| 摘要 |
PROBLEM TO BE SOLVED: To provide bookpaper which has high whiteness and bulkiness by adding recycled particles. SOLUTION: The bookpaper is made of base paper containing a filler. The filler is obtained from deinked floss as a main raw material through dehydration, drying, combustion and grinding process. The combustion process comprises at least two steps of combustion processes having a first combustion furnace 14 and at least a later second combustion furnace 32 combusting the deinked floss combusted in the first combustion furnace. The first combustion furnace 14 includes recycled particles obtained by the process of manufacturing the recycled particles by carrying out combustion at a temperature ranging from 300°C or above to under 500°C. COPYRIGHT: (C)2011,JPO&INPIT
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