一 前言 涤纶长丝的工艺技术路线主要有低速纺,中速纺和高速纺三种。本文主要讨论了这三种工艺路线所纺制的卷绕丝在存放过程中纤维结构、力学性质、后加工性能的变化及发生这些变化的原因,从而科学地推断出它们在实际生产放置过程中达到结构和性能基本不变所需要的“平衡时间”,为生产上合理选择存放时间提供依据。这对生产管理、 A foreword The process of polyester filament yarn technology mainly low-speed spinning line, medium-speed spinning and high-speed spinning three. In this paper, the changes of fiber structure, mechanical properties, post-processing properties and the reasons for these changes in the winding process of the three kinds of winding routes were mainly discussed, and thus they were scientifically inferred that during their actual production placement To achieve the basic structure and performance changes required for the “balance of time” for the production of a reasonable choice of storage time provided the basis. This production management,