Static in converting isn’t just something you “remove.”
It’s something you create.
In my last post, I broke down why most static solutions are just band-aids.
So, what reduces static in a meaningful way?
You must attack the source.
Causes of Static:
• Film separating during unwinding
• Web sliding over rollers and idlers
• Nips, laminations, and high contact pressure points
• Dry environments (low humidity = higher charge retention)
If those conditions don’t change…
static will keep coming back — no matter how many Ionizing bars or tinsel strands you add.
What works (real fixes):
1. Control humidity
Low humidity is one of the biggest contributors. This sounds like a major investment, but industrial humidifiers are common and much cheaper than re-runs or customer complaints. It can be as simple as isolating the machine and running a humidification source. This will be most effective in upstream processes, printing and adhesive laminating often impart the most static.
Bringing your environment into a stable range can dramatically reduce static buildup — especially in winter months.
2. Reduce unnecessary contact
Every roller, every drag point = an opportunity to generate charge.
Clean up your web path:
• Eliminate unnecessary idlers / make sure idlers are spinning at the same speed as the web
• Check roller condition (worn, dirty, misaligned)
• Reduce drag where possible
3. Optimize web tension
Higher tension = more friction = more static.
You don’t always need to run as tight as you think.
4. Grounding (done correctly)
This is basic — but often done wrong.
Proper grounding of machine frames, static devices, and discharge points makes everything else more effective.
5. Place ionization strategically
Static bars aren’t useless — they’re just over-relied on.
They work best:
• Immediately after charge is generated
• Before critical operations (like stacking or opening)
Not randomly placed and expected to fix everything.
The reality:
If you’re only reacting to static, you’ll always be fighting it.
If you reduce how much you generate in the first place,
everything downstream gets easier:
• Less operator frustration
• Better pouch handling
• Fewer jams and defects
If you’re looking to reduce static in your process, you don’t have to guess. Invest in a static meter and monitor the static before and after the problem areas mentioned above, if you see a spike, install the appropriate countermeasure. If your detecting it in a specific process, it was likely imparted in the material upstream, focus on the process that’s generating the static not the process that’s dealing with it.
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