Skewness and Spirality After Washing
topic
Skewness testing measures the angular displacement of weft yarns relative to warp direction after laundering as a percentage of fabric width, while spirality measures the rotation of wale lines in knitted fabrics after laundering, both expressed as percentage deviation from original reference line positions.
Role
Quantifies the twisting and distortion failures that cause laundered garments to appear misaligned or twisted, enabling specification of balanced yarn twist, fabric pre-relaxation, and finishing conditions to prevent spirality and skewness in knitwear and woven shirting.