This standard specifies the test method for thermal crimp elongation of bulked filament (BCF). This standard applies to polyamide (nylon) and polypropylene (polypropylene) bulked filament (BCF). Other bulked filament yarns (BCF) can be used as reference.
FZ/T 50030-2015 Referenced Document
GB/T 14343 Testing method for linear density of man-made filament yarns