Table of Content
 

Khadi vis-à-vis textile industry for cotton polyvastra yarn

  • Natural fibres used in khadi industries .
  • Cotton.
  • Jute.
  • Flax.
  • Coir.
  • Silk.
  • Woolen.
  • Khadi fabric production.

Cotton polyvastra yarn production

  • Brief on khadi yarn production.
  • Hand picking of the cotton bolls.
  • Hand picking.
  • Ginning.
  • Opening and cleaning.
  • Carding.
  • Combing and drawing.
  • Spinning.
  • Hand spinning.
  • Hand spinning.
  • Yarn.
  • Quality of a good yarn.
  • Types of yarn faults.
  • Slub.
  • Snarl.
  • Crackers.
  • Hairiness.
  • Thick places.
  • Thin places.
  • Neppy yarn.
  • Count of yarn.
  • Direct system.
  • Indirect system.
  • English yarn count system.
  • Indirect system.
  • Importance of twist in yarn.
  • The direction and amount of twist.
  • Effect of twist on staple yarn properties.
  • Types of yarn twist.
  • Napping twist.
  • Average twist.
  • Voile twist.
  • Crepe twist.

Winding  for cotton polyvastras yarn.

  • Type of yarn used in khadi.
  • Count range of khadi yarn.
  • Characteristics of khadi yarn.
  • Hank winding (reeling)
  •  Warppreparation.
  • Warp making.
  • Definition.
  • Objective of warping.
  • Construction of warping machine.
  • Important requirement of warping process.
  • Ball warping.
  • Mill warping.
  • Sectional warping.
  • Beam warping.
  • Winding of yarn on bobbin.
  • Winding yarn in the double flanged bobbin.

Sectional warping process for cotton polyvastra yarn

  • Warping – using sectional warping machine.
  • Sectional warping.
  • Sizing.
  • Drawing in.
  • Denting.
  • Gaiting up.
  • Warp beam preparation.

Piran winding process for cotton polyvastra yarn

  • Pirn winding process.
  • Creel.
  • Pirn holders.
  • Broken thread stop motion.
  • Tension devices.
  • Traverse motion and layer locking device.
  • Bunch building machanisam.
  • Diameter controller.
  • Fill pirn stop motion.
  • Driving arrangement.
  • Process of weaving plain weave for cotton polyvastra yarn
  • Loom.
  • Sequence of weaving preparatory process.
  • Sizing.
  • Yarn sizing and sizing process.
  • Hank sizing process.
  • Size solution preparation.
  • Yarn sizing.
  • Street sizing process.
  • Materials used in size solution.
  • Types of adhesive.
  • Natural adhesives.
  • Additives
  • Lubricants or softeners
  • Tallow.
  • Soap.
  • Japan wax.
  • Weft preparation weft winding:
  • Warping.
  • Sectional warping.
  • Sizing.
  • Drawing in.
  • Denting.
  • Gaiting up.
  • Motions of weaving.
  • The primary motions of weaving are the following.
  • The secondary motions are the following.
  • Beating – up.
  • Let off motion.
  • Working of different types of primary, secondary and auxiliary.
  • Loom timings.
  • Elementary weaves and weaving the same with different types of  yarns for various end uses.
  • Elementary weaves.
  • Plain weave.
  • Characteristics of plain weave.
  • Fabrics with plain weave.
  • Twill weave.
  • Characteristics of satin  weave.
  • Fabrics with satin weave.
  • Development of designs on point paper.
  • Method of representing the design in the point paper.
  • Point paper – or design paper.
  • Designation of a point paper.
  • Similarly.
  • Repeat.
  • Design.
  • Draft.
  • Methods of indicating the draft.
  • Importance of 5 wheel take – up motion.
  • Developing weave and its repeat on the point paper.
  • System of drafting.
  • Straight draft.
  • Pointed draft.
  • Basic weaves.
  • Plain weave
  • Characteristics of plain weave.
  • Modification of plain weave
  • Rib weave.
  • Matt or hospsack or dice or basket weaves.
  • Ornamentation 

Counting ends and picks for cotton polyvastra  Yarn

  • Counting ends and picks in the fabric
  • Mending defects in the fabric

Defects Lin Khadi Cloth for Cotton Polyvastra Yarn

  • Missing ends
  • Float
  • Weft crack or less pick
  • Crammed pick (patti)
  • Shuttle smash
  • Temple marks
  • Stains
  • Lashing
  • Hole in cloth
  • Care to be take while weaving

Apply for Certification

https://www.vskills.in/certification/Vskills-Certified-Frame-Loom-Weaver