| 摘要 |
<p>A mechanism for offsetting or overlapping successive sheets of material in an interfolding machine includes a bed roll (45) rotating at a first speed and a retard roll (55) rotating at a slower, second speed and positioned adjacent the bed roll (45). As successive sheets are transferred from the bed roll to the retard roll, the sheets are engaged by a nip roller assembly (60) positioned adjacent the retard roll (55) and forming a nip through which the sheets pass. The retard roll (55) forms a deflection or bubble (225) in the individual sheet passing through the nip, which enables a successive sheet to be positioned beneath the previous sheet, thereby forming the overlap of the successive sheet with the previous sheet. <IMAGE></p> |
