Abstract: In order to solve the low strength and weak abrasion-resistant of bamboo/polyester yarn, the paper formulated different sizing formulas and sizing processes, and tested and analyzed the yarn via sizing quality indicators such as breaking strength and abrasion resistance increase rate. It was finally determined the sizing process suitable for bamboo/polyester yarn to improve its sizing performance.

Key words: bamboo/polyester yarn; size formula; main squeezing pressure; sizing quality