two webs of material , each rolled on a separate roll of material , are linked or spaced together during a web - roll change , without stoppage of the web travel . a linking or splicing device is used for linking , particularly by gluing the fresh web of material to the exhausting web . a cutting device is used to produce two web ends . the cutting device is located downstream of the linking or splicing device , as seen in a direction of travel of the expiring or exhausting web of material .