Investigation of Effective Parameters on Physical and Mechanical Properties of Intermingle Filament-Spun Yarns
Desirable properties like efficient cover factor, heat resistance, suitable moisture absorption and handle have made the natural staple fibers the most applicable fibers in the textile industry especially in clothing products. However, apart from limited resources they have revealed some undesirable properties such as high hairiness, low abrasion resistance and tensile strength. To overcome these limitations mingling and blending of these fibers with synthetic fibers in both staple and filament form have been mostly considered. In order to achieve this goal, several new technologies have been developed including intermingling. This method gives the yarns enough strength by joining continues filaments to each other. This system has some advantages, e. g., high speed production and no environmental pollution in comparison to sizing etc. In this study, using intermingling jet, the effect of the most important parameters, including air-jet pressure, yarn take-up speed and spun yarn twist factor, on the physical and mechanical properties of final intermingled yarn were investigated. The results showed a direct linear regression between the air-jet pressure and stress and strain at breaking point. An inverse linear regression was also observed between the air-jet pressure and the work of rupture and modulus. The yarn take-up speed showed a direct linear regression with stress and work of rupture and an inverse linear regression with breaking strain, modulus. Spun yarn twist factor has a direct effect on stress and work of rupture but inverse effect on breaking strain and modulus. Duration of abrasion to rapture in intermingled yarns is more than sized, single and twoply yarns with the same wittiness.