Water absorption treatment material
Provided is a water absorption treatment material and a method for manufacturing the same, according to which a clump can be formed after use without incurring a decrease in water absorptivity. A water absorption treatment material includes a granular core portion and an embedded portion. A recessed portion is formed on the surface of the granular core portion. The embedded portion is provided in the recessed portion of the granular core portion. The embedded portion contains an adhesive material.
1. A water absorption treatment material comprising:
a granular core portion having a recessed portion on its surface; and
an embedded portion that is provided in the recessed portion and contains an adhesive material,
wherein the granular core portion is exposed to the outside of the water absorption treatment material at a portion at which the recessed portion is not provided.
2. The water absorption treatment material according to claim 1 , wherein
the entirety of the embedded portion is provided so as to fit in the recessed portion.
3. The water absorption treatment material according to claim 1 , wherein
the embedded portion is provided in approximately the entirety of the recessed portion.
4. The water absorption treatment material according to claim 1 , wherein
the granular core portion is approximately cylindrical, and
the recessed portion is groove-shaped and extends in a length direction of the granular core portion.
5. The water absorption treatment material according to claim 4 , wherein
the recessed portion extends along the entirety of the length direction of the granular core portion.
6. The water absorption treatment material according to claim 1 , wherein
the granular core portion has a plurality of said recessed portions, and
the plurality of recessed portions are arranged regularly on the surface of the granular core portion.
7. The water absorption treatment material according to claim 1 , wherein
the recessed portion is intentionally formed on the surface of the granular core portion.
8. The water absorption treatment material according to claim 1 , wherein
on the surface of the granular core portion, a surface area ratio of the portion at which the recessed portion is provided with respect to the entire surface is 10% or more and 90% or less.
9. The water absorption treatment material according to claim 8 , wherein
the surface area ratio is 20% or more and 60% or less.
10. The water absorption treatment material according to claim 1 , wherein
the adhesive material is a water-absorptive polymer.