Molnlycke Ab

Other

Inger V Eriksson

Goran E Annergren

Paul Kenneth Cutts

Bo Gunnar Drehmer

Lars E Wagberg

Hans Olov Johansson

Matthew James Green

Cellulosic fines and cellulosic fibers are separated from a suspension containing the fines, the fibers and hydrophobic materials by screening the suspension to remove the fibers, and then subjecting the resultant filtrate to dispersed air flotation in the presence of calcium and generally a separation aid to form an upper Reject fraction in which the hydrophobic material is concentrated and a lower Accept fraction in which the cellulosic fines are concentrated.

Separation of solids from aqueous suspensions containing cellulosic fibers and fines

Aluminum salt impregnated organic pulp fibers for use in absorption articles are disclosed. The fibers have an aluminum content of 3-100 g/kg based on the weight of dry pulp. The pulp fibers are in the form of fluff and, when disposed in a layer, exhibit increased absorption rates and improved dispersion of liquid in horizontal and vertical directions. The fibers, in the form of an aqueous suspension, are impregnated with aluminum salt in aqueous solution at a pH of 5-11, preferably 8.5-9.5 and most preferably at a pH of 9. Impregnation may optionally be carried out in the presence of a silicate.

Aluminium-salt impregnated fibres, a method for their manufacture, fluff

Fibres of increased specific surface area, a method for their

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Sundsvall, Sweden

Inger V Eriksson