| 摘要 |
PCT No. PCT/IB94/00036 Sec. 371 Date Nov. 10, 1994 Sec. 102(e) Date Nov. 10, 1994 PCT Filed Mar. 11, 1994 PCT Pub. No. WO94/20281 PCT Pub. Date Sep. 15, 1994A continuous tubular box body production method, particularly for cardboard boxes, using a number of stacked longitudinal strips. After sizing the continuously moving straps (2, 3, 4), they are applied lengthwise against a stationary guide (8) ending in a mandrel (10) with a circumference defining the cross-sectional shape of the tubular body (1, 17), whereby each strip has a side flap on either side of the guide which is then folded down around the circumference of the mandrel (1) as the strips move therealong. The method is characterized in that the side flaps (2a, 1b; 3a, 3b; 4a, 4b) are at least partially asymmetrically folded down so that one of the flaps on each strip is folded down before the other, whereby various longitudinal joint configurations and arrangements may be achieved, wherein the joints are arranged above one another or offset in alternate directions. |
