EP0223734A2 - Procédé de fabrication d'une nappe de filaments et appareil pour la mise en oeuvre du procédé - Google Patents

Procédé de fabrication d'une nappe de filaments et appareil pour la mise en oeuvre du procédé Download PDF

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Publication number
EP0223734A2
EP0223734A2 EP86730191A EP86730191A EP0223734A2 EP 0223734 A2 EP0223734 A2 EP 0223734A2 EP 86730191 A EP86730191 A EP 86730191A EP 86730191 A EP86730191 A EP 86730191A EP 0223734 A2 EP0223734 A2 EP 0223734A2
Authority
EP
European Patent Office
Prior art keywords
thread
nozzle
tube
compressed air
guide tube
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
EP86730191A
Other languages
German (de)
English (en)
Other versions
EP0223734A3 (en
EP0223734B1 (fr
Inventor
Kurt Mente
Gerhard Knitsch
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.)
JH Benecke GmbH
Corovin GmbH
Original Assignee
JH Benecke GmbH
Corovin GmbH
JP Bemberg AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6286443&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0223734(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by JH Benecke GmbH, Corovin GmbH, JP Bemberg AG filed Critical JH Benecke GmbH
Priority to AT86730191T priority Critical patent/ATE67800T1/de
Publication of EP0223734A2 publication Critical patent/EP0223734A2/fr
Publication of EP0223734A3 publication Critical patent/EP0223734A3/de
Application granted granted Critical
Publication of EP0223734B1 publication Critical patent/EP0223734B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • D04H3/03—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments at random
    • 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
    • Y10S239/00—Fluid sprinkling, spraying, and diffusing
    • Y10S239/07—Coanda

Definitions

  • the invention relates to a method for producing a nonwoven from continuous filaments according to the preamble of claim 1.
  • the invention also relates to a device for carrying out the method.
  • DE-PS 1 785 158, GB-PS 1 282 176 and GB-PS 1 297 582 already disclose methods and devices of the type assumed at the outset. In this case, a family of threads is guided from a melt and from spinnerets through a thread draw-off device which has a thread draw-off nozzle at its upper end. The latter is fed with highly compressed compressed air.
  • Laval extension At the narrowest annular gap of the thread take-off nozzle is the so-called Laval extension, at the outlet of which a negative pressure is generated. This negative pressure is also established at the inlet of the thread take-off nozzle via an inner thread-guiding tube and enables thread threading.
  • the laval extension is followed by a thread extraction tube with the inner diameter of the laval extension, into which air flows at supersonic speed.
  • a compression shock occurs with a subsequent subsonic flow, which further slows down in a subsequent thread guide tube with four to six times the cross-section.
  • the threads are drawn, which thereby become thinner.
  • the thread guide tube only has the task of transporting the thread sheet to a spreading nozzle and, where appropriate, to so-called Coanda shells in order to distribute and spread the threads evenly before they meet a base for forming the fleece.
  • the invention intervenes, which is based on the object of creating a method which, while maintaining the required thread pulling force, nevertheless enables a reduction in costs with regard to the required energy requirement.
  • the invention is intended to provide a device for performing such a method.
  • the method provided in the preamble of claim 1 provides that a gaseous propellant with lower pressure and volume is also supplied in the region of the outlet of the thread take-off device by means of an additional thrust nozzle, and that the inlet pressure and the inlet volume are simultaneously reduced.
  • the invention therefore takes the surprising route of additionally providing a thrust nozzle for feeding in with compressed air energy.
  • the invention is based on the finding that the compressed air energy supplied to the thread take-off nozzle can be reduced at the same time, while maintaining the original thread pulling force.
  • the energy saving at the thread take-off nozzle is greater than the energy additionally required at the thrust nozzle, so that overall energy savings and cost savings are achieved. Experiments have shown that considerable energy savings of almost 30% can be achieved.
  • Another serious advantage of the invention is that this energy saving device is achieved in a simple manner in that single between the lower end of the thread guide tube and the expanding nozzle Lich one component - namely a thrust nozzle - is used.
  • the dimensions and dimensions of the thread guide tube can be freely selected as long as the flow resistance of 0.01 bar is not exceeded.
  • the invention enables the compressed air pressure p 1 in front of the thread withdrawal nozzle to be reduced from 21 to 16 bar and the air quantity V 1 to be reduced from 72 to 52.4 Nm 3 / h with the same thread pulling force.
  • P2 1.9 bar.
  • Another advantage of the invention is that the thrust nozzle enables the thread guide tube to be shortened, the flow resistance of which is thus reduced. If the total flow resistance of the take-off device is observed, the length / diameter ratios already mentioned above can be achieved by lengthening the thread take-off tube.
  • filaments 10 are drawn in in the direction of arrow A by a thread draw-off nozzle 12 known per se.
  • the continuous filaments 10 are obtained in a conventional manner from a melt and passed through spinnerets, not shown in the drawing.
  • the thread take-off nozzle 12 has a compressed air connection 14 for supplying a quantity of compressed air V 1 under the pressure p 1 .
  • a thread take-off tube 16 connects to the thread take-off nozzle 12, and a thread guide tube 20 is connected via a transition cone 18.
  • the continuous threads 10 drawn off emerge at the bottom from an expansion nozzle 26 which is provided with Coanda shells 28.
  • Coanda effect is used to spread the threads 30 before they hit an air-permeable, sieve conveyor belt 32 which is under vacuum, whereby the fleece is formed.
  • the thread take-off force is generated predominantly in the thread take-off tube 16, which is flowed through at the supersonic speed in the first half and at the subsonic speed after the compression stroke.
  • the threads reach speeds of 30 to 100 m / s depending on the size of the thread titer.
  • the thread guide tube 20 conveys the thread family to a thrust nozzle 22 present in the new device, which is arranged between the thread guide tube 20 and the expanding nozzle 26 and has a compressed air connection 24, via which an air quantity V 2 is supplied at a low pressure P 2 .
  • the thread guide tube 20 is dimensioned so that the flow resistance is less than 0.01 bar.
  • Fig. 2 the detailed structure of the thrust nozzle 22 is shown, which is welded to the thread guide tube 20.
  • the thrust nozzle 22 comprises a first threaded part 34 which is screwed to a second threaded part 38 and is secured against rotation by a cylindrical pin 36.
  • the first threaded part 34 and the second threaded part 38 form a pipe extension 40.
  • a turn barer adjusting ring 42 which can be moved by rotation in the axial direction, as well as a jacket 48 and a conical transition piece 50, which is welded to the inlet of the expanding nozzle 26.
  • a prechamber 52 connects to the compressed air connection 24 already shown in FIG. 1 and is connected to a storage space 56 via bores 54.
  • the inner wall of the adjustment ring 42 forms a feed in the form of a lava extension 46 with an air outlet 44 from the storage space 56 to the thread guide space 60.
  • the narrowest cross-section is designated by reference numeral 58, and L indicates the length of the Laval extension 46.
  • the length L of the Laval extension 46 can be influenced by turning the adjusting ring 42.
  • the jacket 48 and the first threaded part 34 are fixed axially and radially.
  • the compressed air V 2 ; P2 flows through the compressed air connection 24 into the antechamber 52 and through the bores 54 into the storage space 56 and then through the narrowest cross-section 58 to the air outlet 44 or to the Laval extension 46.
  • the flow resistance of the thrust nozzle 22 is low to hold, the second threaded part 38 is flared at its end or outlet and the conical transition piece at its inlet.
  • the diameter of the thread take-off tube 16 is denoted by d 1 and the length by 1 1
  • d 2 and 1 2 indicate the diameter and the length of the thread guide tube 20.
  • the length / diameter ratios can be varied by switching on the thrust nozzle 22.
  • the ratio 1 1 / d 1 is approximately 110 in order to achieve an optimal thread pull-off force.
  • the thread guide tube 20 essentially determines the flow resistance, and here the ratio 12 / d2 is chosen such that the flow resistance already mentioned above is less than 0.01 bar results.
  • the ratio 12 / d2 is chosen such that the flow resistance already mentioned above is less than 0.01 bar results.
  • other values are also possible for the conditions mentioned within the scope of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP86730191A 1985-11-21 1986-11-21 Procédé de fabrication d'une nappe de filaments et appareil pour la mise en oeuvre du procédé Expired - Lifetime EP0223734B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86730191T ATE67800T1 (de) 1985-11-21 1986-11-21 Verfahren zur herstellung eines vlieses aus endlosfaeden und vorrichtung zur durchfuehrung des verfahrens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853541128 DE3541128A1 (de) 1985-11-21 1985-11-21 Verfahren zur herstellung eines vlieses aus endlosfaeden und vorrichtung zur durchfuehrung des verfahrens
DE3541128 1985-11-21

Publications (3)

Publication Number Publication Date
EP0223734A2 true EP0223734A2 (fr) 1987-05-27
EP0223734A3 EP0223734A3 (en) 1989-03-15
EP0223734B1 EP0223734B1 (fr) 1991-09-25

Family

ID=6286443

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86730191A Expired - Lifetime EP0223734B1 (fr) 1985-11-21 1986-11-21 Procédé de fabrication d'une nappe de filaments et appareil pour la mise en oeuvre du procédé

Country Status (6)

Country Link
US (2) US4847035A (fr)
EP (1) EP0223734B1 (fr)
JP (1) JPS62206072A (fr)
AT (1) ATE67800T1 (fr)
DE (2) DE3541128A1 (fr)
ES (1) ES2026463T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102560705A (zh) * 2012-01-13 2012-07-11 常州惠明精密机械有限公司 纺粘无纺布纺丝下拉伸装置

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5993943A (en) * 1987-12-21 1999-11-30 3M Innovative Properties Company Oriented melt-blown fibers, processes for making such fibers and webs made from such fibers
JP2887611B2 (ja) * 1990-01-27 1999-04-26 三井化学株式会社 不織布の製造方法及び装置
CA2038164C (fr) * 1990-03-14 1999-02-09 Keiji Kobayashi Pistolet pneumatique pour la production de tissu non tisse et appareil de production connexe
JP2842677B2 (ja) * 1990-08-27 1999-01-06 三井化学株式会社 不織布製造用エアガン
US5421064A (en) * 1991-04-09 1995-06-06 Mitsui Petrochemical Industries, Ltd. Filaments dispersing device
DE4414277C1 (de) * 1994-04-23 1995-08-31 Reifenhaeuser Masch Nach dem Ruhedruckprinzip arbeitende Spinnvliesanlage für die Herstellung einer Nonwoven-Spinnvliesbahn
US5667749A (en) * 1995-08-02 1997-09-16 Kimberly-Clark Worldwide, Inc. Method for the production of fibers and materials having enhanced characteristics
US5711970A (en) * 1995-08-02 1998-01-27 Kimberly-Clark Worldwide, Inc. Apparatus for the production of fibers and materials having enhanced characteristics
US5811178A (en) * 1995-08-02 1998-09-22 Kimberly-Clark Worldwide, Inc. High bulk nonwoven sorbent with fiber density gradient
CA2238440C (fr) * 1995-12-15 2004-07-27 Kimberly-Clark Worldwide, Inc. Soupape rotative a grande vitesse pour hautes temperatures
US6013223A (en) * 1998-05-28 2000-01-11 Biax-Fiberfilm Corporation Process and apparatus for producing non-woven webs of strong filaments
US7018188B2 (en) * 2003-04-08 2006-03-28 The Procter & Gamble Company Apparatus for forming fibers
WO2008087193A2 (fr) * 2007-01-19 2008-07-24 Oerlikon Textile Gmbh & Co. Kg Appareil et procédé pour déposer des fibres synthétiques et former une bande non tissée
US20080217422A1 (en) * 2007-03-09 2008-09-11 Daniel Elden Near Nozzle assembly, delivery system and method for conveying insulation material
EP2464764A1 (fr) 2009-08-14 2012-06-20 The Procter & Gamble Company Ensemble filière de filature et procédé de formation de fibres au moyen de cet ensemble
US20110076907A1 (en) * 2009-09-25 2011-03-31 Glew Charles A Apparatus and method for melt spun production of non-woven fluoropolymers or perfluoropolymers

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3094262A (en) * 1960-11-25 1963-06-18 Du Pont Improved yarn handling sucker gun
US3485428A (en) * 1967-01-27 1969-12-23 Monsanto Co Method and apparatus for pneumatically depositing a web
DE1785158C3 (de) * 1968-08-17 1979-05-17 Metallgesellschaft Ag, 6000 Frankfurt Runddiise zum Abziehen und Ablegen von Fäden zu einem Fadenvlies
DE1950669C3 (de) * 1969-10-08 1982-05-13 Metallgesellschaft Ag, 6000 Frankfurt Verfahren zur Vliesherstellung
DE2053918B2 (de) * 1970-11-03 1976-09-30 Basf Farben + Fasern Ag, 2000 Hamburg Verfahren und vorrichtung zur herstellung gekraeuselter faeden aus synthetischen hochpolymeren
US3738894A (en) * 1971-09-28 1973-06-12 Allied Chem Foraminal apparatus for splaying and depositing nonwoven filamentary structures
US3776796A (en) * 1971-09-28 1973-12-04 Allied Chem Process and apparatus for production of a nonwoven web
US3734803A (en) * 1971-09-28 1973-05-22 Allied Chem Apparatus for splaying and depositing nonwoven filamentary structures
US3736211A (en) * 1971-09-28 1973-05-29 Allied Chem Two-planar deflector for dispersing and depositing nonwoven filamentary structures
DE2200782A1 (de) * 1972-01-08 1973-08-02 Metallgesellschaft Ag Verfahren und vorrichtung zum herstellen eines vlieses aus endlosfaeden
JPS499436A (fr) * 1972-05-26 1974-01-28
DE2421401C3 (de) * 1974-05-03 1982-12-09 J.H. Benecke Gmbh, 3000 Hannover Vorrichtung zum Verteilen eines Fadenbündels bei der Spinnvlies-Herstellung
US4346504A (en) * 1980-07-11 1982-08-31 Hoechst Fibers Industries Yarn forwarding and drawing apparatus
US4322027A (en) * 1980-10-02 1982-03-30 Crown Zellerbach Corporation Filament draw nozzle
JPS60151357A (ja) * 1984-01-12 1985-08-09 東レ株式会社 繊維ウェブの製造方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102560705A (zh) * 2012-01-13 2012-07-11 常州惠明精密机械有限公司 纺粘无纺布纺丝下拉伸装置
CN102560705B (zh) * 2012-01-13 2014-12-03 常州惠明精密机械有限公司 纺粘无纺布纺丝下拉伸装置

Also Published As

Publication number Publication date
DE3541128C2 (fr) 1989-08-17
EP0223734A3 (en) 1989-03-15
US4964197A (en) 1990-10-23
US4847035A (en) 1989-07-11
EP0223734B1 (fr) 1991-09-25
DE3681692D1 (de) 1991-10-31
JPS62206072A (ja) 1987-09-10
ES2026463T3 (es) 1992-05-01
DE3541128A1 (de) 1987-05-27
ATE67800T1 (de) 1991-10-15
JPH0140142B2 (fr) 1989-08-25

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