Commercial Applications of Digital Sublimation Printing
There are quite a number of applications for dye sub printing on fabric/cloth, most of which are commercial at some level, although some products like shirts end up on retail store display racks and shelves.
Commercially, though, where an end user is using the actual printed fabric, there are still a lot of applications we can talk about. However, for those who are new to this discussion, let me first re-explain what dye sublimation printing is and how it's done. I enjoy this topic, and for me it keeps it fresh in my mind to go over it every month or two, and that way, you don't have to go back in our blog to learn about how it's done and some of the science behind it.First, let me say that someone or several people who developed this type of printing were/are way smarter than I am. I mean, who really sits around and thinks, "Gee, if I combine heat and pressure and dye, I can make some seriously beautiful printing!"It's a bit like who thought of making computers using silicone? And really, what is silicone, and how could anyone even think about using it to create this laptop that I'm typing this article on? Fortunately for you and I, though, we don't have to invent or re-invent dye sub printing, or really even to improve on it (although that is being done as well by more people who are way smarter than I am!).
However, I do understand the hows and whys of digital dye sublimation fabric printing, and I am happy to share this information with anyone who asks.
First, and while I don't know why "dye" is different than "ink," and am personally suspicious that the designation is simply to distinguish the difference in printing methods, the dye used in sublimation printing is different than the ink used in digital printing. Something in the chemistry of sublimation dye allows it to become a gas during the printing process.
The dye set also has a different color designation than digital printing inks, which is the standard CMYK (cyan-magenta-yellow-black) ink set. Dye inks use a CMYO (same first three with an overprint clear), in which the clear, when activated by heat an pressure, creates the black component in this type of printing.The dye is printed using a digital printer which prints the image in reverse on a dye sublimation transferpaper. Once printed, this paper is matched up to a piece or roll of polyester material (or other oil-based fabric - natural fibers like cotton and linen will not work with this print method), and fed slowly through a set of heated rollers at around 400°F. The pressure combines with the heat to turn the dye into a gas, while simultaneously opening the pores of the cells of the fabric, thus infusing the dye into the open pores.
As the fabric cools, the porous cells close, trapping the dyed colors into the cellular structure of the fabric. This is why dye sub printed materials are resistant to fading compared to other types of printing.
Another feature of this type of printing is that because the dye turns gaseous, it creates a continuous tone print compared to other types of "dots per inch" printing, and is more like a photograph than a digitally printed banner or sign. This is one of the reasons I'm a huge fan of dye sublimation. The quality of the print and the durability of the fabric is unsurpassed in the advertising industry, in my view. This is not to say that I don't like digital printing. I love digital printing, but it's just a small step below dye sub print, although the substrates are usually different, so they comprise different areas of print than an inkjet printer does.
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