Fibre to Yarn: Filament Yarn Spinning - ScienceDirect
2015-1-1 · Core-effect yarns (or fancy yarns) are produced with two main components: a core yarn and an effect yarn. Both may consist of one or more POYs. The overfeed used for the core yarn(s) is always lower than that for the effect yarn(s): the former is normally between 5% and 15% whereas the latter can be up to 400%, depending on the end-use.
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