| abstract |
The absorbent sheet 10 includes a fibrous material 11 and particles of superabsorbent polymer 12. The particles 12 are dispersed in the thickness direction of the sheet 10 in a state of being retained in the fiber material 11 and are not substantially exposed to the surface of the sheet 10. In at least some of the particles 12, there is formed a space 13 around them, the size of which is large enough to absorb the increase in the volume due to the swelling caused by the absorption of the particles 12. It is preferable that the particles 12 of the superabsorbent polymer have a particle size distribution, and particles having a particle size of 250 μm or more occupy 40% or more by weight.n n n n Absorbent Sheet, Super Absorbent Polymer, Void, Swell |