Abstract: The invention relates to a roll device (300) that comprises: a roll (100) removably connectable to a support structure (200); —a heating element (7) seated within the roll (100); an electrical connector for supplying the heating element (7). The roll device is characterized in that the connector comprises: —a first contact (12) arranged in a bottom wall (8) of the roll (100); —a second contact (13) arranged in the support structure (200) and adapted for engaging the first contact (12) in pressing contact, wherein one between the first (12) and the second (13) contact is movable between a retracted position and a position extended towards the other contact and permanently stressed in the extended position.

Abstract: The invention relates to a roll device (300) that comprises: a roll (100) removably connectable to a support structure (200); —a heating element (7) seated within the roll (100); an electrical connector for supplying the heating element (7). The roll device is characterised in that the connector comprises: —a first contact (12) arranged in a bottom wall (8) of the roll (100); —a second contact (13) arranged in the support structure (200) and adapted for engaging the first contact (12) in pressing contact, wherein one between the first (12) and the second (13) contact is movable between a retracted position and a position extended towards the other contact and permanently stressed in the extended position.