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BOPP Film
Film extrusion lines present a special set of challenges to roll cover manufacturers. Homogeneous surface finishes, high release properties and tight dimensional tolerances require compounding and manufacturing expertise.

Engineered compounds from Stowe Woodward address the needs of the film extruder with a family of cover compounds that deliver good surface finishes absent of voids or occlusions and with the necessary release properties for smooth film processing.

High abrasion and temperature resistance ensure that the performance properties remain viable for the life of the cover.

Casting Water Removal
A pressure roll that wipes excess water from the film surface as it exits the casting cooling bath.

To maintain even wiping pressure over a long cycle life, the cover must exhibit excellent wearability. It must also resist moisture migration in the wet environment.

Casting Water Removal
A pressure roll that wipes excess water from the film surface as it exits the casting cooling bath.

To maintain even wiping pressure over a long cycle life, the cover must exhibit excellent wearability. It must also resist moisture migration in the wet environment.

MDO
The Machine Direction Drive roll is the mating roll to the high speed film stretching and orienting roll.

The high-performance cover in this position exhibits excellent wear resistance and retains its hardness and other physical properties in the presence of heat.

Pull Roll
The pull roll maintains an equal tension across the film surface prior to entrance into the treater section.

In this position it is critical that the roll cover maintains the optimal coefficient of friction for superior grip. The ideal cover also exhibits high wearability and resists changes in hardness and other physical properties due to heat and age.

Flame Treater Nip
The backing roll to the treater roll ensures consistent film positioning and prevents inclusion of air at the treatment section.

The ideal backing roll cover retains its contour and hardness under challenging conditions. Superior release properties are also required.

Corona Treater Nip
The backing roll to the treater roll ensures consistent film positioning and prevents inclusion of air at the treatment section.

The roll must retain its contour and hardness under challenging conditions. The cover must also exhibit superior release properties.

Corona Treater
The backing roll to the corona treater helps position the film in the correct position for treatment.

The cover material must be homogeneous throughout the thickness of the cover without voids or occlusions and must be highly resistant to electrostatic discharge.

Seasoning
The seasoning roll maintains equal tension across the film surface upon exit from the treater section.

The roll must retain its contour and resist cover hardening which reduces the coefficient of friction thus impacting performance.

Winder Drum
The purpose of this roll is to maintain an equal tension across the film surface during film winding.

The roll must retain its contour and resist cover hardening. Cover hardening reduces the coefficient of friction thus impacting performance. This position also requires a high degree of vibration dampening to ensure even film winding.

Slitter Layon
The slitter layon roll maintains an equalized tension across the film surface during film winding.

For optimal performance, the roll must retain its contour and cover hardness. Roll cover hardening reduces the coefficient of friction thus impacting performance. This position also requires a high degree of vibration dampening to ensure even film winding.

Winder Contact
The winder contact roll maintains an equal pressure across the film surface during film winding.

This position requires a high degree of vibration dampening to ensure even film winding. The cover must also retain its contour and cover hardness to maintain its optimal coefficient of friction.

Coater
The BOPP coater roll is used to apply silicone emulsion or other thin films to plastic sheet.

This roll requires excellent wet-out of emulsion solution on the roll surface with a high degree of resistance to chemical penetration.