In accordance with one preferred embodiment of the invention, the first object is achieved by means of a roll of the assembly having a substantially cylindrical shape with a shell surface, rotatable around a shell axis, at a first distance from the shell axis, the heater comprising {HEAD ~ at least one heater section} intended for heating {TAIL ~ the shell surface}, and the heater section being supported, via a suspension attachment, by a supporting means at a variable, second distance from the shell axis 
intended for heating
In accordance with one preferred embodiment of the invention , the first object is achieved by means of a roll of the assembly having a substantially cylindrical shape with a shell surface , rotatable around a shell axis , at a first distance from the shell axis , the heater comprising { HEAD ~ at least one heater section } intended for heating { TAIL ~ the shell surface } , and the heater section being supported , via a suspension attachment , by a supporting means at a variable , second distance from the shell axis
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