Wool-polyester fiber blends, dyeing

Wool—Polyester Fibers. The 45/55 wool—polyester blend is the most common fiber combination in the worsted industry. Strength and exceUent dimensional stabiHty of the polyester fiber enable the creation of lightweight wear fabrics not obtainable before. Economy has modified the fiber ratio and 30/70 and 20/80 wool—polyester blends are as common as the classical 45/55 blend. Disperse dyes for polyester and acid or neutral premetaUized dyes for wool are employed in a one-bath process. Should cationic dyes be used for the wool portion, a one-bath procedure can only be employed for light to medium shades, whereas dark shades require a one-bath two-step process. Wool blends should not be dyed above 105°C in order to avoid deterioration of the fiber quaHty. 

Wool-Polyester Fibers. The wool-polyester blend is the most common liber combination in the worsted industry Disperse dyes for polyester and acid or neutral premetallized dyes for wool are employed in a one-hulh process. 

EGANAL PSA Cone, is used during the dyeing of polyester fibers and its blends with cellulosics and wool under HT dyeing conditions. 

REMOL ASN liquid has an excellent dispersing and compatibil-izing action in one-bath dyeing of wool or polyamide blends with acrylic fibers using anionic and cationic dyes and in dyeing polyester/acrylic fibers with disperse and cationic dyes. 

Fibers used in the manufacture of apparel are predominantly cotton, wool, polyester, acrylic, and rayon. The fibers are used in both woven and knitted form with the exception of acrylic fibers, which are principally used for knitwear. Fiber blends are a feature of many items of apparel wear (e.g., polyester-rayon for corporate and evening wear, polyester-cotton for shirts, and polyester-wool for suits). Technologies for dyeing the two-fiber blends are well established. However, there can be some issues with effluent. 

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