This standard specifies the terms and definitions, product identification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage requirements for polyester tops. This standard is applicable to polyester tops with a linear density of 1.33 dtex to 6.67 dtex, natural color, circular cross-section, and an average length of less than or equal to 110 mm, which can be directly formed into strips. Other polyester tops can be used as a reference.
FZ/T 53003-2012 Referenced Document
FZ/T 50004 Testing method for shrinkage in hot airof polyester staple fibers