EP1181409A1 - Systemes de transfert par jet d'encre pour substrats textiles fonces - Google Patents

Systemes de transfert par jet d'encre pour substrats textiles fonces

Info

Publication number
EP1181409A1
EP1181409A1 EP99921049A EP99921049A EP1181409A1 EP 1181409 A1 EP1181409 A1 EP 1181409A1 EP 99921049 A EP99921049 A EP 99921049A EP 99921049 A EP99921049 A EP 99921049A EP 1181409 A1 EP1181409 A1 EP 1181409A1
Authority
EP
European Patent Office
Prior art keywords
layer
transfer system
ink
inkjet
white background
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.)
Granted
Application number
EP99921049A
Other languages
German (de)
English (en)
Other versions
EP1181409B1 (fr
Inventor
Ulf Bamberg
Peter Kummer
Ilona Stiburek
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.)
Arkwright Inc
Original Assignee
Arkwright Inc
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
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Application filed by Arkwright Inc filed Critical Arkwright Inc
Publication of EP1181409A1 publication Critical patent/EP1181409A1/fr
Application granted granted Critical
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Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/0057—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material where an intermediate transfer member receives the ink before transferring it on the printing material
    • 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
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
    • 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
    • B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
    • B41M5/506—Intermediate layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
    • B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
    • B44C1/17—Dry transfer
    • B44C1/1712—Decalcomanias applied under heat and pressure, e.g. provided with a heat activable adhesive
    • B44C1/1716—Decalcomanias provided with a particular decorative layer, e.g. specially adapted to allow the formation of a metallic or dyestuff layer on a substrate unsuitable for direct deposition
    • 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
    • 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
    • D06P5/007—Transfer printing using non-subliming 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
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06Q—DECORATING TEXTILES
    • D06Q1/00—Decorating textiles
    • D06Q1/12—Decorating textiles by transferring a chemical agent or a metallic or non-metallic material in particulate or other form, from a solid temporary carrier to the textile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
    • B41M5/508—Supports
    • 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

Definitions

  • the present invention relates to an ink jet transfer system or an ink jet transfer print according to the preamble of claim 1, and a method according to independent claims 14 and 16.
  • Transfer prints are very popular because they enable the application of any graphic representations, patterns, images or typefaces, in particular on items of clothing such as T-shirts, sweatshirts, shirts or other textile substrates such as mouse pads.
  • ink-jet transfer systems ink-jet transfer prints
  • the user of the transfer print generates the desired, electronically processable image by means of a computer, which image is sent from the computer to a suitable printer, for example an inkjet printer, which in turn prints the desired image on the transfer system.
  • the transfer print produced in this way must have a quality which permits further use for printing on, for example, a textile substrate.
  • the desired graphic representation is applied to the desired textile substrate for adhesion.
  • graphical representations under the supply of heat and pressure via a hot fume hood and, if necessary, by means of a previous cold fume hood to the desired textile substrate.
  • US Pat. No. 5,242,739 describes an image-receptive, heat-sensitive transfer paper which comprises the following constituents: (a) a flexible, cellulose-containing, non-woven, tissue-like paper which has an upper and a lower surface and (b) an image-receptive melt transfer film layer which is itself located on the upper surface of the sheet base, c) and, if appropriate, a hotmelt intermediate layer.
  • the film layer consists of approximately 15 to 80% by weight of a film-forming binder and approximately 85 to approximately 20% by weight of a powdered thermoplastic polymer, the film-forming binder and the thermoplastic polymer having a melting point of between approximately 65 ° C. and 180 ° C.
  • 5,501,902 represents a further development of US Pat. No. 5,242,739, which likewise consists of a two-layer system, although an ink viscosity agent is also present to improve the printed image.
  • the transfer print of US Pat. No. 5,501,902 preferably contains a cationic, thermoplastic polymer to improve the ink absorption capacity.
  • polyesters polyethylene wax, ethylene-vinyl acetate copolymers and as binders polyacrylates, styrene-vinyl acetate copolymers, nitrile rubbers, polyvinyl chloride, polyvinyl acetate, ethylene acrylate copolymers and melamine resins are usually used as pigments for the absorption of the ink dye called.
  • WO 98/30749 (Oce-Switzerland) describes an inkjet transfer system which comprises a carrier material, a hot-melt layer applied to the carrier material and at least one ink-receiving layer.
  • the ink receiving layer is a mixture of a highly porous pigment and a binder, the molecules of the pigment and optionally the binder and optionally the hot melt being capable of forming chemical bonds with the dye molecules of the ink.
  • a transfer print is applied to a dark textile part in a 2-step process or a 1-step process.
  • a white textile fabric finished on the back with hot-melt adhesive is laminated with a transfer film printed in a xerographic process (or ink-jet) and then with the hot-melt adhesive side onto the dark garment to be printed (T- Shirt) pressed on using a transfer press at approx.
  • the image side on which the thin film (transfer layer) is located is protected with a silicone paper. After the transfer process, which takes about 10 seconds, the silicone paper is peeled off.
  • the adhesion of the transfer printing system to the dark textile piece is achieved by means of a polyethylene or polyester / polyamide textile adhesion (i.e. a hot melt adhesive) of the contrast base on the textile substrate.
  • the known systems which are accessible by means of a 1-step process, are based on a white, thick transfer film with a thickness of approximately 400 to 600 ⁇ m, which are printed on using the ink-jet process or xerographic process and then printed on using a transfer press dark piece of textile can transfer.
  • the disadvantages of this system are in particular an unsatisfactory image quality immediately after the transfer to the textile piece. The pictures appear dull and blurry.
  • the overall system is comparatively thick, it looks unaesthetic (armor-like) and it is not breathable.
  • a serious additional disadvantage is the fact that the user who does not have a transfer press and consequently switches to using a commercially available iron is faced with a sustained deterioration in the adhesion of the transfer film to the textile piece. This loss of adhesion is further accelerated by repeated washing cycles.
  • Another disadvantage of the two conventional printing systems is their application method to the textile substrate, whereby the application of a contrasting background to the textile piece under extremely high pressure cannot be carried out by private individuals without adequate equipment.
  • the disadvantages set out above have had the decisive consequence that the currently marketed transfer printing systems have not spread or even prevailed on the market as desired. Rather, there is still a great need for satisfactory systems which do not have the disadvantages listed above.
  • a transfer printing system for dark textile underlays should be provided, which on the one hand provides the desired high contrast, high resolving power and on the other hand avoids unsatisfactory washing resistance due to insufficient adhesion of the transfer printing on the textile underlay and ultimately as uncomplicated and rational as possible, i.e. can be applied to a piece of textile using an iron as part of a 1-step process. It was also a goal of the present invention
  • Invention to provide a method for producing textile transfer printing systems for dark textile substrates with high wash resistance.
  • the inkjet transfer system comprises or consists of a carrier material (background layer), an adhesive layer applied to the carrier material - preferably a hot melt Anlagen - which has dispersed, spherical (spherical) polyester particles with a grain size of less than 30 ⁇ m, in turn a white background layer applied to the adhesive layer, and at least one ink receiving layer applied to the background layer.
  • the white background layer which is located directly on the adhesive layer, comprises or consists of a permanently elastic plastic, which is non-meltable at ironing temperatures (ie up to approximately 220 ° C.) and filled with white
  • the elastic plastic must therefore not melt at the ironing temperature, in order not to stick with the adhesive layer, e.g. the hot melt that creates the adhesion to the textile substrate to deliver an undesired mixture with deteriorated (adhesion and coverage) properties.
  • the white background layer must be elastic in order not to lead to brittle fracture in the event of subsequent mechanical loads.
  • elasticity means an elongation of at least 200%, preferably between 500-1000% and very particularly preferably about 800%.
  • Preferred elastic plastics for the white background layer are selected from the group comprising the polyurethanes, polyacrylates or polyalkylenes or also natural rubber (latex).
  • the most preferred elastic plastic contains or consists of polyurethane.
  • Suitable pigments are only those that do not melt at ironing temperatures.
  • the filled white layer or the polymers contained therein, such as polyurethane, must not melt, because the white pigments would otherwise sink or penetrate into the textile substrate. This would weaken or even destroy the white background color, which is to be provided according to the invention in order to provide a background for dark imprints.
  • Particularly preferred white pigments are inorganic pigments selected from the group comprising BaS0, ZnS, Ti0 2 , ZnO, SbO.
  • Organic pigments can also be used for the white background layer, provided that these cannot be melted at ironing temperatures.
  • These pigments can be mixed alone or as a mixture with other (up to about 220 ° C) non-meltable carriers, such as silicates or aluminates.
  • the overall system surprisingly meeting the following requirements in spite of the non-meltable white background layer: a)
  • the total of 4 chemically different layers are within the scope of the coating process (Coating process), and the melting process (ironing onto the textile substrate), in particular chemically, compatible. There is no beading or detachment of the white background layer from the adhesive layer and / or the ink receiving layer from the white background layer.
  • the 4 chemically different layers also have good adhesion to one another after the transfer system has been received, so that individual layers of the transfer system ironed on the textile substrate are not chipped or detached.
  • the transfer system also shows excellent adhesion and elasticity on the textile substrate, especially after ironing onto the textile substrate.
  • the said elasticity is of great importance because the ironed-on transfer system does not become brittle and therefore must not cause a lasting deterioration in the graphic representation on the textile substrate.
  • sporting loads eg tugging or wrinkling of the T-shirt
  • the transfer system according to the invention can be washed as a composite on the textile substrate without losing color fastness and adhesion suffer from it on the textile substrate.
  • the glued layer sequence represents a sandwich structure, in which the white background layer is glued to the textile substrate, with no mixing of the background layer with the adhesive layer, e.g. a hot-melt layer, which is possible through a melting process and the overall system is nevertheless so flexible that the image representation printed on the ink-receiving layer is not detached by mechanical stress.
  • the adhesive layer e.g. a hot-melt layer
  • the adhesive layer must be essentially or completely meltable and may only be adhesive in the molten state.
  • the adhesive layer which is located directly on the carrier material, is a pure hot melt layer.
  • the hot-melt layer is an essentially wax-like polymer which is easy to melt and can thus be transferred to the textile substrate together with the printed ink-receiving layer, for example by buffing. Thanks to its wax-like properties, the hot-melt layer primarily causes adhesion to the textile substrate. On the other hand, the hot-melt layer must also provide good adhesion to the white background layer, which is chemically very different (not waxy, not fusible).
  • spherical polyester particles of a grain size of less than 30 ⁇ m are dispersed in the hot melt layer. These spherical polyester particles are in turn chemically mixed with the white background layer. more so (than the pure hotmelt wax components) so that they can form or strengthen the adhesion to the white background layer when melting. A particle size of less than 30 ⁇ m is required so that the particles do not protrude from the layer and thus lead to malfunctions during coating.
  • the spherical polyester particles are preferably obtained in that, for example, cryomilled polyester is stirred into the wax-like hot-melt compound during the preparation of a dispersion and melted to form droplets of 30 ⁇ m in size (emulsion).
  • a preferred hot melt compound is, for example, an ethylene acrylic acid copolymer or a PU dispersion. This is prepared with the spherical polyester particles with a grain size of less than 30 ⁇ m to form a hot melt dispersion.
  • a hot melt adhesive dissolved in a solvent can also be used as the adhesive layer.
  • a solvent adhesive based on polyamides or polyethylenes which has good adhesion to the textile substrate on the one hand and the white background layer on the other hand, are suitable for carrying out the present invention.
  • the adhesive layer contains or consists of a pure hot melt, because this is by means of a comparatively simple external control, i.e. the desired adhesion to the white background layer and the textile substrate is formed in a convenient but efficient manner by ironing on.
  • the ink absorption layer (ink layer) is located on the white background layer and primarily comprises a highly porous pigment and a binder.
  • the highly porous pigment is used on the one hand for the purely mechanical absorption of the ink when printing out the desired one graphic representation, with a maximum porosity ensures a particularly high absorption capacity.
  • Binding agents are necessary to bind the highly porous pigments to the product surface, in order to enable the processing (printing) of the inkjet transfer system.
  • the ink-receiving layer examples are polyester, PE wax, PE powder, ethylene-VAC copolymers, nylon, epoxy compounds. Polyacrylates, styrene-butadiene copolymers, ethylene-VAC copolymers, nylon, nitrile rubbers, PVC, PVAC, ethylene-acrylate copolymers are suitable as binders.
  • the at least one ink-receiving layer comprises a mixture of a highly porous pigment and a binder, more preferably the molecules of the highly porous pigment and optionally the binder and optionally the adhesive layer, e.g. the hot-melt layer is capable of forming, essentially covalent, bonds with the dye molecules of the ink.
  • the hot-melt layer is capable of forming, essentially covalent, bonds with the dye molecules of the ink.
  • the hot-melt layer is capable of forming, essentially covalent, bonds with the dye molecules of the ink.
  • the essentially covalent bonds between the dye molecules of the ink and the molecules of the pigment and of the binder are shown below formed, inter alia, by supplying energy, for example by ironing (at approximately 190 ° C.) of the ink jet transfer system according to the invention onto the textile substrate.
  • acid dyes for example azo dyes according to the formula I
  • azo dyes are usually used in the printer inks on the market.
  • R H, CH.COOH or CH, CH, COOH
  • the molecules of the ink dyes are predominantly in solution as anions and also have reactive groups which allow the formation of chemical bonds with the reactive groups of the pigment molecules and, if appropriate, of the binder molecules.
  • the reactive groups are usually one or more sulfonate groups or carboxylate groups per dye molecule. Under suitable conditions, for example under heating when ironing the inkjet transfer system onto the textile substrate, covalent or rather ionic bonds or intermediate valence bonds between the sulfonate groups or carboxylate groups and the reactive groups, for example amino groups, of the pigment or . Form binder.
  • the covalent bonds of the dye molecules with the molecules of the ink-receiving layer with formation of, for example, sulfonamides (-S0 2 NH-R) or amide groups (-CONH-R) (in addition to also more zwitterionic -S0 " NH 3 + -R Groups) are particularly preferred.
  • the ink-receiving layer of the ink jet transfer system consists of a highly porous pigment and a binder, at least one of the two components, in particular the pigment present in large quantities, having reactive amino groups which form essentially covalent bonds are capable of the dye molecules of the ink liquid.
  • the ink-receiving layer comprises a highly porous polyamide pigment and a binder consisting of a soluble polyamide, the terminal, free amino groups of the polyamide pigment and the polyamide binder being used to fix reactive groups, for example sulfonate groups or carboxylate groups that are capable of dye molecules.
  • reactive groups for example sulfonate groups or carboxylate groups that are capable of dye molecules.
  • the ink jet transfer system according to the present invention must have a high absorbency or absorption capacity of ink, in order to do so to ensure a clear print image.
  • This requirement is achieved by providing a pigment, preferably a polyamide pigment, with high porosity.
  • Preferred polyamide pigments which are used for the ink jet transfer systems according to the present invention, preferably have a spherical, for example a spherical, geometry and the highest possible inner surface.
  • Grain sizes of the polyamide pigments used are in a range of approximately 2 ⁇ m and approximately 45 ⁇ m, a range of 2 to 10 ⁇ m being particularly preferred.
  • the inner surface of the highly porous pigment is at least about 15 m 2 / g, preferably it is between about 20-30 m 2 / g. It has been shown that in particular a
  • Polyamide pigment with the trade name "Orgasol” has the required properties, in particular the high-grade porosity.
  • a highly porous polyamide pigment with an inner surface area of at least approximately 15 m 2 / g and grain sizes of approximately 2 ⁇ m and approximately 45 ⁇ m is obtained by means of anionic polyaddition and a subsequent controlled precipitation process.
  • a polyamide condensation product for example in the form of granules
  • the polyamide pigments are literally grown and the growth of the pigments is stopped when the desired particle size is reached.
  • 85-95% of the polyamide pigment thus obtained have the desired shape and grain size, while only a maximum of 15% have a smaller or larger grain size.
  • the binder preferably also consists of a polyamide.
  • the nature of the polyamide used as a binder differs from that of the polyamide pigment in that it is used as a solution and therefore does not have to meet any special formal requirements.
  • the use of polyamide as a binder is therefore less critical. It only has to be soluble in a suitable solvent, for example alcohol or an alcohol / water mixture, and preferably has free terminal amino groups with the aid of which dye molecules, for example sulfone groups of azo dyes, or ester groups can be fixed.
  • the ratio of highly porous pigment and the binder in the ink-receiving layer of the ink jet transfer system according to the invention is between approximately 5: 1 and 1: 1, preferably 3: 1 and 2: 1, and very particularly preferably 2.4: 1.
  • the hot melt preferably used as an adhesive layer in the ink jet transfer system according to the invention is located directly on the removable carrier material and is used to transfer the graphic representation printed by the ink jet printer to the textile substrate and to ensure adhesion to the white background layer.
  • This transfer is effected, for example, by cold deduction, ie by ironing, cooling and peeling off the cover layer (baking paper).
  • the hot melt layer and the ink jet Recording layer, but not the white background layer melted. In this way, the image printed on the ink-receiving layer is transferred to the textile substrate without any distortions due to melting.
  • hotmelt is essentially waxy, i.e. it can be melted.
  • hot melts melt in a range of approximately 100-120 ° C, while the highly porous pigments preferably melt in a range of approximately 120-180 ° C, preferably 140-160 ° C.
  • a common hot melt is, for example, an ethylene acrylic acid copolymer dispersion.
  • Transfer system according to the present invention may still be included, but care must be taken when using such additives that the washability of the final transfer print does not deteriorate as a result.
  • a dispersing additive for organic pigments is useful for producing the inkjet transfer system according to the invention.
  • any release paper can be cold-drawn, preferably a heat-resistant paper, for example silicone paper, is used.
  • the coating process comprises the following steps: a) applying an adhesive layer, preferably a hot-melt layer, which has dispersed, spherical polyester particles with a grain size of less than 30 ⁇ m, to a carrier material, for example silicone paper, with the aid of a coating agent, for example a coating machine, with a layer thickness of approximately 30 to 40 ⁇ m being set, then drying the hot-melt layer, and b) applying a white background layer consisting of an elastic plastic which is non-meltable at ironing temperatures (ie up to approximately 220 ° C.) and which white, preferably inorganic, pigments is filled onto the hot melt layer, preferably with a final layer thickness of approximately 20-35 ⁇ m, c) application of at least one ink absorption layer dispersion onto the white background layer, and d) drying of the ink jet transfer system.
  • an adhesive layer preferably a hot-melt layer, which has dispersed, spherical polyester particles with a grain size of less than 30 ⁇
  • the two / multiple application of the ink-receiving layer in accordance with step c) has the advantage that a smooth and uniform surface and an ink-receiving layer with a balanced layer thickness are formed, as a result of which the printing process or the resulting printed image are positively influenced.
  • the graphic representation to be applied to the textile substrate is first printed onto the ink-jet transfer system thus obtained using a conventional printer, for example an ink-jet printer (ink-jet plotter), cut out, removed from the base (for example silicone paper) and removed Baking paper covered and then ironed onto the desired textile substrate, for example a T-shirt at a temperature of between about 160 and 220 ° C, preferably 170 ° C, for at least 10 seconds.
  • the bottom layer is the carrier material, which is pulled off and discarded before the graphic representation is applied.
  • a heat-resistant silicone paper (baking paper) is used as the preferred cover paper.
  • the printed graphic representation obtained in this way (cold print) is smooth and matt.
  • the hot melt layer is applied to a carrier material:
  • silicone paper with a layer thickness of approximately 0.1 mm, is coated with ethylene acrylic acid copolymer, which has dispersed, spherical polyester particles with a grain size of between 5-25 ⁇ m .
  • the ratio of ethylene acrylic acid copolymer and spherical polyester particles is approximately 60:40 and the final layer thickness of the hot melt layer is approximately 30 ⁇ m.
  • a white background layer (polyurethane film) with a thickness of approximately 40 ⁇ m containing approximately 15% by weight of TiO 2 is then applied to the silicone paper coated with the hot melt.
  • a dispersion containing the ink-receiving layer is then applied in two passes to said elastic background layer made of polyurethane / TiO 2.
  • a layer thickness of 15 ⁇ m is applied in the first pass and a layer thickness of 15 ⁇ m in the second pass, which results in a total layer thickness of the ink-receiving layer of 30 ⁇ m.
  • the ink-receiving layer was previously produced as follows: an ethanol / water mixture in a ratio of 3: 1 is initially introduced and a soluble polyamide binder is dissolved therein with heating to 45.degree.
  • the highly porous polyamide pigment "Orgasol 3501 EX D NATl" with a grain size of 10 ⁇ m and an inner surface of about 25 m 2 / g pigment is then dispersed into the solution.
  • an organic pigments marketed by Coatex provided, dispersion additive with the product name COADIS 123K introduced and the dispersion stirred for 10 minutes at room temperature.
  • the solvents are evaporated on the coating machine in order to obtain a solid ink-receiving layer on which the desired graphic representation can be printed using an ink-jet printer.
  • the desired foils can be cut to size for the required needs.
  • Example 2 Using an Inkjet Transfer System for Printing
  • Transfer system is used to print a graphic representation on a T-shirt.
  • the desired electronically processable and stored graphic representation is printed out by the computer using an inkjet printer on the page, which was obtained in Example 1 as an inkjet transfer system.
  • the printout is then removed and the white side is placed on the desired side of the selected T-shirt and ironed on for 10 seconds using a hot iron (baking paper + temperature of approx. 190 ° C).
  • the t-shirt thus processed is then cooled to about room temperature and the baking paper, i.e. peeled off the silicone paper. The resulting picture is shiny and matt.

Abstract

L'invention concerne un système de transfert par jet d'encre ou une impression par transfert par jet d'encre pour substrats textiles foncés, qui résiste fortement au lavage et qui est d'une grande solidité, tout en étant écologique. L'invention concerne en outre un procédé permettant de produire un tel système et un processus d'impression faisant appel au système de transfert par jet d'encre selon l'invention. Le système de transfert par jet d'encre présenté comprend un matériau support et une couche thermofusible qui est appliquée sur ledit matériau support et présente des particules de polyester sphériques dispersées, d'une grandeur inférieure à 30 mu m. Ledit système comprend également une couche de fond blanche qui est constituée d'un matériau synthétique élastique qui ne fond pas à des températures pouvant aller jusqu'à 220 DEG C, qui est remplie de pigments inorganiques et qui est appliquée sur la couche thermofusible. Le système présenté comporte en outre au moins une couche d'absorption d'encre.
EP99921049A 1999-06-01 1999-06-01 Systemes de transfert par jet d'encre pour substrats textiles fonces Expired - Lifetime EP1181409B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB1999/000976 WO2000073570A1 (fr) 1999-06-01 1999-06-01 Systemes de transfert par jet d'encre pour substrats textiles fonces

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EP1181409A1 true EP1181409A1 (fr) 2002-02-27
EP1181409B1 EP1181409B1 (fr) 2004-01-14

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US (12) US7943214B1 (fr)
EP (1) EP1181409B1 (fr)
AU (1) AU783980B2 (fr)
DE (1) DE59908325D1 (fr)
WO (1) WO2000073570A1 (fr)

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US20120105560A1 (en) 2012-05-03
EP1181409B1 (fr) 2004-01-14
DE59908325D1 (de) 2004-02-19
US20120120170A1 (en) 2012-05-17
US9669618B2 (en) 2017-06-06
US20120236099A1 (en) 2012-09-20
US20140044895A1 (en) 2014-02-13
WO2000073570A1 (fr) 2000-12-07
US20140240421A1 (en) 2014-08-28
US20120092429A1 (en) 2012-04-19
US20130287973A1 (en) 2013-10-31
AU783980B2 (en) 2006-01-12
US20120118479A1 (en) 2012-05-17
US20120007931A1 (en) 2012-01-12
US20140240420A1 (en) 2014-08-28
AU3841899A (en) 2000-12-18
US20120120132A1 (en) 2012-05-17
US7943214B1 (en) 2011-05-17

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