use of sulphur-free additive at screen-making process enables non-existence of brittleness of screens during/after the rounding and polymerization process. Brittleness is the main cause of screen crack and damage on the rotary printing machine win operation. A convenient way to test the brittleness is the so-called "lighter test": a piece of screen sample burnt by lighter flame for 10 seconds, bend the screens sample to see if it breaks at the burnt spot.
Can endure 6-7 times stripping by waterjet or LEN
