The blank in the material in sheet of cardboard, and the spider, process and machine for the embodiment of such a crosspiece obtained from such a blank.

摘要

The present invention relates to a blank (1) made from a cardboard sheet for producing a cross-bracing insert (2) and also to the corresponding method, machine and cross-bracing insert. The blank comprises at least a first set of flaps, said first set comprising a first, rectangular or square flap (3), which is suitable for forming the base of the cross-bracing insert and is connected to a second, approximately square or rectangular flap (5) which is suitable for forming an intermediate wall between two compartments, the second flap comprising a first locking protrusion (7) and a third, central flap (10) which is connected to the first flap located on the side corresponding to the protrusion, is approximately rectangular and is provided with a first perforated tongue (12) which is arranged so as to lock with the first protrusion in order to keep the blank assembled in order to produce the cross-bracing insert.