slitting knives

Circular Slitter Knives: A Complete Selection Guide Circular slitter knives are small components with an outsized influence on production. In a paper mill, flexible-packaging plant, adhesive-tape converting line, battery-foil facility or metal service center, the blade is where machine geometry, material behavior and product quality finally meet. A knife that is sharp but dimensionally unstable can create the same commercial problems as a visibly dull knife: burrs, dust, web breaks, edge wave, poor winding, frequent stoppages and rejected rolls. That is why the most useful way to select circular slitter knives is not to ask, "Which steel is hardest?" or "Which blade lasts longest?" The better question is: Which knife material, geometry, tolerance and slitting configuration can produce the...