| 摘要 |
PROBLEM TO BE SOLVED: To provide paper excellent in yield, bulkiness, surface smoothness, printing aptitude and oil absorptivity on papermaking. SOLUTION: This regenerated particle aggregates-filled paper is obtained by filling silica-covered regenerated particle aggregates obtained by using de-inked froth discharged from a treating process of waste paper as a main raw material and passing through dehydrating process, drying process, calcining process and crushing process and further depositing silica on the surface of the regenerated particle aggregates so as to contain 1-30 mass% aggregates as paper ash content. The constituting components of the silica-coated regenerated particle aggregates contain calcium, silicon and aluminum by (30-62):(29-55):(9-35) mass ratio. COPYRIGHT: (C)2007,JPO&INPIT
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