| 摘要 |
PURPOSE:To make solubility of a water-soluble vinyl series polymer easy, by a method wherein the water-soluble vinyl series polymer is made to retain for more than 3min, pulverized and made into a fine particle in a sphere of a vertical cutting machine constituted with a stationary blade and rotating blade. CONSTITUTION:A polymer obtained by polymerizing a water solution of a water-soluble vinyl series monomer is pulverized into the diameter of 3-5mm by a vertical cutting machine circumscribing a screen 4 provided on the external circumference along the circumference in which rotating blade 1 rotates and a sphere having the identical diameter with the circular arc of the screen 4 and having a retention sphere of more than 3min. Then cut-off polymer gels, having diameter smaller than that DS of a hole of the screen 4, among those being moved within a sphere (a) are splashed in an external direction through centrifugal force, passed through the hole of the screw 4, discharged from the sphere (a) and separated from the bulky polymer gels. The polymer gels can be pulverized and made into fine particles. |
