| 摘要 |
The present invention relates to a method and an apparatus for dyeing cotton at fiber stage and a method for preparing yarn. The present invention provides an apparatus ( 100 ) for dyeing fibers and filaments comprising plurality of pre-wetting troughs ( 18 ), plurality of dye baths ( 20 ), and a drying arrangement ( 22 ) characterized in having a supporting system ( 14 ) for carrying and dyeing the fiber ( 12 ) continuously and homogeneously. The fibers or filamnents for dyeing includes cotton and other natural fibers, man made and synthetic fibers as well as filamnents and a combination thereof. The fiber for dyeing according to the present invention is cotton fiber. A method for dyeing according to the present invention comprising the steps of carrying the cotton fiber ( 12 ) along with supporting system ( 14 ); prewetting the cotton fiber ( 12 ) along with supporting system ( 14 ); dyeing of cotton fiber ( 12 ) along with the supporting system ( 14 ); and drying of the cotton fiber ( 12 ) wherein the cotton fiber ( 12 ) is dyed continuously and homogeneously. The dye used for dyeing is the indigo dye.
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