| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for producing recycled pulp, by which sticky foreign matters contained in waste paper of raw material can be reduced to produce the recycled pulp of high quality in a process for producing the recycled pulp. <P>SOLUTION: This method for producing the recycled pulp is characterized by forming bubbles in a pulp suspension by cavitation and contacting the bubbles with skicky foreign matters in the pulp suspension to treat the skicky foreign matters, in a process for producing the recycled pulp. Thereby, impact forces on the collapse of the cavitation bubbles are used to micronize and reduce the skicky foreign matters, and further the stickiness of the sticky foreign matters is lowered with radicals produced on the collapse of the fine bubbles. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
