Method and apparatus for cutting and stacking sheets of a web material

A method for producing and stacking sheets cut from a web of material corresponding to jobs I-V, said method comprising:

• a) cutting longitudinally, at least two web sections (7a, 7b) of predetermined width;
• b) cutting transversely a predetermined number of sheets of material of predetermined length from each of the at least two web sections (7a, 7b);
• c) delivering the predetermined number of sheets of material, each corresponding to one of the jobs (I-V), in combined fashion;
• wherein
• d) a change in the width of the first (7a) of the at least two web sections (7a, 7b) occurs as a consequence of a new job (III) for the first web section (7a), an ongoing job (II) for the second (7b) of the at least two web sections (7a, 7b) is interrupted whenever the ongoing job (II) for the second web sections (7b) cannot be executed simultaneously with the new job (III) for the first web section (7a);
• e) the second web section (7b) in accordance with a further new job (IV) for the second web sections is executed simultaneously with the new job (III) for the first web section (7a), by cutting longitudinally and transversely;
• f) the sheets of material of the new further job (IV) for the second web section (7b) are delivered separately from the sheets of material of the interrupted ongoing job (II);
• and
• g) a remainder of the interrupted ongoing job (II), is resumed or executed to completion, in response to another chance of predetermined width of the first web section (7a) as a consequence of an additional new job (V) which enables the simultaneous execution along with the interrupted ongoing job (II).