Treatment of textile material
AssigneeActicell GmbH
InventorsChristian Bruno Schimper, Paul Pachschwöll, Hubert Hettegger
Life of this patent
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Abstract
The present invention generally relates to a method for changing the color of a textile material to obtain a vintage and/or worn appearance comprising the steps of contacting the fabric textile material with a nitrate salt, activating the nitrate salt by the addition of an acid catalyst until the desired color change is achieved.
Claims20
A method for changing the color of a dyed textile material to obtain a vintage and/or worn appearance, comprising the steps of:
- a. contacting the textile material with at least one nitrate salt,
- b. activating the nitrate salt by the addition of an acid catalyst, and
- c. maintaining step b) until the desired color change is achieved.
A method for increasing the color of a dyed textile material comprising the steps of:
- a. pretreating the textile material with at least one nitrate salt and optionally a catalyst,
- b. drying the pretreated fabric,
- c. applying a laser beam to the textile material to generate NOx compounds which attack the dye, and thereby
- d. creating a color value change.
The method according to claim 20, wherein a ΔL value between the textile material before step (a) and after step (c) is greater than 2, wherein L refers to lightness as defined by CIE 1976 Lab color space, and wherein the Lab color space lightness value (L) of the fabric after step (c) is preferably from 20 to 60.
Dependencies are inferred from the claim text.