Preparation method of bi-component elastic composite fiber

Abstract

The invention relates to a preparation method of a bi-component elastic composite fiber, two different high polymer melts are subjected to composite spinning to prepare the bi-component elastic composite fiber, and a spinneret plate used for composite spinning is provided with a plurality of unit spinneret combination holes; each unit spinneret combination hole is composed of round spinneret holes I-IV (I is opposite to II, and III is opposite to IV), the circle centers of the round spinneret holes I-IV are located at the midpoints of the four edges of the square respectively, the diameters of the round spinneret holes I-IV are the same and are 0.13-0.14 mm, and the distance between the round spinneret holes I and II is 0.08-0.10 mm; one of the two different high polymer melts is extruded from the circular spinneret orifices I and II, and the other one of the two different high polymer melts is extruded from the circular spinneret orifices III and IV; the distance between every two adjacent unit spinneret combination holes is larger than 5 mm. According to the method, the spinnability is good, and the plate cleaning period of the spinning spinneret plate in the machining process is long.

Description

technical field [0001] The invention belongs to the technical field of the production of special special-shaped polyester composite fibers, and relates to a preparation method of a bicomponent elastic composite fiber. Background technique [0002] In recent years, from the trend that the number of functional fabrics used by brands such as Nike, Adidas and Reebok has gradually increased, it has a series of healthy, functional, high-tech smart fabrics such as antibacterial, deodorant, fireproof, warm and sweat-wicking, moisture-permeable and waterproof. Textiles will become the mainstream of the future market. Moisture-wicking fibers are widely used and have broad market prospects. International research started earlier. The Coolmax first developed by DuPont in the United States and the Triactor product developed by Toyo Company in Japan were purchased by the military to make military uniforms. The back-end products of the "cross"-shaped special-shaped fiber have very good m...

AI Technical Summary

Problems solved by technology

At present, the production of composite fibers is basically the production of conventional round-hole composite yarns, and there are few special-shaped composite fiber products, whose potential crimp performance, crimp stability and elastic recovery are relatively poor.

Patent CN104726947A discloses a two-component cross-shaped composite fiber, which has relatively good crimp performance, crimp stability and elastic recovery, but its spinneret hole is an ordinary "ten"-shaped spinneret hole spinneret. The cleaning cycle is short, often about ten hours after the spinneret is cleaned, the surface of the spinneret will be dirty, which will easily cause spinning breakage and floating yarn, thus increasing the production cost

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