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    Patents

    Unit for Making Absorbent Pads for Nappies:

    U.S. Patent No. 9,913,760

    05.04.18
    Matteo Piantoni, Albino (Bergamo), Italy; and Valerio Soli, Bologna, Italy.
    Assigned to GDM S.P.A., Bologna, Italy.

    Filed: 4/8/14
    Issued: 3/13/18

    A unit for making absorbent pads for nappies: wherein the absorbent pads each comprise an absorbent material and a discrete layer of superabsorbent material; the unit comprising: a forming drum by which the absorbent pad is formed, the forming drum including a peripheral surface and a suction recess on the peripheral surface; a hood for feeding the absorbent material and facing a portion of the peripheral surface of the forming drum; a first system for metering and feeding the superabsorbent material into the hood; a second system for metering and feeding the superabsorbent material, the second system for metering and feeding the superabsorbent material comprising a feeding duct for intermittently feeding predetermined charges of the superabsorbent material, the feeding duct leading to the hood; wherein the feeding duct is configured such that a flow of superabsorbent material fed into the hood by the feeding duct expands until reaching an extent corresponding to a longitudinal extension of the discrete layer of superabsorbent material; wherein the feeding duct is configured such that the superabsorbent material flows in at a first, inflow speed and out at a second, outflow speed lower than the first, inflow speed.
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    • absorbent
    • pads
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