| 摘要 |
PROBLEM TO BE SOLVED: To provide a papermaking method giving a high-quality paper having suppressed lowering of formation in high yield while preventing the adhesion of pitch to the papermaking machine even in the case of using a papermaking material slurry containing a large amount of small components such as regenerated pulp, pitch and filler and especially suitable for the reuse of used paper and to provide a papermaking assistant to be used in the papermaking method. SOLUTION: The papermaking method comprises the addition of a papermaking assistant containing at least one kind of polymer selected from cationic polymers and anionic polymers having a viscosity-average molecular weight of≥15,000,000 to an aqueous pulp slurry, the dehydration and forming of the obtained paper making raw material slurry in the form of a sheet and the drying of the obtained sheet. The papermaking assistant is a one-pack type agent containing at least one kind of polymer selected from cationic polymers and anionic polymers having a viscosity-average molecular weight of≥15,000,000. COPYRIGHT: (C)2007,JPO&INPIT
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