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：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：US20240374437A1

公开(公告)日：2024-11-14

申请号：US18657389

申请日：2024-05-07

Applicant: GDM S.P.A.

Inventor： Aldo FUSAR POLI ,  Gino LISSANI ,  Matteo PIANTONI ,  Alessandro SACCOMANI ,  Alessandro ZAVALLONI

IPC: A61F13/15

Abstract: A method for making absorbent sanitary articles, each comprising a first discrete element and a second discrete element, comprises: feeding a succession of first discrete elements along a first feed path; feeding a succession of second discrete elements along a second feed path; applying each first discrete element of the succession of first discrete elements on a support web having a longitudinal axis and movable in a feed direction along a third feed path, the first discrete elements being applied on the support web at a first applicator station; applying each second discrete element of the succession of second discrete elements on the support web at a second applicator station located downstream of the first applicator station in the feed direction of the support web; the method comprises adjusting a length of the third feed path between the first applicator station and the second applicator station, so that each second discrete element is applied on the support web at a predefined position relative to a respective first discrete element.

公开(公告)号：US20210171310A1

公开(公告)日：2021-06-10

申请号：US17052358

申请日：2019-05-07

Applicant: GDM S.p.A.

Inventor： Aldo FUSAR POLI ,  Marco ROSANI ,  Matteo PIANTONI

IPC: B65H37/06 ,  B65H20/06

Abstract: A folding apparatus for a continuous web for production of absorbent hygiene articles and intended to be folded into a “V” or “U” shape in first and second longitudinal portions along a folding line parallel to a feeding line. A folding section includes a contact unit extending along the feeding line and defining the folding line. First and second guides are positioned on opposite sides of the contact unit and respectively have first and second sliding surfaces. The first and second sliding surfaces extend in a helical fashion along the feeding line, each having a respective infeed section, where the web is not folded, and a respective outfeed section, positioned downstream of the respective infeed section according to a web feeding direction, where the web is folded in two and has the first portion and the second portion set at an angle to each other.

公开(公告)号：US20210122603A1

公开(公告)日：2021-04-29

申请号：US17078855

申请日：2020-10-23

Applicant: GDM S.p.A.

Inventor： Aldo FUSAR POLI ,  Marco ROSANI ,  Matteo PIANTONI

IPC: B65H45/22 ,  B65H23/02 ,  B65H23/032

Abstract: A folding apparatus for a continuous web being fed in a plant for the production of hygienic absorbent articles and intended to be folded into a “V” or “U” shape in a first and in a second longitudinal portion according to a longitudinal folding line parallel to a feeding line of the continuous web comprises a folding section including a first and a second power-driven, movable suction belt and an adjusting system for adjusting a relative position of the longitudinal edges of the continuous web once it has been folded; the adjusting system is configured to adjust the position of the first belt and/or of the second belt depending on at least a first information sent by the first sensor to the computerised control unit.