| 摘要 |
A method in connection with the manufacturing of paper or cardboard in one or more plies in order to achieve a paper or cardboard product with an even and high quality, whereby a fibre composition of a paper or cardboard waste, so-called broke (7), is determined (4), whereafter the said broke is fractionated (5, 6) and at least one fibre fraction (8, 9, 10) obtained thereby is conveyed to a given ply in the paper or cardboard, whereby the said fractioning (5, 6) is controlled so that the fibre composition in the fibre fraction (8, 9, 10) obtained is adapted to a fibre composition in the input paper pulp (1, 2, 3) for the said given ply.
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