melting to produce a crimped yarn spinning processing method and melt spinning processing equipment

摘要

The present invention relates to a melt-spinning processing method and melt spinning processing equipment to produce a crimped yarn . Using a spinning apparatus, is formed filament bundle from a thermoplastic polymer, the filament bundle is drawn after cooling, it is compressed to a yarn plug-like body in the stuffing box. The yarn plug-like body is understood to crimped yarn, wound on a bobbin. In order to obtain a high winding contraction fixability as possible of the yarn, after stretching, the amorphous portion in the molecular structure of the yarn material is avoided. This is, according to the invention is achieved by a relaxation treatment after the and before compression stretching, the minimum thread tension above this time 0.05cN / dtex are obtained in the relaxation temperature in the range of 120 ~245 .