Sheet Stabilization
Full sheet width or partial foils; static or dynamic designed sheet stabilizers are used to control sheet flutter, floppy edges, sheet spreading or simply as an alternative to an idler roll to support the sheet. Sheet Stabilizers have been successfully used to tackle control issues on machines with speeds up to 6,000 FPM and sheet widths up to 240″.
- AIRTHERM Sheet Stabilization systems are designed to support the sheet from the Yankee dryer to the reel.
- Stabilizers can be retracted to allow easier access for operation and maintenance personnel.
- Stabilizers can be “static” and utilize the sheet speed to operate or “dynamic” with auxiliary air supply to ensure proper operation at slower line speeds.
- Sheet spreading can be accomplished to prevent wrinkles leading into the calendar nip or onto the reel; replace Mount Hope bowed rolls.
FAQS
Sheet stabilization refers to controlling the movement of the paper web as it travels through the drying and production process. Maintaining a stable sheet minimizes fluttering, reduces breaks, and ensures consistent quality.
- Prevents web breaks – Reducing vibrations and fluctuations in airflow keeps the sheet stable.
- Improves drying efficiency – Ensuring proper contact with drying cylinders optimizes heat transfer.
- Enhances runnability – A stabilized sheet flows smoothly through the machine, reducing downtime.
- Maintains sheet quality – Avoiding wrinkles, uneven drying, or tension issues leads to better product consistency.
Stabilization systems use air management solutions and mechanical supports to maintain web control:
- Airfoil Stabilizers – Generate controlled airflow to keep the sheet in position.
- Vacuum Boxes – Use negative pressure to hold the sheet against rolls, preventing lift-off.
- Pocket Ventilation – Ensures even air distribution to avoid turbulence near the sheet.
- Web Guide Systems – Actively monitor and adjust sheet alignment throughout the process.
- Inconsistent airflows – Poor ventilation or pressure variations disrupt web movement.
- Improper pocket ventilation – Trapped moisture and air currents can cause flutter.
- Speed fluctuations – Rapid acceleration/deceleration can lead to tension imbalances.
- Drying inconsistencies – Uneven moisture removal affects web stiffness and control.
A well-designed Sheet Stabilization System works in conjunction with:
- Pocket Ventilation – Ensuring balanced air distribution in the dryer section.
- Paper Machine Hood Systems – Regulating airflow to minimize turbulence.
- Web Tension Control – Adjusting mechanical forces for smooth handling.
Airtherm specializes in sheet stabilization solutions that integrate with industrial air systems, ensuring smoother web handling, improved efficiency, and better product quality.