Patent ID: 7713619

Claim:
A multifilament for doll hair, the multifilament having been processed through a twisting step, a thermal fixing step, an untwisting step, and a thermal provisional fixing step, wherein a number of twist in the untwisting step is larger than a number of twist in the twisting step, so that the multifilament exhibits a stretching ratio of 2.0% to 13.0%, the stretching ratio being determined by: fixing an upper end of the multifilament with a clamp; hanging the multifilament under an initial tension of 1.7 mg/dtex; marking the multifilament at a position of 20 cm from an upper clamp (a); applying a load of 90 mg/dtex to the multifilament; 30 seconds later, measuring a length of the multifilament (b); and calculating the stretching ratio by a following formula: Stretching ratio(%)={( b−a )/ a}× 100.