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公开(公告)号：US11376165B2
公开(公告)日：2022-07-05
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.
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公开(公告)号：US20250091830A1
公开(公告)日：2025-03-20
申请号：US18811161
申请日：2024-08-21
Applicant: GDM S.p.A.
Inventor： Alessandro ZAVALLONI , Federico Toscani , Eros Rossi
IPC: B65H19/18
Abstract: A method for feeding a production line of absorbent sanitary articles with a layer of a virgin multilayer tape including providing a head free end of the virgin multilayer tape partially unwound from a respective virgin spool; providing a tail free end of a multilayer tape in use; applying a first connecting element on a first layer of the virgin multilayer tape and on a first layer of the multilayer tape in use at the head free end and tail free end; applying a second connecting element on a second layer of the virgin multilayer tape and on a second layer of the multilayer tape in use at the head free end and tail free end; pulling the first layer of the virgin multilayer tape in a first direction; pulling the second layer of the virgin multilayer tape in a second direction.
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Patent Agency Ranking
公开(公告)号：US20250032325A1
公开(公告)日：2025-01-30
申请号：US18782542
申请日：2024-07-24
Applicant: GDM S.p.A.
Inventor： Alessandro ZAVALLONI , Federico Toscani , Eros Rossi
Abstract: An apparatus and method for producing an absorbent sanitary article including a forming surface at least partially permeable to air configured to move along a moving direction between first, second, and third successive forming positions. The apparatus includes a first, second, and third supply ducts for delivering loose absorbent material onto the forming surface at the first, second, and third forming positions, respectively. The apparatus further includes a first suction chamber opposite to the first supply duct with respect to the forming surface and arranged at the first forming position, a second suction chamber opposite to the second supply duct and arranged at the second forming position, and a third suction chamber opposite to the third supply duct at the third forming position. The first, second, and third suction chambers are open on the forming surface and configured to exert a suction through the forming surface.
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公开(公告)号：US20250032324A1
公开(公告)日：2025-01-30
申请号：US18782760
申请日：2024-07-24
Applicant: GDM S.p.A
Inventor： Alessandro ZAVALLONI , Federico Toscani , Eros Rossi
IPC: A61F13/15
Abstract: An apparatus for producing an absorbent sanitary article, including a slick support surface, a forming unit configured to form a multilayer web of an absorbent sanitary article, the multilayer web including a top sheet web, a back sheet web and a plurality of absorbent cores placed between the top sheet web and the back sheet web, and to feed the multilayer web on the support surface, at least one glue dispenser configured to dispense a liquid glue onto the back sheet web and/or onto the top sheet web. The apparatus further includes at least one compression roller adjacent to the support surface and configured to compress the multilayer web on the support surface, the at least one compression roller including a slick cylindrical outer surface.
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公开(公告)号：US11957550B2
公开(公告)日：2024-04-16
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
CPC classification number: A61F13/15658 , A61F13/15699 , A61F13/5323
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.
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公开(公告)号：US11931228B2
公开(公告)日：2024-03-19
申请号：US16965848
申请日：2019-01-17
Applicant: GDM S.p.A.
Inventor： Federico Toscani , Matteo Piantoni , Andrea Duchini , Marco Rosani
CPC classification number: A61F13/15634 , B65H37/04 , A61F2013/1591 , B65H2301/5113 , B65H2406/33
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.
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公开(公告)号：US11191674B2
公开(公告)日：2021-12-07
申请号：US16492018
申请日：2018-01-26
Applicant: GDM S.p.A.
Inventor： Matteo Piantoni , Valerio Soli , Marco Rosani , Federico Toscani , Giuseppe Poli
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 joining the first and second webs, a step of removing any absorbent material that may be present in the channel.
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