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Method of producing water absorbent resin
专利权人:
Sumio Okuda;Kunihiko Ishizaki;Kozo Nogi;Shinichi Fujino;Syuji Kanzaki
发明人:
Sumio Okuda,Syuji Kanzaki,Kunihiko Ishizaki,Shinichi Fujino,Kozo Nogi
申请号:
US13635045
公开号:
US09453091B2
申请日:
2011.03.17
申请国别(地区):
US
年份:
2016
代理人:
摘要:
A method for producing a water absorbent resin, the method including a polymerization step, a drying step, a classification step, and a surface crosslinking step. The classification step carried out before or after the surface crosslinking step requires use of a metal sieve mesh having stretch tension from 35 to 100 N/cm, in which an air jet cleaner or an air jet brush cleaner and plural tapping balls or tapping blocks are installed below the metal sieve mesh, a classification aid particle having specific gravity different from that of the water absorbent resin powder is added, and a fine powder of the water absorbent resin and the classification aid particle are removed.
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