Foam printing process
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Foam printing refers to a printing method in which a microsphere foaming ink is screen printed on paper or fabric and heated to obtain a ridge graphic or a Braille reading. The graphic has a good three-dimensional effect, mainly for product decoration, book binding, Braille reading, clothing printing and so on. The specific printing process is as follows, the draft is made - the screen version - foam printing - hot stamping - finished product.
Manuscript production: The computer designed and produced the required graphic, and printed it on a transfer paper or transparencies through a laser printer.
Making a screen: using 80-120 mesh screen, water-based photosensitive offset, and then using the prepared manuscript on the plate-making machine to compact the photosensitive U version.
Printing foaming ink: use the foaming pulp to obtain the desired color, then print it onto the substrate and dry it for hot stamping.
Hot stamping: There are several hot stamping methods, one is hot stamping with a heat transfer machine, and the other is hot stamping with an iron. The temperature of the two hot stamping methods is controlled at 120-140 ° C. After a few seconds, the printed image is printed. The ink layer is raised. It should be noted that in hot stamping, a piece of flannel should be placed on the printed object to turn over the back stamping. It takes only a few seconds, and the long time will affect the bulging effect.