Patent ID: 7429009

Claim:
A process for production of a water-absorbing material, which is a process for production of a water-absorbing material from a fine powder of a water-absorbent resin wherein the water-absorbing material is a particulate water-absorbing material having particle diameters larger than the fine powder, with the process comprising: a step (a) of adding an aqueous liquid to the fine powder of the water-absorbent resin so that the overall average water content will be in the range of 20 to 60 weight %, whereby particles of the fine powder are agglomerated to thus obtain a hydrous material of the water-absorbent resin having at least two portions with different water contents; and a step (b) of applying a mechanical compression force to the hydrous material and, at the same time, pulverizing it, thereby obtaining particulate agglomerates of the water-absorbing material.