Patent ID: 7100345

Claim:
A packaging device for positioning webs of film, comprising: means to advance a first web of film having troughs formed in it; means to withdraw a second web of film having imprints divided into individual repeats from the supply of web; means for placing the second web of film on the first web of film; a first recognition means arranged in the area of the supply of the second web of film to detect the movement of the repeats of imprints on the second web of film, wherein, in an area downstream of the positioning of the second web of film on the first web of film, a second recognition means is provided to determine an exact position of the repeats of imprint on the second web of film relative to the troughs of the first web of film; and a controller means for changing the position of the first recognition means relative to the direction of conveyance of the second web of film in the event of dimensional errors.