Patent ID: 6190735
Filing Date: 2001-02-20
Classification: D21H,Y10T

Abstract:
A process for treating a fibrous material comprising:providing a liquid suspension comprising fibrous material;providing a chemically reactive treatment requiring a period of time T.sub.R sufficient to react with and treat the fibrous material;intermixing the liquid suspension of fibrous material with the treatment over a time period T.sub.1 ;depositing the liquid suspension of fibrous material and intermixed treatment onto a forming surface to form a layer and removing a substantial portion of the liquid, over a period of time T.sub.2 ; andapplying pressurized jets of a liquid to the layer of fibrous material to wash unused, unreacted treatment from the fibrous material within a period of time T.sub.3 and to hydraulically entangle the fibrous material to form a coherent web;wherein T.sub.1, T.sub.2 and T.sub.3 are immediately consecutive and amount to a period of time at least as great as T.sub.R.