Silk Screen printing mesh fabrics

Mesh basics 

Screen printing fabrics are woven from monofilament or multifilament yarns, most commonly polyester, although nylon and steel-wire meshes also are available. Monofilament fabrics are woven from single-filament threads. This thread construction provides predictable and controllable performance and has made monofilament polyester the dominant fabric used in screen-printing applications.

Multifilament fabrics are woven from threads that are made of multiple filaments twisted tightly together. These fabrics account for only a small portion of today’s market because the structure of the yarn does not lend itself to precision thread diameters and edge definition. Although the rough thread surface promotes stencil adhesion, the multifilament yarns are more prone to severe ghosting and are more difficult to reclaim for screen printing

Screen printing mesh usually is offered in standard white or dyed yellow colors. Un-dyed polyester threads reflect and scatter light during the exposure process, thereby causing stencil exposure beyond the image edges defined by the positive image, a condition referred to as undercutting. The result can be dot gain or loss, poor image edge definition, and decreased image resolution, particularly in images with higher halftone line counts and finer details. Yellow dyed mesh, on the other hand, absorbs the UV wavelengths of light that expose the stencil and prevents light scattering, which preserves image resolution and edge definition. The drawback to yellow-dyed mesh is that it requires longer exposure times during stencil production.

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