Line and process for the production of nappy pants

A line for production of diaper pants each comprising at least one absorbent pad and a plurality of elastic bands, said elastic bands and said at least one absorbent pad defining together a pant structure, said production line comprising:

• a first forming unit for forming a composite web from which said at least one absorbent pad is obtained,
• a second unit for forming elastic bands for forming said elastic bands and an assembly line having a first infeed for said composite web, a second infeed for said elastic bands and an outfeed for said diaper pants,
• said assembly line comprising a plurality of processing units to construct said diaper pants starting from said composite web and from said elastic bands,
• wherein said processing units each comprise a computerized command and control unit and wherein said production line comprises a computerized high level control unit in communication with said computerized control units in the assembly line,
• said high level control unit being configured to impart to each computerized command and control unit at least one control signal adapting production operation of the respective processing unit as a function of a size of the diaper pants being produced in the production line,
• said processing units being configured to perform a respective processing as a function of a format set using the respective at least one control signal;
• wherein the plurality of processing units include:
• a processing unit configured for cutting the composite web;
• a processing unit configured for spacing and rotating the absorbent pads;
• a processing unit configured for cutting the elastic bands;
• a processing unit configured for applying a label to the diaper pants;
• a processing unit configured for welding the elastic bands to the diaper pants;
• a processing unit configured for separating the diaper pants from each other;
• and
• a processing unit configured for spacing the diaper pants;
• wherein each of the processing units uses electronic cam profiles to provide for complete adaptability of the line regardless of a size of the diaper pants, or a subcomponent thereof, wherein each of the electronic cam profiles is driven by a respective at least one control signal.