Preparation technology of ultralow contraction terylene industry long filament

Abstract

This invention relates to the process of a kind of ultra-low contraction polyester fiber industry filament, which introduces the spinning and stretch one-stage process, including: solid phase increases sticks, melting spinning, high temperature stretches, heat setting, coiling formation. This invention adopts the innovative 5 pairs of hot rollers stretch heat setting technique, in comparison with the tradition 4 pairs, which adopts the 2-step heat stretch and 2-step heat setting. The new level heat setting processing method can reduce the textile fiber stretch speed effectively, lengthen the textile fiber heat setting time, and enables the textile fiber possessing evenly stable orientation structure, which guarantees product physics performance, optimizes the spinning condition. This ultra-low contraction polyester fiber industry filament preparation method provided with polyester fiber industry having high density, big module, small elongate, good heat-resisting performance, resisting impingement, and bearing the fagged performance.

Description

technical field

[0001] The invention discloses a preparation process of ultra-low shrinkage polyester industrial filament, which belongs to the technical field of textile technology. Background technique

[0002] Since the advent of polyester in the 1950s, great progress has been made in the development of industrial applications. Due to its low heat shrinkage, polyester industrial yarn is widely used in the field of narrow-width fabrics such as filter cloth, sunshade cloth, tarpaulin, etc. The dry heat shrinkage of traditional low-shrinkage polyester industrial yarn is about 2 %(177℃, 1min, 0.05g / D), the polyester industrial yarn with this level of dry heat shrinkage will have a large shrinkage rate and uneven shrinkage after being woven into cloth and heat-treated by coating, which may easily cause uneven cloth surface. Flat, so it can only be used for the weaving of narrow fabrics. In recent years, due to the rapid development of membrane structura...