An automatic packaging machine, comprising: - an input conveyor belt onto which a product, or a group of products, intended for packaging is loaded; - a reel holder containing a single-fold film reel which: is configured to feed the automatic packaging machine by unwinding a single-fold film; - a film former having a contoured shape, which is configured to deploy the single-fold film separating two edges of single-fold film, originally folded one on top of the other, in order to wind it around the product to be packaged; - a sealing bar which is configured to seal the single-fold film around the product by sealing the still-open sides of single-fold film; - an output conveyor belt which is configured to move the product away from the automatic packaging machine once the packaging has been completed; - a device for pulling the single-fold film, comprising: - at least two driving wheels, in particular, an upper driving wheel and a lower driving wheel, in contact with a layer of single-fold film interposed between the two driving wheels, and which, rotating in opposite directions, are configured to move the single-fold film along the automatic packaging machine; - a drive shaft, which is configured to transfer a rotational motion to the driving wheels, so that the driving wheels move the single-fold film along the automatic packaging machine (; characterized in that the packaging machine further comprises: - a collecting device, in which the scraps of single-fold film, generated by the packaging process, are collected and deposited; - a lifting actuator, which is configured to move the upper driving wheel away from the lower driving wheel (or vice versa) when sealing the single-fold film, so as to reduce the tensioning exerted by the driving wheels on the single-fold film during the sealing step; wherein the lifting actuator is actuated by the drive shaft. - an input conveyor belt onto which a product, or a group of products, intended for packaging is loaded; - a reel holder containing a single-fold film reel which: is configured to feed the automatic packaging machine by unwinding a single-fold film; - a film former having a contoured shape, which is configured to deploy the single-fold film separating two edges of single-fold film, originally folded one on top of the other, in order to wind it around the product to be packaged; - a sealing bar which is configured to seal the single-fold film around the product by sealing the still-open sides of single-fold film; - an output conveyor belt which is configured to move the product away from the automatic packaging machine once the packaging has been completed; - a device for pulling the single-fold film, comprising: - at least two driving wheels, in particular, an upper driving wheel and a lower driving wheel, in contact with a layer of single-fold film interposed between the two driving wheels, and which, rotating in opposite directions, are configured to move the single-fold film along the automatic packaging machine; - a drive shaft, which is configured to transfer a rotational motion to the driving wheels, so that the driving wheels move the single-fold film along the automatic packaging machine (; characterized in that the packaging machine further comprises: - a collecting device, in which the scraps of single-fold film, generated by the packaging process, are collected and deposited; - a lifting actuator, which is configured to move the upper driving wheel away from the lower driving wheel (or vice versa) when sealing the single-fold film, so as to reduce the tensioning exerted by the driving wheels on the single-fold film during the sealing step; wherein the lifting actuator is actuated by the drive shaft. - at least two driving wheels, in particular, an upper driving wheel and a lower driving wheel, in contact with a layer of single-fold film interposed between the two driving wheels, and which, rotating in opposite directions, are configured to move the single-fold film along the automatic packaging machine; - a drive shaft, which is configured to transfer a rotational motion to the driving wheels, so that the driving wheels move the single-fold film along the automatic packaging machine (; characterized in that the packaging machine further comprises: - a collecting device, in which the scraps of single-fold film, generated by the packaging process, are collected and deposited; - a lifting actuator, which is configured to move the upper driving wheel away from the lower driving wheel (or vice versa) when sealing the single-fold film, so as to reduce the tensioning exerted by the driving wheels on the single-fold film during the sealing step; wherein the lifting actuator is actuated by the drive shaft. - a collecting device, in which the scraps of single-fold film, generated by the packaging process, are collected and deposited; - a lifting actuator, which is configured to move the upper driving wheel away from the lower driving wheel (or vice versa) when sealing the single-fold film, so as to reduce the tensioning exerted by the driving wheels on the single-fold film during the sealing step; wherein the lifting actuator is actuated by the drive shaft.