Device and process for indigo dyeing
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United States of America Patent
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Mar 22, 2011
Grant Date -
Jan 1, 2009
app pub date -
Jan 11, 2007
filing date -
Jan 13, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
Device (100) and dyeing process in continuous with indigo for warp yarn chains (3) and/or fabrics, equipped with a first hermetically sealed dyeing compartment (1), suitable for containing the dye bath, and a hermetically sealed fixing/dehydration compartment (2) of the yarn (3). The two dyeing (1) and fixing/dehydration (2) compartments comprise an inert environment and are functionally and hermetically connected with each other and there are means (4) for introducing nitrogen and/or deoxygenated air inside the same compartments; inside the compartment (2) there is at least one means (5) for directly heating and/or dehydrating the yarn (3).
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