Patents Assigned to GDM S.p.A.
  • Patent number: 10342709
    Abstract: A machine for making absorbent sanitary articles includes a feed conveyor on which a continuous web of material for making the articles is advanced along a feed line in a first direction. A forming and application unit forms and applies by which at least one pair of accessory elements for each article and includes a device for feeding a continuous succession of accessory elements and a conveying unit. The conveying unit includes a conveyor roller for the continuous succession of accessory elements, and a separating device defined by a first and a second spacer roller which are substantially tangent to the conveyor roller at a first and a second pickup station, respectively. The first and the second spacer roller have retaining and alternate movement devices including respective pickup pads which are slidable along a second direction and which are driven by a respective linear electric motor.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: July 9, 2019
    Assignee: GDM S.p.A.
    Inventors: Matteo Piantoni, Alberto Perego
  • Patent number: 10259185
    Abstract: In a unit for making sections of padding for absorbent sanitary articles comprising a first rotary conveyor for feeding and forming a continuous succession of outer pads, comprising at least one layer, a second rotary conveyor for feeding and forming a continuous succession of inner pads comprising two layers, a third rotary conveyor for the pads defining a position for superposing the outer pads and the inner pads, there are compressing means for the two-layer inner pads upstream of the superposing position and second compressing means for the superposed pads downstream of the superposing position.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: April 16, 2019
    Assignee: GDM S.P.A.
    Inventors: Marco Rosani, Matteo Piantoni, Diego Sacchi, Gabriele Pastrello, Alberto Perego
  • Publication number: 20190060133
    Abstract: The unit for feeding lateral flaps of a hygiene absorbent article having: an input conveyor of a first continuous strip; a cutting assembly provided with a receiving drum, of the first suction-pick up heads that hold the lateral flaps and which are mounted to as to be radially movable on the receiving drum, and at least one blade which cyclically cuts the first strip crosswise; a spacer assembly having a pair of spacer drums provided with second suction-pick up heads that receive the lateral flaps of the receiving drum; and an actuator system, which cyclically moves each first suction-pick up head radially between a radial pick-up position and a radial release position, in the area of an output station.
    Type: Application
    Filed: February 9, 2017
    Publication date: February 28, 2019
    Applicant: GDM S.p.A.
    Inventors: Matteo Piantoni, Valerio Soli, Federico Tordini, Marco Rosani, Mauro Pietralunga
  • Patent number: 10213346
    Abstract: A unit for forming absorbent sanitary articles including a drum rotatable about its axis of rotation and having a circumferential peripheral surface movable along a feed direction, first feeding means for feeding a succession of pairs of panels of material facing the circumferential peripheral surface and configured to position each pair in such a way that the respective two panels are facing each other and transversely aligned with the feed direction and second feeding means for feeding a continuous web of material suitable for defining at least part of the main body of an absorbent sanitary article, and configured to position the web on the circumferential peripheral surface of the drum in such a way that each panel projects partly sideways from the web.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: February 26, 2019
    Assignee: GDM S.p.A.
    Inventors: Matteo Piantoni, Valerio Soli
  • Patent number: 10166698
    Abstract: A crushing mill for crushing fibrous material for a unit for forming absorbent cores in a machine which makes absorbent sanitary articles, including a casing having an infeed opening and an outfeed opening for the fibrous material, a rotor rotatable about its axis of rotation and housed in the casing at an intermediate position between the infeed opening and the outfeed opening. Also provided is an auxiliary opening operatively interposed between the infeed opening and the outfeed opening, with reference to a direction of rotation of the rotor, and adapted to allow feeding a particulate absorbent material into an intermediate zone between the infeed opening and the outfeed opening.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: January 1, 2019
    Assignee: GDM S.P.A.
    Inventors: Matteo Piantoni, Valerio Soli
  • Patent number: 10111785
    Abstract: Maker machine to manufacture hygiene absorbent articles and having: a feeding line which feeds a continuous strip of impermeable material, which is intended to define a succession of sheets of impermeable material; and at least one operating unit which feeds a corresponding component of the hygiene absorbent articles to the sheets of impermeable material carried by the feeding line by way of an application device; the application device has at least one sucking pick-up head and a conveyor provided with an annular guide which is arranged in fixed position along an application path, a slide which supports the sucking pick-up head and is coupled to the guide so as to freely slide along the guide, and a linear electric motor, which has a stator that is arranged in a fixed position along the guide and a mobile slider which is electro-magnetically coupled to the stator so as to receive, from the stator a driving force and is rigidly connected to the slide.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: October 30, 2018
    Assignee: GDM S.p.A.
    Inventors: Matteo Piantoni, Valerio Soli
  • Patent number: 10028863
    Abstract: A machine for making absorbent sanitary articles, where each article includes components progressively positioned relative to each other and assembled along a production line. The machine includes a programmable electronic controller device having a shift register, at least one optical inspection system connected to the programmable electronic controller device, and an operator interface connected to the electronic controller. The programmable electronic controller device generates a machine sync signal, a trigger signal for activating the optical inspection system in phase with the sync signal and a shift register shift command. The optical inspection system receives the trigger signal and has a defined maximum response time which produces at least one band of uncertainty. The operator sets with the operator interface the instant of activating the shift register shift command outside the band of uncertainty and between two consecutive sync signals defining a machine step.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: July 24, 2018
    Assignee: GDM S.p.A.
    Inventors: Matteo Piantoni, Alberto Perego
  • Patent number: 9999550
    Abstract: The machine according to the invention, for making absorbent sanitary articles, comprises a device for forming inside the absorbent article a pad composed of a plurality of superposed layers of absorbent material, a transfer roller located downstream of the device and having a cylindrical lateral surface, and a wrapping unit which is located downstream of the transfer roller and by which the pad is placed between a first sheet of impermeable or permeable material and a second sheet of permeable material; the transfer roller transfers the internal pad from the forming device to the wrapping unit, the forming device also comprises, for each layer of absorbent material, a respective forming unit for cutting into lengths a continuous web of absorbent material fed into the selfsame unit and for transferring the lengths to the transfer roller; the lengths of material fed by each unit are mutually superposed on the lateral surface of the transfer roller so as to form the layers of the pad and the pad itself.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: June 19, 2018
    Assignee: GDM S.P.A.
    Inventors: Matteo Piantoni, Alberto Perego
  • Patent number: 9968491
    Abstract: A machine for making absorbent sanitary articles includes a device for feeding a continuous strip to a conveyor roller and to a device for cutting the strip into first and second pieces. A unit forms and applies at least a pair of first and second pieces, aligned and spaced by a distance (d), for each absorbent article A first and a second roller each comprising a plurality of units pick up and successively release of first and the second pieces. A plurality of concentric units rotating, independently of each other, about a shared axis of rotation, each carries at least one unit. A motor defines a respective law of motion for each of the units and a mechanism translates the units, between a position for picking up the pieces, at the conveyor roller, and a position for releasing the pieces, at the forming and applying unit.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: May 15, 2018
    Assignee: GDM S.P.A.
    Inventors: Matteo Piantoni, Alberto Perego
  • Patent number: 9913760
    Abstract: A unit for making absorbent pads for nappies including a forming drum by which the absorbent pad is formed and in turn including on its peripheral surface one or more suction recesses; at least one hood for feeding the absorbent material and peripherally facing at least part of the peripheral surface of the drum; and a duct which leads to the hood and which can intermittently feed predetermined charges of a superabsorbent material; the feeding duct is configured in such a way that the flow of superabsorbent material fed into the hood expands until reaching an extent corresponding to the longitudinal extension of the at least one discrete layer of the absorbent pad.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: March 13, 2018
    Assignee: GDM S.P.A.
    Inventors: Matteo Piantoni, Valerio Soli
  • Patent number: 9827148
    Abstract: A machine for making absorbent sanitary articles, where each article includes components progressively positioned relative to each other and assembled along a production line. The machine includes a programmable electronic controller device having a shift register, at least one optical inspection system connected to the programmable electronic controller device, and an operator interface connected to the electronic controller. The programmable electronic controller device generates a machine sync signal, a trigger signal for activating the optical inspection system in phase with the sync signal and a shift register shift command. The optical inspection system receives the trigger signal and has a defined maximum response time which produces at least one band of uncertainty. The operator sets with the operator interface the instant of activating the shift register shift command outside the band of uncertainty and between two consecutive sync signals defining a machine step.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: November 28, 2017
    Assignee: GDM S.p.A.
    Inventors: Matteo Piantoni, Alberto Perego
  • Publication number: 20170304125
    Abstract: A method for making sanitary articles, includes: feeding along a longitudinal direction of movement a first web of material defining a main body of the article; feeding a pair of longitudinal strips; dividing each strip into a succession of trapezoidal pieces adjacent each other and each having a long base and a short base so the pieces of each strip can be divided alternately into first pieces having a first orientation and second pieces having a second orientation opposite to the first orientation; spacing the pieces of each strip from each other; rotating the first or second pieces of each strip by 180° in plane to give the pieces of the first strip the first orientation and the pieces of the second strip the second orientation; applying each piece on a first face so the long base protrudes laterally from the edge of the first web.
    Type: Application
    Filed: October 22, 2015
    Publication date: October 26, 2017
    Applicant: GDM S.p.A.
    Inventors: Matteo PIANTONI, Valerio SOLI
  • Patent number: 9776824
    Abstract: A method and unit for folding light incontinence pads having a substantially rectangular shape elongate according to a longitudinal axis and comprising a central absorbent pad and an outer edge, according to which a first end portion of the incontinence pad is folded on a central portion of the incontinence pad about a first fold line transversal to the longitudinal axis, a second end portion of the incontinence pad is folded on the first end portion about a second fold line transversal to the longitudinal axis, and elasticated segments of the edge located between the first and second fold lines are folded on the central portion; the step of folding the elasticated segments of the edge being between a first sub-step of partly folding the first end portion and a second sub-step of completely folding the first end portion on the central portion.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: October 3, 2017
    Assignee: GDM S.p.A.
    Inventors: Marco Rosani, Gabriele Pastrello, Luca Bugini, Matteo Piantoni, Alberto Perego
  • Patent number: 9750645
    Abstract: In a method for making absorbent sanitary articles, each absorbent article includes a pair of side tabs fed from a single continuous tape divided by oblique cuts into first and second series of side tabs oriented in opposite directions. The side tabs of the first and second series are then fed along a first path and along a second path, respectively and are first rotated by 180° and then combined and transferred separately along a third, common path along which each tab of the first series has a respective tab of the second series placed alongside it to form a pair of side tabs. At least one of the side tabs of each pair is moved sideways such that each pair of side tabs is applied to a continuous web of material at a predetermined spacing.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: September 5, 2017
    Assignee: GDM S.P.A.
    Inventors: Matteo Piantoni, Alberto Perego
  • Patent number: 9733624
    Abstract: A method for corrective action on the operation of a line for the production of absorbent sanitary articles, comprises capturing at least one image of each article being fed out of the line; using the image to define first parameters indicating the positioning and/or assembly and/or shape of at least one respective component; detecting a production defect if at least one of the first parameters is outside a respective acceptability range; identifying second, line operating parameters which are used to indicate if the first parameter is outside the respective acceptability range; comparing the line operating parameters with respective third, reference parameters indicating optimum line operation; using the comparison to derive a map of abnormal operating parameters; checking if each combination of abnormal operating parameters indicates a respective cause of malfunction of the line; defining a respective corrective action.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: August 15, 2017
    Assignee: GDM S.p.A.
    Inventors: Marco Rosani, Gabriele Pastrello, Matteo Piantoni, Alberto Perego
  • Patent number: 9655786
    Abstract: An ultrasonic sealing system in a machine for making composite webs in the production of absorbent sanitary articles includes a contact roller having an axis of rotation and including a central portion and a peripheral portion which is supported by the central portion and includes an outer surface forming the outer surface of the contact roller itself. The contact roller includes a sealing pattern on the outer surface of the peripheral portion and also includes springs acting between the central portion and the peripheral portion, which is supported by the peripheral portion by means of the springs.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: May 23, 2017
    Assignee: GDM S.p.A.
    Inventors: Matteo Piantoni, Valerio Soli
  • Publication number: 20160045379
    Abstract: An absorbent sanitary article having a main direction of extension comprises a permeable inner layer, an impermeable outer layer, an absorbent pad interposed between the inner layer and the outer layer and comprising a first layer of non-woven fabric, a second layer of non-woven fabric partly joined to the first layer of non-woven fabric, and an absorbent core interposed between the first and second layers of non-woven fabric; the absorbent core comprises a spread of absorbent polymer material and a third layer of non-woven fabric interposed between the first and second layers of non-woven fabric.
    Type: Application
    Filed: April 17, 2014
    Publication date: February 18, 2016
    Applicant: GDM S.p.A.
    Inventors: Matteo PIANTONI, Valerio SOLI
  • Patent number: 9149394
    Abstract: In a machine for making absorbent sanitary articles, such as nappies for babies or incontinence pads for adults, sanitary towels or the like, a plurality of operating stations are equipped with cutting and/or sealing devices for the materials of which the articles consist; all or some of the operating stations each being equipped with at least one laser unit for performing the cutting and/or sealing operation; the laser units all being connected to the same laser source.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: October 6, 2015
    Assignee: GDM S.P.A.
    Inventors: Marco Rosani, Davide Guarnieri, Luca Bugini, Davide Russo, Matteo Piantoni, Alberto Perego
  • Patent number: 9084697
    Abstract: Absorbent pads for personal sanitary items are made by a device that comprises a set of pick-up heads (2) moving along a feed path (P), a first application unit (5) and a second application unit (6) by which a respective first portion (4a) and second portion (4b) of an absorbent pad are placed on the pick-up head (2), and a motion-inducing mechanism, coupled to the pick-up head (2), which is designed to bring about a relative displacement between the first portion (4a) and the second portion (4b), so that when the second portion (4b) is placed over the first portion (4a), the one will be covered by the other only in part. A method of making absorbent pads using the device in question includes the steps of preparing a first portion (4a) and a second portion (4b) of an absorbent pad, then placing the second portion (4b) over the first portion (4a) in such a way that the first portion (4a) is covered only in part by the second portion (4b).
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: July 21, 2015
    Assignee: GDM S.p.A.
    Inventors: Matteo Piantoni, Luca Pedretti
  • Publication number: 20150166294
    Abstract: A device for processing a web of material for making nappies includes a rotary shaft having a first axis, a plurality of pads for receiving and holding the web. The pads are rotatable about the first axis and are movable relative to the first axis during operation. A plurality of anvils, each interposed between two consecutive pads, are connected with the rotary shaft and are rotatable with it about the first axis. A unit acting in conjunction with the anvils cuts the web into lengths. A first motor is mounted inside the device and connected to the pads to translate the pads along a radial direction at right angles to the first axis and a second motor is mounted inside the device and connected to the pads to rotate the pads about a second axis coinciding with the radial direction.
    Type: Application
    Filed: July 15, 2013
    Publication date: June 18, 2015
    Applicant: GDM S.p.A
    Inventors: Alberto Perego, Matteo Piantoni