| 摘要 |
<p>A continuous web (12) being cut into sheets (11) by a rotary knife having upper (13) and lower (14) knife cylinders is provided with a temporary transverse corrugated lead edge to stiffen the web and prevent the lead edge from rising at high line speeds and sagging at low line speeds. The temporary transverse corrugating effect is provided by spaced alternating deflection strips (31) on both knife cylinders (13, 14), located immediately behind the cutting blades (15, 16), and engaging the lead edge of the web (12) immediately after the preceding sheet (11) has been cut.</p> |
