The Rovema Packaging Blog

Tech Note #1: Short Bags, Inconsistent Bag Lengths, or Difficulty Holding Print Registration for Vertical Baggers

Aug 29, 2016 4:04:20 PM / by John Panaseny

Vertical Bagger Problem Observed – Short bags, inconsistent bag lengths, or difficulty holding print registration

Possible Reason – Film Feed Belt Slipping

Cause and Solution:

  1. Belts are dirty.
    1. Clean the belts by wiping them with a damp cloth
  2. Belts are worn. Visually inspect the belts for wear.
    1. Typically this can be seen by the belt being worn in the profile of the shape of the tube. If there is wear, then replace with new belts.
  3. Belts are misaligned.
    1. Check that the belts are parallel to the tube and to each other.
    2. Check that the belts are on the same center line of the tube from front to back
  4. Increase in film drag.
    1. Check that the film is properly threaded through the rollers.
    2. Check that a part of a film splice did not get caught between the collar and the tube and causing increased drag.
  5. Not enough pressure on the film feed belts.
    1. Increase the pressure via the method designed with your model machine,( i.e. air pressure or spring pressure)
  6. Film feed vacuum not adequate.
    1. Check that the vacuum setting is turned on as described in the operations manual.
    2. Check that the vacuum system is working correctly by ensuring that both the filter and tubes are not clogged in any way.
  7. Servo coupling is loose or broken causing inconsistent belt motion.
    1. Inside the housing of the vertical bagger, inspect the coupling and make sure it is intact and that is not broken or loose.

Example of a worn draw down belt:

 vertical_bagger_Worn_Draw_Down_Belts_with_Text_2.jpg

If none of these steps improve your situation, please contact us to schedule a service visit with our Service Manager, Gordon Thomsen, by calling 404-640-5322.

Maximizing Operational Equipment Effectiveness (OEE) for Vertical Bagging Operations

Topics: Vertical Bagger, Tech Notes

Maximizing Operational Equipment Effectiveness (OEE) for Vertical Bagging Operations