Reduce Blade Wear, Increase 
Profits

Acute grind angles are also prone to chipping and burring because less metal is present at the extreme tip edge and the contact pressures between the slitters cannot be supported.

Solution—Try to use as little cant angle as possible to achieve the nip point, because the greater the angle, the shorter the blade life. In packaging (films and laminates), the ideal angle is typically between 0.25 to 0.50 degrees.