EP3568521B2 - Transfer paper for sublimation printing, comprising a cationic agent - Google Patents

Transfer paper for sublimation printing, comprising a cationic agent Download PDF

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Publication number
EP3568521B2
EP3568521B2 EP18700329.8A EP18700329A EP3568521B2 EP 3568521 B2 EP3568521 B2 EP 3568521B2 EP 18700329 A EP18700329 A EP 18700329A EP 3568521 B2 EP3568521 B2 EP 3568521B2
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EP
European Patent Office
Prior art keywords
transfer paper
face
agent
equal
cationic
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
EP18700329.8A
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German (de)
French (fr)
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EP3568521B1 (en
EP3568521A1 (en
Inventor
Thierry Mayade
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Ahlstrom Corp
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Ahlstrom Corp
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Classifications

    • 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
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/382—Contact thermal transfer or sublimation processes
    • B41M5/38235—Contact thermal transfer or sublimation processes characterised by transferable colour-forming materials
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
    • D21H17/44—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups cationic
    • D21H17/45—Nitrogen-containing groups
    • D21H17/455—Nitrogen-containing groups comprising tertiary amine or being at least partially quaternised
    • 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
    • B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
    • B41M5/035—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of pre-printed design, e.g. sublistatic
    • 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
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
    • B41M5/41—Base layers supports or substrates
    • 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
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • 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
    • D06P5/003—Transfer printing
    • D06P5/004—Transfer printing using subliming dyes
    • D06P5/006—Transfer printing using subliming dyes using specified dyes
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
    • D21H17/56—Polyamines; Polyimines; Polyester-imides
    • 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
    • B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
    • B41M5/035—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of pre-printed design, e.g. sublistatic
    • B41M5/0355—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of pre-printed design, e.g. sublistatic characterised by the macromolecular coating or impregnation used to obtain dye receptive properties
    • 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
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • B41M5/5245—Macromolecular coatings characterised by the use of polymers containing cationic or anionic groups, e.g. mordants
    • 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
    • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/34—Material containing ester groups
    • D06P3/52—Polyesters

Definitions

  • the present invention relates to transfer papers for sublimation printing, and more particularly but not exclusively those printable by inkjet printing.
  • Sublimation printing provides an image on a support, such as metal, glass, plastic surface or fabric, using sublimable inks.
  • Printing of sublimable inks can be done by direct printing of the sublimable inks on the final support or by indirect printing.
  • indirect printing the inks are first printed on a paper, called transfer paper, then the image printed on the transfer paper is transferred by transfer presses to the final support.
  • Requirement US 2008/0229962 describes such a printing process.
  • the demand EP 2965919 A1 discloses a transfer paper comprising a reservoir layer having an external face configured to receive a sublimable ink and a barrier layer, applied to the internal face of the reservoir layer, and configured to form a barrier to the vehicle of the sublimable ink.
  • the reservoir layer may further comprise a cationic polymer in a small proportion to fix the dyes of the sublimable ink to the surface of the transfer paper.
  • Requirement WO00/06392 describes a transfer paper comprising a barrier layer having a porosity of at most 100 ml/min.
  • WO2008/006434 discloses a paper comprising a layer comprising a semi-synthetic polymer with thermoplastic property.
  • Transfer papers for sublimation printing that can be printed by inkjet printing generally include a barrier layer based on a hydrophilic polymer, such as carboxy methyl cellulose, starch, or polyvinyl alcohol, more or less charged with pigments with a low specific surface area, such as kaolin or calcium carbonate, or with a high specific surface area, such as silicas.
  • a hydrophilic polymer such as carboxy methyl cellulose, starch, or polyvinyl alcohol
  • barrier layer based on hydrophilic polymer leads to a long drying time, limiting printing speeds and causing color mixtures and smudges affecting print quality.
  • Cationic agents are usually used in small proportions as ink fixing agents for inkjet printing with the aim of retaining the ink on the surface and preventing bleeding of the ink into the water.
  • a cationic agent in a higher proportion in the invention surprisingly makes it possible to ensure good transfer by sublimation, the ink being unexpectedly poorly retained in the transfer paper during sublimation.
  • the transfer paper according to the invention has good printability, thanks in particular to the immobilization of the ink on the surface by the cationic agent(s).
  • the immobilization of the ink pigments on the surface of the fibrous substrate by the cationic agent(s) improves the optical density after transfer and limits smudging. The definition is thus improved.
  • the surface treatment can be single-layer or multi-layer.
  • the quantity of the cationic agent(s) is advantageously greater than or equal to 8%, or even 9 or 10%, by dry weight, of the total dry weight of the compound(s) provided by the application of the layer(s) of the surface treatment, as indicated above.
  • the transfer paper may be devoid, at least on the side comprising the cationic agent(s), of mineral filler, also called pigment, or comprise on this side one or more mineral fillers in a quantity less than or equal to 10 g/m 2 .
  • the mineral filler(s) are chosen from calcium carbonate, kaolin, calcined kaolin, talc, TiO2, hydroxides, in particular of aluminum Al(OH)3 or magnesium, sulfates, in particular BaSO4 or CaS04, natural or synthetic aluminum silicate, aluminum oxide, and mixtures thereof. Mineral fillers help block the ink on the surface.
  • the presence of the cationic agent(s) as described in the present invention makes it possible to overcome the presence of mineral fillers, or at least to limit their quantity.
  • the transfer paper may be devoid, at least on the side comprising the cationic agent(s), of binder or comprise on this side one or more binders in a quantity less than or equal to 8 g/m 2 .
  • the binder(s) are preferably chosen from water-soluble binders such as polyvinyl alcohol, starch, gelatin, soy proteins or casein, and mixtures thereof.
  • the cationic agent(s) may be present on a single side of the transfer paper, intended to receive the printing.
  • the cationic agent(s) may be organic cationic agents.
  • the organic cationic agent(s) may be chosen from polyamine epichlorohydrins, in particular from polyepichlorohydrins dimethylamines, polyethyleneimines and organic quaternary ammonium salts, preferably from organic quaternary ammonium salts, the organic cationic agent being in particular polydiallyldimethylammonium chloride, also called PolyDADMAC.
  • the organic cationic agent(s) may be present on said face in a quantity greater than or equal to 0.2 g/m 2 , in particular greater than or equal to 0.6 g/m 2 .
  • Said face may also comprise one or more alkaline earth salts, in particular chosen from calcium salts, preferably from calcium dichloride and calcium nitrate, and magnesium salts, in particular from magnesium sulfate and magnesium chloride, which can also help improve transfer.
  • alkaline earth salts in particular chosen from calcium salts, preferably from calcium dichloride and calcium nitrate
  • magnesium salts in particular from magnesium sulfate and magnesium chloride, which can also help improve transfer.
  • the fibrous substrate before treatment may be free of cationic agent and/or mineral filler and/or binder and/or formulation agents such as dispersant, wetting, thickener, insolubilizer, bonding agent, optical brightener, or dye.
  • the fibrous substrate may comprise natural and/or synthetic fibers, in particular long and/or short cellulose fibers.
  • the transfer paper is preferably printable by inkjet printing.
  • the transfer paper can still be printable by rotary press.
  • the transfer paper preferably has a Bendtsen air permeability greater than or equal to 100 ml/min, in particular greater than or equal to 200 ml/min (according to standard ISO 5636-3).
  • Such air permeability gives the paper an open structure. It ensures rapid drying of the ink applied to the transfer paper. It therefore induces a gain in productivity compared to lower air permeability thanks to an increase in the drying speed of the ink.
  • the transfer paper can have a weight of between 25 and 150 g/m 2 , in particular between 30 and 75 g/m 2 , preferably less than or equal to 50 g/m 2 .
  • Transfer paper is generally single-use.
  • the cationic agent(s) are present on said face in a quantity greater than or equal to 0.2 g/m2, the transfer paper being devoid, on said face, of pigment and binder and formulation agents such as dispersing, wetting, thickening, insolubilizing, bonding agent, optical brightener or coloring agent, or transfer paper comprising on this side one or more pigments, the pigments are chosen from calcium carbonate, kaolin, calcined kaolin, talc, TiO2, hydroxides, in particular of aluminum Al(OH)3 or magnesium, sulfates, in particular BaSO4 or CaSO4, natural or synthetic aluminum silicate, aluminum oxide, and their mixtures, and/or binders and/or formulation agents such as above in an individual quantity, better total, less than or equal to 13 times, in g/m2, the quantity of cationic agent(s) , in particular less than or equal to 12 times, 10 times, 8 times or 5 times.
  • pigment and binder and formulation agents such as dispersing, wetting, thick
  • the invention also relates to a process for manufacturing a transfer paper for sublimation printing, in particular as defined above, in which one or more agents are deposited by a surface treatment on at least one face of a fibrous substrate.
  • cationic the quantity of the cationic agent(s) being greater than or equal to 8%, by dry weight, of the total dry weight of the compound(s) provided by the surface treatment on the fibrous substrate, in particular greater than or equal to 9% or 10% .
  • the invention also relates to a process for manufacturing a transfer paper for sublimation printing, in particular as defined above, in which one or more cationic agents are deposited by a surface treatment on at least one face of a fibrous substrate.
  • the side of the treated transfer paper comprising the cationic agent(s) in a quantity greater than or equal to 0.2 g/m2
  • the transfer paper being devoid on this side of pigment and binder and formulation agents such as dispersant, wetting, thickening, insolubilizing, bonding agent, optical brightener, or colorant, or transfer paper comprising one or more pigments on this side
  • the pigments are chosen from calcium carbonate, kaolin, calcined kaolin, talc, TiO2 , hydroxides, in particular of aluminum Al(OH)3 or magnesium, sulfates, in particular BaSO4 or CaSO4, natural or synthetic aluminum silicate, aluminum oxide, and their mixtures, and/or binders and /or formulation agents such as above in an individual quantity,
  • the surface treatment can be single-layer or multi-layer.
  • the method according to the invention may include the manufacture of the fibrous substrate.
  • Surface treatment can be carried out online or offline.
  • the cationic agent(s) can be deposited on a single side of the fibrous substrate.
  • a composition comprising the cationic agent(s) can be deposited on said face of the fibrous substrate by the surface treatment, and the quantity of the composition deposited on the face of the fibrous substrate can be between 0.2 and 15 g/m 2 in dry weight, preferably between 0.5 and 8 g/m 2 .
  • the surface treatment can be carried out using a gluing press, a film transfer press or a coating system, in particular of the curtain or blade type, air blade, pencil or even by engraved cylinder.
  • the invention also relates to a printed transfer paper for sublimation printing, comprising a transfer paper as defined above and at least one print on the face of the transfer paper comprising the cationic agent(s), in particular an inkjet print of 'at least one sublimable ink.
  • the invention also relates to a method of printing a transfer paper for sublimation printing, in which the face comprising the cationic agent(s) of a transfer paper as defined previously.
  • printing can be carried out by rotary press.
  • Printing can be done for example in four-color process with ink cartridges containing primary color inks, in particular black, cyan, yellow and magenta, and possibly secondary colors.
  • the ink is notably formulated from water-based sublimable pigments.
  • the invention also relates to a process for decorating a support, in which the printing of a transfer paper printed as described above is transferred by sublimation to the support.
  • the support can be a metal, glass, a plastic surface or a fabric, in particular a fabric comprising polyester, preferably a fabric comprising mainly polyester.
  • compositions described in the table below are each deposited with a Meyer bar on one side of a fibrous substrate whose composition and characteristics are described below.
  • the fibrous substrates treated with the compositions form transfer papers.
  • the printing test is carried out on the paper using a SAWGRASS SG400 printer, and the transfer is carried out under press at 200°C for one minute on a polyester fabric.
  • a black ink (SAWGRASS Sublijet black) is deposited on the face of the fibrous substrate treated by the composition. We thus obtain a solid black. Transfer papers treated with ink form printed transfer papers.
  • the optical density after transfer to the polyester fabric is measured using an X-rite 500 spectrodensitometer.
  • Example 1 Example 2
  • Example 3 Example 4
  • Example 5 Calcium carbonate (shares) 20 20 20+80 0 0
  • Optical density (flat black) 1.86 2.14 2.21 2.20 2.22
  • the Bendtsen air permeability of Examples 2 to 5 is greater than 100 mL/min.
  • the transfer papers printed according to the invention of examples 2, 3, 4 and 5 have an optical density greater than the transfer paper printed according to comparative example 1 which is not according to the invention.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Coloring (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Ink Jet (AREA)
  • Paper (AREA)

Description

La présente invention concerne les papiers transfert pour impression par sublimation, et plus particulièrement mais non exclusivement ceux imprimables par impression jet d'encre.The present invention relates to transfer papers for sublimation printing, and more particularly but not exclusively those printable by inkjet printing.

L'impression par sublimation permet de fournir une image sur un support, tel qu'un métal, du verre, une surface plastique ou un tissu, à l'aide d'encres sublimables. L'impression des encres sublimables peut se faire par impression directe des encres sublimables sur le support final ou bien par impression indirecte. Dans le cas de l'impression indirecte les encres sont d'abord imprimées sur un papier, appelé papier transfert, puis l'image imprimée sur le papier transfert est transférée par presses à transfert sur le support final. La demande US 2008/0229962 décrit un tel procédé d'impression.Sublimation printing provides an image on a support, such as metal, glass, plastic surface or fabric, using sublimable inks. Printing of sublimable inks can be done by direct printing of the sublimable inks on the final support or by indirect printing. In the case of indirect printing, the inks are first printed on a paper, called transfer paper, then the image printed on the transfer paper is transferred by transfer presses to the final support. Requirement US 2008/0229962 describes such a printing process.

Les demandes EP 2965919 A1 , WO00/06392 , WO2008/006434 , et WO2016/074671 divulguent des papiers transfert pour impression par sublimation.Requests EP 2965919 A1 , WO00/06392 , WO2008/006434 , And WO2016/074671 disclose transfer papers for sublimation printing.

Plus précisément, la demande EP 2965919 A1 divulgue un papier transfert comprenant une couche réservoir présentant une face externe configurée pour recevoir une encre sublimable et une couche barrière, appliquée sur la face interne de la couche réservoir, et configurée pour former une barrière au véhicule de l'encre sublimable. La couche réservoir peut en outre comprendre un polymère cationique en faible proportion pour fixer les colorants de l'encre sublimable à la surface du papier transfert.More precisely, the demand EP 2965919 A1 discloses a transfer paper comprising a reservoir layer having an external face configured to receive a sublimable ink and a barrier layer, applied to the internal face of the reservoir layer, and configured to form a barrier to the vehicle of the sublimable ink. The reservoir layer may further comprise a cationic polymer in a small proportion to fix the dyes of the sublimable ink to the surface of the transfer paper.

La demande WO00/06392 décrit un papier transfert comprenant une couche barrière ayant une porosité d'au plus 100 ml/min.Requirement WO00/06392 describes a transfer paper comprising a barrier layer having a porosity of at most 100 ml/min.

La demande WO2008/006434 divulgue un papier comprenant une couche comportant un polymère semi-synthétique à propriété thermoplastique.Requirement WO2008/006434 discloses a paper comprising a layer comprising a semi-synthetic polymer with thermoplastic property.

La demande WO2016/074671 décrit un papier comprenant une couche comportant des particules thermoplastiques.Requirement WO2016/074671 describes a paper comprising a layer comprising thermoplastic particles.

Les papiers transfert pour impression par sublimation imprimables par impression jet d'encre comprennent généralement une couche barrière à base de polymère hydrophile, tel que de la carboxy méthyl cellulose, de l'amidon, ou de l'alcool polyvynilique, plus ou moins chargée de pigments de faible surface spécifique, tels que du kaolin ou du carbonate de calcium, ou de forte surface spécifique, tels que des silices.Transfer papers for sublimation printing that can be printed by inkjet printing generally include a barrier layer based on a hydrophilic polymer, such as carboxy methyl cellulose, starch, or polyvinyl alcohol, more or less charged with pigments with a low specific surface area, such as kaolin or calcium carbonate, or with a high specific surface area, such as silicas.

La présence d'une couche barrière à base de polymère hydrophile conduit à un long temps de séchage, limitant les cadences d'impression et engendrant des mélanges de couleurs et bavures altérant la qualité d'impression.The presence of a barrier layer based on hydrophilic polymer leads to a long drying time, limiting printing speeds and causing color mixtures and smudges affecting print quality.

L'introduction de charges permet d'atténuer les inconvénients précités mais induit un surcoût de formulation et/ou une limitation du taux de transfert par sublimation.The introduction of fillers makes it possible to mitigate the aforementioned drawbacks but induces additional formulation costs and/or a limitation of the transfer rate by sublimation.

Il existe donc un besoin, non satisfait à ce jour, d'un moyen d'obtenir un papier transfert pour impression par sublimation, imprimable par impression jet d'encre, ayant une bonne aptitude à l'impression avec un temps de séchage limité, un fort taux de transfert et un grammage relativement faible, notamment inférieur ou égal à 50 g/m2.There is therefore a need, not met to date, for a means of obtaining a transfer paper for sublimation printing, printable by inkjet printing, having good printability with a limited drying time, a high transfer rate and a relatively low weight, in particular less than or equal to 50 g/m 2 .

L'invention est définie dans les revendications.The invention is defined in the claims.

Les agents cationiques sont usuellement utilisés en faibles proportions comme agents fixateur d'encre pour l'impression jet d'encre dans le but de retenir l'encre en surface et d'éviter le dégorgement de l'encre dans l'eau. La présence d'un agent cationique en une proportion plus élevée dans l'invention permet de manière surprenante d'assurer un bon transfert par sublimation, l'encre étant contre toute attente peu retenue dans le papier transfert lors de la sublimation.Cationic agents are usually used in small proportions as ink fixing agents for inkjet printing with the aim of retaining the ink on the surface and preventing bleeding of the ink into the water. The presence of a cationic agent in a higher proportion in the invention surprisingly makes it possible to ensure good transfer by sublimation, the ink being unexpectedly poorly retained in the transfer paper during sublimation.

Le papier transfert selon l'invention présente une bonne aptitude à l'impression, grâce notamment à l'immobilisation de l'encre en surface par le ou les agents cationiques.The transfer paper according to the invention has good printability, thanks in particular to the immobilization of the ink on the surface by the cationic agent(s).

L'immobilisation des pigments de l'encre en surface du substrat fibreux par le ou les agents cationiques améliore la densité optique après transfert et limite les bavures. La définition est ainsi améliorée.The immobilization of the ink pigments on the surface of the fibrous substrate by the cationic agent(s) improves the optical density after transfer and limits smudging. The definition is thus improved.

L'absence ou la faible présence de pigment et de liant et des autres agents de formulation éventuels tels que listés ci-dessus permet d'optimiser le compromis fixation de l'encre / vitesse de séchage de l'encre.The absence or low presence of pigment and binder and other possible formulation agents as listed above makes it possible to optimize the compromise of ink fixation / ink drying speed.

Le traitement de surface peut être monocouche ou multicouche.The surface treatment can be single-layer or multi-layer.

La quantité du ou des agents cationiques est avantageusement supérieure ou égale à 8%, voire à 9 ou 10 %, en poids sec, du poids sec total du ou des composés apportés par l'application de la ou des couches du traitement de surface, comme indiqué plus haut.The quantity of the cationic agent(s) is advantageously greater than or equal to 8%, or even 9 or 10%, by dry weight, of the total dry weight of the compound(s) provided by the application of the layer(s) of the surface treatment, as indicated above.

Le papier transfert peut être dépourvu, au moins sur la face comportant le ou les agents cationiques, de charge minérale, également appelée pigment, ou comprendre sur cette face une ou plusieurs charges minérales en une quantité inférieure ou égale à 10 g/m2.The transfer paper may be devoid, at least on the side comprising the cationic agent(s), of mineral filler, also called pigment, or comprise on this side one or more mineral fillers in a quantity less than or equal to 10 g/m 2 .

La ou les charges minérales sont choisies parmi le carbonate de calcium, le kaolin, le kaolin calciné, le talc, TiO2, les hydroxydes, notamment d'aluminium Al(OH)3 ou de magnésium, les sulfates, notamment BaSO4 ou CaS04, le silicate d'aluminium naturel ou synthétique, l'oxyde d'aluminium, et leurs mélanges. Les charges minérales contribuent à bloquer l'encre en surface. La présence du ou des agents cationiques tels que décrits dans la présente invention permet de s'affranchir de la présence de charges minérales, ou du moins de limiter leur quantité.The mineral filler(s) are chosen from calcium carbonate, kaolin, calcined kaolin, talc, TiO2, hydroxides, in particular of aluminum Al(OH)3 or magnesium, sulfates, in particular BaSO4 or CaS04, natural or synthetic aluminum silicate, aluminum oxide, and mixtures thereof. Mineral fillers help block the ink on the surface. The presence of the cationic agent(s) as described in the present invention makes it possible to overcome the presence of mineral fillers, or at least to limit their quantity.

Le papier transfert peut être dépourvu, au moins sur la face comportant le ou les agents cationiques, de liant ou comprendre sur cette face un ou plusieurs liants en une quantité inférieure ou égale à 8 g/m2.The transfer paper may be devoid, at least on the side comprising the cationic agent(s), of binder or comprise on this side one or more binders in a quantity less than or equal to 8 g/m 2 .

Le ou les liants sont choisis de préférence parmi les liants hydrosolubles tels que l'alcool polyvinylique, l'amidon, la gélatine, les protéines de soja ou la caséine, et leurs mélanges.The binder(s) are preferably chosen from water-soluble binders such as polyvinyl alcohol, starch, gelatin, soy proteins or casein, and mixtures thereof.

Le ou les agents cationiques peuvent être présents sur une unique face du papier transfert, destinée à recevoir l'impression.The cationic agent(s) may be present on a single side of the transfer paper, intended to receive the printing.

Le ou les agents cationiques peuvent être des agents cationiques organiques.The cationic agent(s) may be organic cationic agents.

Le ou les agents cationiques organiques peuvent être choisis parmi les polyamines épichlorhydrines, notamment parmi les polyépichlorhydrines diméthylamines, les polyéthylèneimine et les sels d'ammonium quaternaires organiques, de préférence parmi les sels d'ammonium quaternaires organiques, l'agent cationique organique étant notamment du chlorure de polydiallyldiméthylammonium, également appelé PolyDADMAC. Le ou les agents cationiques organiques peuvent être présent(s) sur ladite face en une quantité supérieure ou égale à 0,2 g/m2, notamment supérieure ou égale à 0,6 g/m2.The organic cationic agent(s) may be chosen from polyamine epichlorohydrins, in particular from polyepichlorohydrins dimethylamines, polyethyleneimines and organic quaternary ammonium salts, preferably from organic quaternary ammonium salts, the organic cationic agent being in particular polydiallyldimethylammonium chloride, also called PolyDADMAC. The organic cationic agent(s) may be present on said face in a quantity greater than or equal to 0.2 g/m 2 , in particular greater than or equal to 0.6 g/m 2 .

Ladite face peut également comporter un ou plusieurs sels alcalino-terreux, notamment choisi(s) parmi les sels de calcium, de préférence parmi le dichlorure de calcium et le nitrate de calcium, et les sels de magnésium, notamment parmi le sulfate de magnésium et le chlorure de magnésium, qui peuvent contribuer également à améliorer le transfert.Said face may also comprise one or more alkaline earth salts, in particular chosen from calcium salts, preferably from calcium dichloride and calcium nitrate, and magnesium salts, in particular from magnesium sulfate and magnesium chloride, which can also help improve transfer.

Le substrat fibreux avant traitement peut être dépourvu d'agent cationique et/ou de charge minérale et/ou de liant et/ou d'agents de formulation tels que dispersant, mouillant, épaississant, insolubilisant, agent de collage, azurant optique, ou colorant. Le substrat fibreux peut comporter des fibres naturelles et/ou synthétiques, notamment des fibres de cellulose, longues et/ou courtes.The fibrous substrate before treatment may be free of cationic agent and/or mineral filler and/or binder and/or formulation agents such as dispersant, wetting, thickener, insolubilizer, bonding agent, optical brightener, or dye. . The fibrous substrate may comprise natural and/or synthetic fibers, in particular long and/or short cellulose fibers.

Le papier transfert est de préférence imprimable par impression jet d'encre. Le papier transfert peut encore être imprimable par presse rotative.The transfer paper is preferably printable by inkjet printing. The transfer paper can still be printable by rotary press.

Le papier transfert a de préférence une perméabilité à l'air Bendtsen supérieure ou égale à 100 ml/min, notamment supérieure ou égale à 200 ml/min (selon la norme ISO 5636-3).The transfer paper preferably has a Bendtsen air permeability greater than or equal to 100 ml/min, in particular greater than or equal to 200 ml/min (according to standard ISO 5636-3).

Une telle perméabilité à l'air confère au papier une structure ouverte. Elle assure un séchage rapide de l'encre appliquée sur le papier transfert. Elle induit donc un gain de productivité par rapport à une perméabilité à l'air plus faible grâce à une augmentation de la vitesse de séchage de l'encre.Such air permeability gives the paper an open structure. It ensures rapid drying of the ink applied to the transfer paper. It therefore induces a gain in productivity compared to lower air permeability thanks to an increase in the drying speed of the ink.

Le papier transfert peut avoir un grammage compris entre 25 et 150 g/m2, notamment compris entre 30 et 75 g/m2, mieux inférieur ou égal à 50 g/m2.The transfer paper can have a weight of between 25 and 150 g/m 2 , in particular between 30 and 75 g/m 2 , preferably less than or equal to 50 g/m 2 .

Le papier transfert est en général à usage unique.Transfer paper is generally single-use.

Dans un exemple de réalisation, le ou les agents cationiques sont présent(s) sur ladite face en une quantité supérieure ou égale à 0,2 g/m2, le papier transfert étant dépourvu, sur ladite face, de pigment et de liant et d'agents de formulation tels que dispersant, mouillant, épaississant, insolubilisant, agent de collage, azurant optique ou colorant, ou le papier transfert comprenant sur cette face un ou plusieurs pigments, les pigments sont choisis parmi le carbonate de calcium, le kaolin, le kaolin calciné, le talc, TiO2, les hydroxydes, notamment d'aluminium Al(OH)3 ou de magnésium, les sulfates, notamment BaSO4 ou CaSO4, le silicate d'aluminium naturel ou synthétique, l'oxyde d'aluminium, et leurs mélanges, et/ou liants et/ou des agents de formulation tels que ci-dessus en une quantité individuelle, mieux totale, inférieure ou égale à 13 fois, en g/m2, la quantité d'agent(s) cationique(s), notamment inférieure ou égale à 12 fois, 10 fois, 8 fois ou 5 fois.In an exemplary embodiment, the cationic agent(s) are present on said face in a quantity greater than or equal to 0.2 g/m2, the transfer paper being devoid, on said face, of pigment and binder and formulation agents such as dispersing, wetting, thickening, insolubilizing, bonding agent, optical brightener or coloring agent, or transfer paper comprising on this side one or more pigments, the pigments are chosen from calcium carbonate, kaolin, calcined kaolin, talc, TiO2, hydroxides, in particular of aluminum Al(OH)3 or magnesium, sulfates, in particular BaSO4 or CaSO4, natural or synthetic aluminum silicate, aluminum oxide, and their mixtures, and/or binders and/or formulation agents such as above in an individual quantity, better total, less than or equal to 13 times, in g/m2, the quantity of cationic agent(s) , in particular less than or equal to 12 times, 10 times, 8 times or 5 times.

L'invention a également pour objet un procédé de fabrication d'un papier transfert pour impression par sublimation, notamment tel que défini précédemment, dans lequel on dépose par un traitement de surface sur au moins une face d'un substrat fibreux un ou plusieurs agents cationiques, la quantité du ou des agents cationiques étant supérieure ou égale à 8% , en poids sec, du poids sec total du ou des composés apportés par le traitement de surface sur le substrat fibreux, notamment supérieure ou égale à 9% ou 10%.The invention also relates to a process for manufacturing a transfer paper for sublimation printing, in particular as defined above, in which one or more agents are deposited by a surface treatment on at least one face of a fibrous substrate. cationic, the quantity of the cationic agent(s) being greater than or equal to 8%, by dry weight, of the total dry weight of the compound(s) provided by the surface treatment on the fibrous substrate, in particular greater than or equal to 9% or 10% .

L'invention porte également sur un procédé de fabrication d'un papier transfert pour impression par sublimation, notamment tel que défini précédemment, dans lequel on dépose par un traitement de surface sur au moins une face d'un substrat fibreux un ou plusieurs agents cationiques, la face du papier transfert traitée comprenant le ou les agents cationiques en une quantité supérieure ou égale à 0,2 g/m2, le papier transfert étant dépourvu sur cette face de pigment et de liant et d'agents de formulation tels que dispersant, mouillant, épaississant, insolubilisant, agent de collage, azurant optique, ou colorant, ou le papier transfert comportant sur cette face un ou plusieurs pigments, les pigments sont choisis parmi le carbonate de calcium, le kaolin, le kaolin calciné, le talc, TiO2, les hydroxydes, notamment d'aluminium Al(OH)3 ou de magnésium, les sulfates, notamment BaSO4 ou CaSO4, le silicate d'aluminium naturel ou synthétique, l'oxyde d'aluminium, et leurs mélanges, et/ou liants et/ou agents de formulation tels que ci-dessus en une quantité individuelle, mieux totale, inférieure ou égale à 13 fois, en g/m2, la quantité d'agent(s) cationique(s), notamment inférieure ou égale à 12 fois, 10 fois, 8 fois ou 5 fois.The invention also relates to a process for manufacturing a transfer paper for sublimation printing, in particular as defined above, in which one or more cationic agents are deposited by a surface treatment on at least one face of a fibrous substrate. , the side of the treated transfer paper comprising the cationic agent(s) in a quantity greater than or equal to 0.2 g/m2, the transfer paper being devoid on this side of pigment and binder and formulation agents such as dispersant, wetting, thickening, insolubilizing, bonding agent, optical brightener, or colorant, or transfer paper comprising one or more pigments on this side, the pigments are chosen from calcium carbonate, kaolin, calcined kaolin, talc, TiO2 , hydroxides, in particular of aluminum Al(OH)3 or magnesium, sulfates, in particular BaSO4 or CaSO4, natural or synthetic aluminum silicate, aluminum oxide, and their mixtures, and/or binders and /or formulation agents such as above in an individual quantity, better total, less than or equal to 13 times, in g/m2, the quantity of cationic agent(s), in particular less than or equal to 12 times , 10 times, 8 times or 5 times.

Le traitement de surface peut être monocouche ou multicouche.The surface treatment can be single-layer or multi-layer.

Le procédé selon l'invention peut comporter la fabrication du substrat fibreux.The method according to the invention may include the manufacture of the fibrous substrate.

Le traitement de surface peut être réalisé en ligne ou hors ligne.Surface treatment can be carried out online or offline.

Le ou les agents cationiques peuvent être déposés sur une unique face du substrat fibreux.The cationic agent(s) can be deposited on a single side of the fibrous substrate.

Une composition comportant le ou les agents cationiques peut être déposée sur ladite face du substrat fibreux par le traitement de surface, et la quantité de la composition déposée sur la face du substrat fibreux peut être comprise entre 0,2 et 15 g/m2 en poids sec, préférentiellement entre 0,5 et 8 g/m2.A composition comprising the cationic agent(s) can be deposited on said face of the fibrous substrate by the surface treatment, and the quantity of the composition deposited on the face of the fibrous substrate can be between 0.2 and 15 g/m 2 in dry weight, preferably between 0.5 and 8 g/m 2 .

Le traitement de surface peut être réalisé à l'aide d'une presse encolleuse, d'une presse à transfert de film ou d'un système de couchage, notamment de type rideau ou à lame, lame d'air, crayon ou encore par cylindre gravé.The surface treatment can be carried out using a gluing press, a film transfer press or a coating system, in particular of the curtain or blade type, air blade, pencil or even by engraved cylinder.

L'invention a également pour objet un papier transfert imprimé pour impression par sublimation, comportant un papier transfert tel que défini précédemment et au moins une impression sur la face du papier transfert comportant le ou les agents cationiques, notamment une impression jet d'encre d'au moins une encre sublimable.The invention also relates to a printed transfer paper for sublimation printing, comprising a transfer paper as defined above and at least one print on the face of the transfer paper comprising the cationic agent(s), in particular an inkjet print of 'at least one sublimable ink.

L'invention porte également sur un procédé d'impression d'un papier transfert pour impression par sublimation, dans lequel on imprime avec au moins une encre, notamment par impression jet d'encre, la face comportant le ou les agents cationiques d'un papier transfert tel que défini précédemment.The invention also relates to a method of printing a transfer paper for sublimation printing, in which the face comprising the cationic agent(s) of a transfer paper as defined previously.

En variante, l'impression peut être réalisée par presse rotative.Alternatively, printing can be carried out by rotary press.

L'impression peut se faire par exemple en quadrichromie avec des cartouches d'encre contenant des encres de couleurs primaires, notamment noir, cyan, jaune et magenta, et éventuellement des couleurs secondaires. L'encre est notamment formulée à partir de pigments sublimables en base aqueuse.Printing can be done for example in four-color process with ink cartridges containing primary color inks, in particular black, cyan, yellow and magenta, and possibly secondary colors. The ink is notably formulated from water-based sublimable pigments.

L'invention a encore pour objet un procédé de décoration d'un support, dans lequel on transfère par sublimation l'impression d'un papier transfert imprimé tel que décrit précédemment sur le support.The invention also relates to a process for decorating a support, in which the printing of a transfer paper printed as described above is transferred by sublimation to the support.

Le support peut être un métal, du verre, une surface plastique ou un tissu, notamment un tissu comportant du polyester, de préférence un tissu comportant majoritairement du polyester.The support can be a metal, glass, a plastic surface or a fabric, in particular a fabric comprising polyester, preferably a fabric comprising mainly polyester.

ExemplesExamples

Les compositions décrites dans le tableau ci-dessous sont chacune déposées à la barre de Meyer sur une face d'un substrat fibreux dont la composition et les caractéristiques sont décrites ci-après. Les substrats fibreux traités par les compositions forment des papiers transferts.The compositions described in the table below are each deposited with a Meyer bar on one side of a fibrous substrate whose composition and characteristics are described below. The fibrous substrates treated with the compositions form transfer papers.

Papier de base avant couchage

  • Composition fibreuse : 30% résineux + 70% fibres courtes en mélange
  • Grammage = 60 g/m2
  • Collage Cobb 60s = 15 g/m2
  • Porosité Bendtsen = 1500 ml/min
Formules de couchage : composition et dépose selon tableau ci-dessousBase paper before coating
  • Fibrous composition: 30% resinous + 70% short fiber mixture
  • Weight = 60 g/m 2
  • Cobb 60s bonding = 15 g/ m2
  • Bendtsen porosity = 1500 ml/min
Coating formulas: composition and application according to table below

Le test d'impression est réalisé sur le papier à l'aide d'une imprimante SAWGRASS SG400, et le transfert est réalisé sous presse à 200°C pendant une minute sur un tissu polyester.The printing test is carried out on the paper using a SAWGRASS SG400 printer, and the transfer is carried out under press at 200°C for one minute on a polyester fabric.

Une encre noire (SAWGRASS Sublijet noir) est déposée sur la face du substrat fibreux traitée par la composition. On obtient ainsi un aplat noir. Les papiers transferts traités par l'encre forment des papiers transferts imprimés.A black ink (SAWGRASS Sublijet black) is deposited on the face of the fibrous substrate treated by the composition. We thus obtain a solid black. Transfer papers treated with ink form printed transfer papers.

La densité optique après transfert sur le tissu polyester est mesurée à l'aide d'un spectrodensitomètre X-rite 500.The optical density after transfer to the polyester fabric is measured using an X-rite 500 spectrodensitometer.

Les parts sont exprimées en poids sec. Exemple 1 Exemple 2 Exemple 3 Exemple 4 Exemple 5 Carbonate de calcium (parts) 20 20 20+80 0 0 Silicate d'aluminium (parts) 80 80 0 0 0 Alcool polyvinylique (parts) 12 12 17 0 0 Agent cationique - type - Polydadmac Polydadmac Polydadmac PolyEpichlorhydrine diméthylamine Agent cationique - quantité (parts) 0 40 40 100 100 Dépose sèche (g/m2) 1,36 2,66 1,93 2,3 1,8 Poids sec agent cationique (g/m2) 0 0,7 0,51 2,3 1,8 Densité optique (aplat noir) 1,86 2,14 2,21 2,20 2,22 The parts are expressed in dry weight. Example 1 Example 2 Example 3 Example 4 Example 5 Calcium carbonate (shares) 20 20 20+80 0 0 Aluminum silicate (shares) 80 80 0 0 0 Polyvinyl alcohol (shares) 12 12 17 0 0 Cationic agent - type - Polydadmac Polydadmac Polydadmac PolyEpichlorohydrin dimethylamine Cationic agent - quantity (shares) 0 40 40 100 100 Dry installation (g/m 2 ) 1.36 2.66 1.93 2.3 1.8 Dry weight cationic agent (g/m 2 ) 0 0.7 0.51 2.3 1.8 Optical density (flat black) 1.86 2.14 2.21 2.20 2.22

Dans l'exemple 3, « 20+80 » indique que l'on utilise 20 parts de CaCO3 broyé et 80 parts de PCC (carbonate précipité)In example 3, “20+80” indicates that 20 parts of crushed CaCO 3 and 80 parts of PCC (precipitated carbonate) are used.

La perméabilité à l'air Bendtsen des exemples 2 à 5 est supérieure à 100 mL/min.The Bendtsen air permeability of Examples 2 to 5 is greater than 100 mL/min.

On constate que les papiers transferts imprimés selon l'invention des exemples 2, 3, 4 et 5, ont une densité optique supérieure au papier transfert imprimé selon l'exemple comparatif 1 qui n'est pas selon l'invention. It can be seen that the transfer papers printed according to the invention of examples 2, 3, 4 and 5 have an optical density greater than the transfer paper printed according to comparative example 1 which is not according to the invention.

Claims (13)

  1. Transfer paper for sublimation printing, having on at least one face at least 0.2 g/m2 of one or more cationic agents, the transfer paper being free on this face from pigment and binder and formulation agents such as dispersant, wetting agent, thickener, insolubiliser, bonding agent, optical brightener or dye, or the transfer paper comprising on this face one or more pigment(s), the pigments being selected from calcium carbonate, kaolin, calcinated kaolin, talc, TiO2, hydroxides, in particular aluminium Al(OH)3 or magnesium hydroxides, sulphates, in particular BaSO4 or CaSO4, natural or synthetic aluminium silicate, aluminium oxide, and mixtures thereof, and/or binder(s) and/or formulation agent(s) such as dispersant, wetting agent, thickener, insolubiliser, bonding agent, optical brightener or dye in an individual amount, or better still total amount, of less than or equal to 13 times, in g/m2, the amount of cationic agent(s), the transfer paper preferably comprising on said face one or more pigments, the pigments being selected from calcium carbonate, kaolin, calcinated kaolin, talc, TiO2, hydroxides, in particular aluminium Al(OH)3 or magnesium hydroxides, sulphates, in particular BaSO4 or CaSO4, natural or synthetic aluminium silicate, aluminium oxide, and mixtures thereof, and/or binder(s) and/or formulation agent(s) such as dispersant, wetting agent, thickener, insolubiliser, bonding agent, optical brightener or dye in a total amount less than or equal to 12 times, in g/m2, the amount of cationic agent(s), in particular less than or equal to 10 times, 8 times or 5 times.
  2. Transfer paper for sublimation printing, including a fibrous substrate, the transfer paper having on at least one face one or more cationic agents, deposited by a surface treatment on the fibrous substrate, the amount of the cationic agent(s) being greater than or equal to 8%, by dry weight, of the total dry weight of the compound(s) provided by the surface treatment on the fibrous substrate, the amount of the cationic agent(s) being preferably greater than or equal to 9%, by dry weight, of the total dry weight of the compound(s) provided by the surface treatment on the fibrous substrate, in particular greater than or equal to 10%, the cationic agent(s) being present on said face in an amount greater than or equal to 0.2 g/m2, the transfer paper being free on this face from pigment and binder and formulation agents such as dispersant, wetting agent, thickener, insolubiliser, bonding agent, optical brightener or dye, or the transfer paper comprising on this face one or more pigments, the pigments being selected from calcium carbonate, kaolin, calcinated kaolin, talc, TiO2, hydroxides, in particular aluminium Al(OH)3 or magnesium hydroxides, sulphates, in particular BaSO4 or CaSO4, natural or synthetic aluminium silicate, aluminium oxide, and mixtures thereof, and/or binders and/or formulation agents such as dispersant, wetting agent, thickener, insolubiliser, bonding agent, optical brightener or dye, in an individual amount, or better still total amount, less than or equal to 13 times, in g/m2, the amount of cationic agent(s).
  3. Transfer paper according to any one of claims 1 or 2, the transfer paper being free, at least on the face including the cationic agent(s), of binder, or comprising on this face one or more binder(s) in an amount less than or equal to 8 g/m2.
  4. Transfer paper according to any one of claims 1 to 3, the transfer paper being able to be printed by inkjet printing.
  5. Transfer paper according to any one of the preceding claims, the cationic agent(s) being organic cationic agents, the organic cationic agent(s) being preferably selected from polyamine epichlorohydrins, in particular from polyepichlorohydrin-dimethylamines, polyethyleneimines and organic quaternary ammonium salts, preferably from organic quaternary ammonium salts, the organic cationic agent being in particular polydiallyldimethylammonium chloride and/or the organic cationic agent(s) being preferably present on said face in an amount greater than or equal to 0.2 g/m2, in particular greater than or equal to 0.6 g/m2.
  6. Transfer paper according to any one of the preceding claims, having a Bendtsen air permeability of greater than or equal to 100 ml/min and/or having a grammage preferably of between 25 and 150 g/m2, in particular between 30 and 75 g/m2, better still less than or equal to 50 g/m2.
  7. Method for manufacturing a transfer paper for sublimation printing, in particular according to any one of claims 1 to 6, wherein one or more cationic agents are deposited by a surface treatment on at least one face of a fibrous substrate, the treated face of the transfer paper comprising the cationic agent(s) in an amount greater than or equal to 0.2 g/m2, the transfer paper being free, on this face, from pigment and binder and formulation agents such as dispersant, wetting agent, thickener, insolubiliser, bonding agent, optical brightener or dye, or the transfer paper comprising on this face one or more pigments, the pigments being selected from calcium carbonate, kaolin, calcinated kaolin, talc, TiO2, hydroxides, in particular aluminium Al(OH)3 or magnesium hydroxides, sulphates, in particular BaSO4 or CaSO4, natural or synthetic aluminium silicate, aluminium oxide, and mixtures thereof, and/or binders and/or formulation agents such as dispersant, wetting agent, thickener, insolubiliser, bonding agent, optical brightener or dye, in an individual amount, or better still a total amount, less than or equal to 13 times, in g/m2, the amount of cationic agent(s).
  8. Method for manufacturing a transfer paper for sublimation printing according to claim 7, wherein one or more cationic agents are deposited by a surface treatment on at least one face of a fibrous substrate, the amount of the cationic agent(s) being greater than or equal to 8% by dry weight, of the total dry weight of the compound(s) provided by the surface treatment on the fibrous substrate.
  9. Method for manufacturing a transfer paper according to any one of claims 7 and 8, wherein the fibrous substrate is manufactured and the surface treatment is carried out online or offline.
  10. Method for manufacturing a transfer paper according to any one of claims 1 to 6, wherein a composition including the cationic agent(s) is deposited by the surface treatment on said face of the fibrous substrate, the amount of the composition deposited on the face of the fibrous substrate being preferably comprised between 0.2 and 15 g/m2 by dry weight, preferably between 0.5 and 8 g/m2 and/or the surface treatment being preferably carried out using a size press, a film transfer press or a coating system, in particular a blade coating, air-knife coating, rod coating or curtain coating, or by engraved cylinder.
  11. Printed transfer paper for sublimation printing, including a transfer paper according to any one of claims 1 to 6 and at least one print on the face of the transfer paper including the cationic agent(s).
  12. Method for printing a transfer paper for sublimation printing, wherein the face including the cationic agent(s) of a transfer paper according to any one of claims 1 to 6 is printed with at least one ink, in particular by inkjet printing.
  13. Method for decorating a support, wherein the print of a printed transfer paper according to claim 12 is transferred onto the support by sublimation.
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CN102277781B (en) * 2011-08-04 2013-04-17 滁州云林数码影像耗材有限公司 Transferring paper applied to sublimation type ink jetting, printing and transferring
CN103171351B (en) * 2013-03-18 2015-04-15 浙江佳维康特种纸有限公司 Preparation method of high-fidelity heat sublimation transfer paper base function material
WO2015116095A1 (en) * 2014-01-30 2015-08-06 Hewlett-Packard Development Company, L.P. Print media for inkjet printing
FR3023505A1 (en) 2014-07-11 2016-01-15 Papeteries Du Leman TRANSFER PAPER WITH A BARRIER LAYER AND METHOD OF MANUFACTURING THE SAME
DE102014116550A1 (en) 2014-11-12 2016-05-12 Papierfabrik August Koehler Se Thermosublimationspapier

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US20190366751A1 (en) 2019-12-05
BR112019013965B1 (en) 2023-11-28
EP3568521B1 (en) 2020-12-23
BR112019013965A2 (en) 2020-03-03
CN110168164A (en) 2019-08-23
MX2019008327A (en) 2019-09-16
FR3061725B1 (en) 2021-05-07
WO2018130565A1 (en) 2018-07-19
EP3568521A1 (en) 2019-11-20
CO2019007378A2 (en) 2019-07-31
US10773539B2 (en) 2020-09-15
CR20190328A (en) 2019-09-27
PE20191583A1 (en) 2019-11-04

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