Bicomponent fibers

BICOMPONENT FIBERS Prepared By : Mazadul Hasan sheshir ID: 2010000400008 13 th Batch (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 Prepared By :  Total Texle Process at a Glance   !! "#$%!&!"  BICOMPONENT FIBERS   '(  " Denion: 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 fiber cross-section structures as: [...]... years or so These fibers contain two components lying side-byside 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 Matrix-fibril Bicomponent Fibers These are... of Nozzle part of island-in-the-sea type fiber Photo of the island observed under polarizing microscope Nano fibers from splitting bicomponent fibers: Figure Nanofibers from Bicomponent fibers Sheath/Core Fibers, Round Cross-Section This is a 10% sheath, 90% core of Co-PET/PET In bicomponent fibers used for bonding, it is generally desirable to minimize sheath ratio However, due to equipment and process... deniers that can be obtained are normally below 0.1 denier Bicomponent Fibers Variants Islands-in-the-Sea Islands-in-the-Sea Sixteen Segment Pie Nanofibers from splitting bicomponent fibers Segmented pie structure Figure PET Nylon Standard pie wedge fiber Figure Figure PET Nylon Spin head of single component spinning 　 　　　　 Configuration of part of bicomponent spinning equipment Different Types of Nozzle... 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... solid filament in the area not exposed to the hot water This technique as been used to produce fibers on 6 mm hole centers with over 1100 island fibers in each filament When drawn, final total filament denier of 1 dpf was produced, resulting in island fibers of approximately 500 nanometer diameter Basically, these fibers are spun from the mixture of two polymers in the required proportion; where one polymer... Nonwoven industry 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.. .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 POLYMERS The polymers given below can be used as either... uniformity can be achieved in commercial applications with 36 or more segments Sixteen Segment Hollow Pie This cross-section was produced with a spinneret designed to produce hollow fibers In certain applications, these fibers can be made to split in-line with fiber extrusion It is also noteworthy to point out that these filaments as well as the filaments shown in Photographs 4 and 5 were all produced... extended its capabilities to produce INS fibers to higher island counts This photomicrograph shows 600 polypropylene islands in a sea of PVA polymer The polymer ratio is 30%/70%.After being spun the fiber is drawn and the PVA polymer is dissolved away with hot water The fiber shown was produced in this manner and then dipped in a cup of boiling water leaving the 600 island fibers in the area exposed to the... sheath ratios in the complex non-round fiber cross-sections Side-by-Side, Trilobal Cross-Section This is an example of self-bulking fibers commercialized in products where complex jet texturing has historically been required Sixteen Segment Pie This is an example of splittable fibers for microdenier applications In this photomicrograph please note the high degree of perfection of the cross-sections; i.e., . 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. Matrix-fibril Bicomponent Fibers ???"4">! . " PRODUCERS 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. point)21(130C melt point) Common Polymer Combinaons in Bicomponent Thermal Binder Fibers Bicomponents can provide: "  3" 1 4 5"