Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
  • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
  • B41M5/025—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
  • B41M5/0356—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 inks used for printing the pattern on the temporary support or additives therefor, e.g. dyes, transferable compounds, binders or transfer promoting additives
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S8/00—Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
  • Y10S8/916—Natural fiber dyeing
  • Y10S8/919—Paper

Definitions

• the present invention relates to a process for the production of transfer papers for thermal transfer printing with sublimable dyes, in particular transferable disperse dyes, on printing machine types customary in textile printing.
• transfer printing papers of the type defined above is generally known.
• the papers provided as transfer carriers are printed with aqueous printing pastes containing thickeners, which contain the suitable dyes.
• aqueous printing pastes containing thickeners which contain the suitable dyes.
• the problem arises, however, that due to the high water content of the printing pastes used for this purpose, the printed papers swell locally due to moisture absorption of the paper substance and therefore throw themselves away.
• the energy required to dry such products is also high, and corresponds approximately to the amount of water applied from the printing paste.
• the object of the invention described below was therefore to achieve the production of perfect, dimensionally stable transfer papers using aqueous-based printing pastes which avoid the negative phenomena described above.
• the new process takes advantage of the principle of using foamed dyeing liquors as printing pastes in which the foam consistency acts as a thickener. Due to the high degree of foaming of the liquors in the range from 1:10 to 1: 150, preferably from 1:40 to 1:80, it is achieved that so little water gets onto the paper that local swelling of the same no longer matters and the associated loss of dimensional stability is largely eliminated.
• the drying costs of the finished ink carrier can consequently also be reduced to the extent that the water content of the printing pastes is reduced, and environmental pollution is ruled out due to the absence of solvents.
• anionic or nonionic products with high foaming power are suitable as surfactants which allow the foaming of the liquors.
• examples include: alkylaryl sulfonates, alkyldimethylamine oxides, hydroxyalkane sulfonates, alkane sulfonate and mixtures of such compounds.
• the new process allows a dye to be applied to the transfer carrier, which is primarily a surface print, with the result that the required dye concentrations in the foamed batch are reduced.
• the amount of film-forming agent that can be reduced in this way (to prevent abrasion) and the largely dispensability of a thickener in general then lead to easier dye transfer with yield advantages in the course of the sublimation process in thermal transfer printing.
• Each is an aqueous liquor containing 80 g of the Disperse Yellow 54 dye with the C.I. 47020 or 10 g of the dye Disperse Red 60 with the CI No. 60756 or 10 g of the dye Disperse Blue 56 with the CI No. 63285, and to which 20 g / l of an alkylaryl sulfonate are added in each case, is foamed by blowing in air as a propellant in a ratio of 1:50. Fine-pored, consistent foams are created.
• the foams produced in this way from the different colors are successively printed on a web of transfer paper on a rotary printing press and this is then dried.
• the printed paper has excellent dimensional stability.

Landscapes

• Coloring (AREA)
• Thermal Transfer Or Thermal Recording In General (AREA)
• Decoration By Transfer Pictures (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=6194499

Family Applications (1)

Country Status (5)

Families Citing this family (1)

Family Cites Families (6)

• 1983
  • 1983-03-24 DE DE3310689A patent/DE3310689A1/de not_active Withdrawn
• 1984
  • 1984-02-28 DK DK121284A patent/DK121284A/da not_active Application Discontinuation
  • 1984-03-17 EP EP84102982A patent/EP0123125A3/fr not_active Withdrawn
  • 1984-03-22 US US06/592,222 patent/US4527993A/en not_active Expired - Fee Related
  • 1984-03-23 JP JP59054562A patent/JPS59179394A/ja active Pending

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