Super absorbent polymer film and absorbent article comprising the same
The present disclosure relates to a super absorbent polymer film having excellent moisture absorption and to an absorbent article excellent in feeling capable of reducing skin rashes and other irritations generated when warmed by the wearer's body by including the super absorbent polymer film to improve external dampness. The absorbent article includes the super absorbent polymer film in addition to the absorbent material, so that dampness from the outside is remarkably reduced.
1 . A super absorbent polymer film, which is a single layer, and has a thickness of 10 TO 200 μm and a moisture absorption of 10 to 100 g/m 2 measured according to KS F 2611 standard,
wherein the super absorbent polymer film is prepared by a preparation method including the steps of: preparing a monomer composition by mixing an acrylic acid-based monomer having at least partially neutralized acidic groups, a cellulose-based thickener, a moisturizing agent, an internal cross-linking agent, a polymerization initiator, and a solvent; casting the monomer composition on a substrate; polymerizing the monomer composition by irradiating heat and/or light to form a hydrogel polymer, wherein drawing is performed during the polymerizing; and drying the hydrogel polymer film.
2 . The super absorbent polymer film of claim 1 ,
which has a moisture content of 1 to 15% and a tensile strength of 5 to 50 MPa.
3 . An absorbent article comprising
a liquid impermeable back sheet; a breathable waterproof film; an absorbent material containing a super absorbent polymer powder and pulp; and a liquid permeable top sheet,
wherein the super absorbent polymer film of claim 1 is included between the liquid impermeable back sheet and the breathable waterproof film and/or between the breathable waterproof film and the absorbent material.
4 . The absorbent article of claim 3 ,
wherein the super absorbent polymer film is laminated on one side of the liquid impermeable back sheet; and/or on one side or both sides of the breathable waterproof film.
5 . The absorbent article of claim 3 ,
wherein the super absorbent polymer film is laminated on one side of the breathable waterproof film, and
air permeability of the laminated super absorbent polymer film and breathable waterproof film is 3000 to 5000 g/m 2 ·24 hr.
6 . The absorbent article of claim 3 ,
wherein the liquid impermeable back sheet is a nonwoven fabric having a pore size of 20 to 1000 μm.
7 . The absorbent article of claim 3 ,
wherein the breathable waterproof film has air permeability of 2000 to 5000 g/m 2 ·24 hr.
8 . The absorbent article of claim 3 ,
wherein the absorbent material contains 10 to 90 wt % of the super absorbent polymer powder.
9 . The absorbent article of claim 3 ,
wherein the liquid permeable top sheet has a basis weight of 15 to 30 g/m 2 .