Wyniki wyszukiwania - BazTech

1

Study of effect of spinning process variables on the packing density of ring, rotor and air-jet yarns using the Taguchi method

Kumar A., Ishtiaque S. M., Salhotra K. R.

Autex Research Journal

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2006

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Vol. 6, no. 3

122--135

EN

The effect of lap hank, card draft, draft/doublings and drafts at speed frame, ring frame, rotor and air-jet on packing density parameters were analysed using the Taguchi method. The trends of change in packing density with process variables are opposite to those of the yarn diameter and helix angle of the ring, rotor and air-jet yarns studied. The packing density is found to be the highest in air-jet yarn and the lowest in rotor yarn. An increase in draft in the air-jet and a decrease in the rotor spinner increases the packing density of the respective yarns.

2

End breakage in rotor spinning: effect of different variables on cotton yarn end breakage

Das A., Ishtiaque S. M

Autex Research Journal

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2004

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Vol. 4, no. 2

52--59

EN

The end breakage in rotor spinning not only reduces the running efficiency of the process, but also deteriorates the quality of the yarn in terms of presence of piecing slubs. A new system has been proposed to classify the end breaks in rotor spinning broadly into seven groups, depending on the configuration of broken ends. By examining the broken end, the probable causes of breakage can be predicted and necessary preventive action can be taken. The rate of end breakage and the proportion of different types of breakages vary with different process variables like yarn count, rotor speed, opening roller speed and residual trash content in draw frame sliver.

3

A quick, reliable, and economic method for evaluating the properties of rotor-spun yarn

Das D., Ishtiaque S. M., Mac T., Veit D., Gries T.

Autex Research Journal

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2004

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Vol. 4, no. 3

123--128

EN

An attempt has been made to evaluate the primary and secondary properties of blended rotor-spun yarn both quickly and reliably from only a small sample of fibre. The concept of the quickspin system of yarn production is partially utilised in this research work. The natural and synthetic fibres are blended in a 50/50 ratio according to five different methods on an Uster Micro Dust and Trash Analyser 3 (MDTA 3), and the best blending method is evaluated with the help of a suitable image analysis technique. Furthermore, the reliability of rotor-spun yarns produced from MDTA 3 slivers with conventionally produced rotor-spun yarns from card and draw-frame slivers has been checked in terms of their properties.