SAP evaluation apparatus

A superabsorbent polymer (SAP) evaluation apparatus comprising:

• a main body installed with a lifting bar that is configured to be raised or lowered;
• a container portion installed under the lifting bar in the main body, comprising an internal containing space configured to contain an absorber;
• an operating portion connected to the lifting bar, comprising:
• a lifting plate that is configured to be raised or lowered within the internal containing space and to apply pressure to the absorber;
• and an injection portion configured to inject an ink in a direction of the absorber;
• a dispersion measurement portion for measuring dispersion of the ink through the absorber;
• and
• a controller installed on the main body configured to measure absorption of the ink into the absorber and to measure a swelling capacity of the absorber while the ink is injected into the absorber,
• wherein the absorber is one or more of a superabsorbent polymer (SAP) or a SAP composite, and
• wherein the controller is configured to:
• obtain a first height value at which the ink is absorbed into the superabsorbent polymer while the superabsorbent polymer is contained in the containing space;
• to obtain a second height value at which the ink is absorbed into the SAP composite while the SAP composite is contained in the containing space;
• and to determine that the SAP composite is in a normal condition if a difference between the first height value and the second height value is less than a first set distance and a dispersion distance of the ink through the SAP composite measured by the dispersion measurement portion is less than a second set distance.