This standard specifies the test method for the differential shrinkage of polyester pre-oriented yarn/drawn yarn blended yarn. This standard applies to mixed filament yarns formed by merging polyester pre-oriented yarns/drawn yarns and other processes.
FZ/T 50023-2014 Referenced Document
GB/T 3291.1 Textiles--Terms of textile material properties and test--Part 1: Fibre and yarn
GB/T 3291.3 Textiles--Terms of textile material properties and test--Part 3: General