Blank (1000, 2000), in particular made of corrugated board, for manufacturing a container which is divided into sections suitable for receiving items to be inserted in the form of pieces and comprises at least five rectangular panel portions (2, 3, 4, 5, 6) connected by means of parallel longitudinal fold lines (7, 8, 9, 10), which panel portions form, in the finished container, a first side wall, a second side wall, an intermediate panel portion which is positioned between the first side wall and the second side wall and is designed to form a row of section partitions, means (1015, 1016, 1017, 1018, 1019, 2015, 2016, 2017, 2018, 2019) being provided for mechanical, preferably detachable, locking of the blank (1000, 2000) which has formed the finished container, a first base panel portion, which is outwardly connected to the panel portion forming the first side wall, together with a second base panel portion, which is outwardly connected to the panel portion forming the second side wall, forming a base in the finished container, the means for locking comprising means (1015, 1016, 1017, 1018, 1019, 2015, 2016, 2017, 2018, 2019) for mechanically connecting the first base panel portion to the second base panel portion, the means (1015, 1016, 1017, 1018, 1019, 2015, 2016, 2017, 2018, 2019) for mechanical connection having at least one incision (1015, 1016, 2015, 2016) made in at least one of the base panel portions and having tucking means (1017, 1018, 1019, 2017, 2018, 2019), connected to the other base panel portion, for tucking into the incision (1015, 1016, 2015, 2016), an incision (1017, 1018, 2017, 2018) made in the second base panel portion being associated as a pair with each incision (1015, 1016, 2015, 2016) made in the first base panel portion, at least one of the incisions (1017, 1018, 2017, 2018) associated as a pair having a bulge (1019, 2019), arranged in particular substantially in the centre of the incision (1017, 1018, 2017, 2018), characterised in that the intermediate panel portion, the panel portion forming the first side wall, and the panel portion forming the second side wall have a number of parallel incisions which extend transversely, correspond to the number of sections in the finished container and intersect the longitudinal fold lines (8, 9) which form the three panels (3, 4, 5), the intermediate panel portion having a number of transverse fold lines which extend as far as the longitudinal fold lines (8, 9) which delimit the intermediate panel portion, and the panels (3, 5) forming the side walls having oblique fold lines (1012, 2012) which start from the intersecting point of a longitudinal fold line (8, 9) and a transverse fold line in such a way that, when the first panel forming the side wall is folded and/or the second panel forming the side wall is folded relative to the intermediate panel portion, those regions of the intermediate panel portion which are each delimited by a transverse fold line, two oblique fold lines (1012, 2012) and an additional incision (1013, 2013) are folded and form portions which extend transversely and determine the sections, both ends of each transversely extending incision extending behind the corresponding longitudinal fold lines (8, 9) and intersecting the additional incision (1013, 2013), the two ends of which adjoining an oblique fold line (1012, 2012), the incision (1015, 1016, 1017, 1018, 2015, 2016, 2017, 2018) being made substantially in a straight line and being oriented relative to the longitudinal fold lines (7, 8, 9, 10) so as to be rotated by an angle, and the additional incision (1013, 2013) having a substantially U-shaped and/or V-shaped portion.