SPEY - process layout for the stable ring spinning of polylactic acid (PLA) staple fiber yams

摘要

This article presents the current state of the project SPEY which aims to establish polylactic acid (PLA) staple fiber yarns in home textiles or in technical applications using a methodological approach and process analysis. The goal of the performed process analysis is the avoidance of degradation phenomena during the ring spinning process. At the current state of the project, ring spinning yarn of 100% PLA was successfully produced. A production speed of v_(pr) = 23 m/min combined with a twist factor of α_m = 100 T/m lead to a stable process without yarn breakage. The resulting yarn count is T_t= 25 tex.This article provides an overview of the results from the ring spinning trials with experimental PLA filaments and presents optimized production parameters for the stable production of 100% PLA ring spinning yarn.