Layered, absorbent structure
AssigneeThe Procter & Gamble Company
InventorsGianfranco Palumbo, Giovanni Carlucci
Life of this patent
Estimating the term…
Abstract
A thin, layered, absorbent structure comprises first and second layers of fibrous material and an intermediate layer comprising particles of a hydrogelling, absorbent material and particles of a thermoplastic, polymeric, organic material, the first and second fibrous layers extend beyond the intermediate layer laterally to form longitudinal edge portions. The two fibrous layers are bound together with the intermediate layer between them by the melting of the particles of thermoplastic, polymeric, organic material and by means of a continuous line of adhesive extending longitudinally on each longitudinal edge portion.
Claims24
A layered, absorbent structure, characterized in that it comprises, in combination, first and second layers (1, 2) of fibrous material and an intermediate layer (5) comprising a hydrogelling, absorbent material (3) distributed between the first and second fibrous layers (1, 2), at least one of the first and second layers (1, 2) being permeable to liquids, and the intermediate layer (5) also comprising a thermoplastic material (7) which bonds at least the first and second fibrous layers (1, 2) together, with the intermediate layer (5) between them, forming discrete, spaced-apart bond points (9).
A layered, absorbent structure, characterized in that it comprises, in combination, first and second layers (1, 2) of a fibrous material with a basic weight of between about 20 g/m.sup.2 and about 150 g/m.sup.2, as well as an intermediate layer (5) comprising particles of a hydrogelling, absorbent material of which a quantity of between about 30 g/m.sup.2 and about 150 g/m.sup.2 is distributed between the first and second fibrous layers (1, 2), at least one of the first and second fibrous layers (1, 2) being permeable to liquids, the first and second fibrous layers (1, 2) extending beyond the intermediate layer (5) laterally to form longitudinal edge portions (8), the intermediate layer (5) comprising a mixture of hydrogelling, absorbent material (6) and a quantity of between about 5 g/m.sup.2 and about 30 g/m.sup.2 of a finely divided thermoplastic, polymeric, organic material (7), which has a melt flow index (M.F.I.) of at least 25 g/10 min. and is intended to fond at least the first and second fibrous layers (1, 2) together with the intermediate layer (5) between them, forming discrete, spaced-apart bond spots (9), the layered, absorbent structure also being characterized in that the layers of fibrous material (1, 2) are bonded together along each longitudinal edge portion (8) by means of a continuous line of adhesive (10).
Dependencies are inferred from the claim text.