Some Significant Advances in Yarn Splicing Technology
Journal Title: Latest Trends in Textile and Fashion Designing - Year 2018, Vol 1, Issue 2
Abstract
Yarn winding is the process of transferring yarn from bobbins to packages to facilitate in the subsequent processes of warping, weaving and knitting. In this process, both the yarn ends are joined together to provide the continuity of the yarn package and several yarn faults; neps, thin place, thick place are removed. Thus, more uniform yarn mass distribution and higher yarn evenness properties are obtained. The yarn ends are joined together by applying a blast of compressed air into a profiled device called a splicing chamber. The most important performance parameters of splicing are obtaining adequate strength and appearance at the splice point for all processing requirements. The diameter of spliced portion affects not only appearance of the splice joints but also physical characteristics such as packing density, strength, specific volume etc. Yarn diameter is an important property which affects the physical properties of the end products. Variations in yarn diameter cause undesirable effects such as imperfections in the knitted or woven fabric and difficulties in weaving preparation stages. The achievement of an appropriate splice in winding is one of the most important factors for spinners to meet present requirements in terms of productivity and quality. Different splicing techniques, pneumatic, mechanical and electrostatic, were developed towards the end of the last century [1]. Over the last twenty years, many studies have tried to broaden the end use of pneumatic splicing, in the upward transformation process [2-4]. The mechanical properties of spliced yarns which affects the quality of the denim yarn are influenced by variations in parameters such as raw materials and process & machine variables. Increasing some of these variable results can increase or decrease the performance of mechanical properties. Splicing is a technique which was especially developed to meet requirements in weaving where demands are severe. This is the manner of joining two ends after preparation by air under pressure [5,6]. The high-speed compressed air is used as the driving force of the air splice, after the process of yarn cutting, untwisting and twisting, to complete the yarn splicing, which is a typical application of fiber-media fluid dynamics in the textile industry [7]. Central Composite Design to Determine Strength of Wet Spliced Post Sized Denim Yarns The abrasion, tensile strength & elongation of the splices have been investigated [8,9]. It has been shown by linear regression and neural networks that the linear density ofyarn is the most influential parameter on these physical properties. The various zones which participate in traction by defining the total mechanism of splices have been considered [10-12]. It has been shown especially that splice remains a failing technique in weaving, and it is essential to optimise it in order to improve certain input parameters. The technique of image analysis of morphology of splices has been used to prove that splicing is not reliable compared to the parent yarn [13]. In general, it is important that mechanical properties of wet spliced yarn after sizing should have the highest values. For this reason, the levels of the variables that affect the performance of the splice should be selected so that maximum properties are achieved
Authors and Affiliations
N Gokarneshan, K Velumani, Marudhachalam Marudhachalam, Gokulaprabha Gokulaprabha
Keywords
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- EP ID EP607658
- DOI 10.32474/LTTFD.2018.01.000107
- Views 179
- Downloads 0
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