Special yarn
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This presentation discusses different types of special or fancy yarns. It is presented by Md. Abdullah Al Mamun from the Department of Textile Engineering at Daffodil International University. The document introduces special yarns which have deliberate color or structural discontinuities incorporated for aesthetic effects. Several types of special yarns are described, including marl, spiral, chenille, knop, slub, loop, and gimp yarns. These yarns find use in decorative textiles like curtains, carpets, and clothing due to their aesthetic appeal. Examples of the structures of marl, spiral, knop, slub, loop, and gimp yarns are provided.
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The presentation provided an introduction to fabric structure and design, focusing on plain weave as the most basic weave structure. Key aspects of plain weave were defined, including the interlacing of warp and weft threads at right angles. Variations of plain weave such as rib weave and matt weave were also described, highlighting differences in their structural properties and production methods.
Yarn Geometry
This presentation discusses yarn geometry and various types of yarns. It defines textiles and yarn, and classifies yarns into continuous filament, staple, core spun, novelty, stretch, and high bulk yarns. It describes the properties, structures, and manufacturing processes of these different yarns. The presentation also covers yarn designation, ideal yarn properties, fiber packing in yarns, optimum twist factor, twist contraction, and the basic geometry of twisted yarns.
SPINNING Avengers
This document summarizes the yarn manufacturing process. It discusses the key textile raw materials used which include cellulosic, protein, synthetic, mineral and organic fibers. The properties required for spinning fibers into yarns are described. The manufacturing stages are then outlined which include blowroom, carding, drawing, roving, ring frame, and combing. Each stage is defined along with its functions such as opening, cleaning, blending, drafting and twisting fibers to produce yarns of different sizes, textures and characteristics for various fabric end uses.
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Special yarn
- 2. Topic of my presentation “Special Yarns”
- 3. Presented by: Md. Abdullah Al Mamun ID 151-23-4173 Department of TE E-mail: abdullah23-4173@diu.edu.bd Daffodil International University
- 4. Introduction Special yarn are those in which some deliberate decorative discontinuity or interruption is introduced, of either color or form, or of both color and form. This discontinuity is incorporated with the intention of producing an enhanced aesthetic effect. The demand for yarns with structural or optical effects is due to the special aesthetic and high decorative appeal to the woven, knitted materials, and other textiles as well. Textile materials that are produced using yarns with effects find applications in normal and high fashion clothing.
- 5. Different types of Special / fancy yarns Gimp Yarn Spiral or Corkscrew yarn Marl Yarn Covered Yarns Composite Yarns Chenille Yarn Chainette Yarn Ribbon Yarns Tape Yarn Fasciated Yarn Slub Yarn Knop Yarn
- 6. Use Such yarns are also used for decorative textiles like, Curtains Carpets Ladies and children Outerwear Decor materials and textile fabrics in the corporate sector, as for example in the trim of a car or textile furnishing of a hotel lobby are becoming more and more important.
- 7. Marl Yarn This is the simplest among the special yarns and is made by twisting two different colored but same count of yarns by doubling process. It is different from normal double yarn in the sense of texture.
- 8. Spiral or Corkscrew yarn A spiral or corkscrew yarn is a plied yarn that displays a characteristic smooth spiraling of one component around the other. In figure shows the basic structure, which is straightforward, except in the differing lengths of the two yarns involved, very similar to the structure of a marl yarn.
- 9. Knop Yarn A knop yarn contains prominent bunches of one or more of its component threads, at regular or irregular intervals along the length. it is normally produced by using an apparatus that has two pairs of roller. The insertion of twist collects the knopping threads formed into a bunch or knop.
- 10. Slub Yarn Slubs are thick places in the yarn. Slub yarn is one in which slubs have been deliberately created to produce discontinuity of effect. the slub may be three or four times thickness of the base yarn, and the increase in thickness may be achieved within a short length of yarn. slub yarn are normally use for decorative purpose.
- 11. Loop Yarn A loop yarn consist of a core with an effect yarn wrapped around it and overfed so as to produce almost circular projection on its surface. Figure shows the structure of a loop yarn.
- 12. Gimp Yarn A gimp yarn is a compound yarn consisting of a twisted core with an yarn warped around it so as to produce wavy projections on its surface. The structure is shown in figure-
- 13. Thank you