It is a main object of the present invention, suitable properties, in addition to excellent absorption performance general water-absorbent resin, which has a strong particle strength moderate particle size, as well, and further as water-absorbing agents in sanitary applications fixation of the fibers, and water-absorbent resin having excellent fluidity as a powder, is that as well as a manufacturing method thereof. Furthermore, it is also an object of the invention to provide an absorbent article and absorbent, using a water-absorbent resin such. Aspect ratio is 1.1 to 200, and, median particle diameter (d) is the aggregated primary particles of 50~600μm, the aspect ratio is 1.0 to 3.0, and the median particle diameter ( water-absorbing resin D) has the form of 100~2000μm.本発明の主な目的は、衛生材料用途での吸水剤として好適な特性として、吸水性樹脂としての一般的な吸収性能に優れるうえに、適度な粒子径、並びに強い粒子強度を有し、さらに繊維との固着性、及び粉体としての流動性に優れる吸水性樹脂、並びにその製造方法を提供することにある。さらに、このような吸水性樹脂を用いた吸収体、及び吸収性物品を提供することも目的とする。アスペクト比が1.1~200で、且つ、中位粒子径(d)が50~600μmの1次粒子が凝集した、アスペクト比が1.0~3.0で、且つ、中位粒子径(D)が100~2000μmの形態を有する吸水性樹脂。
