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|Mesh Count:||77mesh/cm||Material:||100% Polyester|
|Printing:||Silk Screen Printing||Monofilament Style:||Yes|
PCB printing material 100% polyester screen mesh
Warp/weft elongation:average and low
Much high tensile strength
Perfect network version of the adhesion
printing mesh of printed circuit board PCB /PCB printed screen printing mesh
Printed circuit board artwork will either be fine lines and intricate graphic features (pattern printing), floods with small squares or circles (solder mask printing) or fine text (legend printing). Because of the required pattern, solder mask and legend artwork is typically similar from one PCB application to another.
For optimum image results, it is recommended to stretch the mesh at an angle from 15 to 30 degrees (mesh is stretched in the clamps at 90 degrees, and the frames are angled under the mesh). Mesh is typically tensioned to 28 to 30 N/cm (0.970-0.910 mm), and should relax for 48-hours before exposure.
Screens are usually coated with solvent resistant emulsions that have a solids content of 30% or greater. For optimum image results, the target EOM for PCB screens is 10% – 30% of the mesh thickness. The Rz of the stencil should be less than 5 microns. Artwork is exposed by conventional exposure techniques, using films that are 0.18 mm thick and have a resolution of at least 6000 dpi.
It is common that screens used for PCB printing are reclaimed and used again; however, screens that have been reclaimed are used on jobs that are not critical.
Sales Maganer: Sara