| 摘要 |
<p>The present invention provides a method for manufacturing a paper board, wherein the paperboard is provided with an excellent sizing property and an excellent showing performance even if under a condition of using a paper pulp containing a lot of aluminium component or a condition of not adding calcium carbonate. The method for manufacturing a paper board comprises the steps of using a polymerized component at least containing (methyl) acrylamide (a1) and diallyl amine or salt thereof to obtain (methyl) acrylamide copolymer and ketene dipolymer sizing agent (B), and manufacturing papers with a base material paper pulp containing waste paper pulp and aluminium atoms converted for more than one wt.% from 16 aluminum sulfate hydrate relative to the drying weight of the base material paper pulp under a PH value of 6-8.</p> |
