What difference between dope dyed yarns and package dyed yarns?

Dope dyed yarns are colored during the fiber production process, with color pigments added to the polymer before it is extruded into filaments, resulting in uniform color throughout the yarn. In contrast, package dyed yarns are dyed after the yarn has been spun, typically in large spools or packages, allowing for more variability in color and pattern but often resulting in less colorfastness. Dope dyeing is generally more eco-friendly and efficient, while package dyeing offers greater flexibility in color options.