T/CCTA 30902-2022 Plant dyeing for cotton and recycled cellulose fiber blended yarns
T/CCTA 30902-2022 Plant dyeing for cotton and recycled cellulose fiber blended yarns
Basic Information
Scope
Main technical content: This document specifies the terms and definitions, product classification, marking, requirements, test methods, inspection rules, and marking, packaging for plant dye-dyed cotton and regenerated cellulose fiber color-spun yarns. The quality requirements for plant dye-dyed cotton and regenerated cellulose fiber color-spun yarns are divided into characteristic indicators and technical requirements. Technical requirements include line density deviation rate, line density variation coefficient, single yarn breaking strength, single yarn breaking strength variation coefficient, evenness of yarn, cotton knots per kilometer, obvious color knots, yarn defects per 100,000 meters, hairiness index H value or 2 mm hairiness number, color fastness, fiber content deviation, color difference, and safety performance, a total of thirteen indicators.