The Mechanism of Resin Deposition in Cotton

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Abstract
A theoretical discussion of the mechanism leading to resin deposition inside cotton fibers is given, and the hypothesis presented is substantiated by experimental results. It is demonstrated that expression of excess precondensate from fabrics in the padding process does not play a decisive role. A simple immersion process without squeezing, or spraying with the precondensate, is sufficient to obtain the desired crease resistance and swelling reduction. Roll pressure affects the results of the treatment only insofar as it determines the amount of add-on and the uniformity of the finishing effect. Resin applied by immersion or by spraying is also deposited inside fibers. and therefore the result is nearly the same as that obtained by padding. Resin deposition and location inside cotton fibers, achieved by the various application methods, is demonstrated by means of an especially developed staining test.

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