| 摘要 |
<p>The device is comprised of a perforated strip (1) provided with a spacing flange (2) transmitting the thrust at the broach (3). The conditioning box is comprised of a semi-rigid case (4) provided with flanges on which is fixed a thermoweldable plastic film (5) used also to bring back by thermosealing the perforated strip (1) against the upper edge (4a) of the case (4).</p> |
