公开(公告)号：US20220125647A1

公开(公告)日：2022-04-28

申请号：US17427858

申请日：2020-02-11

Applicant: GDM S.p.A.

Inventor： Andrea DUCHINI ,  Giacomo NOFERINI ,  Matteo PIANTONI ,  Gabriele RESMINI ,  Marco ROSANI ,  Alessandro SACCOMANI ,  Maurizio SPATTI

IPC: A61F13/15 ,  B29C65/08 ,  B29C65/78 ,  B29C65/00

Abstract: A rotary welding device which includes a rotary part rotating about its axis of rotation, one or more supporting elements for supporting a continuous strip, specifically a strip of nappies, supported by the rotary part, and a plurality of welding units, mounted on the rotary part, for welding the continuous strip; each welding unit is configured to pass from a non-operating position to an operating position and vice versa; each welding unit includes a respective welding tip and a respective anvil element which is movable relative to the welding tip; each welding unit includes respective first movement means configured to drive the anvil element in rotation relative to the welding tip from an initial position, where the anvil element is angularly spaced from the welding tip, to a final position, where the surface of the welding tip and the surface of the anvil element are parallel and aligned with each other along the same axis, and vice versa.

公开(公告)号：US20220000677A1

公开(公告)日：2022-01-06

申请号：US17368314

申请日：2021-07-06

Applicant: GDM S.p.A.

Inventor： Andrea DUCHINI ,  Aldo FUSAR POLI ,  Matteo PIANTONI ,  Gabriele RESMINI ,  Marco ROSANI ,  Maurizio SPATTI

IPC: A61F13/15

Abstract: A rotary device for welding a continuous web comprises a rotary unit rotating about a respective axis and welding units for welding the web mounted, angularly spaced, on the rotary unit. A movement device varies a radial position of the welding units. First and second supporting elements supporting the web are disposed, respectively, upstream and downstream of respective ones of the welding units, to keep the web tensioned when the respective welding unit is at an operating position. The first and second supporting elements are supported by a load-bearing structure connected to the welding units in such a way that a radial movement of the welding units corresponds to a movement of the first and second supporting elements towards and away from the axis.

公开(公告)号：US20210187870A1

公开(公告)日：2021-06-24

申请号：US16950219

申请日：2020-11-17

Applicant: GDM S.P.A.

Inventor： Matteo PIANTONI ,  Gabriele RESMINI ,  Maurizio SPATTI ,  Aldo FUSAR POLI ,  Andrea DUCHINI ,  Enrico CAMPAGNOLI ,  Luca BORDERI ,  Andrea BIONDI ,  Gianluca PARISINI

IPC: B29C65/78 ,  B29C65/00 ,  B29C65/08

Abstract: A rotary device for welding a continuous web includes a rotary element, support elements for supporting the web, supported by the rotary element, and a plurality of welding units for welding the web. Each welding unit passes from a non-operating position to an operating position and vice versa, and includes a first movement device for commanding a relative rotation of an anvil element relative to a welding tip and a second movement device for moving the anvil element relative to the welding tip such that a contact surface of the anvil element and a contact surface of the welding tip make contact with a portion of the web in a zone between them, and vice versa. First and second drive mechanisms drive the first and second movement devices. The first and second drive mechanisms are configured to vary a positioning of the welding tip relative to the axis.

公开(公告)号：US20210038441A1

公开(公告)日：2021-02-11

申请号：US16965848

申请日：2019-01-17

Applicant: GDM S.p.A.

Inventor： Federico TOSCANI ,  Matteo PIANTONI ,  Andrea DUCHINI ,  Marco ROSANI

IPC: A61F13/15 ,  B65H37/04

Abstract: An apparatus for forming an absorbent pad for an absorbent sanitary article having a zone free of absorbent material to define a channel of the pad includes a forming drum, a first feed system for feeding a first web, a second feed system for feeding a second web, a spreader for spreading the absorbent material on the drum; a joining system for joining the first and second webs to define the channels. A first dispenser forms on the first web a layer of first adhesive substance according to a spreading pattern having zones free of the first adhesive substance corresponding to the channels. A second dispenser dispenses a second adhesive substance, whose adhesive force is greater than an adhesive force of the first adhesive substance, on the second web according to a pattern having a layer placed at a zone free of the first adhesive substance.

公开(公告)号：US20200093648A1

公开(公告)日：2020-03-26

申请号：US16563722

申请日：2019-09-06

Applicant: GDM S.p.A.

Inventor： Matteo PIANTONI ,  Marco ROSANI ,  Federico TOSCANI ,  Andrea DUCHINI ,  Mauro PIETRALUNGA ,  Aldo FUSARPOLI

IPC: A61F13/15

Abstract: A method for forming an absorbent article including a first absorbent core and a second absorbent core which are superposed on each other, includes feeding a first supporting web along a first feed path in a first feed direction; placing a succession of first absorbent cores on the first supporting web at a preset spacing; feeding a second supporting web along a second feed path in a second feed direction; placing a succession of second absorbent cores on the second supporting web at the preset spacing; coupling the first supporting web to the second supporting web such that each first absorbent core is coupled to a corresponding second absorbent core in a composite web including the succession of first absorbent cores and the succession of the second absorbent cores interposed between the first supporting web and the second supporting web.