Response Surface Modeling of Physical and Mechanical Properties of Cotton Slub Yarns

Muhammad Bilal Qadir,Muhammad Asad,Zubair Khaliq,Amir Abbas,Amir Shahzad,Usman Ali,Tanveer Hussain,Zulfiqar Ali Malik

doi:10.1515/aut-2017-0025

Muhammad Bilal Qadir, Muhammad Asad + Show 6 more

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https://doi.org/10.1515/aut-2017-0025

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Abstract

Abstract The objective of this study was to model the physical and mechanical properties of 100% cotton slub yarns commonly used in denim and other casual wear. Statistical models were developed using central composite experimental design of the response surface methodology. Yarn’s linear density, slub thickness, slub length and pause length were used as the key input variables while yarn strength, elongation, coefficient of mass variation, imperfections and hairiness were used as response/output variables. It was concluded that yarn strength and elongation increased with increase in linear density and pause length, and decreased with increase in slub thickness and slub length. Yarn mass variation and total imperfections increased with increase in slub thickness and pause length, whereas yarn imperfections and hairiness decreased with increase in slub length. It was further concluded that due to statistically significant square and interaction effects of some of the input variables, only the quadratic model instead of the linear models can adequately represent the relationship between the input and the output variables. These statistical models will be of great importance for the industrial personnel to improve their productivity and reduce sampling.

Highlights

Fancy yarns comprise a class of specialty textile yarns with intentionally induced irregular physical characteristics such as diameter, bulk, color, and so on
Slub yarn is a type of fancy yarn in which slubs are produced by systematically changing yarn’s linear density during the spinning process
[4] It has been reported that the twist distribution in every section of slub yarn is inversely proportional to the square of linear density of the corresponding section

Summary

Introduction

Fancy yarns comprise a class of specialty textile yarns with intentionally induced irregular physical characteristics such as diameter, bulk, color, and so on. The literature review does not reveal any model that characterizes the effect of key slub parameters on the resulting yarn characteristics. This paper endeavors to fill this gap and attempts to model some of the key physical and mechanical properties of the 100% cotton slub yarn. The range of linear densities covered in this study corresponds to the slub yarns commonly used for making denim fabrics. The design of experiment is based on the response surface methodology (RSM) and the central composite design (CCD) has been http://www.autexrj.com employed to cover the linear effects and the quadratic effects of key slub parameters on the resulting physical and mechanical properties of the yarn

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