Patent ID: 8099935

Claim:
Method for automatically fixing the tail end of the film for wrapping usually palletized loads, said film being supplied by a distributor with a reel (B) and with pre-stretching means, which is displaced parallel to the axis of the said load so as to wrap the latter in the direction of its height and which is made to perform a relative rotational movement about the same load, characterized by the succession of the following working steps performed at the end of each wrapping cycle: a) Positioning along the side of the load and parallel thereto a straight member ( 1 ) and transversely extending over it a section of a penultimate turn (S) of the wrapping film so as to form a vertically open pocket (Z) between this turn and the wrapped load; b) Moving an edge of the film portion of the said penultimate turn which touches the said straight member towards the other edge of the said turn so as to free space on the said straight member ( 1 ); c) Extending over the free space of said straight member ( 1 ) a section of a last turn (S 1 ) of the wrapping film, which, unlike the other turn (S), surrounds the load only partly since the said distributor with the reel (B) is arranged and positioned at a short distance and downstream of the said straight member ( 1 ); d) The part of the said last turn (S 1 ) situated on the said straight member is moved away from the said penultimate turn (S), is made to pass over the said straight member ( 1 ) and is inserted and pulled into the said pocket (Z), remaining temporarily connected to the said distributor with the reel (B); e) The part of the said penultimate turn situated on the said straight member ( 1 ) is made to pass gradually over this member, coming out from the said end from where the tail end came out, so as to close gradually the said pocket; f) Transversely cutting the section of the said last turn which projects from the pocket and which is connected to the said distributor so as to create and separate the tail end of the finished wrapping from the new leading end of the wrapping film which is retained by special means; g) In synchronism with the said step of cutting the tail end and retaining the new leading end of the wrapping film, the penultimate turn of the film is made to pass over completely the said straight member so as to adhere to the wrapped load, close definitively the said pocket (Z) and trap firmly inside the latter the said tail end which is released by the pulling means.