EP0150024A2 - Dispositif pour la fabrication d'une nappe de fibres filée - Google Patents

Dispositif pour la fabrication d'une nappe de fibres filée Download PDF

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Publication number
EP0150024A2
EP0150024A2 EP85100268A EP85100268A EP0150024A2 EP 0150024 A2 EP0150024 A2 EP 0150024A2 EP 85100268 A EP85100268 A EP 85100268A EP 85100268 A EP85100268 A EP 85100268A EP 0150024 A2 EP0150024 A2 EP 0150024A2
Authority
EP
European Patent Office
Prior art keywords
pressure chamber
shaft
spun
filaments
melt
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.)
Withdrawn
Application number
EP85100268A
Other languages
German (de)
English (en)
Other versions
EP0150024A3 (fr
Inventor
Wolfgang Greiser
Hans Dr. Wagner
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.)
Hoechst AG
Original Assignee
Hoechst 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
Application filed by Hoechst AG filed Critical Hoechst AG
Publication of EP0150024A2 publication Critical patent/EP0150024A2/fr
Publication of EP0150024A3 publication Critical patent/EP0150024A3/fr
Withdrawn legal-status Critical Current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
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)

Definitions

  • the invention relates to a device for producing a spunbonded web by pneumatic drawing and depositing of melt-spun filaments, consisting of an overpressure chamber with outlet openings for the filaments, which is connected in a gastight manner to the melt spinning nozzle.
  • the diameter of these channels must be chosen to be relatively large in order to enable the piecing process, in which the freshly spun filaments are guided through the outlet openings with the aid of thin wires from the outlet end. This piecing process also prohibits longer channel lengths.
  • the object of the present invention is therefore to provide a device which is suitable for curtain spinning, i.e. a row arrangement of the spinneret holes is suitable and facilitates the start-up process.
  • the device according to the invention consists of a pressure chamber known per se below the row spinneret, which then tapers slightly conically to a drawing shaft 19 of constant width, which preferably has a length of more than 1 m.
  • the opening angle ⁇ of the weakly conical part 10 of the pressure chamber is preferably less than 7 °.
  • the air supply to the overpressure chamber is particularly preferably carried out by two horizontally arranged rows of blowing nozzles, consisting of sintered metal bodies, by means of which the air flow is preferably deflected in the direction of the thread.
  • the stretching shaft 19 with a constant width preferably contains an expanding end part 13 at its outlet end.
  • At least one side of the conical part 10 of the pressure chamber and the drafting shaft 19 is movable.
  • the device according to the invention is particularly suitable for curtain spinning systems with a linear arrangement of the spinneret holes over the entire width of the fleece, as described in DE-AS 20 48 006.
  • the device according to the invention then also extends over the entire width of the fleece. To start up, one of the two walls of the conical part 10 and the drafting shaft 19 is then folded away or pushed away.
  • the hyperbaric chamber is attached directly to the actual spinning system in a manner known per se.
  • the air supply 8 to the pressure chamber is arranged at a distance from the surface of the spinneret. The distance is chosen so large that the spinneret surface is no longer affected by the air blown in. For the same reason, a deflection of the flow in the thread running direction is also advantageous.
  • Such injection nozzles are state of the art and only have to be adapted to the special design of the spinning system for curtain spinning.
  • the opening angle a of the slightly tapered part 10 of the pressure chamber is chosen to be less than 7 ° in order to keep the air flow as steady as possible.
  • the subsequent drawing shaft 19 is used for drawing the filaments and, in order to transmit the required drawing forces there, usually has a length of more than 1 m.
  • the drafting shaft has a small width so that the free area per filament is approximately one square millimeter. In the nonwoven spinning system according to DE-OS 20 16 860, the free area in the channels is approximately 20 to 50 mm 2 .
  • a starting aid which, according to the invention, consists in that a longitudinal wall 12 of the drafting shaft 19 can be moved away. Depending on the spatial conditions, the longitudinal wall can be folded away or pushed sideways or lengthways. Special care must be taken to ensure that the closed shaft is properly sealed, since the thread curtain is sensitive to air swirls etc.
  • the overpressure in the chamber can be chosen to be much lower than the air pressure in an injector nozzle according to the prior art, for example according to the German laid-open specification 20 48 006. An overpressure of only 0.4 bar proved to be sufficient in the spinning installation shown in the example .
  • the small cross-sectional area of the thread curtain also requires only a small area of the filing belt that is extracted.
  • the air extracted there can be reused as stretching air after single or multi-stage compression.
  • the present invention thus combines the advantages of the spunbonded nonwoven system with a pressure chamber, i.e. the low air consumption and the good uniformity of the thread curtain over the width of the system with the advantages of spinning systems, which lead to a high orientation of the filaments through injector nozzles and drawing tubes.
  • FIG. 2 shows a section through the entire device for producing a spunbonded nonwoven.
  • the horizontal cross sections through the upper part 5 and the tapered part 10 of the pressure vessel and through the shaft 19 are each rectangles, the length of which depends on the width of the nonwoven web to be produced.
  • FIG. 3 shows an enlarged detail of FIG. 2, namely the transition from the tapering part of the pressure vessel to the shaft 19.
  • the starting position of the hydraulically movable shaft wall 12 is shown with dash-dotted lines.
  • a parallel displacement of part 12 from the closed position shown by solid lines by about 30 mm is sufficient for the threads to fall unimpeded onto the deposit belt 16 when spinning through the shaft 19 thus expanded.
  • a spunbonded nonwoven made of polyethylene terephthalate was produced using a device according to FIG.
  • the sliding wall 12 was moved 30 mm to the right. Only then were the spinning pumps switched on and the spun threads 9 fell easily onto the screen belt 16. The suction 18 and the running screen belt 16 ensured that the threads 9 were transported continuously. Only after the wall 12 had been closed did the pressure vessel reach a constant overpressure brought from 0.4 bar.
  • the air supplied at 8 was constantly regulated at 35 ° C and a dew point of 20 ° C.
  • the air speed immediately after the sintered metal bodies 7 was measured at 0.3 m / s.
  • the total area of the sintered metal body 7 was 0.6 m 2.
  • the width of the pressure vessel and the shaft (not shown in the drawing) was chosen to be 1.2 m so that the ends of the 104 cm wide thread curtain could not be impaired by edge effects of the flow in the shaft 19 . Threads with the following properties were thus spun:
  • the screen belt 16 had a speed of 76 m / min.
  • the suction 18 was set so that a vertical air flow of 4 m / s was generated in the storage area directly above the screen belt. Under these conditions an approximately 1 m wide fleece with a basis weight of 50 g / m 2 was obtained. Pre-consolidation was still achieved on the deposit belt by means of the heated roller 14 (190 ° C.) and the support roller 15. The uniformity of the nonwoven web produced was characterized by a coefficient of variation of the basis weight of 6% and was therefore very good. The diameter of the round measuring spot was 30 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
EP85100268A 1984-01-19 1985-01-12 Dispositif pour la fabrication d'une nappe de fibres filée Withdrawn EP0150024A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3401639 1984-01-19
DE19843401639 DE3401639A1 (de) 1984-01-19 1984-01-19 Vorrichtung zum herstellen eines spinnvlieses

Publications (2)

Publication Number Publication Date
EP0150024A2 true EP0150024A2 (fr) 1985-07-31
EP0150024A3 EP0150024A3 (fr) 1989-04-26

Family

ID=6225283

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85100268A Withdrawn EP0150024A3 (fr) 1984-01-19 1985-01-12 Dispositif pour la fabrication d'une nappe de fibres filée

Country Status (4)

Country Link
US (1) US4627811A (fr)
EP (1) EP0150024A3 (fr)
JP (1) JPS60155765A (fr)
DE (1) DE3401639A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2200145A (en) * 1987-01-21 1988-07-27 Reifenhaeuser Masch Production of a spun fleece
WO1991007530A3 (fr) * 1989-11-08 1991-06-27 Fiberweb North America Inc Procede et appareil destines a produire des fibres uniformement reparties a partir d'une balle de fibres filees et tissu non tisse ainsi obtenu
EP0637641A1 (fr) * 1993-08-02 1995-02-08 Fiberweb Sodoca Sarl Non-tissé à base de polymères dérivés de l'acide lactique, procédé de fabrication et utilisation d'un tel non-tissé
DE19924508C1 (de) * 1999-05-28 2000-11-30 Johns Manville Int Inc Vorrichtung zum Herstellen eines Spinnvlieses durch Spinnen aus einer Überdruckkammer
US6355772B1 (en) 1992-10-02 2002-03-12 Cargill, Incorporated Melt-stable lactide polymer nonwoven fabric and process for manufacture thereof
CN101027442B (zh) * 2004-09-24 2010-06-16 阿尔比斯有限公司 用来将合成纤维铺放成无纺布的装置

Families Citing this family (90)

* Cited by examiner, † Cited by third party
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US4780073A (en) * 1985-06-20 1988-10-25 Toray Industries, Inc. Apparatus for melt-spinning thermoplastic polymer fibers
US5141700A (en) * 1986-04-30 1992-08-25 E. I. Du Pont De Nemours And Company Melt spinning process for polyamide industrial filaments
DE3728002A1 (de) * 1987-08-22 1989-03-02 Freudenberg Carl Fa Verfahren und vorrichtung zur herstellung von spinnvliesen
US5244525A (en) * 1987-11-02 1993-09-14 Kimberly-Clark Corporation Methods for bonding, cutting and printing polymeric materials using xerographic printing of IR absorbing material
US5641822A (en) * 1989-09-18 1997-06-24 Kimberly-Clark Corporation Surface-segregatable compositions and nonwoven webs prepared therefrom
US5696191A (en) * 1989-09-18 1997-12-09 Kimberly-Clark Worldwide, Inc. Surface-segregatable compositions and nonwoven webs prepared therefrom
JPH0670300B2 (ja) * 1990-05-31 1994-09-07 米原 隆 無電界不織布成形法
US5149576A (en) * 1990-11-26 1992-09-22 Kimberly-Clark Corporation Multilayer nonwoven laminiferous structure
US5145727A (en) * 1990-11-26 1992-09-08 Kimberly-Clark Corporation Multilayer nonwoven composite structure
US5344862A (en) * 1991-10-25 1994-09-06 Kimberly-Clark Corporation Thermoplastic compositions and nonwoven webs prepared therefrom
CA2070589C (fr) * 1991-12-19 2000-11-28 Kimberly-Clark Corporation Methode de production de non-tisses en poly (alcool de vinyle)
US5244947A (en) * 1991-12-31 1993-09-14 Kimberly-Clark Corporation Stabilization of polyolefin nonwoven webs against actinic radiation
US5244723A (en) * 1992-01-03 1993-09-14 Kimberly-Clark Corporation Filaments, tow, and webs formed by hydraulic spinning
US5300167A (en) * 1992-01-03 1994-04-05 Kimberly-Clark Method of preparing a nonwoven web having delayed antimicrobial activity
US5283023A (en) * 1992-01-03 1994-02-01 Kimberly-Clark Corporation Method of imparting delayed wettability to a nonwoven web
DE4236514C2 (de) * 1992-10-26 1997-03-27 Fischer Karl Ind Gmbh Verfahren und Vorrichtung zur Förderung und Ablage von Scharen endloser Fäden mittels Luftkräften
US5382703A (en) * 1992-11-06 1995-01-17 Kimberly-Clark Corporation Electron beam-graftable compound and product from its use
US5455074A (en) * 1992-12-29 1995-10-03 Kimberly-Clark Corporation Laminating method and products made thereby
DE4319928C2 (de) * 1993-05-20 1997-05-07 Humanair Patentverwertung Gmbh Klima-Anlage für den Humanbereich
US5567372A (en) * 1993-06-11 1996-10-22 Kimberly-Clark Corporation Method for preparing a nonwoven web containing antimicrobial siloxane quaternary ammonium salts
DE4332345C2 (de) * 1993-09-23 1995-09-14 Reifenhaeuser Masch Verfahren und Vliesblasanlage zur Herstellung von einem Spinnvlies mit hoher Filamentgeschwindigkeit
DE4409940A1 (de) * 1994-03-23 1995-10-12 Hoechst Ag Verfahren zum Verstrecken von Filamentbündeln in Form eines Fadenvorhanges, dafür geeignete Vorrichtung sowie deren Verwendung zur Herstellung von Spinnvliesen
US5494855A (en) * 1994-04-06 1996-02-27 Kimberly-Clark Corporation Thermoplastic compositions and nonwoven webs prepared therefrom
DE4414277C1 (de) * 1994-04-23 1995-08-31 Reifenhaeuser Masch Nach dem Ruhedruckprinzip arbeitende Spinnvliesanlage für die Herstellung einer Nonwoven-Spinnvliesbahn
US5582632A (en) * 1994-05-11 1996-12-10 Kimberly-Clark Corporation Corona-assisted electrostatic filtration apparatus and method
US6380264B1 (en) 1994-06-23 2002-04-30 Kimberly-Clark Corporation Apparatus and method for emulsifying a pressurized multi-component liquid
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US6020277A (en) * 1994-06-23 2000-02-01 Kimberly-Clark Corporation Polymeric strands with enhanced tensile strength, nonwoven webs including such strands, and methods for making same
US6010592A (en) * 1994-06-23 2000-01-04 Kimberly-Clark Corporation Method and apparatus for increasing the flow rate of a liquid through an orifice
CA2149701A1 (fr) * 1994-10-12 1996-04-13 Kimberly-Clark Worldwide, Inc. Enveloppe de sterilisation
DE19504953C2 (de) * 1995-02-15 1999-05-20 Reifenhaeuser Masch Anlage für die Herstellung einer Spinnvliesbahn aus thermoplastischen Endlosfäden
JPH11501996A (ja) 1995-03-14 1999-02-16 キンバリー クラーク ワールドワイド インコーポレイテッド 湿潤可能物品
US5648041A (en) * 1995-05-05 1997-07-15 Conoco Inc. Process and apparatus for collecting fibers blow spun from solvated mesophase pitch
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DE19612142C1 (de) * 1996-03-27 1997-10-09 Reifenhaeuser Masch Anlage zur Herstellung einer Spinnvliesbahn aus Kunststoffilamenten
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KR100429700B1 (ko) * 1996-10-21 2004-07-16 코노코 인코퍼레이티드 용매화중간상피치에서블로우방사섬유를집속하는방법및장치
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2200145A (en) * 1987-01-21 1988-07-27 Reifenhaeuser Masch Production of a spun fleece
GB2200146A (en) * 1987-01-21 1988-07-27 Reifenhaeuser Masch Production of a spun fleece
GB2200146B (en) * 1987-01-21 1990-11-21 Reifenhaeuser Masch Production of spun fleece
GB2200145B (en) * 1987-01-21 1990-11-21 Reifenhaeuser Masch Production of spun fleece
WO1991007530A3 (fr) * 1989-11-08 1991-06-27 Fiberweb North America Inc Procede et appareil destines a produire des fibres uniformement reparties a partir d'une balle de fibres filees et tissu non tisse ainsi obtenu
US5225018A (en) * 1989-11-08 1993-07-06 Fiberweb North America, Inc. Method and apparatus for providing uniformly distributed filaments from a spun filament bundle and spunbonded fabric obtained therefrom
US6355772B1 (en) 1992-10-02 2002-03-12 Cargill, Incorporated Melt-stable lactide polymer nonwoven fabric and process for manufacture thereof
EP0637641A1 (fr) * 1993-08-02 1995-02-08 Fiberweb Sodoca Sarl Non-tissé à base de polymères dérivés de l'acide lactique, procédé de fabrication et utilisation d'un tel non-tissé
FR2709500A1 (fr) * 1993-08-02 1995-03-10 Fiberweb Sodoca Sarl Non-tissé à base de polymères dérivés de l'acide lactique, procédé de fabrication et utilisation d'un tel non-tissé.
DE19924508C1 (de) * 1999-05-28 2000-11-30 Johns Manville Int Inc Vorrichtung zum Herstellen eines Spinnvlieses durch Spinnen aus einer Überdruckkammer
CN101027442B (zh) * 2004-09-24 2010-06-16 阿尔比斯有限公司 用来将合成纤维铺放成无纺布的装置

Also Published As

Publication number Publication date
US4627811A (en) 1986-12-09
EP0150024A3 (fr) 1989-04-26
DE3401639A1 (de) 1985-07-25
JPS60155765A (ja) 1985-08-15

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