公开(公告)号：US20230265588A1

公开(公告)日：2023-08-24

申请号：US18040229

申请日：2021-08-03

Applicant: GDM S.P.A.

Inventor： Paolo CARUANA ,  Francesco Giardini ,  Matteo PIANTONI ,  Marco ROSANI ,  Alessandro ZAVALLONI

IPC: D04H1/56 ,  D04H1/4291 ,  D04H1/70 ,  D04H1/407 ,  D01D5/098 ,  A24C5/46

CPC classification number: D04H1/565 ,  D04H1/4291 ,  D04H1/70 ,  D04H1/407 ,  D01D5/0985 ,  A24C5/465

Abstract: A method for making a composite web comprises the steps of



melt blowing a first flow of thermoplastic material including said first thermoplastic material towards at least one collecting suction surface moving in a feed direction;
dispensing a flow of particulate material including a particulate material towards the collecting suction surface in such a way as to intercept the first flow of thermoplastic material in an intercept zone; the first flow of thermoplastic material and the flow of particulate material intercept each other in the intercept zone at an intercept angle of between 1 and 90 sexagesimal degrees, preferably between 15 and 40 sexagesimal degrees.

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：US20210145652A1

公开(公告)日：2021-05-20

申请号：US16491999

申请日：2018-03-19

Applicant: GDM S.p.A.

Inventor： Matteo PIANTONI ,  Valerio SOLI ,  Marco ROSANI ,  Federico TOSCANI ,  Giuseppe POLI

IPC: A61F13/15 ,  A61F13/532

Abstract: A method for forming an absorbent pad including a first layer, a second layer and an absorbent material interposed between the first and the second layer and arranged according to a spreading pattern M1 having at least one channel which is free of absorbent material, includes a step of feeding a first web, intended to form the first layer of the pad; a step of feeding a second web, intended to form the second layer of the pad; a step of spreading the absorbent material on the first web according to the spreading pattern M1; a step of spreading an adhesive on the first web according to a gluing pattern; a step of welding the first web and the second web according to a welding pattern M3 including at least one welding zone at the channel on the pad.

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.