System for a wrapping machine of the "sleeve" type to wrap hot sheets of packaging heat-shrink material around objects (10a, 10b, 10c, etc.) to be packaged, wherein said system comprises: - first objects conveyor means, which are able to move the objects (10a, 10b, 10c, etc.) longitudinally in a spaced succession; - second objects conveyor means, which are positioned downstream and at a short longitudinal distance with respect to said first objects conveyor means in order to form a first opening between said first and said second object conveyor means, which are able to receive the objects (10a, 10b, 10c etc.) arriving from said first objects conveyor means and to move the same objects (10a, 10b, 10c, etc.), along a wrapping surface which has an inlet end and an outlet end; - third objects conveyor means, which are arranged downstream and at a short longitudinal distance from said second object conveyor means in order to form a second opening between said second and said third object conveyor means, wherein said third objects conveyor means are able to receive the objects (10a, 10b, 10c, etc.) arriving from said second objects conveyor means; - sheets wrapping means, which are positioned in the vicinity of said second objects conveyor means and which comprise at least one suspended wrapping bar, which is oriented transversely with respect to the direction of advancement of the objects (10a, 10b, 10c etc.), in which said suspended wrapping bar is brought to move along an orbital path that passes through said first and said second opening, wherein said suspended wrapping bar transports the sheets (Sa, Sb, Sc) of wrapping material; - control means which are able to control, operate and synchronize the various operative means, characterized by the fact that it comprises: - sheets heater-feeder conveyor means for feeding and heating separate sheets of heat-shrink material, which are actuated by a third servomotor, driven and controlled by said control means; - sheet receptor-feeder conveyor means for feeding said sheets, which are actuated by means of a fourth servomotor driven and controlled by said control means; - wherein said sheet heater-feeder conveyor means are able to heat the sheets of heat-shrink material; - said sheet heater-feeder conveyor means are able to feed the heated and hot sheets of heat-shrink material towards said sheets receptor-feeder conveyor means; - said sheet receptor-feeder conveyor means are able to receive the heated and hot sheets of heat shrink material from said sheets heater-feeder conveyor means; - said sheet receptor-feeder conveyor means are able to feed the received heated hot sheets of heat-shrink material towards the sheet wrapping means. - first objects conveyor means, which are able to move the objects (10a, 10b, 10c, etc.) longitudinally in a spaced succession; - second objects conveyor means, which are positioned downstream and at a short longitudinal distance with respect to said first objects conveyor means in order to form a first opening between said first and said second object conveyor means, which are able to receive the objects (10a, 10b, 10c etc.) arriving from said first objects conveyor means and to move the same objects (10a, 10b, 10c, etc.), along a wrapping surface which has an inlet end and an outlet end; - third objects conveyor means, which are arranged downstream and at a short longitudinal distance from said second object conveyor means in order to form a second opening between said second and said third object conveyor means, wherein said third objects conveyor means are able to receive the objects (10a, 10b, 10c, etc.) arriving from said second objects conveyor means; - sheets wrapping means, which are positioned in the vicinity of said second objects conveyor means and which comprise at least one suspended wrapping bar, which is oriented transversely with respect to the direction of advancement of the objects (10a, 10b, 10c etc.), in which said suspended wrapping bar is brought to move along an orbital path that passes through said first and said second opening, wherein said suspended wrapping bar transports the sheets (Sa, Sb, Sc) of wrapping material; - control means which are able to control, operate and synchronize the various operative means, - sheets heater-feeder conveyor means for feeding and heating separate sheets of heat-shrink material, which are actuated by a third servomotor, driven and controlled by said control means; - sheet receptor-feeder conveyor means for feeding said sheets, which are actuated by means of a fourth servomotor driven and controlled by said control means; - wherein said sheet heater-feeder conveyor means are able to heat the sheets of heat-shrink material; - said sheet heater-feeder conveyor means are able to feed the heated and hot sheets of heat-shrink material towards said sheets receptor-feeder conveyor means; - said sheet receptor-feeder conveyor means are able to receive the heated and hot sheets of heat shrink material from said sheets heater-feeder conveyor means; - said sheet receptor-feeder conveyor means are able to feed the received heated hot sheets of heat-shrink material towards the sheet wrapping means.