Screen printing mesh improving method

Abstract

The invention belongs to the technical field of silk-screen printing, and discloses a screen printing mesh improving method. The screen printing mesh improving method comprises the steps that a mesh is cleaned to remove oil stains on the surface; the mesh is coated with a layer of glue in a spraying mode; and the sprayed mesh is cleaned. In order to protect mesh holes of the mesh, an automatic spraying mode is selected, and the selected glue is silica gel or UV glue or epoxy resin adhesive. According to the method, crossed parts of metal wires of the mesh can be fixed, and the situation that the printing quality is affected due to the fact that the metal wires are staggered due to pressure is prevented.

Description

Technical field [0001] The invention relates to the technical field of screen printing, in particular to an improved method of screen mesh. Background technique [0002] Screen printing is a common printing process in the field of flexible circuit board technology. The ink can be printed on the surface of polyimide substrate through screen printing. Common screen printing is made by photosensitive materials using exposure technology, so that the graphic part on the screen printing screen forms a transparent mesh, and the non-graphic part is blocked by photosensitive glue and cannot be transparent. The commonly used screen in flexible circuit boards is stainless steel wire The net, the screen is fixed around the screen frame, and has a certain tension. During the printing process, the ink is spread on the surface of the screen, and the squeegee presses and moves along the printing direction during printing to print onto the surface of the substrate. [0003] The weaving method of ...

AI Technical Summary

Problems solved by technology

But this will produce another problem: first, the metal wire at the intersection is squashed, which will reduce the opening ratio of the mesh grid, and then reduce the ink penetration; the second is that the metal wire at the intersection is squashed, changing The wire diameter of the mesh is reduced, which weakens the strength of the metal wire of the mesh, and it is easy to cause the metal wire to break due to excessive pressure. Long-term printing wear will cause the metal wire to break prematurely, reducing the use of the screen plate life