Abstract:
Fibrous articles are uniformly treated under low compression by charging them into a treating chamber defined between horizontal upper and lower partitions in a stratiform with a normal thickness satisfying the following relationship: L1 > OR = 0.9L2 wherein L1 is the thickness of the treating chamber and L2 is the normal thickness of the stratum of the fibrous articles in the treating liquid, and by flowing the treating liquid through the stratum of the fibrous articles along the thickness thereof in alternate directions.