This standard specifies the classification and labeling of polytrimethylene terephthalate/polyethylene terephthalate (PTT/PET) composite fiber (hereinafter referred to as "PTT/PET composite fiber") and cotton blended natural yarn products , requirements, test methods, inspection rules and markings, packaging. This standard is applicable to PTT/PET composite fiber and cotton blended natural yarns with a cotton blending ratio of more than 50% in the ring spinning mechanism. It is not applicable to special-purpose PTT/PET composite fiber and cotton blended natural yarns.
FZ/T 12053-2016 Referenced Document
FZ/T 01050 Textiles.Classifying and testing method of yarn faults.Capacitance
FZ/T 10007 Cotton and chemical fiber pure and blended natural color yarn inspection rules*， 2019-04-01 Update
FZ/T 10008 Cotton and chemical fiber pure and blended yarn marking and packaging*， 2018-10-22 Update
GB/T 2910.1 Textiles.Quantitative chemical analysis.Part 1:General principles of testing
GB/T 2910.11 Textiles.Quantitative chemical analysis.Part 11:Mixtures of cellulose and polyester fibres(method using sulfuric acid)
GB/T 3292.1 Textiles.Unevenness of textile strands.Part 1: Capacitance method
GB/T 3916 Textiles.Yarns from packages.Determination of single-end breaking force and elongation at break using constant rate of extension (CRE) tester