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US 12,653,724 B2Granted
Method and apparatus for producing fluff-free absorbent cores
AssigneeFameccanica.Data S.p.A.
InventorsDiego Gualteri, Alessandro Cipriani
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Abstract
A method and apparatus for producing fluff-free absorbent cores for absorbent sanitary articles, wherein loose unbound fibers and superabsorbent granular material dispersed in the loose unbound fibers are deposited on a movable surface and subsequently the fibers are mixed and bound together in such a way as to form an absorbent structure of bound fibers in which superabsorbent granular material is mixed and incorporated.
Claims4
An apparatus for producing fluff-free absorbent cores for absorbent sanitary articles, comprising:
- a fiber deposition unit configured to deposit loose unbound fibers onto a movable surface;
- a dispensing device configured to apply superabsorbent granular material into said loose unbound fibers,
- a mixing unit configured to mix said loose unbound fibers and the superabsorbent granular material deposited on said movable surface, and
- a fixing unit arranged downstream of said mixing unit and configured to bind said loose unbound fibers together so as to form an absorbent structure of bound fibers in which the superabsorbent granular material is incorporated,
- wherein the fixing unit is configured to carry out binding together said loose unbound fibers by a thermal or mechanical process,
- wherein the movable surface includes a movable suction surface fluidly connected to a suction source, and
- wherein the fiber deposition unit comprises nozzles configured to project the loose unbound fibers onto the movable suction surface fluidly connected to the suction source, by pressurized air jets.
4 more elements
Dependencies are inferred from the claim text.