece there.
  • a finger strip with a castellated cross-section extending over the width of the draw-off nozzle is provided on the outlet side of the draw-off nozzle.
  • a further object of the invention is to ensure the flexible adaptability of the draw-off nozzle to different process parameters, so that an optimal setting is more easily achieved.
  • the discharge nozzle on its underside on a conducting means which extends over the length of the slot on the outlet side.
  • This guide means is provided with a plurality of bores, which connect the exit area with the environment, thus allowing the passive exchange of air.
  • guide means with bores are provided on both sides of the slot.
  • the conducting means In a particularly advantageous embodiment of the invention is one of the conducting means or are both conducting means with respect to their angle to the conveying direction adjustable.
  • the effect of the conductive agent can be adjusted very sensitively and thus optimally adapted to the process.
  • a preferred embodiment of the invention includes a plurality of rows of holes in which the holes are introduced.
  • a part of the holes above and another part of the holes below the lower edge of the opposite guide means is arranged.
  • a likewise uniform flow is achieved when provided below the holes inside grooves without connection to the holes.
  • the holes are led out transversely to the conveying direction at an angle of 10 to 60 ° obliquely.
  • the lateral velocity component of the incoming air exerts a spin on the filaments, which favors the formation of the random orientation.
  • a further embodiment provides in the conveying direction obliquely arranged holes, which are provided in or against the conveying direction at an angle between 10 and 60 °. As a result, a targeted inflow or outflow of the air can be supported.
  • FIG. 1 the device according to the invention for melt-spinning and stripping filaments to a spunbonded fabric is shown.
  • a melt source 1 for example an extruder
  • molten polymer is fed via the melt line 2 to a spinning device 3.
  • the spinning device 3 does not include here a pump for increasing the pressure and metering of the melt.
  • spinnerets 4 are provided, through which the melt is extruded into thin filaments that leave the spinning device 3 in the form of a filament 5.
  • the spinnerets 4 can be introduced, for example, in several spinneret plates, which are arranged perpendicular to the plane one behind the other. They are perpendicular to the drawing plane order of magnitude more spinnerets 4 than in the plane and in FIG. 1 shown.
  • the filament bundle 5 thus has the form of a curtain which extends perpendicular to the plane of the drawing.
  • the trigger nozzle 6 which also extends perpendicular to the plane across the width of the filament 5.
  • the draw-off nozzle 6 may be a cooling device.
  • the task of the draw-off nozzle 6 is to exert a pulling force on the filament bundle 5 and to convey it.
  • the filament bundle 5 is guided through a funnel-shaped inlet region 7 into the take-off region 8.
  • a compressed air supply 9 is provided on both sides, is supplied via the compressed air, which is guided at an acute angle in the take-off area and there exerts a tensile force on the filament bundle.
  • the deduction area 8 forms a slot 10 which extends perpendicular to the plane of the drawing.
  • a conveyor belt 19 is provided, on which the filament bundle is deposited and transported to a fleece 18.
  • the guide means 13 and 15 by means of the receptacles 11 and 12 are attached.
  • the optional receptacles 11 and 12 thereby enable the fast and flexible mounting of the guide means 13 and 15.
  • the guide means 13 and 15 can be easily exchanged for other guide means with deviating geometry and adapted to changing process parameters.
  • the guide means 13 and 15 are positioned so that the slot 10 continues below the take-off area.
  • the guide means 13 has perpendicular to the plane of a plurality of grooves 14 which extend in the conveying direction of the discharge nozzle, wherein the groove depth in Conveying direction increased. As a result, a more uniform outflow of air is achieved from the discharge nozzle 6, so that the filaments are distributed more uniformly on the conveyor belt 19 and thus a more uniform web 18 is generated.
  • a further conducting means 15 in the form of a thin-walled strip with a plurality of bores 16 is provided opposite the conducting means 13.
  • the holes 16 connect the space below the take-off area 8 of the discharge nozzle 6 with the environment and thus allow an exchange of air with the environment. As a result, an aerodynamically particularly uniform transition from the take-off region 7 to the environment is achieved. Due to the double-row arrangement of the rows of holes 16 shown here, wherein the lower rows of holes are positioned below the lower edge 20 of the guide means 13, this air exchange can take place particularly uniformly.
  • 2 conducting means 15 with bores 16 can also be arranged on both sides of the slot 10.
  • FIG. 2 Once again, the two conducting means 13 and 15 are off FIG. 1 shown.
  • the arrangement of the holes 16 in the guide means 15 opposite to in FIG. 1 shown arrangement is a variant.
  • three rows of holes are provided, which are each arranged above the lower edge 20 of the guide means 14.
  • the guide means 13 has a plurality of grooves 14 and webs 27. Parallel to the increasing in the conveying direction depth of the grooves 14 widen the webs 27 in the form of a dovetail.
  • Tapped holes 28 in the guide 15 and not visible here in the guide 14 allow easy installation of the conductive means.
  • FIG. 3 shows a variant of the receptacle 12 FIG. 1 ,
  • the joint receptacle 21 shown here has a joint 22 which rotatably supports the guide means 15.
  • FIG. 4 shows a particularly advantageous arrangement of the rows of holes in a plan view. Experiments have shown that with this arrangement particularly uniform nonwovens can be produced when three rows of holes above and three rows of holes below the lower edge 20 of the guide 13 are arranged.
  • FIG. 5 shows an embodiment of the bores 16, which have a conical outlet opening 23. As a result, the air flowing through the holes 16 air is evenly distributed in the lower region of the slot 10.
  • FIG. 6 shows the view of an alternative embodiment of the guide means 15 in the conveying direction.
  • the holes 16 are arranged opposite to the orthogonal 26 of the guide means 15 rotated at an angle ⁇ .
  • a swirl effect can be exerted on the filaments.
  • FIG. 7 shows a further alternative embodiment of the guide means 15.
  • the upper row of holes is aligned in the conveying direction relative to the orthogonal 26 of the guide means 15 at an inflow angle ⁇ , the lower row of holes at an oppositely directed outflow angle ⁇ .
  • FIGS. 8 and 9 represent a further development of the conductive agent 15.
  • the lower row of holes is provided with grooves 24 which are directly connected to the lower holes 16.
  • the incoming air can be evenly distributed over the length of the slot 10.
  • the grooves 25 are arranged at a distance below the rows of holes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Nonwoven Fabrics (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP09162198A 2008-06-21 2009-06-08 Dispositif d'étirage de filaments Not-in-force EP2135980B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008029550A DE102008029550A1 (de) 2008-06-21 2008-06-21 Vorrichtung zum Abziehen von Filamenten

Publications (3)

Publication Number Publication Date
EP2135980A2 true EP2135980A2 (fr) 2009-12-23
EP2135980A3 EP2135980A3 (fr) 2010-07-07
EP2135980B1 EP2135980B1 (fr) 2011-08-17

Family

ID=41152050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09162198A Not-in-force EP2135980B1 (fr) 2008-06-21 2009-06-08 Dispositif d'étirage de filaments

Country Status (5)

Country Link
US (1) US8186986B2 (fr)
EP (1) EP2135980B1 (fr)
CN (1) CN101608380B (fr)
AT (1) ATE520805T1 (fr)
DE (1) DE102008029550A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2584076A1 (fr) * 2011-10-22 2013-04-24 Oerlikon Textile GmbH & Co. KG Dispositif et procédé de guidage et de dépôt de filaments synthétiques dans une étoffe

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8246898B2 (en) * 2007-03-19 2012-08-21 Conrad John H Method and apparatus for enhanced fiber bundle dispersion with a divergent fiber draw unit
CN103789927B (zh) * 2014-01-24 2017-02-15 廊坊中纺新元无纺材料有限公司 一种纺丝成网法非织造布的制造方法
US20240025664A1 (en) * 2022-07-22 2024-01-25 Lawrence Equipment Inc. Continuous conveyor belt

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060172024A1 (en) 2003-11-17 2006-08-03 Nordson Corporation Stabilized filament drawing device for a meltspinning apparatus and meltspinning apparatus including such stabilized filament drawing devices

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3766606A (en) * 1972-04-19 1973-10-23 Du Pont Apparatus for forwarding tow
US6379136B1 (en) * 1999-06-09 2002-04-30 Gerald C. Najour Apparatus for production of sub-denier spunbond nonwovens
FR2815647B1 (fr) * 2000-10-20 2003-02-14 Rieter Perfojet Installation de production d'une nappe non tissee a difusseur et a separation des filaments par voie electrostatique
FR2825381B1 (fr) * 2001-05-31 2003-11-14 Rieter Perfojet Installation de production d'une nappe non tissee a poids tres regulier
EP1510603A4 (fr) * 2002-06-03 2006-12-13 Toray Industries Dispositif et procede de fabrication de fil
US7320581B2 (en) * 2003-11-17 2008-01-22 Aktiengesellschaft Adolph Saurer Stabilized filament drawing device for a meltspinning apparatus
JP4419685B2 (ja) * 2004-05-31 2010-02-24 東レ株式会社 不織布の製造方法および不織布製造装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060172024A1 (en) 2003-11-17 2006-08-03 Nordson Corporation Stabilized filament drawing device for a meltspinning apparatus and meltspinning apparatus including such stabilized filament drawing devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2584076A1 (fr) * 2011-10-22 2013-04-24 Oerlikon Textile GmbH & Co. KG Dispositif et procédé de guidage et de dépôt de filaments synthétiques dans une étoffe

Also Published As

Publication number Publication date
EP2135980A3 (fr) 2010-07-07
DE102008029550A1 (de) 2009-12-24
ATE520805T1 (de) 2011-09-15
US20090317505A1 (en) 2009-12-24
US8186986B2 (en) 2012-05-29
CN101608380A (zh) 2009-12-23
CN101608380B (zh) 2012-04-11
EP2135980B1 (fr) 2011-08-17

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