| 摘要 |
PROBLEM TO BE SOLVED: To provide a papermaking method improving yield, water filtering property, water squeezing property and enhancing productivity without impairing formation in materials for papermaking comprising much fine fibers and fillers. SOLUTION: The papermaking method comprises addition of a cationic or an amphoteric water soluble polymer with an intrinsic viscosity measured at 25°C of 15-25 dl/g in 1N NaCl aqueous solution obtained by preparing a dispersion of fine particles with a particle size of less than 100μm, which are produced by a dispersion polymerization in an aqueous salt solution in the presence of a polymeric dispersant soluble in the salt solution, and then adding at least one kind selected from an anionic inorganic fine particle, anionic organic fine particle and anionic polyacrylamide based water soluble polymer, to the papermaking material before papermaking process. COPYRIGHT: (C)2008,JPO&INPIT
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