What is the principle of screen printing
Screen printing consists of five elements constitute:
That screen printing plate, squeegee scraper, ink, printing table and substrates
Screen printing is the basic principle:
1.By screen printing plate graphic part of the ink through the mesh, non-graphic part of the mesh of the basic principles of impervious ink printing.
2.Pour printing ink on one end of the screen plate, put some pressure on with a squeegee blade in screen printing ink version of the site, while the other end of the plate toward the screen to move
3.Scraper squeezed the ink is on the move from the graphic part of the mesh to the substrate.
4.Due to the viscosity of the ink leaving the imprinted fixed within a certain range, during the printing squeegee and the screen printing plate always substrate line contact, the line of contact with the moving blade moves, since the screen printing plate and the substrate that the gap between, such that when the stencil printing by itself produces tension on scraper reaction, this reaction is called spring back.
5.Since the return spring force, so that the screen printing plate and substrate was only mobile line contact, while the rest of the screen plate and substrates for the disengaged state.
6.Ink and screen fracture movement to ensure the dimensional accuracy and printing substrates avoid smearing.
7.When the blade scratched after lift the entire layout, but also to lift the screen plate, and the ink scuffing back to the initial position. So far as a printed itinerary.