A Comparative Study on Quality of Acrysorb and Cotton Terrysock Fabrics Produced from Ring, Rotor and DREF-3 Yarns.

Researchers compared the properties of ring spun, rotor spun, and DREF-3 yarns manufactured from superabsorbent acrylic and cotton fibers and knit into terry fabrics. The acrylic fabrics had superior appearance and hand and showed higher water absorption, water retention, drying capability, and air permeability than did the cotton fabric...

Future Developments in Weaving and Nonwovens.

An overview of woven and nonwoven fabric manufacture addresses potential developments in sizing processes, multished looms, loom automation, weft insertion, shedding mechanisms, raw materials selection, needle punching, spunbonding, and stitchbonding. New developments will focus on improving bobbin unwinding in the creel, cold sizing, aft..

Influence of Core-Sheath Ratio and Core Type on DREF-III Friction-Spun Core Yarns.

Researchers evaluated DREF-3 friction spun yarns with fibrous sheaths of viscose rayon fibers wrapped around three different polyester cores in varying core to sheath ratios. Increasing the proportion of core fibers up to 70 percent increased yarn tenacity, breaking extension, and abrasion resistance. Increasing the percentage of sheath f..

Retained Strength of Air-Spliced Yarn -- Rupture Process and Effect of Test Length.

Researchers studied the tensile failure process of air spliced carded cotton, combed cotton, polyester/cotton blend, cotton/acrylic blend, and acrylic hosiery yarns. Approximately 80 percent of yarn breaks occurred in the splicing zone. The stick slip rupture occurred in the splicing zone for cotton, acrylic, and polyester/cotton blend ya..

Quality Aspects of Viscose Jet-Spun Plied Yarns.

Studies of the influence of ply twist and twist direction on the properties of viscose jet spun yarns showed that plying improved yarn tenacity, breaking extension, and evenness. S twist yarns showed the greatest increase in tenacity. Feed ratios, second jet pressure, and ply twist level and direction determined the level of improvement i..

Goldner: Compact Spinning for Reduced Costs and Raised Quality.

C.B. Goldner GmbH manufactures medium staple yarns via compact spinning. CBG Com-Pact yarn is less hairy than other yarns, with almost no long hairiness above 3 millimeters. It features parallel fiber orientation, a slight spiral, and an almost circular cross section. These properties increase yarn strength and elongation compared with co..

Air-Jet Spun Yarns; Structure -Properties Relationship.

An investigation into the relationships between the structural parameters and physical properties of air jet spun polyester yarns indicated that conventional testing machines are inappropriate due to the presence of wrappers and fibers parallel to the yarn axis. The incidence of wrappers per unit length of yarn, average length of each wra..

The Pilling Effect of Flat Knitwear -- The Importance of Yarn Content and Wear Density.

Researchers used 13 yarns of different wool/polyester and wool/acrylic blends to test the pilling tendency of knit fabrics. Yarns with the greatest density of polyester showed the lowest pilling tendency. A small decrease in density increased pilling. Further density decreases, however, did not result in further increases in pilling tende..

The Mechanical Behavior of Cotton and Cotton/Polyester Yarns Subjected to Enzyme Treatment.

Experiments evaluated the changes in low stress mechanical behavior of cotton and cotton/polyester yarns treated with enzymes. Different spinning systems manufactured yarns with different structures. Enzyme treatment conditions were identical for all samples. The treated yarns had a wide range of weight losses, which suggested that such s..

Yarn Quality Benchmarks for Cotton Murata Vortex Yarns.

The United States market for the Murata Vortex Spinner (MVS), introduced at OTEMAS 1997, is strong. Several companies have full production plants with MVSs or a sample machine, whereas other companies are considering their purchase. Experiments at Murata and the Institute of Textile Technology generated the first yarn quality indexes for ..