BASIC INFORMATION ABOUT WINDING MACHINE

WINDING SPEED: It depends upon the following factors
  • count
  • type of yarn, (type of fibre, average strength and minimum strength)
  • type and charactersitics of bobbin
  • package taper
  • final use of package
The best winding speed is the speed which allows the highest level of production possible for a given type of yarn and type of package, and with no damage whatsoever to the yarn.(abrasion and breaks due to excessive tension)
WINDING PRODUCTION: It depends upon the following factors
  • winding speed
  • time required by the machine to carry out one splicing operation
  • bobbin length  per bobbin( both bobbin weight and tpi to be considered, because TPI will affect the bobbin length). This decides the number of bobbin changes
  • the number of faults in the yarn and the clearer settings, this decides the clearer cuts
  • count
  • the number of doffs. It depends upon the doff weight. Higher the doff weight, lower the number of doffs
  • the time taken for each doff either by the doffer or by an operator
  • Down time due to red light.  It depends upon, number of red lights, number of repeaters  setting for red lights, clearer settings like off count channel, cluster setting which will result in red lights and others
  • bobbin rejections, it depends on weak yarn, wrong gaiting, double gaiting, bobbin characteritics etc.
WINDING PACKAGE DEFECTS: Following are some of the package defects which will result in complaints
  • Yarn waste in the cones. This is due to loose yarn ends that are wound on to the cone
  • Stitch, drop over, web:  Yarn is visible on the small or on the big side of the cone either across the side , around the tube, or going back in the cone
  • Damaged edges or broken ends on the cone: The yarn is broken on the edges or in the middle of the cone.
  • Ring formation:  The yarn runs in belt formation on to the  package, because it is misguided
  • Without transfer tail: The desired transfer tail is missing or too short
  • Ribbon formation: Pattern or ring formation are made by the drum when rpm are stying the same
  • Displaced yarn layers: yarn layers are disturbed and are sliding towards the small diameter of the cone
  • Misguided yarn : The yarn is not equally guided over the hole package
  • Cauliflower: On the smaller side of the package,  the yarn shows a wrinkle effect
  • Soft and Hard yarn layer:  Some layer of yarn are pushed out on the small side of the cone
  • Soft and Hard cones: Great difference in package density from one winder head to another
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