EP2009163A1 - Dispositif destiné à la fabrication de matières non tissées - Google Patents

Dispositif destiné à la fabrication de matières non tissées Download PDF

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Publication number
EP2009163A1
EP2009163A1 EP07012793A EP07012793A EP2009163A1 EP 2009163 A1 EP2009163 A1 EP 2009163A1 EP 07012793 A EP07012793 A EP 07012793A EP 07012793 A EP07012793 A EP 07012793A EP 2009163 A1 EP2009163 A1 EP 2009163A1
Authority
EP
European Patent Office
Prior art keywords
diverging
cooling chamber
filaments
channel walls
section
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
EP07012793A
Other languages
German (de)
English (en)
Other versions
EP2009163B1 (fr
Inventor
Hans-Georg Geus
Detlef Frey
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.)
Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Original Assignee
Reifenhaeuser GmbH and Co KG Maschinenenfabrik
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 Reifenhaeuser GmbH and Co KG Maschinenenfabrik filed Critical Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Priority to DK07012793.1T priority Critical patent/DK2009163T3/da
Priority to ES07012793.1T priority patent/ES2440244T3/es
Priority to EP07012793.1A priority patent/EP2009163B1/fr
Priority to PL07012793T priority patent/PL2009163T3/pl
Priority to IL192000A priority patent/IL192000A/en
Priority to CA2635329A priority patent/CA2635329C/fr
Priority to JP2008165256A priority patent/JP5094588B2/ja
Priority to US12/146,573 priority patent/US7762800B2/en
Priority to CN2008101317808A priority patent/CN101333730B/zh
Priority to BRPI0803610-1A priority patent/BRPI0803610B1/pt
Publication of EP2009163A1 publication Critical patent/EP2009163A1/fr
Application granted granted Critical
Publication of EP2009163B1 publication Critical patent/EP2009163B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D04H3/08—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
    • 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 spunbonded non-wovens from filaments.
  • the filaments are usually made of thermoplastic material.
  • the filaments are first spun using a spinning device and then passed through a cooling chamber usually. Following the cooling, the filaments enter the filament bundle and enter the drawing channel of a drawing unit in which the filaments are aerodynamically stretched.
  • the gap width of the stretching channel in the machine direction or in the conveying direction of the spunbonded nonwoven is normally 10 to 20 mm here. Due to these relatively small geometric gap dimensions, the filament bundle is compacted relatively strong in the drawing unit. This has the disadvantageous consequence that the filaments are relatively difficult to separate again in many known systems and can be deposited as individual filaments.
  • the invention is based on the technical problem of specifying a device of the aforementioned type, with which the filament bundle produced can be separated into single filaments in a simple and effective manner, which individual filaments can then be deposited to form the spunbonded nonwoven web.
  • the invention teaches a device for the continuous production of spunbonded filaments, wherein a spinning device is provided for the production of the filaments, wherein the spinning device is followed by a cooling chamber in which process air is supplied for cooling the filaments, wherein a stretching unit for the drawing of the filaments is connected to the cooling chamber, and wherein the connection region between the cooling chamber and drawing unit is designed to be closed, wherein the drawing unit has a drafting channel whose channel walls are divergently arranged / formed over at least part of the length of the drawing channel and wherein a depositing device is provided for depositing the filaments to the spunbonded nonwoven web.
  • Spinning means in particular a spinnerette for spinning the filaments. These spun filaments are then passed through the cooling chamber, in which the cooling of the filaments takes place.
  • the cooling chamber is a closed chamber which, apart from the process air supply and apart from the inlet opening and outlet opening, is closed or essentially closed for the filament family.
  • the connection region between the cooling chamber and the stretching unit is designed to be closed. In the connection region or transition region between the cooling chamber and the stretching unit, therefore, according to the invention, there is no supply of air or substantially no supply of air into the system or into the flow path of the filaments.
  • channel walls of the drawing channel are designed to be divergent means, within the scope of the invention, in particular that the channel walls arranged transversely to the machine direction or transversely to the conveying direction of the spunbonded web are arranged / formed divergently.
  • the distance between these channel walls increases in this diverging section in the direction of the depositing device out.
  • the length of the drawing channel also refers to the extension of the drawing channel between the cooling chamber and the laying device.
  • the diverging part of the stretching channel will also be referred to below as a diverging Verstreckkanalab Songs or short as a diverging section.
  • a very preferred embodiment of the invention is characterized in that the cooling chamber is subdivided into at least two cooling chamber sections, in which the filaments can each be cooled with process air of different temperature.
  • This particular embodiment has proven particularly useful in the context of the invention.
  • the temperature of the supplied process air in the first upper cooling chamber section is higher than the temperature of the supplied process air in the lower second cooling chamber section.
  • First upper cooling chamber section refers to the cooling chamber section into which the filaments enter first.
  • connection region between the cooling chamber and the stretching unit is designed to be closed.
  • the drafting unit is thus connected to the cooling chamber with the proviso that no air inlet or substantially no air inlet takes place in the connection area between the cooling chamber and the drafting unit.
  • the stretching unit can be connected directly to the cooling chamber and free of air supply gaps.
  • an intermediate channel is arranged between the cooling chamber and the drawing unit. It is within the scope of the invention that in this intermediate channel no air from the outside or substantially no air is introduced from the outside. This means that in the intermediate channel only the process air is introduced from the cooling chamber and otherwise no air supply or substantially no air supply from the outside.
  • the intermediate channel extends converging from the cooling chamber to the drawing unit.
  • the transversely to the machine direction or transversely to the conveying direction of the spunbonded web arranged intermediate channel walls are arranged converging.
  • the intermediate channel thus tapers from the cooling chamber to the drawing unit.
  • different convergence angles of the intermediate channel can be set. It is within the scope of the invention that the lower end of the intermediate channel is connected to the drawing channel of the drawing unit in an air-feed gap-free manner or substantially free of air feed gap. Then only the process air (with the filaments) and otherwise no additional air or substantially no additional air from the intermediate channel into the Verstreckkanal.
  • the air injection is expediently with the proviso that the filament bundle is widened in the machine direction or in the conveying direction of the spunbonded web.
  • the procedure is preferably such that the opening angle of the filament bundle of 0.1 to 10 °, preferably from 0.1 to 1 ° can be achieved.
  • the statement "at the beginning of the diverging Verstreckkanalabites” means in particular that with respect to the length of divergent Verstreckkanalabimposings first third, preferably the first quarter and more preferably the first fifth of the diverging Verstreckkanalabroughs.
  • the distance of the channel walls of the drawing channel is suitably 5 to 30 mm, preferably 8 to 25 mm and preferably 10 to 20 mm.
  • At least a quarter, preferably at least one third, of the length of the drawing channel is divergent or designed as a diverging section.
  • at least 40% of the length of the drawing channel is divergent or designed as a diverging section.
  • the Verstreckkanal over a portion of its length parallel channel walls (parallel section) and at this parallel section then connect diverging channel walls (divergent section). It is within the scope of the invention that the Verstreckkanal consists in this embodiment exclusively of said parallel section and the adjoining diverging section. The additional air supply takes place in this embodiment either at the end of the parallel section or at the beginning of the diverging section of the Verstreckkanals.
  • the end of the parallel section means, in particular, the last third, preferably the last quarter, and very preferably the last fifth, of the parallel section, with respect to the length of the parallel section.
  • the divergent section means here and below in particular the first third with respect to the length of the diverging section, preferably the first quarter, and very preferably the first fifth of the diverging section.
  • the diverging portion of this embodiment is longer than the parallel portion, and the diverging portion is desirably at least 1.5 times as long as the parallel portion.
  • the drafting channel has converging channel walls over a part of its length (converging section) and adjoining the diverging channel walls (divergent section).
  • the Verstreckkanal in this embodiment consists solely of the convergent and the diverging section.
  • the diverging section thus directly adjoins the convergent section.
  • the additional air supply in this embodiment is expediently carried out in the transition region between the convergent section and diverging section or at the beginning of the diverging section.
  • the diverging portion is longer than the converging portion, and preferably, the diverging portion is at least 1.5 times as long as the converging portion.
  • the drafting channel has converging channel walls over a part of its length (converging section), connecting thereto parallel channel walls (parallel section) and, in turn, connecting divergent channel walls (diverging section).
  • the drafting channel here consists exclusively of the convergent section, the adjoining parallel section and the subsequent diverging section. Basically, to the the last mentioned diverging section but also a second parallel section.
  • the additional air supply in this embodiment is expediently carried out at the end of the (first) parallel section or at the beginning of the divergent section.
  • End of the parallel section means with respect to the length of the parallel section in particular the last third, preferably the last quarter and very preferably the last fifth of the parallel section.
  • the divergent section be the longest channel section. This means that the divergent section is longer than the parallel section and longer than the convergent section. According to a particularly recommended embodiment variant, the divergent section is longer than the entire channel section of converging and parallel section.
  • the diverging channel walls of the diverging portion are arranged symmetrically with respect to a vertically extending through the Verstreckkanal center plane.
  • the diverging channel walls can be arranged asymmetrically with respect to this center plane. Then one of the two diverging channel walls would then have a greater inclination or inclination than the other opposing channel wall.
  • the divergence angle of the diverging section remains constant over the length of the diverging section. In principle, however, it is also possible for the divergence angle to change over the length of the divergent section.
  • the cooling chamber and drawing unit of the device according to the invention form a closed unit.
  • the air supply is limited in the aggregate of cooling chamber and Stretching at least substantially on the introduction of the process air in the cooling chamber on the one hand and on the additional air supply before the diverging section or at the beginning of the diverging section in the Verstreckkanal other hand.
  • air with the filament bundle can reach the cooling chamber from above.
  • a particular embodiment of the invention has special significance in the context of the invention is characterized in that the extension unit is followed by a laying unit with at least one diffuser.
  • the filaments or the filament bundle are thus guided after the drawing unit through at least one diffuser.
  • a diffuser has at least partially diverging diffuser walls. The diffuser walls are arranged transversely to the machine direction or transversely to the conveying direction of the spunbonded web.
  • the laying unit consists of a first diffuser and an adjoining second diffuser.
  • an ambient air inlet gap is provided between the first diffuser and the second diffuser. Due to the exit pulse from the first diffuser, air is drawn in from the environment through this ambient air inlet gap.
  • the width of the ambient air inlet gap is adjustable.
  • the depositing device of the device according to the invention is a continuously moving Ablegesiebband for the spunbonded web.
  • at least one suction device is provided under the Ablegesiebband, with the air through the Ablegesiebband is sucked.
  • the invention is based on the finding that with the device according to the invention, very high quality spunbonded nonwovens can be produced, which are characterized in particular by a homogeneous structure and homogeneous properties distinguished.
  • the invention is based in particular on the finding that undesirable compaction of the filament bundle can be avoided by the inventive design of the stretching unit, or that compacting already carried out can be largely reversed.
  • an effective separation into individual filaments can take place.
  • the embodiment according to the invention is thus achieved that a high number of filaments in the form of individual filaments can be stored.
  • the quality of the spunbonded nonwoven produced according to the invention can be considerably increased in comparison to spunbonded nonwovens produced with known devices.
  • the success of the invention can be realized by relatively simple and cost-effective measures. As a result, high-quality spun-bonded nonwovens having uniform or homogeneous structural properties can be obtained.
  • the figures show an apparatus for the continuous production of spunbonded nonwovens from aerodynamically stretched filaments of thermoplastic material.
  • the device has a spinnerette 1 for producing the filaments.
  • the spinnerette 1 is connected downstream of a cooling chamber 2, is supplied in the process air for cooling the filaments.
  • the cooling chamber 2 is preferably and in the exemplary embodiment divided into two cooling chamber sections 3, 4, in which the filaments are each cooled with process air of different temperature.
  • the temperature of the process air with which the filaments in the first upper cooling chamber section 3 are applied is higher than the temperature of the process air with which the filaments in the second lower cooling chamber section 4 are acted upon.
  • a stretching unit 5 is connected for the aerodynamic stretching of the filaments.
  • the cooling chamber 2 is connected via an intermediate channel 6 with the drawing unit 5.
  • the connection region between the cooling chamber 2 and the stretching unit 5 is formed closed according to the invention. This means that in this transition region and in particular in the region of the intermediate channel 6 no air or substantially no air is introduced from the outside into the flow path of the filaments.
  • the intermediate channel 6 extends from the cooling chamber 2 to the stretching unit 5 converging. In other words, the intermediate channel 6 tapers from the cooling chamber 2 to the stretching unit 5.
  • the drawing unit 5 has a drawing channel 7, the channel walls 8, 9 of which are arranged divergently over at least part of the length of the drawing channel 7.
  • the channel walls 8, 9 thus form at least one diverging section 10, in which the distance of the Canal walls 8, 9 enlarged towards the bottom.
  • These channel walls 8, 9 are the channel walls 8, 9 of the stretching channel 7 which are arranged transversely to the machine direction or transversely to the conveying direction of the spunbonded nonwoven fabric.
  • the conveying direction of the spunbonded nonwoven fabric is in Fig. 1 indicated by a double arrow.
  • a laying unit 11 which preferably and in the exemplary embodiment consists of a first diffuser 12 and a second diffuser 13.
  • an ambient air inlet gap 14 is provided between the first diffuser 12 and the second diffuser 13.
  • Each diffuser 12, 13 has an upper converging part and a lower diverging part. Accordingly, each diffuser 12, 13 has a narrowest point between the upper converging part and the lower diverging part.
  • the diffuser walls in the diverging part of the first diffuser 12 and / or the second diffuser 13 are adjustable, so that the opening angle of the respective diverging part is adjustable.
  • Ablegesiebband 15 is provided as a depositing device for the spunbonded web. Under this Ablegesiebband 15 suitably at least one suction device not shown in the figures is provided with the air in a conventional manner by the Ablegesiebband 15 can be sucked.
  • FIGS. 2 to 5 preferred embodiments for the embodiment of the drawing channel 7 of the drawing unit 5 are shown.
  • additional air is blown into the drafting channel 7 at the beginning of the diverging Verstreckkanalab Songs or at the beginning of the diverging section 10 or just before the diverging section.
  • the introduction of the air takes place expediently in Direction of movement of the filaments or of the filament bundle and preferably tangentially to the filaments or to the filament bundle.
  • the air injection preferably takes place from both opposite channel walls 8, 9 and at the same height of the drawing unit 5.
  • the air is blown in with the proviso that the filament bundle is widened, wherein the opening angle of the filament bundle is preferably 0.1 to 1 °.
  • This expansion of the filament bundle is in the FIGS. 2 to 5 been hinted at. - As far as here and below the beginning of the diverging section 10 is mentioned, this means in relation to the length of the diverging section 10 in particular the first third, preferably the first quarter and very preferably the first fifth of the diverging section 10th
  • Fig. 2 shows a first embodiment of the drawing unit 5 according to the invention, in which the Verstreckkanal 7 over its entire length diverging channel walls 8, 9 has.
  • the entire Verstreckkanal 7 is formed diverging.
  • the air supply takes place here at the beginning of the diverging Verstreckkanals 7.
  • the channel walls 8, 9 are arranged symmetrically with respect to the center plane M.
  • the divergence angle between the channel walls 8, 9 remains constant over the length of the Verstreckkanals 7.
  • the Verstreckkanal 7 initially has a parallel section 16 with parallel channel walls 8, 9, to which then the diverging section 10 connects.
  • the air supply takes place here at the beginning of this diverging section 10.
  • the diverging portion 10 is formed longer than the parallel portion 16 and in about twice as long.
  • the channel walls 8, 9 in the diverging section 10 symmetrical with respect to Middle plane M arranged and the Divergenzwinkel remains constant over the length of the diverging portion 10.
  • Fig. 4 shows an embodiment in which the Verstreckkanal 7 first has a converging portion 17 with converging channel walls 8, 9, then immediately followed by the diverging portion 10.
  • the air supply is also here at the beginning of the diverging section 10.
  • the diverging section 10 is in the embodiment according to Fig. 4 longer than the converging section 17, and about twice as long.
  • Fig. 5 1 shows an embodiment of the drawing unit 5, in which the drawing channel 7 initially has a convergent section 17 with converging channel walls 8, 9, to which a parallel section 16 adjoins.
  • the divergent section 10 then directly adjoins the parallel section 16.
  • the air supply is also here at the beginning of the diverging section 10.
  • the length of the diverging section 10 is greater than the length of the remaining Verstreckkanals 7 of converging section 17 and parallel section 16 in the embodiment.
  • the channel walls 8, 9 are symmetrical with respect the median plane M arranged. The divergence angle remains constant over the length of the diverging section 10.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Nonwoven Fabrics (AREA)
EP07012793.1A 2007-06-29 2007-06-29 Dispositif destiné à la fabrication de matières non tissées Active EP2009163B1 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
DK07012793.1T DK2009163T3 (da) 2007-06-29 2007-06-29 Indretning til fremstilling af filterdug
ES07012793.1T ES2440244T3 (es) 2007-06-29 2007-06-29 Dispositivo para la fabricación de tela no tejida
EP07012793.1A EP2009163B1 (fr) 2007-06-29 2007-06-29 Dispositif destiné à la fabrication de matières non tissées
PL07012793T PL2009163T3 (pl) 2007-06-29 2007-06-29 Urządzenie do wytwarzania włókniny typu spunbond
IL192000A IL192000A (en) 2007-06-29 2008-06-05 Apparatus for making a spunbond web
CA2635329A CA2635329C (fr) 2007-06-29 2008-06-18 Appareillage de realisation d'un voile de nontisse par filage direct
JP2008165256A JP5094588B2 (ja) 2007-06-29 2008-06-25 スパンボンドウエブを形成する装置
US12/146,573 US7762800B2 (en) 2007-06-29 2008-06-26 Apparatus for making a spunbond web
CN2008101317808A CN101333730B (zh) 2007-06-29 2008-06-27 用于制造纺粘纤维网的设备
BRPI0803610-1A BRPI0803610B1 (pt) 2007-06-29 2008-06-30 Apparatus for making an un-tended tissue

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07012793.1A EP2009163B1 (fr) 2007-06-29 2007-06-29 Dispositif destiné à la fabrication de matières non tissées

Publications (2)

Publication Number Publication Date
EP2009163A1 true EP2009163A1 (fr) 2008-12-31
EP2009163B1 EP2009163B1 (fr) 2013-10-02

Family

ID=39551821

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07012793.1A Active EP2009163B1 (fr) 2007-06-29 2007-06-29 Dispositif destiné à la fabrication de matières non tissées

Country Status (10)

Country Link
US (1) US7762800B2 (fr)
EP (1) EP2009163B1 (fr)
JP (1) JP5094588B2 (fr)
CN (1) CN101333730B (fr)
BR (1) BRPI0803610B1 (fr)
CA (1) CA2635329C (fr)
DK (1) DK2009163T3 (fr)
ES (1) ES2440244T3 (fr)
IL (1) IL192000A (fr)
PL (1) PL2009163T3 (fr)

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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
US10301746B2 (en) 2012-10-16 2019-05-28 Avintiv Specialty Materials, Inc. Multi-zone spinneret, apparatus and method for making filaments and nonwoven fabrics therefrom
EP3199671B1 (fr) * 2016-01-27 2020-03-04 Reifenhäuser GmbH & Co. KG Maschinenfabrik Dispositif destine a la fabrication de matieres non tissees
MY194243A (en) * 2016-03-30 2022-11-24 Mitsui Chemicals Inc Apparatus for manufacturing non-woven fabric and method of manufacturing non-woven fabric
DE102016119866A1 (de) * 2016-10-18 2018-04-19 Reifenhäuser GmbH & Co. KG Maschinenfabrik Verfahren und Anlage zur Erzeugung eines Vlieses aus Fasern
ES2754605T3 (es) * 2017-03-31 2020-04-20 Reifenhaeuser Masch Dispositivo para la fabricación de velos de hilatura a partir de filamentos continuos
WO2019104240A1 (fr) 2017-11-22 2019-05-31 Extrusion Group, LLC Ensemble embout de matrice et procédé de fusion-soufflage
CN111172603A (zh) * 2020-02-11 2020-05-19 宏大研究院有限公司 一种适用于纺粘法纺丝的牵伸装置

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EP1340843A1 (fr) * 2002-02-28 2003-09-03 Reifenhäuser GmbH & Co. Maschinenfabrik Appareil pour la fabrication en continu d'un voile de tissé-lié

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US6379136B1 (en) * 1999-06-09 2002-04-30 Gerald C. Najour Apparatus for production of sub-denier spunbond nonwovens
EP1340843A1 (fr) * 2002-02-28 2003-09-03 Reifenhäuser GmbH & Co. Maschinenfabrik Appareil pour la fabrication en continu d'un voile de tissé-lié

Also Published As

Publication number Publication date
US7762800B2 (en) 2010-07-27
BRPI0803610B1 (pt) 2017-06-27
JP2009013559A (ja) 2009-01-22
IL192000A0 (en) 2009-02-11
IL192000A (en) 2012-02-29
EP2009163B1 (fr) 2013-10-02
JP5094588B2 (ja) 2012-12-12
DK2009163T3 (da) 2014-01-13
US20090004313A1 (en) 2009-01-01
CA2635329C (fr) 2012-08-07
ES2440244T3 (es) 2014-01-28
CN101333730B (zh) 2010-11-10
CN101333730A (zh) 2008-12-31
CA2635329A1 (fr) 2008-12-29
PL2009163T3 (pl) 2014-03-31
BRPI0803610A2 (pt) 2009-05-05

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