| abstract |
The polylactic acid resin fiber is composed of 100 parts by weight of L-lactic acid (A) having a purity of L-lactic acid of 99 mol% or more, 3 to 10 parts by weight of a plasticizer (B), and 0.3 to 1.0 part by weight of a lubricant ( The mixture of C) is melt-spun, and the following (a) and (b) (a) shrinkage recovery ratio is 5% or less; (b) the crystallinity measured by the differential scanning calorimeter is 50 to 70% of the conditions shown. |