Special-shaped complex fiber and method of manufacturing the same

Abstract

The invention relates to a special-shaped composite fiber and a manufacture method thereof. A bundle of parallel special-shaped composite fibers is formed by clustering a plurality of double-component, special-shaped, composite and single fibers, wherein the cross section shape of the single and special-shaped fiber is non-round and is any one shape of an oval, a rectangle, a trapezoid, a triangle, a trefoil, a cross, a T shape and an H shape. The manufacture method comprises the following steps: adopting double-component spinning fused mass and utilizing a double-component and composite spinning machine, a parallel composite spinning component and a special-shaped hole spinneret plate to manufacture the parallel special-shaped composite fibers which can be directly prepared into FDY parallel special-shaped composite fibers or can be prepared into POY parallel special-shaped composite fibers and then be prepared into DT or DTY parallel special-shaped composite fibers with crimp property by post-processing technologies, such as traction or elasticizing, and the like. The spinning fused mass has two different characteristics; firstly, the two types of spinning fused mass are together extruded and solidified into fibers by spinneret orifices on the special-shaped hole spinneret plate of a parallel spinning component, and the fibers are drawn, extended and coiled into the parallel special-shaped composite fibers. The invention has the advantages of simple technology, obvious natural fiber simulation effect, convenient popularization and application, and the like, and the waviness and the cross section shape of the fibers are similar to natural fibers.

Description

technical field [0001] The invention relates to a special-shaped composite fiber and a manufacturing method thereof, belonging to the technical field of chemical fibers. Background technique [0002] Side-by-side fiber is the most common composite fiber with a circular cross-section. It spins two fiber-forming polymers with different characteristics through a side-by-side composite spinning assembly. The two-phase structure of side-by-side fibers It is more prominent, and the difference between the two components is fully utilized. Through the difference in thermal properties of the two components, the side-by-side composite fiber can obtain bending characteristics similar to natural fibers in the post-processing process. However, the cross-section of natural fibers presents an irregular shape, and most of the fibers have natural bending characteristics in the longitudinal direction, thus showing excellent performance that chemical fibers cannot match. For example, the cross...

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Problems solved by technology

However, the cross-section of natural fibers presents an irregular shape, and most of the fibers have natural bending characteristics in the longitudinal direction, thus showing excellent performance that chemical fibers cannot match. For example, the cross-section of natural cotton fibers is irregular waist-circle, There is a dry cavity in the center of the cross-section, and it has a natural curl; the cross-section of the wool fiber is approximately circular or oval, and the outer layer is covered with scales like fish scales; the cross-section of a single silkworm cocoon without sericin is irregular Oval, composed of two silk fibroin coated with sericin, the cross section of a single silk fibroin after removing the sericin is irregular triangular; while the cross section of tussah cocoon silk is flat and oblong, and the sericin triangle is also relatively flat, like a horn , there are tiny pores inside; different types of hemp fibers have different cross-sectional shapes, ramie is mostly waist-round, with a middle cavity, and the cell wall has cracks; the cross-section of flax and jute is polygonal, and also has a middle cavity; hibiscus The cross-section of hemp is multi-angled to form a circle with a middle cavity; therefore, the properties of ordinary circular cross-section juxtaposed fibers cannot be compared with natural fibers at all.

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