Patent ID: 6907715

Claim:
A device for stretching a film in an automatic product packaging machine, for products ( 12 ) of any thickness and size, spaced from each other at a pre-set distance, said device comprising a first conveyor belt ( 14 ) which feeds said products ( 12 ) to a second conveyor belt ( 19 ) combined with a wrapping film feeder ( 26 , 28 ), an oscillating longitudinal sealer ( 34 ) and a transverse sealer ( 35 ) for sealing said film over said products ( 12 ), wherein said device further comprises a pair of drive rollers ( 25 ) for stretching said film ( 26 ) at the inlet of said second conveyor belt ( 19 ) and a cylinder ( 29 ) attached to a stem ( 32 ) fitted with an idle pressure roller ( 33 ) which engages said stretched film ( 26 ) on said second conveyor belt ( 19 ).