METHOD AND APPARATUS FOR MANUFACTURING WATER ABSORPTION TREATMENT MATERIAL
A manufacturing apparatus is an apparatus for manufacturing a water absorption treatment material that is composed of a plurality of grains, and includes a granulation machine and a coating machine. The granulation machine granulates a granulation material and thereby forms a granule (core portion) that constitutes each of the grains The coating machine attaches a coating material that contains an adhesive material to a surface of the core portion formed by the granulation machine, and thereby forms a coating portion that covers the surface of the core portion. The granulation machine forms the core portion that has a through hole that extends through the core portion.
1 . A method for manufacturing a water absorption treatment material that is composed of a plurality of grains, the method comprising:
a granulation step of granulating a granulation material, and thereby forming a granule that constitutes each of the grains; and
a coating step of attaching a coating material that contains an adhesive material to a surface of the granule formed in the granulation step, and thereby forming a coating portion that covers the surface of the granule,
wherein, in the granulation step, the granule that has a through hole that extends therethrough is formed.
2 . The method for manufacturing a water absorption treatment material according to claim 1 ,
wherein, in the granulation step, the granule is formed using a granulation machine.
3 . The method for manufacturing a water absorption treatment material according to claim 2 ,
wherein the granulation machine includes a die in which a die hole that allows the granulation material to pass therethrough is formed, and
a core member that extends along a central axis of the die hole is provided within the die hole.
4 . The method for manufacturing a water absorption treatment material according to claim 3 ,
wherein the core member is provided so as to extend entirely through the die hole in a thickness direction of the die.
5 . The method for manufacturing a water absorption treatment material according to claim 3 ,
wherein the core member is provided so as to extend only partially through the die hole in a thickness direction of the die.
6 . The method for manufacturing a water absorption treatment material according to claim 5 ,
wherein the core member does not extend to an inlet opening surface of the die hole.
7 . The method for manufacturing a water absorption treatment material according to claim 5 ,
wherein the core member extends to an outlet opening surface of the die hole.
8 . The method for manufacturing a water absorption treatment material according to claim 3 ,
wherein a diameter of the core member increases monotonously from an inlet side toward an outlet side of the die hole.
9 . An apparatus for manufacturing a water absorption treatment material that is composed of a plurality of grains, the apparatus comprising:
a granulation machine that granulates a granulation material and thereby forms a granule that constitutes each of the grains; and
a coating machine that attaches a coating material that contains an adhesive material to a surface of the granule formed by the granulation machine, and thereby forms a coating portion that covers the surface of the granule,
wherein the granulation machine forms the granule that has a through hole that extends therethrough.
10 . The apparatus for manufacturing a water absorption treatment material according to claim 9 ,
wherein the granulation machine includes a die in which a die hole that allows the granulation material to pass therethrough is formed, and
a core member that extends along a central axis of the die hole is provided within the die hole.
11 . The apparatus for manufacturing a water absorption treatment material according to claim 10 ,
wherein the core member is provided so as to extend entirely through the die hole in a thickness direction of the die.
12 . The apparatus for manufacturing a water absorption treatment material according to claim 10 ,
wherein the core member is provided so as to extend only partially through the die hole in a thickness direction of the die.
13 . The apparatus for manufacturing a water absorption treatment material according to claim 12 ,
wherein the core member does not extend to an inlet opening surface of the die hole.
14 . The apparatus for manufacturing a water absorption treatment material according to claim 12 ,
wherein the core member extends to an outlet opening surface of the die hole.
15 . The apparatus for manufacturing a water absorption treatment material according to claim 10 ,
wherein a diameter of the core member increases monotonously from an inlet side toward an outlet side of the die hole.
16 . The apparatus for manufacturing a water absorption treatment material according to claim 10 ,
wherein the die is provided with a plurality of the die holes, and
the plurality of die holes include a first die hole that has a first diameter and a second die hole that has a second diameter that is smaller than the first diameter.
17 . The apparatus for manufacturing a water absorption treatment material according to claim 16 ,
wherein the granulation machine includes: a rotation axis that is positioned at a center portion of the die; and a roller that presses the granulation material into each of the die holes while revolving about the rotation axis.
18 . The apparatus for manufacturing a water absorption treatment material according to claim 17 ,
wherein the second die hole is provided at a position farther from the rotation axis than the first die hole is.
19 . The apparatus for manufacturing a water absorption treatment material according to claim 9 ,
wherein the coating machine also attaches the coating material to an inner face of the through hole.
20 . The apparatus for manufacturing a water absorption treatment material according to claim 9 ,
wherein the coating machine attaches the coating material to an inner face of the through hole so as not to close the through hole.