To make stretch yarns by the false- twist method, the yarn is fed from the supply package to the heater, where twist is set into the filaments, following the heat setting, the yarns are untwisted and taken up on packages.

• 利用假捻法生产弹性纱线时,纱线从卷装被输送到加热器内,在这里长丝被定型,之后纱线被解捻,并卷绕到卷装上。