Details about mesh distortion
Printing with snap-off necessarily distorts the screen, even before consideration of the mesh shift caused by the squeegee action. The change or distortion of the impression depends primarily on the distance between the stencil and the printing substrate (snap-off).
Internal screen dimension: 1000 mm
Mesh distortion as a consequence of the distance between the end of the squeegee and the inner frame edge
Mesh distortion over 1000 mm | ||
50 mm / Squeegee length 900 mm | 0,180 mm | |
100 mm / Squeegee length 800 mm | 0,090 mm | |
150 mm / Squeegee length 700 mm | 0,060 mm | |
The squeegee rubbing on the mesh can cause additional distortion in print direction of the printed image.
Register inaccuracies are influenced by:
ink compounding, viscosity and weight
squeegee pressure
squeegee shape and position
squeegee hardness
printing speed
Mesh distortion «V»,
front view:
A = 1 mm V = 0,008 mm
A = 2 mm V = 0,032 mm
A = 3 mm V = 0,072 mm
Mesh distortion «V»,
side view:
A = 1 mm V = 0,002 mm
A = 2 mm V = 0,008 mm
A = 3 mm V = 0,018 mm