Stretching
Corresponding type of rollers
Heating/Cooling Roll, double shell
Design: double shell, degressive spirals
Surface: hard chrome plated, polished
Features: good heating-/cooling efficiency
Heating/Cooling Roll, single shell
Design: single shell
Surface: hard chrome plated, polished
Features: good heating-/cooling efficiency
Coating Roll
Design: without cooling, with interior axis
Surface: hard chrome plated or rubber coated
Features: minimized deflection thanks to internal axis and two interior bearings
Rubber Roll
Design: double shell, degressive spirals
Surface: rubber coated, alternatively including Teflon-sleeve
Features: low cooling efficiency, good stiffness
Stretch Roll
Design: double shell, degressive spirals, low-pressure-design
Surface: hard chrome plated, nickel-plated, finish-polished or matt
Features: very good cooling efficiency, good stiffness despite of small diameter low pressure design