Manufacture and use of heat transfer printings
AssigneeMichael Huber Munchen, GmbH
InventorsDieter Clausen, Albert Uhlemayr
Life of this patent
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Abstract
Heat Transfer prints are made by offset printing using a UV curable ink containing subliminal dyes printed onto a heat transfer backing, followed by rapid curing using UV light. The heat transfer prints are then used for dying fabric by applying the heat transfer print to the fabric, heating the print and thereby causing the dyes to sublimate and thereby transfer from the heat transfer print to the fabric where dying of the fabric occurs.
Claims11
The new use of a printing ink for thermo-transfers, said ink consisting essentially of at least one sublimable dye, at least one rapidly UV hardenable binder having polymerizable ethylenic unsaturation and a UV polymerization initiator, comprising printing said ink by the offset or letter printing method onto a heat-transfer backing, hardening the binder with UV radiation, and subsequently heat-transferring the print to a textile fabric.
In a method of heat-transferring an ink design from a thermo-transfer printing paper to a flexible substrate by the use of heat, the improvement wherein the transferred design has been formed by printing an ink comprising a subliminal dye and a UV hardenable binder having polymerizable ethylenic unsaturation, followed by applying UV radiation to the printed design in the presence of a UV polymerization initiator to harden the printed design.
Dependencies are inferred from the claim text.