Studies on the Dyeing Behaviour of Amines Pretreated Wool with Reactive Dyes.

Research studied the use of armines as wool pretreatments to improve dye uptake during reactive dyeing. Tests treated wool fibers with diethanolamine and triethanolamine, dyed the samples with Remazol Brown GR and Remazol Brilliant Orange BR reactive dyes, and spectrophotometerically determined the amount of dye absorbed by the wool fiber..

Structure of Nascent Microbial Cellulose III. Different Influence of Direct Red 75 and 79 on Nascent Microbial Cellulose.

Researchers investigated the influence of Direct Red 75 and 79 having the same ureylenebis(naphthylazo)benzene skeletal structure on the nascent structure of microbial cellulose. Each product obtained from Acetobacter culture in the presence of Direct Red 75 or Direct Red 79 was a crystalling complex in which the monolayer of a dye occurr..

Lyocell and Wool: Dyeing Response of a New Fiber Mixture.

Lyocell is a new cellulosic fiber spun from a mixture of the organic solvent N-methylmorpholine oxide (NMMO) and water. Lyocell is known as a green fiber because it is biodegradable and NMMO is a benign solvent. Although Akzo owns the patent rights to NMMO spun lyocell fiber, a number of other manufacturers produce other versions. The dye..

Lyocell + Wool. Dyeing Behaviour of a New Fibre Blend.

Researchers used exhaust dyeing in a two stage process with monofunctional and bifunctional dyes to produce tone-on-tone effects with adequate wet rubfastness values on wool/lyocell fibers. Reducing the pH value from 10 to 8.5 reduced the wool damage that occurs in an alkaline medium. Gradually adding the amount of alkali needed to bind t..

Experiences in Dyeing of Fibre Blends of Lyocell and Wool.

Experiment in dyeing wool and lyocell blends used direct dyes for short times at low temperatures of 60 and 80 degrees centigrade. The dyeings had high levelness, deep shades, and satisfactory wetfastness properties. Dyeing for greater than 30 minutes at temperatures of greater than 80 degrees centigrade, however, were requisite for compl..

Dye Absorption Behaviour of Sisal Fibres with Basic Dyes.

To estimate dye absorption behavior, researchers dyed sisal fibers with Methylene Blue and Malachite Green. Diagrams detail the structure of these basic dyes. Permeability and the presence of reactive functional groups determined the dyeability of the fibers. Sisal fibers can be dyed with basic dyes at temperatures ranging from 30 degrees..

Machinery Advances to Improve Competitiveness.

Cooperation among textile mills, machinery designers, and chemical suppliers fostered advances in finishing equipment and technology. Early washing machines used the rope design and large amounts of water. Modern, efficient open width and rope washing machines use less water to process first quality short yardage rapidly. Modern continuou..

Finishing and Dyeing Technical Yarn and Fabrics

The Steverlynck Group is one of Europe's leading textile commission finishing and fabric and yarn dyeing companies. Its four main divisions are package dyeing, beam dyeing, hank dyeing, and piece dyeing and carpet/upholstery fabric finishing. The company

Practical Aspects of Finishing Elastic Textiles.

A review of dyeing and finishing elastic fabrics focuses on critical operational parameters, which are notable for their diversity and number and depend on fabric type. The range of elastic fabrics include woven, warp knit, raschel knit, and circular knit fabrics manufactured from bare, wrapped, core spun, or twisted yarns with an elastan..

Optimization of Open Width Dyeing and Finishing by Use of a Spreadsheet.

Improvements in the automation of open width dyeing and finishing involve the use of integrated information systems and experts who specialize in programming these systems. A major trend in open width dyeing and finishing has been the simplification of processes, frequently eliminating one or more stages. Despite this trend, a system to d..