Loading patent…
AssigneeNippon Shokubai Co., Ltd.
InventorsKazushi TORII, Shigeru SAKAMOTO, Kenji TADA, Kazuki KIMURA, Yusuke WATANABE
Estimating the term…
An object of the invention is to provide a technique in which a decrease in physical properties is suppressed or consumer complaints are diminished. A method for filling a particulate water absorbing agent includes a filling step of filling a particulate water absorbing agent into a filling container and a vibrating step of vibrating the filling container at the outside of the filling container, the vibrating step being conducted at least one time between the start and the end of the filling step, in which a vibration condition in the vibrating step satisfies the following conditions (a) and (b): (a) vibration by a vibrating body in contact with the filling container has a vertical directional component and a vibrational angle is within 90°±30°; and (b) total amplitude at no load and a vibration frequency at no load of the vibrating body are set so as to satisfy Equation 1-1 and Equation 2 or Equation 1-2 and Equation 2.
A method for filling a particulate water absorbing agent, the method comprising:
A method for sampling a filled particulate water absorbing agent that is filled in a filling container and has a filling volume of V (cm3), wherein
A filled particulate water absorbing agent, wherein a relative standard deviation of respective water absorption physical property values of particulate water absorbing agents sampled from the same filled particulate water absorbing agent at three or more points satisfies at least one of the following (a) to (d):
Dependencies are inferred from the claim text.