US 12,350,132 B2
Line and process for the production of nappy pants
Matteo Piantoni, Bologna (IT); and Alessandro Zavalloni, Bologna (IT)
Assigned to GDM S.p.A., Bologna (IT)
Filed by GDM S.p.A., Bologna (IT)
Filed on Jun. 13, 2022, as Appl. No. 17/838,468.
Claims priority of application No. 102021000015557 (IT), filed on Jun. 15, 2021.
Prior Publication US 2022/0395406 A1, Dec. 15, 2022
Int. Cl. A61F 13/15 (2006.01); A61F 13/49 (2006.01); A61F 13/496 (2006.01); A61F 13/539 (2006.01)
CPC A61F 13/15772 (2013.01) [A61F 13/49011 (2013.01); A61F 13/496 (2013.01); A61F 13/539 (2013.01)] 10 Claims
OG exemplary drawing
 
1. 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.