Patent ID: 7449671

Claim:
A method for controlling reeling in a reeler used to wind up a web being made, and traveling in a machine direction, the method comprising the steps of: winding a web being formed onto a reeling core, to form a reel by directing the web over a reeling element and in to a nip formed between the reeling element and the reel, and loading the reeling core and the reeling element against each other to form the nip; monitoring the movement of the web into the nip with electromagnetic radiation using at least one device selected from the group consisting of: a line camera, a digital camera, a video camera, a line laser, a distance-measuring laser(s) and a computer vision apparatus; and automatically detecting at least one event deviating from normal reeling, in an area leading in to the nip selected from the group consisting of: an interference in the shape of an airbag, superfluous objects appearing near the reeling nip, loose pieces of paper, or a double web edge, the web drifting into a wrong place, a piling up of the web, and a web split in the machine direction.