EP1177336B1 - Öffnung und aufteilungsvorrichtung für ein filamentbündel beim herstellen einer vliesbahn - Google Patents

Öffnung und aufteilungsvorrichtung für ein filamentbündel beim herstellen einer vliesbahn Download PDF

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Publication number
EP1177336B1
EP1177336B1 EP00922703A EP00922703A EP1177336B1 EP 1177336 B1 EP1177336 B1 EP 1177336B1 EP 00922703 A EP00922703 A EP 00922703A EP 00922703 A EP00922703 A EP 00922703A EP 1177336 B1 EP1177336 B1 EP 1177336B1
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EP
European Patent Office
Prior art keywords
filaments
assembly
bundle
outlet
slot
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.)
Expired - Lifetime
Application number
EP00922703A
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English (en)
French (fr)
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EP1177336A1 (de
EP1177336B2 (de
Inventor
Rosario Maggio
Laurent Schmit
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Rieter Perfojet SAS
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Rieter Perfojet SAS
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Publication date
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Application filed by Rieter Perfojet SAS filed Critical Rieter Perfojet SAS
Publication of EP1177336A1 publication Critical patent/EP1177336A1/de
Publication of EP1177336B1 publication Critical patent/EP1177336B1/de
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Publication of EP1177336B2 publication Critical patent/EP1177336B2/de
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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
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/007—Addition polymers
    • 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
    • D04H3/009—Condensation or reaction polymers
    • 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
    • D04H3/009—Condensation or reaction polymers
    • D04H3/011—Polyesters
    • 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 present invention relates to an improvement made to installations allowing the manufacture of a nonwoven textile web, commonly referred to as the generic name of "spunbond", which is formed by synthetic filaments continuous.
  • It relates more particularly to an improvement brought to the means ensuring the distribution of the extruded filaments, after stretching, on a carpet mobile transporter on which they are distributed randomly so as to form a regular tablecloth, weight and thickness adjustable according to the applications.
  • the sheet is consolidated, for example by carrying out a sizing or calendering, preferably hot, so that the filaments. are linked to each other.
  • consolidation treatments can possibly be carried out, such as for example a needling treatment (conventional or by jets of fluid), and / or the deposition on the surface or inside of the sheet of a binder material.
  • the filaments come out of the slot drawing in the form of a bundle of filaments grouped in the median plane of said slot.
  • These filaments are ejected at very high speed from said stretching slot, speed up to 3000m / min or more depending on the condition.
  • This technology improves the formation of the veil when the filaments are ejected at relatively low speed from the drawing slot and that, by Consequently, the so-called “regrouping” phenomena of the filaments are preponderant compared to those of the rebound of the filaments on the carpet.
  • the veil consists of filaments relatively coarse, i.e. with a titer greater than or equal to 2.2 dtex per filament, filaments which are generally produced with velocities out of stretching slot less than 3000 ni / min.
  • the end of the stretching slot on which the device is fixed electrostatic is located at a relatively large distance from the receiving mat, on the order of 500 mm or more, so that the frictional forces of the filaments in the air slows down their speed, which limits rebound phenomena and thus improves the formation of the veil.
  • Such a device has however an efficiency limited, because it is mainly the fibers located on each side of the bundle that are thus “separated", those grouped in the center of said beam being extremely difficult to separate from each other.
  • the device for opening and distributing the bundle of filaments in accordance to the invention is constituted by an assembly arranged downstream of the outlet of the drawing assembly and dissociated from the latter, this assembly comprising, arranged at near the exit of the stretching slot, a diffuser comprising an area Convergent inlet extending over the entire width of the installation at look at the exit from the web production stretch, extended by a divergent, said assembly being associated with a ramp charging electrostatically the filaments before reception on the receiving belt.
  • the divergent zone of the diffuser comprises two walls and two side slots located at the top of said diffuser, of each side of it and allowing either a call for air from the outside by effect Venturi, possibly an injection of air, under a pressure below one bar and advantageously between 0.4 and 0.8 bar, causing a flow of the air against the walls of said diffuser.
  • the above diffuser allows precise adjustment of the beam width of fibers as well as the impact speed of the filaments on the receiving mat, the whole electrostatic charge possibly located downstream of the assembly diffuser, but preferably being integrated inside the latter, which allows to accentuate the opening of the bundle of filaments.
  • the device according to the invention is therefore intended to be used on a production line for a non-woven textile woven fabric consisting of continuous synthetic filaments.
  • such a line production therefore essentially consists of at least one extruder, designated by the general reference (1) supplying synthetic polymer such as polyamide, polyethylene, polyester ..., a sector (2) allowing the formation of a curtain of filaments (3).
  • the sector consists of a plate each comprising a multitude of holes, for example the number of 5000 per meter of width and having a diameter depending on the extruded filaments, by example of 0.5 mm. These holes are distributed over a plurality of parallel rows, for example eighteen rows and this, over a width at the outlet of the die of 140 mm.
  • a cooling assembly (4) allowing the regulation of the temperature of the filaments as a function of the polymers and composed for example of a plurality of successive zones (4a, 4b, 4c) making it possible to subject the curtain of filaments (3) to through air flows whose speed and temperature can be adjusted.
  • this cooling zone is of the order of 1200 mm and the temperature and speed of each zone decreases by first zone (4a) to the third zone (4c).
  • a stretching assembly Downstream of this cooling zone, a stretching assembly is arranged. proper (5) which is in the form of a closed enclosure comprising a slot (F) inside which air is injected under pressure, for example of the order of 0.5 bar.
  • Such a stretching system makes it possible to obtain the suction of the curtain of filaments and its entrainment by high speed air streams to ensure the draw.
  • the bundle of filaments (3) is projected on the receiving mat (7) by means of an assembly (6), an assembly which makes the subject of the invention and two embodiments of which emerge from Figures 2 and 3, and which causes a deflection of the air flow leaving the slot (5), a slowing down of this air flow thus causing the opening of the bundle of filaments.
  • such an assembly comprises, near the outlet of the drawing slot (F) of the assembly (5), a part, a diffuser, designated by the general reference (10) consisting essentially by a divergent which extends over the entire width of the production of the aquifer and, on the other hand, downstream of this opening assembly, a ramp (11) allowing electrostatically charge the filaments at the outlet of the assembly (10) an opening at the heart of said bundle of filaments before depositing them on the carpet receiver (7).
  • a diffuser designated by the general reference (10) consisting essentially by a divergent which extends over the entire width of the production of the aquifer and, on the other hand, downstream of this opening assembly, a ramp (11) allowing electrostatically charge the filaments at the outlet of the assembly (10) an opening at the heart of said bundle of filaments before depositing them on the carpet receiver (7).
  • the diffuser assembly (10) is composed essentially a chamber (12) having an internal slot (13) in the form of converging / diverging extending over the entire width of the installation opposite the exit from the stretching slot (F) of the assembly (5).
  • slots symmetrical (14) In this slot (13), open, near the lower part of the divergent zone, two symmetrical slots (14) arranged laterally. These slots symmetrical (14) can either be connected to a source of compressed air injected under a pressure of less than 1 bar and advantageously of the order of 0.4 bar, or just open to the air.
  • the divergent zone is, in this embodiment, extended by two walls (15) also divergent.
  • a conventional ramp (11) Immediately downstream of this diffuser assembly, or possibly integrated inside the latter, is arranged a conventional ramp (11) allowing to electrostatically charge the filaments thus making it possible to accentuate beam opening.
  • a ramp (11) is a conventional ramp, for example of the type described in US-A-3,967,118.
  • Figure 3 illustrates a second embodiment of an assembly opening and distributing a bundle of filaments in the form of a sheet produced in accordance with the invention.
  • the device for opening and distribution of the bundle of filaments (6) is, as previously, dissociated from the drawing assembly (5).
  • this embodiment also includes an entry area (13) in the form of a convergent extending opposite the outlet from the drawing slot (F).
  • This convergent entry zone (13) is connected to the two walls (15) of the divergent zone by a rectilinear slot (20).
  • the ramp (11) for electrostatically charging the filaments is, in this embodiment, integrated inside the diffuser, at the end of the rectilinear slot (20) immediately upstream of the diverging zone (15).
  • a call for air from outside by Venturi effect is made through two contiguous lateral slits formed by the underside of the assembly drawing (5) and the upper face of the opening and distribution assembly (6).
  • an injection of air, at low pressure, less than 1 bar, could be made at the two lateral slots formed between the drawing assembly (5) and the opening and distribution assembly (6).

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Claims (4)

  1. Vorrichtung, die es ermöglicht, die Öffnung und Aufteilung eines Filamentbündels bei der Herstellung einer Vliesbahn nach folgender Technik zu gewährleisten, darin bestehend:
    ein organisches geschmolzenes Polymer durch eine Ziehdüse, durch die Löcher gebohrt sind, zu extrudieren, um ein Bündel oder einen Vorhang von Filamenten zu bilden;
    dann die extrudierten Filamente durch Ziehen mittels einer oder mehrerer Fluidstrahlvorrichtungen (5) auszurichten;
    und schließlich das Filamentbündel in Form einer Bahn auf einem beweglichen Aufnahmeband aufzunehmen, unter dem eine Ansaugquelle angeordnet ist,
    dadurch gekennzeichnet, daß sie von einer Einheit (6) gebildet ist, die stromabwärts zu dem Ausgang der Zieheinheit (5) und von letzter getrennt angeordnet ist, wobei die Einheit in der Nähe des Ausgangs des Ziehschlitzes (F) angeordnet einen Verteiler (10) umfasst, der eine Eingangszone (13) in Form einer konvergierenden Zone umfasst, die sich über die gesamte Anlagenbreite gegenüber dem Ausgang des Ziehschlitzes (F) zur Herstellung der Bahn erstreckt und durch eine divergierende Zone (15) verlängert ist, wobei die Einheit mit einer Rampe (11) verbunden ist, die die Filamente vor der Aufnahme auf der Aufnahmebahn (7) elektrostatisch auflädt.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Verteiler (10) eine Eingangszone (13) in Form einer konvergierenden Zone umfasst, die mit zwei Wänden (15) der divergierenden Zone durch einen geradlinigen Schlitz (20) verbunden ist, wobei die Rampe (11), die die Filamente elektrostatisch auflädt, auf Höhe des geradlinigen Schlitzes direkt stromaufwärts zu der divergierenden Zone (15) befestigt ist.
  3. Vorrichtung nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß ein Luftzug durch Venturi-Effekt zwischen den gegenüber liegenden Flächen des Ausgangs des Ziehschlitzes (5) und des Eingangs der Verteilereinheit (6) hergestellt wird, der einen Luftstrom gegen die Wände (15) der divergierenden Zone erzeugt.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß eine Lufteinspritzung unter einem Druck von weniger als 1 bar zwischen den gegenüber liegenden Flächen des Ausgangs des Ziehschlitzes (5) und des Eingangs der Verteilereinheit (6) hergestellt wird.
EP00922703A 1999-04-23 2000-04-20 Öffnung und aufteilungsvorrichtung für ein filamentbündel beim herstellen einer vliesbahn Expired - Lifetime EP1177336B2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9905403A FR2792656B1 (fr) 1999-04-23 1999-04-23 Dispositif permettant d'assurer l'ouverture et la repartition d'un faisceau de filaments lors de la realisation d'une nappe textile non tissee
FR9905403 1999-04-23
PCT/FR2000/001050 WO2000065134A1 (fr) 1999-04-23 2000-04-20 Dispositif permettant d'assurer l'ouverture et la repartition d'un faisceau de filaments lors de la realisation d'une nappe textile non tissee

Publications (3)

Publication Number Publication Date
EP1177336A1 EP1177336A1 (de) 2002-02-06
EP1177336B1 true EP1177336B1 (de) 2003-08-20
EP1177336B2 EP1177336B2 (de) 2008-09-10

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ID=9544987

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00922703A Expired - Lifetime EP1177336B2 (de) 1999-04-23 2000-04-20 Öffnung und aufteilungsvorrichtung für ein filamentbündel beim herstellen einer vliesbahn

Country Status (12)

Country Link
US (1) US6966762B1 (de)
EP (1) EP1177336B2 (de)
JP (1) JP4549541B2 (de)
CN (1) CN1168855C (de)
AT (1) ATE247728T1 (de)
AU (1) AU4301300A (de)
DE (1) DE60004660T3 (de)
FR (1) FR2792656B1 (de)
IL (2) IL146029A0 (de)
PL (1) PL191426B1 (de)
TR (1) TR200103043T2 (de)
WO (1) WO2000065134A1 (de)

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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
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FR2825381B1 (fr) * 2001-05-31 2003-11-14 Rieter Perfojet Installation de production d'une nappe non tissee a poids tres regulier
ATE377107T1 (de) 2001-09-26 2007-11-15 Bba Nonwovens Simpsonville Inc Verfahren und vorrichtung zur herstellung einer vliesbahn aus filamenten
US8333918B2 (en) * 2003-10-27 2012-12-18 Kimberly-Clark Worldwide, Inc. Method for the production of nonwoven web materials
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US8032246B2 (en) * 2007-02-02 2011-10-04 Kimberly-Clark Worldwide, Inc. Winding method for uniform properties
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
US20100180558A1 (en) * 2007-05-31 2010-07-22 Toray Industries, Inc Nonwoven fabric for cylindrical bag filter, process for producing the same, and cylindrical bag filter therefrom
CN101092758B (zh) * 2007-06-05 2010-11-10 东华大学 非织造纺粘生产线模块式气流牵伸装置
EP2377978A1 (de) * 2010-04-19 2011-10-19 3B-Fibreglass SPRL Verfahren und Vorrichtung zur Ausbreitung von Fasersträngen
CN102720003A (zh) * 2012-05-15 2012-10-10 山东泰鹏无纺有限公司 提高涤纶纺粘非织造布均匀度的方法及静电分丝装置
KR101684119B1 (ko) 2015-05-28 2016-12-07 현대자동차주식회사 정전기를 이용한 pet 섬유와 케이폭 섬유의 혼섬장치 및 이를 이용한 혼섬방법
MY194243A (en) 2016-03-30 2022-11-24 Mitsui Chemicals Inc Apparatus for manufacturing non-woven fabric and method of manufacturing non-woven fabric
CN108884618B (zh) * 2016-03-30 2021-10-26 三井化学株式会社 非织造布的制造装置、非织造布的制造方法及非织造布
EP3382080B1 (de) * 2017-03-28 2019-08-07 Reifenhäuser GmbH & Co. KG Maschinenfabrik Verfahren und vorrichtung zur herstellung eines vlieses aus fasern
IT201700035017A1 (it) * 2017-03-30 2018-09-30 M A E S P A Metodo per l'apertura di un fascio di fibre tessili, preferibilmente fibre chimiche o inorganiche
CN109082776B (zh) * 2018-09-21 2024-01-16 溧阳市绿茵毯业有限公司 以长丝束丝饼为原料的分丝成网装置及实现方法
CN114000263B (zh) * 2021-11-22 2022-09-27 江苏英伟医疗有限公司 全自动生产抗落絮无纺布的方法及临床全防护医用手术单

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Also Published As

Publication number Publication date
AU4301300A (en) 2000-11-10
CN1168855C (zh) 2004-09-29
US6966762B1 (en) 2005-11-22
JP4549541B2 (ja) 2010-09-22
JP2002543299A (ja) 2002-12-17
PL350364A1 (en) 2002-12-02
FR2792656B1 (fr) 2001-06-01
ATE247728T1 (de) 2003-09-15
IL146029A0 (en) 2002-07-25
DE60004660T3 (de) 2009-04-02
EP1177336A1 (de) 2002-02-06
DE60004660T2 (de) 2004-06-17
IL146029A (en) 2006-06-11
WO2000065134A1 (fr) 2000-11-02
CN1348513A (zh) 2002-05-08
EP1177336B2 (de) 2008-09-10
TR200103043T2 (tr) 2002-04-22
FR2792656A1 (fr) 2000-10-27
DE60004660D1 (de) 2003-09-25
PL191426B1 (pl) 2006-05-31

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