Source: Tekstilna Industrija

 

Abstract


The paper presents changes of plain-weft knitted fabrics extensibility made of 100% Cotton yarns after finishing operations. For this purpose has been used multiple regression method with three independent variables. It was concluded that dyeing parameters have a decisive influence on plain-weft knitted fabrics extensibility and according to this textile materials destination may establish the optimal values of finishing process parameters leading from the design phase of knits to knitted textile surfaces with predetermined characteristics and appropriate knitted fabrics appearance according to destination.


Keywords: plain-weft knitted fabrics, finishing process, multiple regression method, extensibility


Introduction


Knitted fabrics represent a category of textile surfaces very high demand and valued by consumers because they present a number of advantages such as: easy maintenance, increased comfort in use, etc. The main disadvantage of these items is a low dimensional stability, especially after a series of wet treatments faced by technology to achieve only in humid. For these reasons finishing knits are made with well established technological parameters, with specific equipment and technologies leading to an acceptable dimensional stability [1].


Fabric extensibility represents the fabric capacity to reach the maximum value of elongation under forces below breaking point. During the handling, the fabrics elongate so it is important to understand this process, especially in case of weft knitted fabrics [2, 3].


The purpose of this work is to establish the influence of dyeing parameters on plain-weft knitted fabrics extensibility.


The experiments were performed using a multiple regression method [4, 5], taking as independent variables dyeing time process (minutes)-X1, dyeing temperature (C°)-X2 and pH dyeing bath noted with X3 and as dependent variables the knitted fabrics extensibility noted with Y.


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The authors are associated with Gheorghe Asachi Technical University, Faculty of Textile-Leather and Industrial Management, Iasi, Romania


Originally published in: Tekstilna Industrija, September - 2010