公开(公告)号：US20220395406A1

公开(公告)日：2022-12-15

申请号：US17838468

申请日：2022-06-13

Applicant: GDM S.p.A.

Inventor： Matteo PIANTONI ,  Alessandro ZAVALLONI

IPC: A61F13/15 ,  A61F13/496 ,  A61F13/49 ,  A61F13/539

Abstract: A line for the production of diaper pants including at least one absorbent pad and a plurality of elastic bands, forming a pants-like structure; the production line includes a first forming unit for forming a composite web from which said absorbent pads are obtained, a second unit for forming elastic bands for forming said elastic bands and an assembly line for assembling the pads and the elastic bands to construct the diaper pants; the assembly line includes a plurality of processing units, each including a computerized command and control unit and a computerized high level control unit in communication with the computerized command and control units in the assembly line; the high level control unit is configured to impart to each computerized command and control unit at least one control signal for the respective processing unit as a function of the size of the diaper pants being produced in the production line.

公开(公告)号：US20240123693A1

公开(公告)日：2024-04-18

申请号：US18485476

申请日：2023-10-12

Applicant: GDM S.p.A

Inventor： Matteo PIANTONI ,  Alessandro ZAVALLONI

IPC: B29C65/00 ,  B29C65/08

CPC classification number: B29C66/9511 ,  B29C65/08

Abstract: An ultrasonic welding system and method for making welds on a strip made of polymeric material. The system includes a supporting structure, N welding equipment mounted thereon, and a processor. Each N welding equipment includes a pair of welding heads made of a sonotrode, including a sonotrode welding surface, and an anvil, including an anvil welding surface. One of the two welding heads is movable with respect to the other between a non-operating position and a welding position. A control member is operatively associated with the sonotrode and configured to vibrate the sonotrode at a nominal ultrasonic vibration frequency and to detect a current value of the vibration frequency. A vibration sensor is mounted on the movable welding head. The processor monitors the alignment condition between the sonotrode welding surface and the anvil welding surface by cooperating with the control member and with the vibration sensor.

公开(公告)号：US20240122768A1

公开(公告)日：2024-04-18

申请号：US18485467

申请日：2023-10-12

Applicant: GDM S.p.A

Inventor： Matteo PIANTONI ,  Alessandro ZAVALLONI ,  Paolo CARUANA

IPC: A61F13/15 ,  B65H43/04 ,  G05B19/418

CPC classification number: A61F13/15772 ,  A61F13/15739 ,  A61F13/15764 ,  B65H43/04 ,  G05B19/41875 ,  A61F2013/1578 ,  A61F2013/15796 ,  A61F2013/15853 ,  B65H2301/542 ,  B65H2553/42 ,  B65H2801/57

Abstract: A production line of absorbent sanitary articles and method of predictive detection of defects of absorbent sanitary articles, wherein it is provided to: detect current values of operating parameters which are indicative of the current operation of at least one production device adapted to perform respective production operations on the absorbent sanitary articles being processed along the production line; perform a comparison between the current values of the detected operating parameters and respective predetermined reference values; in the presence of at least one anomalous operating parameter that does not comply with the respective predetermined reference values, identify, among a plurality of possible malfunctioning causes of the line, at least one current malfunctioning cause responsible for the at least one anomalous operating parameter; and make a prediction of any defects in the absorbent sanitary articles being processed along the line starting from the at least one current malfunctioning cause identified.

公开(公告)号：US20240122767A1

公开(公告)日：2024-04-18

申请号：US18485445

申请日：2023-10-12

Applicant: GDM S.p.A

Inventor： Matteo PIANTONI ,  Alessandro ZAVALLONI

IPC: A61F13/15

CPC classification number: A61F13/15772 ,  A61F13/15739 ,  A61F13/15764 ,  A61F2013/1578 ,  A61F2013/15796

Abstract: A production line of absorbent sanitary articles and production control method. The line includes production devices configured to perform production operations on the absorbent sanitary articles; sensors adapted to detect current values of operating parameters indicative of the current operation of the production devices; and a control unit including a memory and a processor configured to perform a comparison between the current values of the operating parameters and respective predetermined reference values stored in the memory and, in the presence of an anomalous operating parameter, to identify, among a plurality of possible malfunctioning causes, a current malfunctioning cause responsible for the anomalous operating parameter. The processor is configured to perform the comparison independently of a detection of any defects in the absorbent sanitary articles and is configured to identify the current malfunctioning cause, among a plurality of possible malfunctioning causes, starting from the anomalous operating parameter.

公开(公告)号：US20240122766A1

公开(公告)日：2024-04-18

申请号：US18488306

申请日：2023-10-17

Applicant: GDM S.p.A

Inventor： Matteo PIANTONI ,  Alessandro ZAVALLONI

IPC: A61F13/15

CPC classification number: A61F13/15577 ,  A61F2013/15869

Abstract: An apparatus for mutually welding at least two elements of an absorbent sanitary item, including a supporting structure, a first welding member including a first welding surface, and a second welding member including a second welding surface. The second welding member is movable with respect to the first welding member between a non-operating position, in which the second welding surface is spaced apart from the first welding surface to allow at least two elements of the absorbent sanitary item to be positioned above the first welding surface, and a welding position, in which the second welding surface is in contact with the first welding surface to allow welding the at least two elements. One of the welding members includes a yielding coupling element configured to allow a relative displacement between the first and second welding surfaces as a result of the mutual contact between the second and first welding members.

公开(公告)号：US20230000693A1

公开(公告)日：2023-01-05

申请号：US17852830

申请日：2022-06-29

Applicant: GDM S.p.A.

Inventor： Matteo PIANTONI ,  Alessandro ZAVALLONI

IPC: A61F13/15

Abstract: A composite web including: a first continuous web; at least one molded segment having at least one protrusion and a base portion at least partly delimiting the protrusion, the molded segment being obtained from a second continuous web; the molded segment being joined to the first continuous web by the base portion, the first continuous web and the molded segment delimiting at least one cavity at the protrusion.

公开(公告)号：US20240425315A1

公开(公告)日：2024-12-26

申请号：US18750713

申请日：2024-06-21

Applicant: GDM S.P.A.

Inventor： Alessandro ZAVALLONI ,  Agostino AIOLFI

IPC: B65H19/18 ,  A61F13/15 ,  B65H19/20

Abstract: A splicing device includes a head portion provided with a first slot, configured for the passage of a first material, and with a second slot, configured for the passage of a second material; the splicing device includes a first retaining member for holding an edge of the first material, and a second retaining member for holding an edge of the second material, each having a respective retaining surface, configured to vary its orientation from a first configuration in which it is oriented towards the head portion of the splicing device to receive a respective edge, to a second configuration in which the retaining surface is oriented in such a way as to position the respective edge of one of the two between the first material and the second material so it confronts the other, and vice versa.

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：US20240366435A1

公开(公告)日：2024-11-07

申请号：US18655737

申请日：2024-05-06

Applicant: GDM S.P.A.

Inventor： Alessandro SACCOMANI ,  Alessandro ZAVALLONI

IPC: A61F13/15 ,  B65G47/244 ,  B65G47/32 ,  B65G47/52 ,  B65G47/84

Abstract: A method for processing a discrete segment of material for absorbent articles comprises picking up the segment from a first succession of segments disposed at a first spacing from each other; releasing the segment to define a second succession of segments disposed at a second spacing from each other; rotating the segment carried out between the step of picking up and the step of releasing and which involves disposing the segment from a first configuration, corresponding to the configuration of the segment of the first succession, to a second configuration, rotated relative to the first configuration and corresponding to the configuration of the segment of the second succession; between the step of picking up and the step of releasing, accelerating the segment and decelerating the segment; the rotating the segment being carried out simultaneously with at least one between the accelerating and the decelerating.

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.