For decades bicomponent fibers, which consist of two polymers having different chemical or physical properties, have been known to the fiber spinning industry and research. Examples of the most often used bicomponent fibers are sheath-core fibers utilized in thermal bonding processes and segmented pie fibers used in production of microfibers. This book addresses a bicomponent islands-in-the-sea fiber technology and the ways to utilize this technology for production of strong micro- and nanofiber webs. Approaches to overcome the shortcomings of thermal bonding processes...