Pad printing, belongs to one of the special printing way, can print all kinds of words and patterns on irregular products surface, can single color printing, can also double-color or multi-color printing, process is relatively simple, does not need other process, now the application of printing technology is very much, such as cups, keyboards, pens etc., and all kinds of electronic products surface, we can use pad printing.
Printing technology first appeared in Europe, used to print the dial of the watch, which was introduced into China in the 1980s, because it can print in a small area, irregular concave and convex surface products, which has great advantages.With the continuous development of China's manufacturing industry, the application of printing technology is more and more widely used, electronics, toys, plastic and other products surface printing using printing technology accounts for about 50%.
Use in printing ink has appeared 2000 years ago, our country is the first to use ink, as early as the western Han dynasty began to use ink, the ink can write on the bamboo slips, some substances and the ink, the movable invention of the northern song dynasty printing improved the use efficiency of the ink, the 15th century German soot and linen oil mixed into contemporary ink, in the 19th century with the development of various dyes can make a variety of colors of ink.
How the pad printing works
Printing graphic content need to be etched on the steel plate, the steel plate after cleaning evenly coated with a layer of photosensitive glue, affixed with graphic printed film, in the ultraviolet exposure without graphic area will become hard, washed with developing water to let the film graphic presented on the steel plate, pour into the corrosion liquid let graphic corrosion on the steel plate depth is not more than 0.5 mm.You can also use laser to corrode the plate on the text.Transprint head is made of elastic silicone, the shape is round, rectangular and square, this shape can better contact with etching plate and be printed products, on the parallel steel plate graphic transfer to different shapes of the product, the pressure and surface of the process of adhesive head deformation, to make the transfer text deformation will choose different soft and hard, size, to adapt to the rubber head deformation to achieve the ideal effect.Moving printing is through imaging principle, the ink painted on the etching plate, a telescopic scraper to scrape off the excess ink, the remaining ink will stay in the etching plate pit, made of silicone material of moving head, the ink inside the concave plate to the surface of the moving head, and then to move the product surface of the pressure will appear on the concave plate.Ink used for printingWe often find that the product we buy with a few times on the surface print is blurred or all off, that is, affect the beauty of the product will also doubt the quality of the product.
