Defects in Core Spun Yarn

defect in Core Spun Yarn

  1. Grin-Through — This defect is an incomplete covering of the core of spandex and is caused by improper positioning of the core with respect to roving.
  2. Short core voids — This defect comes in short sections (25 to 75 mm) of yarns with no stretch because the core broke after the yarn was spun. This may happen due to poor positioning of spandex yarn to roving, over-drafting of core yarn (use recommended drafts), poor mechanical condition of rings, excessive traveller speed, and too heavy traveller
  3. Long core voids — It is long section of yarn with core missing. This defect may arise due to nicked or rough guide surfaces, back drafting of spandex on the tube resulting from insufficient feed-roll contact, over drafting of core yarn and mishandling of spandex supply tubes.

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Source: https://www.inviya.com/blog/defects-in-core-spun-yarn-2/

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Concept of Stretch in Fabric

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The woven and denim garment in general has almost nil stretch making the garment less comfortable and rigid as compared to knit garments, whereas knit garment has a property of de-shaping over a period of use making it less attractive and more prone to deforming as compared to woven garments.

By adding INVIYA® – bare spandex to both woven and knit category of fabrics, woven and denim garments become stretchable and knit garments retains its shape with longer period of use, thus adding value to the entire range of garments.

The entire notion of adding bare spandex to the core yarn of a fabric is to enhance the below properties of the final fabric:

  • Stretchability
  • Drape – gives good drape
  • Good Stretch recovery
  • Wrinkle resistance

 With the more active lifestyle and changing requirement in everyday life it is required more than ever to have a fabric which will not only compliment these conditions but also enhances our daily experience of clothing.

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Source Code: https://www.inviya.com/blog/concept-of-stretch-in-fabric/