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US 5,707,858 AGranted
Process for the treatment of cellulosic fabrics with cellulases
AssigneeNovo Nordisk A/S
InventorsGarrett A. Screws, Gitte Pedersen
Life of this patent
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Abstract
This invention relates to an improved cellulase treatment of cellulosic fabrics to improve fabric quality with respect to handle and appearance without loss of fabric wettability. Cellulosic fabrics are subjected to two treatments with cellulase. The resulting fabric has a soft and smooth feel and reduced pilling.
Claims29
A process for manufacturing a cellulosic fabric comprising preparing, dyeing and finishing the cellulosic fabric, wherein said process further comprises the following sequential steps during the preparing, dyeing or finishing of the cellulosic fabric:
- (a) a first treatment of the cellulosic fabric with an amount of a first cellulase to achieve a weight loss between about 0.05 and about 10.0% of the weight of the fabric;
- (b) inactivation of the first cellulase;
- and
- (c) a second treatment of the cellulosic fabric with an amount of a second cellulase to achieve a weight loss between about 0.05 and about 10.0% of the weight of the fabric after step (a),
- wherein the combined weight loss obtained by the first and second treatments is greater than the weight loss obtained by a single treatment of the cellulosic fabric with the amounts of the first and second cellulase used in the first and second treatments, respectively.
2 more elements
Dependencies are inferred from the claim text.