| 摘要 |
<p>The machine, which operates in association with a paper feeder and with a system of rolls for revolving the coil, includes the following equipment: guide rolls resting on the cylindrical surface of the coil; primary folding devices, including screw rollers, for pleating the open ends of the paper against the circular sides of the coil; secondary folding devices, including additional screw rollers, for bending back the edges of the paper into the hollow core of the coil.</p> |
