A Study on the Effect of the Method of Tops Production used in Semi-Worsted Yarns for Carpet
Subject Areas : Fibers
1 - دانشگاه آزاد یزد
Keywords: Semi-Worsted, Carpet, Yarns,
Abstract :
The carpets at homes usually are under two types of forces, consisting of static and dynamic loads. This paper reports the results of a research work carried out on two types of carpets with different piles(yarns). Both pile yarns were 10.5/2 Nm(Acrylic) spun in semi-worsted using card and Tow to Tops machines. Due to higher orientation of the fibres in the second method of tops production in comparison with first method of tops production, initial modulus of the yarns produced from Tow to Tops machine is about twice this property of the yarns from card machine. However the breakage elongation of the yarns is vice verse, i.e. the elongation at breakage of the yarns produced from card are 1.86 times of the yarns spun from tops of Tow to Tops machine. As the fibres are more parallel in the second method, therefore the friction between the fibres is higher due to larger contact area between the fibres. After producing the carpets from two types of yarns, the tests of static load, dynamic load and pull-out yarn from carpet were carried out. The results show that the required force of pulling-out yarn from carpet produced from card yarns is higher in compared with other carpet. The reason for such behaviour of the carpet can be explained by locking the yarns due to their higher hairiness.
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