EP3942102B1 - Method for enhancing flat textile materials via finishing - Google Patents

Method for enhancing flat textile materials via finishing Download PDF

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Publication number
EP3942102B1
EP3942102B1 EP20704222.7A EP20704222A EP3942102B1 EP 3942102 B1 EP3942102 B1 EP 3942102B1 EP 20704222 A EP20704222 A EP 20704222A EP 3942102 B1 EP3942102 B1 EP 3942102B1
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EP
European Patent Office
Prior art keywords
fabric web
finishing
print heads
cleaning
substances
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
EP20704222.7A
Other languages
German (de)
French (fr)
Other versions
EP3942102C0 (en
EP3942102A1 (en
Inventor
Gunnar Suchy
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.)
Suchy Textilmaschinenbau GmbH
Original Assignee
Suchy Textilmaschinenbau GmbH
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Publication of EP3942102A1 publication Critical patent/EP3942102A1/en
Application granted granted Critical
Publication of EP3942102C0 publication Critical patent/EP3942102C0/en
Publication of EP3942102B1 publication Critical patent/EP3942102B1/en
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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
    • D06M23/08—Processes in which the treating agent is applied in powder or granular form
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
    • D06B1/02—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by spraying or projecting
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
    • D06B23/30—Means for cleaning apparatus or machines, or parts thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B5/00—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating
    • D06B5/02—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating through moving materials of indefinite length
    • D06B5/08—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating through moving materials of indefinite length through fabrics
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/02—After-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16517—Cleaning of print head nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4078—Printing on textile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041—Digital printing on surfaces other than ordinary paper
    • B41M5/0047—Digital printing on surfaces other than ordinary paper by ink-jet printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041—Digital printing on surfaces other than ordinary paper
    • B41M5/0064—Digital printing on surfaces other than ordinary paper on plastics, horn, rubber, or other organic polymers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B11/00—Treatment of selected parts of textile materials, e.g. partial dyeing
    • D06B11/0056—Treatment of selected parts of textile materials, e.g. partial dyeing of fabrics
    • D06B11/0059—Treatment of selected parts of textile materials, e.g. partial dyeing of fabrics by spraying

Definitions

  • the invention relates to a method for finishing sheet-like textile materials by equipping them with liquid substances or substance mixtures, whereby the substances or substance mixtures can contain particles of the same or different sizes, by means of controlled, targeted application using printing technologies according to claim 1.
  • the state of the art in the finishing of textile materials includes the impregnation, or application of chemicals to a textile.
  • a so-called padder is used for the purpose of a full-bath application or a so-called splashing process, i.e. a one-sided application.
  • the DE 25 35 593 A1 shows how areas with different degrees of reinforcement can be obtained on a surface structure by applying a cross-linkable substance to the area to be stiffened by means of pressure.
  • the EN 100 20 102 A1 shows a solution that makes it possible to apply highly viscous liquids to a carrier material, such as a fabric, via a pressure nozzle.
  • the EP 2 643 159 B1 discloses a digital printing and finishing process for fabrics, which generally refers to a digital printing step, which is also carried out several times. A plurality of bars are mentioned across the conveyor belt, which are provided with the printing heads, which are electronically controlled and synchronized with the movement of the conveyor belt for the textile material.
  • the EP 1 885 931 B1 relates to a method for providing a localized finish on a textile product.
  • the process theory there focuses on a locally limited surface treatment.
  • an arrangement of digitally controlled nozzles is to be used.
  • a surface treatment composition is fed to the nozzles in order to carry out a selective application of the composition via the nozzles.
  • the nozzles are designed in such a way that different surface treatment compositions can be applied to the substrate in different patterns.
  • compositions may include antistatic, antimicrobial, medicinal agents, anti-wrinkle agents, flame retardant agents or the like.
  • the EP 1 866 385 B1 refers to a composition for continuous inkjet finishing of a textile product.
  • This composition is based on a dispersion or emulsion of a functional finishing agent in a carrier using a conductive salt.
  • the composition for the purpose of finishing a textile product is applied by means of through-flow inkjet nozzles.
  • a coating pixel should cover four mesh openings and have a diameter of more than 100 ⁇ m.
  • the finishing of a textile article is to be carried out using a nozzle arrangement for applying substances to the textile.
  • the nozzles used are so-called multi-deflecting inkjet nozzles.
  • Deposition is carried out using inkjet technology on a textile substrate, with water being used as a carrier medium.
  • US 4580304 A discloses a method for finishing sheet-like textile materials by applying liquid dyes, by means of controlled, targeted application of the liquid dyes using printing technologies in the form of several spaced-apart printing bars with a plurality of printing heads, wherein the liquid dyes are applied with several printing heads, and furthermore the sheet-like textile materials present as a web are guided freely over rollers.
  • the object of the invention to provide a further developed method for finishing sheet-like textile materials by finishing with liquid substances or mixtures of substances, whereby the substances or mixtures of substances can contain particles of the same or different sizes, by means of controlled, targeted application using printing technologies.
  • the aim of the invention is to process larger quantities of material with higher viscosities and, if necessary, materials with particles of larger diameter.
  • rapid switching and Optimal adaptation of the printing equipment used in terms of production technology is a sub-task that needs to be solved.
  • a key idea of the invention in this regard is that the web of material to be treated is allowed to run freely over a table or rollers without the belt being fixed. This creates particularly good options for suction or squeezing after application with the aim of optimised penetration into the textile, but also for any necessary rinsing or cleaning as well as simple maintenance by accessing the nozzles from the underside without an annoying conveyor belt.
  • a product change is possible more quickly because the pressure system can be flushed and then filled with new substances according to the teaching of the invention.
  • the substances or mixtures of substances contain particles of the same or different sizes.
  • Finishing by finishing is carried out by means of controlled, targeted application of an appropriate fleet using printing technologies in the form of individual print heads or one or more print bars with a large number of print heads.
  • a recipe-based mixture of a compound is created and then applied, or the individual substances are applied wet-on-wet using multiple print heads to form a mixed finish layer.
  • the flat textile materials present as a web are guided freely, in particular freely over rollers or a table.
  • a cleaning tray for rinsing the print head and/or a suction device for optimizing the penetration of the finishing into the web of material.
  • a cleaning tray is located above the web of material, in the direction of web transport in front of or behind the print head arrangement.
  • the cleaning tray can be moved relative to the print heads, so that the print heads can be cleaned or rinsed without removing the web, for example to apply different finishes without disrupting the production process by removing or installing the web.
  • a squeezing device can be provided, followed by a large-area drying device so that the treated web is dried and transferred to a winder.
  • the print heads are preferably implemented as individual print heads with a linear arrangement of several print nozzles.
  • the print heads are arranged in a row next to each other and can be oriented at an angle to the web, so that the respective equipment can be applied evenly.
  • the angle of inclination to the web is preferably 45°.
  • the suction device can be designed as a suction roller with a suction slot and the web rests on the suction roller at least in the area of the suction gap or touches it or is guided at a small surface distance above the suction slot of the suction roller.
  • the web can be squeezed off if both sides have been coated. If one side has been coated, the squeezing off is not necessary.
  • the cleaning tray is removable to provide access to the print heads for cleaning.
  • the cleaning tub can not only hold cleaning and rinsing liquids, but also collect dripping liquid at the same time.
  • the table is designed as a perforated plate or sheet with a large number of openings.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)

Description

Die Erfindung betrifft ein Verfahren zur Veredelung von flächenförmigen textilen Materialien durch Ausrüsten mit flüssigen Substanzen oder Substanzgemischen, wobei die Substanzen oder Substanzgemische Partikel in gleicher oder unterschiedlicher Größe enthalten können, mittels gesteuertem, gezieltem Auftragen unter Anwendung von Drucktechnologien gemäß Anspruch 1.The invention relates to a method for finishing sheet-like textile materials by equipping them with liquid substances or substance mixtures, whereby the substances or substance mixtures can contain particles of the same or different sizes, by means of controlled, targeted application using printing technologies according to claim 1.

Zum Stand der Technik bei der Ausrüstung textiler Materialien gehört die Tränkung, respektive der Auftrag von Chemikalien auf ein Textil. Hier kommt ein sogenannter Foulard zum Zwecke eines vollbadigen Auftrages oder ein sogenanntes Pflatschverfahren, das heißt ein einseitiger Auftrag, zur Anwendung.The state of the art in the finishing of textile materials includes the impregnation, or application of chemicals to a textile. A so-called padder is used for the purpose of a full-bath application or a so-called splashing process, i.e. a one-sided application.

Mit dem vorgenannten Verfahren ist ein definierter, mengenmäßiger Auftrag nicht oder nur sehr ungenau möglich. Darüber hinaus wird der im Foulard befindliche Flottenansatz durch textilen Abrieb verunreinigt und kann bei Produktionsende nicht zurückgeführt werden, so dass Entsorgungsprobleme resultieren.With the above-mentioned process, a defined, quantitative application is not possible or only possible with great inaccuracy. In addition, the liquor mixture in the padder is contaminated by textile abrasion and cannot be returned at the end of production, resulting in disposal problems.

In der Vergangenheit wurden deshalb Überlegungen angestellt, inwieweit textile Flächengebilde gezielt mit chemischen Substanzen versehen werden können, indem auf Druckverfahren zurückgegriffen wird.In the past, considerations have therefore been given to the extent to which textile fabrics can be specifically provided with chemical substances by using printing processes.

Die DE 25 35 593 A1 zeigt, wie auf einem Flächengebilde Bereiche mit unterschiedlichem Verstärkungsgrad erhalten werden können, indem auf die zu versteifende Stelle eine vernetzbare Substanz mittels Druck aufgebracht wird.The DE 25 35 593 A1 shows how areas with different degrees of reinforcement can be obtained on a surface structure by applying a cross-linkable substance to the area to be stiffened by means of pressure.

Bei der DE 26 53 162 C3 geht es um ein Bemustern von Textilgut. Dort ist offenbart, neben Farbstoffen auch andere Behandlungsmittel über Drucker auf das Textilgut aufzubringen.At the DE 26 53 162 C3 is about sampling textile goods. It is disclosed that, in addition to dyes, other treatment agents can also be applied to the textile goods using printers.

Die DE 100 20 102 A1 zeigt eine Lösung, mit deren Hilfe über eine Druckdüse die Möglichkeit besteht, hochviskose Flüssigkeiten auf ein Trägermaterial, zum Beispiel ein Gewebe, aufzubringen.The EN 100 20 102 A1 shows a solution that makes it possible to apply highly viscous liquids to a carrier material, such as a fabric, via a pressure nozzle.

Hintergrund war dort die Idee, selbstklebende Bänder mit Klebstoffen auszurüsten. Diesbezüglich ist auch die EP 0 356 777 B1 ein relevanter Stand der Technik.The background was the idea of equipping self-adhesive tapes with adhesives. In this respect, the EP 0 356 777 B1 a relevant state of the art.

Im Zusammenhang mit dem Ausstoß hochviskoser Materialien unter Anwendung der Drucktechnologie sei auf die DE 10 2016 210 359 A1 aufmerksam gemacht.In connection with the ejection of highly viscous materials using printing technology, attention should be paid to the EN 10 2016 210 359 A1 made aware of.

Die EP 2 643 159 B1 offenbart ein digitales Druck- und Endbearbeitungsverfahren für Stoffe, welches allgemein auf einen Digitaldruckschritt, der auch mehrfach ausgeführt wird, verweist. Quer zum Förderband ist eine Mehrzahl von Stäben erwähnt, welche mit den Druckköpfen versehen sind, die elektronisch gesteuert und mit der Bewegung des Förderbandes für das textile Material synchronisiert werden.The EP 2 643 159 B1 discloses a digital printing and finishing process for fabrics, which generally refers to a digital printing step, which is also carried out several times. A plurality of bars are mentioned across the conveyor belt, which are provided with the printing heads, which are electronically controlled and synchronized with the movement of the conveyor belt for the textile material.

Die EP 1 885 931 B1 betrifft ein Verfahren zur Bereitstellung einer lokalisierten Ausrüstung auf einem textilen Erzeugnis. Bei der dortigen Verfahrenslehre steht eine lokal begrenzte Oberflächenbehandlung im Vordergrund. Diesbezüglich soll eine Anordnung digital gesteuerter Düsen zum Einsatz kommen. Den Düsen wird eine Oberflächenbehandlungs-Zusammensetzung zugeführt, um ein selektives Auftragen der Zusammensetzung über die Düsen durchzuführen.The EP 1 885 931 B1 relates to a method for providing a localized finish on a textile product. The process theory there focuses on a locally limited surface treatment. In this regard, an arrangement of digitally controlled nozzles is to be used. A surface treatment composition is fed to the nozzles in order to carry out a selective application of the composition via the nozzles.

Die Düsen sind dabei so ausgeführt, dass unterschiedliche Oberflächenbehandlungs-Zusammensetzungen auf das Substrat in unterschiedlichen Mustern aufbringbar sind.The nozzles are designed in such a way that different surface treatment compositions can be applied to the substrate in different patterns.

Die Zusammensetzungen können antistatische, antimikrobielle, medizinische Wirkstoffe, Knitterschutzwirkstoffe, flammenhemmende Wirkstoffe oder ähnliches umfassen.The compositions may include antistatic, antimicrobial, medicinal agents, anti-wrinkle agents, flame retardant agents or the like.

Die EP 1 866 385 B1 bezieht sich auf eine Zusammensetzung für eine kontinuierliche Tintenstrahlveredelung eines textilen Erzeugnisses.The EP 1 866 385 B1 refers to a composition for continuous inkjet finishing of a textile product.

Diese Zusammensetzung geht auf eine Dispersion oder Emulsion eines funktionalen Endbearbeitungsmittels in einem Trägerstoff unter Nutzung eines Leitfähigkeitssalzes zurück. Die Zusammensetzung zum Zweck der Endbearbeitung einer Textilware wird mittels Durchlass-Tintenstrahldüsen aufgebracht.This composition is based on a dispersion or emulsion of a functional finishing agent in a carrier using a conductive salt. The composition for the purpose of finishing a textile product is applied by means of through-flow inkjet nozzles.

Auf die Reinigung von Druckdüsen wird in der DE 10 2014 008 183 A1 abgestellt.The cleaning of print nozzles is not covered in the EN 10 2014 008 183 A1 switched off.

Hinsichtlich der EP 1 670 983 B1 verbleibt festzustellen, dass ein Druckbeschichten textiler Faserstoffe vorbekannt ist. Ein Beschichtungspixel soll gemäß der dortigen Lehre vier Maschenöffnungen bedecken und einen Durchmesser von mehr als 100 µm aufweisen.With regard to the EP 1 670 983 B1 It remains to be noted that pressure coating of textile fiber materials is already known. According to the teaching therein, a coating pixel should cover four mesh openings and have a diameter of more than 100 µm.

Bei der EP 1 573 109 B1 geht es um das Transportieren von Textilartikeln unter Nutzung einer Veredelungsvorrichtung, welche eine Anzahl von Druckdüsen aufweist.At the EP 1 573 109 B1 It involves the transport of textile articles using a finishing device which has a number of printing nozzles.

Auch bei der EP 1 675 995 B1 soll das Ausrüsten eines Textilartikels mittels Düsenanordnung zum Auftragen von Substanzen auf das Textil erfolgen. Bei den Düsen kommen sogenannte Multi-Deflecting-Tintenstrahldüsen zum Einsatz. Gemäß der EP 1 871 947 B1 erfolgt ein Abscheiden mittels Inkjet-Technik auf ein Textilsubstrat, wobei als Trägermittel Wasser eingesetzt wird.Also in the EP 1 675 995 B1 The finishing of a textile article is to be carried out using a nozzle arrangement for applying substances to the textile. The nozzles used are so-called multi-deflecting inkjet nozzles. According to the EP 1 871 947 B1 Deposition is carried out using inkjet technology on a textile substrate, with water being used as a carrier medium.

US 4580304 A offenbart ein Verfahren zur Veredelung von flächenförmigen, textilen Materialien durch Auftragen von flüssigen Farbstoffen, mittels gesteuertem, gezieltem Auftragen der flüssigen Farbstoffe unter Anwendung von Drucktechnologien in Form von mehreren, im Abstand angeordneten, Druckbalken mit einer Vielzahl von Druckköpfen, wobei die flüssigen Farbstoffe mit mehreren Druckköpfen aufgetragen werden, sowie weiterhin die als Warenbahn vorliegenden, flächenförmigen textilen Materialien frei über Walzen geführt werden. US 4580304 A discloses a method for finishing sheet-like textile materials by applying liquid dyes, by means of controlled, targeted application of the liquid dyes using printing technologies in the form of several spaced-apart printing bars with a plurality of printing heads, wherein the liquid dyes are applied with several printing heads, and furthermore the sheet-like textile materials present as a web are guided freely over rollers.

Es verbleibt an dieser Stelle festzuhalten, dass digitale Drucktechnologien im Bereich der Textilveredelung vom Grundsatz her bekannt sind.It should be noted at this point that digital printing technologies are basically known in the field of textile finishing.

Es hat sich jedoch gezeigt, dass Probleme bei der vollständigen und ausreichenden Durchdringung des Textilmaterials bestehen und im Übrigen Einschränkungen bei der Drucktechnologie vorliegen, wenn es darum geht, sehr schnell die einzelnen Druckköpfe auf andere Ausrüstungssubstanzen umzustellen. Aus dem Vorgenannten ist es daher Aufgabe der Erfindung, ein weiterentwickeltes Verfahren zur Veredelung von flächenförmigen, textilen Materialien durch Ausrüsten mit flüssigen Substanzen oder Substanzgemischen anzugeben, wobei die Substanzen oder Substanzgemische Partikel in gleicher oder unterschiedlicher Größe enthalten können, und zwar mittels gesteuertem, gezieltem Auftragen unter Anwendung von Drucktechnologien. Dabei geht es erfindungsgemäß darum, auch größere Materialmengen mit höheren Viskositäten und, falls notwendig, Materialien mit Partikeln größerem Durchmessers zu verarbeiten. Gleichzeitig ist ein schnelles Umstellen und produktions¬technologisches optimales Anpassen der eingesetzten Druckeinrichtungen eine zu lösende Teilaufgabe.However, it has been shown that there are problems with the complete and sufficient penetration of the textile material and that there are also limitations in the printing technology when it comes to switching the individual print heads to other finishing substances very quickly. In view of the above, it is therefore the object of the invention to provide a further developed method for finishing sheet-like textile materials by finishing with liquid substances or mixtures of substances, whereby the substances or mixtures of substances can contain particles of the same or different sizes, by means of controlled, targeted application using printing technologies. The aim of the invention is to process larger quantities of material with higher viscosities and, if necessary, materials with particles of larger diameter. At the same time, rapid switching and Optimal adaptation of the printing equipment used in terms of production technology is a sub-task that needs to be solved.

Gemäß den Lösungen des Standes der Technik wird weit überwiegend auf die Nutzung sogenannter Förderer verwiesen, die der Aufnahme und der Führung einer zu beschichtenden textilen Warenbahn dienen. Derartige mit der Warenbahn verbundene Förderer behindern jedoch die notwendige Penetration des textilen Materials und erschweren den Zugang und damit auch die Reinigung der Druckvorrichtung, insbesondere der Druckköpfe.According to the state of the art solutions, reference is predominantly made to the use of so-called conveyors, which serve to receive and guide a textile web to be coated. However, such conveyors connected to the web hinder the necessary penetration of the textile material and make access and thus cleaning of the printing device, in particular the print heads, more difficult.

Die Lösung der Aufgabe der Erfindung erfolgt mit einer Lehre gemäß der Definition nach Anspruch 1, wobei die Unteransprüche mindestens zweckmäßige Ausgestaltungen und Weiterbildungen umfassen.The object of the invention is achieved with a teaching according to the definition in claim 1, wherein the subclaims comprise at least expedient embodiments and further developments.

Ein diesbezüglicher Kerngedanke der Erfindung besteht darin, dass die zu behandelnde Warenbahn ohne Fixierung des Bandes über einen Tisch oder Walzen frei laufengelassen wird. Hierdurch ergeben sich besonders gute Möglichkeiten hinsichtlich des Saugens oder Abquetschens nach dem Auftrag mit dem Ziel einer optimierten Penetration in das Textil, aber auch hinsichtlich eines notwendigen Spülens oder Reinigens nebst einfacher Wartung durch Zugang der Düsen von der Unterseite ohne störendes Transportband.A key idea of the invention in this regard is that the web of material to be treated is allowed to run freely over a table or rollers without the belt being fixed. This creates particularly good options for suction or squeezing after application with the aim of optimised penetration into the textile, but also for any necessary rinsing or cleaning as well as simple maintenance by accessing the nozzles from the underside without an annoying conveyor belt.

Ein Produktwechsel ist schneller möglich, da das Drucksystem gespült und gemäß der erfindungsgemäßen Lehre anschließend mit neuen Substanzen gefüllt werden kann.A product change is possible more quickly because the pressure system can be flushed and then filled with new substances according to the teaching of the invention.

Es wird demnach von einem Verfahren zur Veredelung von flächenförmigen, textilen Materialien, wie Geweben, Gestricken oder Gewirken ausgegangen, und zwar durch Ausrüsten mit flüssigen Substanzen oder Substanzgemischen.It is therefore assumed that this is a process for finishing flat textile materials, such as woven, knitted or crocheted fabrics, by treating them with liquid substances or mixtures of substances.

Die Substanzen oder die Substanzgemische enthalten Partikel in gleicher, aber auch unterschiedlicher Größe.The substances or mixtures of substances contain particles of the same or different sizes.

Die Veredelung durch Ausrüsten erfolgt mittels gesteuertem, gezieltem Auftragen einer entsprechenden Flotte unter Anwendung von Drucktechnologien in Form von Einzeldruckköpfen oder einem oder mehreren Druckbalken mit einer Vielzahl von Druckköpfen.Finishing by finishing is carried out by means of controlled, targeted application of an appropriate fleet using printing technologies in the form of individual print heads or one or more print bars with a large number of print heads.

Hier wird entweder eine rezepturbasierte Mischung eines Compounds erstellt und ein anschließendes Auftragen vorgenommen oder es werden die Einzelsubstanzen mit mehreren Druckköpfen nass-in-nass zu einer gemischten Ausrüstungsschicht aufgetragen.Here, either a recipe-based mixture of a compound is created and then applied, or the individual substances are applied wet-on-wet using multiple print heads to form a mixed finish layer.

Weiterhin werden die als Warenbahn vorliegenden, flächenförmigen textilen Materialien frei geführt, insbesondere frei über Walzen oder einen Tisch geführt. Im Freiraum zwischen den Walzen, unterhalb der auszurüstenden Warenbahn befindet sich eine Reinigungswanne zur Druckkopfspülung und/oder eine Saugeinrichtung zur optimierten Penetration der Ausrüstung in die Warenbahn. Bei einer alternativen Ausführungsform der Erfindung befindet sich oberhalb der Warenbahn, in Warenbahntransportrichtung vor oder hinter der Druckkopfanordnung eine Reinigungswanne.Furthermore, the flat textile materials present as a web are guided freely, in particular freely over rollers or a table. In the free space between the rollers, below the web of material to be finished, there is a cleaning tray for rinsing the print head and/or a suction device for optimizing the penetration of the finishing into the web of material. In an alternative embodiment of the invention, a cleaning tray is located above the web of material, in the direction of web transport in front of or behind the print head arrangement.

Die Reinigungswanne kann relativ zu den Druckköpfen bewegt werden, sodass auch ohne Entfernen der Warenbahn ein Reinigen bzw. ein Spülen der Druckköpfe möglich wird, um z.B. unterschiedliche Ausrüstungen aufzutragen, ohne den Fertigungsprozess durch Ab- bzw. Aufspannen der Warenbahn zu stören.The cleaning tray can be moved relative to the print heads, so that the print heads can be cleaned or rinsed without removing the web, for example to apply different finishes without disrupting the production process by removing or installing the web.

Der Ausrüstungsstation mittels Druckköpfen folgend, kann ein Quetschwerk vorgesehen sein, dem eine großflächige Trocknungseinrichtung nachgeschalten ist, sodass die behandelte Warenbahn getrocknet auf einen Wickler gelangt.Following the finishing station by means of printing heads, a squeezing device can be provided, followed by a large-area drying device so that the treated web is dried and transferred to a winder.

Die Druckköpfe sind bevorzugt als Einzeldruckköpfe mit einer jeweils linearen Anordnung mehrerer Druckdüsen realisiert.The print heads are preferably implemented as individual print heads with a linear arrangement of several print nozzles.

Bezogen auf die Transportrichtung der Warenbahn liegen die Druckköpfe in einer Reihe nebeneinander und können unter einem Winkel schräg zur Warenbahn orientiert sein, sodass ein gleichmäßiges Auftragen der jeweiligen Ausrüstung möglich wird. Bevorzugt beträgt der Winkel der Schrägstellung zur Warenbahn 45°.In relation to the transport direction of the web, the print heads are arranged in a row next to each other and can be oriented at an angle to the web, so that the respective equipment can be applied evenly. The angle of inclination to the web is preferably 45°.

Ausgestaltend kann die Saugeinrichtung als Saugwalze mit Saugschlitz ausgebildet sein und es liegt die Warenbahn mindestens im Bereich des Saugspaltes auf der Saugwalze auf bzw. berührt diese oder wird im geringen Oberflächenabstand über dem Saugschlitz der Saugwalze geführt.The suction device can be designed as a suction roller with a suction slot and the web rests on the suction roller at least in the area of the suction gap or touches it or is guided at a small surface distance above the suction slot of the suction roller.

Nach dem Ausrüstungsschritt kann ein Abquetschen der Warenbahn dann vorgenommen, wenn eine beidseitige Beschichtung erfolgte. Bei einseitiger Beschichtung kann auf das Abquetschen verzichtet werden.After the finishing step, the web can be squeezed off if both sides have been coated. If one side has been coated, the squeezing off is not necessary.

Diesbezüglich besteht die Möglichkeit ein an sich bekanntes Quetschwalzenpaar in Bewegungsrichtung den Druckköpfen nachgeordnet vorzusehen.In this regard, it is possible to provide a known pair of squeeze rollers downstream of the print heads in the direction of movement.

Bevorzugt ist die Reinigungswanne entfernbar, um einen Reinigungszugang zu den Druckköpfen zu schaffen.Preferably, the cleaning tray is removable to provide access to the print heads for cleaning.

Die Reinigungswanne kann dabei nicht nur Reinigungs- und Spülflüssigkeiten aufnehmen, sondern auch gleichzeitig abtropfende Flotte auffangen.The cleaning tub can not only hold cleaning and rinsing liquids, but also collect dripping liquid at the same time.

Durch die freie Führung der auszurüstenden Warenbahn wird verhindert, dass sich textile Bestandteile lösen und in die gegebenenfalls abtropfende Flotte gelangen. Der Tisch ist unter diesem Aspekt als eine Lochplatte oder ein Lochblech mit einer Vielzahl von Durchbrüchen ausgebildet.The free guidance of the web of fabric to be finished prevents textile components from coming loose and getting into the dripping liquor. With this in mind, the table is designed as a perforated plate or sheet with a large number of openings.

Claims (5)

  1. Method for enhancing flat textile materials by finishing with liquid substances or substance mixtures, wherein the substances or substance mixtures contain particles of the same or different sizes, by means of controlled, targeted application of a liquor using printing technologies in the form of one or more print bars arranged at a distance and having a plurality of print heads, wherein either a recipe-based mixture of a compound is created, followed by the application, or individual substances are wet-applied with a plurality of print heads to form a mixed finishing layer, and furthermore the flat textile materials, which are present in the form of a fabric web, are freely guided over rollers or a perforated plate or perforated sheet table with a plurality of apertures and a cleaning trough for rinsing the print head is provided in the free space between the rollers or the perforated plate or perforated sheet table above the fabric web to be finished and said cleaning trough is formed adjacent to the pressure bar having the plurality of print heads, wherein a movability is provided between the print heads and the cleaning trough in order to carry out print head cleaning or print head rinsing without removing the fabric web, so that different finishes can be applied without disturbing the production process by unclamping or clamping the fabric web.
  2. Method according to claim 1, characterized in that a suction device is provided below the fabric web for optimum penetration of the finish into the fabric web and the suction device is designed as a suction roller with a suction slot and the fabric web rests on the suction roller at least in the region of the suction slot or is guided past it in close proximity.
  3. Method according to claim 1 or 2, characterized in that the fabric web is optionally squeezed after the finishing step.
  4. Method according to claim 1, characterized in that the cleaning trough can be removed in order to provide cleaning access to the print heads.
  5. Method according to one of the preceding claims, characterized in that, after the finishing step, the finished fabric web is dried in a downstream module unit in order to enable the fabric web to be wound up directly by means of a winder for subsequent further processing.
EP20704222.7A 2019-03-22 2020-02-03 Method for enhancing flat textile materials via finishing Active EP3942102B1 (en)

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DE102020101672.7A DE102020101672A1 (en) 2019-03-22 2020-01-24 Process for the refinement of flat textile materials by finishing
PCT/EP2020/052572 WO2020192986A1 (en) 2019-03-22 2020-02-03 Method for enhancing flat textile materials via finishing

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EP3942102A1 (en) 2022-01-26
DE102020101672A1 (en) 2020-09-24
WO2020192986A1 (en) 2020-10-01

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