Conductive Roll Covers: Carbon-Reinforced PTFE
A conductive roll cover from Fluoron is a static-dissipative, carbon-reinforced PTFE sleeve engineered for converting lines, flexible packaging, and solvent-handling environments where static buildup ruins yield. Each conductive roll cover is custom heat-shrunk to your roller and individually quoted.
Carbon-reinforced conductive PTFE heat-shrink roll covers from Fluoron’s Fluoro-Stat system. Dissipates static charge while delivering the non-stick release and chemical resistance of standard PTFE. Engineered for flexible packaging, converting, solvent processing, and any line where uncontrolled static is causing product defects, fire risk, or equipment damage.
Why conductive PTFE for your rolls
Standard PTFE is an excellent insulator, which is exactly the problem when your line is generating static. Web flutter, dust attraction, ignition risk near solvent vapors, and finished product defects all come from charge that has nowhere to go. Conductive PTFE solves it by adding controlled carbon reinforcement that gives the cover a defined surface resistivity, dissipating charge to ground while keeping the release performance you came to PTFE for.
- Your line is generating static that causes web flutter, edge curl, or dust attraction
- You’re running solvent-based coatings or printing inks where ignition risk is real
- Finished product defects are tied to electrostatic discharge during converting
- You need PTFE-class release plus controlled conductivity in a single cover
- Standard tinsel bars or active static eliminators are not enough or are too maintenance-heavy
Fluoro-Stat conductive PTFE specifications
| Material | Carbon-reinforced PTFE |
| Surface resistivity | 10^6 to 10^9 ohms/square (static dissipative range) |
| Maximum continuous service temperature | 500°F (260°C) |
| Appearance | Black, carbon loaded |
| Coefficient of friction | 0.05 to 0.12 (static), near PTFE class |
| Chemical resistance | PTFE class, resistant to virtually all industrial chemistries |
| Release performance | Near-PTFE non-stick release |
| Install method | Heat shrink onto existing roll body |
| Roll diameter range | 5″ minimum, no upper limit, custom sized |
Where conductive PTFE roll covers fit best
- Flexible packaging converting lines where film static causes web flutter or layup defects
- Solvent-based printing and coating where electrostatic discharge near flammable vapors is a fire risk
- Dust-sensitive processing lines where static-attracted contamination is a quality problem
- Electronic and circuit film handling where ESD damage to product is a real cost
- Dry solvent process lines in pharmaceutical, food, or specialty chemical manufacturing
If static is not an issue on your line, look at standard PTFE roll covers (Fluoro-Wear) for the same release and chemical resistance without the conductive component. For visibility through the cover, FEP roll covers (Fluoro-Clear) are the answer. For more depth on how static control works in fluoropolymer covers, read our static control guide.
Anti-static vs static dissipative vs conductive
The terms get confusing fast. Here is how they relate, and where Fluoro-Stat sits.
- Anti-static usually means a surface that resists building a charge in the first place, often a coating treatment. Resistivity is usually 10^10 to 10^12 ohms per square.
- Static dissipative means a surface that bleeds an existing charge to ground at a controlled rate, typically 10^6 to 10^9 ohms per square. This is what Fluoro-Stat delivers and what most production lines actually need.
- Conductive means a true electrical conductor, typically below 10^6 ohms per square. Useful for grounding paths but overkill for most static control.
We call Fluoro-Stat anti-static because that is what most engineering and production teams search for. What a converting, film, or solvent line needs is a cover that drains charge fast enough to prevent the problem without becoming a true conductor that creates new ground-path issues.
How does Fluoro-Stat compare to other static control?
| Approach | Effectiveness | Drawbacks |
|---|---|---|
| Ion bar or active ionizer | Neutralizes charge in the air near the web | Does not address charge on the roller surface; needs power, maintenance, and positioning |
| Grounding brushes or static straps | Dissipates charge while contact holds | Wear out, need maintenance, can contact unevenly on a spinning roller |
| Standard FEP sleeve | None, makes static worse | Insulating surface collects charge |
| Unfilled PTFE sleeve | None, also insulating | Same problem as FEP; adds wear resistance but not static control |
| Fluoro-Stat conductive PTFE | Stops charge buildup at the source | Higher unit cost than standard FEP |
For dry roll positions where static is a known or suspected problem, Fluoro-Stat is a passive, maintenance-free answer at the sleeve surface. The carbon filler also adds abrasion resistance, about 10 times the wear life of FEP.
Frequently asked
What is a conductive PTFE roll cover?
A conductive PTFE roll cover is a heat-shrink tube of PTFE that has been reinforced with controlled carbon loading to give the surface a defined electrical resistivity. The cover dissipates static charge to ground while maintaining PTFE-class non-stick release and chemical resistance. It is the right answer when standard PTFE’s insulating property is creating static problems on your line.
What is the surface resistivity of Fluoro-Stat?
Fluoro-Stat falls in the static-dissipative range, typically 10^6 to 10^9 ohms per square depending on grade. That is the range that bleeds off static charge to ground without being a true conductor. We can spec specific resistivity targets for ESD-critical applications. Specifications and test documentation available on request.
Will conductive PTFE eliminate the need for tinsel bars and active static eliminators?
In many applications, yes. Fluoro-Stat handles continuous low-to-moderate charge generation at the roller surface, often replacing inline tinsel bars and reducing the load on active static eliminators. For high-velocity webs and heavy static loads, customers often pair Fluoro-Stat with one upstream active eliminator instead of multiple maintenance-heavy stations.
Is conductive PTFE FDA compliant?
Fluoro-Stat’s carbon loading means it is NOT FDA-compliant for direct food contact. For food contact applications, use standard Fluoro-Wear PTFE or Fluoro-Clear FEP, both of which are 21 CFR 177.1550 compliant.
Can Fluoro-Stat be installed onsite?
Yes. We mobilize installation crews to customer sites for large-diameter rolls, in-place assets, and converting lines that cannot easily be torn down. Tell us the roll location and accessibility and we will quote shop versus onsite.
How long does Fluoro-Stat last in service?
Service life depends on web abrasion, temperature, and chemistry. Typical Fluoro-Stat installations on flexible packaging converting lines run 18 to 48 months between replacements. The carbon reinforcement does not measurably reduce wear life vs standard PTFE. We track each installation to inform future specs.
Spec a Fluoro-Stat conductive PTFE cover
Tell us the roll dimensions, web speed, chemistry, and what static problem you are trying to solve. We will engineer the right Fluoro-Stat grade and quote within three business days.