| 摘要 |
PCT No. PCT/SE94/00419 Sec. 371 Date Nov. 3, 1995 Sec. 102(e) Date Nov. 3, 1995 PCT Filed May 5, 1994 PCT Pub. No. WO94/27121 PCT Pub. Date Nov. 24, 1994A guide mechanism (3) for positioning a continuously flexible packaging web (20) which has two opposite walls (21a, b) defining packaging blanks (26) disposed, in succession, in the longitudinal direction of the web. The packaging blanks have closed bottoms at the lower edge and opposing edge portions (24a, b) at the upper edge (23). The guide mechanism includes mechanical guide members (33a, b) provided with at least one channel (31a, b) for guiding the edge portions (24a, b) during displacement of the web in an apparatus for the supply of material into the packaging blanks (26). The mechanical guide members (33a, b) are formed from a number of links (30). In the region of the apparatus where the edge portions (24a, b) of the web are to be spaced transversely apart, the links are disposed in mutual spaced-apart relationship. In order to permit adjacent links to pivot and achieve the transversely spaced relation, shafts (37) are disposed between the faces of adjacent links and the links are urged against the shafts by springs (36). |
