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Description of mesh opening
Mesh opening 'ω' is the spacing between adjacent warp or weft threads, and is measured perpendicular to the plane of the mesh.
Mesh opening governs:
the maximum particle size to be used in a screen printing ink
the level of printed detail in line and half-tone artwork
ink release character
the thickness of the ink volume
For optimum ink transmission the particle size p of the screen printing ink must be less than the mesh opening by at least a factor of 0.3.