Patent ID: 7576138

Claim:
An absorbent article comprising surface cross-linked superabsorbent polymer (SAP) particles, said superabsorbent polymer particles being made by a method, comprising the steps of: a) providing superabsorbent polymer particles; b) providing a reactor comprising a drum, said drum having a longitudinal axis and further having a cross-section, wherein an irradiation source is provided such that the radiation emitted by said irradiation source is able to reach superabsorbent polymer particles within said drum, said irradiation source being able to emit UV radiation of a wavelength between about 100 nm and about 200 nm; c) feeding said superabsorbent polymer particles into said drum; d) moving said superabsorbent polymer particles in said drum by rotating said drum around its longitudinal axis; e) said superabsorbent polymer particles being irradiated by said irradiation source as the superabsorbent polymer particles are moved within said drum; and f) collecting said superabsorbent polymer particles leaving the drum.