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| What |
| 【author/from】webmanager 【time】2015/1/19 【count】4840 |
| Screen printing consists of five elements, namely screen printing, squeegee blades, ink, printing units and substrates. Screen printing is a basic principle: the use of graphic screen printing ink through the mesh part, non-graphic part of the basic principles of impervious mesh printing ink. Pour on the screen printing plate at one end of the ink, a certain pressure is applied with a doctor blade in the printed ink on the screen plate portion, while moving towards the other end of the screen printing forme. Ink is squeezed from the mesh scraper graphic part of the move to the substrate. Due to the viscosity of the ink leaving the imprinted fixed within a certain range, the printing process and screen printing squeegee always substrate and line contact, the line of contact with the moving blade is moved due to the screen printing plate and the substrate maintain a certain gap between such printing screen plate when the tension generated by its own reaction force of the blade, this reaction is called resilience. Since the return spring force, so that the screen plate and the substrate was movable only in line contact, and other portions of the screen plate and the substrate to the disengaged state. Ink and screen broken campaign to ensure accuracy and avoid printing size rub dirty substrates. When the blade scratched lifted after the entire layout, but also lifted the screen plate and ink scuffing back to the initial position. So far as a printed itinerary. |
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