Patent EA-004819-B1 (EA)
Title: Cut sheet and packet, in particular for cigarettes
Inventor: LUTZIG BODO-WERNER
IPC: B65D5/66
Filed: 2002-02-13
Abstract: 1. Pre-cut sheet (10) made from foldable material for forming a cuboidal box which is closed at least on 5 sides, two main surface fields (20, 40) lying diametrically opposite each other in the cuboidal box to be formed and a base field (30) connecting them being arranged in rectilinear succession in the precut sheet (10) and the sides which, in the cuboidal box to be formed, lie against the two main surface fields (20, 40) lying diametrically opposite each other and against the base field (30) connecting these, are formed by side-surface fields (22, 24, 42, 44) which project laterally from the two main surface fields (20, 40), and edges of the two main surface fields (20, 40) lying diametrically opposite each other in the cuboidal box to be formed being formed by fold areas, characterized in that - two fold areas meet each other at corners of the two main surface fields (20, 40) lying diametrically opposite each other in the cuboidal box to be formed and - of two fold areas which meet each other the one is delimited by a circle arc segment of approx. 45 degree to 90 degree and the other by an S-curve, the S-curve conforming to the circle arc segment to the corner of the main surface fields (20, 40). 2. Pre-cut sheet (10) according to claim 1, characterized in that the fold areas are each formed by two or more neighbouring, essentially parallel fold lines. 3. Pre-cut sheet (10) according to one of claims 1 or 2 with a first main surface field (20) with a left- and right-hand first side-surface field (22, 24), - a base field (30) joining up with the top edge of the first surface field (20) and a second main surface field (40) with a left- and right-hand second side-surface field (42, 44) with the top edge of the base field (30), - the pre-cut sheet (10) having horizontal and vertical fold areas, namely a first and second horizontal fold area (80, 82) between the first main surface field (20) and the base field (30) as well as between the base field (30) and the second main surface field (40) and first to fourth vertical fold areas (90, 91, 92, 93) between the left-hand first side-surface field (22) and the first main surface field (20), the first main surface field (20) and the right-hand first side-surface field (24), the left-hand second side-surface field (42) and the second main surface field (40) as well as between the second main surface field (40) and the right-hand second side-surface field (44), - the first horizontal fold area (80) meeting the first and second vertical fold areas (90, 91) at the top corners (21, 23) of the first main surface field (20) and - the second horizontal fold area (82) meeting the third and fourth vertical fold areas (92, 93) at the bottom corners (41, 43) of the second main surface field (40). 4. Pre-cut sheet (10) according to claim 3, characterized in that a left- and right-hand second side-surface field end tab (46, 48) joins up with the bottom edge of the left- and right-hand second side-surface field (42, 44). 5. Pre-cut sheet (10) according to claim 3 or 4, characterized in that a third main surface field (50) with a left- and right-hand third side-surface field (52, 54) joins up with the top edge of the second main surface fields (40), a top side field (60) with the top edge of the third main surface field (50) and a fourth main surface field (70) with a left- and right-hand side-surface field (72, 74) with the top edge of the top side field (60), - the pre-cut sheet (10) having further horizontal and vertical fold areas, namely a third and fourth horizontal fold area (84, 86) between the third main surface field (50) and the top side field (60) as well as between the top side field (60) and the fourth main surface field (70) and fifth to eighth vertical fold areas (94, 95, 96, 97) between the left-hand third side-surface field (52) and the third main surface field (50), the third main surface field (50) and the right-hand third side-surface field (54), the left-hand fourth side-surface field (72) and the fourth main surface field (70) as well as between the fourth main surface field (70) and the right-hand fourth side-surface field (74), - the third horizontal fold area (84) meeting the fifth and sixth vertical fold areas (94, 95) at the top corners (51, 53) of the third main surface field (50) and - the fourth horizontal fold area (86) meeting the seventh and eighth vertical fold areas (96, 97) at the bottom corners (71, 73) of the fourth main surface field (70). 6. Pre-cut sheet (10) according to claim 5, characterized in that a left- and right-hand third side-surface field end tab (56, 58) joins up with the top edge of the left- and right-hand third side-surface fields (52, 54) and a strengthening field (72) with the top edge of the fourth main surface field (70). 7. Pre-cut sheet (10) according to one of claims 1 to 6, characterized in that the foldable material is short-grain cardboard or short-grain paper. 8. Pre-cut sheet (10) according to claim 7, characterized in that the fold lines are scoring lines (100). 9. Pre-cut sheet (10) according to claim 8, characterized in that the scoring lines (100) of the vertical fold areas are formed by a 10 - 80%, in particular a 40 60%, reduction in the thickness of the paper or cardboard and the scoring lines (100) of the horizontal fold areas by a 10 - 50%, in particular a cardboard. 10. Pre-cut sheet (10) according to one of claims 1 to 9, characterized in that the end of the circle arc segment and the end of the S-curve run at right angles from each other and lie parallel to the edges of the main surface fields (20, 40, 50, 70). 11. Pre-cut sheet (10) according to one of claims 1 to 10, characterized in that the ends of at least one fold area are both delimited either by the circle arc segment or the S-curve. 12. Pre-cut sheet (10) according to one of claims 1 to 11, characterized in that in all fold areas which meet at their two ends at a right angle to other fold areas, both ends of these fold areas are delimited either by the circle arc segment or the S-curve. 13. Pre-cut sheet (10) according to one of claims 1 to 12, characterized in that all fold areas lying parallel to each other are in each case delimited either by the circle arc segment or the S-curve. 14. Box, which can be produced from a pre-cut sheet (10) according to one of claims 1 to 13. 15. Box, which can be produced from a pre-cut sheet according to claim 8 or 9, the scoring lines (100) being located on the inside of the box.