Drainage and wet stretch improvement in mechanical pulps

Details Drainage and wet stretch improvement in mechanical pulps Drainage and wet stretch improvement in mechanical pulps

D - Textiles, Paper

21

C

9/13

D21C 3/02 (2006.01) D21C 9/00 (2006.01)

Patent

CA 1071805

DRAINAGE AND WET STRETCH IMPROVEMENT IN MECHANICAL PULPS ABSTRACT OF THE DISCLOSURE The drainage and wet stretch properties of mechanical pulp are improved by cooking the mechanical pulp under controlled conditions so as to permit greater use of mechanical pulp in newsprint. The pulp is cooked in sodium sulphite solution at elevated temperature for a time sufficient to cause reaction with the pulp but insufficient to cause substantial dissolution of lignin from the pulp. - 1 -

289427

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