Kazushi TORII,Kohei OMORI,Nobuya TANAKA,Shigeru SAKAMOTO,Kenji TADA,Hironori SATO
申请号：
US14914150
公开号：
US20160199529A1
申请日:
2014.08.28
申请国别(地区):
US
年份:
2016
代理人:
摘要：
Provided is a water absorbent resin that is useful to sanitary materials such as a disposable diaper, a sanitary napkin, and a blood absorbent for medical use each having a higher liquid permeability and a higher water absorbing speed. Further provided is a water absorbent resin powder that is useful to sanitary materials such as a disposable diaper, a sanitary napkin, and a blood absorbent for medical use each having increased in absorbency of a liquid and in heat retaining property. A gel grinding device to be used to produce a water absorbent resin, includes: a screw； a feed opening； an extrusion opening； a porous plate； and a barrel, the barrel including a return preventing member provided on an inner surface thereof, and the return preventing member satisfying at least one of specific parameters.
