FRICTION OF SPUN YARN WRAPT AROUND CYLINDER

Production of Core Spun Yarn with Ring & Siro Spinning System

A common problem in production of core–spun yarns on the Ring spinning frame is the slippage of the staple fibers as sheath fibers relative to the core. This effect is known as ‘strip-back’ or barberpole. This problem may lead to an incomplete core coverage and results in end–breaks in subsequent processing. In order to avoid this problem, in the present work, core spun yarns (acrylic sheath fi...

Investigating the RoCos Core Spun Compact Yarn Properties

Impact of Carding Parameters and Draw Frame Doubling on the Properties of Ring Spun Yarn

The impact of card cylinder speed, card production rate and draw frame doubling on cotton yarn quality parameters was investigated by using the BoxBehnken experimental design. It was found that yarn tenacity, elongation and hairiness increase by increasing the number of draw frame doubling up to a certain level and then decrease by further increase in doubling. Yarn unevenness increased by incr...

Modeling friction for yarn/fabric simulation Application to bending hysteresis

This paper describes studies done at Gemtex Laboratory on the modeling and simulation of woven fabric. The main difficulty in this area is to take into account the hysteresis phenomena that occurs in fabric’s traction, shearing and bending behavior. Part I of this paper presents a friction based approach to obtain a time-free model for this nonlinear phenomena. Part II presents the application ...

Modeling the Properties of Core-Compact Spun Yarn Using Artificial Neural Network