| 摘要 |
PROBLEM TO BE SOLVED: To provide an inorganic particle aggregate excellent in yield, high bulkiness, surface flatness, printing aptitude and oil absorption on papermaking, which can not be obtained by using conventional regenerated inorganic particles, by using waste materials such as papermaking sludge, as raw materials. SOLUTION: This inorganic particle aggregate obtained by burning the waste materials contains (30-82:9-35:9-35) mass ratio of calcium, silica and aluminum based on their oxides, and also the total of content of the calcium, silica and aluminum is≥90 mass%. COPYRIGHT: (C)2007,JPO&INPIT
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