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Bicomponent fibers

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Bicomponent fibers

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  1. BICOMPONENT FIBERS

  2. Prepared By : Prepared By : Mazadul Hasan sheshir ID: 2010000400008 13thBatch (session 2009-2013) Department : Wet Processing Technology Email: mazadulhasan@yahoo.com Blog : www. Textilelab.blogspot.com (visit) Southeast University Department Of Textile Engineering I/A 251,252 Tejgaon Dhaka Bangladesh

  3. Total Textile Process at a Glance

  4. BICOMPONENT FIBERS The first commercial bicomponent application in the mid 1960s Bicomponent fibers can be defined as "extruding two polymers from the same spinneret, that is, both polymers contained within the same filament.” The term "conjugate fibers" is often used, particularly in Asia, as synonymous with bicomponent fibers. Bicomponent fibers are commonly classified by their

  5. Definition: Bicomponent fiber is comprised of two polymers of different chemical and / or physical properties extruded from the same spinneret with both polymers within the same filament.

  6. fiber cross-section structures as: 1.Side-by-Side, 2.Sheath and Core 3.Islands-in-the-Sea and 4.Segmented-pie cross-section types 5.Tipped 6.Mixed Fiber 7.Micro Fiber

  7. Advantages of Bicomponent Thermal Binder Fibers •Uniform distribution of adhesive •Fiber remains a part of structure and adds integrity •Customized sheath materials to bond various materials •Wide range of bonding temperatures •Cleaner, environmentally friendly (no effluent) •Recyclable •Lamination / molding / densification of composites.

  8. Common Polymer Combinations in Bicomponent Thermal Binder Fibers 1. Polyester Core (250C melt point) with Copolyester Sheath (melt points of 110C to 220C) 2. Polyester Core (250C melt point) with Polyethylene Sheath (130C melt point) 3. Polypropylene Core (175C melt point) with Polyethylene Sheath (130C melt point)

  9. Bicomponent Fiber Capabilities Bicomponents can provide: 1. Thermal bonding 2. Self bulking 3. Very fine fibers 4. Unique cross sections 5. The functionality of special polymers or additives at reduced cost

  10. POLYMERS The polymers given below can be used as either of the components in the cross sections PET (polyester) PEN polyester Nylon 6,6 PCT polyester Polypropylene PBT polyester Nylon 6 co-polyamides Polylactic acid polystyrene Acetal polyurethane Soluble co polyester HDPE, LLDPE

  11. PRODUCERS Worldwide, Japan and Korea led in bicomponent output with a total of 200 million pounds annually. The production of the U.S. is currently around 60 million pounds with Hoechst Celanese holding the lead. Other U.S. players in the Bicomponent sector include Foss manufacturing, International Polymers Inc. and Fiber Visions. The present production of bicomponent fibers worldwide is only a fraction of the 25 million metric tons of manmade fiber market, but the producers are confident of significant growth in the next 10 years or so .

  12. These fibers contain two components lying side-by- side. Generally, these fibers consist of two components divided along the length into two or more distinct regions. Sheath-core Bicomponent fibers are those fibers where one of the componentsis fully surrounded by the second component. These fibers are widely used as bonding fibers in Nonwoven industry.

  13. Bicomponent Fibers Variants Islands-in-the-Sea Sixteen Segment Pie Islands-in-the-Sea

  14. MATRIX-FIBRIL BICOMPONENT FIBERS These are also called islands-in-the-sea fibers. Technically these are complicated structures to make and use. In cross section, they are areas of one polymer in a matrix of a second polymer. These types of bicomponent structure facilitate the generation of micro denier fibers. The ‘islands' are usually a melt spinnable polymer such as nylon, polyester or polypropylene. Polystyrene water-soluble polyesters and plasticized or saponified polyvinyl alcohol can form the sea or matrix. The finer deniers that can be obtained are normally below 0.1 denier

  15. Nanofibers from splitting bicomponent fibers

  16. SEGMENTED PIE STRUCTURE

  17. Figure PET PET Nylon Nylon Standard pie wedge fiber

  18. Figure 6 Figure 7 PET Nylon

  19. http://www.textilelab.blogspot.com (Visit ) My Facebook Textile related Pages 1. Yarn Manufacturing Technology Link : http://www.facebook.com/pages/Yarn-Manufacturing- Technology/485014954866808 2. Fabric Manufacturing Technology Link : http://www.facebook.com/pages/Fabric-Manufacturing- Technology/459520217425605 3. Garments Manufacturing Technology Link : http://www.facebook.com/pages/Garments-Manufacturing- Technology/472364799463126 3. Wet processing Technology Link : http://www.facebook.com/pages/Wet-Processing-Technology-Dyeing- /468645219825404 4. Fashion-Design-and-Technology Link : http://www.facebook.com/pages/Fashion-Design-and- Technology/587655294583875?ref=ts&fref=ts

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