Sign & Digital Graphics

October '19

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58 • October 2019 • S I G N & D I G I T A L G R A P H I C S The fixation processes are like those used for reactive dyes. After steaming, the printed fabrics are washed to remove excess dyes. Disperse dyes are used specifically for polyester fibers. You may have heard this referred to as dye-sub or dye sub- limation, or even transfer printing. Printing with disperse dyes onto polyester fabric can be achieved in two ways: printing onto a specially coated transfer paper substrate then, by applying heat and pressure, the print is then transferred onto the polyester substrate or by printing a specially formulated ink directly onto the polyester fabric then applying the heat fixation process. During heat fixation or the transfer process, the dye changes from a solid to a gas (sublimation) and enters the polyester fibers that have expanded from the heat. TEXTILE MAIN INK TYPES: • Dye • Reactive • Acid • Disperse/Sublimation dyes • Pigment

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