Defect free yarn is a great demand for spinner, knitter, and weaver and also other textile personnel because numerous end products from knit apparels to woven fabrics, from towels to sheets and from carpets to industrial fabrics characteristics significantly depend on the physical properties of yarn. The qualities of rotor yarn are really directed by spinning parameters. The aim of this study is to observe the effect of spinning parameters such as rotor diameter and speed on thick, thin places and neps of yarn in rotor spinning process. 0.11 sliver hank of 100% cotton was used to produce 12 Ne yarn. 65% virgin cotton and 35% wastage cotton were mixed together. The positive impact of spinning parameters on yarn properties were accessed by thick places, thin places and neps. Results indicate that the yarn qualities were improved with increasing of rotor speed and rotor diameter. The rotor diameter was settled to 43 mm while rotor speed fluctuated from 35,000 to 45,000 rpm and rotor speed was fixed to 35,000 rpm while rotor diameter across contrasts from 43 mm to 66 mm.

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Fabric characteristics significantly depend on the physical properties of yarn and the qualities of rotor yarn greatly governed by processing parameters. The aim of this study is to observe the effect of processing parameters such as rotor diameter and speed on the physical properties of yarn in rotor spinning process. Mixing of spinning waste with the virgin cotton is a common phenomenon in rotor spinning. 0.11 sliver hank of 100% cotton fibre with 65% virgin cotton and 35% wastage was used to produce 12 Ne yarn. The favorable impact of processing parameters on the yarn characteristics were accessed by coefficient of variation (CVm %), imperfection index (IPI), hairiness, tenacity, count strength product (CSP) and force at break. The yarn qualities were improved with increasing of rotor speed and rotor diameter.

This study investigates the effect of different knit structure on various properties of rib knitted fabric. The acrylic yarns were used to make 1×1, 2×1, 2×2, 3×1 and 3×3 rib structured fabrics using manual V-bed knitting machine in this research work. The effects of knit structure were measured concerning drape co-efficient percentage, bending length, flexural rigidity and tightness factor. The results disclosed that the fabric properties are greatly influenced by knit structures. 1×1 rib knit fabric showed the lowest value for all tested properties and 3×3 rib knit fabric showed the highest value except drape co-efficient. The bending length and flexural rigidity was investigated in both wale and course direction. At the same time, surface and back sides bending length were also calculated. It has been identified from the test results that the effect of knit structure on flexural rigidity in both wale and course direction were influenced in a same chronological way.

In this experiment, three types of fabric such as jute, E-glass and carbon Kevlar were selected to manufacture composites taking polypropylene (PP) as matrix material. The objective of this study is to compare the examined properties such as tensile modulus (TM), elongation at break percentage (EB %), E-Modulus (EM) of jute, E-glass and carbon Kevlar fabric reinforced polypropylene composite. The properties of manufactured composite were evaluated experimentally using computerized UTM machine according to ASTM standards. Fourier transform infrared spectroscopy was used to identify the surface groups of the composites. Water absorption and fire retardant behavior of the composites were also performed. The results revealed that the tensile strength, E-Modulus and water absorption of carbon Kevlar composite were exhibited higher than the jute and E-glass fabric reinforced composites. Different scenario has observed for elongation percentage at break. The capacity of fire retardant was noticed higher in jute fabric composite than E-glass and carbon Kevlar.