Label stock entering into the label applicator can become highly charged on the lead and trail ends of the label.
This will result in:
- The label wrapping around the rotary knife
- Glue being applied to the vacuum drum
- Labels sticking to the vacuum drum and not the bottles
Neutralizing the web prior to entry to the applicator will reduce the charges sufficiently to prevent mis-feeding and subsequent line stoppages.
The drawing shows two 915 bars mounted before the nip roller.