| 摘要 |
<p>The machine (M) has a common electronic programmer (50) with a virtual shaft arranged for determining bell-shaped continuous profiles of speed variation for electric motors (41-43). The profiles comprise a common terminal segment whose length is chosen corresponding to identical speed of the motors for advancing a continuous flat sheath (13) over a tangency point of two ejecting rollers (32, 33) such that the sheath is pinched by the rollers before immobilizing the sheath for cutting and ejecting the sheath. The sheath is made of thermoplastic material.</p> |
