Method and apparatus for dyeing cellulosic textile substrates with a leuco-state dye

a cellulosic textile and inert technology, applied in the field of apparatus for dyeing cellulosic textile substrates with inert leucose dye, can solve the problems of inability to dye cellulosic textile materials with indigo dye, waste dye and water disposal, undesirable substantial expense and environmental problems, etc., to achieve the effect of reducing the entry ra
US20070266505A1Inactive Publication Date: 2007-11-22GASTON SYST INC
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
GASTON SYST INC
Publication Date
2007-11-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

An apparatus for dyeing a cellulosic textile substrate with reduced indigo dye in a leuco-state in an inert atmosphere substantially isolated from oxidizing substances. A plurality of applicator faces that each apply a portion of the total dye application. The first foam applicator is spaced from the entrance of the chamber to allow air entrapped in the interstices of the substrate to escape. The applicators are spaced from each other to allow collapse of the foam and dispersion of the dye applied in the previous applicator before the substrate reaches the next applicator. Similarly, the exit is spaced from the last applicator to allow the foam to collapse and the dye to disperse prior to exiting the apparatus and entering the atmosphere in which oxidization of the dye occurs.
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Description

[0001] This application is a continuation-in-part of pending U.S. patent application Ser. No. 10 / 833,450, filed Apr. 28, 2004.BACKGROUND OF THE INVENTION

[0002] The present invention relates to an apparatus for dyeing cellulosic textile substrates with an inert leuco-state dye. More particularly, the present invention relates to an apparatus for dyeing cellulosic textile substrates with a reduced leuco-state dye foamed with an inert gas and applied in the leuco foamed state in an inert atmosphere to the textile substrate and subsequently oxidized thereon to affix the indigo dye to the cellulosic textile substrate.

[0003] Dyeing cellulosic textile material, such as cotton yarn or fabric, with a leuco-state dye, such as indigo dye, has a large market, particularly for cotton denim clothing items, such as blue jeans. The fastness of the indigo dye on cotton and the deep color or shade that can be obtained make indigo dyed fabric a very popular product. However, dyeing cellulosic textil...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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