METHOD FOR BLEACHING FIBROUS MATERIAL MADE FROM ATYPICAL RAW MATERIAL

摘要

In a method for bleaching fibre material comprising regenerated cellulose fibre made of atypical cellulose-containing raw material, fibres are treated with a bleaching solution containing a peracid. The atypical cellulose raw material is a raw material having a high hemicellulose content and/or containing other impurities, and having a low brightness level, from which viscose is manufactured, which is bleached by a solution that contains a peracid, to achieve a high brightness level.