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A study on physical and mechanical properties of copper core yarn, stainless core yarn, glass core yarn, and copper ply yarn woven fabric composite materials through ANOVA has been reported. Copper, stainless steel, and glass filaments are selected as the core, and cotton is selected as the sheath. The various combinations of copper, stainless, and glass core yarns are produced by DREF II Friction spinning machine, and core yarns are converted into woven fabric composite materials by loom. The physical and mechanical properties of copper core yarn, stainless core yarn, glass core yarn, and copper ply yarn woven fabric composite materials have been measured using various instruments. It is observed that there is strong and significant difference between the tensile strength of warp direction and weft direction of core yarn woven fabric composite materials. The flexural rigidity and bending modulus of core yarn fabric increases with an increase in core content of copper, stainless steel, and glass filament.

Sliver nanocolloids have been synthesized by chemical reduction of sliver salt solution, characterized by SEM usage of nanoparticles. Sliver nanocolloids are treated with wool fibres and dyed wool fibres (direct and acid dyes). The physical properties, colour strength, and fastness properties have been studied for dyed wool fibres and ordinary wool fibres. It is observed that the fibres with nanotreated fibres have better strength than untreated wool fibres. It is also observed that there is considerable improvement in colour strength and colour fastness of silver nanocolloids-treated wool fibres (dyed).

In this research work, copper core yarns with cotton/polyester sheaths were produced by friction spinning machines and their woven fabrics were made by looms with varying fabric structures for electromagnetic (EM) shielding purposes. The effect of varying structures, varying materials, varying numbers of layers, core sheath ratio, and lay-up angle on EM shielding effectiveness were studied. The shielding effectiveness of copper core yarn fabrics was measured by using a Network Analyzer -EM shielding test (ASTM D4935-99) in the frequency range from 2018,000 MHz.

In this investigation the complex copper core spun yarn (Cotton Sheath and Polyester Sheath) of 179, 118, 98, and 84 tex count of copper core yarns were produced by Dref friction spinning machines and the count of 74 and 59 tex of copper core yarns (cotton sheath and polyester sheath) were produced by ring spinning machines with core attachments device for electromagnetic shielding yarn production purpose. The article reports the effects of the process variables on tensile properties of the copper core yarn as well as individual core and sheath components. Various parameters such as Spinning drum speed, the sliver material, core materials, and count of the yarn were changed to investigate how various parameters affects the tenacity of the complex copper core spun yarn.