Importance

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Abstract

Multicomponent fibers are provided that include a plurality of coextruded polymeric components arranged in discrete structured domains. The polymer domains have one or more identifying characteristics that can be varied to form a plurality of different identifying patterns. A plurality of islands in the sea fibers can be provided, the plurality of fibers including two or more subsets of fibers, each subset comprising a uniquely identifiable cross sectional pattern of island domains, each pattern being formed from an array comprising a predetermined number of island domains in predetermined locations within the array, wherein each pattern is determined by classifying individual island domains within the array as present or absent from the pattern. The plurality of fibers can be meltspun simultaneously to form a filament yarn or tow.

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First Claim