Category: Cutters

I am having trouble getting a clean slit edge. How can I solve this problem? The first thing to do is to make sure the top slitter blades and bottom rings are in good condition. If the blades have nicks or are dull to the touch using the face of your thumbnail, replace the slitters. […]

I am getting variation in sheet length. What should I do? The most often asked troubleshooting question concerns sheet length variation. Troubleshooting these problems can be frustrating but the following are some of the basic things to check: If the sheets are always short:  Check for slippage at the nip roll. This can be due […]

When I slit and run two piles, one sheet is square and the other is out of square What adjustments can I make to address this? Be certain there is enough tension to keep the web taut and the slitters are set properly. Watch the flow between the pull roll section and tape take away […]

I’m having trouble running 0.024” (400 gsm) thick board on my stationary bed knife cutter. The leading edge has a lip or “bead” on it and the trailing edge is fuzzy. What can I do to fix this problem? Both problems are caused by material flow through the knife area and knife cut angles. There […]

I have trouble maintaining edge trim at the slitters. How do I insure a steady ribbon of edge trim? Slitter Condition: To determine cut quality, both male and female knives should be either new or resharpened. Sharp knives maintain a consistent cut necessary for slitting a narrow continuous stream of light weight material. Slitter Set-up: […]

What causes a crescent or bow-shaped cut? There are several possible sources for this problem. First, check the bed knife to make sure it is straight across the entire surface. This is done by measuring from the edge of the knife to the back of the knife in a half dozen evenly spaced intervals along […]

When taking a side trim, I sometimes find one side of the pile builds up higher than the other side. Why does this happen? Assuming the caliper of the material doesn’t vary across the machine, this condition usually indicates a slit quality problem. Check for improper penetration of the upper slitter blade, inadequate side pressure […]

We don’t have a squareness problem when sheeting a 50” wide roll. However, when we slit the same roll into 2 piles, 25” across, one sheet is square, while the other is not. What is causing the sheets to be out of square? Check your draw roll section to make sure the cutter’s draw drum […]

I notice length variation when I sheet material. What can I do to prevent short sheets? Short sheet lengths are usually associated with excessive brake pressure at the roll stand or inadequate nip roll pressure. See if less brake and heavier nip at the cutter’s squeeze roll remedies the problem. The surface of draw drum […]

When slitting coated paper, the sheets have dusty edges. What can be done to minimize this problem? Slitter dust that accumulates at the center slit is attributed to misadjusted or worn slitter blades. check the settings and blade condition, replacing the top knives or bottom rings as required. Slitter dust that occurs on the outside […]