EP3177459A1 - Bande de tissu servant à fabriquer un matériau de bande, en particulier servant à fabriquer un non-tissé filé-lié - Google Patents

Bande de tissu servant à fabriquer un matériau de bande, en particulier servant à fabriquer un non-tissé filé-lié

Info

Publication number
EP3177459A1
EP3177459A1 EP15745444.8A EP15745444A EP3177459A1 EP 3177459 A1 EP3177459 A1 EP 3177459A1 EP 15745444 A EP15745444 A EP 15745444A EP 3177459 A1 EP3177459 A1 EP 3177459A1
Authority
EP
European Patent Office
Prior art keywords
threads
fabric
deposits
spunbonded
web
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
EP15745444.8A
Other languages
German (de)
English (en)
Other versions
EP3177459B1 (fr
Inventor
Uwe Köckritz
Jürgen ABRAHAM
Antony Morton
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.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
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=53776586&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP3177459(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP3177459A1 publication Critical patent/EP3177459A1/fr
Application granted granted Critical
Publication of EP3177459B1 publication Critical patent/EP3177459B1/fr
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D3/00—Woven fabrics characterised by their shape
    • D03D3/04—Endless fabrics

Definitions

  • the present invention relates to a fabric tape for the production of web material, in particular for the production of spunbonded comprising a plurality of longitudinally extending substantially in a band longitudinal direction and a plurality of substantially transverse in a transverse direction transverse yarns, the longitudinal yarns set at Abbindeddlingen with the transverse threads and Vertex areas of the longitudinal threads are formed on a web material contact side, wherein at the web material contact side a plurality of deposits is provided at least at the longitudinal threads.
  • a fabric tape which can be used, for example, in a dry section of a paper machine.
  • the fabric tape is formed with longitudinal yarns extending in a tape longitudinal direction, which generally corresponds to a machine direction, and extending transverse yarns in a tape transverse direction, which generally corresponds to a cross machine direction.
  • the longitudinal threads bind to transverse threads, ie, intersect these, wherein in the region of these tie points crest areas of the longitudinal threads are formed, in particular also vertex areas are formed on a web material contact side.
  • Deposits are provided in the region of these web material-contact-side apex regions of the longitudinal threads and also the corresponding web-material contact-side apices of the transverse threads, which are each elongated in the direction of the threads on which they are provided. These deposits made of silicone material serve to improve the sheet guide characteristics, but at the same time the air permeability of the tape should not be affected. It is the object of the present invention to provide a fabric tape for the production of web mats, in particular for the production of spunbonded fabric, which has an improved guiding or entrainment characteristic for the web material to be produced with such a fabric tape.
  • a fabric tape for producing sheet material in particular for producing spunbonded nonwoven, comprising a plurality of longitudinal threads extending substantially in a band longitudinal direction and a plurality of transverse threads extending substantially in a cross-belt direction, wherein the longitudinal threads at setting points with the transverse threads and apex areas of the longitudinal threads are formed on a web-fed contact side, wherein a multiplicity of deposits are provided at least on the longitudinal threads on the web-material contact side.
  • new contact or carrying points for the spunbonded fabric are produced.
  • the deposits create an increased driving interaction with the web material to be produced.
  • non-contacting deposits are also provided in particular in areas outside the vertex areas or the vertex areas, or the deposits extending into vertex areas are provided Deposits with respect to the vertex areas designed asymmetrically. As a result of the deposits formed in this way, an enlarged surface of the fabric band for entrainment interaction with the web material to be produced can be achieved.
  • the deposits provided on the fabric tape according to the invention in the sense of the present inventions are formed by material applied specifically to the threads of the fabric tape and not by adhering to the thread surface, for example in the web material production operation materials, in particular impurities.
  • a further reinforcement of the entrainment interaction by increasing the surface provided for the application of web material can be achieved by providing at least two adjacent longitudinal threads touching deposits.
  • the areas in which fabric tape deposits are present in the fabric tape constructed in accordance with the invention are therefore not limited to individual threads but also include cross-thread surface areas.
  • the deposits with an areal density in the range of 5 to 500, preferably about 50 to 200, deposits / cm 2 are provided.
  • at least 80% of the deposits have an extension length in the band longitudinal direction in the range of 250 to 2500, preferably about 1000 to 1500 ⁇ .
  • At least 80% of the deposits may have a maximum projection height over the filaments supporting them in the range of 50 to 500, preferably about 100 to 250 ⁇ .
  • the fabric structure of the fabric tape it may be provided that at least a part of, preferably all, longitudinal threads and / or transverse threads is constructed with polyester (PET) material.
  • a part of the transverse threads may be constructed to prevent electrostatic charging with electrically conductive material.
  • PET polyester
  • so-called two-component yarns are advantageous, which comprise a constructed, for example, with PA material core and a sheath of PA material, which contains so-called carbon nanotubes.
  • the deposits can be designed to obtain an efficient entrainment interaction with silicone material or PU material.
  • web material such as.
  • spunbonded fabric used fabric tapes generally have a total length in the tape longitudinal direction which is greater than its width, ie the extension length in the tape transverse direction is.
  • the longitudinal threads are warp threads and the transverse threads are weft threads.
  • spiral connecting elements or a woven fabric seam or the like are conceivable.
  • the present invention further relates to a process for the production of spunbonded nonwoven fabric with the above-described structure, comprising applying spunbonded filaments to the web contact side of the webbing belt moving in one web travel direction in at least one, preferably a plurality of spunbond webs following one another in the web travel direction. application areas.
  • the increased entrainment interaction provided in the fabric tape according to the invention is particularly advantageous since the generally very thin spunbonded filaments or filaments applied in one or more spunbonded yarn application regions are very light and there is a fundamental danger in the manufacturing process too low driving interaction generally cause existing air turbulence a detachment of the applied to the web material contact side of such a fabric ribbon spunbonded threads.
  • each spunbonded filament application region comprises a multiplicity of spunbonded nonwoven filament extrusion nozzles, which follow one another in the transverse direction of the strip, for dispensing spunbonded filaments onto the web contact side of the fabric strip.
  • spunbonded filaments are formed which are formed on at least one thread surface with PP material, and that the fabric tape is moved at a speed of at least 600 m / min in the tape moving direction and in an upstream one , spunbonded nonwoven filament application region spunbonded filaments having a basis weight of at most, preferably less than, 4 g / m 2 are applied to the web material contact side of the fabric tape.
  • the driving interaction achievable with the fabric tape provided according to the invention makes it possible to work with a comparatively high production speed of 600 m / min or more, while at the same time providing a comparatively small amount of spunbonded yarns, especially in the upstream, first spunbonded yarn application region.
  • This area is particularly critical since the weight per unit area of the spunbonded fabric increases only in subsequent spunbonded filament application areas, ie further downstream in the production process, and thus correspondingly decreases the risk of detachment of the spunbonded fabric produced in this way.
  • the spunbonded filaments applied to the fabric tape or its web contact side in the first spunbond thread application region are entrained in the tape movement direction by the deposits to be provided according to the invention without any substantial risk of detachment.
  • spunbonded filaments are applied, which are formed at least on a thread surface with PE material, and that the fabric tape is moved at a speed of at least 300 m / min in the tape movement direction and in an upstream, first Spunbonded filament application area Spunbonded filaments with a Surface weight of at most, preferably less than, 8 g / m 2 are applied to the web material contact side of the fabric tape.
  • spunbonded fabric which is constructed on its surface with PE material, can be applied by the inventive application of deposits on a fabric tape with a comparatively high speed and relatively low basis weight of the first spunbonded yarn application area
  • Spunbonded filaments or the thus produced layer of spunbonded filaments are worked.
  • Fig. 1 is a plan view of a portion of a tissue tape with
  • Fig. 2 is a simplified longitudinal sectional view of a fabric tape
  • Fig. 3 is a further simplified longitudinal sectional view of a
  • FIG. 1 shows a section of a fabric band, generally designated 10, which can be used in an endless configuration in the production of spunbonded fabric.
  • the fabric tape 10 comprises a multiplicity of longitudinal threads 12 running side by side in a tape longitudinal direction L and a multiplicity of transverse threads 14 running side by side in a tape transverse direction Q. Since the fabric tape 10 is generally provided by a seam region, spiral fasteners or the like as an endless belt, it is advantageous to when the longitudinal threads 12 by warp threads and the Cross threads 14 are provided by weft threads.
  • the fabric belt 10 moves in the direction of the longitudinal yarns 12, ie in the longitudinal direction L, which then also corresponds to the tape movement direction, generally a machine direction, while the transverse direction Q corresponds to a cross-machine direction.
  • Fig. 1 is a section of a generally designated 16 sheet material contact side of the fabric tape 10 is shown.
  • this spunbond contact side 16 the spunbonded filaments dispensed from spunbonded filament extrusion nozzles in individual spunbonded filament application regions are applied in the spunbond production process.
  • advantageously in the tape movement direction ie the longitudinal direction L consecutively several z.
  • a layer of spunbonded filaments also referred to as spunbonded filaments, is applied, so that at the end of this deposition process a spunbonded web is produced with a plurality of layers of spunbonded filaments laid one on top of the other.
  • the spunbonded fabric produced in this way can be lifted off the fabric band 10 and, for example, consolidated by pressing in a calendering process.
  • bonding points 18 are formed in the fabric tape 10, where the longitudinal yarns 12 and the transverse yarns 14 intersect.
  • bonding points 18 are formed in the fabric tape 10 where the longitudinal yarns 12 and the transverse yarns 14 intersect.
  • the two longitudinal threads 12 recognizable in FIG. 2 bind over the transverse threads 14 also shown, that is to say on the sheet material contact side 16 lying at the top in FIG.
  • the longitudinal threads 12 are curved or cranked, so that peak areas 20 arise.
  • such an apex region of the longitudinal yarns 12 in the longitudinal direction L extends over a distance corresponding to the dimension of the transverse yarns 14 in the longitudinal direction L located in these crown regions 20.
  • this extension length of the apex regions 20 essentially corresponds to the diameter D of the transverse threads 14.
  • deposits 22 are provided at the web contact side 16 of the fabric tape 10 .
  • the deposits 22 will have an elongated contour substantially in this direction of manufacture, that is, the longitudinal direction L.
  • the deposits 22 are not only present in the fabric band 10 in apex regions 20, but are provided in particular on the longitudinal yarns 12 between vertex regions 22 in such a way that at least a portion of the deposits 22 provided between crest regions 20 does not extend into vertex regions. as in Fig. 2, for example, in the deposition 22 ! the case is.
  • the deposit 22 2 does not extend into a vertex area 20. It can be seen that this deposit 22 2 is in contact with two longitudinal threads 12.
  • the deposit 22 3 recognizable in FIG.
  • the vertex Z is the length center of each vertex portion 20 in the longitudinal direction L.
  • the or part of the deposits 22 have the structure which can be recognized in FIG. 2 on the basis of the deposit 22 3 , in which there is a strong asymmetry with respect to the vertex center Z. At least 70%, preferably at least 80%, of the volume of this deposit 22 3 lies on one side in the web longitudinal direction with respect to the apex center Z. This shaping with the nonselective protrusion or end regions 24 of such deposits 22 3 formed by the strong asymmetry can be achieved by the preceding deposition process be achieved with the production direction in the longitudinal direction L.
  • the deposits 22 are provided in the fabric band 10 preferably distributed over the entire web material contact side 16 with an areal density in the range of 5 to 500, preferably about 50 to 200, deposits / cm 2 .
  • the deposits can be provided with a contour elongated in the band longitudinal direction L by the deposition process, advantageously at least 80% of these deposits 22 in the band longitudinal direction have an extension length in the range of 250 to 2500, preferably about 1000 to 1500, ⁇ ,
  • at least 80% of the deposits 22 have a maximum projection height H over the filaments supporting them, here for example longitudinal filaments 12, in the range from 50 to 500, preferably about 100 to 250 ⁇ have.
  • the total surface, which interacts with the entrainment Spunbonded threads can occur enlarged.
  • the surface roughness of the fabric strip 10 is increased at the web contact side 16, so that, for example, starting from a roughness Ra from 250 to 300 ⁇ after coating or deposition of the deposits roughness Ra may be about 290 to 350 ⁇ ,
  • the possibility is created to work in the spunbond production process with comparatively high speed of the fabric tape 10 in the tape movement direction, generally the tape longitudinal direction L, but also comparatively thin layers of spunbonded filaments applied in the various spunbonded yarn application areas, so as to be able to produce a spunbonded fabric with a comparatively filigree structure.
  • a spunbonded fabric is produced whose spunbonded filaments are constructed on their thread surface with PP material
  • inventively provided with deposits fabric tape at a speed of at least 600 m / min, wherein in an upstream, first spunbond filament application area spunbonded filaments with a total basis weight of less than 4 g / m 2 can be applied to the web material contact side 16 of the fabric belt 10.
  • further downstream spunbonded yarn application areas then further layers of spunbonded filaments, for example, be applied with a comparable low basis weight, so that a total of a spunbonded fabric with a small thickness and very fine structure can be produced.
  • spunbonded nonwovens having a larger basis weight, in particular also a larger basis weight, of the spunbonded nonwoven layers to be applied in individual spunbonded yarn application areas.
  • a spunbonded nonwoven web is to be produced whose spunbonded fibers are constructed with PE material at least on its thread surface, which has a lower static friction coefficient with respect to the threads of the fabric strip 10 which are generally constructed of polymer material
  • the fabric strip 10 described above can nevertheless be manufactured with a comparatively high production rate of At least 300 m / min are worked, at the same time in particular in the upstream, first spunbond strand application area spunbonded filaments with a basis weight of less than 8 g / m 2 can be applied without the risk of lifting or detachment of this first layer of spunbonded filaments, due to the turbulence arising in the manufacturing process, exists.
  • spunbonded filaments which are constructed on their thread surface with PP material, generally in their entire volume range of PP material
  • spunbonded filaments which are constructed at their thread surface with PE material, either completely, ie in the entire volume range, made of PE -Material consist, or may be formed as so-called sheath-core filaments or filaments, which may include, for example, a core of PP material and a sheath surrounding this PE material.
  • Such threads or filaments are also referred to as two-component threads.
  • the longitudinal threads or at least a portion of the longitudinal threads may, for. B. are provided as PET monofilaments, ie threads which are constructed over their entire cross section with the same material.
  • Part of the transverse threads can be constructed to avoid electrostatic charges with electrically conductive material.
  • a sheath-core structure may be provided in which a core of PA material is surrounded by a sheath of so-called carbon nanotubes containing PA material.
  • transverse threads which are electrically conductive, in order to avoid the formation of electrostatic charges in the generally dry-running spunbonding production process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

L'invention concerne une bande de tissu servant à fabriquer un matériau de bande, en particulier servant à fabriquer un non-tissé filé-lié. La bande de tissu comprend une multitude de fils longitudinaux (12) s'étendant sensiblement dans une direction longitudinale de bande (L) et une multitude de fils transversaux (14) s'étendant sensiblement dans une direction transversale de bande (Q). Les fils longitudinaux (12) se lient aux fils transversaux (14) en des points de liaison (18), et des zones de sommet (20) des fils longitudinaux (12) sont formées sur un côté de contact de matériau de bande (16). Une pluralité de dépôts (22) au moins au niveau des fils longitudinaux (12) est prévue au niveau du côté de contact du matériau de bande (16). Selon l'invention, des dépôts (22) ne s'étendant pas dans des zones de sommet (20) sont prévus, et/ou des dépôts (223) s'étendant dans des zones de sommet (20) ne sont pas symétriques par rapport à une zone de sommet (20) respective dans la direction longitudinale de bande (L).
EP15745444.8A 2014-08-07 2015-07-29 Procédé à fabriquer un non-tissé filé-lié Revoked EP3177459B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014215656 2014-08-07
PCT/EP2015/067349 WO2016020230A1 (fr) 2014-08-07 2015-07-29 Bande de tissu servant à fabriquer un matériau de bande, en particulier servant à fabriquer un non-tissé filé-lié

Publications (2)

Publication Number Publication Date
EP3177459A1 true EP3177459A1 (fr) 2017-06-14
EP3177459B1 EP3177459B1 (fr) 2019-08-21

Family

ID=53776586

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15745444.8A Revoked EP3177459B1 (fr) 2014-08-07 2015-07-29 Procédé à fabriquer un non-tissé filé-lié

Country Status (4)

Country Link
US (1) US10435828B2 (fr)
EP (1) EP3177459B1 (fr)
ES (1) ES2749054T3 (fr)
WO (1) WO2016020230A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7561644B2 (ja) * 2020-10-23 2024-10-04 日本フイルコン株式会社 不織布用織物および搬送ベルト
WO2022085336A1 (fr) * 2020-10-23 2022-04-28 日本フイルコン株式会社 Textile pour étoffe non tissée, et bande transporteuse

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1058616A (en) 1964-01-31 1967-02-15 Henry Johnson Fourdrinier wires for paper-making machines
DE3701531A1 (de) 1987-01-21 1988-08-04 Reifenhaeuser Masch Verfahren und anlage zur herstellung von einem spinnvlies
US4981745A (en) 1989-05-26 1991-01-01 Lefkowitz Leonard R Forming fabric for papermaking
DE4332345C2 (de) 1993-09-23 1995-09-14 Reifenhaeuser Masch Verfahren und Vliesblasanlage zur Herstellung von einem Spinnvlies mit hoher Filamentgeschwindigkeit
US7172982B2 (en) 2002-12-30 2007-02-06 Albany International Corp. Dryer and/or industrial fabric with silicone-coated surface
US7919173B2 (en) 2002-12-31 2011-04-05 Albany International Corp. Method for controlling a functional property of an industrial fabric and industrial fabric
US7005044B2 (en) 2002-12-31 2006-02-28 Albany International Corp. Method of fabricating a belt and a belt used to make bulk tissue and towel, and nonwoven articles and fabrics
WO2005013873A1 (fr) 2003-08-08 2005-02-17 Bki Holding Corporation Toile de formation pour procede de fabrication par voie aeraulique et produits ainsi fabriques
US20060046593A1 (en) 2004-08-27 2006-03-02 Jean Senellart Antistatic transfer belt for nonwovens process
US8058188B2 (en) 2005-04-13 2011-11-15 Albany International Corp Thermally sprayed protective coating for industrial and engineered fabrics
ES2363229T3 (es) 2005-07-14 2011-07-27 W.L.GORE & ASSOCIATES GMBH Unidad de refrigeración mediante ventilador para refrigerar componentes electrónicos.
DE102005035030A1 (de) 2005-07-27 2007-02-01 Bhs Corrugated Maschinen- Und Anlagenbau Gmbh Maschine zur Herstellung einer mindestens einseitig kaschierten Wellpappebahn
DE102006044495A1 (de) 2006-09-21 2008-04-17 Fiberweb Corovin Gmbh Leichtgewichtiges Spinnvlies mit besonderen Sperreigenschaften
DE102006044496A1 (de) 2006-09-21 2008-04-17 Fiberweb Corovin Gmbh Leichtgewichtiges Spinnvlies mit besonderen mechanischen Eigenschaften
DE102009000639A1 (de) 2009-02-05 2010-08-12 Voith Patent Gmbh Verfahren zum Beschichten eines Bandes, insbesondere einer Papiermaschinenbespannung
CA2801943C (fr) 2010-09-28 2015-08-11 Huyck Licensco Inc. Etoffe pour processus de formation d'une bande non tissee et procede pour son utilisation

Also Published As

Publication number Publication date
US20170260664A1 (en) 2017-09-14
EP3177459B1 (fr) 2019-08-21
WO2016020230A1 (fr) 2016-02-11
US10435828B2 (en) 2019-10-08
ES2749054T3 (es) 2020-03-18

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