Apparatus for wrapping products with film

A wrapping apparatus associable with a packaging machine for wrapping with a film made of plastic material groups of products, including:

• conveyor elements for supporting and moving said groups of products along a longitudinal advancing direction and forming a supporting plane of said products;
• a film feeding unit positioned under said supporting plane for dispensing film portions of defined length through a transverse opening of said conveyor elements so as to engage said groups of products;
• a wrapping unit that includes a plurality of crossbars, each of which supported by at least a respective rod, wherein said crossbars are arranged for picking said film portions that come out from said transverse opening and wrapping said film portions around said groups of products, an hub arrangement that is rotatable about a rotation axis and slidably supports said rods of said crossbars so that said rods are mobile linearly and transversally to said rotation axis and rotatably about said rotation axis and said crossbars are consequently moved along a defined closed loop wrapping trajectory;
• and
• a guiding assembly engaged by said rods and/or by said crossbars for guiding the latter ones along said wrapping trajectory changing a distance of said crossbars from said rotation axis during a rotation of said respective rods;
• wherein said apparatus can be coupled in a removable manner to said hub arrangement so as to change a number of said rods and of said respective crossbars and an angular distance between said rods around said rotation axis according to dimensions of products and/or a pitch between successive groups of products on said supporting plane.