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| sublimation mug, coating mug,color changing mug 2007-05-06 17:36:26 Author:陈优忠
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Dye sublimation is a process that uses a special heat sensitive dye to print graphics and text onto paper. This is called a transfer. The paper is then placed on a sublimatable item and both are placed into a heat press for about 20~45 seconds at 180-230 degrees.
When the cycle (sublimation) is completed, the image on the paper has transferred to the item and has actually become a part of the surface. If you run your finger across the surface of a sublimated plate you will feel nothing.
The reason for this is that sublimation is always done on a polyester, polymer, or polymer coated item. At high temperatures, the solid dye converts into a gas without ever becoming a liquid. The same high temperature opens the pores of the polymer and allows the gas to enter. When the temperature drops, the pores close and the gas reverts to a solid state. It has now become a part of the polymer.
For this reason, true dye sublimation cannot be done on natural materials, like natural fibers and non-coated materials have no "pores" to open.
Inkjet printers use a liquid filled inkjet cartridge that has a suspension of the dye in it and requires transfers to be printed on special coated inkjet paper. The printer should be dedicated to sublimation, as the cartridges cannot be easily or cheaply switched with regular cartridges, for regular document printing. |
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