B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
B65H 45/109 (2006.01)
Patent
CA 2140295
Machine for folding a web (3) in a zigzag manner whereby this machine contains a transport mechanism (2) for the web (3), a receiving device (5) at the bottom for collecting the folded web, a folding mechanism (4) erected between the transport mechanism (2) and the receiving device (5) and a detection means (19, 20) to detect improper folds erected un- der the folding mechanism (4), characterized in that it con- tains means to move the web (3) backward in the folding me- chanism (2) and a control device (22) which is connected to these means and the detection means (19, 20), so that, at least with a first detection of an improper fold, the web (3) is moved backward in the folding merhanism (4) by said means over such a distance that the improper fold is entirely un- folded and so as to afterwards allow again for the normal forward movement of the web (3) through the folding me- chanism (4).
Robic
Web Converting Equipment Naamloze Vennootschap
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