Do you know these facts about yarns? - PowerPoint PPT Presentation

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Do you know these facts about yarns?

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Know the facts about yarns. Download the ReshaMandi app for weavers to access yarns, fabrics and sarees at fair prices. – PowerPoint PPT presentation

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Title: Do you know these facts about yarns?


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Do you know these facts about yarns?
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  • It is a well-known fact that, when every product
    we create is great, a business will flourish. For
    the stakeholders of the natural fibre supply
    chain, access to good quality raw materials plays
    a vital role.
  • Good quality raw materials will help reelers,
    weavers craft the best yarns and exquisite
    fabrics. To bring out the best natural fibres, a
    weaver must differentiate between high-quality
    and low-quality yarn.

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A simple guide to help you understand the A to Z
of yarns
  • A lengthy, continuous strand of entangled fibres
    is called yarn.. Textile yarn is manufactured
    with natural fibers from substances such as wool
    from sheep, silk from silkworms, or cotton and
    linen from plants.
  • It can also be created with synthetic, or
    man-made, fibres derived from a variety of
    substances like nylon, acrylic, and polyester.
    Yarn is created by spinning. It can be spun
    manually or by a machine. Weaving yarn has a
    tight twist, a smooth exterior, and significant
    longitudinal strength.

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Types of yarns
  • There are 3 types of basic yarns, which are
    further classified into different categories
    based on their characteristics and type of
    spinning. 

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Staple fibre yarn or Spun yarn
  • Staple fibre yarns are made by twisting together
    short fibres. Spun yarn is classified into
    various categories based on the direction of
    twist.
  • S twist yarn Yarns are twisted in clockwise
    direction, the inclination angle of fibres makes
    the shape S
  • Z twist yarn Yarns are twisted in
    anti-clockwise direction, the inclination angle
    of fibres makes the shape Z
  • Zero twist or twist less yarn Untwisted staple
    fibres are wrapped with hot water soluble
    filaments.  During processing, these filaments
    are dissolved in hot water after weaving

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  • Spun yarn is classified into various categories
    based on the degree of twist.
  • Low twist yarn Low twist yarn has a soft feel,
    poor lustre and less clarity in the structure.
    Fabrics made of this yarn have poor pilling
    properties
  • Normal twist yarn As per the spinning
    specifications, this yarn has a normal twist
  • High twist yarn With a higher degree of twist,
    this yarn enhances the fabric texture. It has
    better pilling properties with a good lustre

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  • Based on the spinning technology used, the spun
    yarn can be classified into two groups
  • Ring frame yarn Spindle-based method of spinning
    is used to create ring frame yarn
  • Open-end yarn  A rotor spinning machine is used
    to create open-end yarn. It is considered cheaper
    than ring frame yarn
  • Ply yarn  Ply yarns are made by twisting
    together 2 or more single yarns. There are 2
    types of Ply yarns Single-ply yarn and Multi-ply
    yarn
  • Filament yarn Filament yarns  are made by
    winding mostly one or more short natural fibres 

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Yarns in woven fabric manufacturing
  • Warp Yarn Warp yarn is positioned in the
    longitudinal direction of a woven fabric and is
    used to make a weaving beam.
  • Weft yarn Weft yarn is used for cross
    interlacement through warp beams.

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How to spot good yarns?
  • Magnificent fabrics can be weaved only with good
    quality yarn. Good quality yarn includes yarn
    that have
  • No splits
  • No breaks in the plies
  • Devoid of colour bleed

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How to determine the quality of yarn?
  • The Twist Test
  • This test is used to determine the spiral
    disposition of the yarn . Twisting improves the
    strength of yarn, however  too many twists places
    the fibres at the right angle to the axis of
    yarn, resulting in the decrease of yarn strength.
    Different twists are given to yarn, based on its
    use in the fabric. Standard warp twist is used to
    incorporate maximum twists for warp yarns.

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  • Parameters for yarn quality
  • Several parameters are used to ascertain the
    quality of different yarn types. 
  • Denier, Ne, Lea
  • Denier is used to determine the  thickness of
    fibres or filaments used in the silk yarn.
    Greater the denier value, heavier, thicker and
    cheaper the yarn. 

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  • Lesser the denier value, the lighter, thinner and
    more expensive the yarn. For cotton yarn it is
    called count and unit is Ne, it is used to
    express the size of the cotton yarn.
  • It refers to the  number of times the length of
    one pound of yarn can be divided by 840. For
    linen the thickness is measured as Lea

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  • Yarn elongation
  • The elongation of yarn is vital for weaving.
    Higher yarn elongation permits better ability to
    bear the tension and jerk during weaving
    processes.
  • Degree of Hairiness
  • The degree of hairiness refers to the number of
    fibres protruding from the base of the yarn.
    Lesser value of hairiness, indicates yarns have
    lower chances of pilling. 

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Access to good yarns and more with ReshaMandi
  • ReshaMandi, with a vision to make India the
    powerhouse of natural fibre, is working with
    farmers, reelers, weavers, and retailers of the
    natural fibre ecosystem.
  • It is empowering them by providing access to
    high-quality raw materials, inputs and creating
    means, and methods to enhance their incomes and
    transform them into entrepreneurs. 

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  • ReshaMandi has set up procurement centres across
    the country, ensuring there is never a dearth of
    scientifically graded yarns for the weavers. It
    offers them high-quality yarns at fair prices, as
    weavers can sell their products to ReshaMandi at
    the best prices, it also helps them to clear
    their inventory faster. 
  • To access yarns at fair prices and to get good
    prices for your fabrics and sarees, download the
    ReshaMandi app for weavers.

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  • Phone - 91 7338694594
  • Mail - support_at_reshamandi.com
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