| 摘要 |
A method to treat a sizing agent in connection with its use in a sizing composition in the manufacturing of sized paper, cardboard or paperboard, which sizing agent is constituted by at least one alkyl keten dimer (AKD), and which sizing agent exhibits a melting jpoint above 20 DEG C. According to the invention, said sizing agent is heated to a temperature above its melting point, where after the sizing agent is maintained at a temperature above a phase transition temperature for phase transition to solid state at least up to charging of the sizing composition, that comprises the sizing agent, to a stock for the paper or paperboard. The invention also relates to a method for the manufacturing of sized paper, cardboard or paperboard by use of the sizing cmposition, and the paper or paperboard manufactured accordingly. |
