Abstract: The invention relates to an apparatus for selectively shrinking a film, which is wrapped around a product (P), comprising a frame (9), a driven conveyor (1) mounted on said frame (9) and intended to transport sequentially a plurality of products (P), a heat source (5) arranged under the conveyor (1) and which generates a hot fluid, and a plurality of nozzles (5.1) oriented towards the low part of said conveyor (1), the hot fluid being provided to said nozzles (5.1). The heat source (5) and the nozzles (5.1) are fixed and the apparatus also comprises closing means by means of which the hot fluid reaches only the front and rear ends of each product (P).

Abstract: The present invention relates to machines used to wrap objects or articles using a film sheet obtained from a reel. This machine uses a mechanism that adjusts to and fro movement of a connecting rod thereby limiting the length of the film to be used for wrapping the article or product. This mechanism includes a connecting rod (6) capable of to and fro movement in response to the swinging movement of a lever (1) that is set off by a cam (2). The connecting rod (6) has a lateral part (8) with a pulley wheel (9) that runs along a groove (10) within a guide (11). The guide has an articulation (12) that is jointed to the chassis (13) of the machine, in such a way that an adjustment in a swinging position of the guide (11) limits the to and fro movement of the connecting rod (6) and thus the mechanism connected to the connecting rod will carry on the drive and sectioning of the film to be used as a wrapper.