Method for the dyeing of yarn from a supercritical fluid
AssigneeAmann & Sohne GmbH & Co.
InventorsRudolf Eggers, Joachim von Schnitzler, Kurt Truckenmuller
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Abstract
A method for the dyeing of a textile substrate, particularly for the dyeing of a polyester yarn wound upon a bobbin, is described, in which the textile substrate to be dyed is arranged within an autoclave and superfused, respectively perfused, with a supercritical fluid containing at least one dye, whereby an auxiliary fluid is loaded with the at least one dye, whereby the auxiliary fluid in brought into contact with the supercritical fluid and whereby hereafter the textile substrate is perfused, respectively superfused, with the supercritical fluid containing the at least one dye.
Claims37
A method for the dyeing of a textile substrate, comprising:
- arranging the textile substrate within an autoclave;
- loading an auxiliary fluid with at least one dye;
- mixing said auxiliary fluid loaded with said at least one dye with a supercritical fluid in a two-component nozzle to form an auxiliary fluid/supercritical fluid mixture and effect at least partial transfer of said at least one dye to said supercritical fluid;
- introducing said auxiliary fluid/supercritical fluid mixture exiting said two-component nozzle into said autoclave;
- and
- exposing said textile substrate to said auxiliary fluid/supercritical fluid mixture to effect dyeing of said textile substrate.
The method according to plain 32, wherein said empty tube flowing speed is between about 10 mm/s and about 60 mm/s.
Dependencies are inferred from the claim text.