Absorption and rheological phenomena during foam application on textiles.

Abstract

A simple rheological model has been used to describe foam flow through moving textile assemblies. The validity of this model was tested, and the nature and the relative magnitude of deviations from the model evaluated for several different substrates. Neglecting foam degeneration during transport, the model was found to represent a valuable means of evaluating some rheological and geometrical deviations. The model can be used in a semi‐quantitative way to describe absorbency during foam application. Liquid absorption experiments done off‐line, absorption during foam application and some earlier results could be described using different theoretical approaches. Some rheological anomalies have been discussed.