| 摘要 |
<p>The stretch film is formed by two overlaid layers of stretch films (100), of identical characteristics. The material is formed by extruding a stretch film tube, and then laying it flat using an air cushion (16,116) after cooling. The film is cut (14) longitudinally to give the two layers, to be drawn by a pair of powered cylinders (2) and wound into a bobbin around a single axis, on a winder turret to give a continuous action.</p> |
