Bicomponents:synthesis, production,application, market and technology information

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Bico or Bicomponent is formed by extruding one type of polymer on the inside of the strand and another type on the outside
Bi-component Fiber – fiber with two different elements, usually polymers with different melting points.
The objective of producing Bicomponent fibers is to exploit capabilities not existing in either polymer alone. By this technique, it is possible to produce fibers of any cross sectional shape or geometry that can be imagined.
Bicomponent fibers are generally classified by their fiber cross-section structures as side-by-side, sheath-core, islands-in-the-sea and citrus fibers or segmented-pie cross-section types.
Low melt thermoplastic like polyethylene is on the outside and polypropylene or polyester is on the inside. When heated in an oven, the polyethylene melts and bonds the other fibers together
The present production of bicomponent fibers worldwide is said to be only a fraction of the 25 million metric tons of manmade fiber market
The main applications are Nonwoven fabrics for diapers, feminine care and adult incontinence products ; Air-laid nonwoven structures are used as absorbent cores in wet wipes ; Used in spun laced nonwoven products like medical disposable textiles, filtration products ..

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