When sheeting carbonless paper, the sheeted stock sometimes wraps around the cutting section. Once we get past this point, we also have difficulty stacking. Do you have any suggestions?
Posted on | by Scott

It would appear that static is the cause of most problems. There are several things you can try to prevent material from wrapping around the knife cylinder:

  1. Wrap the cylinder with a felt or short nap non-conductive material.
  2. Introduce compressed air above the doctor board between the rubber covered nip roll and the knife cylinder.
  3. Ground the knife cylinder and other rolls in the machine by use of carbon brushes as used in small electric motors.
  4. Try adding a “knocker” on the knife cylinder, (a strip of chipboard taped to the back of the fly knife blade) in such a fashion that after the cut, the strip would tend to force the leading edge down into the tape section.

To help handle static prone sheets entering into the pile, try the following:

  1. Insulate the jogger blades with chip board so no metal comes in contact with the sheeted stock.
  2. If the sheeter is equipped with vibratory jog, try running with the vibrators turned off. Add “drag wires” at the pile to help knock the sheets down into the pile.
  3. Introduce a blast of compressed air under the sheets as they travel off the delivery belts.
  4. If you are running a single web of material, try running multiple webs.
  5. Move the top tapes to the outside of the machine so there is nothing for the sheets to cling to as they are delivered into the stacker.