| 摘要 |
<p>A vertical form fill and seal packaging machine comprises a pair of sealing jaws (12, 14; 114, 116) for forming horizontal seals across the tubular packaging material (10) at regular intervals, and a stripping device comprising a pair of conveyors (21; 22; 42; 44; 51 etc.) mounted separately from and at the side of the sealing jaws and carrying cooperating parallel stripping bars (26; 40A, 40B, 40C, 40D) which are moved downwards by the conveyors, on opposite sides of the packaging material and ahead of engagement of the packaging material by the sealing jaws, to ensure that product being packaged drops down past the sealing jaws before the jaws act to form each seal.</p> |
