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Monday, March 31, 2008

Screen Printing

Screen Printing is a special technique that creates a sharp-edged image using a spongy fabric and a stencil. The printing technique can trace back to the beginning of the 19th century and gained popularity all through in First World War for making banners and printing flags.
Screen Printing Technique
A screen made of a piece of porous, finely woven fabric including silk, polyester or nylon is prolonged over a wooden or aluminum frame. Areas of the screen are blocked off with a non-permeable material (a stencil) which in twist is a negative of the image to be printed.
The screen is placed on top of a piece of paper or fabric. Ink is placed on top of the screen, and a rubber blade is used to spread the ink regularly across the screen. The ink passes through the open spaces in the screen onto the paper or fabric below; follow by lifting of the screen. The screen can be again being re-used after cleaning. For multiple color screens printing on the same surface, the ink is allowed to dry and then the entire process is repeated with another screen and different color of ink.

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