Contribution of ringframe drafting condition to yarn count variability in fine counts

Abstract

<span style="font-size:11.0pt;line-height:115%; font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" calibri;mso-fareast-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;="" mso-bidi-font-family:"times="" new="" roman";mso-ansi-language:en-us;mso-fareast-language:="" en-us;mso-bidi-language:ar-sa"="">The results presented show that the old drafting systems at ringframe can be a source of yarn count variability in fine counts. Slippage of strand takes place under the drafting rollers under such conditions, leading to count variation. Frame-to-frame variation in count is encountered and individual frame-wise control in place of traditional group control is advantageous in keeping down the count variability between frames. C and D types of classimat faults and winding breaks also increase. Use of bigger diameter cots, incorporation of washer under the spring and renovation of top arm are shown as some interim measures helpful to bring down the count variability. The replacement of the old top arm by the second generation top arm helps ultimately in bringing the count variability well under control.</span>