Transfer printing
AssigneeL. B. Holliday & Co. Limited
InventorsCyril E. Vellins, Leonard F. Dixon
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AssigneeL. B. Holliday & Co. Limited
InventorsCyril E. Vellins, Leonard F. Dixon
Estimating the term…
The invention relates to the fixing of disperse dyestuffs which are printed by transfer from support webs onto fabric webs. Fabrics which are cellulosic or part cellulosic are treated with suitable resins which are uncured or part cured and are chosen to have hydroxymethyl, alkoxymethyl and/or aldehyde groups capable of reacting with corresponding reactive amino, hydroxy and/or hydroxyalkylamino groups of the dye or dyes used in the printing inks. The heat treatment for transfer of the print from the support to the textile fabric is effected under such conditions of temperature and time that either curing or end curing of the resins takes place with simultaneous fixing of the dyes onto the textile fabric through reaction between the reactive groups of the dyes and corresponding unreacted end groups of the resins.
A method of transfer printing in which printing is effected by transfer from a paper support web printed with an ink formulation containing at least one sublimable dyestuff suitable for transfer printing and having one or more amino, hydroxy or hydroxyalkylamino first reactant groups in the dyestuff molecule, or any combination thereof, onto a textile fabric composed of a natural and/or synthetic cellulosic material alone or in a blend with at least one natural and/or synthetic non-cellulosic material, the textile fabric having thereon a curable resin which is at least partly uncured and contains one or more hydroxymethyl, alkoxymethyl or aldehyde second reactant groups capable of reaction with the first reactant groups of the dyestuff or dyestuffs, the transfer printing being effected at a sufficiently high temperature and for a sufficient period of time to effect both a sublimation transfer of the sublimable dyestuff to the textile fabric and either a curing or an end-curing of the resin with simultaneous reaction between said first and second reactant groups to fix the dyestuff onto the cellulosic or part cellulosic textile fabric.
Dependencies are inferred from the claim text.