This paper describes significantly iniproved finishes for control of felting shrinkage in wool apparel fabrics obtained with blends of glycerol-based and bisphenol A-based epoxy resins with an amino polyamide resin. Oxidative pretreatrnent of the fabric improves the shrinkage-resistance. Much of the stiffness imparted to the fabric by the resin treatment is removed by mechanical methods. Successful application of a typical resin formulation to full-size woollen fabrics is described.

The development of a single-bath, exhaust treatment for shrink-resisting wool is described. The process involves dispersing a solvent solution containing a fully-reactive cycloaliphatic diisocyanate monomer and cationic emulsifying agent into water, exhausting the monomer on fabric at low temperature, and then adding a polyamine to form, in situ, a wash-fast polyurea finish on the fiber surfaces. Following polymerization, the fabric is scoured, rinsed, neutralized, and tumble-dried. In its present state of development, the process seems most suitable for treating knitwear; however, it also exhibits a potential for dyebeck application to woven fabrics. Effective shrinkage control is obtained on both clear-worsted and wash-finished knit constructions with tightness factor ranging from 9.0 to 17.3.

The processing of cotton/wool blends on the cotton system to produce yarns for fabrics for flight- crews' uniforms was investigated. Fibers (a combed Acala 1517-V cotton, a stretch-broken 64s wool, and a cut 64s wool) were blended in various percentages during drawing. The 39-mg/m (Neo = 15/1) yarns with different twists were spun on both the ring and open-end spinning systems to form warp and filling yarns. These yarns were made into 2/2 right-hand twill fabrics. Optimum processing variables for roving and ring-spinning processes are given. Yarn and fabric data from the ring and open-end spun lots are compared with corresponding worsted lots. In general, ring-spun yarns ranked first, open-end-spun yarns second, and worsted yarns third in pertinent yarn properties. In gray fabrics, ring yarn ranked first, worsted second, and open-end third. High-quality products of cotton/ wool blends can be produced on the cotton system.

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