The concept of pad printing machines, pad printing and process introduction
One of the pad printing, belongs to the special printing way.It can be on irregular heterosexual object surface printing text, graphics and image, are now becoming an important special printing.Text and pattern on the surface of the cell phone, for example, is to use this way of printing, and computer keyboard, instruments, meters and other many electronic products surface printing, are finished by pad printing.

     Pad printing technology is very simple, using steel (or copper, thermoplastic plastics), gravure surface pad printing head, made use of silicone rubber materials will dip on the gravure printing ink to the surface of the pad printing head, and then to need the object surface can be printed text, pattern, etc.Moving printing machine is the type of pad printing technology in the 80 s just to special printing technology in China, because of its product in small area on the surface of the concave and convex printing on has very obvious advantage, make up for the deficiency of the screen printing process, therefore, is developing very fast in recent years.In the early 90 s, with the further opening of China market, a large number of electronic, plastic, gifts, toys and other traditional industries as the main body of the foreign companies to enter the Chinese market in succession, pad printing and screen printing technology as the main way of decoration is get supernormal development, according to incomplete statistics, pad printing and screen printing technology in the application of the industry reached 27%, 64%, 51% and 27% respectively.Pad printing refers to the substrates for irregular shaped surface (such as instrument, electrical parts, toys, etc.), use copper or steel intaglio, via the silicone moulds half spherical shaped pad printing head, in order to pressure to the ink transfer printing layout to complete the transfer printing on substrates.

       Pad printing machine is mainly composed of plate device (including ink device), scraping blade, rubber pad printing head (usually the silicone material) and printing, etc.

      On the etching plate (steel plate) with ink a lot of methods.Ink painting on etching plate first, and then use a scalable scraper excess ink scrape.At this time, stay by erosion in the area of the printing ink solvent volatilization and form the surface of the gel, and then glue head down to etching plate, ink absorption.

       Ink absorption and printing products: rubber suction head on etching plate big department after the ink on the rise, at this point, this layer of ink and volatile a department, a department left wet ink surface more objects to be printed with glue together.The modelling of rubber head to produce a rolling action, to row etching on the surface of the plate and ink excess air.

       In the process of producing ink and glue head with ideally etching plate all the ink transfer printing to be printed on the object, in the process of producing (close to 10 microns or 0.01 mm thick ink adhesion is transfer to the substrate) rubber head printing easily affected by air, temperature, static size, and so on.If from etching plate to transfer printing rubber head, to the matrix of the whole process, volatile speed and dissolution rate control in equilibrium state, so is a successful print.If evaporate quickly, ink is absorbed before it has dried up.If evaporation is too slow, has not yet formed colloidal ink surface, not easy to make rubber head and substrate adhesion.