| 摘要 |
PCT No. PCT/GB96/00770 Sec. 371 Date Feb. 2, 1998 Sec. 102(e) Date Feb. 2, 1998 PCT Filed Mar. 29, 1996 PCT Pub. No. WO96/32328 PCT Pub. Date Oct. 17, 1996A vertical form fill and seal packaging machine has a pair of sealing jaws for forming horizontal seals across the tubular packaging material at regular intervals, and a stripping device comprising a pair of conveyors mounted separately from and at the side of the sealing jaws and carrying cooperating parallel stripping bars 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. |
