PatentDe  


Dokumentenidentifikation EP1487643 29.06.2006
EP-Veröffentlichungsnummer 0001487643
Titel BEHANDLUNGSVERFAHREN VON DURCH ÜBERTRAGUNG GEDRUCKTEM PAPIER UND DAVON GEDRUCKTES PAPIER
Anmelder Piconi, Corrado, Castellanza, IT
Erfinder PICONI, Corrado, I-21053 Castellanza, IT;
MARIOTTI, Renato, I-20015 Parabiago, IT;
MENGATO, Daniela, I-20020 Dairago, IT
Vertreter derzeit kein Vertreter bestellt
DE-Aktenzeichen 60211755
Vertragsstaaten AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LI, LU, MC, NL, PT, SE, TR
Sprache des Dokument EN
EP-Anmeldetag 27.03.2002
EP-Aktenzeichen 027352178
WO-Anmeldetag 27.03.2002
PCT-Aktenzeichen PCT/EP02/03687
WO-Veröffentlichungsnummer 0003080359
WO-Veröffentlichungsdatum 02.10.2003
EP-Offenlegungsdatum 22.12.2004
EP date of grant 24.05.2006
Veröffentlichungstag im Patentblatt 29.06.2006
IPC-Hauptklasse B41M 5/035(2006.01)A, F, I, 20051017, B, H, EP
IPC-Nebenklasse D06P 5/00(2006.01)A, L, I, 20051017, B, H, EP   

Beschreibung[en]

The present invention relates to a treatment process of transfer printed paper and the transfer printed paper thus obtained.

A sublimatic printing process whereby it is possible to print polyester fabrics with excellent results, has been known and widely used for some time. Specific printed paper with sublimatic colours, called " transfer printed paper" is used, which when put in close contact in a hot calender with polyester fabrics, accurately releases the colours present on the paper onto the fabric, thus allowing the exact print present on the paper to be repeated.

This paper is based on the sublimation principle of the dye which is absorbed by the fibre of polyester fabric.

This printing system is currently only used for polyester fabrics, as other textile fibres, due to their incapacity to absorb dispersed or plasto-soluble dyes used in transfer printed paper, cannot be printed.

Polyamide fibres (nylon) are capable of only partially receiving dyes and can therefore only be used in a minimum percentage.

It is impossible, on the other hand, to effect the colouring of cellulose fibres with this technique.

Sublimatic printing processes are extremely ecological printing processes, which are easy to apply without costly equipment and particular design precision. For these reasons they have obtained great commercial success in the last few years.

It has been estimated in fact that in Europe alone, about 500 million m2 of polyester fabric are printed with this system called "Sublimatic Transfer Printing".

Various studies and attempts have therefore been effected to try and discover how to use the sublimatic process and specific transfer printed paper in the printing of vegetable fibres such as cotton, linen, etc.

Attempts have been made, for example, to treat cotton with special polymers or using various dyes in paper printing, but so far there has been no success in obtaining a printing process and cotton, or vegetable fibre in general, with interesting qualitative and commercial characteristics.

The objective of the present invention is to identify a treatment of paper already printed with sublimatic colours, i.e. of transfer printed paper, which makes it suitable for the sublimatic printing of vegetable fibres (cellulose) and mixed fibres, consequently overcoming the limits which characterize the known art.

An object of the present invention therefore relates to an application process of a polymeric carrier consisting of at least one thermoplastic polymer based on polyester or copolyester to sublimatic transfer printed paper.

A further object of the present invention relates to sublimatic transfer printed paper to which a polymeric carrier consisting of at least one thermoplastic polymer based on polyester or copolyester, has been applied.

The fundamental advantage of the process according to the present invention lies in the fact that it makes it possible to use, in the printing of vegetable fibres, existing technologies and paper currently adopted for the printing of polyester fabrics.

In particular, the application process of a polymeric carrier consisting of at least one thermoplastic polymer based on polyester or copolyester to sublimatic transfer printed paper, can be effected by melting, coupling, coating or sintering.

Application by the melting of the polymeric carrier to the sublimatic transfer printed paper can be carried out by means of bubble extrusion, in a flat head or in a calender.

Application by the coupling of the polymeric carrier to the sublimatic transfer printed paper can be carried out by the coupling of a previously formed film.

Application by the coating of the polymeric carrier to the sublimatic transfer printed paper can be carried out by means of the rotogravure, roll revers, etc. of solutions of said polymeric carrier.

As indicated above, the dyes printed on the transfer paper belong to the chemical group of dyes called dispersed or plasto-soluble dyes.

The polymeric carrier consists of polyester and copolyester thermoplastic polymers.

In particular, the polymeric carrier consists of polyester and copolyester thermoplastic polymers having a melting point ranging from 80 to 150°C. The melting points preferably range from 110 to 130°C.

The polyester and copolyester thermoplastic polymers are preferably obtained by the reaction of aromatic and/or aliphatic dicarboxylic acids with aliphatic and/or cyclic bifunctional glycols.

The aromatic and/or aliphatic dicarboxylic acids are preferably selected from isophthalic acid, terephthalic acid, their anhydrides and/or their esters, phthalic anhydride, sebacic acid, azaleic acid, adipic acid, etc.

In particular, the esters are preferably methyl esters.

The aliphatic and/or cyclic bifunctional glycols are preferably selected from butanediol, ethanediol, propanediol, hexanediol, neopentylglycol and polyols such as polypropyleneglycol and polytetramethyleneglycol, etc.

In particular, polypropyleneglycol has a molecular weight ranging from 500 to 1000 and polytetramethyleneglycol has a molecular weight ranging from 1000 to 2000.

The process according to the present invention consequently allows printed dyes to be transferred onto transfer printed paper, vegetable and mixed fibres under the same conditions adopted for the normal sublimatic printing of polyester fibres.

An object of the present invention also relates to the use of the transfer printed paper obtainable with the process according to the present invention, for the sublimatic printing of fabrics and/or vegetable and/or mixed fibres, in particular cotton or linen fabrics and/or fibres.

The present invention also relates to a fabric or vegetable and/or mixed fibre, printed by means of a sublimatic printing process with the transfer printed paper obtainable with the process according to the present invention.

The characteristics and advantages of the process and transfer printed paper according to the present invention, can be better understood from the following detailed and illustrative description, referring to the following examples.

EXAMPLE 1

15.5 kg of dimethylterephthalate, 15.5 kg of dimethylisophthalate, 41.4 kg of 1,4-butanediol and 0.125 kg of catalyst were charged into a reactor.

The mixture was then stirred and heated, by means of thermal oil exchangers, to a temperature of 245°C for an hour and a half. After distilling the methanol formed, 8.14 kg of sebacic acid were added. The reaction was then put under vacuum at a pressure of 15960 Pa (120 mmHg) and left to react for a further hour. The pressure was subsequently further reduced to 133 Pa (1 mmHg)and the mixture was brought to 260°C for two hours.

After distilling the water from the reactor, the non-reacted 1,4-butanediol and possible tetrahydrofuran formed by cyclization of the 1,4-butandediol, a polymer is obtained, having an intrinsic viscosity equal to 0.735 and a crystalline melting point equal to 110°C.

EXAMPLE 2

The same procedure is adopted as described in Example 1 with the only difference that the sebacic acid is substituted with 7.8 kg of azaleic acid.

The polymer thus obtained has an intrinsic viscosity equal to 0.715 and a crystalline melting point equal to 108°C.

The polymers obtained according to one of the above examples are then reduced to granules and applied to the paper by means of the equipment and processes previously indicated, thus allowing sublimatic prints to be effected on vegetable and mixed fibres which otherwise could not be printed with this technique.


Anspruch[de]
Verfahren umfassend das Aufbringen eines aus wenigstens einem auf Polyester oder Copolyester basierenden thermoplastischen Polymer bestehenden polymeren Trägers auf bedrucktes Sublimationstransferpapier. Verfahren nach Anspruch 1,

dadurch gekennzeichnet, dass

die Aufbringung des polymeren Trägers auf das bedruckte Transferpapier mittels Schmelzen, Kopplung, Beschichten oder Sintern bewirkt wird.
Verfahren nach Anspruch 2,

dadurch gekennzeichnet, dass

das Aufbringen durch Schmelzen mittels Blasen-Extrusionsanlagen, in einem Flachkopf oder in einem Kalander bewirkt wird.
Verfahren nach Anspruch 2,

dadurch gekennzeichnet, dass

das Aufbringen durch Kopplung durch die Kopplung eines vorher gebildeten polymeren Films bewirkt wird.
Verfahren nach Anspruch 2,

dadurch gekennzeichnet, dass

das Aufbringen durch Beschichten mittels Rotationstiefdruck, Gegenlaufwalzen etc. von Lösungen des polymeren Trägers bewirkt wird.
Verfahren nach Anspruch 2,

dadurch gekennzeichnet, dass

das Aufbringen durch Sintern durch Sintern von Pulvern bewirkt wird.
Verfahren nach einem der vorstehenden Ansprüche,

dadurch gekennzeichnet, dass

der polymere Träger aus thermoplastischen Polyester- und Copolyesterpolymeren mit Schmelzpunkten im Bereich von 80 bis 150°C besteht.
Verfahren nach Anspruch 7,

dadurch gekennzeichnet, dass

die Schmelzpunkte im Bereich von 110 bis 130°C liegen.
Verfahren nach einem der vorhergehenden Ansprüche,

dadurch gekennzeichnet, dass

der polymere Träger aus durch Reaktion von aromatischen und/oder aliphatischen Dicarbonsäuren, deren Anhydriden und/oder deren Estern mit aliphatischen und/oder zyklischen bifunktionellen Glykolen erhältlichen thermoplastischen Polyester- und Copolyesterpolymeren besteht.
Verfahren nach Anspruch 9,

dadurch gekennzeichnet, dass

die aromatischen und/oder aliphatischen Dicarbonsäuren und/oder deren Anhydride und/oder deren Ester ausgewählt sind aus Isophthalsäure, Terephthalsäure, deren Anhydriden und/oder deren Estern, Phthalsäureanhydrid, Sebacinsäure, Azelainsäure und Adipinsäure.
Verfahren nach Anspruch 10,

dadurch gekennzeichnet, dass

die Ester Methylester sind.
Verfahren nach Anspruch 9,

dadurch gekennzeichnet, dass

die aliphatischen und/oder zyklischen bifunktionellen Glykole ausgewählt sind aus Butandiol, Ethandiol, Propandiol, Hexandiol, Neopentylglykol sowie Polyolen, wie beispielsweise Polypropylenglykol und Polytetramethylenglykol.
Verfahren nach Anspruch 12,

dadurch gekennzeichnet, dass

das Polypropylenglykol ein Molekulargewicht im Bereich von 500 bis 1000 und das Polytetramethylenglykol ein Molekulargewicht im Bereich von 1000 bis 2000 aufweist.
Bedrucktes Sublimationstransferpapier erhältlich durch ein Verfahren nach einem der vorhergehenden Patentansprüche 1 bis 13. Bedrucktes Papier nach Anspruch 14,

dadurch gekennzeichnet, dass

die auf das Papier gedruckten Farbstoffe zu der chemischen Gruppe der Suspensionsfarbstoffe oder plastelösliche Farbstoffe genannten Farbstoffe gehört.
Verwendung eines bedruckten Transferpapiers nach einem der Ansprüche 14 und 15 zum Sublimationsdruck von Textilien und/oder Pflanzenfasern und/oder Mischfasern. Verwendung nach Anspruch 16,

dadurch gekennzeichnet, dass

das Textil und/oder die Faser Baumwolle oder Leinen ist.
Textil oder Pflanzenfaser und/oder Mischfaser bedruckt durch ein Sublimationsdruckverfahren mit einem bedruckten Transferpapier nach einem der Ansprüche 14 und 15.
Anspruch[en]
A process comprising the application of a polymeric carrier consisting of at least one thermoplastic polymer based on polyester or copolyester to sublimatic transfer printed paper. The process according to claim 1, characterized in that the application of the polymeric carrier to the transfer printed paper is effected by means of melting, coupling, coating or sintering. The process according to claim 2, characterized in that the application by melting is effected by means of bubble extrusion plants, in a flat head or in a calender. The process according to claim 2, characterized in that the application by coupling is effected by the coupling of a previously formed polymeric film. The process according to claim 2, characterized in that the application by coating is effected by means of a rotogravure, roll reverse, etc. of solutions of the polymeric carrier. The process according to claim 2, characterized in that the application by sintering is effected by the sintering of powders. The process according to any of the previous claims, characterized in that the polymeric carrier consists of polyester and copolyester thermoplastic polymers having melting points ranging from 80 to 150°C. The process according to claim 7, characterized in that the melting points range from 110 to 130°C. The process according to any of the previous claims, characterized in that the polymeric carrier consists of polyester and copolyester thermoplastic polymers obtained by the reaction of aromatic and/or aliphatic dicarboxylic acids, their anhydrides and/or their esters, with aliphatic and/or cyclic bifunctional glycols. The process according to claim 9, characterized in that the aromatic and/or aliphatic dicarboxylic acids and/or their anhydrides and/or their esters are selected from isophthalic acid, terephthalic acid, their anhydrides and/or their esters, phthalic anhydride, sebacic acid, azaleic acid, adipic acid. The process according to claim 10, characterized in that the esters are methyl esters. The process according to claim 9, characterized in that the aliphatic and/or cyclic bifunctional glycols are selected from butanediol, ethanediol, propanediol, hexanediol, neopentylglycol and polyols such as polypropyleneglycol and polytetramethyleneglycol. The process according to claim 12, characterized in that the polypropyleneglycol has a molecular weight ranging from 500 to 1000 and the polytetramethyleneglycol has a molecular weight ranging from 1000 to 2000. Sublimatic transfer printed paper obtainable by means of the process according to any of the previous claims from 1 to 13. The printed paper according to claim 14, characterized in that the dyes printed on the paper belong to the chemical group of dyes called dispersed or plasto-soluble dyes. Use of the transfer printed paper according to any of the claims from 14 and 15, for the sublimatic printing of fabrics and/or vegetable and/or mixed fibres. The use according to claim 16, characterized in that the fabric and/or fibre is cotton or linen. A fabric or vegetable and/or mixed fibre printed by means of a sublimatic printing process with the transfer printed paper according to one of the claims from 14 and 15.
Anspruch[fr]
Procédé comprenant l'application d'un transporteur polymère se composant d'au moins un polymère thermoplastique basé sur du polyester ou du copolyester sur du papier imprimé de transfert sublimatique. Procédé selon la revendication 1, caractérisé en ce que l'application du transporteur polymère sur le papier imprimé de transfert est effectuée par des moyens de fusion, couplage, recouvrement ou frittage. Procédé selon la revendication 2, caractérisé en ce que l'application par fusion est effectuée au moyen d'installations d'extrusion à bulles, dans une tête fraisée ou dans une calandre. Procédé selon la revendication 2, caractérisé en ce que l'application par couplage est effectuée par le couplage du film polymère formé auparavant. Procédé selon la revendication 2, caractérisé en ce que l'application par recouvrement est effectuée par des moyens de rotogravure, d'inversion au rouleau, etc. de solutions du transporteur polymère. Procédé selon la revendication 2, caractérisé en ce que l'application par frittage est effectuée par le frittage de poudres. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le transporteur polymère se compose de polymères thermoplastiques polyester et copolyester ayant des points de fusion allant de 80 à 150°C. Procédé selon la revendication 7, caractérisé en ce que les points de fusion vont de 110 à 130°C. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le transporteur polymère se compose de polymères thermoplastiques polyester et copolyester obtenus par la réaction d'acides dicarboxyliques aromatiques et/ou aliphatiques, de leurs anhydrides et/ou de leurs esters, avec des glycols bifonctionnels aliphatiques et/ou cycliques. Procédé selon la revendication 9, caractérisé en ce que les acides dicarboxyliques aromatiques et/ou aliphatiques et/ou leurs anhydrides et/ou leurs esters sont choisis parmi l'acide isophtalique, l'acide téréphthalique, leurs anhydrides et/ou leurs esters, l'anhydride phtalique, l'acide sébacique, l'acide azaléique, l'acide adipique. Procédé selon la revendication 10, caractérisé en ce que les esters sont des esters méthyliques. Procédé selon la revendication 9, caractérisé en ce que les glycols bifonctionnels aliphatiques et/ou cycliques sont choisis parmi le butanediol, l'éthanediol, le propanediol, l'hexanediol, le néopentylglycol et les polyols tels que le polypropylèneglycol et le polytétraméthylèneglycol. Procédé selon la revendication 12, caractérisé en ce que le polypropylèneglycol a un poids moléculaire allant de 500 à 1000 et le polytétraméthylèneglycol a un poids moléculaire allant de 1000 à 2000. Papier imprimé de transfert sublimatique susceptible d'être obtenu au moyen du procédé selon l'une quelconque des revendications précédentes de 1 à 13. Papier imprimé selon la revendication 14, caractérisé en ce que le colorant imprimé sur le papier appartient au groupe chimique des colorants appelés colorants de dispersion ou plasto-solubles. Utilisation du papier imprimé de transfert selon l'une quelconque des revendications 14 et 15, pour l'impression sublimatique de tissus et/ou fibres végétales et/ou mixtes. Utilisation selon la revendication 16, caractérisée en ce que le tissu et/ou la fibre est du coton ou du lin. Tissu ou fibre végétale et/ou mixte imprimé au moyen d'un procédé d'impression sublimatique avec le papier imprimé de transfert selon l'une des revendications 14 et 15.






IPC
A Täglicher Lebensbedarf
B Arbeitsverfahren; Transportieren
C Chemie; Hüttenwesen
D Textilien; Papier
E Bauwesen; Erdbohren; Bergbau
F Maschinenbau; Beleuchtung; Heizung; Waffen; Sprengen
G Physik
H Elektrotechnik

Anmelder
Datum

Patentrecherche

Patent Zeichnungen (PDF)

Copyright © 2008 Patent-De Alle Rechte vorbehalten. eMail: info@patent-de.com