WO2017211496A1 - Procédé et dispositif de prétraitement d'un textile à imprimer - Google Patents

Procédé et dispositif de prétraitement d'un textile à imprimer Download PDF

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Publication number
WO2017211496A1
WO2017211496A1 PCT/EP2017/059618 EP2017059618W WO2017211496A1 WO 2017211496 A1 WO2017211496 A1 WO 2017211496A1 EP 2017059618 W EP2017059618 W EP 2017059618W WO 2017211496 A1 WO2017211496 A1 WO 2017211496A1
Authority
WO
WIPO (PCT)
Prior art keywords
textile
treatment composition
printed
treating
printing
Prior art date
Application number
PCT/EP2017/059618
Other languages
German (de)
English (en)
Inventor
Angelo Schiestl
Original Assignee
Aeoon Technologies 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
Application filed by Aeoon Technologies GmbH filed Critical Aeoon Technologies GmbH
Publication of WO2017211496A1 publication Critical patent/WO2017211496A1/fr

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Classifications

    • 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
    • D06P5/20—Physical treatments affecting dyeing, e.g. ultrasonic or electric
    • D06P5/2066—Thermic treatments of textile materials
    • D06P5/2072—Thermic treatments of textile materials before dyeing
    • 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
    • D06P5/20—Physical treatments affecting dyeing, e.g. ultrasonic or electric
    • D06P5/2044—Textile treatments at a pression higher than 1 atm
    • D06P5/205—Textile treatments at a pression higher than 1 atm before dyeing
    • 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
    • D06P5/30—Ink jet printing

Definitions

  • the invention relates to a method for pretreating a textile to be printed, in which the textile is wetted, at least in a printing area, in which at least one printing ink is applied, with a treatment composition, by which threads of the textile are sealed, according to the preamble of claim 1.
  • the invention relates to a device for pretreating at least one textile to be printed according to claim 7.
  • the invention also relates to a treatment composition according to claim 12.
  • one of the challenges is to produce consistent, crisp print images on the widely varying surfaces of textile media made from a variety of different materials and techniques.
  • a colored primer is applied to the intended printed image areally. This can be perceived as aesthetically disadvantageous depending on the intended use and print motif.
  • printing ink provided on a primer ink layer may have adverse abrasion and washing resistant properties because of adhesion of paint to fabrics differs fundamentally from the binding force between individual layers of paint.
  • the print image is applied a short time after the primer, with the primer and print image are then fixed together. Once a primer has reached a certain hardness or degree of dryness, the ability of the print image to adhere to the primer may decrease in a sustained manner. Therefore, in such a process, a rapid further processing of the primed textile to the printed end product may be required.
  • the invention is based on the invention to provide a method and apparatus for pretreating a textile to be printed, which allows a reliable adhesion of the ink to the textile regardless of the surface texture of the textile, wherein pretreatment and printing of the textile can be carried out independently of each other in time.
  • the inventive method is characterized in that the treatment composition is first dried on the textile and that the dried treatment composition is activated prior to printing, wherein at least the pressure range provided with the treatment fluid is pressed under heat.
  • the device according to the invention for pretreating at least one textile to be printed on is characterized in that it has a wetting device which is designed to wet the at least one textile on a printing side in a printing area with a treatment composition that it has a drying device, which is designed to reduce at least one solvent fraction in the treatment composition in that it has a heating device which is designed to supply the treatment composition at least in the pressure region on the at least one textile wherein the treatment composition is activatable on the at least one textile for sealing the surface of the textile, and that it comprises a pressing device which is adapted to press the at least one textile at least in the printing area, wherein at least in the printing area the surface of the textile smoothed.
  • the treatment composition according to the invention is characterized in that at least one thermoplastic component is provided, which is dissolved in a solvent.
  • a basic idea of the invention is to provide a pretreatment process for textile printing in which a treatment composition which is activatable under the action of heat and pressure is applied to the textile to be printed.
  • the activation of the treatment composition at any time before printing, in particular only directly, so immediately before it, be performed.
  • Pretreatment and printing can be carried out independently of each other in terms of time.
  • a further basic idea of the invention is to provide a device for pretreating at least one textile to be printed, which is designed to wet the textile to be printed with a treatment composition and to prepare it for activation by reducing a proportion of volatiles, at least partially pretreated textile can be stored up to a printing.
  • the device is further configured to activate the treatment composition under the action of heat and / or pressure before printing, wherein a uniform textile surface is provided for printing.
  • Another basic idea of the invention is to provide at least one substance with which a textile surface can be treated in dissolved form, the solvent being removable, as a result of which the substance is released again, for example as a solid.
  • the at least one substance can be dissolved in dissolved form. has a lower viscosity than when the solvent is at least partially removed.
  • a preferred embodiment of the method according to the invention is that the threads of the textile have a multiphile structure which is sealed by means of the activated treatment composition in the printing area, avoiding penetration of printing ink into the multiphile structure.
  • a multiple fiber may be characterized in particular by a proportion of uneven surface with irregularly protruding in the space thread parts and a twisted structure.
  • the position of an ink droplet on a printed textile and its surface and contour can be adversely affected by physical influences of the textile, such as, for example, electrostatic or capillary forces, which occur in particular in the case of fibrous or multiphilic structures. Due to the influences can basically a deterioration of the print image sharpness occur.
  • a particularly preferred embodiment of the invention is that the multiphile structure of the area to be printed is smoothed, wherein in the area a reduction of interactions between textile and ink, in particular of interactions, the surface tension and / or shape of ink on the textile influence is effected. Smoothing the fabric in the print area can further reduce the interaction between ink droplets and fabric.
  • an advantageous rectification of the fibrous structure of a textile to be printed can be effected.
  • a thread or a fiber of a textile to be printed can not only be sealed, but also adapted to the requirements of textile printing in terms of spatial orientation.
  • an ink droplet can be provided in a particularly accurate position and can be exposed to lesser interactions with the textile.
  • the multiplicity of different interactions between the material of the textile to be printed and the ink used can also take place simultaneously.
  • physical repulsive (off) or attractive (on) forces such as, for example, hydrophilic-hydrophilic (on), hydrophobic-hydrophobic (on), hydrophilic-hydrophobic (ab), and van der Waals interactions between textile and ink to carry.
  • These can change or influence the behavior of individual ink droplets on the textile, in particular their surface tension. This can promote a flow of the otherwise clearly defined ink droplet contour into the tissue, which can result in disadvantageous blurring of the printed image.
  • the wetting composition according to the invention may be configured to seal threads and fibers of the pretreated textile, thereby providing a textile surface which has at least minor interactions with ink droplets, in particular uniform or smooth.
  • An expedient embodiment of the invention consists in that a solvent is removed during drying of the treatment composition, leaving behind a thermoplastic component. Reducing the proportion of solvent can contribute to the treatment composition adhering to the textile in a particularly stationary manner until it is activated. The risk of transferring treatment composition to other surfaces, in particular other areas of the textile or other textile parts is thereby limited.
  • drying by means of heated air or heat radiation can be accomplished in order to remove the proportion of solvent in the applied treatment composition. It is particularly preferred that when drying the treatment composition, the temperature during the heat drying is lower than the melting temperature range of at least that of the thermoplastic component. The removal of the solvent portion may be proportionate or complete as needed, whereby a viscosity but also a strength of the dried treatment composition is adjustable.
  • a solvent content can also by applying a reduced pressure, which is in particular smaller than the ambient pressure surrounding the drying apparatus, to be changed.
  • solvent can be removed from the treatment composition particularly efficiently leaving nonvolatile components such as the thermoplastic component.
  • the components of the treatment composition remaining on the textile can in particular be those which contribute to the sealing, ie to the pretreatment, of the textile surface.
  • thermoplastic component is melted by the heat treatment and pressing and that the molten thermoplastic component is distributed at least on the surface of the threads.
  • the activation of the treatment composition on the textile can be achieved in particular by an interaction of heat and pressure.
  • a temperature can be set which is greater than or equal to the melting range of at least the thermoplastic component, whereby a flowability of the treatment composition, in particular of the thermoplastic component, can be achieved.
  • Particularly effective is the activation of the treated textile at a pressure of 2 bar to 100 bar, more preferably at 25 bar to 75 bar pressing pressure.
  • a particularly uniform distribution of the thermoplastic component can be achieved on the surface of the threads, which in particular can be beneficial to a smoothing of multiphile or fibrous portions of the textile.
  • a further preferred embodiment of the invention is that the textile after the pretreatment by a wet printing process, in particular by an inkjet process is printed with at least one ink.
  • ink droplets such as occur in a wet printing process, can be provided particularly precisely on the textile.
  • the pretreatment of the textile can counteract a runaway of the ink droplet and a wandering of the individual ink droplets on the textile.
  • the wetting device has at least one nozzle, by means of which the treatment composition is providable at least in the printing area.
  • the treatment composition can be provided in particular in fluidic form or with a viscosity which allows application to a textile to be pretreated with a nozzle.
  • a plurality of nozzles are used, whereby the pretreatment of the textile to be printed can be carried out in a particularly time-saving manner.
  • the nozzles are individually controllable to apply individually treatment composition on the textile.
  • it may be expedient to heat the wetting composition before application, which may be beneficial for improved nozzle flow.
  • at least one heated nozzle can be provided for this purpose.
  • a particularly efficient embodiment of the present invention is that the textile and the wetting device can be delivered to each other as needed. As a result, a particularly rapid pretreatment of the textile with the treatment composition can be achieved. Textile and wetting device can be arranged in each case and independently movable on the device for pretreatment, which allows not only the surface wetting of the textile, but also individually shaped wetting areas on the textile. This can promote a particularly gentle use of wetting composition.
  • a further embodiment of the invention consists in that the heating device and the pressing device are designed to simultaneously act on the wetted textile.
  • the textile can be pretreated in a particularly advantageous manner, wherein a particularly uniform distribution, in particular of the thermoplastic component, can be achieved in the textile.
  • the pressing device can help to provide a particularly flat surface for printing on the textile, which may be particularly poor on protruding fibers of the textile.
  • the heating device melts the treatment composition, at least begins before it is pressed.
  • the pretreatment device is designed as a continuous device, which is providable in a flow process, by means of which one of the pretreatment devices downstream printing device successively pretreated textile undeliverable is.
  • the pretreatment device may be provided with a conveyor belt or other suitable means for the continuous transport of textile through the pretreatment device.
  • a region for supplying textile to be pretreated is preferably provided at a first end of the device, the pretreated textile being discharged pretreated at a second, in particular opposite, end of the device.
  • the discharged textile with activated treatment composition can be stored temporarily or fed directly to the printing device for providing a printed image on the textile.
  • thermoplastic component is provided, which is dissolved in a solvent.
  • polymers in particular thermoplastics can be used in a particularly expedient manner. These preferably have a solid state of aggregation at room temperature, but can easily be reversibly converted into a liquid state by means of heat.
  • solvents in particular with volatile organic solvents, such as acetates, ketones, ethers, alkyl alcohols or mixtures thereof, to form a thermoplastic solution.
  • the solutions formed have a viscosity which increases with increasing temperature and increasing proportion of solvent. seffen can fall.
  • thermoplastic By removing at least a proportion of solvent, a solid state of the thermoplastic can be restored or a viscosity can be adjusted.
  • thermoplastic it is also possible to provide further substances in the solution which advantageously influence the pretreatment of the textile, in particular a stationary, low-interaction provision of liquid ink on the textile.
  • thermoplastic component comprises a thermoplastic polymer, in particular polyamides, polystyrenes, in particular acrylonitrile-butadiene-styrenes, polyacrylates, polytherephthalates, in particular polyethylene terephthalates, polyalkylenes, in particular polyethylenes or polypropylenes, polyetheretherketones, polyvinylchlorides , Copolymers and / or block copolymers thereof and mixtures thereof.
  • the thermoplastic component in particular the thermoplastic polymer, has a melting temperature range lower than the temperature at which the fabric to be pretreated suffers damage due to the action of heat.
  • the thermoplastic component has a melting temperature range between 60 ° C and 300 ° C, more preferably between 80 ° C and 150 ° C.
  • FIG. 1 shows a perspective view of a device according to the invention for pretreating a textile to be printed.
  • the device 10 can be provided for a flow process in which textile 1 to be printed can be transported on a conveyor belt 1 1 as a conveying device from a first end of the device 10 to a second end of the device 10.
  • the transport direction of the textile is shown in Fig. 1 by the two arrows at the front and rear ends of the device 10.
  • a textile 1 is ner wetting device 20 in a region 2 on the textile 1 with treatment composition 22 wetted.
  • a print image with special image definition can be provided in this area.
  • the wetting device 20 may in particular be formed with at least one nozzle 21, through which the treatment composition 22 is applied to the textile 1.
  • the at least one nozzle 21 can be provided so as to be movable on a transverse bar 23 of the wetting device 20 transversely to a conveying direction of the device 1.
  • the at least one nozzle 21 can thus be delivered to a respective area 2 on the textile 1 in a transverse direction to the conveying direction of the textile 1.
  • the textile 1 can be delivered on the conveyor belt 1 1 of the wetting device 20, in particular the nozzle 21 in a longitudinal direction of the device 10.
  • the longitudinal direction extends along the direction of the conveyor belt 1 1.
  • the wetting device 20 can receive the treatment composition 22 via a feed line from a storage container.
  • a drying device 30 can be arranged in the running direction of the conveyor belt 1 1. This can at least on a crossbar 31 means for emitting heat or heat radiation 32, in particular heating coils or heat radiator, or be formed with a hot air supply for drying the wetted textile.
  • the drying device 30 can also be designed as a vacuum chamber, in which under reduced pressure at least one solvent content for drying the treatment composition 22 on the textile 1 is reduced, preferably removed. Drying can also be achieved by a combination of reduced pressure and heat, whereby a particularly efficient drying can be achieved.
  • the solvent can be removed from the vacuum chamber, for example via a device for discharging gases.
  • the treatment composition 22 can be activated at least in the region 2 by means of the heating and pressing device 40.
  • the pressure surface 41 are pressed onto the textile, whereby a particularly favorable distribution, in particular the molten thermoplastic component, can be achieved in the textile.
  • the melting can be achieved in particular by delivering the heated pressure surface 41 to the textile, which can be heated by a heater 42, for example.
  • the surface of the textile 1 can also be smoothed. This can provide a particularly flat surface of the textile 1 for printing.
  • the pressure surface 41 may cover at least the area to be activated or, as shown in FIG.
  • the wetting-20, drying-30, heating / pressing-40 and printing device 50 may in particular be formed with a gantry guide, on which the respective means for treating and processing the textile may be arranged.
  • the pretreated textile can be delivered to a printing device 50, which can print the pretreated textile in the pretreated region by means of at least one movable print head 51.
  • the printhead 51 can be designed in particular as an inkjet printhead.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Ink Jet (AREA)
  • Coloring (AREA)

Abstract

L'invention concerne un procédé ainsi qu'un dispositif de prétraitement d'un textile à imprimer, selon lequel le textile est imprégné d'une composition de traitement au moins dans une zone d'impression dans laquelle est appliquée au moins une encre d'impression qui assure le scellement des fils du textile. A cet effet, la composition de traitement est tout d'abord séchée sur le textile et la composition de traitement séchée est activée avant l'impression, au moins la zone d'impression pourvue du fluide de traitement est aplatie sous presse avec apport de chaleur.
PCT/EP2017/059618 2016-06-09 2017-04-24 Procédé et dispositif de prétraitement d'un textile à imprimer WO2017211496A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16173652.5 2016-06-09
EP16173652.5A EP3255205B1 (fr) 2016-06-09 2016-06-09 Procédé et dispositif pour le pré-traitement d'un textile à imprimer

Publications (1)

Publication Number Publication Date
WO2017211496A1 true WO2017211496A1 (fr) 2017-12-14

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ID=56263503

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/059618 WO2017211496A1 (fr) 2016-06-09 2017-04-24 Procédé et dispositif de prétraitement d'un textile à imprimer

Country Status (2)

Country Link
EP (1) EP3255205B1 (fr)
WO (1) WO2017211496A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070067928A1 (en) 2005-09-15 2007-03-29 Ellis Scott W Fabric pretreatment for inkjet printing
GB2469477A (en) * 2009-04-15 2010-10-20 Your Embroidery Services Ltd Textile printed with a treatment aid, which is then overprinted
US20150118419A1 (en) * 2012-06-04 2015-04-30 Hewlett-Packard Development Company, L.P. Fabric print media
WO2015130498A2 (fr) * 2014-02-28 2015-09-03 Lubrizol Advanced Materials, Inc. Prétraitement de tissu pour l'impression numérique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070067928A1 (en) 2005-09-15 2007-03-29 Ellis Scott W Fabric pretreatment for inkjet printing
GB2469477A (en) * 2009-04-15 2010-10-20 Your Embroidery Services Ltd Textile printed with a treatment aid, which is then overprinted
US20150118419A1 (en) * 2012-06-04 2015-04-30 Hewlett-Packard Development Company, L.P. Fabric print media
WO2015130498A2 (fr) * 2014-02-28 2015-09-03 Lubrizol Advanced Materials, Inc. Prétraitement de tissu pour l'impression numérique

Also Published As

Publication number Publication date
EP3255205B1 (fr) 2019-08-07
EP3255205A1 (fr) 2017-12-13

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