OE Yarn Structure and Characteristics

OE yarn structure: two-component structure with (1) core fibres (30-40% of fibres, relatively parallel, lower twist, providing tensile strength) and (2) wrapper fibres (60-70%, highly twisted, helically wound around core, providing cohesion and surface appearance). Distinctive features: flat ribbon-like cross-section (vs. ring yarn circular), lower packing density (10-15% less dense than ring—more open structure), wrapper fibre predominance creating characteristically harsher handle, higher twist angle (wrapper fibres approach 70-80° helix angle vs. ring 25-40°), and wrapper migration (wrapper fibres periodically becoming core and vice versa at intervals creating weak points).