| 摘要 |
PCT No. PCT/GB96/01575 Sec. 371 Date Jan. 29, 1998 Sec. 102(e) Date Jan. 29, 1998 PCT Filed Jun. 28, 1996 PCT Pub. No. WO97/01430 PCT Pub. Date Jan. 16, 1997A method of manufacture of a shaped flexible tube container, typically having a square or "D" section tube, from a flexible plastic tube (15) of substantially round cross section, in which longitudinally extending creases (31, 32) are formed in the wall of the tube by a creasing means (16, 17) acting on the external surface of the tube. The creasing means preferably comprise at least air of rollers (16 or 17) and the tube passes between the two rollers.
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