Stencils, Mesh Preparation
Screen printing consists of five elements: Stencils, squeegee, ink, printing table and substrate
"Mesh" is the specification unit of wire mesh, which refers to how many meshes there are in a length of 1 inch (25.4 mm). A millimeter is a simple unit of length. (Unit: line/cm or line/inch, 1 line/cm=2.54 line/inch)
Screen making process
Step 1: Stretching
Pay attention to tension and stretching angle (0°/15°/22.5°)
Step 2: Degreasing
Purpose: to improve the adhesion between the photosensitive adhesive and the mesh
Step 3: Coating Emulsion
Coating method, EOM photoresist film thickness um, Rz value Surface roughness.
Step 4: Exposure
UV curable emulsion
Reasonable control of exposure—exposure calculator;
Exposure method: traditional mercury lamp VS CTS
Step 5: you should wash the stencil with a power washer to remove the remaining emulsion. This will remove the areas related to the design so that the ink can pass through like with a stencil.
