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US 2004/0167487 A1Published application
Absorbent article with film-like region of chitosan material and process for making the same
AssigneeThe Procter & Gamble Company
InventorsMaurizio Tamburro, Nicola D'Alesio, Antonella Pesce, Achille Di Cintio, Giovanni Carlucci, Andelia Alessandra Tordone
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Abstract
The present invention relates to an absorbent article with an absorbent member, said member having a film-like region comprising chitosan material, and a process for making said absorbent member.
Claims31
A disposable absorbent article comprising:
- a liquid pervious topsheet;
- a liquid impervious backsheet;
- and
- an absorbent member positioned between said topsheet and said backsheet, said absorbent member having a thickness dimension, a first surface being oriented towards said topsheet and an opposed second surface being oriented towards said backsheet, said second surface being separated from said first surface by said thickness dimension,
- said absorbent member comprises at least one film-like region of particles of chitosan material, said particles having a particle size distribution with a mean diameter D(v,0.9) of not more than about 300 μm.
2 more elements
Process for making an absorbent member, said process comprising the steps of:
- (a) forming a precursor web having a first and a second surface, said second surface being approximately aligned opposite to said first surface, and
- (b) applying during process step (a) onto at least one surface of said precursor web a solution or dispersion comprising a chitosan material, and/or
- (b′) applying after process step (a) onto at least one surface of said precursor web a solution or dispersion comprising a chitosan material, and
- (c) drying said precursor web, whereby forming at least one film-like region comprising particles of chitosan material on said surface of said precursor web on which said solution or dispersion of chitosan material was applied in steps (b) and/or (b′),
- said solution or dispersion being applied onto said precursor web in the form of a spray of droplets, said droplets having a droplet size distribution with a mean diameter D(v,0.9) of not more than about 1500 μm.
2 more elements
Dependencies are inferred from the claim text.