Fancy yarn and spinning method thereof

Abstract

The invention discloses a fancy yarn and a spinning method thereof. The fancy yarn comprises a base yarn and first thick sections, the longitudinal linear density of the fancy yarn regularly varies within a rotor girth segment, at least two first thick sections evenly occur, a second thick section which is equivalent with each first thick section in length and smaller than each first thick section in diameter is arranged between every two first thick sections, the yarn of the first thick sections and the yarn of the second thick sections are fluffier and lower in the degree of twist than the base yarn, the fancy yarn adopts a cellfibre flow in a path from entering a rotor to being merged and condensed, and spinning is performed within a certain length by using a method of continuously exerting external force, and the method of exerting external force refers to that negative pressure or positive pressure airflow is externally exerted at the slotting part of the rotor. The fancy yarn provided by the invention has a unique style, enriches the variety of rotor spinning products, and has relatively strong practicability and relatively high economic value.

Description

technical field [0001] The invention belongs to the technical field of spinning, and relates to a fancy yarn and a spinning method thereof, in particular to a method of continuously applying a single fiber flow on a path from entering a rotor to before merging and agglomerating over a certain length. Rotor spun fancy yarn whose linear density changes longitudinally by the method of external force. Background technique [0002] Rotor spinning belongs to the field of open-end spinning. It has the characteristics of high spinning speed, large package capacity, good spinnability and the ability to spin high-quality and low-quality raw materials. It has become the most mature technology and the most widely used spinning technology among new spinning technologies. Wide and economical spinning form. [0003] Initially, only low-cost raw materials were used in rotor spinning, such as waste from textile mills or reusable textile materials. In the mid-1970s, rotor spinning was only ...

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Problems solved by technology

[0005] Using the method of changing the speed of the feeding roller or the speed of the yarn delivery roller, the shortest fancy yarn can be spun with a slub of the length of the circumference of the rotor, and the length and diameter of the slub are greatly affected by the diameter of the rotor and the performance of the motor; The method of setting damping points in the rotor is to set one or several damping points in the fiber condensation groove in the rotor to spin fancy yarns. Although this method can be used to spin fancy yarns with short thick details, However, dust is easy to accumulate on both sides of the fiber condensation groove, especially the damping point, which makes the coarse and fine details of the fancy yarn unstable; the method of engraving the groove in the rotor is to manually process grooves on the fiber sliding surface to make it have a certain depth and length, but this method will also cause dust accumulation in the groove, which will affect the stability of the fancy yarn

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