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Screen Printing Machines

Screen Printing Machine

Battery Screen Printing Machine

VSP 1824 Screen Printing Machine

Pad printing is an indirect method of printing, a combination of offset & gravure printing process. Plate system is like gravure & printing system is like offset, in pad printing, flat plate carries an image. A rubber blanket picks up image from the plate & transfers it on the substrate. Similarly a solid mass of rubber called pad, picks up ink from the etched plate & prints on the substrate hence the process is known as pad printing.

Theory of pad print :

The ink is spread over the plate to fill up the image on it. Doctor blade cleans the plate leaving ink in the etched portion. The upper surface of the ink film is exposed to air. Thinner in the ink starts evaporating from the exposed surface making ink tacky. The silicone rubber pad come down & rolls on the image area on the plate. It goes up with ink film on it. Because of the tacky ink film pad is able of pick up ink from the etched portion. Another side of ink film is now exposed to air & starts evaporating thinner from it. Ink becomes tacky and sticks to the substrate as pad come up after rolling on it.