2, stamping line.In printing, the ink plate extrusion ink and silk screen printing, silk screen printing plate and the substrates to form a contact line, called a stamping line.The line in the scraping plate edge, countless embossing lines printing surface.Achieve the embossed line is very difficult, because printing stroke is a dynamic process.
3, silk screen printing machine working principle.Screen in a commonly used hand flat screen printing machine, for example, can be to make the following description: screen printing machine working principle of the drive gear transmission power, allows the movement of the scraping plate extrusion ink and silk screen printing, silk screen printing plate and the substrates to form a stamping line, N1 and N2, because the screen has tension force F2 scraping board, for back to stretch the silk screen plate except the embossed line is not in contact with substrates, inks in scraping plate under the action of the extrusion of F1, through the mesh, from the movement of the stamping line printing on substrates.In the process of printing, silk screen printing plate relative motion with scraping board, extrusion and back stretch F1 F2 with synchronous mobile screen under the back stretch, the rallies and substrates from contact, lest the print ceng dirty.Namely the silk screen printing trip, constant in the deformation and the springback.Scraping board at the completion of a one-way from substrates with silk screen printing, after printing to return back to the ink at the same time, a printing cycle is completed.The top of the back after the ink printing substrates with silk screen printing plate opposite distance is called version or net margins, generally should be 2 ~ 5 mm.Manual printing, the operation of the workers' skill and proficiency in a direct impact on the formation of stamping line.Screen printing workers in practice has accumulated many valuable experience, the concrete can be summarized as six, namely guarantee linearity in the movement of scraping board, uniform, isometric, equalizer, in neutral and vertical side.That is to say, when printing scraping board should be straight forward, not sway;Not slow, quick, before the former fast after slow or slow and fast;To the ink plate Angle should remain unchanged, paying special attention to overcome the common fault of the tilt Angle increase gradually;Printing pressure to maintain uniform;Keep scraping plate and net box inside the distance on both sides of the equal;To keep vertical ink plate and frame.