Apparatus for carrying out a process for the continuous dyeing of yarns with reactive dyes
AssigneesCiba-Geigy Corporation, Superba
InventorsRobert Enderlin, Mickael Mheidle, Didier Thibault
Life of this patent
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Abstract
The present invention relates to a process for the continuous dyeing of cellulose fibre yarns with reactive dyes and to an apparatus for carrying out this process. The process essentially comprises steps of impregnating yarn which has been continuously unwound at high speed from one or several supports (1) and rewound onto one or several supports (3) with at least one fibre-reactive dye in aqueous solution and at least one alkaline reagent in aqueous solution, and fixing the dye. The invention can be applied especially in the technical field of dyeing cellulose fibres.
Claims18
An apparatus for the continuous dyeing of yarns moving along a path having an axis of movement, said yarns being based on cellulose fibers, the apparatus comprising:
- an unwinding device for the continuous high-speed unwinding of yarn from one or several supports;
- an impregnation apparatus for impregnating unwound yarn(s) with one or several dyes which are employed individually or in a mixture in the form of one or more dyeing liquors;
- a first rewinding device for rewinding treated yarn(s) onto one or more other supports;
- a storage unit for fixing the dyes;
- an intermediate rack for unwinding the yarn(s) leaving the storage unit;
- a washing and draining unit;
- a drying apparatus;
- and
- a second rewinding device for rewinding the yarn(s) onto new supports.
Dependencies are inferred from the claim text.