B - Operations – Transporting – 65 – B
Patent
B - Operations, Transporting
65
B
156/42
B65B 11/02 (2006.01) B65B 11/58 (2006.01) B65B 41/04 (2006.01) B65B 41/14 (2006.01)
Patent
CA 1308643
(57) Abstract of the Disclosure The invention concerns a device for the spreading of the top wrapping film in wrapping in a wrapping machine (1). The wrapping machine (1) is provided with a top film device, which comprises a top-film roll (7) as well as devices (10,20) for feeding and pulling the top film, which said devices are arranged to spread the top film (8) above the product to be packaged and to cut the top film to the specified dimension, as well as with a press plate (30) which presses the product (40) to be packaged from above for the purpose of keeping the product (40) to be packaged in its position during the wrapping. The devices for the feed (10) and for the pulling (20) of the top film are arranged on the frame (2) of the wrapping machine as moving at the same time in opposite directions, as compared with each other. When the products to be packaged are being exchanged and when the wrapping is interrupted, said feed device (10) is arranged to pull the top film (8) out of the top-film roll (7) substantially to the middle of the wrapping station. The pulling device (20) is arranged to fetch the leading end of the top film (8) from the middle of the wrapping station and to pull the top film (8) across the wrapping station to underneath the press plate (30) to a stand-by position. At the same time, the feed device (10) returns to its starting position and cuts off the top film (8) to the specified dimension. The invention also concerns a method for the spreading of the top wrapping film. (FIG. 1)
594418
Gowling Lafleur Henderson Llp
Newtec International
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