Patent ID: 6022447
Filing Date: 2000-02-08
Classification: D21H,Y10T

Abstract:
A process for treating a fibrous material comprising:providing a liquid suspension comprising fibrous material;intermixing the liquid suspension of fibrous material with a reactive treatment is selected from reactive dyes, vat dyes and sulfur dyes over a time period T.sub.1, the treatment requiring a period of time T.sub.R sufficient to treat the fibrous material;depositing the liquid suspension of fibrous material containing the 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 lets of a liquid to the layer of fibrous material to wash unused reactive treatment from the fibrous material within a period of time T.sub.3 ;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.