NOPR Collection:

Performance of Rabbit Hair-Wool Blended Knitwears

1984-03-01T00:00:00Z

Title: Performance of Rabbit Hair-Wool Blended Knitwears Authors: Arora, R K; Gupta, N P; Patni, P C; Singh, U S Abstract: The characteristics of jersey fabrics knitted from rabbit hair-wool blends and all-wool have been studied. It is observed that rabbit hair-wool blend (25: 75) fabrics have better bulk, softness, whiteness, warmth stretch and recovery in comparison to all-wool fabrics. Page(s): 30-31

Prediction of Viscosity for Blends of Nylop-6 with Different Molecular Weight Components

1984-03-01T00:00:00Z

Title: Prediction of Viscosity for Blends of Nylop-6 with Different Molecular Weight Components Authors: Deopura, B L; Mishra, S P Abstract: Of the various blending rules used for predicting the viscosity of polymer blends of different molecular weights, Hashin's lower bound rule has been found to predict viscosity closely matching with the experimental data in the case of blends of Nylon-6 samples of molecular weights 29,000 and 55,000. Page(s): 28-29

Setting Limits for Corkscrew Weave Structure

1984-03-01T00:00:00Z

Title: Setting Limits for Corkscrew Weave Structure Authors: Sharma, I C; Sharma, Sukesh; Kumar, Harish Abstract: A method of arriving at the square setting of woven fabrics is reported. An attempt has been made to relate cloth setting limits with the rate of production (the rate of production decreases as weft density in the fabric increases) as controlled in the case of negative let-off motion during weaving. Taking the existing cloth setting theory to be applicable in mill practice, a criterion for comparing setts is evolved and a possible practical relationship for obtaining the maximum practical loom sett in the case of corkscrew woven fabrics is deduced. Samples have been woven using 72^S, 80^S and 88^S reeds, in each case running a series of different weft setts, reaching up to the maximum possible sett. Three weft cotton counts, 2/20^S, 2/40^S and 2/60^S, with 2/40^S warp count (polyester-viscose blend for each, 48:52) were used. Weft corkscrews (2/2,4/4,3/4,4/5 and 5/6) and warp corkscrews (4/3, 5/4 and 6/5) were woven. In each case, the cloth fell distance was measured on the loom during weaving. In all the cases, limits for maximum setts have been determined and the values compared with those obtained by Law [Wool Rec Text Wid, 21 (1922) 968] and Brierley [Text Mfr, 57 (1931) 3; 50(1932) 178,342; 78(1952) 349, 431, 437, 449,595; 79(1953) 71, 189, 283]. Page(s): 19-27

Dimensional Stability of Plain Weft Knitted Fabrics

1984-03-01T00:00:00Z

Title: Dimensional Stability of Plain Weft Knitted Fabrics Authors: Sharma, I C; Nagpal, R; Sood, S Abstract: The dimensional stability of plain weft knitted fabrics made from 2/30^S and 2/40^S grasi crimp and acrylic yarns has been investigated under three different conditions of relaxation, viz. dry relaxation, wet relaxation and tumble drying. It is found that in dry- and wet-relaxed states, the structure depends on the stitch length and yarn diameter. The plain weft knitted structure has been found to be a rationally determinate structure in the fully relaxed state, as in any other state the nature of the knitted loop is dependent on the physical properties of yarn, mechanical processing and knitting variables. The values of K_C, K_W, K, and K_l (constants of proportionality for courses/in, wales/in, stitch density and stitch length respectively) have been found to be constant, predictable and independent of yarn or machine variables in fully relaxed state. In any other fabric state, these values may vary considerably and have little commercial value. Fabric thickness has been found to be independent of loop length, but dependent on yarn diameter in fully relaxed state. Page(s): 13-18