Bleaching of a paper web with peroxide

Details Bleaching of a paper web with peroxide Bleaching of a paper web with peroxide

D - Textiles, Paper

21

H

D21H 21/32 (2006.01)

Patent

CA 2134072

2134072 9322501 PCTABS00027 The invention relates to a method for bleaching a paper web with peroxide and to a paper surface treatment mixture intended for such a method. According to the invention, peroxide is introduced onto a moving paper web as part of the said mixture, which in addition to the peroxide contains another active component, such as a bonding agent or a surface coating, to be introduced onto the web. The bonding agent may be made up of starch and a surface coating pigment, such as calcium carbonate, kaolin or talc. Peroxide is added to these so that its amount on each side of the web to be bleached will be approx. 0.08-1.0 g/m2.

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