A water content of a water-containing gel of a hydrophilic cross-linked polymer is reduced by pressuring (calendaring) it. Then, a gel composition including, for example, a water-containing gel including cross-linked poly(meth)acrylic acid (salt), glycerol (polyhydric alcohol) and polyester fibers (auxiliary...http://www.google.com.au/patents/US6001911?utm_source=gb-gplus-sharePatent US6001911 - Absorbent resin, absorbent material and method of manufacturing the same