Reactive dyeing equipment for cellulose fibre-contained yarns

Abstract

The invention relates to reactive dyeing equipment for cellulose fibre-contained yarns, comprising a baking device. The baking device comprises a drying drum support, a plurality of rotatable drying drums arranged on the drying drum support, a lead-in yarn guide roller and a lead-out yarn guide roller, wherein each drying drum comprises a drying drum outer wall, a drying drum inner wall and a drying drum side wall; the drying drum outer wall, a closed cavity is encircled by the drying drum inner wall and the drying drum side wall; heat conduction oil is filled in the cavity; an electric heating element used for heating the heat conduction oil is also arranged in the cavity; the drying drums, the lead-in yarn guide roller and the lead-out yarn guide roller synchronously rotate; and when in work, yarns led in by the lead-in yarn guide roller are led out by the lead-out yarn guide roller after bypassing the surface of each drying drum in sequence. Through utilizing the equipment, continuous pad dyeing can be carried out on the cellulose fibre-contained yarns by using reactive dyes, and moreover, in the dyeing process, the baking temperature is relatively low, the baking mode is simple, broken yarns are less and operators are easy to dispose, and therefore, the reactive dyeing equipment is especially suitable for the special requirements on the continuous pad dyeing of the yarn.

Description

technical field [0001] The invention relates to the field of textile printing and dyeing, in particular to equipment used in the dyeing and finishing treatment of dyed yarn used in fabrics such as knitting, yarn-dyed weaving and denim. Background technique [0002] The dyeing of colored yarns containing cellulose fiber components used in knitted, yarn-dyed, denim and other fabrics, such as the dyeing of colored yarns containing cotton and viscose, usually uses hank dyeing, cheese dyeing, beam dyeing, pulping Combined dyeing machine dyeing and other dyeing techniques. Because these dyeing techniques have obvious shortcomings such as large water consumption, high energy consumption, and heavy sewage discharge, the continuous pad dyeing technology of cellulose fiber-containing yarn with low water consumption and high production efficiency has been focused on research in the printing and dyeing industry. [0003] The invention patent "A Production Method of Paint Dyeing Colored...

AI Technical Summary

Problems solved by technology

In the application of this technology, the coating cannot effectively penetrate into the yarn fiber, resulting in obvious technical and quality problems: First, the color fastness is poor, especially the rubbing fastness, which can only be produced for garment polishing and washing Second, the dyeing core penetration is poor; third, the dyeing rate is low, it is difficult to dye dark colors, the quality is unstable, and the adhesive roll is seriously stained

Reactive dyes currently mainly use exhaust dyeing methods that are completely different from continuous pad dyeing in yarn dyeing, such as skein dyeing, cheese dyeing, warp beam dyeing, etc., while reactive dyes on fabrics are mainly dyed by continuous pad dyeing. However, the continuous pad dyeing method of reactive dyes for fabric dyeing mainly includes two processes, one is the baking and fixing method, which is mainly suitable for dyeing light colors with K-type dyes, and is not suitable for other types of reactive dyes. The dark color is produced, and the baking temperature is required to be above 170°C, which severely limits the application of this color-fixing method in the continuous pad dyeing of cellulose fiber-containing yarn; After padding the dyeing solution, then immerse in the fixing solution and steam to fix the color. This method itself has problems such as more hydrolysis of the dye and high chroma of the wastewater. If it is used for yarn fixing, special yarn steaming is required. box, and there are problems such as yarn breakage in the steaming box that is difficult to deal with

Therefore, active dyes are applied to the continuous pad dyeing of cellulose-containing fiber yarns, and there is still a lack of effective process methods and supporting equipment.

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