EP4053333B1 - Matière de transfert pour l'impression par sublimation à base de papier comme support à fonction de non réception aux encres - Google Patents

Matière de transfert pour l'impression par sublimation à base de papier comme support à fonction de non réception aux encres Download PDF

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Publication number
EP4053333B1
EP4053333B1 EP21160232.1A EP21160232A EP4053333B1 EP 4053333 B1 EP4053333 B1 EP 4053333B1 EP 21160232 A EP21160232 A EP 21160232A EP 4053333 B1 EP4053333 B1 EP 4053333B1
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EP
European Patent Office
Prior art keywords
transfer material
paper
base paper
ink
material according
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
EP21160232.1A
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German (de)
English (en)
Other versions
EP4053333C0 (fr
EP4053333B8 (fr
EP4053333A1 (fr
Inventor
Martina Wicher
Michael Jocher
Knut Hornig
Sebastian Scholz
Martin Goeppert
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.)
Felex Schoeller Jr and GmbH and Co KG
Original Assignee
Schoeller Technocell GmbH and Co KG
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
Priority to EP21160232.1A priority Critical patent/EP4053333B8/fr
Application filed by Schoeller Technocell GmbH and Co KG filed Critical Schoeller Technocell GmbH and Co KG
Priority to PCT/EP2022/055268 priority patent/WO2022184768A1/fr
Priority to BR112023017733A priority patent/BR112023017733A2/pt
Priority to KR1020237026443A priority patent/KR102657470B1/ko
Priority to CN202280018625.3A priority patent/CN116897234A/zh
Priority to JP2023547353A priority patent/JP7449457B2/ja
Publication of EP4053333A1 publication Critical patent/EP4053333A1/fr
Application granted granted Critical
Publication of EP4053333C0 publication Critical patent/EP4053333C0/fr
Publication of EP4053333B1 publication Critical patent/EP4053333B1/fr
Publication of EP4053333B8 publication Critical patent/EP4053333B8/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
    • 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
    • B41M5/0256—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet the transferable ink pattern being obtained by means of a computer driven printer, e.g. an ink jet or laser printer, or by electrographic means
    • 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
    • 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
    • D21H17/35—Polyalkenes, e.g. polystyrene
    • 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
    • D21H17/53—Polyethers; Polyesters
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/38—Coatings with pigments characterised by the pigments
    • D21H19/385—Oxides, hydroxides or carbonates
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/38—Coatings with pigments characterised by the pigments
    • D21H19/40—Coatings with pigments characterised by the pigments siliceous, e.g. clays
    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes

Definitions

  • the invention relates to a transfer material for the dye sublimation process and a process for its production.
  • the invention further relates to a method for transferring an inkjet printed image from the transfer paper according to the invention to a receiving material.
  • transfer printing processes are available, in which a flexible sheet-shaped transfer material is first printed and the printed image is transferred from this to the object to be printed.
  • a special embodiment of such a transfer printing process is the dye sublimation process, which is described, for example, in B. Thompson: Printing Materials - Science and Technology (1998) on page 468.
  • the image to be printed is applied to the transfer material using printing inks which, after the print has dried, are evaporated under the influence of heat and are image-wise deposited again from the gas phase on the material to be finally printed.
  • the sublimation colors can advantageously be applied to the transfer material using digital printing, in particular the inkjet printing process, which enables individual and personalized prints, for example on textiles.
  • Printing inks for the inkjet printing process with dyes that can be transferred to the final print medium by sublimation are, for example, in the DE 102 46 209 A1 described.
  • Common transfer materials onto which the printed image to be transferred is printed using inkjet printing technology include a carrier, for example a base paper, which is coated with an ink-receiving layer.
  • a transfer material suitable for the dye sublimation process should, on the one hand, enable good absorption of the ink liquid when printing with the image to be transferred, otherwise the print sharpness will suffer, and on the other hand, the loss of sublimable dye should be as small as possible when the printed image is transferred to the image to be printed material occur.
  • a loss of sublimable dye through penetration into the paper interior of the carrier and onto the surfaces of the transfer presses, so-called ink strikethrough should be completely prevented when the printed image is transferred from the transfer material to the material to be printed.
  • the transfer materials used on the market for sublimation printing can basically be divided into two groups.
  • On the one hand there is the group of transfer materials in which film-forming binders are used in the ink-receiving layer and which already have a certain barrier function against the penetration of inks due to the film-forming binders.
  • microporous ink-receiving layers are used, which predominantly use non-film-forming binders in the ink-receiving layer.
  • ink bleed-through is solved by applying at least one barrier layer to the back of the carrier or between the carrier and the ink-receiving layer.
  • Another problem in use is the significant deterioration in curl properties (undesirable rolling up of the paper) by applying a barrier layer.
  • EP 1 101 682 A1 describes a coated paper that has low air permeability on the side to be printed. This is intended to prevent part of the sublimable dyes from penetrating the porous paper interior of the carrier during the sublimation transfer step and thus being lost for transfer to the material to be finally printed.
  • such papers with a low porosity on the side to be printed absorb the inkjet ink liquid very slowly and lead, especially at high levels Printing speeds, slow drying and the ink running on the surface and thus unsatisfactory print sharpness.
  • the EP 1 878 829 A1 describes that the use of synthetic polymers such as polyethylene (PE), polyester (PES), polyacrylates and other synthetic thermoplastic polymers as an additional coating on the backing paper leads to a deterioration in the quality properties of the print image transferred to the material to be printed using the dye sublimation process because these polymers have a disadvantageously high color retention capacity and thus lead to a lower transfer rate of the dye.
  • synthetic polymers such as polyethylene (PE), polyester (PES), polyacrylates and other synthetic thermoplastic polymers
  • ink-receiving layer with a small amount of binder and inorganic fillers, which is characterized by good ink absorption and print quality.
  • barrier layers are described on the back of the transfer material or between the backing paper and the dye-receiving layer.
  • the curling properties of the backing paper increase, which is problematic in further processing.
  • a barrier layer applied to the back can lead to the back being sticky and therefore undesirable Adhesion of the transfer material to the surfaces of the transfer presses when used in the dye sublimation process.
  • thermoplastic particles with a melting point of 35 ° C to 150 ° C and an average particle size of 0.3 to 5 ⁇ m in the ink-receiving layer.
  • the thermoplastic particles are intended to optimize the adhesion of the printed ink-receiving layer to the front of the thermal transfer material when transferring the printed image to flat textiles using the dye sublimation process.
  • the color receiving layer of the DE 10 2014 116550 A1 has a binder content of 55 to 80% dry and can also contain pigments.
  • thermoplastic particles Due to the high amount of thermoplastic particles in the ink-receiving layer, the print quality (line sharpness) and the transfer quality (optical densities on textile) of the transfer material can be severely impaired. With this approach it is also not possible to control textile adhesion independently of the print and transfer quality.
  • the invention is based on the object of providing a transfer material for the dye sublimation process which allows little or no penetration of sublimable dyes through the carrier of the transfer material in which the known problems of the prior art transfer materials do not occur.
  • a transfer material for the dye sublimation process comprising a carrier paper which is coated on one side with a dye-receiving layer, the carrier paper containing at least 1.5% by weight, based on the dry weight of the pulp, of a polymer dispersion selected from the Group consisting of polyacrylates, polyesters, polyolefins or mixtures thereof.
  • the introduction of at least the specified amount of specific polymer dispersions and mixtures thereof into the backing paper of the transfer material according to the invention leads to a significant improvement and even prevention of the breakthrough of sublimable dyes when used in the dye sublimation process.
  • the polymer dispersion in the carrier paper of the transfer material according to the invention appears to form a barrier to the sublimable dye inks without the need for complete closure of the carrier paper by means of an additional barrier layer.
  • the barrier effect appears to be based on sorption processes between the sublimable dyes and the specific polymers.
  • the transfer material according to the invention has the disadvantages associated with the application of this barrier layer, such as stickiness, impaired curl properties and insufficient porosity of the ink-receiving layer and, associated with this, slow drying and bleeding Ink on the surface and unsatisfactory print sharpness, not on.
  • the transfer material according to the invention comprises a backing paper.
  • the backing paper is preferably an uncoated or surface-sized paper.
  • the backing paper can contain sizing agents such as Alkyl kentenedimers, fatty acids and/or fatty acid salts, epoxidized fatty acid amides, alkenyl or alkyl succinic anhydride, starch, tree resins, wet strength agents such as polyamine-polyamide-epichlorohydrin, dry strength agents such as anionic, cationic or amphoteric polyamides, optical brighteners, pigments, dyes, defoamers and others in the paper industry contain known chemical additives.
  • sizing agents such as Alkyl kentenedimers, fatty acids and/or fatty acid salts, epoxidized fatty acid amides, alkenyl or alkyl succinic anhydride, starch, tree resins, wet strength agents such as polyamine-polyamide-epichlorohydrin, dry strength agents such as anionic, cationic or amphoter
  • sizing agents with an added amount of 0.2% or less, wet strength agents with an added amount of 0.5% or less and dry strength agents with an added amount of 1.0% or less are used.
  • the amounts added are dosed as low as possible in order to avoid costs and unnecessary and uncontrolled multiple circulation of the agents in the material cycle.
  • the backing paper can be surface-sized. Suitable sizing agents for this are, for example, polyvinyl alcohol or starch dextrins or modified starches such as oxidized starches or starch ethers.
  • the backing paper can be produced on a fourdrinier machine with or without a top wire.
  • the basis weight of the backing paper can be 30 to 200 g/m 2 , in particular 40 to 120 g/m 2 .
  • the backing paper can be used in uncompacted or compressed form (smoothed).
  • Backing papers with a density of 0.6 to 1.05 g/cm 3 , particularly 0.70 to 0.9 g/cm 3 are particularly suitable.
  • the smoothing can be done in the usual way with calendering.
  • the pulp for producing the backing paper is preferably a eucalyptus pulp with a fiber content of less than 200 ⁇ m after grinding of 10 to 35% by weight and an average fiber length of 0.5 to 0.75 mm. It has been shown that the use of a pulp with a limited proportion of fibers smaller than 200 ⁇ m reduces the loss of stiffness that occurs when using filler.
  • Hardwood pulp (NBHK - Northern Bleached Hardwood Kraft Pulp) and softwood pulp can also be used.
  • the backing paper contains at least 1.5% by weight, based on the mass of the pulp, of a polymer dispersion selected from the group consisting of polyacrylates, polyesters, polyolefins or mixtures thereof. (hereinafter also polymer dispersion according to the invention).
  • the use of at least 1.5% by weight of the polymer dispersion according to the invention surprisingly leads to a significant improvement in the barrier properties of the transfer material without the need for an additional barrier layer, as in the prior art.
  • the amounts used of the polymer dispersion according to the invention are significantly above the amounts used for conventional polymer dispersions used in the production of a backing paper, such as sizing agents, wet strength agents or dry strength agents.
  • the polyacrylates used according to the invention are, for example, styrene-alkyl acrylate copolymer or methyl methacrylate.
  • the alkyl in the styrene-alkyl acrylate copolymer preferably has the meaning methyl, ethyl, propyl, butyl and/or hexyl.
  • the alkyl in the styrene-alkyl acrylate copolymer is ethyl or butyl.
  • Copolymers can be used as mixtures of the aforementioned alkyl groups in the alkyl acrylate portion of the styrene-alkyl acrylate copolymer.
  • polyesters used according to the invention are preferably selected from the group consisting of polybutylene terephthalate, polyethylene terephthalate, polylactide, polytrimethylene terephthalate, polyethylene naphthalate, polycarbonate, polyester carbonate.
  • Polyethylene, polybutylene, polymethylpentene and polyisobutylene, for example, can be used as polyolefins.
  • the backing paper contains at least 2% by weight, in particular at least 2.5% by weight, preferably at least 3% by weight, based on the mass of the pulp, of a polymer dispersion according to the invention. It has been found that such a transfer material has a further improved barrier effect, so that there is a further significant reduction in ink bleed-through with such a transfer material. It has proven to be particularly practical if the polymer dispersion is evenly distributed within the thickness of the backing paper. This ensures a particularly high level of consistent barrier effect over the entire surface of the carrier material.
  • portions of other natural or synthetic fibers can also be used to produce the backing paper.
  • the proportion of other fibers in the total fiber mass is preferably less than 40% by weight; proportions of other fibers are particularly preferred below 20% by weight.
  • the backing paper contains at least 5% by weight, in particular between 5 and 20% by weight, most preferably between 8 and 15% by weight.
  • synthetic fibers in particular polyethylene fibers or polyethylene terephthalate fibers.
  • the synthetic fibers preferably have a length of between 2 and 6 mm, preferably between 4 and 6 mm.
  • the diameter of the synthetic fibers can be between 30 and 110 ⁇ m, preferably between 50 and 100 ⁇ m.
  • the barrier effect of the transfer material according to the invention can be further enhanced by the additional use of synthetic fibers in the backing paper.
  • the ink penetration of the transfer material according to the invention is below 30%, preferably below 20%, particularly preferably below 15%.
  • ink bleed-through of up to 30% is acceptable, but leads to a loss of sublimable dye.
  • a transfer material with an ink penetration of less than 20% or less results in significantly less dye loss and is therefore more efficient overall.
  • the backing paper may contain fillers and pigments.
  • Fillers and pigments for the production of the backing paper can be, for example, kaolins, calcium carbonate in its natural form such as limestone, marble or dolomite stone, precipitated calcium carbonate, calcium sulfate, barium sulfate, titanium dioxide, talc, silica, aluminum oxide, aluminum and magnesium silicates or silicas and mixtures thereof Raw paper can be used.
  • the backing paper according to the invention contains at least 5% by weight, based on the mass of the pulp, of one or more pigments.
  • hydrophobic pigments in particular those selected from the group consisting of kaolin, calcium carbonate, aluminum and magnesium silicates or silicas and mixtures thereof, has proven to be particularly practical. It has been found that the use of such hydrophobic pigments in the backing paper according to the invention further improves the barrier effect for sublimable dyes. Without wishing to be bound to scientific theories, this also appears to be based on interactions or sorption processes between the sublimable dyes and the hydrophobic pigments, which significantly reduce the migration speed of the sublimable dyes. This interaction can be further strengthened by using hydrophobic pigments with a high specific surface area.
  • the hydrophobic pigment therefore preferably has a specific surface area of greater than 80 m 2 /g.
  • the backing paper of the transfer material according to the invention is coated on one side with an ink-receiving layer.
  • the ink-receiving layer is arranged on the side of the backing paper to be printed.
  • the ink-receiving layer can be a porous or microporous layer.
  • a porous ink-receiving layer in the sense of the invention contains before printing. connected air-filled cavities (pores). These pores can Ink liquid is absorbed very quickly by capillary forces and this leads to the printed image drying quickly.
  • such porous ink-receiving layers contain a high proportion of pigment particles and comparatively only small proportions of (film-forming) binder.
  • Porous ink-receiving layers have a high air permeability, which can be determined using the Bendtsen method. Their pore volume can be detected and determined, for example, by liquid absorption measurements or by mercury porositometry.
  • the porous ink-receiving layer thus contains inorganic pigment and binder.
  • Pigments with an anionic, neutral or only weakly cationic surface such as silica, calcium carbonate, kaolin, talc, bentonite, aluminum oxides or aluminum oxide hydrates are particularly preferred.
  • finely divided polymeric compounds can also be included, with high-melting thermoplastic or thermoset polymers being preferred.
  • the ink-receiving layer can also contain a mixture of two or more pigments.
  • the pigments preferably have an average particle size of 100 nm to 30 ⁇ m, particularly preferably 200 nm to 10 ⁇ m.
  • the ink-receiving layer preferably additionally contains a polymeric binder, preferably a hydrophilic polymeric binder.
  • the binder may be a water-soluble or water-dispersed binder.
  • Preferred binders are styrene copolymers, polyvinyl alcohol, starch, modified starch, polyvinyl acetate, acrylates or polyurethane dispersions.
  • the mass ratio of pigment to binder is 100:1 to 100:50, preferably 100:40 to 100:2.
  • the application weight of the ink-receiving layer is preferably 1 g/m 2 to 50 g/m 2 , particularly preferably 3 g/m 2 to 30 g/m 2 .
  • the air permeability of the Color receiving layer is preferably greater than 100 ml/min, particularly preferably 200 ml/min to 500 ml/min.
  • the ink-receiving layer is preferably applied to the paper carrier by applying aqueous coating slip, whereby all application methods common in the paper industry can be used. Application using a blade, squeegee, film press or curtain coating is preferred. A multi-layer curtain coating process is particularly preferred:
  • the coating slips can contain other common additives such as wetting agents, thickeners, rheology aids, dyes and optical brighteners.
  • One or more further layers can be arranged between the backing paper and the ink-receiving layer in the transfer material according to the invention. These are preferably layers containing a hydrophilic binder.
  • the method according to the invention is characterized in comparison to the methods known in the prior art for producing transfer materials for the dye sublimation process in that the step of additionally applying a barrier layer between the ink-receiving layer and the backing paper or on the back (which is not with a Ink receiving layer coated side) of the backing paper is omitted since the barrier effect is created by the addition of the polymer dispersion during the production of the backing paper. This saves process steps and raw materials in the production of the transfer material.
  • the method according to the invention is therefore significantly more efficient than the procedures known from the prior art.
  • the method comprises the following additional step (a1) between step (a) and step (b): (a1) Impregnation of the backing paper with an impregnation solution which comprises at least 1.0 g/m 2 of a polymer dispersion selected from the group consisting of polyacrylates, polyesters, polyolefins or mixtures thereof, in a size or film press.
  • an impregnation solution which comprises at least 1.0 g/m 2 of a polymer dispersion selected from the group consisting of polyacrylates, polyesters, polyolefins or mixtures thereof, in a size or film press.
  • the impregnation solution can comprise the same polymer dispersion that was already added to the pulp suspension to produce the backing paper in step (a). Additional impregnation of the backing paper leads to a further reduction in ink bleed through without any loss of productivity in the wet section of the paper machine.
  • the use of large amounts of polymer dispersion in the wet part of the paper machine is usually avoided, as this leads to disruptions in the sensitive balance of the white water cycle in terms of charge and colloidal interactions of the particles, which has a negative impact on the productivity of the manufacturing process.
  • the backing paper is impregnated in step (a1) with an impregnation solution which has at least 1.5 g/m 2 , preferably at least 2.0 g/m 2 , particularly preferably at least 2.5 g/m 2 , very particularly preferably comprises at least 3.0 g/m 2 of the polymer dispersion according to the invention.
  • the impregnation solution used in step (a1) can contain the additives commonly used in paper production and described above in connection with the production of the backing paper, such as sizing agents, wet strength agents, dry strength agents, optical brighteners, fillers, pigments, dyes, defoamers and others contain chemical additives known in the paper industry.
  • the present invention also relates to a method for transferring an image to a receiving material by sublimation, wherein a transfer material according to the invention is printed with an image using the ink-jet printing process and the image is transferred to a receiving material by sublimation.
  • the receiving material is selected from polyester fabric, polyester fleece or a polyester-coated material.
  • Fig. 1 shows schematically a cross section through a transfer material according to the invention.
  • 1 denotes a paper carrier.
  • the backing paper contains the polymer dispersion according to the invention.
  • the backing paper is coated on one side with an ink-receiving layer 2 for inkjet printing.
  • Eucalyptus pulp was used to produce the backing paper.
  • the pulp was ground as an approximately 5% aqueous suspension (thick matter) using refiners to a grinding degree of 25 °SR.
  • the concentration of the pulp fibers in the thin material was approximately 1% by weight, based on the mass of the pulp suspension.
  • a neutral sizing agent alkyl ketene dimer (AKD) in an amount of 0.15% by weight
  • wet strength agent polyamine-polyamide-epichlorohydrin resin (Kymene ® ) in an amount of 0.60% by weight
  • starch C-Bond HR 35845
  • a natural ground CaCOa in an amount of 30% by weight.
  • the quantities refer to the pulp mass.
  • the thin stock whose pH was adjusted to about 7.5, was transferred from the headbox to the wire of the paper machine, whereupon sheet formation took place with dewatering of the web in the wire section of the paper machine.
  • the paper web was further dewatered to a water content of 60% by weight, based on the web weight. Further drying took place in the drying section of the paper machine with heated drying cylinders. The result was a base paper with a basis weight of 63 g/m 2 , a filler content of 18% by weight and a moisture content of approximately 5.5%.
  • a diluted dispersion of precipitated calcium carbonate (Precarb ® 800 from Schaefer Kalk) with a solids content of 48% by weight
  • 557g of an aqueous 9.5% by weight solution of a partially saponified polyvinyl alcohol (Mowiol ® 18-88 from the company Kuraray) was added and the mixture was mixed with a dissolver stirrer.
  • 0.5 g of surfactant Surfynol ® 440 from Air Products is added.
  • the coating slip obtained has a solids content of 26.6% by weight, a viscosity of 150 mPas, a pH of 7.5 and a surface tension of 36 mN/m.
  • the resulting surface-sized, dried and smoothed backing paper is coated on one side with the coating material for the color-receiving layer.
  • the transfer materials listed in the following table were produced according to the process described above.
  • the barrier component mentioned in the first column of Table 1 was used in exchange for eucalyptus pulp.
  • the first comparative example corresponds to the one produced.
  • the comparative example which is referred to in the first column of the table as "without barrier component with an additional barrier layer", was produced according to the above-mentioned process, but here no barrier component was added to the backing paper during its production and the backing paper was additionally added to the side opposite the ink-receiving layer provided with a barrier layer made of a thermoplastic polymer, such as a fully saponified polyvinyl alcohol (eg Mowiol ® 28-99).
  • a barrier layer made of a thermoplastic polymer, such as a fully saponified polyvinyl alcohol (eg Mowiol ® 28-99).
  • the resulting transfer materials were printed with a color image using the EPSON Workforce Pro WF 5110 inkjet printer with SubliJet IQ sublimation color inks from Sawgrass.
  • the sublimation transfer paper to be tested is stored in DIN A 4 format for at least 1 hour in the printing room at a standard climate of 23°C and 50% humidity.
  • Printing is done on standard sublimation desktop printers.
  • the print file contains 10 round color fields with different sloping amounts of ink to be printed in black.
  • the print field at the top left is printed with 100% ink and the following areas are printed with 10% less ink.
  • Below the print fields is the name of the field in % and is stated as 100% - amount of ink applied in %. For example, the ink field that is printed with 80% ink is labeled 20%.
  • the following image shows the print file.
  • the paper After printing, the paper is left to dry in a standard climate for 1 hour.
  • the sublimation process then takes place in the Sefa ROTEX AUTO X REL transfer press with a height indicator.
  • the open transfer press is heated to 200°C.
  • the textile Once the temperature has been reached, the textile is first placed on the floor heating plate and the printed paper is placed on top with the printed side towards the textile.
  • the so-called cover paper which is an 80 g/m 2 copy paper made from bleached cellulose, is placed on the back of the printed sublimation paper and the transfer press is closed.
  • the sublimation time is 30 seconds with medium contact pressure.
  • the transfer press is opened and the 3 layers are carefully separated from each other.
  • the textile is discarded. If there is poor ink penetration, the sublimation ink sublimates to the back and, depending on the intensity of the ink penetration, is deposited more or less on the copy paper.
  • the amount of ink plays an important role. The higher the amount of ink on the printed sublimation paper, the higher the tendency for ink to bleed through towards the back or cover page.
  • the gradation of the ink transfer is on the cover sheet equally visible.
  • a visual inspection of the cover sheet is carried out. The color field that is just visible in daylight is marked and given as a % value for ink bleed through.
  • Sublimation paper with poor ink penetration results in values of 70-90%. Values of 60-40% are obtained on papers with improved ink penetration. Papers with very good resistance to ink bleed-through receive values of 30-0%. An exact scaling of the tendency to ink bleed through can be specified in % values.
  • Figure 2 shows an example of the cover sheet, with the gray haze that is just visually visible at 80%, which corresponds to a poor value in terms of ink penetration. With a paper that has a very good barrier effect against sublimation ink, nothing can be seen on the cover sheet (Figure 3).
  • the prepared samples are labeled on the customer side (FS, M, AS) and stored with the customer side up on a smooth surface for 30 minutes at 50 ⁇ 2% relative humidity and 23 ⁇ 1 °C.
  • What is measured is the distance from the point at which the corner point was before the start of the determination, ie before storage at the above-mentioned conditions (temperature, relative humidity) for 30 minutes, to the part of the DINA4 sample that is after 30 minutes under the above-mentioned given conditions (temperature, relative humidity) starting from the original point of the corner point diagonally to the center of the DINA4 pattern (intersection in the middle of the DINA4 pattern, which is formed when you draw mental straight lines from each corner point diagonally to the next corner point) just barely lies flat on the smooth surface, ie the part of the DINA4 pattern that still lies on the smooth surface after the corner of the pattern has been rolled up.

Claims (13)

  1. Matériau de transfert pour le procédé de sublimation par colorant, comprenant un papier support revêtu d'un seul côté d'une couche de réception de couleur, caractérisé en ce que le papier support contient au moins 1,5 % en poids, par rapport à la masse de la pâte de cellulose, d'une dispersion de polymères choisie parmi polyacrylates, polyesters, polyoléfines ou leurs mélanges.
  2. Matériau de transfert selon la revendication 1, caractérisé en ce que le papier support contient au moins 3 % en poids, par rapport à la masse de la pâte de cellulose, d'une dispersion de polymères.
  3. Matériau de transfert selon l'une des revendications précédentes, caractérisé en ce que la pénétration de l'encre du matériau de transfert est inférieure à 30 %, de préférence inférieure à 20 %.
  4. Matériau de transfert selon l'une des revendications précédentes, caractérisé en ce que le papier support contient en outre au moins 5 % en poids, par rapport à la masse de la pâte de cellulose, de pigment.
  5. Matériau de transfert selon la revendication 4, caractérisé en ce que le pigment est un pigment hydrophobe.
  6. Matériau de transfert selon la revendication 5, caractérisé en ce que le pigment hydrophobe est choisi dans le groupe constitué de kaolin, carbonate de calcium, silicates d'aluminium et de magnésium, silices ou leurs mélanges.
  7. Matériau de transfert selon la revendication 5 ou 6, caractérisé en ce que le pigment hydrophobe présente une surface spécifique supérieure à 80 m2/g.
  8. Matériau de transfert selon l'une des revendications précédentes, caractérisé en ce que le papier support contient en outre au moins 5 % en poids, par rapport à la masse de la pâte de cellulose, de fibres synthétiques.
  9. Matériau de transfert selon l'une des revendications précédentes, caractérisé en ce que la dispersion de polymères est répartie uniformément dans l'épaisseur du papier support.
  10. Procédé de fabrication d'un matériau de transfert selon la revendication 1, comprenant les étapes suivantes :
    (a) fabrication d'un papier support sur une machine à papier, dans laquelle au moins 1,5 % en poids, par rapport à la masse de la pâte de cellulose, d'une dispersion de polymères choisie dans le groupe constitué de polyacrylates, polyesters, polyoléfines ou leurs mélanges, est ajouté à la suspension de pâte de cellulose pendant la fabrication du papier support ;
    (b) séchage et lissage du papier support ;
    (c) application de la couche de réception de couleur sur une surface du papier support ; et
    (d) séchage du matériau de transfert obtenu à l'étape (c).
  11. Procédé selon la revendication 10, caractérisé en ce que le procédé comprend, entre l'étape (a) et l'étape (b), l'étape supplémentaire (a1) suivante :
    (a1) imprégnation du papier support d'une solution d'imprégnation qui comprend au moins 1,0 g/m2 d'une dispersion de polymères choisie dans le groupe constitué de polyacrylates, polyesters, polyoléfines ou leurs mélanges, dans une presse encolleuse ou pelliculeuse.
  12. Procédé permettant le transfert d'une image par sublimation sur un matériau de réception, caractérisé en ce qu'un matériau de transfert selon l'une des revendications 1 à 9 est imprimé avec une image par le procédé d'impression par jet d'encre et l'image est transférée par sublimation sur un matériau de réception.
  13. Procédé selon la revendication 12, caractérisé en ce que le matériau de réception est choisi parmi tissu de polyester, non-tissé de polyester ou matériau revêtu de polyester.
EP21160232.1A 2021-03-02 2021-03-02 Matière de transfert pour l'impression par sublimation à base de papier comme support à fonction de non réception aux encres Active EP4053333B8 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP21160232.1A EP4053333B8 (fr) 2021-03-02 2021-03-02 Matière de transfert pour l'impression par sublimation à base de papier comme support à fonction de non réception aux encres
BR112023017733A BR112023017733A2 (pt) 2021-03-02 2022-03-02 Material de transferência para impressão por sublimação com base em papel como suporte com função de barreira contra tintas
KR1020237026443A KR102657470B1 (ko) 2021-03-02 2022-03-02 잉크 차단 기능이 있는, 종이를 캐리어로 하는 승화 인쇄용 전사 재료
CN202280018625.3A CN116897234A (zh) 2021-03-02 2022-03-02 以纸为载体，具有油墨阻隔功能的、用于升华印刷的转印材料
PCT/EP2022/055268 WO2022184768A1 (fr) 2021-03-02 2022-03-02 Matériau de transfert pour impression par sublimation à base de papier en tant que support ayant une fonction de barrière aux encres
JP2023547353A JP7449457B2 (ja) 2021-03-02 2022-03-02 インク遮断機能を備えた、紙を担体とする昇華転写印刷用の転写材料

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21160232.1A EP4053333B8 (fr) 2021-03-02 2021-03-02 Matière de transfert pour l'impression par sublimation à base de papier comme support à fonction de non réception aux encres

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EP4053333C0 EP4053333C0 (fr) 2024-01-17
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EP4053333B8 EP4053333B8 (fr) 2024-02-21

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JP (1) JP7449457B2 (fr)
KR (1) KR102657470B1 (fr)
CN (1) CN116897234A (fr)
BR (1) BR112023017733A2 (fr)
WO (1) WO2022184768A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02106397A (ja) * 1988-10-14 1990-04-18 Fuji Photo Film Co Ltd 熱転写受像材料
JPH04223193A (ja) * 1990-12-26 1992-08-13 Lintec Corp 熱転写紙用原紙およびそれを用いた熱転写紙
JP4196539B2 (ja) 1999-04-21 2008-12-17 株式会社日本シューター 搬送システム
AU783980B2 (en) * 1999-06-01 2006-01-12 Arkwright Incorporated Inkjet transfer systems for dark textile substrates
WO2003006736A1 (fr) * 2001-07-13 2003-01-23 Foto-Wear, Inc. Papier pour impression par sublimation thermique et procede de transfert
DE60211221D1 (de) * 2001-10-05 2006-06-08 Dainippon Printing Co Ltd Zwischenmedium für Übertragungsaufzeichnung
DE10246209A1 (de) 2002-10-04 2004-04-15 Basf Ag Farbstoffzubereitungen
JP2006200071A (ja) 2005-01-20 2006-08-03 Fuji Photo Film Co Ltd 画像記録材料用支持体及びその製造方法
EP1878829A1 (fr) 2006-07-12 2008-01-16 Papierfabriken Cham-Tenero AG Papier de support revetu
US20080229962A1 (en) 2007-03-19 2008-09-25 Matthew Warren Shedd Sublimation transfer paper, method of making, and method for sublimation printing
JP2009269324A (ja) 2008-05-09 2009-11-19 Dainippon Printing Co Ltd 熱転写用支持体および熱転写用受容シート
DE102014116550A1 (de) 2014-11-12 2016-05-12 Papierfabrik August Koehler Se Thermosublimationspapier
EP3098085A1 (fr) * 2015-05-28 2016-11-30 Schoeller Technocell GmbH & Co. KG Matériau de transfert pour l'impression par sublimation
JP2017078128A (ja) * 2015-10-21 2017-04-27 三菱レイヨン株式会社 転写紙用樹脂組成物、その製造方法および積層体
NL2018248B1 (en) * 2017-01-27 2018-08-07 Crown Van Gelder B V Paper composition for transfer printing
JP7242070B2 (ja) 2020-09-25 2023-03-20 株式会社ユニバーサルエンターテインメント 遊技機

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CN116897234A (zh) 2023-10-17
WO2022184768A1 (fr) 2022-09-09
EP4053333C0 (fr) 2024-01-17
BR112023017733A2 (pt) 2023-10-03
EP4053333B8 (fr) 2024-02-21
KR20230150794A (ko) 2023-10-31
JP7449457B2 (ja) 2024-03-13
KR102657470B1 (ko) 2024-04-15
EP4053333A1 (fr) 2022-09-07
JP2024506011A (ja) 2024-02-08

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