EP3536841B1 - Installation et procédé de production d'un velours textile - Google Patents

Installation et procédé de production d'un velours textile Download PDF

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Publication number
EP3536841B1
EP3536841B1 EP19159677.4A EP19159677A EP3536841B1 EP 3536841 B1 EP3536841 B1 EP 3536841B1 EP 19159677 A EP19159677 A EP 19159677A EP 3536841 B1 EP3536841 B1 EP 3536841B1
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EP
European Patent Office
Prior art keywords
woven
water
brush
suction
disposed
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.)
Active
Application number
EP19159677.4A
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German (de)
English (en)
Other versions
EP3536841A1 (fr
Inventor
Lofti Ghorbel
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.)
Truetzschler GmbH and Co KG
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Truetzschler GmbH and Co KG
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Publication of EP3536841A1 publication Critical patent/EP3536841A1/fr
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    • 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
    • D04H18/00—Needling machines
    • D04H18/04—Needling machines with water jets
    • 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
    • D04H11/00—Non-woven pile fabrics
    • D04H11/08—Non-woven pile fabrics formed by creation of a pile on at least one surface of a non-woven fabric without addition of pile-forming material, e.g. by needling, by differential shrinking

Definitions

  • the present invention relates to a system and a method for producing a velor, in which a fleece is transferred from a first to a second conveyor belt, a device being arranged between the conveyor belts, which device is designed to separate fibers or pile loops from one side of the fleece to push out.
  • a textile velor is usually produced by pushing individual fibers out of the composite using needles.
  • loops are pressed out of the composite using needles and these are cut open.
  • the EP 0183952 B1 describes a process for producing a structured velor needle felt web, in which the needles are immersed in an endlessly rotating brush plate and thereby push the fibers out of the composite.
  • the disadvantage is that the fibers or filaments are more or less severely damaged by the mechanical stress on the needles.
  • the sharp edges and tips of the needles also create thin spots and damage on the neighboring fibers that are not ejected from the composite.
  • Another disadvantage is that the fleece has a certain Basic strength and thus a predetermined basis weight is required so that it is not damaged during this type of processing.
  • the nonwoven needs nonwoven properties, such as a minimum tensile strength and abrasion resistance, so that it is suitable for further processing.
  • a very thin velor with a minimal weight per unit area can only be produced with great effort using this method. Due to the discontinuous operation of the needle machine, continuous production at high working speeds is not possible.
  • the invention includes the technical teaching that a fleece is transferred from a first to a second conveyor belt, a device being arranged between the conveyor belts, which device is designed to press individual fibers or pile loops out of one side of the fleece.
  • the device in the region of a first surface of the nonwoven comprises at least one water bar for generating a plurality of water jets, and at least one support surface for the second surface of the nonwoven, at least part of the support surface being designed as a brush, and one Suction device cooperates with the at least one brush.
  • the use of water jet needling is a cheaper option than the known needle machine, despite the suction and provision of the water.
  • the installation space is so complex and expensive that it is not possible to retrofit an existing system.
  • the water jet needling or consolidation enables reliable and high-quality production of a velor even with low basis weights of the fleece.
  • the fibers are not mechanically damaged by the water jets and by varying the water pressure and replacing the nozzle plates, velours of different quality can be produced very quickly, which is much more complex due to the replacement of a needle bed according to the prior art.
  • the use of water jets enables a continuous flow of production.
  • the support surface under the fleece to be processed is designed as a rotating brush roller which, on the one hand, rotates at the operating speed of the installation, and at the same time is designed to suck off the water jets. This process can be used to produce velor with a low weight.
  • hydrodynamic pre-consolidation which can be carried out at a pressure of 20 to 100 bar, can achieve higher process reliability and higher working speed.
  • FIG 1 shows a system 1 for the production of a velor 2b, in which an unconsolidated nonwoven 2a is produced from a preprocessing, for example by a carding machine or a spunbonding process.
  • the fleece 2a can thus consist of staple fibers with natural and / or synthetic fibers, of a wet nonwoven or a combination of the fibers listed above.
  • the fleece 2a is guided by a conveyor belt 7 under a water bar 4 and transferred to another conveyor belt 8. Between the conveyor belts 7, 8, a suction device 3 is arranged under the water bar 4, on which the fleece 2a rests.
  • the water bar 4 has a plurality of nozzles 5, from which water jets 6 strike the fleece 2a.
  • the water jets 6 hit the fleece 2a with a pressure of 40 to 200 bar and compress the fleece 2a.
  • the water jets push 6 individual fibers or pile loops out of the underside of the fleece partially 2a so that a velor 2b is produced.
  • the suction device 3 has a suction slot 3b which allows the water jets 6 to pass into a suction chamber 3. This can be suctioned and drains the water from the water bar 4.
  • On both sides of the suction slit 3b are arranged brushes 3c on which the fleece 2a lies between the conveyor belts 7, 8. The brushes 3c form the contact surface for the fleece 2a for the area of water jet processing and enable individual fibers or pile loops to emerge from the compressed fleece 2a.
  • a vertical fiber or pile layer is produced, which emerges from the underside of the fleece 2a, that is to say the side opposite the water jets 6.
  • a plate can also be provided with brushes 3c, wherein suction bores can be arranged between the individual bundles of brushes 3c.
  • the brushes 3c can consist of a hard plastic or metal wires.
  • the velor 2b is fed to a further processing via the conveyor belt 8.
  • the working width of the system 1 can be between 0.1 m and 3.8 m, the water bar 4 and the suction 3 extending over the entire working width.
  • At least one further water bar 20 with a suction device 23 can be arranged in the working direction in the area in front of the water bar 4 with which the velor is produced.
  • This water bar 20 is operated at a lower pressure of, for example, 20 to 100 bar, and can be operated in particular in the case of light nonwovens or a high working speed.
  • the nozzle row 21 can have a higher nozzle density than the nozzle row 5 to form a velor.
  • the nozzle diameter can also have a smaller diameter, so that pre-consolidation is carried out with finer water jets 22 than with the water bar 4.
  • pre-moistening or pre-consolidation of the unconsolidated fleece 2a can take place, so that greater process reliability and / or a higher operating speed of the system is achieved, especially with nonwovens with low basis weights.
  • each brush roller 10 can have a suction chamber 10a and a plurality of suction slots 10b distributed over the circumference. Brushes 10c are arranged between the suction slots 10b and can be exchangeably fastened in the form of slide-in strips in or on the brush roller 10.
  • each brush roller 10 has six suction slots 10b with brushes 10c arranged between them.
  • the brush rollers 10 are preferably driven and have the same peripheral speed on the outer diameter of the brushes 10c as the working speed of the fleece.
  • the velor 2b produced is not pulled over fixed brushes, as a result of which the quality can suffer, particularly in the case of the low basis weights, but is continuously moved almost without friction to the conveyor belt 8 by the rotating brush rollers 10.
  • the brushes can also be arranged in bundles on the brush roller 10, with a plurality of bores (not shown) being arranged between the brushes, through which the water of the water bar is suctioned off.
  • the water bars 4 are operated at a pressure of 40 to 200 bar.
  • a circumferential perforated conveyor belt with a brush covering can also be used, in which case suction must be set up below the support surface for the fleece of the conveyor belt.
  • This exemplary embodiment also optionally has, as a switchable unit, at least one further water bar 20 with a suction 23 in the working direction in the area in front of the water bar 4 with which the velor is produced.
  • This water bar 20 is operated at a lower pressure of, for example, 20 to 100 bar, and can be operated in particular in the case of light nonwovens or a high working speed.
  • the nozzle row 21 can have a higher nozzle density than the nozzle row 5 to form a velor.
  • the nozzle diameters can also have a smaller diameter, so that pre-consolidation is carried out with finer water jets 22 than with the water bar 4.
  • the at least one water bar 20 can be used for pre-moistening or pre-consolidation of the unconsolidated fleece 2a, so that greater process reliability and / or a higher operating speed of the system is achieved, especially with nonwovens with low basis weights.
  • the fleece is acted upon by the water jets 6 from below, since the fleece is guided below a rotating brush roller 10.
  • This brush roller also has an unspecified suction chamber and suction slots or suction bores through which at least part of the water can be removed from the water bar 4.
  • the then created layer of a velor 2b no longer lies on the conveyor belt 8 with the pile fibers.
  • This exemplary embodiment can also provide a pre-moistening or pre-consolidation with at least one further water bar 20 with accessories, which is operated at a lower pressure than the water bar 4.
  • Figures 1 to 3 nonwovens with a basis weight of 50 g / m 2 to 500 g / m 2 can be processed.
  • the working speed can be up to 300m / min.
  • the fibers of the nonwoven preferably have a length of at least 20 mm.
  • the length of the individual brushes protruding above the brush roller 10 or the suction device 3 can be up to 15 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (13)

  1. Installation pour la fabrication d'un velours, dans laquelle un non-tissé (2a) est transféré une première à une deuxième courroie de transport (7, 8), dans laquelle un dispositif est agencé entre les courroies de transport (7, 8), lequel est aménagé à pousser des fibres individuels ou des boucles en dehors d'un côté du non-tissé (2a), caractérisée en ce que, dans la région d'une première surface du non-tissé (2a), le dispositif comporte au moins une rampe d'eau (4) pour générer une pluralité de jets d'eau (6), de même qu'au moins une surface d'appui pour la deuxième surface du non-tissé (2a), dans laquelle au moins une partie de la surface d'appui est aménagée comme une brosse (3c, 10c), laquelle coopère avec au moins un dispositif d'aspiration.
  2. Installation selon la revendication 1, caractérisée en ce que le dispositif d'aspiration comprend une fente d'aspiration (3b, 10b) ou des perçages, par l'intermédiaire de laquelle, respectivement desquels l'eau des jets d'eau (6) est guidée vers une chambre d'aspiration (3a, 10a).
  3. Installation selon la revendication 2, caractérisée en ce que des brosses (3c, 10c) sont agencées des deux côtés de la fente d'aspiration (3b, 10b) ou autours des perçages.
  4. Installation selon l'une des revendications précédentes, caractérisée en ce que les brosses (3c) sont agencées de façon stationnaire.
  5. Installation selon l'une des revendications 1 à 3, caractérisée en ce que les brosses (10c) sont déplaçables à la vitesse de travail de l'installation (1).
  6. Installation selon la revendication 5, caractérisée en ce que les brosses (10c) sont agencées sur un rouleau à brosses (10) rotatif, dont la vitesse circonférentielle correspond à la vitesse de travail de l'installation (1).
  7. Installation selon l'une des revendications 1 à 6, caractérisée en ce que le non-tissé est humidifié ou pré-consolidé au moyen des jets d'eau.
  8. Installation selon l'une des revendications précédentes, caractérisée en ce que ladite au moins une rampe d'eau (4) est opérée à une pression de 40 à 200 bars, et en ce que ladite au moins une rampe d'eau (20) est opérée à une pression de 20 à 100 bars pour l'humidification ou la pré-consolidation.
  9. Installation selon l'une des revendications précédentes, caractérisée en ce que l'installation est aménagée à être opérée à une vitesse de travail jusqu'à concurrence de 300 m/min.
  10. Méthode pour la fabrication d'un velours, dans laquelle un non-tissé (2a) non-consolidé est transféré d'une première à une deuxième courroie de transport (7, 8), dans laquelle entre les courroies de transport (7, 8) un dispositif est agencé, lequel est aménagé à pousser des fibres individuels ou des boucles en dehors d'une surface du non-tissé (2a), caractérisée en ce qu'une multitude de jets d'eau percutent sur la première surface du non-tissé (2a) et poussent des fibres individuels ou boucles en dehors de la deuxième surface, dans laquelle la deuxième surface du non-tissé (2a) repose sur une surface d'appui, laquelle au moins partiellement est aménagée comme au moins une brosse (3c, 10c), et l'eau des jets d'eau est aspirable par au moins un dispositif d'aspiration, lequel coopère avec ladite au moins une brosse (3c).
  11. Méthode selon la revendication 10, caractérisée en ce que ladite au moins une brosse (3c) est agencée de façon stationnaire entre les courroies de transport (7, 8).
  12. Méthode selon la revendication 10, caractérisée en ce que ladite au moins une brosse (3c) est agencée sur un rouleau à brosses rotatif (10).
  13. Méthode selon la revendication 10, caractérisée en ce que le non-tissé est humidifié ou pré-consolidé en amont du dispositif pour réaliser un velours.
EP19159677.4A 2018-03-05 2019-02-27 Installation et procédé de production d'un velours textile Active EP3536841B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018104907.2A DE102018104907A1 (de) 2018-03-05 2018-03-05 Anlage und Verfahren zur Erzeugung eines textilen Velours

Publications (2)

Publication Number Publication Date
EP3536841A1 EP3536841A1 (fr) 2019-09-11
EP3536841B1 true EP3536841B1 (fr) 2020-07-08

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Application Number Title Priority Date Filing Date
EP19159677.4A Active EP3536841B1 (fr) 2018-03-05 2019-02-27 Installation et procédé de production d'un velours textile

Country Status (4)

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EP (1) EP3536841B1 (fr)
CN (1) CN110230151B (fr)
DE (1) DE102018104907A1 (fr)
ES (1) ES2813279T3 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3451109A (en) * 1968-11-18 1969-06-24 Union Carbide Corp Method of making non-woven fibrous web
DE3444763A1 (de) * 1984-12-07 1986-06-12 Oskar Dilo Maschinenfabrik Kg, 6930 Eberbach Anlage zum herstellen strukturierter textiler velournadelfilzbahnen
DE4022891A1 (de) * 1989-08-03 1991-02-07 Dilo Kg Maschf Oskar Verfahren zum herstellen genadelter, strukturierter und gemusterter textiler velourbahnen
DE102008026968A1 (de) * 2008-06-05 2009-12-24 Entwicklungsgesellschaft für Akustik (EfA) mit beschränkter Haftung Velours-Teppich mit Tufting-ähnlicher Oberfläche
EP2302120B1 (fr) * 2009-09-22 2012-06-20 Groz-Beckert KG Injecteur pour une machine de traitement du textile
CN201915223U (zh) * 2010-12-20 2011-08-03 东纶科技实业有限公司 一种条绒水刺非织造布
WO2012176825A1 (fr) * 2011-06-23 2012-12-27 花王株式会社 Feuille composite et son procédé de fabrication

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE102018104907A1 (de) 2019-09-05
ES2813279T3 (es) 2021-03-23
EP3536841A1 (fr) 2019-09-11
CN110230151A (zh) 2019-09-13
CN110230151B (zh) 2022-04-05

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