Patent ID: 6340408
Filing Date: 2002-01-22
Classification: A61L,D21C

Abstract:
A method of preparing fluffed pulp for the manufacture of absorbent material which is to be used as a component in absorbent products, comprising the steps of:adjusting the pH of a stock, which consists essentially of bleached chemical pulp consisting of cellulosic fibres in aqueous suspension, to 4adding at least one water-soluble, non-polymeric aluminium salt to the stock, said salt in aqueous solution at said pH forming at least one hydrocomplex with aluminium of the type Al(OH)nx, where n is a number between 1 and 3, and x is 0, + or 2+; causing said slat in aqueous solution to act on the cellulosic fibres in said suspension at said pH during a period of time of at least 2 min; and forming the fibre pulp thereafter into a web, which is dewatered and dried, in which fibre pulp the fibres are separated through defibration in dry state of the pulp, by a supply of defibration energy not exceeding 130 kg/kg dry substance, giving a network strength of at least 7 N/g to form a fluffed pulp.